基于声波测井资料的地应力分布研究 ——以饶阳凹陷任北奥陶系潜山为例

›› 2011, Vol. 32 ›› Issue (9): 2765-2770.

基于声波测井资料的地应力分布研究 ——以饶阳凹陷任北奥陶系潜山为例

李静¹，查明²，刘震³

1. 中国石油大学（华东）储运与建筑工程学院，山东青岛 266555；2. 中国石油大学（华东）地球科学与技术学院，山东青岛 266555； 3. 中国石油集团工程设计有限责任公司北京分公司，北京 100085

收稿日期:2010-02-10 出版日期:2011-09-10 发布日期:2011-09-13
作者简介:李静，女，1967年生，博士，副教授，主要从事岩土工程与地质工程方面的综合研究与教学工作
基金资助:
国家自然科学基金项目（No. 40772081）；中国石油股份有限公司重点科技攻关项目（No. HBYT-WTY-2008-JS-1）

Research on crustal stress distribution based on acoustic logging data ——Taking North Region of Renqiu Ordovician Buried Hill of Raoyang Depression for example

LI Jing¹，ZHA Ming²，LIU Zhen³

1. College of Transport & Storage and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China; 2. College of Geoscience and Technique, China University of Petroleum (East China), Qingdao, Shandong 266555, China; 3. Beijing Branch, China Petroleum Group Engineering Design Co., Ltd., Beijing 100085, China

Received:2010-02-10 Online:2011-09-10 Published:2011-09-13

摘要/Abstract

摘要： 以饶阳凹陷任北奥陶系潜山为例，基于声波测井资料确定了岩石力学参数，视区域边界荷载为未知数，目标井地应力为约束，求解得出区域所受边界力；据此建立地质模型、计算模型、力学模型，对研究区的地应力进行了数值模拟，得出该区域地应力的分布规律及特点。研究结果表明，通过数值模拟求得的地应力值与实际测量地应力值吻合较好；研究区水平最大主应力值主要集中在-61～-118 MPa，水平最大主应力方向中北部为北西方向，南部为近南北方向；最小水平主应力值主要集中在-31～-91 MPa，北部最小应力值方向为北东方向，南部为近东西方向。断裂带附近是应力变化的梯度带，断裂带内主应力值较连续地层小，断层对水平主应力的分布具有显著影响

关键词: 声波测井, 地应力, 潜山, 奥陶系

Abstract: Taking the North Region of Renqiu Ordovician Buried Hill of Raoyang Depression for example, the rock mechanical parameter is defined according to acoustic logging data; the regional boundary loads as unknown condition, the crustal stress of the key well points are taken as constraint conditions, the regional boundary stress is obtained. The geological model, calculation model and mechanical model are established based on it. The distribution rule and characteristic of regional crustal stress are obtained by using simulation in study area. The result shows that the value of crustal stress by numerical simulations is consistent with that of actual measurements. The maximum horizontal principal stress focuses between -61 MPa and -118 MPa in study area, the direction of maximum horizontal principal stress in middle-north part is in west-north, and in south part is in north-south. The minimum horizontal principal stress focuses between -31 MPa and -91 MPa, the direction of minimal horizontal principal stress in north part is in east-north, and in south part is in west-east. Besides, the main crustal stress in the fault zone is smaller than that in continuous strata, the adjacency of fault zone is gradient zone of stresses variation, and the fault zone has an obvious effect on the distribution of horizontal principal stress.

Key words: acoustic logging, crustal stress, buried hill, Ordovician

中图分类号:

P 554

李静，查明，刘震. 基于声波测井资料的地应力分布研究 ——以饶阳凹陷任北奥陶系潜山为例[J]. , 2011, 32(9): 2765-2770.

LI Jing ，ZHA Ming ，LIU Zhen. Research on crustal stress distribution based on acoustic logging data ——Taking North Region of Renqiu Ordovician Buried Hill of Raoyang Depression for example[J]. , 2011, 32(9): 2765-2770.

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