Based on the basic data of Well 329-103 in Changqing Town, the historical data of perforation, the brief history of previous operations and the production situation, it is initially determined that the well has experienced the migration and blockage of solid particles in the formation. At the same time, it may be accompanied by certain scale blockage and polymer blockage. The corresponding unblocking construction plan was compiled, and the combination of tools for going down the well was determined:
- Spring bottom valve generator (1834m), Y221-114 packer (1829m), 73mm tool tubing to wellhead.
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Pump pressure before unblocking: 23MPa; After completion, pump pressure: 20MPa; A total of 60 cubic meters of treated liquid was used. Construction time: 4 hours.
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After the unblocking construction, the daily liquid production increased by 3.11 cubic meters, and the oil production increased by 2.2 tons per day.
The instrument is ready to be lowered into the well
The instrument goes down the well.
