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Australia & Timor Sea Joint Petroleum Development Area

The Ichthys LNG Project and Surrounding Blocks

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Contract area (block) Project status Venture company (established) Interest owned (*Operator)
(As of July 31, 2018)
WA-50-L In production
(Production of gas from the wellhead)
INPEX Ichthys Pty Ltd
(April 5, 2011)
INPEX Ichthys Pty* 62.245%
TOTAL 30.000%
CPC 2.625%
Tokyo Gas 1.575%
Osaka Gas 1.200%
Kansai Electric Power 1.200%
JERA 0.735%
Toho Gas 0.420%
WA-51-L
WA-84-R Under exploration
(blocks under appraisal on the discovery of gas and condensate)
INPEX Browse E&P Pty Ltd
(October 21, 2013)
INPEX Browse E&P Pty 40%
Santos* 60%
WA-85-R
WA-86-R
WA-56-R INPEX Browse E&P Pty* 60%
TOTAL 40%
WA-80-R INPEX Browse E&P Pty 20.0000%
Santos* 47.8306%
Chevron 24.8300%
Beach 7.3394%
WA-281-P
WA-57-R INPEX Browse E&P Pty 20%
Santos* 30%
Chevron 50%
WA-58-R
WA-74-R
WA-79-R
WA-81-R
WA-274-P Under exploration
WA-285-P INPEX Browse E&P Pty* 62.245%
TOTAL 30.000%
CPC 2.625%
Tokyo Gas 1.575%
Osaka Gas 1.200%
Kansai Electric Power 1.200%
JERA 0.735%
Toho Gas 0.420%
WA-494-P INPEX Browse E&P Pty* 100%
WA-532-P
WA-533-P
WA-343-P INPEX Browse E&P Pty* 60%
TOTAL 40%
AC/P36 INPEX Browse E&P Pty* 50%
Murphy 50%
WA-513-P INPEX Browse E&P Pty 40%
Santos* 60%
WA-514-P

CPF Ichthys Explorer after arriving at Ichthys gas-condensate field

Onshore LNG plant

Ichthys LNG Project

The necessary commissioning for the onshore LNG plant first train, the Gas Export Pipeline (GEP), the Floating Production Storage and Offloading (FPSO) facility, the production wells and the subsea production systems was completed in March 2018, while similar commissioning and preparation work for the launch of the Central Processing Facility (CPF) was completed in May. Following the completion of final safety verifications including additional verifications concerning electrical equipment, production of gas from the wellhead commenced in July 2018.

Surrounding Blocks

INPEX holds 20 exploration blocks in the vicinity of the Ichthys gascondensate field and is currently engaging in exploration activities. Of this total, exploration work has led to the discovery of gas at 11blocks (WA-281P, WA-56-R, WA-57-R, WA-58-R, WA-74-R, WA-79-R, WA-80-R, WA-81-R, WA-84-R, WA-85-R, WA-86-R). Evaluation work is now being performed on these discoveries. In the event that substantial amounts of crude oil and natural gas are confirmed as a result of this exploration and evaluation activity, synergies and other effects with the Ichthys LNG Project are expected to further expand business.

Ichthys LNG Project

Ichthys LNG Project Website

INPEX Australia Website

Prelude FLNG Project (WA-44-L)

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Contract area (block) Project status Venture company (established) Interest owned (*Operator)
(As of July 31, 2018)
WA-44-L Under development INPEX Oil & Gas Australia Pty. Ltd.
(February 28, 2012)
INPEX Oil & Gas Australia 17.5%
Shell* 67.5%
KOGAS 10.0%
OPIC 5.0%

In June 2012, we acquired from Shell a 17.5% interest in the Prelude FLNG Project, which is located in WA-44-L, approximately 475 km north-northeast of Broome, off the coast of Western Australia. A production, liquefaction and shipment project using FLNG, the Prelude FLNG Project consists of the Prelude and Concerto gas fields and will approximately produce 3.6 million tons per year of LNG, 400 thousand tons per year of LPG at peak and approximately 36 thousand barrels per day of condensate at peak.

Shell (the operator) made the FID on the Prelude FLNG Project in May 2011.

The FLNG sailed away from its construction site in Geoje, South Korea, in June 2017 and arrived in Australian waters in July 2017. Thereafter, the FLNG has been moored and is undergoing commissioning.

Prelude FLNG Project

FLNG commissioning

Van Gogh Oil Field, Ravensworth Oil Field and others

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Contract area (block) Project status
(production on the basis of all fields and average rate of FY2017)
Venture company (established) Interest owned (*Operator)
(As of July 31, 2018)
WA-35-L
(Van Gogh Oil field)
In production
-Crude oil: 7 Mbbld
INPEX Alpha, Ltd.
(February 17, 1989)
INPEX Alpha 47.499%
Quadrant* 52.501%
WA-35-L & WA-55-L Unitization area INPEX Alpha 47.499%
Quadrant* 52.501%
WA-43-L
(Ravensworth Oil Field)
In production
-Crude oil: 5 Mbbld
INPEX Alpha 28.500%
BHPBP* 39.999%
Quadrant* 31.501%
Van Gogh Oil Field, Ravensworth Oil Field and others

Van Gogh FPSO vessel

INPEX acquired interests in offshore Western Australia WA-155-P (Part I) in July 1999, after which the Van Gogh and Ravensworth oil fields were discovered. The Australian Government granted production licenses for the above oil fields as the WA-35-L and WA-43-L blocks, at which oil production commenced in February and August of 2010, respectively. The development of the Coniston Oil Field, which saddles WA-35-L and WA-55-L, was started in December 2011, and crude oil production commenced in May 2015.

Bayu-Undan Project (JPDA03-12)

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Contract area (block) Project status
(production on the basis of all fields and average rate of FY2017)
Venture company (established) Interest owned (*Operator)
(As of July 31, 2018)
JPDA03-12 In production
-Crude oil: 14 Mbbld
-Natural gas: 521 MMcf/d
-LPG: 9 Mbbld
INPEX Sahul, Ltd.
(March 30, 1993)
INPEX Sahul 19.2458049%
ConocoPhillips* 61.3114766%
Santos 19.4427185%
Bayu-Undan Unit INPEX Sahul 11.378120%
ConocoPhillips* 56.943372%
Eni 10.985973%
Santos 11.494535%
Tokyo Timor Sea Resources (JERA/Tokyo Gas) 9.198000%

In April 1993, INPEX acquired an interest in JPDA03-12, a contract area located in the Timor Sea JPDA, which is jointly managed by Australia and East Timor. Exploration within this contract area resulted in the discovery of oil and gas fields. Of these, studies revealed that the Undan structure and the Bayu structure in the adjacent JPDA03-13 contract area were a single structure. The interest holders unitized both contract areas in 1999, allowing joint development of the Bayu-Undan Gas-Condensate Field to proceed. The commercial production and shipment of condensate and LPG started in 2004, and LNG in February 2006.


Bayu-Undan Project (JPDA03-12 Block) and Kitan Oil Field (JPDA06-105 Block)

Bayu-Undan offshore facility

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