沾化凹陷R_o分布规律及影响有机质成熟度的因素  

DISTRIBUTION CHARACTERISTS OF R_o AND FACTORS INFLUENCING THE ORGANIC MATURITY IN THE ZHANHUA DEPRESSION

作　　者：李胜利[1] 于兴河[1] 陈建阳[1] 黎运秀[2] 王永诗[3] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]大港油田研究院,天津大港300280 [3]胜利油田地质科学研究院,山东东营257015

出　　处：《地质力学学报》2005年第1期90-96,共7页Journal of Geomechanics

摘　　要：结合实际资料,综合确定Ro=0 4%为该区生烃门限(含低熟油),相应的深度门限平均为2250m左右,温度门限平均在90℃左右。造成Ro值相对较低的相关因素如下:有机质成分、温度、压力、埋深等。通过比较,沾化凹陷中渤南洼陷和孤北洼陷生烃能力强,而富林洼陷生烃能力相对较弱。According to an analysis of the data of temperatures and R_o in the Zhanhua depression of the Shengli oilfield, the R_o=04% is determined to be the R_o threshold of hydrocarbon (including immature or low-maturity oil/gas) generation in the area, and the depth threshold and temperature threshold corresponding to the new R_o average ～90℃ and ～2250 m respectively. The related factors responsible for the relatively low R_o value are organic components, temperature, fluid pressure and burial depth. By comparison, the Bonan and Gubei sub-depressions of the Zhanhua depression have a high hydrocarbon generating potential, while the potential of hydrocarbon generation of the Fulin sub-depression is relatively low.

关 键 词：沾化凹陷 有机质成熟度 分布规律 生烃能力 生烃门限 孤北洼陷 渤南洼陷 富林洼陷 低熟油 平均 温度 埋深 

分 类 号：P618.130.2[天文地球—矿床学] P618.130.1[天文地球—地质学]