Oil well sand prevention method for heavy oil reservoir
A technology for heavy oil reservoirs and oil wells, applied in the field of oil production in oil fields, can solve problems such as high cost and reduced sand production capacity, and achieve the effect of avoiding pump jamming
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[0026] Example: Well Zhao 41-23. At 50°C, the viscosity is 1892.18mPa.s, the asphaltene content is as high as 47.58%, and the sulfur content is 9.78%. The sand is seriously unable to produce.
[0027] 1. Construction preparation
[0028] A. Pull out the production string: pull out the production string for the normal oil production of the oil well. Production strings include tubing, well pumps and sucker rods.
[0029] B. Run the sand washing pipe string, explore the sand surface and wash sand: Run the sand washing pipe string with ball seat and sand washing pen tip in the downhole casing. The sand washing pipe string includes tubing, ball seat, and sand washing pen tip. The sand washing pipe string connects the oil pipe to the ball seat from the top to the bottom of the wellhead, the lower end of the ball seat is connected to the sand washing pen tip, and the oil pipe, the ball seat, and the sand washing pen point are threadedly connected; pump clean water into the sand wa...
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