千米桥潜山老井潜力分析

Analysis of Old Wells Potential of Qianmiqiao Buried Hill

千米桥潜山凝析气藏是大港油田近年来发现的规模较大的中等含量的高饱和凝析气藏,含油气层为奥陶系峰峰组和上马家沟组,截止目前,对千米桥潜山凝析气藏进行了近10a的勘探与开发,共完钻了13口井,每口井均见到了油气显示,但试油仅8口井获得工业油气流,占完钻井的61%,只有6口井投产,高效生产井仅3口,占完钻井的23%,反映出千米桥潜山地质因素极其复杂。依据各井的钻井、完井、测井、录井、试油、试采资料,结合井区的构造、储层等信息,分析了潜山单井已动用的老层段、未射开的层段和井区潜力大小,旨在为下步潜山开发评价和潜力挖掘提供了依据。

The condensate gas reservoir of the Qianmiqiao buried hill, Dagang Oilfield, is a relatively big and highly saturated condensate gas reservoir. The condensate bearing formation is Fengfeng formation and Majiagou formation of Ordovician. Up-to-date, after nearly ten years exploration and development, 13 wells have been drilled and completed. All wells have gas and oil shows. But only 8 wells have industrial flow, accounting for 61% of the completed wells and there are only 6 wells going into production. There are only 3 highly efficient producing wells, which accounting for 23% of the completed wells. This reflects the complexity of the hidden mountain geology. Developed intervals of single wells, un-perforated intervals and the potential of the wells are analyzed based on the data of drilling, completion, electric logging, mud logging, oil testing and well testing. This provides the basis for the further development appraisal and potential development of the buried hill reservoir.