Electrical tubing control and remediation apparatus and method of use
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-023/00
E21B-036/00
출원번호
US-0655315
(2003-09-05)
발명자
/ 주소
Baugh,Benton F.
Crawford,James R.
출원인 / 주소
Baugh,Benton F.
Crawford,James R.
인용정보
피인용 횟수 :
2인용 특허 :
3
초록▼
The method of operating a subsurface safety valve and preventing or remediating the formations of hydrate, wax, or paraffin solids in the well bore of an oil or gas well comprising coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate
The method of operating a subsurface safety valve and preventing or remediating the formations of hydrate, wax, or paraffin solids in the well bore of an oil or gas well comprising coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate portion of said string of tubing, inserting said surface control valve into a well bore pipe on a string of tubing, electrically grounding said surface control valve to said well bore pipe, communicating an electrical signal from the surface along said string of tubing, to said surface control valve, and along said well bore pipe back to said surface, closing said surface control valve upon the interruption of said electrical signal, and using the electrical resistance of said string of tubing to heat the wall of said string of tubing.
대표청구항▼
The invention claimed is: 1. The method of operating a subsurface safety valve in an oil or gas well comprising: coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate portion of said string of tubing, inserting said surface control va
The invention claimed is: 1. The method of operating a subsurface safety valve in an oil or gas well comprising: coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate portion of said string of tubing, inserting said surface control valve into a well bore pipe on the string of tubing, electrically grounding said surface control valve to said well bore pipe, communicating an electrical signal from the surface along said string of tubing, to said surface control valve, and along said well bore pipe back to said surface, and closing said surface control valve upon the interruption of said electrical signal, opening said subsurface control valve by hydraulic flow within said tubing string, and dropping an insert from said surface to said surface control valve to assist in the opening of said surface control valve. 2. The method of claim 1, wherein said insert is a ball. 3. The method of claim 1, wherein said insert will dissolve in the fluids in the well bore. 4. The method of claim 1, wherein said insert will fall into a receptacle out of the fluid flow after said surface control valve is opened. 5. The method of preventing the formations of hydrate, wax, or paraffin solids in the well bore of an oil or gas well comprising: coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate portion of said string of tubing, inserting said string of tubing into said well bore pipe, electrically grounding the lower end of said string of tubing to said well bore pipe, communicating an electrical signal from the surface along down said string of tubing and along said well bore pipe back up to said surface, and using the electrical resistance of said string of tubing to heat the wall of said string of tubing, using said heated wall of said string of tubing to heat the fluids within the bore of said string of tubing to keep said fluids at a high enough temperature to prevent the formation of hydrate, wax, or paraffin solids inserting a surface control valve into a well bore pipe on said string of tubing, closing said surface control valve upon the interruption of said electrical signal, opening said subsurface control valve by hydraulic flow within said string of tubing and, dropping an insert from said surface to said surface control valve to assist in the opening of said surface control valve. 6. The method of claim 5, wherein said insert is a ball. 7. The method of claim 5, wherein said insert will dissolve in the fluids in the well bore. 8. The method of claim 5, wherein said insert will fall into a receptacle out of the fluid flow after said surface control valve is opened. 9. The method of operating a subsurface safety valve and preventing the formations of hydrate, wax, or paraffin solids in the well bore of an oil or gas well comprising: coating the external area of the intermediate portion of a string of tubing to electrically insulate said intermediate portion of said string of tubing, inserting said surface control valve into a well bore pipe on a string of tubing, electrically grounding said surface control valve to said well bore pipe, communicating an electrical signal from the surface along said string of tubing, to said surface control valve, and along said well bore pipe back to said surface, closing said surface control valve upon the interruption of said electrical signal, using the electrical resistance of said string of tubing to heat the wall of said string of tubing, opening said subsurface control valve by hydraulic flow within said string of tubing, and dropping an insert from said surface to said surface control valve to assist in the opening of said surface control valve. 10. The method of claim 9, wherein said insert is a ball. 11. The method of claim 9, wherein said insert will dissolve in the fluids in the well bore. 12. The method of claim 9, wherein said insert will fall into a receptacle out of the fluid flow after said surface control valve is opened.
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이 특허에 인용된 특허 (3)
Dietz, Wesley P.; Rademaker, Robert A.; McGregor, Ronald W.; Scott, Bruce E., Fail safe surface controlled subsurface safety valve for use in a well.
Eastlund Bernard J. (Spring TX) Schmitt Kenneth J. (The Woodlands TX) Bass Ronald M. (Houston TX) Harrison John M. (Houston TX), Method and system for introducing electric current into a well.
Bridges Jack E. (Park Ridge IL) Sresty Guggilam C. (Burbank IL) Young Vincent R. (Tulsa OK) Spencer Homer L. (Calgary CAX), Mineral well heating systems.
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