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下二门西缘地区位于泌阳凹陷下二门背斜西部,紧邻生油凹区,油气显示活跃,砂体发育,具备多类型圈闭条件。由于该区断层发育、砂体横向变化快,因此具有对比难度大、井震吻合难度大等问题,造成油藏分布及储量规模难于落实,成藏规律不清。为搞清该区域断层、构造特征和储层展布规律,落实圈闭条件、油层分布和储量规模,从而满足老区增储挖潜需要,开展了下二门西缘滚动勘探开发研究。
The Lower Second West Rim is located in the western part of the Lower Ermen anticline in the Biyang Depression, next to the oil well, with active oil and gas evolution and sand body development with various types of trapping conditions. Due to the fault development in the area, the sand body changes rapidly laterally, which makes it difficult to compare with each other and the difficulty of well-to-rock anastomosis. As a result, the reservoir distribution and reserves are difficult to be implemented and the law of reservoir formation is unclear. In order to find out the fault, tectonic characteristics and distribution law of the reservoirs in this area, and to implement the trapping conditions, reservoir distribution and reserves scale, so as to meet the need of increasing reserves and tapping potential in the old area, the rolling exploration and development research of the lower two reaches is carried out.