Abstract: During the middle and later oilfield development periods, the main purpose of EOR is to look for the potential layers and remaining oil in the thick layers, improving oilfield development. Currently, a number of problems exist in the domestic dynamic monitoring and pressure testing of oil producing wells and application of remaining oil saturation logging method for the high water-cut period, such as low precision of measurement on water-cut rate as well as high cost for testing of a single layer. Both Chinese and foreign remaining oil saturation logging methods cannot acquire the liquid properties and pressure of a single layer. BH-WFT wireline layering test system is developed to solve this bottleneck in monitoring of development wells. The wireline transmission method is adopted to send the two-packer downhole instrument to the target layer. The formation pressure, fluid temperature, water-cut rate and fluidic sample of producing pay are acquired to test a single layer by means of natural gamma correction, single-layer packing, pump discharging liquid and real-time monitoring technology. The dynamic detailed data of producing pay are quickly provided so that the plan for next stage can be adjusted on a scientific, reasonable and reliable basis.

摘要： 油田开发中后期, 提高采收率的主要目标是寻找潜力层及挖潜厚油层内的剩余油, 提高油田开发程度。 目前, 国内采油井动态监测、压力测试及剩余油饱和度测井方法在高含水期的应用中存在含水率测量精度低、单层压 力监测费用高、难度大等问题, 而国内外剩余油饱和度测井方法无法获得单层液性和压力。为解决以上开发井监测方 法的局限性, 开发出BH-WFT 电缆分层测试系统, 采用电缆传输方式, 将带有双封隔器的井下仪器送入目的层位, 依 据自然伽马校深定位, 利用单层封隔、泵抽排液和实时监控技术, 取得测试单层的地层压力、流体温度、含水率和产 层流体样品, 快速提供产层详实的动态资料, 为制定下一步调整方案提供科学、合理、可靠的依据。

关键词: 分层测压, 取样, 液性, 剩余油, 动态监测, 储层评价