柴达木盆地西部南区绿参1井暗色泥岩生烃条件研究  

Study on hydrocarbon generation conditions of the dark mudstone in Well Lvcan 1 in southwest Qaidam Basin

作　　者：刘玉华 王祥[2] 张敏[3] 彭德华[4] 

机构地区：[1]中石化东北油气分公司,吉林长春130000 [2]中国石油大学,北京102249 [3]长江大学,湖北荆州434023 [4]中油青海油田分公司,甘肃敦煌736202

出　　处：《特种油气藏》2010年第4期50-52,共3页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金项目"塔里木盆地寒武系-奥陶系优质烃源岩芳烃分子碳氢同位素地球化学特征及原油对比"(40573030)

摘　　要：定量评价盆地烃源岩生烃潜能力是油气勘探中首先要解决的问题。以柴达木盆地西部南区绿参1井所钻遇的暗色泥岩为研究对象,采用有机质丰度、类型和成熟度指标定量或定性刻画了暗色泥岩的生烃潜力特征。研究认为,绿参1井烃源岩纵向上各层段有机质丰度随深度的增加而增加,下油砂山组至上干柴沟组烃源岩为差-非烃源岩,下干柴沟组为中等-好烃源岩;有机质类型为Ⅱ1型和Ⅱ2型,下干柴沟组上段、下段均为成熟烃源岩,生烃条件较好;下干柴沟组暗色泥岩生烃条件最佳,生烃潜力很大。Quantitative evaluation of hydrocarbon generation potential of a source rock is the key problem that should be solved first in oil and gas exploration.The dark mudstone encountered in Well Lvcan 1 in the southwest of Qaidam Basin is quantitatively or qualitatively studied for hydrocarbon generation potential by using organic matter abundance,type and maturity.The result indicates that the abundance of organic matters vertically increases with depth.The source rock from the lower Youshashan formation to the upper Ganchaigou formation is poor-non source rock,and in the lower Ganchaigou formation is medium-good source rock.The types of organic matters are Type Ⅱ 1 and Ⅱ2.The upper and lower members of the lower Ganchaigou formation have mature source rock and good hydrocarbon generation conditions.The dark mudstone in the lower Ganchaigou formation has the best hydrocarbon generation potential.

关 键 词：绿参1井 下干柴沟组 有机质丰度 有机质类型 有机质成熟度 生烃潜力 柴达木盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]