红河油田水平井储集层裂缝录井识别技术研究  

Mud logging recognition technology for reservoir fractures in horizontal wells of Red River Oilfield

作　　者：何新兵 董京智 邱田民 王邦 赵兰 

机构地区：[1]中石化华北石油工程有限公司录井分公司 [2]中石化华北分公司工程监督中心

出　　处：《录井工程》2014年第4期15-21,100-101,共7页Mud Logging Engineering

基　　金：中石化华北分公司科研项目"红河油田利用测录井资料优化选层方案研究"(编号1301496953)

摘　　要：储集层的裂缝识别技术研究前人已做了大量工作,但综合利用随钻录井参数来识别水平井储集层裂缝的技术目前属于空白,该文通过分析研究区已钻井水平段各录井参数在裂缝发育带对应的变化规律,认为随钻气测全烃、槽面显示、钻井液高频核磁、出口电导率四项参数的变化与裂缝发育带具有较明显的相关性,溢流、井漏、录井槽面出现气泡及上涨,随钻气测全烃尖峰式上涨、周期性重复,原油可动性及标准含油质量浓度异常高值,钻井液出口电导率相对上升或下降的幅度等均为钻遇裂缝发育带的证据。考虑到单项参数都会不同程度的受到工程因素的影响,引入立管压力、钻井液密度等工程录井参数进行归一化处理,由此得到的加权系数可用来整体判别水平段裂缝发育程度,该系数的值越大代表储集层裂缝发育程度越好。The previous work has been done for the research on reservoir fracture recognition technology,but the technique of utilizing mud logging parameters while drilling to identify the reservoir fractures in horizontal wells doesn′t exist at present.Through analyzing the variation laws of mud logging parameters of horizontal section drilled in the study area which corresponds to the fracture development zone,the authors considered that the changes of four parameters(total hydrocarbon of gas logging while drilling,trough surface show,drilling fluid high frequency NMR and outlet conductivity)had obvious relevance with fracture zone,the evidences for drilling fracture developed zones are overflow,lost circulation,pit surface bubbles and rising,spike type rising in total hydrocarbon of gas logging while drilling,periodically repeated,crude oil mobility and abnormally high values of oil movability and the standard oil mass fraction,and the relative magnitude of rise or decrease in outlet conductivity of drilling fluid,etc..Taking into account that the individual parameter is affected by engineering factors in varying degrees,the authors introduced the standpipe pressure,drilling fluid density and other engineering mud logging parameters to normalize,and thus obtaining the weighting coefficients,which can overall determine the fracture development in horizontal section,the larger coefficient value represents the better reservoir fracture development.

关 键 词：裂缝 水平井 气测全烃 槽面显示 出口电导率 

分 类 号：TE142[石油与天然气工程—油气勘探]