MCF Energy provides an update on the continuing testing of the Welchau-1 well in Austria. 

Background

The upper part of the Reifling formation has been perforated, and an initial flow test conducted. The initial flow test did not result in sufficient flow into the well bore for reservoir fluids to enter the tubing string and allow the Reifling reservoir fluid composition to be determined or sampled.

Sampling of the inflow has recovered primarily workover fluids (brine) and traces of black solid particles of unknown composition, which may be affecting well flow. The composition of the solid particles is being analysed at a specialist laboratory.

The well has been left shut in and the workover rig demobilised until further sample analysis and well data become available from Welchau-1.

Forward Program

Well head pressure recording equipment of suitable accuracy will be fitted to the well head to enable the recording of the potential pressure build-up due to well inflow. If sufficient inflow is observed, then further sampling will be undertaken, and the well will be swabbed using wireline to reduce hydrostatic pressure, which may induce further flow.

If hydrocarbons are recovered, it is intended that further testing of the shallowest Reifling formation will be resumed, most likely, after acidization of the reservoir to overcome well bore damage and enhance productivity in the carbonate reservoir.

In parallel with the above-mentioned activities, samples recovered from the testing of the Steinalm formation will be analysed to determine if hydrocarbons are present, as well as to determine the composition and likely source of solid black particles which were also encountered during the Reifling formation flow test.

The results of the well pressure monitoring, sampling, and well fluid analysis are expected to be available early in the new year, after which a decision on further stimulation or testing operations will be taken.

KeyFacts Energy: MCF Energy Austria country profile