石油勘探与开发 >

2018 , Vol. 45 >Issue 5: 749 - 762

DOI: https://doi.org/10.11698/PED.2018.05.01

油气勘探

河套盆地临河坳陷石油地质特征及勘探前景

  • 付锁堂 ,
  • 付金华 ,
  • 喻建 ,
  • 姚泾利 ,
  • 张才利 ,
  • 马占荣 ,
  • 杨亚娟 ,
  • 张艳
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  • 1. 中国石油长庆油田公司,西安 710018;
    2. 低渗透油气田勘探开发国家工程实验室,西安 710018;
    3. 中国石油长庆油田公司勘探事业部,西安 710018;
    4. 中国石油长庆油田公司勘探开发研究院,西安 710018
付锁堂（1962-）,男,甘肃天水人,博士,中国石油天然气股份有限公司长庆油田公司教授级高级工程师,主要从事石油天然气地质综合研究及管理工作。地址：西安市未央区未央路151号,长庆油田综合科研楼,邮政编码：710018。E-mail：fst_cq@petrochina.com.cn

收稿日期: 2018-09-03

  网络出版日期: 2018-09-07

基金资助

中国石油第四次油气资源评价（2013E-0502-07）; 中国石油勘探与生产分公司风险勘探项目（1800128 K1303）; “十三五”长庆探区油气资源评价（135YQZP-2017-KT11）

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Petroleum geological features and exploration prospect of Linhe Depression in Hetao Basin, China

  • FU Suotang ,
  • FU Jinhua ,
  • YU Jian ,
  • YAO Jingli ,
  • ZHANG Caili ,
  • MA Zhanrong ,
  • YANG Yajuan ,
  • ZHANG Yan
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  • 1. PetroChina Changqing Oilfield Company, Xi’an 710018, China;
    2. National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi’an 710018, China;
    3. Exploration Department, PetroChina Changqing Oilfield Company, Xi’an 710018, China;
    4. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Xi’an 710018, China;

Received date: 2018-09-03

  Online published: 2018-09-07

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摘要

河套盆地历经40余年勘探,近期获得重大突破,松5井在古近系临河组试油获得62.6 m3/d工业油流。通过临河坳陷石油地质特征综合研究认为：狼山断裂、杭五断裂、黄河断裂控制了坳陷沉积演化与生烃中心,该坳陷经历了早白垩世拗陷期、新生代断陷期2个沉积演化阶段。发育白垩系固阳组、古近系临河组2套咸水湖相烃源岩,有机质丰度高,以Ⅱ1型及Ⅰ型为主,生烃潜力大,因埋深变化大,低成熟到高、过成熟阶段均有分布。主要发育固阳组、临河组碎屑岩储集层,埋深小于5 000 m的储集层物性较好,在吉西凸起带基岩风化裂隙也有一定的储集能力。勘探发现断块型、断背斜型、基岩裂缝型油藏,为低成熟—成熟原油,来自固阳组及临河组生油岩。研究表明临河坳陷油气资源丰富、勘探潜力大,固阳组及临河组是主要勘探目的层,杭五断裂带、吉西凸起带、北部深凹陷区是有利勘探地区。图12参24

关键词： 河套盆地; 临河坳陷; 石油地质特征; 白垩系固阳组; 古近系临河组; 烃源岩; 储集层; 杭五断裂

本文引用格式

付锁堂 , 付金华 , 喻建 , 姚泾利 , 张才利 , 马占荣 , 杨亚娟 , 张艳 . 河套盆地临河坳陷石油地质特征及勘探前景[J]. 石油勘探与开发, 2018 , 45(5) : 749 -762 . DOI: 10.11698/PED.2018.05.01

Abstract

After over four decades of exploration, a major breakthrough has been made in the Hetao Basin recently, that is, commercial oil flow of 62.6 m3/d is tested from the Paleogene Linhe Formation in Well Song 5. A comprehensive study of petroleum geological features of the Linhe Depression reveals that the Langshan fault, Hangwu fault and Huanghe fault controlled the deposition and evolution of the depression and hydrocarbon generation center, and the basin experienced Early Cretaceous depression and Cenozoic faulting. There developed two sets of saline lake hydrocarbon source rocks, Cretaceous Guyang Formation and Paleogene Linhe Formation. The source rocks, dominantly type Ⅱ1 and Ⅰ, have high abundance of organic matter and large potential of hydrocarbon generation, and their maturity ranges from low mature to over mature owing to wide variation of burial depth. The Guyang Formation and Linhe Formation are the clastic reservoirs, which have good physical properties with burial depth less than 5 000 m. In the Jixi uplift, the weathering fractures in matrix also have storage capacity. Faulted block, faulted anticline and matrix fracture reservoirs are found through exploration. The low mature to mature oil, is generated from Guyang Formation and Linhe Formation. The study shows that the Linhe Depression has rich resources and huge exploration potential, where the main exploration targets are the Guyang and Linhe formations, the favorable exploration areas are the Hangwu fault belt, Jixi uplift belt and the deep sag in the north.

Key words： Hetao Basin; Linhe Depression; petroleum geological features; Cretaceous Guyang Formation; Paleogene Linhe Formation; source rock; reservoir; Hangwu fault

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