|Publication number||US3818734 A|
|Publication date||Jun 25, 1974|
|Filing date||May 23, 1973|
|Priority date||May 23, 1973|
|Publication number||US 3818734 A, US 3818734A, US-A-3818734, US3818734 A, US3818734A|
|Original Assignee||Bateman J|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (151), Classifications (8) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Casing expanding mandrel
US 3818734 A
A mandrel for swaging and thereby expanding a collapsed oil well or similar casing to restore the same to its original size and form, the mandrel having a mandrel body formed to have successively smaller cylindrical portions in which are provided groups of conduit-swaging balls in circular arrangement around the axis of said body, the groups of balls, starting at the lower end of the mandrel body, being arranged in successively larger circles so the casing expansion size increases as the mandrel, on the end of a drilling string, is being rotated and lowered as permitted by the progressive expansion of the casing.
United States Patent [191 Bateman June 25, 1974 CASING EXPANDING MANDREL  Inventor: J. W. Bateman, 9245 Priscilla Ave.,
Downey, Calif. 90242 22 Filed: May 23, 1973 [Zl] Appl. No.: 363,245
 c References Cited UNITED STATES PATENTS 12/1907 Jones .l.72/75 12/1911 ll/l925 l/l926 8/1926 I ,56 l ,4 l 8 1,569,729 1,597.2 l 2 7 Primary Examiner-Lowell A. Larson 5 7] ABSTRACT A mandrel for swaging and thereby expanding a collapsed oil well or similar casing to restore the same to its original size and form, the mandrel having a mandrel body formed to have successively smaller cylindrical portions in which are provided groups of conduit-swaging balls in circular arrangement around the axis of said body, the groups of balls, starting at the lower end of the mandrel body, being arranged in successively larger circles so the casing expansion size increases as the mandrel, on the end of a drilling string, is being rotated and lowered as permitted by the progressive expansion of the casing.
5 Claims, 2 Drawing Figures,
CASING EXPANDING MANDREL BACKGROUND OF THE INVENTION 1. Field of the Invention:
Restoring well casing which had collaped bent and/or otherwise been deformed to enable efficient continued operation of a drilling string, as well as restoring a de formed casing to a smooth tubular form that offers minimum resistance to upward flow of a producing well.
2. Description of the Prior Art: 1
A professional investigation of the prior art turned up the following US. Pat. Nos; 1,010,954 1,594,114 2,183,921 3,201,827 3,339,388.
Of the above patents, all but Pat. No. 3,339,388 retain their swaging balls in grooves or seats by lips or other such overstanding peripheral portions of a mandrel so that more than half the mass 'of each ball is retained in the grooves or seats. Pat. No. 1,010,954 has such retaining lips and also provides a special means for removing the balls in successive grooves from the grooves in which they are confined.
The present stepped mandrel body, the seats in said body to receive one-half the mass of each swaging ball,
, and the rings or collars with raceways for retaining the balls in swaging position in their seats, are features of the present invention that have no teaching in the above listed prior art.
SUMMARY OF THE INVENTION A mandrel body adapted to be attached to the lower end of a drill string, the same, from its upper end towardits lower end, having successively reduced cylindrical portions in stepped form, theouter faces of said cylindrical portions having hemispherical cavities or seats in circular arrangement for hardened balls that have a rolling fitinsaid cavities. The mandrel body is fitted with ball-retaining rings that are provided on the opposite ends thereof with raceways with which said balls are engaged, the outer diametral sizes of the ballretaining rings or collars being smaller than a circle circumscribed around each respective circular arrangement of balls. The balls of each said arrangement having the portions thereof that protrude beyond the mentionedcavities and are adjacent thereto, engaged in the raceways of the ball-retaining ringson upper and lower portions of each circular arrangement of balls.
At the upper and lower ends of the mandrel body are provided similar retaining rings with the exception that the upper ring has one raceway in its lower portion, and
the lower ring has one raceway in its upper portion, the
latter ring being provided with a nose extension that guides the mandrel into and through a casing to be expanded.
An object of this invention is to provide a casingswaging mandrel, as above characterized, in which the sets of swaging balls are effectively retained in swaging condition in their cavities or seats.
Another object of the invention is to provide for a fixed location of the means that retain the ballretaining means so the balls have free rotation, as caused by friction engagement with a casing wall.
This invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily disconnected therefrom, economicalof manufacture, relatively simple, and of general superiority and serviceability.
The invention also comprises novel details of con struction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description, which is based on the accompanying drawing. However, said drawing merely shows, and the following specification merely describes, one embodiment of the present invention, which is given by way of illustration or example only.
In the drawing, like reference characters designate similar parts of the several views.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a foreshortened elevational view, with portions thereof in longitudinal section, of a casing expanding mandrel according to the present invention.
FIG. 2 is an enlarged elevational view, partly in vertical section, of the upper portion of the tool shown in FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT The present swagingand expanding tool comprises, generally, a mandrel body 5, a plurality of circularly arranged swaging balls 6 mounted on the outer face of said body, a plurality of rings or collars 7 on said body, one between each two circular arrangements of balls 6, a top ring 8 on said body engaged with the uppermost circular arrangement of balls, and a nose 9 connected to the lower end of the mandrel body and incorporating a retainer ring 10 and serves to lock together the assembly of the balls 6 and retainer rings 7, 8 and 10.
The mandrel body 5 is shown as an elongated member that is advantageously made of steel or other hard and wearresisting metal. The same is shown with an upper end 15 having a threaded box 16 for the pin on the end of a drilling string, with an enlargement l7 having a downwardly facing shoulder 18, and with a lower extension of successivelly smaller diameter cylindrical portions 19, 19a, 19b and 190, it being understood that the portion broken out between cylindrical portions 19a and 19b may have one or more intermediate successively smaller diameter cylindrical portions smaller than portion 19a and larger than portion 19b. It will be noted that each of said cylindrical portions terminates at its lower end in a downwardly facing annular shoulder 20.
Each of said cylindrical portions 19-19c is provided with at least one circular arrangement of preferably uniform cavities or seats 21 that are, at their maximum depth, hemispherical and each said seat being fitted with a ball 6 of polished steel or similarly hardened metal. The number of seats or of balls may vary provided at least three of the latter are used.
While two adjacent circular arrangements of cavities may be of the same hemispherical size and depth, of any two adjacent arrangements, the size and depth of the seats 21 in the smaller diameter cylindrical portion are smaller than the size and depth of the seats in the larger portion. The balls 6 in said smaller seats are also smaller, accordingly. Thus, the circumscribing circles around the successively smaller arrangements of balls are progressively smaller toward the lower end of the mandrel.
The balls 6 are retained in their seats 21 by a set of rings or collars 22 which, in' addition to the top ring 8, engage the respective balls 6 at their upper and lower sides, each said ring 22 in its upper and lower edges,
being provided with a raceway 23, and the top ring 8 with a similar raceway in its lower edge. lt will be seen that said raceways have outer lips that engage over the protruding portions of the balls and serve to retain them in their seats.
It will be noted that, to achieve the desired engagement of the balls 6 by the raceways 23 so as to have a non-binding engagement between the balls and the rings, the latter are provided with upwardly directed shoulders 24 that are so located between upper and lower edges of the respective rings that the raceways have the desired rolling engagement with the balls 6 when said shoulders 24 are engaged with the shoulders 20 of the mandrel body 5.
The lower end of the mandrel is tightened up by the nose 9, as in FIG. 7, the screws 25 of each ring being tightly set to lock the assembly.
It will be understood that the raceways may be formed on transverse curvatures that assure rolling clearance with the balls and allows for the balls to be inserted into their respective seats with the raceway thereabove. Thus suitable rolling clearance movement of the ball may be achieved,
The elements of the mandrel are assembled on the body from the bottom up in successive stages. After the top ring 8 is placed on the cylindrical portion 19 and against the shoulder 18, the first arrangement of balls 6 are dropped in their seats 21, the rolling clearance of the balls in their seats providing assemblage clearance for said balls to engage in the raceway 23 of said ring 8. Now the topmost ring 7 is fitted onto said cylindrical portion 19.
If a second arrangement of balls 6 is to be provided on the uppermost cylindrical portion 19 of the mandrel body, a second ring 7 one without a shoulder 24 may be positioned on the cylindrical portion 19. Thereafter, until the nose 9 is to be affixed to the tool, arrangements of balls 6 and rings or collars 7 are alternately fitted to the mandrel body 5. When the screws 25 are in place, the mandrel is completely assembled and is ready for insertion into a collapsed or otherwise distorted casing C. When the string on which the mandrel is attached is rotated and lowered, the successive arrangements of balls 6 expand and straighten said casing by swaging action by engagement with the inner face of said casing.
While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out the invention, the construction is, of course, subject to modification without departing from the spirit and scope of the invention.
Having thus described the invention, what is claimed and desired to be secured by Letters Patent is:
1. A casing expanding mandrel comprising:
an elongated mandrel body having an upper end for attachment to a drill string, said mandrel body having successively cylindrically smaller portions from said upper end downwardly, each said cylindrically smaller portion having a downwardly facing shoulder;
at least one set of circularly arranged seats that are, at most, of hemispherical depth in the cylindrical surface of each said body portion;
a set of swaging balls in each said set of seats, each ball protruding from its seat for at least half its spherical mass, and
a set of rings, one between each two adjacent sets of swaging balls, having upper and lower edge raceways engaged with said balls to retain the latter in their seats,
said rings having inner upwardly facing shoulders that have position-limiting engagement with the mentioned downwardly facing shoulders of the mandrel body.
2. A casing expanding mandrel according to claim 1 in which each of the mentioned raceways has peripheral lips that have the mentioned retaining engagement with the swaging balls.
3. A casing expanding mandrel according to claim 2 in which fastener means are provided to connect the rings to the mandrel body to retain the mentioned shoulder-to-shoulder engagement of the rings and the mandrel body.
4. A casing expanding mandrel according to claim 1 in which, at the lowermost end of the mandrel, is provided a nose member that is adapted for lead-in engagement of the mandrel with the casing.
5. A casing expanding mandrel according to claim 4 in which said nose member is formed as an integral part of the lowermost ring.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US872733 *||Oct 26, 1907||Dec 3, 1907||William L Jones||Rolling-machine.|
|US1010954 *||Apr 20, 1910||Dec 5, 1911||Chester Peter Adolph Rasmussen||Swage.|
|US1561418 *||Jan 26, 1924||Nov 10, 1925||Reed Roller Bit Co||Tool for straightening tubes|
|US1569729 *||Dec 27, 1923||Jan 12, 1926||Reed Roller Bit Co||Tool for straightening well casings|
|US1597212 *||Oct 13, 1924||Aug 24, 1926||Spengler Arthur F||Casing roller|
|US1638422 *||Aug 28, 1922||Aug 9, 1927||Peter O Donnell||Tube expander|
|US1794797 *||Apr 21, 1928||Mar 3, 1931||Rockwell Hugh M||Apparatus for sizing pistons|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4831855 *||Nov 3, 1987||May 23, 1989||Rems-Werk Christian Foll Und Sohne Gmbh & Co.||Flaring tool and apparatus equipped with a flaring tool|
|US5014779 *||Nov 22, 1988||May 14, 1991||Meling Konstantin V||Device for expanding pipes|
|US5946958 *||Aug 2, 1996||Sep 7, 1999||Seagate Technology, Inc.||Device for manufacturing a groove bearing|
|US6425444||Dec 22, 1999||Jul 30, 2002||Weatherford/Lamb, Inc.||Method and apparatus for downhole sealing|
|US6446323||Dec 22, 1999||Sep 10, 2002||Weatherford/Lamb, Inc.||Profile formation|
|US6457532||Dec 22, 1999||Oct 1, 2002||Weatherford/Lamb, Inc.||Procedures and equipment for profiling and jointing of pipes|
|US6457533||Jul 13, 1998||Oct 1, 2002||Weatherford/Lamb, Inc.||Downhole tubing|
|US6470966||May 7, 2001||Oct 29, 2002||Robert Lance Cook||Apparatus for forming wellbore casing|
|US6497289||Dec 3, 1999||Dec 24, 2002||Robert Lance Cook||Method of creating a casing in a borehole|
|US6510896||May 4, 2001||Jan 28, 2003||Weatherford/Lamb, Inc.||Apparatus and methods for utilizing expandable sand screen in wellbores|
|US6527049||Dec 22, 1999||Mar 4, 2003||Weatherford/Lamb, Inc.||Apparatus and method for isolating a section of tubing|
|US6543552||Dec 22, 1999||Apr 8, 2003||Weatherford/Lamb, Inc.||Method and apparatus for drilling and lining a wellbore|
|US6550539||Jun 20, 2001||Apr 22, 2003||Weatherford/Lamb, Inc.||Tie back and method for use with expandable tubulars|
|US6557640||Jun 7, 2000||May 6, 2003||Shell Oil Company||Lubrication and self-cleaning system for expansion mandrel|
|US6561227||May 9, 2001||May 13, 2003||Shell Oil Company||Wellbore casing|
|US6568471||Feb 24, 2000||May 27, 2003||Shell Oil Company||Liner hanger|
|US6575240||Feb 24, 2000||Jun 10, 2003||Shell Oil Company||System and method for driving pipe|
|US6575250||Nov 15, 2000||Jun 10, 2003||Shell Oil Company||Expanding a tubular element in a wellbore|
|US6578630||Apr 6, 2001||Jun 17, 2003||Weatherford/Lamb, Inc.||Apparatus and methods for expanding tubulars in a wellbore|
|US6585053||Sep 7, 2001||Jul 1, 2003||Weatherford/Lamb, Inc.||Method for creating a polished bore receptacle|
|US6591905||Aug 23, 2001||Jul 15, 2003||Weatherford/Lamb, Inc.||Orienting whipstock seat, and method for seating a whipstock|
|US6598678||Nov 13, 2000||Jul 29, 2003||Weatherford/Lamb, Inc.||Apparatus and methods for separating and joining tubulars in a wellbore|
|US6612481||Jul 30, 2001||Sep 2, 2003||Weatherford/Lamb, Inc.||Wellscreen|
|US6629567||Dec 7, 2001||Oct 7, 2003||Weatherford/Lamb, Inc.||Method and apparatus for expanding and separating tubulars in a wellbore|
|US6631759||Feb 12, 2002||Oct 14, 2003||Shell Oil Company||Apparatus for radially expanding a tubular member|
|US6631760||May 9, 2001||Oct 14, 2003||Shell Oil Company||Tie back liner for a well system|
|US6631769||Feb 15, 2002||Oct 14, 2003||Shell Oil Company||Method of operating an apparatus for radially expanding a tubular member|
|US6634431||Oct 3, 2001||Oct 21, 2003||Robert Lance Cook||Isolation of subterranean zones|
|US6640903||Mar 10, 2000||Nov 4, 2003||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US6655459||Jul 30, 2001||Dec 2, 2003||Weatherford/Lamb, Inc.||Completion apparatus and methods for use in wellbores|
|US6662876||Mar 27, 2001||Dec 16, 2003||Weatherford/Lamb, Inc.||Method and apparatus for downhole tubular expansion|
|US6668930||Mar 26, 2002||Dec 30, 2003||Weatherford/Lamb, Inc.||Method for installing an expandable coiled tubing patch|
|US6684947||Feb 20, 2002||Feb 3, 2004||Shell Oil Company||Apparatus for radially expanding a tubular member|
|US6688395||Nov 2, 2001||Feb 10, 2004||Weatherford/Lamb, Inc.||Expandable tubular having improved polished bore receptacle protection|
|US6688399||Sep 10, 2001||Feb 10, 2004||Weatherford/Lamb, Inc.||Expandable hanger and packer|
|US6688400||May 14, 2002||Feb 10, 2004||Weatherford/Lamb, Inc.||Downhole sealing|
|US6691777||Aug 9, 2001||Feb 17, 2004||Baker Hughes Incorporated||Self-lubricating swage|
|US6691789||Apr 25, 2002||Feb 17, 2004||Weatherford/Lamb, Inc.||Expandable hanger and packer|
|US6695063||Apr 15, 2002||Feb 24, 2004||Weatherford/Lamb, Inc.||Expansion assembly for a tubular expander tool, and method of tubular expansion|
|US6695065||Jun 19, 2002||Feb 24, 2004||Weatherford/Lamb, Inc.||Tubing expansion|
|US6698517||Nov 21, 2001||Mar 2, 2004||Weatherford/Lamb, Inc.||Apparatus, methods, and applications for expanding tubulars in a wellbore|
|US6702030||Aug 13, 2002||Mar 9, 2004||Weatherford/Lamb, Inc.||Procedures and equipment for profiling and jointing of pipes|
|US6705395||Feb 12, 2002||Mar 16, 2004||Shell Oil Company||Wellbore casing|
|US6708767||Oct 25, 2001||Mar 23, 2004||Weatherford/Lamb, Inc.||Downhole tubing|
|US6708769||May 4, 2001||Mar 23, 2004||Weatherford/Lamb, Inc.||Apparatus and methods for forming a lateral wellbore|
|US6712142||Aug 5, 2002||Mar 30, 2004||Weatherford/Lamb, Inc.||Apparatus and methods for expanding tubulars in a wellbore|
|US6712151 *||Apr 3, 2002||Mar 30, 2004||Weatherford/Lamb, Inc.||Tubing expansion|
|US6712154||Oct 18, 2001||Mar 30, 2004||Enventure Global Technology||Isolation of subterranean zones|
|US6722441||Dec 28, 2001||Apr 20, 2004||Weatherford/Lamb, Inc.||Threaded apparatus for selectively translating rotary expander tool downhole|
|US6725917||Sep 20, 2001||Apr 27, 2004||Weatherford/Lamb, Inc.||Downhole apparatus|
|US6725919||Sep 25, 2001||Apr 27, 2004||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US6739392||Sep 25, 2001||May 25, 2004||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US6742591||Feb 3, 2003||Jun 1, 2004||Weatherford/Lamb, Inc.||Downhole apparatus|
|US6742598||May 29, 2002||Jun 1, 2004||Weatherford/Lamb, Inc.||Method of expanding a sand screen|
|US6742606||Feb 11, 2003||Jun 1, 2004||Weatherford/Lamb, Inc.||Method and apparatus for drilling and lining a wellbore|
|US6745845||Dec 10, 2001||Jun 8, 2004||Shell Oil Company||Isolation of subterranean zones|
|US6752215||Oct 2, 2001||Jun 22, 2004||Weatherford/Lamb, Inc.||Method and apparatus for expanding and separating tubulars in a wellbore|
|US6752216||Aug 23, 2001||Jun 22, 2004||Weatherford/Lamb, Inc.||Expandable packer, and method for seating an expandable packer|
|US6758278||Sep 25, 2001||Jul 6, 2004||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US6782953||Mar 5, 2003||Aug 31, 2004||Weatherford/Lamb, Inc.||Tie back and method for use with expandable tubulars|
|US6805196||Nov 16, 2001||Oct 19, 2004||Weatherford/Lamb, Inc.||Expander|
|US6820687||Sep 3, 2002||Nov 23, 2004||Weatherford/Lamb, Inc.||Auto reversing expanding roller system|
|US6823937||Feb 10, 2000||Nov 30, 2004||Shell Oil Company||Wellhead|
|US6832649||Jan 17, 2003||Dec 21, 2004||Weatherford/Lamb, Inc.||Apparatus and methods for utilizing expandable sand screen in wellbores|
|US6851475||Mar 14, 2003||Feb 8, 2005||Weatherford/Lamb, Inc.||Apparatus and methods for separating and joining tubulars in a wellbore|
|US6857473||Mar 7, 2002||Feb 22, 2005||Shell Oil Company||Method of coupling a tubular member to a preexisting structure|
|US6877553||Sep 26, 2001||Apr 12, 2005||Weatherford/Lamb, Inc.||Profiled recess for instrumented expandable components|
|US6892819||Sep 25, 2001||May 17, 2005||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US6899181||Jan 22, 2003||May 31, 2005||Weatherford/Lamb, Inc.||Methods and apparatus for expanding a tubular within another tubular|
|US6902000||Mar 9, 2004||Jun 7, 2005||Weatherford/Lamb, Inc.||Apparatus and methods for expanding tubulars in a wellbore|
|US6923261||Dec 16, 2002||Aug 2, 2005||Weatherford/Lamb, Inc.||Apparatus and method for expanding a tubular|
|US6932161||Sep 26, 2001||Aug 23, 2005||Weatherford/Lams, Inc.||Profiled encapsulation for use with instrumented expandable tubular completions|
|US6935429||Jan 31, 2003||Aug 30, 2005||Weatherford/Lamb, Inc.||Flash welding process for field joining of tubulars for expandable applications|
|US6966370||Feb 20, 2002||Nov 22, 2005||Shell Oil Company||Apparatus for actuating an annular piston|
|US6968618||May 12, 2003||Nov 29, 2005||Shell Oil Company||Expandable connector|
|US6968896||Jun 11, 2003||Nov 29, 2005||Weatherford/Lamb, Inc.||Orienting whipstock seat, and method for seating a whipstock|
|US6971450||Oct 8, 2003||Dec 6, 2005||Weatherford/Lamb, Inc.||Completion apparatus and methods for use in wellbores|
|US6976536||Mar 22, 2004||Dec 20, 2005||Weatherford/Lamb, Inc.||Tubing expansion|
|US6976539||Sep 11, 2003||Dec 20, 2005||Weatherford/Lamb, Inc.||Tubing anchor|
|US6976541||Jan 22, 2003||Dec 20, 2005||Shell Oil Company||Liner hanger with sliding sleeve valve|
|US6997266||Feb 17, 2004||Feb 14, 2006||Weatherford/Lamb, Inc.||Expandable hanger and packer|
|US7004257||Nov 29, 2004||Feb 28, 2006||Weatherford/Lamb, Inc||Apparatus and methods for separating and joining tubulars in a wellbore|
|US7011161||Oct 1, 2002||Mar 14, 2006||Shell Oil Company||Structural support|
|US7032679||Aug 25, 2004||Apr 25, 2006||Weatherford/Lamb, Inc.||Tie back and method for use with expandable tubulars|
|US7036582||Oct 1, 2002||May 2, 2006||Shell Oil Company||Expansion cone for radially expanding tubular members|
|US7040396||Feb 20, 2002||May 9, 2006||Shell Oil Company||Apparatus for releasably coupling two elements|
|US7044218||Oct 1, 2002||May 16, 2006||Shell Oil Company||Apparatus for radially expanding tubular members|
|US7044221||Feb 20, 2002||May 16, 2006||Shell Oil Company||Apparatus for coupling a tubular member to a preexisting structure|
|US7048062||Oct 1, 2002||May 23, 2006||Shell Oil Company||Method of selecting tubular members|
|US7048063||Apr 12, 2005||May 23, 2006||Weatherford/Lamb, Inc.||Profiled recess for instrumented expandable components|
|US7055597||Dec 16, 2003||Jun 6, 2006||Weatherford/Lamb, Inc.||Method and apparatus for downhole tubular expansion|
|US7055608||Apr 18, 2003||Jun 6, 2006||Shell Oil Company||Forming a wellbore casing while simultaneously drilling a wellbore|
|US7063142||Feb 15, 2002||Jun 20, 2006||Shell Oil Company||Method of applying an axial force to an expansion cone|
|US7063149||Feb 2, 2004||Jun 20, 2006||Weatherford/Lamb, Inc.||Tubing expansion with an apparatus that cycles between different diameter configurations|
|US7073583||Dec 21, 2001||Jul 11, 2006||E2Tech Limited||Method and apparatus for expanding tubing downhole|
|US7077213||Oct 1, 2002||Jul 18, 2006||Shell Oil Company||Expansion cone for radially expanding tubular members|
|US7086477||Sep 10, 2003||Aug 8, 2006||Weatherford/Lamb, Inc.||Tubing expansion tool|
|US7086478||Mar 17, 2005||Aug 8, 2006||Weatherford/Lamb, Inc.||Apparatus and methods for expanding tubulars in a wellbore|
|US7090025||Dec 1, 2003||Aug 15, 2006||Weatherford/Lamb, Inc.||Methods and apparatus for reforming and expanding tubulars in a wellbore|
|US7100684||Dec 18, 2002||Sep 5, 2006||Enventure Global Technology||Liner hanger with standoffs|
|US7100685||Jun 13, 2003||Sep 5, 2006||Enventure Global Technology||Mono-diameter wellbore casing|
|US7108061||Oct 25, 2002||Sep 19, 2006||Shell Oil Company||Expander for a tapered liner with a shoe|
|US7108072||Mar 5, 2003||Sep 19, 2006||Shell Oil Company||Lubrication and self-cleaning system for expansion mandrel|
|US7121351||Mar 24, 2004||Oct 17, 2006||Weatherford/Lamb, Inc.||Apparatus and method for completing a wellbore|
|US7121352||Jul 14, 2003||Oct 17, 2006||Enventure Global Technology||Isolation of subterranean zones|
|US7124821||Jul 18, 2005||Oct 24, 2006||Weatherford/Lamb, Inc.||Apparatus and method for expanding a tubular|
|US7124826||Dec 31, 2003||Oct 24, 2006||Weatherford/Lamb, Inc.||Procedures and equipment for profiling and jointing of pipes|
|US7152684||Dec 20, 2002||Dec 26, 2006||Weatherford/Lamb, Inc.||Tubular hanger and method of lining a drilled bore|
|US7156179||May 17, 2004||Jan 2, 2007||Weatherford/Lamb, Inc.||Expandable tubulars|
|US7159665||Jul 19, 2002||Jan 9, 2007||Shell Oil Company||Wellbore casing|
|US7163057||Dec 10, 2004||Jan 16, 2007||Weatherford/Lamb, Inc.||Completion apparatus and methods for use in hydrocarbon wells|
|US7168497||Dec 30, 2003||Jan 30, 2007||Weatherford/Lamb, Inc.||Downhole sealing|
|US7168606||Feb 6, 2003||Jan 30, 2007||Weatherford/Lamb, Inc.||Method of mitigating inner diameter reduction of welded joints|
|US7172024||Mar 31, 2003||Feb 6, 2007||Shell Oil Company||Mono-diameter wellbore casing|
|US7172027||Jun 10, 2003||Feb 6, 2007||Weatherford/Lamb, Inc.||Expanding tubing|
|US7174764||Aug 12, 2002||Feb 13, 2007||E2 Tech Limited||Apparatus for and a method of expanding tubulars|
|US7182141||Oct 8, 2002||Feb 27, 2007||Weatherford/Lamb, Inc.||Expander tool for downhole use|
|US7182142||Apr 26, 2004||Feb 27, 2007||Weatherford/Lamb, Inc.||Downhole apparatus|
|US7195085||Jun 27, 2001||Mar 27, 2007||Weatherford/Lamb, Inc.||Drill bit|
|US7267175||Mar 17, 2005||Sep 11, 2007||Weatherford/Lamb, Inc.||Apparatus and methods for forming a lateral wellbore|
|US7308944||Oct 7, 2003||Dec 18, 2007||Weatherford/Lamb, Inc.||Expander tool for use in a wellbore|
|US7350585||Mar 25, 2004||Apr 1, 2008||Weatherford/Lamb, Inc.||Hydraulically assisted tubing expansion|
|US7367404||Nov 16, 2004||May 6, 2008||Weatherford/Lamb, Inc.||Tubing seal|
|US7373990||Jun 8, 2004||May 20, 2008||Weatherford/Lamb, Inc.||Method and apparatus for expanding and separating tubulars in a wellbore|
|US7387169||Dec 29, 2006||Jun 17, 2008||Weatherford/Lamb, Inc.||Expandable tubulars|
|US7395857||Jul 7, 2004||Jul 8, 2008||Weatherford/Lamb, Inc.||Methods and apparatus for expanding tubing with an expansion tool and a cone|
|US7475735||Dec 22, 2006||Jan 13, 2009||Weatherford/Lamb, Inc.||Tubular hanger and method of lining a drilled bore|
|US7503396||Feb 15, 2006||Mar 17, 2009||Weatherford/Lamb||Method and apparatus for expanding tubulars in a wellbore|
|US7520328||Feb 5, 2008||Apr 21, 2009||Weatherford/Lamb, Inc.||Completion apparatus and methods for use in hydrocarbon wells|
|US7730965||Jan 30, 2006||Jun 8, 2010||Weatherford/Lamb, Inc.||Retractable joint and cementing shoe for use in completing a wellbore|
|US7798225||Aug 4, 2006||Sep 21, 2010||Weatherford/Lamb, Inc.||Apparatus and methods for creation of down hole annular barrier|
|US7921925||May 12, 2008||Apr 12, 2011||Weatherford/Lamb, Inc.||Method and apparatus for expanding and separating tubulars in a wellbore|
|US7938201||Feb 28, 2006||May 10, 2011||Weatherford/Lamb, Inc.||Deep water drilling with casing|
|US7980107 *||Sep 29, 2008||Jul 19, 2011||Xiaoyong Li||Variable diameter pipe expander|
|US8117883||Mar 5, 2010||Feb 21, 2012||Weatherford/Lamb, Inc.||Tubing expansion|
|US8261842||Dec 8, 2009||Sep 11, 2012||Halliburton Energy Services, Inc.||Expandable wellbore liner system|
|US8746028||Mar 25, 2004||Jun 10, 2014||Weatherford/Lamb, Inc.||Tubing expansion|
|US8925629 *||Jun 30, 2010||Jan 6, 2015||Reelwell As||Down hole well tool with expansion tool|
|US8925630 *||Jul 2, 2010||Jan 6, 2015||Reelwell As||Down hole well tool with rolling means|
|US20120090855 *||Jun 30, 2010||Apr 19, 2012||Reelwell As||Down hole well tool with expansion tool|
|US20120103596 *||Jul 2, 2010||May 3, 2012||Reelwell As||down hole well tool with rolling means|
|US20130213106 *||Feb 22, 2013||Aug 22, 2013||Sugino Machine Limited||Dimple-forming burnishing tool and dimple-forming burnishing method|
|US20130220641 *||Nov 9, 2012||Aug 29, 2013||Halliburton Energy Services, Inc.||Expandable Conical Tubing Run Through Production Tubing and Into Open Hole|
|USRE42733 *||Apr 20, 2006||Sep 27, 2011||Halliburton Energy Services, Inc.||Wear-resistant, variable diameter expansion tool and expansion methods|
|CN101942979A *||Sep 1, 2010||Jan 12, 2011||大港油田集团有限责任公司;阜新驰宇石油机械有限公司||Anchoring ball type casing truing unit and truing method thereof|
|CN101942979B||Sep 1, 2010||Jul 10, 2013||大港油田集团有限责任公司||Anchoring ball type casing truing unit and truing method thereof|
|WO1990005831A1 *||Nov 22, 1988||May 31, 1990||Tatarsky Gni I||Pipe roller-expanding device|
|WO1998005444A1 *||Feb 6, 1997||Feb 12, 1998||Seagate Technology||Device for manufacturing a groove bearing|
|WO2000037766A2 *||Dec 21, 1999||Jun 29, 2000||Astec Dev Ltd||Procedures and equipment for profiling and jointing of pipes|
|WO2004001182A2 *||Jun 18, 2003||Dec 31, 2003||Halliburton Energy Serv Inc||Internal support apparatus for downhole tubular structures|
|WO2004083594A2 *||Mar 15, 2004||Sep 30, 2004||Costa Scott||Apparatus and method radially expanding a wellbore casing using an expansion mandrel and a rotary expansion tool|