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文东油田属于异常高温、高压、低渗透复杂断块油田。由于其油层埋藏深、储层物性差、层间差异大、油气比高及含盐量大的特点 ,给该油田的开发提出了严峻的课题。在没有同类油田可借鉴的情况下 ,经过 11a的开发实践 ,摸索出了一套适合文东复杂断块油田开发的成功经验。通过对油田实施高压注水 ,地层压力回升 ,油田递减减缓 ,但要恢复到原始地层压力却很困难 ;压裂改造在油井投产初期和注水见效之后 ,通过优化选井和压裂方式 ,可以取得较好的增油效果 ;气举采油有效克服了高油气比和结盐、结蜡及井深、井况差的影响 ,提液效果好 ;逐层上返实验提高了采油速度和水驱动用程度 ,改善开发效果 ,为解决层间干扰、平面效率低等问题提供了经验借鉴。
Wudong oil field belongs to abnormal high temperature, high pressure, low permeability complex fault block oil field. Due to its deep buried oil reservoirs, poor reservoir properties, large differences between layers, high oil and gas ratio and large salt content, the development of the field poses a serious problem. In the absence of similar oilfields, through the development practice of 11a, a set of successful experiences for the development of complex fault-broken oil fields in Wendong has been explored. It is difficult to recover the original formation pressure by applying high-pressure water injection to the oilfield and pressure recovery of the formation, which is difficult to recover to the original formation pressure. After the fracturing reform is implemented in the early stage of oil well production and after water injection is effective, by optimizing well selection and fracturing methods, Good oil-enhancing effect; gas lift oil production effectively overcome the high oil-gas ratio and salt, wax and well depth, poor well conditions, lift the liquid effect is good; layer by layer return experiment to improve the oil production rate and water drive, Improve the development effect, and provide reference for solving the problems of interlayer interference and plane efficiency.