GB8410657D0 - Damping means - Google Patents

Damping means

Info

Publication number
GB8410657D0
GB8410657D0 GB848410657A GB8410657A GB8410657D0 GB 8410657 D0 GB8410657 D0 GB 8410657D0 GB 848410657 A GB848410657 A GB 848410657A GB 8410657 A GB8410657 A GB 8410657A GB 8410657 D0 GB8410657 D0 GB 8410657D0
Authority
GB
United Kingdom
Prior art keywords
damping means
damping
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.)
Withdrawn
Application number
GB848410657A
Other versions
GB2140846A (en
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.)
Webb J T H
Original Assignee
Webb J T H
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
Priority claimed from GB838311456A external-priority patent/GB8311456D0/en
Application filed by Webb J T H filed Critical Webb J T H
Priority to GB08410657A priority Critical patent/GB2140846A/en
Publication of GB8410657D0 publication Critical patent/GB8410657D0/en
Publication of GB2140846A publication Critical patent/GB2140846A/en
Withdrawn legal-status Critical Current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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F04B53/145—Rod shock absorber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
GB08410657A 1983-04-27 1984-04-26 Improvements in or relating to damping means Withdrawn GB2140846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08410657A GB2140846A (en) 1983-04-27 1984-04-26 Improvements in or relating to damping means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838311456A GB8311456D0 (en) 1983-04-27 1983-04-27 Damping means
GB08410657A GB2140846A (en) 1983-04-27 1984-04-26 Improvements in or relating to damping means

Publications (2)

Publication Number Publication Date
GB8410657D0 true GB8410657D0 (en) 1984-05-31
GB2140846A GB2140846A (en) 1984-12-05

Family

ID=26285959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08410657A Withdrawn GB2140846A (en) 1983-04-27 1984-04-26 Improvements in or relating to damping means

Country Status (1)

Country Link
GB (1) GB2140846A (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1014140A (en) * 1974-07-10 1977-07-19 Leonard Mason Drilling string shock-absorbing tool
US3963228A (en) * 1974-12-23 1976-06-15 Schlumberger Technology Corporation Drill string shock absorber
US4055338A (en) * 1976-02-17 1977-10-25 Hughes Tool Company Drill string shock absorbing apparatus
US4067405A (en) * 1976-10-04 1978-01-10 Bassinger Tools, Inc. Hydraulic shock absorber
DE2647810C2 (en) * 1976-10-22 1978-12-14 Christensen, Inc., Salt Lake City, Utah (V.St.A.) Shock absorbers for deep drilling rods
US4186569A (en) * 1978-02-21 1980-02-05 Christensen, Inc. Dual spring drill string shock absorber
US4145034A (en) * 1978-03-16 1979-03-20 Hughes Tool Company Heat shield for a drill string shock absorbing apparatus
CA1226274A (en) * 1978-07-14 1987-09-01 Kenneth H. Wenzel Shock absorbing tool for a well drilling string
CA1130781A (en) * 1979-12-10 1982-08-31 Hughes Tool Company Drill string shock absorbr with pressurized lubricant system

Also Published As

Publication number Publication date
GB2140846A (en) 1984-12-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)