公开(公告)号：WO2011140426A1

公开(公告)日：2011-11-10

申请号：PCT/US2011/035496

申请日：2011-05-06

Applicant: SMART DRILLING AND COMPLETION, INC. ,  VAIL, William, Banning, III. ,  DEKLE, Robert, I. ,  SKERI, Damir, S. ,  CHITWOOD, James, E.

Inventor： VAIL, William, Banning, III. ,  DEKLE, Robert, I. ,  SKERI, Damir, S. ,  CHITWOOD, James, E.

IPC: E21B19/00

CPC classification number: E21B4/18 ,  E21B19/18 ,  E21B21/08 ,  E21B21/10 ,  E21B23/10

Abstract: Methods and apparatus are described to drill and complete wellbores. Such wellbores include extended reach horizontal wellbores, for example in shales, deep subsea extended reach wellbores, and multilateral wellbores. Specifically, the invention provides simple threaded subassemblies that are added to existing threaded tubular drilling and completion equipment which are used to dramatically increase the lateral reach using that existing on-site equipment. These subassemblies extract power from downward flowing clean mud, or other fluids, in an annulus to provide additional force or torque on tubular elements within the wellbore, while maintaining circulation, to extend the lateral reach of the drilling equipment and completion equipment. These added elements include combinations of The Leaky Seal™, a Cross-Over, The Force Sub™ and The Torque Sub™. The use of such additional simple elements allow lighter drilling equipment to be used to reach a given lateral distance, therefore reducing drilling costs.

Abstract translation: 描述了钻井和完井孔的方法和装置。 这种井筒包括延伸到达的水平井筒，例如在页岩中，深海底延伸的井眼井和多边井筒。 具体地，本发明提供了简单的螺纹组件，其被添加到现有的螺纹管状钻孔和完井设备中，其用于使用现有的现场设备来显着增加横向距离。 这些子组件从循环中向下流动的清洁泥浆或其他流体中提取动力，以在保持循环的同时在井筒内的管状元件上提供额外的力或扭矩，以延伸钻井设备和完井设备的横向距离。 这些添加元素包括“泄漏密封”，“交叉”，“力SubTM”和“扭矩”子集的组合。 使用这种附加的简单元件允许更轻的钻井设备用于达到给定的横向距离，从而降低钻井成本。