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酸化是利用酸液的化学溶蚀作用,以及向地层挤酸时的水力作用,溶蚀地层堵塞物和部分地层矿物,扩大、延伸、沟通地层缝洞,或在地层中造成具有较高导流能力的人工裂缝,以恢复和提高地层渗透性,减少油气流入井底的阻力和提高注水井注入能力,从而达到油井增产、水井增注的目的而对地层所采取的各种酸处理措施。本文介绍了油藏地质特征及酸化机理,对贝尔油田不同区块酸化措施效果进行了分析,为油田下一步开发提供技术借鉴。
Acidification is the use of acid erosion of the acid and the role of acid squeeze into the formation of water, erosion of the formation plugging and some stratigraphic minerals, expansion, extension, communication formation stratum hole, or in the formation of high diversion ability Artificial fractures in order to restore and improve formation permeability, reduce oil and gas flow into the bottom of the well resistance and improve the injection well injection ability, so as to achieve the stimulation of wells, well injection purposes and strata taken for a variety of acid treatment measures. This paper introduces the reservoir geological features and acidification mechanism, and analyzes the effect of acidification measures in different blocks of Belle Oilfield, providing technical reference for the next development of oilfields.