Vintage Energy boosts gas output with successful workover program at Odin and Vali

Vintage Energy (ASX: VEN) has achieved some early success with workover activities at its Odin-1 and Vali-1 gas fields in central Australia.

Operating on behalf of a joint venture with Metgasco and Bridgeport, Vintage has been undertaking flowline debottlenecking operations at the Southern Flank gas projects.

The company is conducting the programs in an attempt to achieve more stable production from the field.

Back-pressure reduction

The workover program has so far managed to reduce back-pressure, which relates to pressure buildup encountered by gas as it flows through a system.

This is often due to restrictions or equipment and impacts production efficiency.

Vintage expects the reduction to enable it to recover a greater volume of gas per well moving forward.

Immediate effect

The workover has already led to an increase in the raw gas production from Odin and Vali to 3.6 million standard cubic feet per day (MMscf/d), compared to 3.2MMscf/d immediately prior to the commencement of the operations.

The company has also been addressing scaling, which had previously been identified as a major issue leading to declining gas production.

Vintage believes the subsequent chemical injection and cleaning have rectified the interference with accurate metering previously reported.

Scale management

Vintage commenced chemical injection at Odin in February, aimed at managing the level of scale accumulation.

Since the injection program commenced, production rates from the well have been generally stable and demonstrated a consistency that was not present while the meter was affected by scale accumulation.

Managing director Neil Gibbins said the mitigation measures have yielded a strong start to the year and provided a good base for a proposed production uplift program being planned for April.

“The response to pressure optimisation is welcome, as has been the ongoing performance of Odin-1 post scale management,” Mr Gibbins said.