柴达木盆地一里坪地区新近系盆地模拟及有利区预测

doi:10.12108/yxyqc.20210307

岩性油气藏 ›› 2021, Vol. 33 ›› Issue (3): 74–84.doi: 10.12108/yxyqc.20210307

柴达木盆地一里坪地区新近系盆地模拟及有利区预测

冯德浩^1,2, 刘成林^1,2, 田继先³, 太万雪^1,2, 李培^1,2, 曾旭³, 卢振东^1,2, 郭轩豪⁴

1. 中国石油大学 (北京)油气资源与探测国家重点实验室, 北京 102249;
2. 中国石油大学 (北京)地球科学学院, 北京 102249;
3. 中国石油勘探开发研究院, 河北廊坊 065007;
4. 西安石油大学地球科学与工程学院, 西安 710065

收稿日期:2020-06-18 修回日期:2020-09-10 发布日期:2021-06-03
第一作者:冯德浩（1997—），男，中国石油大学（北京）在读硕士研究生，研究方向为油气成藏与油气资源评价。地址：（102249）北京市昌平区府学路18号。Email：apparate_z@126.com
通信作者: 刘成林(1970-),男,博士,教授,主要从事油气地球化学与资源评价、非常规油气地质方面的研究工作。Email:liucl@cup.edu.cn。
基金资助:
国家自然科学基金面上项目“咸化湖盆条件下盐类对地层超压的作用机制研究”（编号：41872127）和中国石油天然气股份有限公司重大科技专项“柴达木盆地建设高原大油气田勘探开发关键技术研究与应用”（编号：2016E-0102）联合资助

Basin modeling and favorable play prediction of Neogene in Yiliping area, Qaidam Basin

FENG Dehao^1,2, LIU Chenglin^1,2, TIAN Jixian³, TAI Wanxue^1,2, LI Pei^1,2, ZENG Xu³, LU Zhendong^1,2, GUO Xuanhao⁴

1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
3. PetroChina Research Institute of Petroleum Exploration and Development, Langfang 065007, Hebei, China;
4. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China

Received:2020-06-18 Revised:2020-09-10 Published:2021-06-03

摘要/Abstract

摘要： 柴达木盆地一里坪地区新近系天然气资源潜力较大。为了评价一里坪地区天然气资源潜力和风险勘探选区，开展了盆地与含气系统模拟研究，明确了其烃源岩热演化史、主要生气凹陷以及有利运聚方向。结果表明：①一里坪地区新近系烃源岩有机质丰度（TOC质量分数为0.2%~1.0%）与柴西地区相当，具备较好的生烃潜力，有机质类型为Ⅱ₂-Ⅲ型，以生气为主。②研究区下油砂山组（N₂¹）和上油砂山组（N₂²）烃源岩开始大量生烃的关键时期分别为中新世末期和上新世末期，狮子沟组（N₂³）烃源岩至今处于未成熟-低成熟阶段。③研究区主力气源岩为下油砂山组（N₂¹）烃源岩，主要生气时期为七个泉组（Q₁₊₂）沉积时期；2个主要生气中心分别为碱石山-红三旱四号构造北部和船形丘东北部-台南。④红三旱三号-红三旱四号构造、鄂博梁Ⅲ号-鸭湖-台吉乃尔构造和台南-涩北构造均为天然气聚集的有利区。该研究成果为一里坪地区新近系天然气勘探指明了方向。

关键词: 烃源岩, 生烃动力学, 含气系统, 盆地模拟, 新近系, 一里坪地区, 柴达木盆地

Abstract: There are great potential of Neogene natural gas resources in Yiliping area，Qaidam Basin. In order to evaluate the natural gas resource potential and risk exploration area in Yiliping area，the basin and gas-bearing system modeling was carried out，and the thermal evolution history of source rocks，main gas generation center and favorable migration and accumulation directions were determined. The results show that：（1）The abundance of organic matter（TOC mass fraction is 0.2% -1.0%）of Neogene source rocks in Yiliping area is similar to that in western Qaidam Basin，which has good hydrocarbon generation potential，and the organic matter is type Ⅱ₂-Ⅲ.（2）The key periods for the beginning of generating a great deal of hydrocarbons in the source rocks of lower Youshashan Formation（N₂¹）and upper Youshashan Formation（N₂²）are the late Miocene and the late Pliocene， respectively，and the source rocks of Shizigou Formation（N₂³）are still immature to low mature.（3）The major source rock in Yiliping area is lower Youshashan Formation（N₂¹），and the main gas generation period is Qigequan Formation（Q₁₊₂）. The two main gas generation centers are Jianshishan-Hongsanhan No.4 structure belt and northeastern Chuanxingqiu-Tainan structure belt.（4）Hongsanhan No. 3-Hongsanhan No.4 structural belt， Eboliang No. 3-Yahu-Teginaer structural belt and Tainan-Sebei structural belt are favorable areas for natural gas accumulation. The research results indicate the direction for Neogene gas exploration in Yiliping area.

Key words: source rock, hydrocarbon generation kinetics, gas-bearing system, basin modeling, Neogene, Yiliping area, Qaidam Basin

中图分类号:

TE122.1

冯德浩, 刘成林, 田继先, 太万雪, 李培, 曾旭, 卢振东, 郭轩豪. 柴达木盆地一里坪地区新近系盆地模拟及有利区预测[J]. 岩性油气藏, 2021, 33(3): 74–84.

FENG Dehao, LIU Chenglin, TIAN Jixian, TAI Wanxue, LI Pei, ZENG Xu, LU Zhendong, GUO Xuanhao. Basin modeling and favorable play prediction of Neogene in Yiliping area, Qaidam Basin[J]. Lithologic Reservoirs, 2021, 33(3): 74–84.

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柴达木盆地一里坪地区新近系盆地模拟及有利区预测

Basin modeling and favorable play prediction of Neogene in Yiliping area, Qaidam Basin

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