-
摘要: 烃源岩的成熟度决定了原油的成熟度与类型。利用R0、C2920S/20S+20R与C29ββ/ββ+αα确定了柴西地区烃源岩的成熟度;通过原油C2920S/20S+20R、C29ββ/ββ+αα与折算镜质体反射率Rc确定了原油的成熟度。研究表明,柴西地区古、新近系原油系低熟—成熟油为主,早期形成的低熟油运移至茫崖坳陷及周缘的深层构造,受后期构造运动影响部分低熟油运移到浅层构造,晚期形成的成熟油主要聚集于茫崖凹陷周缘深层,因此,原生低熟—成熟油藏的勘探应围绕茫崖凹陷及尕斯断陷深层构造及小梁山凹陷周缘浅层构造。Abstract: Maturity and types of crude oil depend on maturity of source rock. It is adopted R0, C2920S/20S+20R and C29ββ/ββ+αα define the maturity of source rock, and C2920S/20S+20R, C29ββ/ββ+αα as well as vitrinite reflectance of crude oil reduction (RC) to define maturity of crude oil in west Qaidam basin. In the light of studies there are two types of crude oil for lowmaturity and maturity in west Qaidam basin, original lowmaturity crude oil migrate to deep structural trap of Mangya depression and its margin, part of lowmaturity crude oil remove to shallow structural trap because of affection of late movement, late maturity crude oil accumulates in the deep structural trap. Therefore, exploration of primary reservoir of lowmaturity and maturity crude oil, in the west Qaidam basin, should surround
deep structural trap of Mangya and Gasi sag, and shallow structural trap of Xiaolianshan sag and its margin.-
Key words:
- oilsource /
- geochemical parameters /
- maturity /
- exploration strategy Qaidam basin /
-

计量
- 文章访问数: 1889
- HTML全文浏览量: 3
- PDF下载量: 738
- 被引次数: 0