泵抽式电缆地层测试储层产能预测方法研究  

Research on reservoir productivity evaluation method in pump-out wireline formation test

作　　者：尹邦堂[1] 李相方[2] 孟悦新[3] 杜辉[2] 付小娣[2] 

机构地区：[1]中国石油大学(北京)机械工程学院,北京102249 [2]中国石油大学(北京)石油工程学院,北京102249 [3]中海油田服务股份有限公司,河北廊坊065201

出　　处：《断块油气田》2011年第5期611-615,共5页Fault-Block Oil & Gas Field

基　　金：国家高技术研究发展计划(863)项目"油气层钻井中途测试仪工程化集成与应用"(2006AA090101);国家自然科学基金项目"凝析气藏相变渗流机理及其试井方法研究"(50974128)

摘　　要：目前泵抽式电缆地层测试已逐渐替代钻杆地层测试(DST)来完成流体取样和储层产能评价等任务,并取得了巨大的经济效益。随着国产大排量泵抽式电缆地层测试器(ERCT)的研制成功,如何充分发挥其泵抽能力强、取样功能完备和测试取样信息丰富的优势来精确评价油气储层的产能已成为当务之急。现有电缆地层测试(WFT)产能预测方法还无法达到中途测试(DST)产能预测精度,且存在较大误差。文中首先对泵抽式电缆地层测试产能预测影响因素进行了分析,然后对影响因素的计算方法进行了研究,其中主要影响因素渗透率使用取样渗透率校正预测试渗透率,并对测井渗透率逐点刻度,最后建立了直接计算各小层产量的数值积分单相、两相储层产能评价模型,在中海油服某海上油田的电缆地层测试及产能评价中进行了应用,取得了良好的效果。At present, drill-stem test（DST） is partly replaced by pum-pout wireline formation test in fluid sampling and reservoir productivity evaluation, getting huge economic benefits. With the successful development of the ERCT wireline tester in China, it is important to make advantage of its large volume pumping capability, continuous testing property, complete sampling function and various fluid identifaction methods to evaluate reservoir more precisely with the testing data and sampling information. Deliverability forecasting precision of existing wireline formation testing （WFT） fails to agree with that of drill-stem test, having considerable error. In this paper, firstly, the influence factors of the reservoir productivity evaluation in pump-out wireline formation test are analyzed; Secondly, the calculating methods of the influence factors are researched. The permeability is calculated by using the sampling permeability to calibrate the pretest permeability; Finally, the numerical productivity evaluation method is established and the productivity of thin bed is calculated. This research is applied in an offshore field of wireline formation test by COSL and a good effect has been obtained.

关 键 词：电缆地层测试 模型建立 产能预测 渗透率刻度 

分 类 号：TE27[石油与天然气工程—油气井工程]