混油钻井液条件下气测值的量化校正处理  

Quantitative correction and process for gas logging value under oil-contaminated drilling fluid condition

作　　者：王印[1,2] 杨明清 

机构地区：[1]山东科技大学地质科学与工程学院 [2]胜利油田地质录井公司

出　　处：《录井工程》2009年第1期8-10,共3页Mud Logging Engineering

摘　　要：以往气测录井对混油钻井液气测值的处理,一般只是根据经验作非量化校正处理,没有有效的量化校正方法,尤其是对气测烃类组分值的校正处理基本上没有考虑。针对此情况,分析了储集层甲烷相对含量变化特征和混油钻井液烃类组成与储集层烃类组成不同的特点,以胜利油田M-平1井钻井液混油前后的气体检测分析数据为例,通过分析混油钻井液与未混油情况下地层全烃和烃组分检测值的相互关系,得出了剔除混油干扰后的地层全烃和烃组分的校正计算公式,为混油钻井液条件下利用气测参数准确评价油气层提供了有效保障。The former process for gas logging value in the oil-contaminated fluid gas logging is commonly corrected and processed by non-quantization according to the experience,and there were no effectively quantitative and corrective ways, especially no fundamental consideration was done on the corrective process of hydrocarbon component value in gas logging.In view of the issue,the authors analyzed the changing features of relative methane content in the reservoir and the different characteristics of hydrocarbon composition in contaminated drilling fluid and reservoir.Taking the gas detected and analysis data before and after the drilling fluid being contaminated by oil in M-Ping 1 Well in Shengli Oilfield as the example,by analyzing the inter-relationship of formation total hydrocarbon detecting values under the contaminated and non-contaminated conditions,they got the corrective formula for formation total hydrocarbon and hydrocarbon composition which could eliminate contaminated interference.The method provided effective safeguard for correctly evaluating oil and gas zones by using gas logging parameters under the condition of contaminated drilling fluid.

关 键 词：混油钻井液 气测录井 全烃 烃组分 干扰 校正 公式 

分 类 号：TE254.4[石油与天然气工程—油气井工程] P631.84[天文地球—地质矿产勘探]