US3722053A - Method of making well pressure sealing cup reinforcing structure - Google Patents

Method of making well pressure sealing cup reinforcing structure Download PDF

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Publication number
US3722053A
US3722053A US00166171A US3722053DA US3722053A US 3722053 A US3722053 A US 3722053A US 00166171 A US00166171 A US 00166171A US 3722053D A US3722053D A US 3722053DA US 3722053 A US3722053 A US 3722053A
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United States
Prior art keywords
plate
base portion
tines
securing
rolled
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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 - Lifetime
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US00166171A
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English (en)
Inventor
R Berry
H Blackwell
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.)
Dresser Industries Inc
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Dresser Industries Inc
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Publication date
Application filed by Dresser Industries Inc filed Critical Dresser Industries Inc
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    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/10—Well swabs
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49609—Spring making

Definitions

  • the [58] Field 482 method of manufacture includes the steps of rolling a 166/187; 267/181',92/240, 241 113/116 A, 116R,ll6Y,'l16W References Cited 1 1922 Kraft 13/1 16 A polyiurcated plate with an integral base and tines portion, rolling the base'portion into a cylindrical shape and securing the abutting ends of the base.
  • a primary object of this invention is to provide a method and structure for an improved pressure sealing cup reinforcing structure.
  • a further object is to provide a method and structure for producing a pressure sealing cup reinforcing structure at lower cost.
  • a further object is to provide an intermediate subassembly reinforcement structure for a well pressure sealing cup.
  • a well pressure sealing cup reinforcing structure having a body with a cylindrical base portion having a non-continuous periphery, the body having a plurality of integral, upstanding tines and by the method including the steps of rolling a polyfurcated plate having an integral base and tines portion rolling the base portion into a cylindrical shape and securing the base portion in the cylindrical shape.
  • an intermediate subassembly is provided for use in a well pressure sealing cup including a unitary metallic plate with a first edge and an opposite edge and having a continuous portion along the first edge and integral tines extending from the continuous portion to the opposite edge.
  • FIG. I is an elevation view of an intermediate subassembly for constructing a well pressure sealing cup reinforcing structure according to this invention.
  • FIG. 2 is an end elevation view of the subassembly illustrated in FIG. 1.
  • FIG. 3 is a view partially in elevation and partially in cross section of a well pressure sealing cup reinforcing 0 structure according to this invention.
  • FIG. 4A is a cross section view of the preferred embodiment taken at section line 4--4 in FIG. 3.
  • FIG. 4B is an alternative embodiment of FIG. 4A.
  • FIG. 4C is still another alternative embodiment of" FIG. 4A.
  • FIG. 1 illustrates an intermediate subassembly according to this invention wherein a flat metallic plate of the general shape illustrated may be used to construct the reinforcing structure.
  • the length of a first edge 10 is determined as the approximate circumference for the base of the cup to be more fully described hereinafter.
  • the opposite edge I4 from the first edge 10 is the starting point for sheared or sawed slots 16 which begin at opposite edge 14 and proceed to a point 18 near the first edge 10.
  • all of the necessary multiplicity of slits 16 can be sheared or cut with a single stroke of a punch press although many other methods of manufacture are well known to those with skill in the art.
  • FIG. 2 illustrates an end view of the semi-finished structure in FIG. 1 after bends running parallel to the edge 10 have been performed.
  • Bend 20 and bend 22 achieve an offset from continuous portion 24 of plate 8 to a straight portion 26 of the tines 28 which were formed by slits 16.
  • a bend 30 positions surface 32 on tine 28 at an angle which provides a chamfer or an angular lead on surface to guide the resulting pressure sealing cup past joints, shoulders and other irregularities in the pipe (not shown) in which the cup will seal.
  • FIG. 3 illustrates a semi-finished reinforcing structure after continuous portion 24 has been rolled into a generally cylindrical shape.
  • the outside diameter of cylindrical shape of continuous surface 24 is illustrated at 24 in FIG. 3.
  • Straight portion 26 of the tines may be oriented parallel to central axis 34 or at an angle a of 0 to 15. Since the straight portion 26 is on a larger diameter than continuous portion 24, after forming continuous portion 24 into a cylindrical surface, there will be gaps between the tines since the circumference at a larger diameter 35 is greater than the circumference at diameter 24.
  • the circumferential length of metal at diameter 35 will be equal to the circumferential length of metal at diameter 24.
  • the slots or gaps between the tines provide for exposure of the elastomer as subsequently molded around the reinforcing structure according to this invention whereby the elastomer may feed through the slots between the tines responsive to pressure internal to the cup to maintain a seal between the cup and the pipe in which it seals while the cup may be performing in a static condition as a packer cup or in a dynamic condition as a swab cup.
  • a cylindrical ring 36 may be placed in encircling relationship to cylindrical surface 24 to reinforce the structure and contain the base to prevent outward movement responsive to internal pressure in the finished cup.
  • Tines 28 are thus cantilevered from continuous portion 24 and are flexible at the free end 38 which was originally the opposite edge 14 in FIG. 1.
  • API tubing and casing threads represent the largest usage of threaded connections used in oil and gas wells.
  • the basic distance is 1 inch between the ends-of two pieces of pipe with API tubing or casing threads threaded into a coupling and tightened with the proper torque.
  • Manufacturing tolerances can allow a particular joint dimension to vary plus or minus 0.5 inches, i.e. between 0.5 and 1.5v
  • the straight portion of a well pressure sealing cup should beat least 1.5 inches so the cup may enter the'end of one piece of pipe before leaving the end of the adjacent piece of pipe.
  • a cup too short to span the gap between pipes could move laterally into the larger inside diameter of 'the coupling and allow the cup to become hung in the gap and could allow the cup to lose sealing engagement with the pipe.
  • FIG. 4A illustrates the section 4-4 of FIG. 3.
  • ends 42 and 44 ofcontinuous portion 24 are brought together as illustrated in FIG. 4A at joint 40.
  • the continuous portion 24 is rolled into a substantially 360 cylindrical surface to form thereinforcing structure for a pressure sealing well packer cup or swab cup.
  • the joint 40 may subsequently be reinforced by the continuous ring 36 or it may be welded together.
  • FIG. 4B illustrates an alternate embodiment in which a plate with a first edge long enough to form onehalf the circumference of the base of a reinforcing structure is used.
  • Two such base segments may, each be formed into a 180 of cylindrical arc and then assembled with twojoints as at 46 and 48 in FIG. 48 to form a completed reinforcing structure.
  • Joints 46'and 48 may be reinforced by the addition of a ring 36 or each joint may be welded.
  • FiG. 4C illustrates another alternative in which each piece of reinforcing structure forms one-third of the base circumference so that three pieces are used to form a completed structure.
  • the three segments are then assembled with three joints as at '50, 52, and 54 and may be reinforced by addition of ring 36.
  • Alternative embodiments as illustrated in FIGS. 48 and 4C may lend themselves more readily to single stroke forming in a punch press operation and thereby offer economies of manufacture.
  • a method of making a reinforcing structure for-a well swab body comprising:

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Pressure Vessels And Lids Thereof (AREA)
US00166171A 1971-07-26 1971-07-26 Method of making well pressure sealing cup reinforcing structure Expired - Lifetime US3722053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16617171A 1971-07-26 1971-07-26

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US3722053A true US3722053A (en) 1973-03-27

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US00166171A Expired - Lifetime US3722053A (en) 1971-07-26 1971-07-26 Method of making well pressure sealing cup reinforcing structure

Country Status (5)

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US (1) US3722053A (enrdf_load_stackoverflow)
AR (1) AR198172A1 (enrdf_load_stackoverflow)
CA (1) CA957614A (enrdf_load_stackoverflow)
DE (1) DE2230819A1 (enrdf_load_stackoverflow)
FR (1) FR2148436A1 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795037A (en) * 1970-05-05 1974-03-05 Int Computers Ltd Electrical connector devices
US3905318A (en) * 1974-03-04 1975-09-16 Illinois Tool Works Integral multifinger contact and method of making
US4081185A (en) * 1976-07-23 1978-03-28 Dresser Industries, Inc. Oil well swab cup
US4865246A (en) * 1987-12-18 1989-09-12 Kabushiki Kaisha Miyanaga Anchor bolt construction and method of manufacture
US4919579A (en) * 1987-08-24 1990-04-24 Kabushiki Kaisha Miyanaga Anchor construction and method of manufacture
DE4008216A1 (de) * 1990-03-15 1991-09-19 Grundfos Int Verfahren zur herstellung von fluidfuehrenden einrichtungen
US5553382A (en) * 1992-03-12 1996-09-10 Manhasset Specialty Co. Method for producing a shaft clutch component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405042A (en) * 1919-03-21 1922-01-31 Kraft Henry Phillip Method of making dust caps for tire valves
US1446487A (en) * 1923-02-27 Roller-bearing cage and method qe making same
US2619393A (en) * 1947-10-20 1952-11-25 Robert A Wilson Well swab
US3270697A (en) * 1962-10-02 1966-09-06 B & W Inc Method for forming a pipe centering device
US3365775A (en) * 1967-04-21 1968-01-30 Torrington Mfg Co Method of making bearing separators and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1446487A (en) * 1923-02-27 Roller-bearing cage and method qe making same
US1405042A (en) * 1919-03-21 1922-01-31 Kraft Henry Phillip Method of making dust caps for tire valves
US2619393A (en) * 1947-10-20 1952-11-25 Robert A Wilson Well swab
US3270697A (en) * 1962-10-02 1966-09-06 B & W Inc Method for forming a pipe centering device
US3365775A (en) * 1967-04-21 1968-01-30 Torrington Mfg Co Method of making bearing separators and the like

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795037A (en) * 1970-05-05 1974-03-05 Int Computers Ltd Electrical connector devices
US3905318A (en) * 1974-03-04 1975-09-16 Illinois Tool Works Integral multifinger contact and method of making
US4081185A (en) * 1976-07-23 1978-03-28 Dresser Industries, Inc. Oil well swab cup
US4919579A (en) * 1987-08-24 1990-04-24 Kabushiki Kaisha Miyanaga Anchor construction and method of manufacture
US4865246A (en) * 1987-12-18 1989-09-12 Kabushiki Kaisha Miyanaga Anchor bolt construction and method of manufacture
DE4008216A1 (de) * 1990-03-15 1991-09-19 Grundfos Int Verfahren zur herstellung von fluidfuehrenden einrichtungen
US5553382A (en) * 1992-03-12 1996-09-10 Manhasset Specialty Co. Method for producing a shaft clutch component

Also Published As

Publication number Publication date
DE2230819A1 (de) 1973-02-08
FR2148436A1 (enrdf_load_stackoverflow) 1973-03-23
CA957614A (en) 1974-11-12
AR198172A1 (es) 1974-06-07

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