Offshore Field Development Projects
Greater Gorgon Greater
Operator:Chevron
Water Depth:1,300 m / 4,290 ft
Region:Australia
Country:Australia
Last Updated:Sep 19, 2012    (view update history)
Project Description
Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters). With estimated reserves of 40 Tcf (1.1 Tcm) of gas, Greater Gorgon is Australia's largest undeveloped gas resource.

Spanning the offshore blocks of WA-18-R, WA-267-P and WA-268-P, Greater Gorgon incorporates various gas discoveries in the area made over many years. In addition to the massive Gorgon gas field (discovered in 1981), Greater Gorgon includes the wildcat wells of Geryon-1 (1999), Orthrus-1 (1999), Urania-1 (2000), Maenad-1 (2000), Jansz-1 (2000), Io (2001), Chandon-1 (2006), and Achilles (2009), ...
Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters). With estimated reserves of 40 Tcf (1.1 Tcm) of gas, Greater Gorgon is Australia's largest undeveloped gas resource.

Spanning the offshore blocks of WA-18-R, WA-267-P and WA-268-P, Greater Gorgon incorporates various gas discoveries in the area made over many years. In addition to the massive Gorgon gas field (discovered in 1981), Greater Gorgon includes the wildcat wells of Geryon-1 (1999), Orthrus-1 (1999), Urania-1 (2000), Maenad-1 (2000), Jansz-1 (2000), Io (2001), Chandon-1 (2006), and Achilles (2009), Satyr (2009), among others.

The Gorgon JV, made up of the Australian subsidiaries of Chevron (the operator with 47% interest), Shell (with 25% interest), ExxonMobil (with 25% interest), Osaka (with 1.25%), Tokyo Gas (with 1%), and Chubu Electric (with .417%), plans to commercialize Greater Gorgon through extensive subsea developments, subsea pipelines and an LNG facility onshore Barrow Island.

Field Development

Upstream development plans for Greater Gorgon include subsea completions for both the Gorgon and Jansz fields. These subsea developments will be tied-back to the onshore Barrow Island LNG plant via pipelines and control umbilicals.

The Gorgon JV awarded both the Front End Engineering and Design (FEED) and the Engineering, Procurement, Construction Management (EPCM) contracts for the upstream development to a Technip/JP Kenny 50/50 JV. Awarded in June 2005, the contracts are worth more than US $75 million and include all subsea development, including the pipelines connecting the fields to the LNG facility.

First deliveries of LNG are expected in late 2014.

Subsea Infrastructure

Each well brought into production will have a subsea tree and surface-controlled subsurface safety valve installed. The trees will then be connected to a cluster, which can accommodate up to eight wells. These clusters will then be connected to production centers on the fields via well jumpers.

Subsea development on the Gorgon field includes two production centers in the first phase. One center will accommodate six subsea wells, and the other will be able to accommodate four subsea wells. A 4-mile (6-kilometer) infield flowline will be constructed to connect the two production centers.

Development on the Jansz field includes one production center that will be able to accommodate up to six subsea wells.

Up to 30 subsea wells will be drilled on the Gorgon and Jansz fields during their production lives. Directionally drilled from various manifolds on the field, the wells will range in water depths of 656 to 4,265 feet (200 to 1,300 meters).

As pressure and production decline from the Gorgon and Jansz fields, other fields in the Greater Gorgon area will be tied into the gas processing facility through subsea systems. The lifetime of the Greater Gorgon project is estimated to span 60 years.

ROVs, offshore work vessels and semisubs will be used for inspection and maintenance on the subsea system.

Pipelines

Individual pipelines will connect the subsea production centers on the Gorgon and Jansz fields to Barrow Island through 30-inch-diameter Corrosion Resistant Alloy multiphase flowlines, with mono-ethylene glycol used for hydrate inhibition and depressurization. Additionally, each pipeline will include an umbilical to transport electric and hydraulic power, signals, and chemicals to the subsea development.

The pipeline connecting Gorgon field to shore will measure 40 miles (65 kilometers), and an additional 7 miles (12 kilometers) of pipeline is being built to connect to the LNG facility. The pipeline connecting the Jansz field to shore will measure 112 miles (180 kilometers) with an additional 7 miles (12 kilometers) of pipeline connecting it to the LNG plant.

The subsea developments and pipeline will be controlled by an electrohydraulic multiplex of primary fiber optic communications from a control system at the LNG plant.

Furthermore, development plans include a domestic gas pipeline to shore.

Governmental Approval

The Gorgon JV submitted a project proposal for the commercialization of Greater Gorgon in 2001. Although Barrow Island has hosted a major oil field operating since 1967, the island is classified as an A-class nature reserve, thus, imposing strict environmental standards on the project.

The Greater Gorgon project proposal was approved by the Australian government with the passing of the Barrow Island Act 2003 legislation through the Western Australian Parliament in November 2003.

Additionally, the Gorgon JV received state and federal environmental approvals in the fall of 2007 for a two train LNG facility on Barrow Island. Since the JV submitted its first application, the project scope grew to a three train LNG facility with a 15-million-tons-per-year capacity. A revised project proposal has been resubmitted to reflect this increase in production, and the JV is confident that it will receive governmental approval.

Once the necessary governmental approvals have been obtained and FEED on the project is completed, the JV will again evaluate the financial commitment of the project before moving forward with construction.
Activities
Status Updates
Another Discovery at Gorgon
Type: Drilling Operations

Sep. 2012 - Chevron continues a successful run in the Greater Gorgon area offshore Western Australia with the announcement of positive results from the Satyr-2 exploration well. The company has confirmed that the well intercepted a net gas column of 128 feet. Satyr-2 was drilled to a depth of 12,454 feet by the Atwood Eagle (DW semisub) in permit WA-374-P. This marks Chevron's fifteenth discovery in Australia since mid-2009. Chevron's Gorgon natural gas project is the largest of almost a dozen terminals planned or under construction along the country's coast.

Chevron Finds Additional Gas in Gorgon Area
Type: New Discovery

Jul. 2012 - Chevron has made a natural gas discovery in the Greater Gorgon area of the Carnarvon Basin, offshore Western Australia. The Pontus-1 exploration well encountered approximately 97 feet (30 meters) of net gas pay. The well is located in the WA-37-L permit area in the Greater Gorgon Area gas fields, approximately 40 miles (65 kilometers) northwest of Barrow Island. The well was drilled in 690 feet (210 meters) of water to a total depth of 16,581 feet (5,054 meters). Chevron Australia is the operator of WA-37-L and holds a 47.3% interest in the permit. Exxon Mobil and Shell Development Australia both hold 25%, Osaka Gas holds 1.25%, Tokyo Gas holds 1% and Chubu Electric Power holds approximately 0.42%.

GE Oil & Gas Receives Gorgon Contract
Type: Contract Award

Jul. 2012 - GE Oil and Gas has been awarded a $600 million service contract to maintain the compressor trains and associated equipment at Chevron's Gorgon LNG project off the northwestern coast of Australia. Under the 22-year agreement, GE will provide Chevron with scheduled maintenance, monitoring and diagnostics of the installed equipment and access to local engineers. GE will also manage inventory and supply initial spare components. GE's first contract performance manager will start working in Perth in October 2012.

Chevron Hits Additional Gas Pay in Satyr-3 Well
Type: Appraisal Operations

Jan. 2012 - Chevron has successfully appraised the Satyr-3 well in the Exmouth Plateau area of the Carnarvon Basin, offshore Western Australia. The Satyr-3 well encountered about 243 feet (74 meters) of net gas pay. Satyr-3 reached a depth of 13,369 feet (4,075 meters) in a water depth of 3,688 feet (1,124 meters) by the Atwood Eagle (DW semisub). The well is located 113 miles (182 kilometers) north of Exmouth in the WA-374-P permit area.

Subsea 7 to Install Subsea Equipment for Gorgon Project
Type: Subsea Equipment

Jul. 2011 - Chevron awarded Subsea 7 a contract for the Gorgon project offshore Western Australia. The work scope includes installation and tie-in of heavy lift structures in the Gorgon and Jansz fields, in a water depth of up to 4,429 feet (1,350 meters). The project scope includes engineering, spools fabrication, transportation, installation and pre-commissioning of 20 subsea structures and foundations; 15 heavy spools; 48 tie-in spools; 39 electrical and 18 hydraulic flying leads; and 5 infield umbilicals and 2 associated distribution units. Project management and engineering will commence immediately with offshore operations scheduled to commence in 2013. The Gorgon natural gas project is operated by Chevron with a 47% interest. Partners in the project include Exxonmobil (25%), Shell (25%), Osaka Gas (1.25%), Tokyo Gas (1%), and Chubu Electric Power (.417%).

Subsea 7 to Install Gorgon Umbilicals
Type: Subsea Equipment

Jul. 2011 - Chevron awarded Subsea 7 a contract, worth nearly US $80 million, for the Gorgon project, offshore Western Australia. The work involves the transportation and installation of subsea umbilicals and structures from Barrow Island - 35 miles (56 kilometers) off the northwest coast of Western Australia, to the Gorgon and Jansz fields. The Gorgon and Jansz umbilicals are 37 miles (59 kilometers) and 84 miles (135 kilometers) in length, respectively and will be installed in water depths of up to 4,429 feet (1,350 meters). Project management and engineering will commence immediately with offshore operations scheduled to commence in early 2013. The Gorgon natural gas project is operated by Chevron with a 47% interest. Partners in the project include Exxonmobil (25%), Shell (25%), Osaka Gas (1.25%), Tokyo Gas (1%), and Chubu Electric Power (.417%).

CB&I Receives Gorgon Project Contract
Type: Development Activity

Jul. 2011 - Chevron Australia awarded CB&I a contract for the mechanical, electrical and instrumentation work on the Gorgon project on Barrow Island, Western Australia. The work scope includes the structural, mechanical, piping, electrical, instrumentation and commissioning support for the construction of three LNG trains (with a total volume of 15 million tones per annum), including associated utilities and a domestic gas processing and compression plant. The contract, worth an estimated US $2.3 billion, is scheduled for completion in 2015. CBI Kentz JV, a joint venture between CB&I and Kentz, will perform the work. The project will develop the Greater Gorgon gas fields, located between 81 miles (130 kilometers) and 124 miles (200 kilometers) off the northwest coast of Western Australia. Chevron is the operator of the project, holding a 47% interest.

Chevron Starts Development Drilling on Gorgon
Type: Development Activity

Jun. 2011 - Chevron announced that the Atwood Osprey semisub has arrived in Australia to commence drilling and completion operations for the company. The rig will complete a queue of development wells as part of the Gorgon project. Gorgon is slated to commence production in 2014. The development is located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia. Chevron is the operator of the project, holding a 47% interest.

Chevron, JX Nippon Sign Gorgon SPA
Type: Status Update

May. 2011 - Chevron Corporation has signed a Sales and Purchase Agreement with JX Nippon Oil and Energy Corporation for a portion of Chevron's offtake of LNG from the Gorgon project. Under the binding agreement, JX Nippon Oil and Energy will receive .3 million tons per annum (MTPA) of LNG for 15 years. Gorgon is under development and slated to commence production in 2014. The development is located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia. Chevron is the operator of the project, holding a 47% interest.

Chevron Underpins Expansion at Gorgon with Latest Gas Find in Orthrus
Type: New Discovery

Feb. 2011 - Chevron has made an additional discovery in the Orthrus-2 well located in the WA-24-R permit area in the Carnarvon Basin offshore Western Australia. The well was drilled to a total depth of 14,098 feet (4,297 meters). Combining both appraisal and exploration objectives, the well encountered nearly 243 feet (74 meters) of net gas pay, of which 102 feet (31 meters) of net gas pay was encountered in a deeper, previously unexplored target interval in the Orthrus field. Chevron is the operator of WA-24-P and holds a 50% interest, while Mobil Australia Resources Company holds 25%, Shell Development and BP Exploration each hold a 12.5% interest.

Clough to Transport, Install Pipeline for Gorgon Project
Type: Contract Award

Dec. 2010 - Chevron and Clough Sea Trucks Joint Venture have entered into an agreement for the domestic gas scope of work on the Gorgon Project. The US $300 million contract includes transporting and installing about 56 miles (90 kilometers) of 20-inch pipeline, both offshore and onshore, from Barrow Island to the Dampier Bunbury Natural Gas Pipeline. Clough will manage the project and oversee installation engineering, including HSE quality and quarantine management, from their headquarters in Perth. Engineering and procurement will begin immediately with site works to start and end in 2012.

McDermott Snags Subsea Fabrication Work for Gorgon Project
Type: Status Update

Oct. 2010 - McDermott was awarded a contract from Vetco Gray Australia Pty Limited for the fabrication of subsea structures and spools for the Gorgon Upstream Project. The scope of work involves the fabrication of various eight-slot, six-slot and four-slot manifolds, including pipeline termination structures, pipeline end terminations, spools, well jumpers, and subsea pig launchers/receivers. Work is scheduled to commence later this year, with completion expected in the last quarter of 2012. The Gorgon project is located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia.

AGR to Excavate Route for Gorgon Pipeline
Type: Contract Award

Jun. 2010 - AGR Drilling Services signed a contract with Van Oord to provide excavation services for the Gorgon Project. The work will utilize the ClayCutter X as the primary excavation tool on the subsea escarpment off the NW Australian coast. By performing the excavation, the Gorgon pipeline can be laid directly to shore. Work should be completed in early 2011. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

J. Ray to Construct Pre-Assembled Racks for Gorgon Project
Type: Contract Award

May. 2010 - The Kellogg Joint Venture-Gorgon on behalf of Chevron Australia, operator of the Gorgon Project, awarded J. Ray McDermott a contract to construct more than 60 pre-assembled racks and units with an estimated combined weight of roughly 27,558 tons (25,000 tonnes). J. Ray will provide services for project management, fabrication engineering, procurement and material management, construction, commissioning assistance, quarantine compliance, load out and sea fastening. The completed pre-assembled structures will be installed as part of the LNG plant currently under construction on Barrow Island. Work is expected to start in the fourth quarter of 2010, with project completion after two years. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf is the Greater Gorgon project.

Aker to Supply Umbilicals for Gorgon Project
Type: Contract Award

Mar. 2010 - Aker Solutions received a contract from Chevron to supply 164 miles (264 kilometers) of steel tube umbilicals and associated equipment for the development of the Gorgon project. The steel tube umbilicals will connect the project's subsea production system to an onshore LNG plant on Barrow Island. The equipment will be delivered in 2Q12. Gorgon, operated by Chevron (50%), is located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia.

BJ Services to Provide Precommissioning Services for Gorgon
Type: Contract Award

Mar. 2010 - BJ Services received a US $80 million contract from Chevron to provide pipeline precommissioning services for the Gorgon project. The engineering and planning phase of the project commenced in January, and the first mobilization is scheduled for 4Q10. Gorgon is located off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf in water depths ranging from 722 to 4,265 feet (220 to 1,300 meters). Chevron serves as the operator of the project.

New Contract Pushes GE Awards for Gorgon Project over $1B
Type: Contract Award

Mar. 2010 - Adding to a previous award that GE Oil and Gas received in October 2009 to provide Gorgon's LNG refrigeration and CO2 re-injection components, GE received an additional contract to supply five 130 MW Frame-9 Gas Turbines in a modularized solution to meet the power needs of Barrow Island's gas treatment and liquefaction facilities. The Frame-9 turbines will be shipped to Australia between July 2012 and mid-2013. The Greater Gorgon project is located in the Carnarvon Basin offshore Western Australia, and Chevron serves as the operator.

Yelloglen-1 Hits Gas Pay in Greater Gorgon Area
Type: New Discovery

Jan. 2010 - A third gas discovery was made in the Greater Gorgon Area in the Carnarvon Basin offshore Western Australia. The ENSCO 7500 semisub drilled the Yellowglen-1 discovery well to a total depth of 9,050 feet (2,760 meters), encountering a gas column of nearly 450 feet (137 meters). Yellowglen is located in the WA-268-P permit area roughly 150 miles (250 kilometers) northwest of Onslow. Chevron serves as the operator, holding a 50% interest; Shell holds a 25% interest; and ExxonMobil holds the remaining 25% interest.

Chevron, Kyushu Sign LNG Agreement for Gorgon, Wheatstone Projects
Type: Operator Update

Jan. 2010 - Chevron and Kyushu Electric Power Company signed an agreement for the delivery of LNG from the Gorgon and Wheatstone projects. Under the agreement, Kyushu expects to receive 0.3 million tons per annum (mtpa) of LNG for 15 years from the Gorgon project and plans to purchase 0.7 mtpa of LNG from the Wheatstone project for 20 years. The agreement also calls for Kyushu Electric to acquire 1.83% of Chevron's equity share in the Wheatstone field and a 1.37% share in the onshore processing facilities. Combined with its equity stake in production, Kyushu will take 0.8 mtpa of LNG from the Wheatstone project. Construction of the Gorgon project started in the second half of 2009 and first gas is planned for 2014. The Wheatstone project started the FEED phase in July 2009, and a final investment decision is expected in 2011.

Neptune Marine Awarded Gorgon Contract
Type: Contract Award

Jan. 2010 - Neptune Marine received a contract to provide diving, survey and vessel support services for Chevron's Gorgon LNG project. Slated to begin this month, Neptune's work scope forms part of the Gorgon initial works program awarded to Marine and Civil Construction. The program includes the installation of piping and the offshore pump station associated with the temporary desalination plant at Barrow Island, and diving support for the construction of a new supply barge facility. Neptune will also provide provision of: construction support and dive support of vessels and associated crews; offshore diving systems and associated personnel; hydrographic/marine survey equipment and associated personnel; and an offshore construction supervisor to oversee operations onboard the Marine & Civil construction barge. The Greater Gorgon project lies 43 to 87 miles (69 to 140 kilometers) off the northwestern coast of Western Australia and is operated by Chevron.

Chevron Signs Deal with Nippon for Gorgon LNG
Type: Contract Award

Jan. 2010 - Chevron and Nippon Oil Corporation signed a Heads of Agreement for the delivery of .3 million metric tons per year (MTPY) of LNG from the Gorgon project for 15 years. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia is the Greater Gorgon area. Chevron is the operator of Gorgon and holds a 47% interest.

Chevron, Chubu Electric Sign Agreement for Gorgon's LNG
Type: Status Update

Dec. 2009 - Chevron signed a binding long-term Sales and Purchase Agreement with Chubu Electric Power for a portion of Chevron's share of LNG from the Gorgon Project. Under the agreement, Chevron will supply Chubu Electric with 1.44 million metric tons per year of LNG for 25 years, and Chubu intends to purchase .417% equity from Chevron's stake in the project. The Gorgon JV plans to commercialize Greater Gorgon through extensive subsea developments, subsea pipelines and an LNG facility onshore Barrow Island for an estimated US $11 billion.

Chevron Makes Deepwater Gas Discovery at Satyr-1
Type: New Discovery

Dec. 2009 - Chevron made another natural gas discovery in the Carnarvon Basin offshore Western Australia with its Satyr-1 well. The ENSCO 7500 semisub drilled the Satyr-1 exploration well in a water depth of 3,510 feet (1,070 meters) to a total depth of 14,960 feet (4,560 meters),encountering 425 feet (130 meters) of net gas pay. Both Satyr-1 and the previously announced Achilles-1 are expected to supply additional natural gas to the nearby Gorgon project. Both wells are situated in the WA-374-P permit area, located roughly 100 miles (161 kilometers) offshore in the Greater Gorgon Area, which incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

Gorgon LNG Project Breaks Ground In Western Australia
Type: Facility Construction

Dec. 2009 - The construction of a three-train, 15 million metric ton per year LNG facility for the Gorgon LNG Project commenced on Dec. 1, 2009. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters). The field's subsea developments will be tied-back to the onshore Barrow Island LNG plant via pipelines and control umbilicals. The project is expected to come on stream in 2014.

Chevron Selects Saipem for Gorgon Marine Structures Project
Type: Contract Award

Nov. 2009 - Saipem and Leighton Contractors have been awarded an EPC contract from Chevron for the Gorgon LNG jetty and marine structures project. The awarded contract consists of the engineering, procurement, fabrication, construction and commissioning of the LNG jetty for the Gorgon LNG field. The work is targeted for completion in 2013. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

Hyundai Heavy Gets $2.06B Order for Gorgon LNG Project
Type: Contract Award

Oct. 2009 - South Korea's top shipbuilder Hyundai Heavy Industries Co. said it has signed a $2.06 billion deal to build core parts of a LNG plant for Australia's Gorgon LNG project. Under the deal, Hyundai Heavy will build the LNG plant's core facilities in Ulsan, South Korea, and deliver them to Barrow Island in Australia by October 2013, the company said in a statement.

Chevron Hits Additional Gas at Gorgon Area's Achilles
Type: New Discovery

Oct. 2009 - Chevron announced a natural gas discovery in the Greater Gorgon area, offshore Australia. The Achilles-1, located in the WA-374-P permit area, was drilled to a total depth of 14,800 feet (4,500 meters) and encountered 325 feet (100 meters) of net gas pay. The well was drilled with the ENSCO 7500, an ultra-deepwater semisubmersible which has now moved on to Chevron's Satyr-1 exploration well. Chevron Australia operates Achilles with a 50% working interest while Shell Dev. (Australia) and ExxonMobil Australia each hold a 25% interest.

Aker Solutions Aces MEG Contract for Gorgon Project
Type: Contract Award

Oct. 2009 - Aker Solutions' contract with Chevron has been extended to include the delivery of a monoethylene glycol (MEG) system to the Gorgon project located on the Australian North West shelf. The total contract value for Aker Solutions is approximate US $51 million (NOK 300 million). Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

Chevron, Partners Charge Ahead with Gorgon LNG Project
Type: Status Update

Sep. 2009 - Chevron will proceed with the development of the Gorgon natural gas project offshore Western Australia. Development proposals for the project were approved today by the Western Australian State Premier Colin Barnett, and production licenses were granted by the Australian Minister for Resources and Energy Martin Ferguson AM, MP. The Gorgon Project, operated by the Australian subsidiary of Chevron (50%) in joint venture with ExxonMobil (25%) and Shell (25%), is currently estimated to cost US $37 billion (AU$43 billion) for the first phase of development. First gas is planned for 2014.

Chevron Clinches Gorgon LNG Deals with Japanese, Korean Cos
Type: Status Update

Sep. 2009 - Australian subsidiaries of Chevron have signed three binding long-term Sales and Purchase Agreements (SPAs) for Chevron's share of LNG from the Gorgon project. The agreements are for a total supply of nearly 3 million tons per annum (MTPA) of LNG to Osaka Gas, Tokyo Gas, and GS Caltex. Chevron will supply Osaka Gas 1.375 MTPA of LNG for 25 years. Osaka Gas will also purchase 1.25% equity in the Gorgon Project. Tokyo Gas will be supplied 1.1 MTPA over 25 years and will purchase a 1% equity stake. Supply from both agreements is expected to commence in the second half of 2014. Chevron expects further sales of Gorgon LNG to be executed in the coming months.

Minister Offers Production Licenses for $50B Gorgon Project
Type: Status Update

Sep. 2009 - Mines and Petroleum Minister Norman Moore offered the Gorgon Joint Venture production licenses for its biggest gas fields to supply the $50 billion Gorgon LNG project. Moore said the offer of five production licenses would help the Gorgon JV reach a final investment decision. The Minister said the project would boost the State's development and growth and help maintain WA's powerhouse role in the nation's economy. The Io-Jansz and Gorgon fields contain more than 30 Tcf, giving the project an estimated 30-year lifespan.

Premier Barnett Welcomes Federal Decision on Gorgon
Type: Status Update

Aug. 2009 - Premier Colin Barnett has welcomed today's Federal Government environmental approval to enable the development of the Gorgon project on Barrow Island. Barnett said the decision marked the final step in a very long process of State and Commonwealth environmental approval for the project. Following today’s approval there are three key approvals that need to happen: final investment decision by the joint venture partners to go ahead with the Gorgon project, offer of production licenses, premier must give Development Approval for the project under the Barrow Island Act. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

Kentz Snags Second Gorgon Contract
Type: Contract Award

Aug. 2009 - Kentz was awarded a telecommunications package by Chevron for the Gorgon Project in Western Australia. The contract value is approximately US $125 million and includes the design, supply, installation, testing and commissioning of the telecommunications scope on Barrow Island. Located about 43 to 87 miles (70 to 140 kilometers) off the northwestern coast of Western Australia in the Carnarvon Basin and on the Northwest Shelf, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet (220 to 1,300 meters).

Chevron's Gorgon Gets Green Light from Environment Minister
Type: Status Update

Aug. 2009 - Environment Minister Donna Faragher gave final environmental approval for the proposed Gorgon gas development on Barrow Island. Final approval for the revised and expanded project was granted with strong, new environmental conditions to provide higher levels of protection for regionally significant coral reefs and flatback marine turtles. Located off the northwestern coast of Western Australia in the Carnarvon Basin, the Greater Gorgon area incorporates a number of gas fields in waters ranging from 722 to 4,265 feet deep (220 to 1,300 meters).

Minister Determines Appeals for Chevron's Gorgon Project
Type: Status Update

Jul. 2009 - Environment Minister Donna Faragher determined appeals against the Environmental Protection Authority's report on the revised and expanded proposed Gorgon gas development on Barrow Island. In determining appeals, Faragher agreed that there was a need for better protection of high value coral adjacent to the project. As such, monitoring will be extended to significant coral reef outcrops outside impact zones. For the flatback marine turtles, the Minister has determined that artificial light emissions should be minimized to protect the local population. For the first time, management of light emissions will be required as a project condition. Other improvements to conditions include: a requirement for the proponent to continue monitoring for subterranean fauna, consistent with EPA recommendations, and noise emissions to be incorporated into the long-term marine turtle management plan and other plans as required.

Chevron Welcomes EPA's Decision on Western Australia's Gorgon Project
Type: Operator Update

Apr. 2009 - The Western Australian EPA's revised and expanded proposal on the Chevron-operated Gorgon Project will add a third 5 million metric-tons-per-year of LNG train to the original two-train proposal already approved for Barrow Island. Chevron will continue to assess the conditions as it works toward a final investment decision in the second half of this year. The Gorgon LNG plant will be supplied with gas from the Gorgon field offshore Australia. The Barrow Island LNG facility will separate gas and condensate received from the Greater Gorgon gas fields.

Chevron's LNG Gorgon Project Set for EPA's Decision
Type: Status Update

Apr. 2009 - Chevron is asking permission from authorities to expand its Gorgon LNG project capacity to 15 million metric tons a year to address rising industry cost pressures. Western Australia's EPA plans to make a recommendation that Gorgon's capacity be expanded by half, which is subject to a two-week public appeal process. The Gorgon LNG plant will be supplied with gas from the Gorgon field offshore Australia. The Barrow Island LNG facility will separate gas and condensate received from the Gorgon gas fields.

Pontus
Discovery (Drilled) - Jul 23, 2012 to -

Yellowglen
Discovery (Drilled) - Jan 2010 to -

Satyr
Discovery (Appraised) - Jan 17, 2012 to -

Appraisal Drilling - Nov 30, 2011 to Jan 16, 2012

Discovery (Drilled) - Dec 14, 2009 to Nov 29, 2011

Exploratory Drilling - Oct 16, 2009 to Dec 13, 2009

Achilles
Discovery (Drilled) - Sep 2009 to -

Achilles-1 was drilled to TD of 14,800' (4,500 mtrs)& encountered 325' (100 mtrs) of net gas pay.

Exploratory Drilling - Jul 2009 to Sep 2009

ENSCO 7500 Semisub drilled Achilles-1 exploration well at WA-374-P

Chandon
Under Development - Jun 2006 to -

The well is in the Western section of the Greater Gorgon development area. Development plans call for subsea tie-back of Greater Gorgon fields once production decreases from the Gorgon and Jansz fields.

Discovery (Drilled) - Jun 2006 to Jun 2006

The Chandon-1 was drilled to a total depth of 3,124 meters by the Jack Bates. The discovery well was spud on June 21, 2006.

Greater Gorgon Subsea
Under Construction - Oct 2009 to -

It is currently under construction and once completed, will become Australia's fourth LNG export development.

Prospect - 2001 to Oct 2009

Field development plan is currently under review by Australian government, FEED in process

Jansz
Under Development - Jul 2003 to -

Development plans for the Jansz field include a subsea well center on the field and a pipeline to the Greater Gorgon LNG plant on Barrow Island. The development plans is currently awaiting approval from the Australian government and undergoing FEED.

Discovery (Appraised) - Jul 02, 2003 to Jul 03, 2003

The production test in the Jansz gas field has demonstrated the field's extensive production potential. The Jansz-3 well flowed at a rate of more than 72 MMcf/d.

Appraisal Drilling - Apr 2000 to Jun 2003

Two appraisal wells drilled: 1. Jansz-2 drilled to a total depth of 3,285 meters by the GSF Jack Ryan in 11/2002 2. Jansz-3 drilled to a total depth of 2,966 meters by the GSF Jack Ryan in 06/2003

Discovery (Drilled) - Apr 2000 to Apr 2000

Jansz-1 drilled to a total depth of 2,985 meters by the Pride South Pacific

Maenad
Under Development - Mar 2000 to -

Field development plans call for subsea tie-back of the Greater Gorgon fields once production from the Jansz and Gorgon fields declines.

Discovery (Drilled) - Mar 2000 to Mar 2000

Maenad-1 was drilled to a total depth of 3,680 meters by the Pride South Pacific.

Urania
Under Development - Jan 2000 to -

Field development for the Greater Gorgon area includes subsea tie-back after production declines from the Gorgon and Jansz fields.

Discovery (Drilled) - Jan 2000 to Jan 2000

Urania-1 was drilled to a total depth of 4,010 meters by the Pride South Pacific

Orthrus
Under Development - Oct 1999 to -

The Orthrus discovery will further support Chevron's initiatives to commercialize the Gorgon area gas fields through LNG and domestic gas markets. Field development plans call from subsea tie-backs of Greater Gorgon fields once production from the Gorgon and Jansz fields declines.

Discovery (Appraised) - Oct 1999 to Oct 1999

Results indicate gas pay in a high quality reservoir zone with a total net gas pay of 53 meters over a 91 meter gross interval.

Discovery (Drilled) - Oct 1999 to Oct 1999

The Orthrus-1 was spudded on Oct. 1, 1999 and reached total depth on Oct. 15.

Geryon
Under Development - Sep 1999 to -

Geryon will further support the initiative to commercialize the Gorgon area gas fields through LNG and domestic gas markets. Development plans include subsea tie-backs to Greater Gorgon fields once production decreases from the Gorgon and Jansz fields.

Appraisal Drilling - Sep 1999 to Sep 1999

Results indicate hydrocarbon gas pay in three high-quality reservoir zones with a total net pay of 113 meters over a 242 meter gross interval.

Discovery (Drilled) - Sep 1999 to Sep 1999

The Geryon-1 well was spudded on Aust. 31 and reached total depth of 3,515 meters on Sept. 14.

Io
Discovery (Drilled) - Jan 2001 to Jan 2001

Io-1 was drilled to a total depth of 4,598 meters by the Pride South Pacific

Under Development - Jan 1981 to -

Io-1 was cased and suspended on January 14, 2001. Development plans for the Greater Gorgon fields call for subsea tie-back after the production decreases from the Gorgon and Jansz fields.

Gorgon
Under Development - Jul 1983 to -

currently under development, awaiting development approval from Australian government, undergoing FEED

Appraisal Drilling - Jan 1981 to Jul 1983

Two appraisal wells drilled: 1. North Gorgon: total depth, 4,500 meters; drilled by the Ocean Prospector, 12/1982 2. Central Gorgon 1: total depth, 4,598 meters; drilled by the Ocean Prospector, 07/1983

Discovery (Drilled) - Jan 1981 to Jan 1981

Gorgon-1: total depth 4,401 meters, drilled by the Southern Cross

Update History
The SubseaIQ Team works everyday to provide you with the latest information on the offshore field development market. The following table provides you with a detailed record of each addition and update made to this project by the SubseaIQ team.
UPDATE TYPE DATE DAYS AGO
Field Updated Sep 19, 2012 248
Activity Added Sep 19, 2012 248
Field Added Jul 23, 2012 306
Field Status Added Jul 23, 2012 306
Activity Added Jul 23, 2012 306
Project Description Updated May 23, 2012 367
Project Description Updated May 14, 2012 376
Facility Updated May 14, 2012 376
Field Updated May 14, 2012 376
Field Updated Apr 02, 2012 418
Facility Status Updated Feb 21, 2012 459
Facility Updated Feb 21, 2012 459
Field Updated Feb 21, 2012 459
Field Status Updated Jan 19, 2012 492
Field Status Added Jan 19, 2012 492
Field Updated Jan 19, 2012 492
Activity Added Jan 19, 2012 492
Activity Added Jul 29, 2011 666
Field Updated Jul 29, 2011 666
Field Updated Jul 19, 2011 676
Activity Added Jul 19, 2011 676
Field Updated Jul 14, 2011 681
Activity Added Jul 14, 2011 681
Project Description Updated Jul 14, 2011 681
Facility Updated Jul 14, 2011 681
Project Description Updated Jun 24, 2011 701
Field Updated Jun 03, 2011 722
Activity Added Jun 03, 2011 722
Project Description Updated Jun 02, 2011 723
Activity Added May 10, 2011 746
Project Description Updated May 05, 2011 751
Field Updated Feb 10, 2011 835
Activity Added Feb 09, 2011 836
Activity Added Dec 16, 2010 891
Field Updated Dec 16, 2010 891
Field Updated Oct 11, 2010 957
Activity Added Oct 11, 2010 957
Activity Added Jun 21, 2010 1069
Field Updated Jun 21, 2010 1069
Project Description Updated May 25, 2010 1096
Project Description Updated May 19, 2010 1102
Facility Updated May 07, 2010 1114
Activity Added May 06, 2010 1115
Project Description Updated Apr 09, 2010 1142
Project Description Updated Apr 05, 2010 1146
Field Updated Mar 26, 2010 1156
Activity Added Mar 26, 2010 1156
Field Updated Mar 09, 2010 1173
Activity Added Mar 05, 2010 1177
Field Updated Mar 03, 2010 1179
Activity Added Mar 03, 2010 1179
Project Description Updated Feb 23, 2010 1187
Field Added Jan 26, 2010 1215
Field Status Added Jan 26, 2010 1215
Field Updated Jan 26, 2010 1215
Activity Added Jan 26, 2010 1215
Field Updated Jan 12, 2010 1229
Activity Added Jan 12, 2010 1229
Activity Added Jan 07, 2010 1234
Field Updated Dec 16, 2009 1256
Activity Added Dec 16, 2009 1256
Activity Added Dec 14, 2009 1258
Field Added Dec 14, 2009 1258
Field Updated Dec 14, 2009 1258
Field Status Added Dec 14, 2009 1258
Facility Updated Dec 01, 2009 1271
Activity Added Dec 01, 2009 1271
Field Updated Dec 01, 2009 1271
Field Updated Nov 13, 2009 1289
Activity Added Nov 13, 2009 1289
Facility Status Updated Nov 02, 2009 1300
Facility Status Added Nov 02, 2009 1300
Field Updated Oct 30, 2009 1303
Project Description Updated Oct 21, 2009 1312
Field Updated Oct 21, 2009 1312
Activity Added Oct 21, 2009 1312
Field Added Oct 20, 2009 1313
Field Status Updated Oct 20, 2009 1313
Field Status Added Oct 20, 2009 1313
Field Updated Oct 20, 2009 1313
Activity Added Oct 19, 2009 1314
Activity Added Oct 01, 2009 1332
Activity Added Sep 14, 2009 1349
Activity Added Sep 10, 2009 1353
Activity Added Sep 01, 2009 1362
Activity Added Aug 26, 2009 1368
Activity Added Aug 21, 2009 1373
Field Updated Aug 10, 2009 1384
Activity Added Aug 10, 2009 1384
Activity Added Jul 29, 2009 1396
Activity Added Apr 30, 2009 1486
Activity Added Apr 24, 2009 1492
Facility Updated Jan 05, 2009 1601
Field Updated Jan 05, 2009 1601
Project Description Added Nov 24, 2008 1643
Field Added Sep 25, 2008 1703
Facility Added Sep 25, 2008 1703
Facility Status Added Sep 25, 2008 1703
Field Status Added Sep 25, 2008 1703

    Project Update History Search - View all the lastest updates made by the SubseaIQ team.
 
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Facility Name Greater Gorgon Subsea
Duty Gas
Operator Chevron
Current Status Under Construction since 2009
Host Type Subsea Tieback
Water Depth 1,300 m / 4,290 ft
Dev.Cost n/a
 
Region Australia
 
Location WA-18-R, WA-267-P, WA-268-P, WA-25-P
 
Field Name Gorgon
Discovery Date Jan 1981
Block WA-25-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth n/a
Field Name Jansz
Discovery Date Apr 2000
Block WA-18-R
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth n/a
Field Name Io
Discovery Date Jan 2001
Block WA-267-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth 1,352 m / 4,462 ft
Field Name Chandon
Discovery Date Jun 2006
Block WA-268-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth 1,200 m / 3,960 ft
Field Name Orthrus
Discovery Date Oct 1999
Block WA-267-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth 1,200 m / 3,960 ft
Field Name Geryon
Discovery Date Sep 1999
Block WA-267-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth 1,232 m / 4,066 ft
Field Name Urania
Discovery Date Jan 2000
Block WA-267-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth n/a
Field Name Maenad
Discovery Date Mar 2000
Block WA-267-P
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth n/a
Field Name Achilles
Discovery Date Sep 2009
Block WA-374-P
Reserve Type Gas
Current Status Discovery (Drilled)
Production Start
Water Depth n/a
Field Name Satyr
Discovery Date Dec 2009
Block WA-374-P
Reserve Type Gas
Current Status Discovery (Appraised)
Production Start
Water Depth 1,070 m / 3,531 ft
Field Name Yellowglen
Discovery Date Jan 2010
Block WA-268-P
Reserve Type Gas
Current Status Discovery (Drilled)
Production Start
Water Depth n/a
Field Name Pontus
Discovery Date Jul 2012
Block WA-37-L
Reserve Type Gas
Current Status Discovery (Drilled)
Production Start
Water Depth 210 m / 693 ft