GB1444015A - Pull-down devices for boring rigs - Google Patents

Pull-down devices for boring rigs

Info

Publication number
GB1444015A
GB1444015A GB4140375A GB4140375A GB1444015A GB 1444015 A GB1444015 A GB 1444015A GB 4140375 A GB4140375 A GB 4140375A GB 4140375 A GB4140375 A GB 4140375A GB 1444015 A GB1444015 A GB 1444015A
Authority
GB
United Kingdom
Prior art keywords
pull
down devices
rigs
boring
boring rigs
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.)
Expired
Application number
GB4140375A
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.)
TRENTHAM Ltd G PERCY
Original Assignee
TRENTHAM Ltd G PERCY
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 TRENTHAM Ltd G PERCY filed Critical TRENTHAM Ltd G PERCY
Priority to GB4140375A priority Critical patent/GB1444015A/en
Publication of GB1444015A publication Critical patent/GB1444015A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/02—Rod or cable suspensions
    • E21B19/06—Elevators, i.e. rod- or tube-gripping devices
    • E21B19/07—Slip-type elevators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/021—With a rotary table, i.e. a fixed rotary drive for a relatively advancing tool

Abstract

1444015 Kelly pull-down mechanism G PERCY TRENTHAM Ltd 29 March 1974 [23 May 1973] 41403/75 Divided out of 1444014 Heading E1F The disclosure is incorporated in the parent Specification but the claims are directed to a kelly pull-down device.
GB4140375A 1973-05-23 1973-05-23 Pull-down devices for boring rigs Expired GB1444015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4140375A GB1444015A (en) 1973-05-23 1973-05-23 Pull-down devices for boring rigs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4140375A GB1444015A (en) 1973-05-23 1973-05-23 Pull-down devices for boring rigs

Publications (1)

Publication Number Publication Date
GB1444015A true GB1444015A (en) 1976-07-28

Family

ID=10419536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4140375A Expired GB1444015A (en) 1973-05-23 1973-05-23 Pull-down devices for boring rigs

Country Status (1)

Country Link
GB (1) GB1444015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195379A (en) * 1986-09-25 1988-04-07 Robert Michael Sloma Drilling rig

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195379A (en) * 1986-09-25 1988-04-07 Robert Michael Sloma Drilling rig
GB2195379B (en) * 1986-09-25 1990-02-14 Robert Michael Sloma Improvements in or relating to drilling

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee