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在油气田勘探与开发过程中,各种作业如钻井、完井、压裂等均会对储层造成一定的伤害。本文针对伏龙泉气田开发过程中出现的复杂现象,从地质特征入手,通过铸体薄片、扫描电镜、X-射线衍射及敏感性趋替试验等,系统的分析了登娄库组气藏储层伤害机理,明确储层具有较强的水敏、酸敏以及水锁等潜在储层伤害机理。针对伏龙泉气田登娄库组气藏的储层伤害机理提出相应的降低储层伤害的对策,从而为气田的生产实践提供依据,实现气井的高产、稳产。
During the exploration and development of oil and gas fields, various operations such as drilling, completion, fracturing and so on will cause some damage to the reservoir. In this paper, according to the complex phenomenon that occurred during the development of Fulongquan gas field, the geological characteristics of the gas reservoirs in Denglouku group were systematically analyzed by means of casting thin slices, scanning electron microscopy, X-ray diffraction and sensitivity alternation test. Damage mechanism, a clear reservoir has strong water sensitivity, acid sensitivity and water lock potential reservoir damage mechanism. Aiming at the reservoir damage mechanism of Denglouku Group gas reservoirs in Fulongquan gas field, the corresponding measures to reduce reservoir damage are put forward, which can provide the basis for gas field production practice and realize the high yield and steady production of gas wells.