GB777901A - Improvements in screw threaded unions for tubular members - Google Patents

Improvements in screw threaded unions for tubular members

Info

Publication number
GB777901A
GB777901A GB2369555A GB2369555A GB777901A GB 777901 A GB777901 A GB 777901A GB 2369555 A GB2369555 A GB 2369555A GB 2369555 A GB2369555 A GB 2369555A GB 777901 A GB777901 A GB 777901A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
portions
pipe
thread
straight
crown
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
GB2369555A
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.)
Phoenix Rheinrohr A G
PHOENIX-RHEINROHR AG
Original Assignee
Phoenix Rheinrohr A G
PHOENIX-RHEINROHR AG
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods ; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/08Casing joints

Abstract

777,901. Pipe couplings. PHOENIXRHEINROHR AKT.-GES. Aug. 17, 1955 [Sept. 11, 1954], No. 23695/55. Class 99(1) [Also in Group XXIV] In a screw-threaded pipe union for liners of bore holes, one pipe 4, Fig. 2, is provided with a conical course thread having flat radial portions 6 and oblique portions 13 which are convexly curved and coact with corresponding straight portions 7 of the thread on the other pipe 3. In Fig. 2 the crown portions 11 and base portions 12 of the thread are straight and parallel to the general conical line a of the thread and the radius of curvature of the portions 9 is twice to three times greater than that of the portions 8 whereby a space 16 is left between the interengaging crown and base portions of the threads. The inward end of the thread on each pipe merges into the surface,of the pipe. In Fig. 3 the crown portions of the threads are elongated compared with Fig. 2 and the crown portions 17 on one pipe are convexly curved whilst the corresponding base portions 18 on the other pipe are straight, the oblique. portions 15 on both pipes being straight.
GB2369555A 1955-08-17 1955-08-17 Improvements in screw threaded unions for tubular members Expired GB777901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2369555A GB777901A (en) 1955-08-17 1955-08-17 Improvements in screw threaded unions for tubular members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2369555A GB777901A (en) 1955-08-17 1955-08-17 Improvements in screw threaded unions for tubular members

Publications (1)

Publication Number Publication Date
GB777901A true true GB777901A (en) 1957-06-26

Family

ID=6686866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2369555A Expired GB777901A (en) 1955-08-17 1955-08-17 Improvements in screw threaded unions for tubular members

Country Status (1)

Country Link
GB (1) GB777901A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047316A (en) * 1958-10-01 1962-07-31 Atlas Bradford Company Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
FR2083272A5 (en) * 1970-05-04 1971-12-10 Sandvikens Jernverks Ab
EP0454147A2 (en) * 1990-04-27 1991-10-30 Baker-Hughes Incorporated Thread form
FR2863681A1 (en) * 2003-12-11 2005-06-17 Vallourec Mannesmann Oil & Gas Threaded pipe joint forming a mutual rigid connection of the tubular elements with radial gripping between radial force contact zones of the threads
US7240928B2 (en) * 2002-09-17 2007-07-10 Weatherford/Lamb, Inc. Tubing connection arrangement
US7331614B2 (en) 2001-02-09 2008-02-19 Vallourec Mannesmann Oil & Gas France Tubular threaded joint with trapezoid threads having convex bulged thread surface

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047316A (en) * 1958-10-01 1962-07-31 Atlas Bradford Company Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
FR2083272A5 (en) * 1970-05-04 1971-12-10 Sandvikens Jernverks Ab
EP0454147A2 (en) * 1990-04-27 1991-10-30 Baker-Hughes Incorporated Thread form
EP0454147A3 (en) * 1990-04-27 1992-03-25 Baker Hughes Incorporated Thread form
US7331614B2 (en) 2001-02-09 2008-02-19 Vallourec Mannesmann Oil & Gas France Tubular threaded joint with trapezoid threads having convex bulged thread surface
US7240928B2 (en) * 2002-09-17 2007-07-10 Weatherford/Lamb, Inc. Tubing connection arrangement
US8136216B2 (en) 2002-09-17 2012-03-20 Weatherford/Lamb, Inc. Method of coupling expandable tubing sections
FR2863681A1 (en) * 2003-12-11 2005-06-17 Vallourec Mannesmann Oil & Gas Threaded pipe joint forming a mutual rigid connection of the tubular elements with radial gripping between radial force contact zones of the threads
WO2005059422A1 (en) * 2003-12-11 2005-06-30 Vallourec Mannesmann Oil & Gas France Improvement of resistance to fatigue of a threaded tubular connection
US7845687B2 (en) 2003-12-11 2010-12-07 Vallourec Mannesmann Oil & Gas France Resistance to fatigue of a threaded tubular connection
US8146959B2 (en) 2003-12-11 2012-04-03 Vallourec Mannesmann Oil & Gas France Fatigue resistant pipe string component

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