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油田油、气水井在开发生产过程中,由于受油、气水运移及各种应力、腐蚀、地质结构及施工措施的影响,一方面固井质量不合格;另一方面使生产井原固井水泥环遭到破坏,或造成油层窜通或地层胶结物被破坏,近井地带形成空洞,或因地层出水,套管破漏使油水井不能正常生产,因此就必须采取挤灰、堵水等措施使油井恢复生产.在进行挤灰和堵水的施工时,为了达到理想的效果,从各个方面考虑都要进行注灰塞,以达到保护生产油层,封堵出水井段的效果.
Oil and gas wells in the development and production process, due to oil, gas and water transport and a variety of stress, corrosion, geological structure and construction measures, on the one hand the cementing quality unqualified; the other hand, the production well cementing The ring is damaged, or cause the formation to pass through or formation cement is destroyed, the formation of near hole wells, or because of formation water, casing leaks so that oil and water wells can not be normal production, it must take squeeze ash, water and other measures So that the oil wells resume production.While squeezing ash and water shutoff construction, in order to achieve the desired effect, from all aspects of consideration must be injected into the plug, in order to protect the production reservoir, plug the effluent well section effect.