论文部分内容阅读
切六区E1+2储层物性横向差异大,连片分布的砂体在不同部位物性、含油性不同,为一构造背景上的岩性油藏。油水关系分布受断层、砂体形态、物性、岩性等多重因素控制,边界类型多。构造东、北、南以物性边界为主,东南以试油含油水层井为边界,西部以断层为边界,无统一油水界面。采用天然能量方式开发产量递减快,采油速度低、采出程度低,开采效果差。为改善储层渗透率,提高单井产量,对油藏的部分油井进行压裂改造,取得了较好的增油效果和经济效益。
The physical properties of the E1 + 2 reservoirs in the six districts are quite different. The contiguous sand body has different physical properties and oil-bearing properties in different parts and is a lithologic oil reservoir with a structural background. The distribution of oil-water relations is controlled by multiple factors such as faults, sand body morphology, physical properties and lithology, with many boundary types. The east, north and south are mainly composed of physical boundaries. The wells in the southeast are well-bound by the oil-bearing aquifer and the west is fault-boundary. There is no uniform interface between oil and water. The natural energy way to develop output declines faster, low oil recovery, low recovery, poor mining results. In order to improve reservoir permeability and improve single-well production, fracturing and rebuilding some oil wells in the reservoir have achieved good oil-enhancing and economic benefits.