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高采地区稠油区块存在地层骨架松散,易形成裂缝空洞导致油层与高压水层间窜通及套管外窜通,采油含水上升,采收率降低。我们一般采用挤灰封堵高压水层,但是常规挤灰封堵工艺,在挤灰完毕后要反洗井,在反洗井过程中容易造成挤入封堵层的水泥返吐而造成封堵失败。平推挤入不洗井直接关井带压侯凝挤水泥封堵高压水层技术可以有效的解决上述问题。
The heavy oil blocks in high mining area have loose strata of formations, easy formation of cracks and cavities leading to channeling between the oil layer and high-pressure water layer and to the casing outside, leading to increased oil and water content and lower recovery rate. We generally use squeeze ash to plug the high pressure water layer, but the conventional squeeze ash plugging technology, after squeezing the ash to backwash well, in the anti-washing process is likely to cause the cement plugged into the plugging layer back to block failure. Push the push into the non-wash well directly shut down with pressure Hou pouring cement block high pressure water layer technology can effectively solve the above problems.