Hindustan Oil Exploration Company Limited announced the successful drilling, completion and testing of its second sub-sea well through a jack-up rig, named well D-1, in Block MB/OSDSF/B80/2016, located in Mumbai Off-shore. The company are delighted to report that in D-1 well production test was carried out over a period of 3 days. D-1 produced significantly more oil during the flow test, compared to first well D-2 test results announced on February 24, 2020. The company are pleased to inform that by keeping the tubing head pressure above 1100 psi, the well was flowing at 48/64' choke the peak of 6,048 barrels of oil with 5.7 million standard cubic feet of gas per day, which in terms of barrel of oil equivalent per day (BOEPD) is 6,998 barrels. Even by opening the choke to 52/64 inch, the tubing head pressure is being maintained in excess of 1100 psi with a peak flow of oil 6,306 barrels and the gas 6.5 million per day, which is 7,389 BOE per day. The two wells drilled and completed in the block B-80 have surpassed our expectation and the average production of oil and gas in oil equivalent terms should exceed 8,000 barrels per day. Additionally, in the D1 well, the company have made a new discovery in Deccan Trap formation of a 6m interval, which is potentially hydrocarbon-bearing as seen from the mud gas and logs. This interval can potentially produce oil and gas which needs to be tested. This discovery will be further appraised in the next well drilling and would add value to the block. Successful execution of this drilling campaign, with both wells completed by Sub-sea well head & tree, installed through a Jack-up Rig, is a feat first time achieved in India by a private oil and gas producer. This adds a significant muscle to the capability of HOEC in offshore marginal field development. Safe completion of second well, despite severe challenges posed by the lockdown, was possible due to the prompt support received from Directorate General of Hydrocarbons, Ministry of Petroleum & Natural Gas, Government of India, Mumbai Police, Mumbai Port Authorities, State Government of Maharashtra, with excellent co-operation received from all Oil Field Services Contractors and the determination of Team HOEC.