公开(公告)号：US20150330155A1

公开(公告)日：2015-11-19

申请号：US14443173

申请日：2013-11-15

Applicant: EVOLUTION ENGINEERING INC.

Inventor： Aaron W. LOGAN ,  Daniel W. AHMOYE ,  David A. SWITZER ,  Justin C. LOGAN ,  Patrick R. DERKACZ ,  Mojtaba KAZEMI

IPC: E21B17/02 ,  F16L25/02 ,  F16L15/08 ,  E21B17/042 ,  E21B17/046

CPC classification number: E21B17/028 ,  E21B17/003 ,  E21B17/042 ,  E21B17/046 ,  F16L15/08 ,  F16L25/02 ,  F16L25/021 ,  F16L2201/40

Abstract: An insulating collar for a gap sub assembly for electromagnetic (EM) telemetry used in downhole drilling is disclosed. The gap sub assembly comprises a female member comprising a female mating section and a male member comprising a male mating section and a gap section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. The insulating collar is positioned on the gap section. The collar is made up of a framework with a plurality of discrete bodies spaced about the framework and a portion of each of the discrete bodies protrudes above the framework. Either the framework or the discrete bodies are made of an electrical insulator material to electrically isolate one end of the collar from the other end of the collar. The collar therefore electrically isolates the male member from the female member and the male member, female member and insulating collar function as the “gap sub” for EM telemetry.

Abstract translation: 公开了一种用于在井下钻井中使用的用于电磁（EM）遥测的间隙子组件的绝缘套环。 间隙子组件包括阴构件，其包括阴配合部分和包括阳配合部分和间隙部分的阳构件。 阳配合部分配合地接纳在阴配合部分内并且与其电绝缘。 绝缘套环位于间隙部分上。 轴环由具有围绕框架间隔开的多个离散体的框架构成，并且每个离散体的一部分在框架上方突出。 框架或离散体由电绝缘材料制成，以将套环的一端与套环的另一端电隔离。 因此，套环将阳构件与阴构件电绝缘，阳构件，阴构件和绝缘环用作EM遥测的“间隙”。