GB365197A - Improvements in or relating to trip spears used in well drilling - Google Patents

Improvements in or relating to trip spears used in well drilling

Info

Publication number
GB365197A
GB365197A GB3155130A GB3155130A GB365197A GB 365197 A GB365197 A GB 365197A GB 3155130 A GB3155130 A GB 3155130A GB 3155130 A GB3155130 A GB 3155130A GB 365197 A GB365197 A GB 365197A
Authority
GB
United Kingdom
Prior art keywords
casing
slips
tool
well
trip
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
GB3155130A
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.)
Acme Fishing Tool Co
Original Assignee
Acme Fishing Tool Co
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 Acme Fishing Tool Co filed Critical Acme Fishing Tool Co
Priority to GB3155130A priority Critical patent/GB365197A/en
Publication of GB365197A publication Critical patent/GB365197A/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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

365,197. Well-casing spears. WHITE, A. E., 5, Quality Court, Chancery Lane, London.-(Acme Fishing Tool Co. ; Parkersburg, West Virginia, U.S.A.) Oct. 21, 1930, No. 31551. [Class 85.] A fishing spear for pulling casing from a well com. prises a body 3 with a wedge portion supporting wedge slips 7 and threaded to a head 1 with a bell portion 6 intc which reduced upper parts 11 of the slips extend. Members 8 separ. ate the slips which have teeth 9, 10 in two direc. tions whereby the slips are prevented from rotating in the well casing after engaging the latter. Reduced lower r extensions 12 on the slips enter a cupped retainer 14 supported on ball bearings 19 on a flange 17 of a trip sleeve 18 held to the retainer by a threaded ring 16. The trip sleeve 18 is connected to the body 3 by a pin 20 and L-slot 22. Around the trip sleeve is a spring assembly comprising rings 23, 24, connected by strip springs 26 adapted to engage the inner wall of the well casing, the rings 23, 24 being adjustable to and from each other by screws 25 to vary the effect of the spring. A cone 27 guides the tool into the casing and a flushing passage 28 passes through the tool. In use, the springs 26 are adjusted to support the tool which is inserted in the casing with the parts in the position shown in Fig. 1. On reaching the required location, the body is turned and lifted to move the pin 20 up the slot 22, the wedge part of the body then spreading the slips into engagement with the casing.
GB3155130A 1930-10-21 1930-10-21 Improvements in or relating to trip spears used in well drilling Expired GB365197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3155130A GB365197A (en) 1930-10-21 1930-10-21 Improvements in or relating to trip spears used in well drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3155130A GB365197A (en) 1930-10-21 1930-10-21 Improvements in or relating to trip spears used in well drilling

Publications (1)

Publication Number Publication Date
GB365197A true GB365197A (en) 1932-01-21

Family

ID=10324803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3155130A Expired GB365197A (en) 1930-10-21 1930-10-21 Improvements in or relating to trip spears used in well drilling

Country Status (1)

Country Link
GB (1) GB365197A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178093A (en) * 1985-07-18 1987-02-04 Smith International Releasable spear for retrieving a hollow member from a well bore
GB2194978A (en) * 1986-09-09 1988-03-23 Coal Ind Extracting broken tubes from boreholes
GB2221706A (en) * 1988-08-11 1990-02-14 Coal Ind Tube retracting device
CN107435526A (en) * 2017-08-07 2017-12-05 贵州高峰石油机械股份有限公司 A kind of a wide range of fishing spear and its Refloatation method
US10989017B2 (en) 2015-04-01 2021-04-27 Ardyne Holdings Limited Method of abandoning a well

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178093A (en) * 1985-07-18 1987-02-04 Smith International Releasable spear for retrieving a hollow member from a well bore
GB2194978A (en) * 1986-09-09 1988-03-23 Coal Ind Extracting broken tubes from boreholes
GB2194978B (en) * 1986-09-09 1990-01-10 Coal Ind Tube retracting device
GB2221706A (en) * 1988-08-11 1990-02-14 Coal Ind Tube retracting device
US10989017B2 (en) 2015-04-01 2021-04-27 Ardyne Holdings Limited Method of abandoning a well
CN107435526A (en) * 2017-08-07 2017-12-05 贵州高峰石油机械股份有限公司 A kind of a wide range of fishing spear and its Refloatation method

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