UKCS: Operations update on the Lancaster field

Lancaster EPS

For a significant portion of the period from First Oil (June 4^th, 2019) to date, production has been constrained using only one of two subsea flowlines, as a result of operational necessity.

This has limited maximum production capacity and Hurricane’s ability to carry out activities planned to increase the Company’s understanding of the reservoir’s performance.

 Operations have now recommenced with two flowlines.

Lancaster field contour map. Source: Hurricane Energy

Hurricane‘s analysis of water production continues to indicate the presence within expected ranges of stranded or perched water, with no indications of aquifer water.

Production over the last month has been through a single flowline and therefore water cut cannot be attributed between the two wells. Further data will be available now that production through both flowlines has recommenced.

This will facilitate a better understanding of individual well performance and water cut. It will also allow planned flow rate variation to be undertaken, in order to optimise well performance.

According to Hurricane, the Lancaster field has multiple reservoirs. The main reservoir is the fractured Basement of Precambrian age at a depth of approximately 1,000 m TVDSS at its shallowest point.

In addition, there are two smaller clastic reservoirs overlaying the Basement: the Victory Sandstone, a small pinch-out trap over the northwest of the main Basement structure, and the Rona Sandstone encountered on the west side of the structure.

Schematic of the field showing the relationship of the reservoirs and wells. Source: Hurricane Energy CPR study 2017

Lincoln Crestal Update

Lincoln Crestal is the second well in a three-well programme on the Greater Warwick Area, following the Warwick Deep well.

A 720 m horizontal section of fractured Precambrian basement reservoir was drilled at Lincoln Crestal. The operations have now moved onto preparation for drill stem testing.

Top Basement Amplitude Extraction (showing ‘brights’ on the highs and ‘dims’ on flanks). Source: Hurricane Energy CPR study 2017