岩性油气藏 ›› 2017, Vol. 29 ›› Issue (4): 20–29.doi: 10.3969/j.issn.1673-8926.2017.04.003

• 油气地质 • 上一篇    下一篇

准噶尔盆地新春地区新近系油气富集规律

杨元亮1, 朱筱敏2, 马瑞国1, 董艳蕾2, 侯帅军1, 江强2, 刘成权3   

  1. 1. 中国石化新疆新春石油开发有限责任公司, 山东 东营 257000;
    2. 中国石油大学 (北京)地球科学学院, 北京 102249;
    3. 中国石油吉林油田分公司 地球物理勘探研究院, 吉林 松原 138000
  • 收稿日期:2016-05-12 修回日期:2016-07-10 出版日期:2017-07-21 发布日期:2017-07-21
  • 作者简介:杨元亮(1967-),男,博士,教授级高级工程师,主要从事油藏地质与开发方面的研究工作。地址:(257000)山东省东营市西四路633号。电话:(0546)8810170。Email:bncyc@163.com。
  • 基金资助:
    国家自然科学基金项目“陆相断陷湖盆深水浊积扇定量地震地貌学研究”（编号：41202078）、国家重大科技专项项目“准噶尔盆地侏罗系陆相浅水富砂盆地层序地层模式与技术规范”（编号：2011ZX05009-002）和中国石油大学（北京）科研基金资助项目“陆相盆地不同类型砂体地震沉积学模式研究”（编号：KYJJ2012-01-31）与“中国西部叠合盆地深部有效碎屑岩储层成因机制与发育模式”（编号：2011CB201104）联合资助

Hydrocarbon accumulation rules of Neogene in Xinchun area,Junggar Basin

YANG Yuanliang1, ZHU Xiaomin2, MA Ruiguo1, DONG Yanlei2, HOU Shuaijun1, JIANG Qiang2, LIU Chengquan3   

  1. 1. Xinchun Oil Development Co., Ltd., Sinopec, Dongying 257000, Shandong, China;
    2. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    3. Geophysical Exploration Research Institute, PetroChina Jilin Oilfield Company, Songyuan 138000, Jilin, China
  • Received:2016-05-12 Revised:2016-07-10 Online:2017-07-21 Published:2017-07-21

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摘要： 由于对准噶尔盆地新春地区新近系沙湾组油气藏的成藏条件及成藏规律认识不清，导致多口探井连续失利。通过对区域构造、油源对比、输导体系及成藏特征等的综合分析表明：成藏有利条件包括构造演化、烃源岩、储层、盖层和圈闭等，油气生成于四棵树凹陷侏罗系，自南向北运移，富集于沙湾组中下部；沙一段Ⅰ砂组发育厚砂层，单层厚度大，对油气的运聚起到了高效输导的作用，沙一段Ⅱ砂组和沙二段均以砂泥岩互层为主，在喜山期小断层的纵向沟通作用下，在沙二段薄砂岩储层中最终成藏；侏罗系和新近系2套毯砂为车排子凸起区油气远距离运移提供了横向输导条件，不整合面与上倾尖灭砂体的耦合关系控制着沙一段Ⅰ砂组油气的富集，喜山期形成的小断层与砂体耦合关系控制着沙一段Ⅱ砂组和沙二段的油气成藏。

关键词: 低渗油藏, 合理生产压差, 启动压力梯度, 压敏效应

Abstract: The hydrocarbon accumulation conditions and rules of Neogene Shawan Formation(N1s)in Xinchun area are unclear,resulting in the failure of several exploratory wells. The regional structure,oil-source correlation,migration system and reservoir accumulation characteristics were analyzed. The results show that the favorable reservoir accumulation conditions include structural evolution, source rock, reservoir, seal and trap. Hydrocarbon generated from Jurassic in Sikeshu Sag,migrated northward and enriched in the first member(N1s1)and second member(N1 s1)of Shawan Formation. The sand group I of N1 s1 developed thick sands with large single layer thickness,which plays an important role in hydrocarbon migration and accumulation. N1 s2 and sand group Ⅱ of N1 s1 mainly developed sand-shale interbed. Under the vertical communication of small Himalayan faults,the thin sandstone of N1 s2 is finally accumulated. It is believed that two sets of thick layers of sandstone supply the lateral pathway for the hydrocarbon migration and enrichment,the coupling relationship of unconformity with pinchout sandstones controls the hydrocarbon enrichment of the sand group I of N1s1,and the coupling relationship of sandstones with small Himalayan faults developed controls the hydrocarbon accumulation of N1 s2 and sand group Ⅱ of N1s1.

Key words: low permeability reservoirs, reasonable production pressure difference, threshold pressure gradient, pressure-sensitive effect

中图分类号: 

  • TE122.3
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