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FR2297332A1 - Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking - Google Patents

Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking

Info

Publication number
FR2297332A1
FR2297332A1 FR7500729A FR7500729A FR2297332A1 FR 2297332 A1 FR2297332 A1 FR 2297332A1 FR 7500729 A FR7500729 A FR 7500729A FR 7500729 A FR7500729 A FR 7500729A FR 2297332 A1 FR2297332 A1 FR 2297332A1
Authority
FR
France
Prior art keywords
pressure differential
during braking
blade
downhole
diamond bit
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
FR7500729A
Other languages
French (fr)
Other versions
FR2297332B1 (en
Inventor
Moisei Timofeevich Gusman
Boris Georgievich Ljubimov
Igor Leonidovich Konstantinov
Irina Ivanovna Kuznetsova
Boris Davidovich Malkin
Gely Meierovich Nikitin
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.)
INST BUROVOI TEKHNIK
Original Assignee
INST BUROVOI TEKHNIK
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 INST BUROVOI TEKHNIK filed Critical INST BUROVOI TEKHNIK
Priority to FR7500729A priority Critical patent/FR2297332A1/en
Publication of FR2297332A1 publication Critical patent/FR2297332A1/en
Application granted granted Critical
Publication of FR2297332B1 publication Critical patent/FR2297332B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

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

Abstract

A turbodrill for mounting on the bottom of a wall drill string has a multistage turbine (a) with stations secured to the drill housing and rotors secured to a common shaft supported in the housing by bearings via which the weight of the drill string can be transmitted to the shaft and a bit, pref. a diamond bit, carried by the shaft, the rotor and station blades each being shaped so that (a) an angle O between tangents to the centre line of the blade profile at the inlet and outlet stages of the blade is in the range 180 degrees (4.5 to 7) a1, a1 being the angle between a line parallel to the turbine axis and the tangent to the centre line of the blade profile at the inlet edge and, (b) an angle alpha 2, between a line parallel to the turbine axis and the tangent to the centre line of the blade profile at the outlet edge is in the range (3.5 to 6) alpha 1. The ratio of maximum thickness of each blade to the chord length thereo fis in the range 0.09-0.19. Pressure differential does not increase by >20% during braking.
FR7500729A 1975-01-10 1975-01-10 Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking Granted FR2297332A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7500729A FR2297332A1 (en) 1975-01-10 1975-01-10 Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7500729A FR2297332A1 (en) 1975-01-10 1975-01-10 Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking

Publications (2)

Publication Number Publication Date
FR2297332A1 true FR2297332A1 (en) 1976-08-06
FR2297332B1 FR2297332B1 (en) 1977-07-08

Family

ID=9149638

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7500729A Granted FR2297332A1 (en) 1975-01-10 1975-01-10 Downhole turbo drill for driving diamond bit - has turbine blades profiled to minimise changes in pressure differential during braking

Country Status (1)

Country Link
FR (1) FR2297332A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497868A1 (en) * 1981-01-12 1982-07-16 Young David ASSEMBLY FORMING BEARING AND SEAL FOR A ROTATING SHAFT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497868A1 (en) * 1981-01-12 1982-07-16 Young David ASSEMBLY FORMING BEARING AND SEAL FOR A ROTATING SHAFT

Also Published As

Publication number Publication date
FR2297332B1 (en) 1977-07-08

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Legal Events

Date Code Title Description
ST Notification of lapse