Italian oil and gas major Eni has reported a new gas discovery in Indonesia’s offshore East Sepinggan block through the drilling of the Merakes East prospect. Eni successfully drilled and tested the Merakes East prospect in East Sepinggan block, offshore Kalimantan, Indonesia.
The exploratory well at the Merakes East prospect was drilled to a depth of 3,400m in water depth of 1,592m at which it intersected 15m of gas bearing net sands in two distinct levels of Miocene Age, said Eni.
Located offshore the Kalimantan province, the prospect is 33km away from the Italian firm’s operated Jangkrik field in the south east direction and only 3km east of the Merakes field.
The well has been drilled to a depth of 3,400 m MD in 1,592 m of water, and encountered 15 m of gas bearing net sands in two distinct levels of Miocene Age.
Italian major Eni is gearing up to develop the Merakes gas field offshore Indonesia in the East Sepinggan Block with a six-well drilling campaign. “East Sepinggan drilling is scheduled for March 2019,” said Wisnu Prabawa Taher, a spokesman for SKK Migas, Indonesia’s upstream regulator.
The analysis of test data show that in production configuration the well can deliver 70 MMscfd of gas and 1,000 bpd of associated condensates. The six development wells are scheduled to begin production in second-half 2020 and are expected to pump about 150 MMscf/d.
The operator has identified the sites to drill six wells as part of a plan to develop the Merakes Field as a tie-in to the existing floating production unit (FPU) in the neighboring Jangkrik Field in the Muara Bakau concession.
Eni has been operating in Indonesia since 2001 and currently has a large portfolio of assets in exploration, production and development. Eni, in a statement, said: “The production test, which was limited by surface facilities, recorded an excellent gas deliverability of the reservoir.
It’s allowed to collect all the necessary data to perform all the studies required for the submission of a field development plan for the commercial exploitation of this new discovery.”
The Merakes development plan, approved by the energy and mineral resources ministry at an estimated cost of about $1.1 billion, includes construction of umbilical system, control system and manifolds, and laying subsea pipelines of about 50 km tied in to the existing Jangkrik FPU.
Produced gas will be shipped from the Jangkrik FPU to the Bontang LNG processing facility in East Kalimantan through an existing 72-km (44.7-mile) subsea pipeline.
The new wells will target hydrocarbon reserves located in the Pliocene and other sediments in the field, which are estimated to contain in place reserves of 57 Bcm (2 Tcf) with potential for more. Merakes-1.
The first exploration well, was drilled to a total depth of 2,640 m (8,661 ft) in a water depth of 1,372 m (4,502 ft) and encountered a hydrocarbon column of 60 m (196.8 ft) in high-quality sandstones in the lower Pliocene clastic sequence.
The oil and gas giant revealed that analysis of test data proved that in production configuration, the well could deliver 70 mmscfd of gas and 1000 bbld of associated condensates.
Eni expects that the proximity of the Merakes East gas discovery to the Merakes field will enable it to lower costs and time of the execution of the potential subsea development.
Further, the location of the new gas discovery near the Merakes field will maximize the synergies among the subsea infrastructures, said the Italian company.
Earlier this week, the Indonesian government approved the company’s investment plan for the Merakes development project. As a result, Eni decided to move ahead with the development of the Merakes field located in the Kutei Basin in Makassar Strait.
Production activities are located in the Kutei basin, East Kalimantan, mainly through Jangkrik field, in the Muara Bakau working area, that delivers production in excess of 650 MMscfd.