IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0351854
(2003-01-27)
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발명자
/ 주소 |
- Haugen, David M.
- Tilton, Frederick T.
- Simpson, Neil A. A.
- Gray, Kevin L.
- Badrak, Robert
- Brunnert, David J.
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출원인 / 주소 |
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대리인 / 주소 |
Moser, Patterson & Sheridan, L.L.P.
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인용정보 |
피인용 횟수 :
29 인용 특허 :
23 |
초록
▼
The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequ
The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequently formed in casing wall. In another aspect of the invention, the apparatus includes a run-in string or drill stem with a drill bit attached to a lower end thereof. A diverter, like a whipstock is attached temporarily to the drill bit with a mechanically shearable connection. At a lower end of the whipstock, a container is formed and connected thereto. The container is designed to house a predetermined amount of exothermic material at one side thereof adjacent the portion of casing where the window or opening will be formed. A telescopic joint extends between the bottom of the container and an anchor therebelow and the telescopic joint is in an extended position when the apparatus is run into a wellbore. In use, the exothermic material, like thermite is ignited and the window is formed in the casing. The telescopic joint is then caused to move to a second position, locating the whipstock adjacent the newly formed casing window.
대표청구항
▼
The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequ
The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequently formed in casing wall. In another aspect of the invention, the apparatus includes a run-in string or drill stem with a drill bit attached to a lower end thereof. A diverter, like a whipstock is attached temporarily to the drill bit with a mechanically shearable connection. At a lower end of the whipstock, a container is formed and connected thereto. The container is designed to house a predetermined amount of exothermic material at one side thereof adjacent the portion of casing where the window or opening will be formed. A telescopic joint extends between the bottom of the container and an anchor therebelow and the telescopic joint is in an extended position when the apparatus is run into a wellbore. In use, the exothermic material, like thermite is ignited and the window is formed in the casing. The telescopic joint is then caused to move to a second position, locating the whipstock adjacent the newly formed casing window. or In Situ Retorting of Oil Shale In the Piceance Creek Basin of Northwestern Colorado; Dougan et al Quarterly of the Colorado School of Mines, pp. 57-72. Retoring Oil Shale Underground-Problems & Possibilities; B.F. Grant, Qtly of Colorado School of Mines, pp 39-46. Molecular Mechanism of Oil Shale Pyrolysis in Nitrogen and Hydrogen Atmospheres, Hershkowitz et al.; Geochemistry and Chemistry of Oil Shales, American Chemical Society, May 1983 pp. 301-316. The Characteristics of a Low Temperature in Situ Shale Oil; George Richard Hill & Paul Dougan, Quarterly of the Colorado School of Mines, 1967; pp. 75-90. Direct Production Of A Low Pour Point High Gravity Shale Oil; Hill et al., I & EC Product Research and Development, 6(1), Mar. 1967; pp. 52-59. Refining Of Swedish Shale Oil, L. Lundquist, pp. 621-627. The Benefits of In Situ Upgrading Reactions to the Integrated Operations of the orinoco Heavy-Oil Fields and Downstream Facilities, Myron Kuhlman, Society of Petroleum Engineers, Jun. 2000; pp. 1-14. Monitoring Oil Shale Retorts by Off-Gas Alkene/Alkane Ratios, John H. Raley, Fuel, vol. 59, Jun. 1980, pp. 419-42. The Shale Oil Question, Old and New Viewpoints, A Lecture in the Engineering Science Academy, Dr. Fredrick Ljungstrom, Feb. 23, 1950, published in Teknisk Trdskrift, Jan. 1951 p. 33-40. Underground Shale Oil Pyrolysis According to the Ljungstroem Method; Svenska Skifferolje Aktiebolaget (Swedish Shale Oil Corp.), IVA, vol. 24, 1953, No. 3, pp. 118-123. Kinetics of Low-Temperature Pyrolysis of Oil Shale by the IITRI RF Process, Sresty et al.; 15thOil Shale Symposium Colorado School of Mines, Apr. 1982, pp. 1-13. Bureau of Mines Oil-Shale Research, H.M. Thorne, Quarterly of the Colorado School of Mines, pp. 77-90. Application of a Microretort to Problems in Shale Pyrolysis, A. W. Weitkamp & L.C. Gutberlet, Ind. Eng. Chem. Process Des. Develop. vol. 9, No. 3, 1970, pp. 386-395. Oil Shale, Yen et al., Developments in Petroleum Science 5, 1976, pp. 187-189, 197-198. The Composition of Green River Shale Oils, Glenn L. Cook, et al., United Nations Symposium on the Development and Utilization of Oil Shale Resources, 1968, pp. 1-23. High-Pressure Pyrolysis of Green River Oil Shale, Burnham et al., Geochemistry and Chemistry of Oil Shales, American Chemical Society, 1983, pp. 335-351. Geochemistry and Pyrolysis of Oil Shales, Tissot et al., Geochemistry adn Chemistry of Oil Shales, American Chemic Society, 1983, pp. 1-11. A Possible Mechanism of Alkene/Alkane Production, Burnham et al., Oil Shale, Tar Sands, and Related Materials, American Chemical Society, 1981, pp. 79-92. The Ljungstroem In-Situ Method of Shale Oil Recovery, G. Salomonsson, Oil Shale and Cannel Coal, vol. 2, Proceedings of the Second Oil Shale and Cannel Coal Conference, Institute of Petroleum, 1951, London, pp. 260-280. Developments in Technology for Green River Oil Shale, G.U. Dinneen, United Nations Symposium on the Development and Utilization of Oil Shale Resources, Leramie Petroleum Research Center, Bureau of Mines, 1968, pp. 1-20. The Thermal and Structural Properties of a Hanna Basin Coal, R.E. Glass, Transactions of the ASME, vol. 106, Jun. 1984, pp. 266-271. The Thermal and Structural Properties of the Coal in the Big Coal Seam, R.E. Glass, In Situ, 8(2), 1984, pp. 193-205. Investigation of the Temperature Variation of the Thermal Conductivity and Thermal Diffusivity of Coal, Badzioch et al., Fuel, vol. 43, No. 4, Jul. 1964, pp. 267-280. On the Mechanism of Kerogen Pyrolysis, Alan K. Burnham & James A. Happe, Jan. 10, 1984 (17 pages). Proposed Field Test of the Lins Method Thermal Oil Recovery Process in Athabasca McMurray Tar Sands, Husky Oil Company. Comparison of Methods for Measuring Kerogen Pyrolysis Rates and Fitting Kinetic Parameters, Burnham et al., Mar. 23, 1987, (29 pages). Further Comparison of Methods for Measuring Kerogen Pyrolysis Rates and Fitting Kinetic Parameters, Burnham et al., Sep. 1987, (16
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