天然气地球科学 ›› 2020, Vol. 31 ›› Issue (12): 1677–1686.doi: 10.11764/j.issn.1672-1926.2020.07.006

• 天然气地质学 • 上一篇    下一篇

塔里木盆地塔北隆起轮南低凸起断裂与深层油气勘探

李洪辉1(),曹颖辉1,陈志勇1,杨敏1,赵一民1,董洪奎1,闫磊1,杜德道1,王珊1,刘伟1,徐兆辉1,马德波1,朱光有1,陈秀艳1,杨鹏飞2   

  1. 1.中国石油勘探开发研究院,北京 100083
    2.中国石油塔里木油田公司勘探开发研究院,新疆 库尔勒 841000
  • 收稿日期:2020-05-21 修回日期:2020-07-31 出版日期:2020-12-10 发布日期:2020-12-11
  • 作者简介:李洪辉(1963-),男,天津人, 高级工程师,硕士,主要从事地球探测与信息技术研究.E-mail: lhh@petrochina.com.cn.
  • 基金资助:
    中国石油天然气股份有限公司“十三五”重大科技项目“古老碳酸盐岩油气成藏分布规律与关键技术”(2019B-04B2);中国石油天然气股份有限公司科技项目“塔里木盆地寒武—奥陶系新层系新领域成藏条件与有利区带评价”(kt2018-02-01)

The faults and deep petroleum exploration in the Lunnan lower uplift of the Tabei rise, Tarim Basin

Hong-hui LI1(),Ying-hui CAO1,Zhi-yong CHEN1,Min YANG1,Yi-min ZHAO1,Hong-kui DONG1,Lei YAN1,De-dao DU1,Shan WANG1,Wei LIU1,Zhao-hui XU1,De-bo MA1,Guang-you ZHU1,Xiu-yan CHEN1,Peng-fei YANG2   

  1. 1.Research Institute of Exploration and Development,PetroChina,Beijing 100083,China
    2.Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China
  • Received:2020-05-21 Revised:2020-07-31 Online:2020-12-10 Published:2020-12-11
  • Supported by:
    The Major Science and Technology Projects of PetroChina during the 13th Five Year Plan(2019B-04B2);The Science and Technology Project of PetroChina(kt2018-02-01)

摘要:

塔里木盆地轮南低凸起历经多期构造及成藏演化,开展断裂性质及其封闭性研究尤为重要,这决定该区下一步油气勘探领域和方向。从构造演化入手,系统研究了该区主要断裂形成期次、组合样式、性质及规模,结合已发现油气藏的原油密度、干燥系数、含蜡量等油气相态指标及它们在平面上的分布特点,对该区主要断裂的开启及封闭性进行了分析。研究认为轮南低凸起发育轮南、桑塔木、轮古东、轮西、轮古西和轮台等6条规模较大断裂,除轮古东断裂现今仍具有开启性外,其余断层现今均为封闭性,尤其是轮古西断裂,晚海西期之后就已经停止活动,具有封闭性,有利于深层油气的保存。轮古西地区深层寒武系膏盐岩之下区域是下一步油气勘探的有利方向。

关键词: 走滑断裂, 断裂封闭性, 油气相态, 深层, 中浅层, 膏盐岩层

Abstract:

The Lunnan lower uplift has experienced complex tectonic evolution and hydrocarbon accumulation. The nature and sealing capacity of the faults are significant for hydrocarbon accumulation and the study on the potential and direction of the future petroleum exploration. After a fairly understood about the regional tectonics, the faulting phases, deformation styles, nature and scale of the faults in the Lunnan lower uplift were studied systematically. Combined with the previous petroleum chemical study results, and the oil-gas distribution characteristics, the opening-sealing history of the faults in the Lunnan lower uplift is carefully analyzed in this paper. According to our study, the Lunnan, Sangtamu, Lungu East and Lunxi faults are the main faults in the Lunnan Lower uplift. All of them are closed at present, except the Lungu East fault which is the only one in the main faults is opening now. Especially the Lungu West fault was dead since late Hercynian period. This fault characteristics are in favour of the preservation of the deep oil-gas reservoir in Lunnan. Therefore, the Cambrian infra salt series in the Lungu West area is the favorable direction in the future petroleum exploration.

Key words: Strike-slip fault, Sealing capacity of the fault, Hydrocarbon facies, Deeply underground, Moderate-shallow underground, Gypsum-salt layer

中图分类号: 

  • TE122.1

图1

塔北隆起轮南低凸起位置"

图2

轮南低凸起构造演化特征"

图3

轮南低凸起古生代断裂分布特征"

图4

轮南低凸起断裂地震剖面特征"

图5

轮南地区油气成藏剖面"

图6

轮南奥陶系原油密度分布特征"

图7

轮南地区天然气干燥系数散点图"

图8

轮东地区奥陶系原油含蜡量"

图9

轮古西地区走滑断裂分段地震特征"

图10

轮古西地区地震属性"

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