中子测井在苏里格气田苏东41-X区块马五5段碳酸盐岩储层测井评价中的应用  

The application of acoustic logging in the logging evaluation of carbonate reservoirs in sudong 41-x block of sulige gas field

作　　者：兰义飞[1] 陈志华[2] 石林辉 刘莉莉[2] Chen zhihua;shilinhui;liulili;caoyan

机构地区：[1]中国石油长庆油田分公司气田开发处 [2]中国石油长庆油田分公司勘探开发研究院

出　　处：《国外测井技术》2021年第5期42-46,2,共6页World Well Logging Technology

基　　金：中石油股份公司重大科技专项项目:“低渗透低丰度砂岩气藏水平井布井和改造工艺技术研究”(2011ZX05015—001)资助。

摘　　要：中子测井采用的是灰岩刻度,灰岩CNL值为0,水是100。通常情况下,泥岩束缚水含量比较高,所以补偿中子测井值为高值,通常都大于30%。砂岩孔隙度高,补偿中子也较高,砂岩孔隙度越低,补偿中子也越低。补偿中子测井对油层的反应不是很明显,但对于气层,由于挖掘效应的存在,补偿中子值会比实际孔隙度低,地层含气量越大,补偿中子值越低。商业气流的补偿中子值一般都小于12%,有时低到3%或更低。苏里格气田是目前中国陆上最大整装天然气田,天然气总资源量3.8万亿立方米,但是苏里格气田地表、地质情况复杂,储气层厚薄不一,大部分气藏储存在碳酸盐岩里,气田开发十分困难,本文结合工作实际,论述了苏里格气田苏东41-X区块碳酸盐岩储层特征及中子测井曲线在该地层的响应规律以及如何准确的评价应用。Neutron log scale is limestone,limestone CNL value is 0,the water is normally 100,mudstone bound water content is higher,so compensated neutron logging value is high value,usually more than 30%of sandstone porosity is high,the compensated neutron is higher,the lower sandstone porosity,the lower the compensated neutron also compensated neutron log response to the reservoir is not very obvious,but for the atmosphere,due to the existence of the excavation effect,compensated neutron value than the actual low porosity,the stratum air content,the greater the compensated neutron value,the lower the business flow of compensated neutron value is generally less than 12%,sometimes as low as 3%or lower Gas fields in China land is the largest ready natural gas,natural gas resource of 3.8 trillion cubic meters,but gas surface in a complex geological situation,different thickness of gas layers,most of the gas storage in carbonate rock,the gas field development is very difficult,in this paper,combining with working practice,this paper discusses the gas 41-X of the former Soviet bloc in the carbonate reservoir characteristics and the response regularity of neutron logging curve in the formation and how to accurately evaluate application。

关 键 词：碳酸盐岩 储层 测井技术 储层参数 

分 类 号：P61[天文地球—矿床学]