Kulczyk Oil Ventures has said Lempuyang-1 well on Block L in Brunei Darussalam will be plugged and abandoned.

The company said that the well will plugged and abandoned due to doubts that unintended gas will flow into the well from perforations or a damaged casing.

The testing at Lempuyang-1 well on Block L in Brunei Darussalam has been curtailed due to safety concerns associated with gas flow into the well that could not be properly controlled.

The Lempuyang-1 well intersected reservoir-quality sands, with gas being flowed to surface from two test intervals.

Some thin gas sands were interpreted at the lower reservoir test interval (3,077m-3,131.5m measured depth (MD) of which 24m were perforated).

The upper reservoir test interval (2,849m-2,867.5m MD of which all 18m were perforated) flowed gas to surface before the operator was forced to cease testing due to a down hole mechanical failure.

The company said that it was positive about the prospectivity of the area, and that data obtained from the well had reinforced this, though integration of well data and 3D seismic data will be needed before future drilling targets were identified.