分注井层段压力测试技术与应用  

Testing Techniques of Reservoir Pressure of Layered Waterflood Wells and Their Applications.

作　　者：杨永超[1] 陈传东[1] 苗大军[1] 李俊儒[1] 

机构地区：[1]中原油田采油二厂

出　　处：《测井技术》2002年第5期409-413,共5页Well Logging Technology

摘　　要：油藏由于地层渗透率的不同 ,注入水在纵向不能均匀注入油层。开发中在注水井上采取了分层注水 ,仅根据压力资料不易确定整个系统的平均渗透率、井壁阻力系数和油藏压力。为此 ,从测试工艺和解释方法上研究形成了一种新型的分注井层段压力测试技术。分注井层段压力测试技术是利用油田分层注水的分层管柱 ,研究开发了适应偏心注水管柱直接测试分层压力的小型存储压力计及相应的配套测试仪器和工具。研究出一次试井过程中 ,应用同时测得多层不稳定压力资料来确定各注水层段地层参数的方法。通过 5口井 11层次的现场试验研究 ,一次测试成功率 85 % ,平均测试成功率 90 % ,测试结果可信度 90 %以上。证明了其工艺的可行性 ,为油田分注井测取层段压力提供了一项行之有效的工艺测试方法 。Because the stratum permeability of reservoir is different, injected water can′t evenly flow into the reservoirs. We use layered waterflood in injecting wells. Moreover, we couldn′t make sure the average permeability, wellbore resistance coefficient and reservoir pressure only from the pressure data. So based on the testing technique and interpretation procedures, we worked out a new method--well pressure testing technique for layered reservoirs waterflood--it is that we made a minitype of storage pressure gauge and relevant testing instrument and tools for direct testing layered reservoirs pressure to fit the eccentric waterflood column. Wegot the stratum parameters of each reservoir waterflood using the multilayer astable pressure data at the same time during one testing. By testing 11 layers of 5 wells, once-testing success ratio is 85 per cent, average ratio 90 per cent and testing reliability over 90 per cent. These prove that the technique is feasible and effective in getting the reservoir pressures of layered waterflood, and supplies a reliable evidence for adjustments of layered waterflood wells.

关 键 词：分注井 层段压力测试技术 应用 油田 渗透率 注水井 储层压力 测试 地层参数 

分 类 号：TE357.8[石油与天然气工程—油气田开发工程]