In total, they are anticipated to produce nearly 15 million metric tons of oil (16.5 tons) and 2.972 bcm of gas. The company’s board approved the plan at its February meeting.
The B-147 field, part of theBassein field and satellite area is being developed at a total estimated capital cost of Rs. 546.15 Crore (nearly $82 million). The field is located about 110 km (68 mi) from the Mumbai shore in water depths of around 70-77 m (230-253 ft).
The field, discovered in March 1991, is a marginal field that would have been otherwise uneconomical to develop on a standalone basis. However, ONGC said that the creation of infrastructure in nearby fields created an opportunity to develop this field by using existing surface facilities in an optimized cost environment.
The B-147 development involves drilling three new wells, installing a new four-slot wellhead platform with associated pipelines and modification in two existing platforms. Oil and gas from this project will be evacuated to ONGC’s onshore terminals at Uran and Hazira, respectively. The project is scheduled for completion by November 2019.
Block BSE-11 is located between the giant Bassein gas field and Vasai East field, falling in the Heera-Panna-Bassein block in India’s western continental shelf. The block is located about 80 km (50 mi) from Mumbai in water 40-45 m (131-147 ft) deep.
The project involves creation of facilities in the form of one new six-slot wellhead platform, along with associated pipelines, topsides modification of two existing process platforms and the drilling of two wells. A peak oil production rate of 1,000 b/d is envisaged, with peak gas production of 0.34 MMscm/d. The project is scheduled for completion by November 2019.
The 4th Phase of Development of NBP field in Bassein and Satellite Asset is being undertaken. The NBP (N B Prasad-D1) field, discovered in 1976, is located in the Western Offshore basin about 200 km (124 mi) from Mumbai city in water depths of about 85-90 m (279-295 ft). The field currently has 34 producers and two water injection wells. Oil production now stands at about 30,000 b/d.
The company says that the 4th Phase field will see the drilling of six new wells with an electrical submersible pump system. One new well platform, the well clamp-on structure, and associated pipelines and power cables will be installed. The project is expected to hit peak oil production of 4,890 b/d during 2019-2020 and is also scheduled for completion by November 2019.