According to the preliminary results of the flowback and production testing of Cambay-77H, all proof-of-concept objectives have been achieved and the commercial development of Cambay Field in India using multistage fracturing technology is feasible, Oilex Ltd. said in a press release.
Cambay-77H was designed as a proof-of-concept well with a short 350-m (1,148-ft) lateral. IP over a 24-hour period was 57.5 Mcm/d (2.03 MMcf/d) of equivalent, with 55% hydrocarbon liquids. The total production during flowback and testing was 1.8 MMcm (62.3 MMcf) of equivalent. Total operations water recovered was 23,732 bbl (88%); no formation water has been identified during flowback and testing.
Oilex has the first and only model currently to be successfully calibrated using actual production and compositional data from a multistage fracked horizontal well in the Cambay Basin.
The flowback and production test data have been used to analyze the performance of Cambay- 77H, refine the calibration of the production model used to assess Y zone deliverability, predict ongoing recovery of oil and gas from Cambay-77H, review preliminary well designs and generate forecast “type curves” for the next drilling campaign.
The results indicate recovery of significant volumes of oil and gas can readily be achieved. Importantly, Cambay-77H and the model confirm that the tight Eocene formation in the Cambay Field is amenable to this form of fracture treatment, leading to the conclusion that the Y zone can be commercially developed with this technology.
All proof-of-concept activities have been successfully completed and the objectives achieved. A full data package for Cambay-77H is being compiled and combined with other Cambay Field production data for an independent reserves and resource assessment update. This update may result in conversion of some current contingent resources to reserves, and the results will be disclosed to the market at that time.
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