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China Petroleum & Chemical News Network reported on May 31, the technical backbone of the Well Condition Control Technology Research Center of the Zhongyuan Oilfield Petroleum Engineering Technology Research Institute under the scorching sun and successfully solved the jam in Wenliu Oil Production Plant Wen 203-59 Well at 4,068 meters, Chuangdong The deepest record of minor repair equipment in Pu Lao District.
The well was produced after single-sealing and fracturing in February 2014, and the packer was set to a depth of 4,068 meters.
Restricted by objective factors such as the weight of the salvaged pipe string, the low tensile strength, and the small lifting load of the equipment, the conventional methods have high construction risks and are difficult to achieve jam release.
The maximum load of the site construction is 51 tons.
Since 2021, the shock-relief technology has been applied 18 times in the overhaul project of wellbore productivity recovery in the old area of Dongpu, the matching of the same well injection and production project in the North China Oilfield, and the plugging of old wells of gas storage.
Among them, 10 wells were constructed with minor repair equipment, and the success rate reached 70%.
(Wei Xiaomei and Wang Yuan)
