油基钻井液钻井气水层识别与评价  

Gas and water zone distinguishing and evaluating in oil- based drilling fluid

作　　者：曹凤俊[1] 王力[1] 

机构地区：[1]大庆油田地质录井分公司

出　　处：《录井工程》2006年第1期25-27,共3页Mud Logging Engineering

摘　　要：采用油基钻井液平衡或欠平衡钻井工艺有利于发现油气层、保护油气层,但同时对油气层识别与评价也会造成一定的困难。通过分析油基钻井液平衡或欠平衡钻井对气测录井造成的影响,深入研究了真假气测异常显示的识别方法,建立了与平衡或欠平衡钻井条件相匹配的气水层的识别方法和解释评价图板。在现场应用中初步见到了较好效果,对勘探开发过程中气水层的录井识别和评价具有一定的指导和借鉴作用。Balanced or under-balanced drilling technology with oil- based drilling fluid is favorable to find and protect oil and gas zone, but meanwhile it will also bring certain difficulties to distinguish and evaluate oil and gas reservoir. By analyzing the affects of balanced or under-balanced drilling with oil-based drilling fluid on gas logging, real and false distinguishing methods for gas logging abnormal display have been studied deeply, gas and water zone distinguishing methods and interpretation and evaluation charts have been established, which are fitted with balanced or under-balanced drilling conditions. The methods and charts are proven by the initial wellsite practical use and have certain guiding and referencing functions to distinguish and evaluate oil and water zones during exploration and development.

关 键 词：平衡钻井 真假异常 环境 因素 甲烷差值 烃灌满系数 解释方法 

分 类 号：TE254.4[石油与天然气工程—油气井工程] P618.130.8[天文地球—矿床学]