Primeline Energy’s LS23-1-1 well showed little potential for commercial production, offshore China. The company will now continue with the exploration drilling program for the LS30-3-1.
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Image from Primeline. |
The LS23-1-1 well was spudded on 23 September and reached total depth of 2666m on 21 October. Wireline logging data was subsequently acquired. The well encountered sandstone units of Paleocene and early Cretaceous age, drilling through the geological sequence as anticipated and finished in basement rock. It discovered several zones of gas bearing sandstone and evaluation of logging data indicated total cumulative net pay thickness of 14m.
The LS23-1-1 well is in 81m of water in Block 33/07 in the East China Sea and is 24km from the LS36-1 gas field platform.
The LS23-1 prospect is a technical discovery of hydrocarbon but not likely to be a commercial discovery. Therefore, Primeline has plugged and abandoned the well and will proceed with the drilling of the LS30-3-1 well on the basis of the agreed two well work program.
LS30-3-1 is located approximately 20km north of the LS36-1 gas field platform and is targeting a large channel sand prospect. The prospect was originally mapped in 2009/2010 and refined during the 2014/2015 evaluation. The planned TD of the well is 1800m, targeting the same reservoir as that of the LS36-1 gas field.
The drilling rig HYSY941 is currently conducting the final operations for the LS23-1-1 well. Once completed, Primeline’s contractor China Oilfield Service plans to mobilize the rig to the LS30-3-1 location subject to weather and sea conditions, allowance for necessary equipment maintenance and preparation and approval of the operation license.
Read more:
Primeline spuds East China Sea well
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