Heritage Oil Corporation announces that production has commenced at its 95% owned Zapadno Chumpasskoye field in West Siberia.
Well #226 is currently producing approximately 400 barrels of oil per day (bopd). The field pilot development project, which includes drilling over 50 wells, has now been approved by the federal and local authorities.
Commencement of Production FromWell #226
Production commenced from the newly constructed Zapadno Chumpasskoye oil separation and testing facility in May 2007. Following commissioning of the facility a series of production tests of well #226 have been undertaken at various choke sizes. The well freeflowed
at a rate of up to 540 barrels of oil per day (bopd) of 39 degree API oil, through an 8 mm choke. The reservoir pressure was determined to be 4,140 psi. A total of 4,086 barrels of oil were produced over ten days of tests, through various choke sizes. No water was produced during the tests. Well #226 is currently producing at a daily rate of approximately 400 barrels.
Test results indicate production could be increased by installing a downhole pump. Prior to making this decision, further analysis and reservoir modelling is being carried out to evaluate stimulation potential and assist in reservoir characterisation.
Crude is sold at the local facility. The next stage of field facility construction and the export pipeline tie-in are being fast-tracked in line with expected production increases.
Appraisal Well P#3
Appraisal well P#3 is a deviated well that has been drilled to a depth of 3,360 metres (2,700 metres true vertical depth). Intermediate logging is being conducted prior to coring through the
Jurassic reservoir section, following which the well will be drilled to its target depth of approximately 3,490 metres (2,800 metres true vertical depth), which should be achieved within 10 days. The well will then be logged, cased and suspended prior to skidding the rig to the next surface location for drilling the second deviated appraisal well. A work-over rig will be used to test well P#3 in July with a view to completing it as a future oil producer. Well P#3 is the first well to be drilled in a program comprising three appraisal wells and an initial 16 development wells.
Approval for the Pilot Development Plan for Zapadno Chumpasskoye
The Russian Federal Agency on Natural Resources, Rosnedra, and the State Committee on Field Development in the Khanty Mansisyk Autonomous District, TSKR KMAO, have approved Heritage’s plans for the pilot development of the Zapadno Chumpasskoye field. The development plan includes significant growth in production with the drilling of over 50 wells and the future installation of water flood injection facilities. RPS Energy Canada Limited, trading as RPS Energy, an independent geoscience consultancy firm, estimated the Zapadno Chumpasskoye field contains proved and probable reserves, net to Heritage, of 69 million barrels.