水平井定向分簇射孔技术及其应用

发布时间：2018-08-27 16:18

【摘要】：定向分簇射孔技术整合了分簇射孔与定向射孔的技术优势,解决了一系列技术难题。为了使该技术取得更好的油气开发效果,研究了射孔器自身重力偏心、电子选发模块的编码与地面程序控制相匹配、轴向居中触点信号传输以及射孔后簇间密封隔离等工艺技术,实现了电缆输送水平井射孔器自重定向、动态传输信号、可靠寻址与选发射孔以及射孔后簇间密封等功能,完成了射孔管串一次下井射孔与桥塞联作或多簇射孔作业,形成一套水平井电缆输送定向分簇射孔技术。应用于页岩气、煤层气等非常规气藏生产现场的效果表明:定向准确,选发射孔可靠,簇间密封良好,技术效果明显。定向分簇射孔技术攻克了井眼轨迹偏移主力产层的射孔难题,具有明确的目标性和方向性,有力支撑后续储层改造,促使压裂液最大限度地作用于主力产层,更好地配合制造储层复杂缝网,实现对非常规气藏的优质高效开发。
[Abstract]:Directional cluster perforation technology integrates the technical advantages of cluster perforation and directional perforation, and solves a series of technical problems. In order to obtain better oil and gas development effect, the gravity eccentricity of perforator itself is studied. The transmission of axial center contact signal and the sealing isolation between clusters after perforation have realized the functions of self-orientation of perforator, dynamic transmission of signal, reliable addressing and selecting emitter hole, sealing between clusters after perforation, etc, in horizontal well of cable transmission, such as self-orientation of perforator, dynamic transmission of signal, reliable addressing and selecting emitter hole, sealing between clusters after perforation, etc. A set of directional cluster perforation technology for cable transport in horizontal wells was developed by combining perforation with bridge plug or multiple cluster perforation. The results of application in the field of unconventional gas reservoirs such as shale gas and coalbed methane show that the orientation is accurate, the hole selection is reliable, the seal between clusters is good, and the technical effect is obvious. The directional cluster perforation technique has overcome the perforation problem of the main production layer of wellbore trajectory migration, has a clear goal and directivity, has the ability to support the subsequent reservoir reconstruction, and impel the fracturing fluid to act to the maximum extent in the main production layer. The high quality and high efficiency development of unconventional gas reservoir can be realized by making complex fracture network of reservoir.
【作者单位】：中国石油川庆钻探工程公司测井公司;
【基金】：国家科技重大专项“页岩气储层增产改造技术”(编号:2012ZX05018-004)
【分类号】：TE257.1

【相似文献】