ONGC pins hope on 2 new Geleki wells

Vol 23, PW 5 (16 Jan 20) News in Brief

ONGC's Nazira-headquartered Assam asset is hoping to make up for production losses during recent protests with high expectations from two horizontal exploration wells.

ONGC hopes wells GKJF_H and GKJJ_H, both spud in October (2019) at the Geleki field, will make up for the lack of new discoveries. GKJF_H is being drilled by a 2000-hp Armcue rig and GKJJ_H by an EV-2000 rig, both owned by ONGC.

"Drilling will go vertically down to 3500 metres and over 500 metres in diversion with 300 metres of horizontal 90-degree drilling," says a source. "We have reached 2700 metres at both wells."

ONGC's operations in Assam have been badly hit by political protests against the controversial Citizenship (Amendment) Act, 2019 since December. Oil production dipped from 2200 t/d (15,400 b/d) to 1650 t/d (11,550 b/d) in December after several wells became choked amid the protests.

"We are reviving to 2132 t/d (14,924 b/d)," we hear. "But winter led to wax deposition after some wells were plugged for 10-12 days during the protests (in the second and third weeks of December).

Workovers and well stimulation are needed." ONGC is also hoping to find new reservoirs with a four-well exploration well programme underway at the Lakwa and Lakhmani fields.