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Russia: Western Siberia bypassed oil pay found

PetroNeft Resources PLC has discovered a sixth oil field on License 61, Tomsk Oblast, Western Siberia, Russia.

The company reported an unstimulated inflow of 170 b/d of 37° gravity oil from the main Upper Jurassic target at the Sibkrayevskaya 372 well on the northeastern part of the license.

The well was a follow-up to Well 370 drilled in 1972. A comprehensive reinterpretation of the vintage well logs and drilling data from Well 370 using digitized logs and modern interpretation tools had indentified potential bypassed pay in the Upper Jurassic J1 interval.

Well 372 topped the J1 reservoir as expected at minus 2,350.5 m true vertical depth. Preliminary evaluation of logs indicates 12.6 m of net pay with good reservoir properties and oil saturation throughout, exceeding predrill estimates.

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