Strike Plans Workover of Klebb 1 Well in SCB Gas Project in South Australia

Strike Energy Limited provided Monday an update on operations at its Southern Cooper Basin Gas Project in PEL 96 (Strike 66.67 percent and Operator, Energy World Corporation 33.33 percent) in South Australia.

Operations Status

After a period of steady operation, production from the Klebb 1 beam pump has not been able to be maintained following a shut in as a result of gas build up in the well’s tubing. In order to re-establish stable production at the well location, a workover of the well to replace the downhole pump equipment is now planned to improve the capacity to handle gas inflow.

Production testing at Klebb 2 and 3 has continued, with water rates being maintained at around 500 barrels of water per day (bwpd) given the effective assistance that the wells are providing to Klebb 1 at these rates.

Background

After a period of steady production and reservoir pressure reduction, the well was shut in following a combination of gas breakout and water surging in the tubing string and pressure build up in the casing.

The pump appeared to have initially locked due to gas being produced through the pump mechanism, however, it has not been possible to re-establish stable production during trouble shooting of the gas lock. It is therefore likely that an additional mechanical issue is preventing the pump from returning to normal operation.

Forward Plan

The planned Klebb 1 workover will involve the installation of a new downhole pump assembly, with improved capacity to handle gas inflow designed to mitigate the risk of future interruptions to the production testing program as gas rates build. In addition, the automation system set-up and well operating procedures will be modified. All of the equipment required for the workover is on hand. However, as there are no suitable rigs immediately available in the Cooper Basin, it will take two weeks to mobilize a workover rig to site. The workover should be completed at the end of the month.

The performance of Klebb 1 clearly demonstrates that Klebb 2 and 3 have significantly reduced water production rates required to reduce reservoir pressure in the area bounded by the wells. Therefore, production testing will continue at Klebb 2 and 3 to minimize the time required for Klebb 1 to progress towards commercial production rates once brought back on line.


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