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较详细地介绍了“压胀松动”增产技术的施工工艺过程和现场施工效果。油井“压胀松动”施工设计中 ,药量的计算及装药延时设计基于油层岩石动态力学参数的测定 ,特别是油层岩石产生压胀的 ζ值的大小。采用理论与实践相结合方法 ,论述了压裂弹体设计、施工中的弹体装配、引爆工艺、施工工艺关系和现场施工的成败 ,并讨论和分析了套管井套管破坏的预防和保护问题。最后对在子长油矿进行的 42 0 7裸眼井和 42 4 2套管井“压胀松动”现场试验的工艺效果和地质效果进行了分析 ,指出该技术是一项极有前途的增产新技术。
Introduced in detail the construction process and site construction effect of “pressure-expansion loose” stimulation technology. In the design of oil well “pressure swinging and loosening”, the calculation of the dose and the design of the loading delay are based on the determination of the dynamic mechanical parameters of the reservoir rock, especially the magnitude of the ζ value of the reservoir rock under pressure. The combination of theory and practice is discussed. The design of fracturing projectile, the assembly of the projectile, the detonation process, the relationship between construction technology and the success of on-site construction are discussed, and the prevention and protection of casing casing destruction are discussed and analyzed . Finally, the technical and geological effects of field tests on “open loosening” of 42 0 7 openhole and 42 4 2 cased wells in Zichang oilfield are analyzed. It is pointed out that this technology is a promising new stimulation technology.