海拉尔盆地乌东地区三维地震裂缝预测方法及应用

中国石油勘探 ›› 2012, Vol. 17 ›› Issue (1): 37-41,6.

海拉尔盆地乌东地区三维地震裂缝预测方法及应用

刘云武,齐振勤,唐振国,陈守田,张秀娟

北京大学地球与空间科学学院;中国石油大庆油田钻探工程公司物探一公司;中国石油大庆油田公司勘探开发研究院;成都理工大学;中国石油渤海钻探工程公司第一录井公司;中国石油大庆油田钻探工程公司地质录井一公司信息中心

出版日期:2012-02-15 发布日期:2012-02-15
基金资助:
国家973项目“火山岩油气藏的形成机制与分布规律”(2009CB2193)

Sedimentary Evolution of Triassic Lower Oil Formation in Akeyasu of Tahe Oilfield and Its Relation to Oil and Gas

Liu Yunwu,Qi Zhenqin,Tang Zhenguo,Chen Shoutian and Zhang Xiujuan

Liu Yunwu1,Qi Zhenqin2,Tang Zhenguo3,4,Chen Shoutian5,Zhang Xiujuan6//1.School of Earth and Space Sciences,Peking University,Beijing 100871;2.Daqing Oilfield Drilling & Exploration Corporation No.1 Geo-Logging Company,PetroChina Daqing Oilfield,Daqing City,Heilongjiang Province 163357;3.Daqing Oilfield E&D Research Institute,Daqing City,Heilongjiang Province 163000;4.Chengdu University of Technology,Chengdu City,Sichuan Province 610000;5.CNPC Bohai Drilling Engineering Company Limited No.1 Logging Company,Tianjin 300280;6.Information Center of Daqing Oilfield Drilling & Exploration Corporation No.1 Geophysical Prospecting Company,PetroChina Daqing Oilfield,Daqing City,Heilongjiang Province 163357

Online:2012-02-15 Published:2012-02-15

摘要/Abstract

摘要： 目前由于油气勘探技术的提高,国内物性较好的沉积岩储层油气资源逐步被发现和开发,而火成岩和基岩变质岩中裂缝储层在华北、辽河油田、大庆等油田相继发现巨大的油气资源,也使裂缝储层成为油气勘探的新领域。以海拉尔盆地乌东地区为例,基于三维地震资料,在建立层序格架和精细断层解释基础上,进行构造应力场模拟,通过构造曲率、最大主应变、最大主应力等参数对构造裂缝分布进行预测,结果表明构造应力场分布与构造断裂体系之间具有较好的相关关系,裂缝发育带分布在不同方向的两组断层相交部位、正断层或逆断层的上盘附近。裂缝预测的影响因素主要是断层的位置和方向的精度,地层横向厚度和密度变化较大也对预测精度产生影响。

关键词: 曲率张量, 变形张量, 应力场张量, 构造应力场模拟, 裂缝储层预测, 海拉尔盆地

Abstract: The Triassic Lower Oil Formation in Akeyasu of Tahe Oilfield is a nice thick reservoir-cap combination featuring in upper mud and lower sand, where shallow braided river delta and shore-shallow lacustrine sediments developed. The braided channel and mid channel of the delta plain intrafacies and the debouch bar of the front intrafacies constitute the main sand body of the Formation. Practical exploration indicated that thick massive channel sand body and debouch bar were main carriers of underground aquifer, oil and gas was mainly generated from the thin mid-channel sand body on the top and constituted local low-amplitude secondary oil and gas reservoirs characterized by upper oil and lower water. Investigating the cause showed that firstly oil and gas that migrated along the fault mainly accumulated in the channel sand body of Upper and Lower Oil Formations on the top, and the Lower Oil Formation had lower filling degree. Secondly, oil and gas was easily migrated and transported and difficult to be accumulated, due to the development of channel sand bodies of strong connectivity in Lower Oil Formation. Oil and gas could only be accumulated in mid-channel pinchout sand body that developed in low-amplitude structures, in addition, the distance of migration and transportation was so long that only low-amplitude structural-lithologic oil and gas reservoirs developed. Therefore, to determine the distribution range of mid-channel sand body and its superimposition relations to low-amplitude structures, and to make clear the time-space matching relation between channel sand and faults were critical to further exploration in Triassic Lower Oil Formation of Akeyasu

Key words: Tahe Oilfield, Akeyasu, Lower Oil Formation, sedimentary characteristics, oil and gas accumulation

刘云武, 齐振勤, 唐振国, 陈守田, 张秀娟. 海拉尔盆地乌东地区三维地震裂缝预测方法及应用[J]. 中国石油勘探, 2012, 17(1): 37-41,6.

Liu Yunwu, Qi Zhenqin, Tang Zhenguo, Chen Shoutian and Zhang Xiujuan. Sedimentary Evolution of Triassic Lower Oil Formation in Akeyasu of Tahe Oilfield and Its Relation to Oil and Gas[J]. China Petroleum Exploration, 2012, 17(1): 37-41,6.

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