泵抽式电缆地层测试渗透率实时解释新方法  

A new real-time formation permeability interpretation method using pumping cable tester

作　　者：杜辉[1] 刘月田[1] 李相方[1] 姜春河[2] 孟悦新[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249 [2]中原油田分公司采油工程技术研究院,河南濮阳457001

出　　处：《西安石油大学学报（自然科学版）》2011年第6期42-46,8,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：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"(编号:50974128);国家重大专项"复杂深井随钻测录;酸性气层测试等技术与装备"(编号:2008ZX05021-005)

摘　　要：在对海上油田进行油气资源评价时,使用泵抽式电缆地层测试能快速获得储层的渗透率,节约大量的测试成本,降低作业风险.从渗流力学的基础理论出发,在充分考虑测试流量非稳定性和地层渗透率非均质性的前提下,建立了非稳态非均质球形流渗透率解释模型,并开发出基于渗透率正演压力原理的试井数值计算方法,能够提高电缆地层测试渗透率解释结果的可靠性和计算精度,同时满足现场在线解释的实时性要求.研究成果在一种新型泵抽式电缆地层测试器(ERCT)的测试资料解释中得到了验证.Due to the low cost and risk,pumping cable formation permeability tester is widely us ed for the evaluation of oil and gas resources in off-shore oilfields.Considering the instability of test flow-rate and the heterogeneity of formation permeability,a spherical unsteady heterogeneous flow permeability interpretation model is derived from the basic principles of fluid mechanics in porous media,and a numerical well testing algorithm based on the permeability forward-modeling pressure principle is put forward to raise the rationality and the precision of the permeability interpretation results and meet the real time interpreting requirement.The approach was successfully used to interpret the test data of a new domestic pumping cable formation permeability tester,and the result shows that the presented method in this paper is effective.

关 键 词：电缆地层测试 非稳态球形流 非均质渗透率模型 压力正演法 

分 类 号：TE353[石油与天然气工程—油气田开发工程]