Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2493556 A
Publication typeGrant
Publication dateJan 3, 1950
Filing dateDec 20, 1947
Priority dateDec 20, 1947
Publication numberUS 2493556 A, US 2493556A, US-A-2493556, US2493556 A, US2493556A
InventorsStone Albert L
Original AssigneeStandard Oil Dev Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Supporting and sealing member
US 2493556 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan 3, 1950 A. L. STONE I SUPPORTING AND SEALING MEMBER Filed Dec. 20, 1947 II III INVEN TOR.

FIG.- 2.

F l G.

. A it 2 J 2 w m 2 W7 W M w c M V.

A TORNEY Patented Jan. 3, 1950 UNITED "STATES PATENT OFFICE as-. Oil

Development Company, Elizabeth, N. 1., a cor Application December 20, 1941, Serial No. 792,892

poration of Delaware I 4 Claims.

The present invention is directed to an assembly for supporting a pipe and for sealin adjacent said supported pipe.

It is often desirable to support-a section of pipe and to provide a fluid-tight seal for an annular space around the supported'pipe. For ex ample, in the completion of a well producing oil and gas it is customary to provide a string of tubing through which the production may pass. This string of tubing is customarily arranged within a string of casing and the tubing may be supported from the casing and the annular space between the casing and the tubing sealed oil. In many wells it is customary to use a number of strings ofcasing arranged concentrically and to support each of the inner strings of easing from the outer string of casing with the annular spaces between the strings of casing packed off. The conventional procedure for supporting and sealing a string of tubing within a string of casing is to locate the tubing at the proper height in the well, then place a rubber-like-packer either above or below the set of slips; a Christmas tree is then attached above the sealing means and supporting means. If the packer is placed below the slips-the weight of the slips keeps it under compression. If the packer is placed above the slip it is customary to use a self-sealing packer.

Another operation where it is sometimes desirable to seal the annular space between an inner and outer string of pipe is when drilling wells with the rotary'method. Here when a blowout is feared it is desirable to seal the space between a string of easing cemented into the borehole and the drill stem while supporting the drill stem. At the present time it is conventional to provide a separate means for sealing oil, the space and another means for supporting the drill stem.

It is an object of the present invention to provide a means for supporting a section of pipe from a member while simultaneously sealing the space between the supported pipe and the'memhen other objects and advantages of the present invention may be seen from the following description taken in conjunction with the .drawing, in which Fig. 1 is an elevation partly in section'showin an embodiment of the present invention;

Fig. 2 is a view taken along line 11-11 of Fig. 1;

Fig. 3 is a fragmentary view showing a portion of the device of Fig. 1 with no load or a light load supported from the assembly;

Fig.4isaframentaryviewofthesameportions illustrated in Fig. 3 but showing the podthe space (on. zen-22) 2 tion assumed by the parts when a heavy load is supported; and

Fig. 5 is an, elevation partly in section showing another embodiment of the present invention.

Turning now specifically to the drawing, a supporting assembly A of a generally annular shape has an inner wall ll defining a central passage with an' upwardly facing shoulder 12 tapering upwardly and outwardly to define a seat for the slip assembly. Assembly A may be a casinghead or a tubing head orv may be the head of a blowout preventer. It will be understood that assembly A is shown only diagrammatically and if desired holes may bedrilled in the .fiange for attaching other equipment. It will be understood by a workman skilled in the art that any one of a number of designs or patterns of heads may be employed for assembly A.

A section of pipe I3 is supported from assembly A by means of assembly 13. Assembly B simultaneously serves .the function of supporting pipe is from assembly A and sealing the annular space between the outerwall of pipe l8 and the inner wall of assembly A.

Assembly B consists of a plurality of segments ll. Each segment defines an outer wedge-shaped wall I5 and inner wall l6 provided with a plurality of teeth l1. Segments ll are mounted radially in assembly B. A readily deformable or elastic structural material l8 bonds members it together to form a unitary structure having the form of a split annulus and in addition a layer thereof covers the upper surface. the lower surface, wedge surface [5 and the inner surface I6 of each slip member. In the drawing it will be seen that the teeth I! project through openings in deformable material i8 and engage frictionally with pipe I! to support it. It is preferred to shape the teeth ll in the form of a pyramid so that when they project through the coating of deformable material they will grip pipes i3 without disturbing the seal provided'by deformable material It.

The deformable or elastic material is may be a synthetic rubber or natural rubber which is capable of being firmly bonded to segments M by vulcanization. In the manufacture of the assembly B it is usually convenient to mold material ll .will be forced through the thin layer of rubber.

formable material l8 adjacent the particles deforms, and the supporting assembly A or A seats in the slip bowl to support the load and seal the space between the load and the slip bowl. It is to be emphasized that the assembly of the present invention proyides a means for supporting a pipe under abnormal as well as normal conditions and will at all times maintain a fluid-tight seal between the supported pipe and the supporting member.

The employment of readily deformable material between the segments enables the slip assembly to resist torque as well as to support the weight of a section of pipe. For example, if an attempt be made to rotate the pipe with respect to body A or A, the separate segments l4 will move slightly away from radial position causing an edge of each segment to bite into the pipe, thereby resisting the torque exterted on the pipe. It will be evident that when the assembly is resisting torque, it is adapted to maintain a fluidtight seal between the supported pipe and the" supporting member.

Another advantage of the present application is the relatively light weight of the assembly B or B. For example, if natural rubber is selected as a bonding material, it has a specific gravity of slightly more than 1.3 while steel has a specific gravity of 7.8. The arrangement of relatively thin flat segments of steel separated by the deformable material having a low specific gravity enables the construction of an assembly which is relatively light in weigh While I have disclosed a specific embodiment of the present invention it will be apparent to a workman skilled in the art that changes in the sizes, shape and proportions of the parts of said assembly may be made without departing from the scope of the invention.

Having fully described and illustrated a preferred embodiment of the present invention, what I desire to claim as new and useful and to secure by Letters Patent is:

1. An assembly for supporting pipe comprising, in combination, an annular member defining an upwardly facing supporting shoulder tapering upwardly and outwardly, a slip assembly adapted to cooperate therewith for holding a section of pipe comprising a plurality of radially arranged segments provided with inner toothed faces and outer wedge faces, readily deformable structural material securing a plurality of sections together in a fluid-tight assembly with readily deformable material covering at least a. portion of the inner face of each segment.

2. A device adapted for sealing and supporting pipe comprising, in combination, an annular shaped member defining a central passage with an upwardly facing shoulder adjacent thereto and sloping upwardly and outwardly away from -nular member having a portion of its inner surface defining a central opening and an upwardly facing shoulder joining thereto and defining a shoulder tapering upwardly and outwardly, a plurality of slip segments each segment defining an inner surface having a plurality of pyramid teeth and an outer wedge-shaped surface tapering upwardly and outwardly at the same angle as the shoulder of the annular member, readily deformable sturctural material bonded to each of said segments to form a unitary annular mass with a radial slot extending the length thereof and with at least a portion of said deformable material on the inner face of each slip member.

4. A slip assembly comprising, in combination, a plurality of slip segments each having an inner toothed face for engagement with a tubular member to be gripped and an outer wedge face for contact with a slip bowl and readily deformable structural material bonding a plurality of segments together radially to form a fluid-tight annulus with readily deformable material covering at least a portion of the inner face of each segment.

ALBERT L. STONE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Gailloux July 14, 1942

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1730622 *Jan 20, 1928Oct 8, 1929Struthers Wells Titusville CorFlexible pipe slip
US1914741 *Jan 19, 1932Jun 20, 1933Simon E DockstaderExpansion joint
US1923283 *Sep 26, 1932Aug 22, 1933Stokes John CSlip
US1942366 *Sep 20, 1930Jan 2, 1934Cecil Seamark Lewis MervynCasing head equipment
US2083089 *May 6, 1935Jun 8, 1937Rector Laurence LTubing head
US2252240 *Mar 16, 1939Aug 12, 1941Tschappat Sheridan PPacking device
US2264480 *Feb 28, 1938Dec 2, 1941Frank M OwenGripping device
US2287205 *Jan 27, 1939Jun 23, 1942Hydril Company Of CaliforniaPacking head
US2289696 *Oct 28, 1940Jul 14, 1942Cailloux John FTubing head
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2683045 *Mar 30, 1950Jul 6, 1954Cameron Iron Works IncPipe hanger and seal assembly
US2683046 *Mar 30, 1950Jul 6, 1954Cameron Iron Works IncPipe hanger and seal assembly
US2683047 *Jun 9, 1953Jul 6, 1954Cameron Iron Works IncPipe hanger and seal assembly
US2712455 *Oct 2, 1952Jul 5, 1955Nat Supply CoPressure actuated seal with relief means
US2733938 *Sep 17, 1953Feb 7, 1956 Pipe holding and packing slip
US2870794 *Jun 10, 1954Jan 27, 1959Thaxton Ellis BPipe plugs
US3051513 *Mar 11, 1959Aug 28, 1962Gray Tool CoHanger assembly and seal therefor
US3074746 *Nov 16, 1959Jan 22, 1963Harold ShamesJaw-type expansion adapter for fluid conduits
US3127198 *Oct 2, 1959Mar 31, 1964 figure
US3215010 *Jan 25, 1962Nov 2, 1965Montgomery Drilling CompanyTong die
US3287035 *Nov 1, 1965Nov 22, 1966Fmc CorpPipe hanger
US3368252 *Oct 10, 1966Feb 13, 1968Samuel W. Meek Sr.Slip-setting device for oil well elevators
US3534323 *Mar 6, 1969Oct 13, 1970Fargo Mfg Co IncTransformer tap for underground applications with pressure plate connection
US3614098 *Jul 8, 1969Oct 19, 1971Carr Byrle HFrictional-resistant-type exercising device
US3614140 *Aug 22, 1969Oct 19, 1971Minnesota Mining & MfgGripping device and method of making
US3852850 *Feb 26, 1973Dec 10, 1974Fargo Mfg Co IncCable gripping unit
US3907255 *Apr 4, 1974Sep 23, 1975Cable Climber Safety DevicesCable lock shoe
US4000549 *Jul 14, 1975Jan 4, 1977Eastman-Whipstock, Inc.Stabilizer
US5135266 *Jul 26, 1991Aug 4, 1992Abb Vetco Gray Inc.Casing slips and seal member
US5451084 *Sep 3, 1993Sep 19, 1995Weatherford/Lamb, Inc.Insert for use in slips
US5685574 *Feb 28, 1995Nov 11, 1997Dowell, A Division Of Schlumberger Technology CorporationSnap latch seal locator for sealingly latching tubing to a packer in a wellbore
US5971086 *Aug 15, 1997Oct 26, 1999Robert M. BeePipe gripping die
US6095242 *Aug 27, 1999Aug 1, 2000Fmc CorporationCasing hanger
US7231984Feb 26, 2004Jun 19, 2007Weatherford/Lamb, Inc.Gripping insert and method of gripping a tubular
US7510033 *Feb 17, 2006Mar 31, 2009Blohm + Voss Repair GmbhApparatus for vertically supporting pipes
DE19643196A1 *Oct 19, 1996Apr 23, 1998Andreas WernMethod of joining vehicle frame profile sections
EP0155397A2 *Dec 19, 1984Sep 25, 1985Werner HauffLead-in for a conduit, as cable, pipe or the like through a wall opening
EP0656986A1 *Sep 1, 1993Jun 14, 1995Weatherford LambInsert for use in slips.
EP0695900A1 *Jul 26, 1995Feb 7, 1996France TelecomSealed passage for telecommunication cables
EP1462700A2 *Mar 15, 2004Sep 29, 2004Poloplast GmbH & Co. KGCompressible flange
Classifications
U.S. Classification285/123.7, 403/281, 24/136.00B, 175/423, 175/424, 294/102.2, 285/123.14
International ClassificationE21B19/00, F16L5/02, F16L5/08, E21B19/10
Cooperative ClassificationF16L5/08, E21B19/10
European ClassificationE21B19/10, F16L5/08