利用测井资料评价温吉桑地区烃源岩  

Evaluating Shuixigou Group Hydrocarbon Source Rock in Wenjisang Region with Logging Data

作　　者：姚亚彬 王长江 缪定云 霍勇 

机构地区：[1]中国石油集团测井有限公司

出　　处：《石油工业计算机应用》2017年第2期34-36,共3页Computer Applications Of Petroleum

摘　　要：温吉桑地区位于丘东洼陷的南部缓坡上，其水西沟群（J1+2sh）发育一套由厚层块状砂岩和与黑色或深灰色泥岩、黑色碳质泥岩和厚层煤层互层的煤系沉积。本文利用常规测井曲线与烃源岩的有机碳含量（TOC）建立关系，对温吉桑地区烃源岩TOC进行重新计算，得出纵向上连续的、平面上可对比的TOC剖面。该区J2x1+2TOC相对最高，烃源岩品质相对最高，烃源岩厚度相对最厚，烃源岩最发育；J1b次之；J1s最差。该区靠近丘东洼陷中心，TOC越高，烃源岩越发育。该区J1s源储叠置，形成自生自储型致密岩性气藏，TOC越高，源岩越发育，油气越富集，相对产能也越高。Wenjisang region is located in the southern gentle slope of Qiudong sub-sag in which Shuixigou group consists thick-bedded massive sandstones and coal system deposits—alternating layers of dark or gray siltstones, dark carbonaceous mudstones and thick coal seams. The paper found the relationship between conventional logging curves and contents of total organic carbon(TOC)in the source rocks, recalculated TOC in the source rocks of Wenjisang region, established the TOC vertical distribution which is longitudinal continuous and is correlated in this region. TOC of the lower member of Xishanyao formation is the highest, the quality of these source rocks is the best, these source rocks are the most thick, these source rocks are the most developed. The source rocks of Badaowan formation are the seconds, the source rocks of Sangonghe formation are the worst. When the source rocks are closer to the center of Qiudong sub-sag, TOC is higher. The source rocks and reservoirs of Sangonghe formation in these region are vertically superposed, form the self generated and self contained compacted lithologic gas reservoir. When TOC of the source rocks is higher, the source rocks are more developed, the hydrocarbon is more enriched, the hydrocarbon productivity is higher.

关 键 词：TOC 测井 烃源岩 温吉桑地区 

分 类 号：P618.130.2[天文地球—矿床学]