公开(公告)号：WO2017205761A1

公开(公告)日：2017-11-30

申请号：PCT/US2017/034716

申请日：2017-05-26

Applicant: BOARD OF REGENTS, UNIVERSITY OF TEXAS SYSTEM

Inventor： ZOWARKA, Raymond C. ,  SHARMA, Mukul M. ,  WERST, Michael D. ,  HEARN, Clay ,  WORTHINGTON, Michael ,  HAHNE, Jon ,  LIU, Hsing-Pang ,  BUNKOWSKI, Bryan ,  PRATAP, Siddharth

IPC: H05B6/10 ,  E21B36/04 ,  E21B41/00 ,  E21B43/24 ,  F16L53/00 ,  C02F1/48

CPC classification number: E21B43/2401 ,  E21B36/04 ,  E21B43/127 ,  F16H2025/2028 ,  F16L53/34 ,  H05B6/10 ,  H05B6/108

Abstract: Described herein are methods and system that use electromagnetic heating to heat wellbores and the fluids therein. The heating is achieved by placing one or more permanent magnets in the wellbore and moving a metallic component and/or the one or more permanent magnets relative to each other. This generates eddy currents in the metallic component, which heat the metallic component. This heat is transferred to the fluids in the wellbore from the metallic component by convection. In some embodiments, permanent magnets are installed in the tubing to induce eddy current heating in a well by converting the linear motion of a sucker rod to rotary motion of a conducting tube using a lead or ball screw. The heater may directly integrate with existing pump jack equipment with little or no additional infrastructure required.

Abstract translation: 这里描述的是使用电磁加热来加热井筒及其中的流体的方法和系统。 通过将一个或多个永磁体放置在井筒中并且使金属部件和/或一个或多个永磁体相对于彼此移动来实现加热。 这会在金属部件中产生涡流，从而加热金属部件。 这种热量通过对流从金属部件传递到井筒中的流体。 在一些实施例中，永磁体被安装在管中以通过使用引导或滚珠螺杆将抽油杆的线性运动转换为导管的旋转运动来引起井中的涡电流加热。 加热器可以直接与现有的泵插孔设备集成，几乎不需要额外的基础设施。