OIL PRODUCTION BUILDING IN BELIDA FIELD OFF INDONESIA

Conoco Indonesia Ltd. and partners have achieved phase two production in Belida oil field off Indonesia in the South Natuna Sea.

Phase two oil began flowing Oct. 22 from the BB-01 directional development well. BB-01 is the first of as many as 20 directional development wells to be drilled and placed on production by April 1994 on Belida Platform B (WHP-B). Simultaneous drilling and production will continue on WHP-B until then.

PT Gema SemBrown (GSB) completed WHP-B hookup and commissioning Oct. 4. Belida partners in August 1992 let a $200 million turnkey contract to GSB for detailed engineering, procurement, fabrication, and installation of Belida stage two facilities (OGJ, Nov. 9, 1992, p. 48).

P-B, Belida's second platform and the first major phase two component installed, is a four pile, 20 slot platform designed to handle 65,000 b/d of produced fluid and 33 MMcfd of gas.

BELIDA OVERVIEW

Belida field-wide oil production by the end of October was expected to reach about 90,000 b/d. The field's October oil production through Oct. 21 averaged 84,665 b/d from Platform A (DPP-A).

Belida primary oil production is expected to peak in 1994 at 100,000 b/d.

Belida facilities lie in 150-250 ft of water on the 3.2 million acre Block B production sharing contract (PSC).

Operator Conoco owns a 40% interest in the field, Texaco Block B Natuna Sea 25%, and Chevron International and Inpex Natuna Sea Ltd. 17.5% each.

Block B is held under a 30 year PSC signed in 1968 with Indonesian state oil company Pertamina and extended later to 2018 (OGJ, Jan. 22, 1990, p. 31).

In addition to WHP-B, Belida phase two facilities include a lift gas platform (LGP) and subsea pipelines linking the field's platforms.

Nippon Steel Corp.'s Kuroshio 1 combination barge, working under a GSB subcontract, completed installation Sept. 18 of the WHP-B jacket and Sept. 25 'of the WHP-B deck. GSB fabricated P-B at its Sunda Straits yard in Cilegon, West Java, about 70 miles from Jakarta.

BELIDA PRODUCTION SCHEME

Belida's major phase one facilities include DPP-A and Intan, a 1.3 million bbl floating storage and offloading vessel (FSO). DPP-A oil capacity is 100,000 b/d, with total fluid capacity Of 200,000 b/d.

WHP-B oil production flows to DPP-A through subsea oil and gas pipelines. Combined WHP-B and DPP-A production then flows through subsea lines to the Intan FSO, where it is stored for export on regularly scheduled trading tankers.

Sixteen of 17 development wells drilled on DPP-A are producing, including 15 oil wells and one gas well. Also, 16 DPP-A wells are directional, ranging from 24.5 to 74.9 from vertical.

Six Belida oil wells produce from Miocene upper Arang pay and 10 from Oligocene Udang. The field's lone gas well produces from middle Arang.

All wells to be drilled and produced on WHP-B, including BB-01, are to be deviated more than 65' from vertical.

GSB in June began constructing the Belida LGP. The eight pile, two deck structure is to be installed by August 1994. LGP will inject gas at each platform into Arang and Udang pays to maintain reservoir pressure.

Belida partners have deleted Platform D, a four pile platform identical to WHP-B, from development plans.

GSB is owned jointly by Brown & Root Inc., Houston, Sembawang Engineering, Singapore, and a local partner, Fadel Muhammad.