Galilee Energy has found a small reduction in pump efficiency in some of the Glenaras wells which has been attributed to gas ingress through the pumps resulting in a pump tripping on account of gas lock.
Following the successful completion of the pump enhancement program, all eleven wells have been brought online with flowing bottom hole pressures optimised to reflect the transitional nature of the reservoir behaviour.
These gas-related effects, together with a gradual decline in water production rates corresponding to lowered average flowing bottom hole pressures, are highly encouraging manifestations of pressure depletion in the reservoir, and characteristic of a reservoir in transition.
Galilee Energy advised that while these effects temporarily limit growth in total gas rates, the rate of gas desorbing from coals has continued to increase on a weekly basis.
The desorbing gas rate has increased by over 100 per cent since all wells were brought online with optimised flowing bottom hole pressure.
The gas and water ration in other lateral wells is also continuing to increase, indicating an increasing contribution of gas desorbing from the coals.
Based on observed rates of pressure depletion in nearby observation wells, Galilee expects the outer lateral wells to reach critical desorption around the end of September, and expand the pressure sink area contributing to the production of desorbed gas and increased total gas rate.
Last month managing director David King outlined in the quarterly report that these breakthroughs, as well as its strengthening management team, have the company positioned on a pathway to achieve commercial gas production and become a provider of gas supply for the east coast domestic market.
The technical objective of the Glenaras pilot is to remove rater from the coal sequence in order tor educe the pressure in the coals, with the depressurisation allowing the gas stored in solid solution on the coal grains to be release through the coal seams and into the wells.
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