收稿日期: 2004-07-01
修回日期: 2004-09-06
网络出版日期: 2004-12-20
THE GEOCHEMISTRY CHARACTERISTICS OF SOURCE ROCK IN WELL CHAICAN 1 CE 1 IN CHAIWOPU SAG
Received date: 2004-07-01
Revised date: 2004-09-06
Online published: 2004-12-20
准噶尔盆地柴窝堡凹陷柴参1侧1井的勘探目的层为上二叠统红雁池组(P2h)和芦草沟组(P2l)。P2h源岩有机质丰度低,除个别样品外,绝大多数样品的TOC值小于0.4%,有机质类型以 型为主,RO值为1.58%左右,表明有机质已进入高成熟演化阶段。P2l源岩有机质丰度相对更低,所有样品的TOC值均小于0.4%,有机质类型与P2h相似(大多为 型),RO值为1.67%左右(比P2h还高)。资料表明P2h和P2l源岩有机质已进入高成熟演化阶段,具有很小的生油潜力,最多只能生成少量凝析油和湿气,并且有机质已经生成并排出大量油气的可能性很小,评价其为差―非烃源岩。
郭建军,朱忠云, 李广才, 陈践发, 陈仲宇 . 柴窝堡凹陷柴参1侧1井烃源岩的地球化学特征[J]. 天然气地球科学, 2004 , 15(6) : 652 -654 . DOI: 10.11764/j.issn.1672-1926.2004.06.652
The Hongyanchi formation and Lucaogou formation of Upper Permian are main prospecting target of Well Chaican 1 Ce 1 in Chaiwopu Sag. The formation of Hongyanchi has a low abundance of organic matter with a TOC content almost less than 0.4%, for most samples, the main type of organic matter belongs to type Ⅲ and less are belongs to type Ⅱ, and the vitrinite reflectance amount to about 1.58%, which shows organic matter has evolved to higher stage of maturity. The formation of Lucaogou has a lower abundance of organic matter with a TOC content less than 0.4%, the type of organic matter mainly belongs to type Ⅲ and much less are belongs to type Ⅱ, the vitrinite reflectance amount to about 1.67%, which shows organic matter has evolved to higher stage of maturity, too. As a result, all the organic matter has passed the principal stage of oil formation, and can only produce very limited amount of condensate and wet gas at most.
Key words: Chaiwopu; Well Chaican 1 Ce 1; Source rock; Geochemistry characteristics.
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