India’s Hydrocarbon Outlook 2024 184 A Report on Exploration & Production Activities 3.1.5 Case Studies: Insights into key projects A. RG (East)-CBM-2001/1: The CBM Block RG(East)-CBM-2001/1, covering an area of approximately 500 Sq.km, was awarded to M/s Essar Oil Ltd in 2002. The block is under production since July 2016. Some of key highlights of the CBM project in RG(East) are: • Drilling of more than 400 development wells. • Current production rate is 0.9 MMSCMD. • Implementation of technological advancements as under: a. Advanced Chemical Stimulation: To clear coal fines from the zones to eliminate potential well failure issues like rotor locking, techniques like Surfactant Flushing & Verde Chem trials are under trial. These may help in clearing the near-wellbore damage and further enhancing water mobility and gas production. b. Microbial techniques to enhance oil recovery by breaking down organic materials: This technique facilitates the microbial communities involved in the dynamic process of methanogenesis to further increase the methane production from the biodegradation of coal over timescales. c. Use of HVFR (High Viscosity Friction Reducer): It is used as it has very less residue as compared to Guar-based linear gel to increase frac half-length. d. Drilling of horizontal wells: Planned to drill Horizontal wells in deeper, tight CBM reservoirs to open up greater reservoir contact area. • Extensive data acquisition programme is underway in the deeper area to identify opportunities in deeper CBM to open-up newer areas of development. • The exploration of shale gas is also at the planning stage. B. SP (West)-CBM-2001/1 The CBM Block SP(West)-CBM-2001/1, covering an area of approximately 500 Sq.km, was awarded to M/s Reliance Industries Ltd in 2002. The block is under production since March 2017. Some of key highlights of the CBM project in SP(West) are: • Drilling of more than 300 development wells. • Current production rate is 0.7 MMSCMD. • To ramp up production from block, M/s RIL has initiated 40 multi-lateral horizontal well program and so far, drilled 17 wells, out of which 4 are bilateral, 11 are trilateral and 2 are quadrilateral wells. The longest individual lateral achieved is 1,222m and the highest cumulative lateral length in a well (quadrilateral well) is 3,568m. From the 15 wells connected, the CBM production has jumped to 0.2 MMSCMD.
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