摘要
大港埕海油田受古地理条件及沉积环境、钻井条件等因素制约,储层测井响应特征与含油性存在复杂关系,导致低对比度油藏频繁出现,储层测井响应区分不明显,常规评价方法难以满足开发需求,流体性质判别困难。同时由于井况等原因导致资料缺失,增加了测井评价难度。为解决以上难题,在分析区块地质特征基础上,结合测井、录井、试采资料,分别采用纵向模式判别法、四孔隙度权重分析法以及测录井多学科的多参数融合技术,对测井资料进行深度挖掘,形成一套针对埕海油田深层的流体性质判别方法。该方法针对性地解决了测井评价的瓶颈难题,实现了储层流体性质精确评价,增强了区块适用性,为油田高效建产垫定技术基础。
Chenghai oilfield in Dagang is restricted by paleogeographic conditions,sedimentary environment,drilling conditions and other factors.There is a complex relationship between the logging response characteristics and reservoir oiliness which is mainly manifested in the frequent occurrence of low contrast reservoirs caused by comprehensive factors,the indistinct well logging response of oil and gas layers.The conventional evaluation method is difficult to meet the needs of development,which lead to the difficulty in identifying fluid properties.In addition,the lack of data due to the well condition and other reasons increases the difficulty of log evaluation.In order to solve the above problems,based on the analysis of the geological characteristics of the block,combined with logging and testing data,the vertical mode discriminant method of brine mud,the weight analysis method of four porosity,and multi-parameter fusion technology are used to deeply excavate the logging data.At last,a set of identification methods for the fluid properties of Chenghai oilfield deep stratum is finally formed.This method not only solves the bottleneck problem of well logging evaluation,realizes the accurate evaluation of reservoir fluid properties,but aslo enhances the applicability of the block,lays a solid technical foundation for the efficient construction and production of the oilfield.
作者
刘俊东
李进
窦如胜
王小刚
卓坤
刘竹杰
LIU Jundong;LI Jin;DOU Rusheng;WANG Xiaogang;ZHUO Kun;LIU Zhujie(Tianjin Branch,China National Logging Corporation,Tianjin 300280,China;China National Logging Corporation,Xi’an,Shaanxi 710077,China;The Fourth Oil Production Plant of CNPC Dagang Oilfield(Beach Development Company),Tianjin 300280,China)
出处
《测井技术》
CAS
2021年第6期602-608,共7页
Well Logging Technology
关键词
测井评价
低对比度
模式判别
权重分析
跨学科结合
埕海油田
log evaluation
low contrast
mode discrimination
weight analysis
interdisciplinary combination
Chenghai oilfield
作者简介
第一作者:刘俊东,男,1974年生,高级工程师,硕士,从事测井资料解释评价和研究工作。E-mail:ljundong@cnpc.com.cn;通信作者:李进,女,1987年生,工程师,硕士,从事测井资料解释评价和研究工作。E-mail:lijtj@cnpc.com.cn。
