基本信息:
- 专利标题： 一种特低渗透储层直井全方位立体压裂方法
- 专利标题（英）：All-directional three-dimensional fracturing method for vertical well of reservoir with ultra low permeability
- 申请号：CN201610909054.9 申请日：2016-10-18
- 公开(公告)号：CN107956463A 公开(公告)日：2018-04-24
- 发明人： 钟安海 , 张全胜 , 高广启 , 陈勇 , 孟庆民 , 郁登郎 , 王丽萍 , 张军锋 , 丁然 , 苏权生
- 申请人： 中国石油化工股份有限公司 , 中国石油化工股份有限公司胜利油田分公司石油工程技术研究院
- 申请人地址： 山东省东营市东营区济南路125号
- 专利权人： 中国石油化工股份有限公司,中国石油化工股份有限公司胜利油田分公司石油工程技术研究院
- 当前专利权人： 中国石油化工股份有限公司,中国石油化工股份有限公司胜利油田分公司石油工程技术研究院
- 当前专利权人地址： 山东省东营市东营区济南路125号
- 代理机构： 济南日新专利代理事务所
- 代理人： 刘亚宁
- 主分类号： E21B43/267
- IPC分类号： E21B43/267
The invention provides an all-dimensional three-dimensional fracturing method for a vertical well of a reservoir with ultra low permeability. The method comprises the following steps that firstly, a shaft of the target reservoir is subjected to first volume fracturing to form a main crack extending in the direction of the maximum principal stress and secondary net-shaped cracks around the main crack, and the main crack is temporarily blocked; secondly, the shaft of the target reservoir is subjected to second volume fracturing, since the maximum principal stress field within a certain range around the shaft turns over at almost 90 degrees after first volume fracturing, a secondary main crack perpendicularly intersecting with the main crack generally can be constructed through second volumefracturing, and net-shaped cracks are formed around the secondary main crack. By means of the method, the all-dimensional three-dimensional net-shaped cracks can be constructed in the vertical well through fracturing, the transformation volume of an oil well is greatly increased, and the productivity of the oil well is improved.
公开/授权文献:
- CN107956463B 一种特低渗透储层直井全方位立体压裂方法 公开/授权日：2020-07-24
IPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21B | 土层或岩石的钻进；从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
| ------E21B43/00 | 从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆的方法或设备 |
| --------E21B43/16 | .提高开采碳氧化合物的方法 |
| ----------E21B43/26 | ..通过形成裂隙或裂缝 |
| ------------E21B43/267 | ...通过支撑加强裂缝 |