应用四中子饱和度测井技术指导油井分层采油  

Application of four-neutron saturation logging technology to guide stratified oil production

作　　者：曾磊 陈金科 边松伟 米立和 罗保军 高鸿泉 ZENG Lei;CHEN Jinke;BIAN Songwei;MI Lihe;LUO Baojun;GAO Hongquan(Well Testing Company,CNPC Bohai Drilling Engineering Company Limited,Langfang,Hebei 065000,China;Downhole Services Company,CNPC Bohai Drilling Engineering Co.,Ltd.,Renqiu,Hebei 062500,China;The Fourth Exploit Factory of PetroChina Huabei Oilfield Company,Langfang,Hebei 065007,China)

机构地区：[1]中国石油集团渤海钻探工程有限公司油气井测试分公司,河北廊坊065000 [2]中国石油渤海钻探工程有限公司井下作业分公司,河北任丘062500 [3]中国石油华北油田分公司采油四厂,河北廊坊065007

出　　处：《油气井测试》2023年第5期67-73,共7页Well Testing

摘　　要：针对油井在多层合采情况下,采用其他方法和资料不易确定剩余油的分布情况,利用四中子饱和度测井资料的解释资料分析各产层的物性、含油性,确定生产潜力层段。四中子饱和度测井用镅铍中子源向地层发射快中子,快中子与地层中的元素发生一系列反应,通过长短源距四个探测器记录中子-中子、中子-伽马双物理过程得到中子-中子、中子-伽马共四个计数率,进而计算地层的泥质含量、孔隙度、含油气饱和度,评价套后地层物性特征及剩余油分布状况。C区块的A井在多层合采时的含水率很高,利用四中子饱和度测井资料解释结果分析产层的物性和含油性,指导分层采油,制定合理的分采方案,关闭高含水层段、生产低含水层段,取得了较好的应用效果,可为油气田开发方案的制定或调整提供可靠依据。In view of the difficulty in determining the distribution of remaining oil by other methods and data in multi-layer combined production of oil Wells,the interpretation data of four-neutron saturation logging is used to analyze the physical properties and oil content of each production layer and determine the production potential interval.Americium beryllium neutron source is used in fourneutron saturation logging to emit fast neutrons to the formation,which react with the elements in the formation in a series of ways.The neutron-neutron and neutron-gamma dual physical processes are recorded by four detectors with short and short source spacing to obtain four counting rates of neutron-neutron and neutron-gamma,and then the shale content,porosity and oil-gas saturation of the formation are calculated.Evaluate the physical properties of the formation and the distribution of remaining oil.Well A in Block C has a high water content in multi-layer combined production.The interpretation results of four-neutron saturation logging data are used to analyze the physical properties and oil content of the production layer,guide the stratified oil production,formulate a reasonable production plan,close the high aquifer section and produce the low aquifer section.Good application results have been obtained,which can provide a reliable basis for the formulation or adjustment of the oil and gas field development plan.

关 键 词：四中子 饱和度测井 中子-中子 中子-伽马 双物理过程 套后 剩余油 分层采油 

分 类 号：TE357[石油与天然气工程—油气田开发工程]