深层气井气测录井资料校正处理及其解释评价  

Gas logging data correction and its application in interpretation and evaluation in deep gas wells.

作　　者：柳绿[1] 王研[1] 李爱梅[1] 张波[1] 席长武 

机构地区：[1]大庆钻探工程公司地质录井二公司

出　　处：《录井工程》2008年第3期37-40,共4页Mud Logging Engineering

基　　金：基金项目:吉林石油集团公司;编号:KJY2006007

摘　　要：无论是中浅层还是深层气层的气测录井参数都会受到起下钻、接单根、钻井取心、钻时、钻井液循环流量等因素的影响,而深层气层由于后续地层气以及钻井液性能等方面的原因,其影响更为突出。针对此情况,在深入分析影响气测参数准确性的基础上,阐述了气测背景值校正的必要性,分析了正常钻进和取心钻进两种状态下气测值与钻时、钻井液循环流量以及钻头直径的关系,引入了冲淡系数公式,计算得出两种状态下的校正全烃值和甲烷值;最后通过初步统计分析,建立了适用于吉林探区登娄库组和营城组气层的解释评价标准。实际应用结果表明,其解释符合率高,对于其他地区气测值的校正具有借鉴作用。Gas logging parameters from shallow-middle and deep depths will be influenced by factors of round trip,connec- tion,coring,drilling time,drilling fluid circulation flow rate,while due to causes of successive formation gas and drilling fluid properties,the effects of deep gas are more ob- vious.In view of this situation,on the basis of analyzing the factors that influenced parameters accuracy,the necessi- ty of correcting gas logging background values was expoun- ded,the relations between gas logging values and drilling time,drilling fluid circulation flow rate and bit diameter un- der two states of normal drilling and coring drilling were an- alyzed,the formula of dilution coefficient was drawn into, the corrected values of total hydrocarbon and methane for two states were calculated and obtained.Finally,through preliminary statistical analysis,the interpretation and evalu- ation criteria which are suitable for gas layers of Denglou formation and Yingcheng formation of Jilin exploration area were set up,the real applied results indicate the coincidence rate of these criteria in this area is high,which have the ref- erence function for gas logging values' correction in the oth- er areas.

关 键 词：气测录井 全烃 甲炕 钻井 取心 冲淡系数 校正 评价标准 

分 类 号：TE142[石油与天然气工程—油气勘探] P631.84[天文地球—地质矿产勘探]