岩性油气藏 ›› 2017, Vol. 29 ›› Issue (5): 1–10.doi: 10.3969/j.issn.1673-8926.2017.05.001

• 油气地质 •    下一篇

高分辨率层序格架下的陆相湖盆精细沉积体系研究——以吐哈盆地西缘侏罗系—古近系为例

杨占龙1,2, 肖冬生3, 周隶华4, 黄云峰1,2, 黄小鹏1,2, 沙雪梅1,2   

  1. 1. 中国石油勘探开发研究院西北分院, 兰州 730020;
    2. 中国石油天然气集团公司油藏描述重点实验室, 兰州 730020;
    3. 中国石油吐哈油田分公司勘探开发研究院, 新疆哈密 839009;
    4. 中国石油新疆油田分公司采油一厂, 新疆 克拉玛依 834000
  • 收稿日期:2017-02-13 修回日期:2017-05-16 出版日期:2017-09-21 发布日期:2017-09-21
  • 作者简介:杨占龙(1970-),男,博士,高级工程师,主要从事岩性油气藏勘探方法与技术和含油气盆地与区带综合评价方面的研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。Email:yang_zl@petrochina.com.cn。
  • 基金资助:
    国家油气重大专项“岩性地层油气藏区带、圈闭评价方法与关键技术”（编号：2017ZX05001-003）资助

Depositional system of lacustrine basins within high-resolution sequence framework:a case of Jurassic to Paleogene in western Turpan-Kumul Basin

YANG Zhanlong1,2, XIAO Dongsheng3, ZHOU Lihua4, HUANG Yunfeng1,2, HUANG Xiaopeng1,2, SHA Xuemei1,2   

  1. 1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China;
    2. Key Laboratory of Reservoir Description, China National Petroleum Corporation, Lanzhou 730020, China;
    3. Research Institute of Exploration and Development, PetroChina Tuha Oilfield Company, Hami 839009, Xinjiang, China;
    4. No. 1 Oil Production Plant, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China
  • Received:2017-02-13 Revised:2017-05-16 Online:2017-09-21 Published:2017-09-21

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摘要： 为深化吐哈盆地吐鲁番坳陷西部富油气区侏罗系—古近系岩性油气藏精细勘探，以井-震匹配的四级层序格架建立为基础，系统开展了高分辨率层序格架约束下的精细沉积体系研究。结果表明：井-震匹配的四级层序格架单元是开展空间精细沉积体系研究的最大单元；层位与储层的两步标定是准确建立井-震匹配关系的关键步骤；等时层序格架内的地震反射横向变化分析是明确沉积体系横向对接和演变的核心。研究认为：北部天山和南部觉罗塔格造山带的差异构造活动是控制沉积体系横向变迁的主要因素；辫状河三角洲前缘水下分流河道是最主要的储集体类型；依附于古构造背景发育的河道侧向、上倾尖灭砂体是盆地西缘葡北、葡萄沟、神泉、胜南地区岩性油气藏扩展勘探的有利方向。在该认识指导下，吐鲁番坳陷西部富油气区岩性油气藏扩展勘探取得了良好效果。

关键词: 页岩气, 页岩孔隙, 孔隙度, 孔隙结构表征, 积分几何

Abstract: In order to deepen the fine exploration of Jurassic-Paleogene lithologic reservoirs in the oil-rich zones of the western Turpan Depression of Turpan-Kumul Basin,based on well-seismic matching fourth-order sequence framework establishment,systemically fine depositional system was deeply studied and spatial distribution was depicted. The result shows that establishment of the fourth-order sequence framework based on well-seismic matching is the maximum study unit for understanding fine depositional system,the two-step horizon-reservoir calibration is a key step for the matching analysis of logging calibration to seismic,and the lateral variation analysis of seismic reflection within isochronous sequence framework is core for the deep understanding of contacting and evolution of different sedimentary bodies. It is considered that the differential tectonic activities of Tianshan orogenic belt in the north and the Jueluotage orogenic belt in the south are main controlling factors for the lateral migration of depositional system,the underwater distributary channel sandstone within braided river delta front is the main type of reservoir,and lateral up-dipping and pinching out sand bodies attaching to paleo-topographic setting are favorable for extend lithologic reservoir exploration in Pubei,Putaogou,Shenquan and Shengnan areas of western Turpan Depression. Under the guidance of this understanding,good result has been achieved in the exploration of lithologic reservoirs in oil-rich zones of western Turpan Depression.

Key words: shale gas, shale pore, porosity, pore structure characterization, integral geometry

中图分类号: 

  • TE121.3
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