| “二元法”在构造裂缝定量预测中的应用——以松辽盆地青一段泥页岩为例 |
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| 引用本文： | 吴林强,刘成林,张涛,郭洪周,徐晶晶,蒋成竹.“二元法”在构造裂缝定量预测中的应用——以松辽盆地青一段泥页岩为例[J].地质力学学报,2018,24(5):598-606. |
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| 作者姓名： | 吴林强 刘成林 张涛 郭洪周 徐晶晶 蒋成竹 |
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| 作者单位： | 中国地质调查局发展研究中心;中国石油大学(北京)地球科学学院 |
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| 基金项目： | 国土资源部公益性科研专项（201211051-03）；中国地质调查项目（DD20160158） |
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| 摘 要： | 松辽盆地青山口组一段是一套重要的烃源岩层,也是盆地主要的裂缝性油藏和页岩油藏发育层。裂缝不仅是油气运移的主要通道,也是重要的储集空间,裂缝分布规律的评价对盆地今后页岩油和裂缝性油藏的勘探开发具有重要的指导意义。利用ANSYS与Suffer联合建模并采用Petrel软件对研究区岩石力学参数进行三维随机模拟的方法,对松辽盆地古近纪末期的应力场进行了三维数值模拟。结果表明,研究区最大主应力的变化范围为24～147 MPa,最小主应力变化范围为3.8～114.4 MPa;扶余隆起带附近为最大主应力低值区,大庆长垣附近为最大主应力高值区;最小水平主应力的应力低值区和高值区的分布与最大水平主应力大致相同。在此基础上,采用二元法对裂缝密度作了定量的预测,预测值与实测值吻合度较高。预测结果显示,齐家—古龙凹陷、大庆长垣以及梨树—德惠等地裂缝相对较为发育,是下一步勘探的重点。
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| 关 键 词： | 青一段 有限元法 应力场数值模拟 裂缝定量预测 |
| 收稿时间： | 2017/10/27 0:00:00 |
| 修稿时间： | 2018/4/2 0:00:00 |
THE APPLICATION OF TWO FACTOR METHOD IN QUANTITATIVE PREDICTION OF TECTONIC FRACTURES: A CASE STUDY OF SHALE IN QING-1 MEMBER, SONGLIAO BASIN |
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| WU Linqiang,LIU Chenglin,ZHANG Tao,GUO Hongzhou,XU Jingjing and JIANG Chengzhu.THE APPLICATION OF TWO FACTOR METHOD IN QUANTITATIVE PREDICTION OF TECTONIC FRACTURES: A CASE STUDY OF SHALE IN QING-1 MEMBER, SONGLIAO BASIN[J].Journal of Geomechanics,2018,24(5):598-606. |
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| Authors: | WU Linqiang LIU Chenglin ZHANG Tao GUO Hongzhou XU Jingjing and JIANG Chengzhu |
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| Institution: | Development Research Center, China Geological Survey, Beijing 100037, China,College of Geoscience, China University of Petroleum, Beijing 102249, China,Development Research Center, China Geological Survey, Beijing 100037, China,Development Research Center, China Geological Survey, Beijing 100037, China,Development Research Center, China Geological Survey, Beijing 100037, China and Development Research Center, China Geological Survey, Beijing 100037, China |
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| Abstract: | Qing-1 member of Qingshankou Formation in the Songliao Basin is an important hydrocarbon source formation and also the main development layer for fractured reservoir and shale oil reservoir. Fractures act not only as major pathways but also as important reservoir space. The evaluation of distribution pattern of fractures is instructive to the exploration and development of shale oil as well as fractured oil reservoirs. With finite element software ANSYS and Suffer to jointly model and by using software Petrel to simulate the rock mechanics parameters in three dimensional stochastically, the 3-D numerical simulation of plaeo stress field in late Paleogene is performed. The results show that the maximum principal stress in the study area varies from 24 to 147 MPa, and the minimum principal stress varies from 3.8 to 114.4 MPa. The area near Fuyu uplift zone is the low maximum principal stress area, while the area near Daqingchangyuan is the high maximum principal stress area. The distribution of the minimum horizontal principal stress in the low and high stress areas is approximately the same as that of the maximum horizontal principal stress. Based on the simulation, fracture density is predicted quantitatively through two factor method, with a relatively high reliability and coincidence rate of the measured one. The results show that the density in the Qijia-Gulong Depression, Daqingchangyuan and the Lishu-Dehui Depression is higher than other areas, which means they are the key exploration areas. |
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| Keywords: | Qing-1 member finite element method numerical simulation of stress field fracture quantative prediction |
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