石油学报 ›› 2010, Vol. 31 ›› Issue (1): 1-11.DOI: 10.7623/syxb201001001

• 地质勘探 •    下一篇

准噶尔盆地石炭系油气成藏组合特征及勘探前景

何登发 1 陈新发 2 况 军 2 袁 航 1 吴晓智 1，3 杜 鹏 1 唐 勇 2   

  1. 1中国地质大学海相储层演化与油气富集机理教育部重点实验室 北京 100083； 2 中国石油新疆油田公司 新疆克拉玛依 834000； 3 中国石油勘探开发研究院 北京 100083
  • 收稿日期:2009-10-12 修回日期:2009-11-12 出版日期:2010-01-25 发布日期:2010-05-21
  • 通讯作者: 何登发

Characteristics and exploration potential of Carboniferous hydrocarbon plays in Junggar Basin

HE Dengfa 1 CHEN Xinfa 2 KUANG Jun 2 YUAN Hang 1 WU Xiaozhi 1,3 DU Peng 1 TANG Yong 2   

  • Received:2009-10-12 Revised:2009-11-12 Online:2010-01-25 Published:2010-05-21
  • Contact: HE Dengfa

PDF

摘要：

随着五彩湾气田、石西油田、克拉美丽气田等石炭系火山岩油气田逐渐被发现，准噶尔盆地的石炭系业已成为油气勘探的重点层系。石炭纪是准噶尔—吐哈地块由地块裂离、拼合到克拉通内坳陷盆地演化的过渡时期，在早、晚石炭世分别经历了由伸展到聚敛的发展旋回，早石炭世以海相沉积为主，晚石炭世发育海陆交互相与火山岩建造。上石炭统巴塔玛依内山组火山岩以陆上中心式和裂隙式喷发为主，主要发育的中基性和中酸性火山岩经受长期风化淋滤以及有机酸、深部热液溶蚀，形成风化壳与内幕储层。风化壳储层厚度与规模受间断时间、岩性、岩相及断裂控制，储集空间以次生孔隙、裂缝为主，优质储层主要分布在不整合面之下350m距离以内，局部古地貌高部位更为有利；火山岩内幕储层主要受火山机构、岩相及短期沉积间断控制，火山爆发相、溢流相易形成有利储层。下石炭统主要发育砂砾岩储层。准噶尔盆地石炭系目前已发现9种油气藏类型和3种基本油气成藏模式。以储集体为基础，石炭系发育上石炭统火山岩风化壳、上石炭统火山岩内幕、下石炭统砂砾岩与上石炭统砂砾岩4类油气成藏组合，其中第1类为已建立的成藏组合，后3类为概念型成藏组合。准噶尔盆地石炭系烃源岩的厚度大，火山岩储集体发育，油气成藏条件有利，勘探潜力巨大，加强油气成藏组合分析是提高准噶尔盆地石炭系勘探效率的重要保证。

关键词: 准噶尔盆地, 石炭系, 火山岩, 成藏模式, 油气成藏组合, 勘探潜力

Abstract:

The Carboniferous period was the transitional period in which the Junggar and the Tulupan-Hami micro-continental blocks separated from each other, converged together and ran into a stage of an interior cratonic basin. It underwent two cycles from extension to convergence during the Early and the Late Carboniferous periods, respectively. The Early Carboniferous was characterized chiefly by marine deposition, while the Late Carboniferous developed the marine-terrestrial transitional facies and volcanic rocks. The volcanic rocks of Batamayineishan Formation of the Upper Carboniferous (C2b) were dominantly of center-eruptive and fracture-eruptive origins, medium-to-basic and medium-to-acid rocks, and volcanic rocks consisted of such reservoirs as the weathering crust and the interior interval owing to the long-periods of weathering and leaching, the dissolution of organic acid or deep thermal fluids. The reservoir thickness and scale of the weathering crust were largely influenced by the hiatus, lithology, litho-facies and faults. The reservoir space was composed mainly of secondary pores and fractures. The effective reservoir intervals occurred within 350m downward from the unconformity at top Carboniferous, while the local positive relief was more favorable. On the other hand, the volcanic interior reservoir intervals were chiefly controlled by the volcanic edifices, litho-facies and the short-period of hiatus, while the explosive and the overflowing facies were more prone to be reservoirs. The reservoir of the Lower Carboniferous was mainly of the sandy-conglomerates. Based upon the reservoir features, there were four kinds of hydrocarbon plays in the Carboniferous including the weathering crust of the Upper Carboniferous volcanic rocks, the interior interval of the Upper Carboniferous volcanic rocks, the sandy-conglomerates of the Upper Carboniferous, and the sandy-conglomerates of the Lower Carboniferous. The first one is the established play, while the other three types are the conceptual plays. The Carboniferous of Junggar Basin has the properties of large thickness of hydrocarbon source rocks, much-developed volcanic reservoirs and favorable conditions for oil and gas pool-formation and thus has a promising and large exploration potential.

Key words: Junggar Basin, Carboniferous, volcanic rock, mode of oil and gas pool-formation, hydrocarbon play, exploration potential

版权所有 © 2021 《石油学报》编辑部

通讯地址：北京市西城区六铺炕街6号 (100724)

电话：62067137(收稿查询、地质勘探栏目编辑)，010-62067128(期刊发行)，62067139(油田开发、石油工程栏目编辑)　

E-mail: syxb@cnpc.com.cn(编辑部)，syxb8@cnpc.com.cn(收稿及稿件查询)，syxbgeo@126.com(地质勘探栏目编辑)，syxb7@cnpc.com.cn(油田开发、石油工程栏目编辑，期刊发行)

本系统由北京玛格泰克科技发展有限公司设计开发 技术支持：support@magtech.com.cn　

京ICP备13000890号-1