东濮凹陷濮城地区沙一段原油地球化学特征及油源对比  

GEOCHEMICAL FEATURE AND OIL SOURCE CORRELATION OF SHA 1 MEMBER IN PUCHENG DONGPU SAG

作　　者：潘泉涌[1] 陈义才[1] 沈忠民[1] 罗小平[1] 常振恒[2] 胡玉杰[2] 

机构地区：[1]成都理工大学,成都610059 [2]中原油田分公司研究院,濮阳457000

出　　处：《物探化探计算技术》2008年第1期48-51,91,共4页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：东濮凹陷濮城地区发育了沙河街组沙三～沙四上段、沙一段二套烃源岩,其中沙三段烃源岩成熟度较高,沙一段烃源岩为低成熟度。沙一段原油其饱和烃含量在47.39%～65.33%,有较强的植烷优势,微弱的偶碳优势,饱和烃同位素在-28.0‰左右。原油甾烷和萜烷成熟指标表现为低熟原油特征,但其生源特征与沙三～沙四段烃源岩存在着相似性。经综合分析认为,濮城地区沙一段原油总体上是由沙一段泥岩与沙三段泥岩早期生成的原油混合而成的,局部有沙一段泥岩单独提供的油源。Two series of hydrocarbon source rocks including sha3 member and sha1 member in shahejie formation are developed in Pucheng Dongpu sag.Sha3 member is a mature hydrocarbon source rock;while sha1 member oil is low mature one,in which saturated hydrocarbon between with 47.39%～65.33% and the δ 13 C value of the whole oil is-28.0‰.Although mature index of terpane and sterane of the crude oil shows a low value,its characteristics of the source rocks is analogy with Sha3-Sha4.The crude oil of sha1 being in the mass mix oil comes from sha1 member source rock and sha3 member source rock,and part of the crude oil comes from singleness sha1 member source rock.

关 键 词：东濮凹陷 沙一段 烃源岩 未成熟油 油源对比 

分 类 号：TE122.114[石油与天然气工程—油气勘探]