气测录井资料环境影响因素分析及校正方法

Environment-affecting factors and correction method for gas logging data

通过开展不同钻井液条件下的气体检测实验、井口逸散气校正实验,建立了不同钻井液体系条件下的气测全烃检测对比关系,确定了钻井液粘度变化对气体检测影响校正系数;建立了井口和泥浆槽钻井液全脱分析数据之间的关系,同时建立了它们与随钻检测全烃值之间的关系;建立了气测资料综合校正方法,为气水层评价提供了更准确的评价参数。

Through gas examination experiment and well head effused gas correction experiment, this paper constructs a correlation relation of gas logging whole hydrocarbon examination in different drilling fluid systems and determines the correction factor of the influence of drilling fluid viscosity change on gas examination. It constructs a relation between the analyzed data of well head and mud ditch drilling fluid, and relation between them and whole hydrocarbon value examination while drilling. It establishes a comprehensive correction method of gas logging, providing more accurate evaluation parameters for gas and water zones evaluation.