层理对页岩储层压裂改造效果影响的实验研究
发布时间：2018-09-18 08:32
【摘要】：为了研究层理对页岩储层高度方向改造效果的影响,利用龙马溪组页岩露头开展了大尺寸真三轴压裂模拟实验,分析了水力压裂裂缝在储层高度方向上的扩展规律,并通过声发射定位解释结果对不同实验条件下的改造效果进行了定量评价。结果发现:储层高度方向的改造效果受垂向应力与层理特征的共同影响。高垂向应力(30 MPa)条件下,有利于沟通更多层理。弱胶结层理面会降低水力裂缝穿层的可能,显著降低储层高度方向的沟通效果。随着层理开启数量增多,裂缝形态更加复杂,储层高度方向的改造越充分,有效改造体积也就越大。原始开启层理面的扰动导致SRV与ESRV之间存在偏差。
[Abstract]:In order to study the effect of bedding on the reconstruction effect of shale reservoir height direction, the large size true triaxial fracturing simulation experiment was carried out by using the outcrop of shale in Longmaxi formation, and the propagation law of hydraulic fracturing fracture in the direction of reservoir height was analyzed. The reconstruction effect under different experimental conditions was evaluated quantitatively by the results of acoustic emission localization interpretation. The results show that the transformation effect of reservoir height direction is affected by vertical stress and bedding characteristics. Under the condition of high vertical stress (30 MPa), it is advantageous to communicate more stratification. The weakly cemented bedding surface can reduce the possibility of hydraulic fracture penetration and decrease the communication effect of reservoir height direction. With the increase of the number of bedding opening and the more complex fracture morphology, the more sufficient the reservoir height direction is, the larger the effective reconstruction volume will be. The disturbance of the original open plane leads to the deviation between SRV and ESRV.
【作者单位】： 川庆钻探工程有限公司井下作业公司;中国石油大学(北京)石油工程学院;
【基金】：国家重大专项课题“水平井压裂设计优化系统”(2016ZX05023-001)
【分类号】：TE357.1
本文编号：2247344
[Abstract]:In order to study the effect of bedding on the reconstruction effect of shale reservoir height direction, the large size true triaxial fracturing simulation experiment was carried out by using the outcrop of shale in Longmaxi formation, and the propagation law of hydraulic fracturing fracture in the direction of reservoir height was analyzed. The reconstruction effect under different experimental conditions was evaluated quantitatively by the results of acoustic emission localization interpretation. The results show that the transformation effect of reservoir height direction is affected by vertical stress and bedding characteristics. Under the condition of high vertical stress (30 MPa), it is advantageous to communicate more stratification. The weakly cemented bedding surface can reduce the possibility of hydraulic fracture penetration and decrease the communication effect of reservoir height direction. With the increase of the number of bedding opening and the more complex fracture morphology, the more sufficient the reservoir height direction is, the larger the effective reconstruction volume will be. The disturbance of the original open plane leads to the deviation between SRV and ESRV.
【作者单位】： 川庆钻探工程有限公司井下作业公司;中国石油大学(北京)石油工程学院;
【基金】：国家重大专项课题“水平井压裂设计优化系统”(2016ZX05023-001)
【分类号】：TE357.1
【相似文献】
相关期刊论文 前1条
1 贺振建;刘宝军;王朴;;准噶尔盆地永进地区侏罗系层理缝成因及其对储层的影响[J];油气地质与采收率;2011年01期
，本文编号：2247344
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2247344.html
