NEW DELHI :
D1/D3 gas field, India’s first deepwater gas field, ceased to produce on Monday after a $1 billion funding and mammoth technological intervention by Reliance Industries and its associate BP Plc of UK prolonged the lifetime of dwindling fields by 4 years, sources stated.
D1/D3 field, in Block KG D6 (KG-DWN-98/3) situated in the Bay of Bengal, was India’s first deepwater gas field to be placed on manufacturing in April 2009. Output, which peaked at over 61 million customary cubic meters per day in 2010, had been on a decline as sand and water ingress compelled wells to shut down one after the opposite.
While on the peak, it was India’s largest gas field, in the final quarter D1/D3 produced a median of simply 1.5 mmscmd.
The sources stated solely three out of the 18 wells drilled on the fields had remained on manufacturing they usually too died on Monday.
In maybe certainly one of its type intervention in a deepsea field, Reliance-BP, by way of use of a mix of complicated strategies, saved the wells flowing at Dhirubhai-1 and three (D1&D3) fields for the final 4 years.
Reliance had to date made 19 oil and gas discoveries in the Krishna Godavari basin. Of these, D26 or MA — the one oil discovery in the block — was the primary field to started manufacturing in September 2008. D1 and D3 fields went onstream in April 2009.
MA field cessation anticipated by September 2018, the sources stated, including the field at its peak had produced 1,08,418 tonnes of oil in May 2010.
MA additionally began producing gas from April 2009, simply when D1 and D6 went dwell. It peaked to 8.four mmscmd in August 2010 earlier than sand and water ingress compelled shutting down of properly after properly. D1 & D3 field too had a peak that yr in March when it touched an output of 61.four mmscmd.
KG-D6 produced about Three trillion cubic toes equal, saving about USD 30 billion in vitality imports.
The sources stated the field infrastructure could be utilized to convey on stream the subsequent set of fields in the block.
The three way partnership has dedicated USD 5 billion ( ₹35,000 crores) of investments in direction of monetizing one other Three trillion cubic toes equal (about 500 Million Barrels of Oil equal) reserves from three initiatives – R cluster, Satellite Cluster and MJ fields.
These initiatives shall be using a lot of the present gas manufacturing amenities, they stated, including as soon as commissioned, the three fields will ship a peak manufacturing of 1 billion cubic toes per day which is about 20 per cent of the present home manufacturing.
Although there have been preliminary setbacks due to geological surprises, the problem was to lengthen lifetime of the field past 2015 due to decrease reservoir stress and water ingress, the sources stated.
Reliance-BP innovated and utilized first of their type options to lengthen field life and maximize restoration, which included sidetrack/substitute wells, discount of arrival pressures, and mitigating the impact of water in the community.
This effort prolonged manufacturing up until this month.
The sources stated regardless of finest efforts, in current instances the field instability exacerbated due to water and sand ingress main to a pointy decline in manufacturing. Consequently, to protect the amenities for future use, the field had to be safely shutdown on Monday.
The field set a number of world benchmarks set in phrases of deepwater operational efficiency – 99.9 per cent uptime, 100 per cent incident-free operations and no safety incident.
Reliance is the operator of KG-D6 block with 66.6 per cent stake, whereas BP has the steadiness.