GB806553A - Improvements in or relating to tapering pin-and-box type threaded couplings - Google Patents

Improvements in or relating to tapering pin-and-box type threaded couplings

Info

Publication number
GB806553A
GB806553A GB32956/56A GB3295656A GB806553A GB 806553 A GB806553 A GB 806553A GB 32956/56 A GB32956/56 A GB 32956/56A GB 3295656 A GB3295656 A GB 3295656A GB 806553 A GB806553 A GB 806553A
Authority
GB
United Kingdom
Prior art keywords
screw
pin
thread
box
pitch
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
GB32956/56A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB806553A publication Critical patent/GB806553A/en
Expired 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
    • E21B17/042—Threaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

806,553. Rod, &c. couplings. BATAAFSCHE PETROLEUM MAATSCHAPPIJ N. V. DE. Oct. 29, 1956 [Oct. 31, 1955], No. 32956/56. Addition to 786,652. Class 99(1). [Also in Group XXIV] In a pin-and-box coupling, e.g. for a welldrilling string, the pin 2 and the box 3 are each provided with tapering screw-threads 7, 8 at least one of which when unloaded, deviates from a normal tapering screw-thread in such a way that when the coupling has been tightened up the inner flanks of the screw-thread on the pin and the outer flanks of the screw-thread on the box are more heavily loaded than the other flanks of the screw-threads. A normal tapering screw-thread is defined as one in which the pitch and taper are uniform throughout the length thereof, and the outer and inner flanks are defined as those flanks which are directed respectively away from and towards a plane M normal to the axis of the screw-thread and bisecting the length of the screw-thread. As shown in Fig. 1, the pin 2 is provided on a drill collar 1 formed with a shoulder 5 which is in contact with a shoulder 6 on a drill collar 3 formed with the box 4, and the screw-threads have flattened tips, and roots. The coupling may be made up by the application of mechanical power, or the box may be heated before being screwed on to the pin so that consequent shrinkage thereof contributes to the loading of the screw-threads. A local variation of pitch may be provided on one or both of the screw-threads near the middle thereof, or the pitch of the screw-thread at the smaller diameter end of the pin may be smaller than the pitch at the larger diameter end of the pin whilst the pitch of the screw-thread on the box is larger at the end corresponding to the smaller diameter end of the pin than at the other end of the box. In another case, both the screw-threads have a constant pitch, the pitch of the screw-thread on the pin being smaller than that of the box, and the taper of the pin at the larger diameter end being smaller and at the smaller diameter end being larger than the taper of the box. Further, the pitch of the screwthread on the pin may be smaller than that of the screw-thread on the box, the difference in pitch decreasing from the middle of the screwthreads towards both ends ; preferably, the pin has a normal tapering screw-thread, and the decrease of the difference in pitch is continuous. Specification 799,028 is referred to.
GB32956/56A 1954-03-16 1956-10-29 Improvements in or relating to tapering pin-and-box type threaded couplings Expired GB806553A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL185953A NL89471C (en) 1954-03-16 1954-03-16
NL201628A NL96590C (en) 1954-03-16 1955-10-31

Publications (1)

Publication Number Publication Date
GB806553A true GB806553A (en) 1958-12-31

Family

ID=26645479

Family Applications (3)

Application Number Title Priority Date Filing Date
GB7378/55A Expired GB786652A (en) 1954-03-16 1955-03-14 Improvements in or relating to tapering box-and-pin-type threaded couplings
GB32953/56A Expired GB801456A (en) 1954-03-16 1956-10-29 Improvements in or relating to cylindrical pin-and-box type threaded couplings
GB32956/56A Expired GB806553A (en) 1954-03-16 1956-10-29 Improvements in or relating to tapering pin-and-box type threaded couplings

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB7378/55A Expired GB786652A (en) 1954-03-16 1955-03-14 Improvements in or relating to tapering box-and-pin-type threaded couplings
GB32953/56A Expired GB801456A (en) 1954-03-16 1956-10-29 Improvements in or relating to cylindrical pin-and-box type threaded couplings

Country Status (4)

Country Link
DE (2) DE1012876B (en)
FR (3) FR1124979A (en)
GB (3) GB786652A (en)
NL (6) NL89471C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589550A (en) * 1969-11-17 1971-06-29 Nat Forge Co Flexible thread systems for high-pressure vessels and the like
GB2145791A (en) * 1983-08-31 1985-04-03 Hunting Oilfield Services Threaded pipe connectors
GB2146086A (en) * 1983-09-06 1985-04-11 Hunting Oilfield Services Threaded pipe connectors
GB2146084A (en) * 1983-08-31 1985-04-11 Hunting Oilfield Services Pipe connectors
US4673201A (en) * 1983-09-01 1987-06-16 Hunting Oilfield Services (Uk) Limited Pipe connector
US9770766B2 (en) 2012-01-20 2017-09-26 Ceratizit Austria Gesellschaft M.B.H. Hard-material threaded connection

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129963A (en) * 1960-06-30 1964-04-21 Robbins Machine & Mfg Co Low release torque threaded joint
NL271091A (en) * 1961-11-07 1964-07-27
GB1111995A (en) * 1964-05-29 1968-05-01 Sandvikens Jernverks Ab Improvements in threaded drill rod elements
FR2190237A5 (en) * 1972-06-16 1974-01-25 Vallourec
FR2190238A5 (en) * 1972-06-16 1974-01-25 Vallourec
US4121862A (en) * 1977-04-06 1978-10-24 Exxon Production Research Company Pipe connection
US4373754A (en) * 1978-08-09 1983-02-15 Hydril Company Threaded connector
USRE34467E (en) * 1983-04-29 1993-12-07 The Hydril Company Tubular connection
DE3474331D1 (en) * 1983-04-29 1988-11-03 Hydril Co Improved tubular connection
JP2620101B2 (en) * 1988-03-23 1997-06-11 宣行 杉村 Aki muffler
US4892337A (en) * 1988-06-16 1990-01-09 Exxon Production Research Company Fatigue-resistant threaded connector
DE4111463A1 (en) * 1991-04-09 1992-10-15 Festo Kg EXTERNAL THREAD AND INTERNAL THREAD, PREFERABLY FOR THE PRODUCTION OF FLUIDIC CONNECTIONS IN PNEUMATICS
DE4431377C1 (en) * 1994-08-29 1996-05-09 Mannesmann Ag Pipe connector
WO2007089427A2 (en) * 2006-01-26 2007-08-09 Ramos, Beverly, Watts Threaded pipe connection
US20070220731A1 (en) * 2006-03-23 2007-09-27 Hardinge, Inc. Apparatus and method for engaging components through thermal contraction
NL1033343C2 (en) * 2007-02-06 2008-08-07 Gerrit Cornelis Koese Coupling for rotationally connecting two elements and drilling device equipped with them in one direction of rotation.
CN102296935A (en) * 2011-07-30 2011-12-28 山西环界石油钻具制造有限公司 High-antitorque moment threaded connecting structure for outer coring pipes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817808A (en) * 1930-11-20 1931-08-04 Spang Chalfant & Company Inc Method of making tight threaded joints

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589550A (en) * 1969-11-17 1971-06-29 Nat Forge Co Flexible thread systems for high-pressure vessels and the like
GB2145791A (en) * 1983-08-31 1985-04-03 Hunting Oilfield Services Threaded pipe connectors
GB2146084A (en) * 1983-08-31 1985-04-11 Hunting Oilfield Services Pipe connectors
US4673201A (en) * 1983-09-01 1987-06-16 Hunting Oilfield Services (Uk) Limited Pipe connector
GB2146086A (en) * 1983-09-06 1985-04-11 Hunting Oilfield Services Threaded pipe connectors
US9770766B2 (en) 2012-01-20 2017-09-26 Ceratizit Austria Gesellschaft M.B.H. Hard-material threaded connection

Also Published As

Publication number Publication date
NL96590C (en) 1960-08-15
NL201628A (en)
DE1151774B (en) 1963-07-25
FR71006E (en) 1959-10-07
FR1162733A (en) 1958-09-16
NL201627A (en)
GB801456A (en) 1958-09-17
GB786652A (en) 1957-11-20
DE1012876B (en) 1957-08-01
NL185953B (en)
FR1124979A (en) 1956-10-22
NL89471C (en) 1958-06-16
NL96272C (en) 1960-06-15

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