摘要
库车坳陷克深地区白垩系巴什基奇克组为致密砂岩干气藏,气测组分一般为C1-C3,极少出至C4,导致部分派生参数无效,传统图板流体性质识别效果不佳。为此,以试气段录井资料为基础,通过方差分析筛选出烃相系数、烃特征、烃组分递减系数、相对钻时、全烃及湿度比等8个对气水层识别有效的录井敏感参数,再以这8项敏感参数构建气测形态法及Fisher准则法气测解释模型,并确定解释标准。新图板回判符合率在88.8%以上,尤其对气水层区分效果明显。经TB 401、AW 5、KS 1102、KS 1103共4口新井应用验证,新图板评价结论与试气结果总体符合率78.6%,应用效果显著。
The Cretaceous Bashijiqike formation in Keshen area of Kuqa depression is a tight sandstone dry gas reservoir,and the gas logging components are generally C1-C3,rarely come out to C4,resulting in the invalidity of some derived parameters.The effect of identifying fluid properties in current traditional charts is not good.Therefore,based on mud logging data of gas test section,eight effective mud logging sensitive parameters,such as hydrocarbon phase coefficient,hydrocarbon characteristics,hydrocarbon component decline factor,relative drilling time,total hydrocarbon and humidity ratio,were screened out through variance analysis.Based on these eight sensitive parameters,the gas logging interpretation models of gas logging morphology method and Fisher criterion method are constructed,and the interpretation criteria are determined.The coincidence rate of the new chart return analysis is more than 88.8%,especially for the distinction between gas and water layers.The application of 4 new wells in TB 401,AW 5,KS 1102 and KS 1103 shows that the overall coincidence rate between the evaluation conclusion of the new chart and the gas test results is 78.6%,and the application effect is remarkable.
作者
张骏
薛晓军
李建成
王洪亮
王国瓦
魏拓
刘媛
Zhang Jun;Xue Xiaojun;Li Jiancheng;Wang Hongliang;Wang Guowa;Wei Tuo;Liu Yuan(不详;Nanxin Road,Kelamayi City,Xinjiang,834000,China)
出处
《录井工程》
2019年第4期91-95,149,共6页
Mud Logging Engineering
关键词
克深地区
气测形态法
Fisher准则法
烃相系数
敏感参数
气水层
Keshen area
gas logging morphology method
Fisher criterion method
hydrocarbon phase coefficient
sensitive parameter
gas-water layer
