Remarkable effect of blocking channeling and leakage control in the thermal recovery block of Henan Oilfield

The heavy oil thermal recovery block reservoir of Chunguang Oilfield has the characteristics of loose cementation, easy sand production and close to water layer
.
With the prolongation of the thermal recovery cycle, part of the cement ring is damaged, and the leaking wells corresponding to the water layer continue to increase

Faced with this complex problem, the process and technical personnel of the Xinjiang Oil Production Plant Development Institute expanded their ideas and innovatively adopted the "thermal recovery channeling + casing subsidy + thermal recovery sand control" composite workover technology to solve this type of multiple complex fault wells
.

The composite workover technology optimizes the channel sealing construction process, chooses to squeeze the channel sealing agent from the casing leakage section to implement thermal recovery channel sealing, adopts the thermal recovery high-incline casing subsidy technology, implements subsidy sealing on the casing leakage section, and implements circulation to the production layer Filling and sand control completion
.

The process has achieved good results after the implementation of K436-36H and K436-42H, and the daily production capacity has been restored to more than 12 tons.
As of July 13, the cumulative oil increase has been 1,626 tons
.

The successful implementation of this process provides technical support for the comprehensive management of the heavy oil thermal recovery block in the lower part of the Chunguang Oilfield of Henan Oilfield
.
At present, another 8 wells are selected for channeling plugging treatment

(Qiao Qingfang and Zhang Bingyu)