CA2237513A1 - Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine - Google Patents

Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine Download PDF

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Publication number
CA2237513A1
CA2237513A1 CA 2237513 CA2237513A CA2237513A1 CA 2237513 A1 CA2237513 A1 CA 2237513A1 CA 2237513 CA2237513 CA 2237513 CA 2237513 A CA2237513 A CA 2237513A CA 2237513 A1 CA2237513 A1 CA 2237513A1
Authority
CA
Canada
Prior art keywords
face
speed reduction
floating piston
drilling fluid
reduction tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2237513
Other languages
French (fr)
Other versions
CA2237513C (en
Inventor
Kenneth Hugo Wenzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NOV Canada ULC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA 2237513 priority Critical patent/CA2237513C/en
Publication of CA2237513A1 publication Critical patent/CA2237513A1/en
Application granted granted Critical
Publication of CA2237513C publication Critical patent/CA2237513C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/02—Adaptations for drilling wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/02—Fluid rotary type drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Retarders (AREA)
  • Drilling And Boring (AREA)

Abstract

A method and apparatus for creating positive pressure in a speed reduction tool of a drilling turbine. A first step involves providing a speed reduction tool with a floating piston having a first face in communication with a sealed planetary gear assembly and a second face. A second step involves providing means for diverting a primary flow of drilling fluids around the second face of the floating piston, thereby isolating the second face of the floating piston from the primary flow of drilling fluid. A third step involves providing a secondary drilling fluid diversion passage that extends from a selected one of a plurality of stages of a drilling turbine to the second face of the floating piston. The second face of the floating piston is exposed only to drilling fluid from the secondary drilling fluid diversion passage. A
desired pressure is selected by a positioning of the secondary drilling fluid diversion passage relative to the plurality of stages.
CA 2237513 1998-05-12 1998-05-12 Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine Expired - Fee Related CA2237513C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2237513 CA2237513C (en) 1998-05-12 1998-05-12 Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2237513 CA2237513C (en) 1998-05-12 1998-05-12 Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine

Publications (2)

Publication Number Publication Date
CA2237513A1 true CA2237513A1 (en) 1999-11-12
CA2237513C CA2237513C (en) 2005-08-02

Family

ID=29275715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2237513 Expired - Fee Related CA2237513C (en) 1998-05-12 1998-05-12 Method and apparatus for creating positive pressure in a speed reduction tool used with a drilling turbine

Country Status (1)

Country Link
CA (1) CA2237513C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113079701A (en) * 2018-11-07 2021-07-06 瑞沃井下工具有限公司 Mud lubricated bearing assembly with lower seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113079701A (en) * 2018-11-07 2021-07-06 瑞沃井下工具有限公司 Mud lubricated bearing assembly with lower seal
CN113079701B (en) * 2018-11-07 2023-11-24 瑞沃井下工具有限公司 Slurry lubricated bearing assembly with lower seal

Also Published As

Publication number Publication date
CA2237513C (en) 2005-08-02

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