Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Búsqueda avanzada de patentes | Historial web | Iniciar sesión

Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US394832129 Ago 19746 Abr 1976Gearhart-Owen Industries, Inc.Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same
US556042627 Mar 19951 Oct 1996Baker Hughes IncorporatedDownhole tool actuating mechanism
US606553614 Sep 199823 May 2000Weatherford/Lamb, Inc.Apparatus for setting a liner in a well casing
US60987178 Oct 19978 Ago 2000Formlock, Inc.Method and apparatus for hanging tubulars in wells
US61128187 May 19985 Sep 2000Petroline Wellsystems LimitedDownhole setting tool for an expandable tubing
US61705711 Mar 19999 Ene 2001Schlumberger Technology CorporationApparatus for establishing branch wells at a node of a parent well
US625733128 Jul 199910 Jul 2001Atlantic Richfield CompanyDownhole setting tool
US632514822 Dic 19994 Dic 2001Weatherford/Lamb, Inc.Tools and methods for use with expandable tubulars
US632811315 Nov 199911 Dic 2001Shell Oil CompanyIsolation of subterranean zones
US641256527 Jul 20002 Jul 2002Halliburton Energy Services, Inc.Expandable screen jacket and methods of using same
US64158634 Mar 19999 Jul 2002Bestline Liner System, Inc.Apparatus and method for hanging tubulars in wells
US642544422 Dic 199930 Jul 2002Weatherford/Lamb, Inc.Method and apparatus for downhole sealing
US644632322 Dic 199910 Sep 2002Weatherford/Lamb, Inc.Profile formation
US64540138 Jun 200024 Sep 2002Weatherford/Lamb, Inc.Expandable downhole tubing
US645753319 Dic 20001 Oct 2002Weatherford/Lamb, Inc.Downhole tubing
US64709667 May 200129 Oct 2002Apparatus for forming wellbore casing
US649426116 Ago 200017 Dic 2002Halliburton Energy Services, Inc.Apparatus and methods for perforating a subterranean formation
US64972893 Dic 199924 Dic 2002Method of creating a casing in a borehole
US651358813 Sep 20004 Feb 2003Weatherford/Lamb, Inc.Downhole apparatus
US652704922 Dic 19994 Mar 2003Weatherford/Lamb, Inc.Apparatus and method for isolating a section of tubing
US653043122 Jun 200011 Mar 2003Halliburton Energy Services, Inc.Screen jacket assembly connection and methods of using same
US654354527 Oct 20008 Abr 2003Halliburton Energy Services, Inc.Expandable sand control device and specialized completion system and method
US654355222 Dic 19998 Abr 2003Weatherford/Lamb, Inc.Method and apparatus for drilling and lining a wellbore
US65576407 Jun 20006 May 2003Shell Oil CompanyLubrication and self-cleaning system for expansion mandrel
US65612279 May 200113 May 2003Shell Oil CompanyWellbore casing
US656847124 Feb 200027 May 2003Shell Oil CompanyLiner hanger
US656847222 Dic 200027 May 2003Halliburton Energy Services, Inc.Method and apparatus for washing a borehole ahead of screen expansion
US657524024 Feb 200010 Jun 2003Shell Oil CompanySystem and method for driving pipe
US657525015 Nov 200010 Jun 2003Shell Oil CompanyExpanding a tubular element in a wellbore
US65850537 Sep 20011 Jul 2003Weatherford/Lamb, Inc.Method for creating a polished bore receptacle
US659190523 Ago 200115 Jul 2003Weatherford/Lamb, Inc.Orienting whipstock seat, and method for seating a whipstock
US659867813 Nov 200029 Jul 2003Weatherford/Lamb, Inc.Apparatus and methods for separating and joining tubulars in a wellbore
US660476326 Abr 200012 Ago 2003Shell Oil CompanyExpandable connector
US662278930 Nov 200123 Sep 2003TIW CorporationDownhole tubular patch, tubular expander and method
US66295677 Dic 20017 Oct 2003Weatherford/Lamb, Inc.Method and apparatus for expanding and separating tubulars in a wellbore
US663175912 Feb 200214 Oct 2003Shell Oil CompanyApparatus for radially expanding a tubular member
US66317609 May 200114 Oct 2003Shell Oil CompanyTie back liner for a well system
US663176915 Feb 200214 Oct 2003Shell Oil CompanyMethod of operating an apparatus for radially expanding a tubular member
US66344313 Oct 200121 Oct 2003Isolation of subterranean zones
US664090310 Mar 20004 Nov 2003Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US668494720 Feb 20023 Feb 2004Shell Oil CompanyApparatus for radially expanding a tubular member
US66883952 Nov 200110 Feb 2004Weatherford/Lamb, Inc.Expandable tubular having improved polished bore receptacle protection
US668839910 Sep 200110 Feb 2004Weatherford/Lamb, Inc.Expandable hanger and packer
US668840014 May 200210 Feb 2004Weatherford/Lamb, Inc.Downhole sealing
US669178925 Abr 200217 Feb 2004Weatherford/Lamb, Inc.Expandable hanger and packer
US669506519 Jun 200224 Feb 2004Weatherford/Lamb, Inc.Tubing expansion
US670202922 Dic 19999 Mar 2004Weatherford/Lamb, Inc.Tubing anchor
US670539512 Feb 200216 Mar 2004Shell Oil CompanyWellbore casing
US67087694 May 200123 Mar 2004Weatherford/Lamb, Inc.Apparatus and methods for forming a lateral wellbore
US671215418 Oct 200130 Mar 2004Enventure Global TechnologyIsolation of subterranean zones
US672244128 Dic 200120 Abr 2004Weatherford/Lamb, Inc.Threaded apparatus for selectively translating rotary expander tool downhole
US672591720 Sep 200127 Abr 2004Weatherford/Lamb, Inc.Downhole apparatus
US672591925 Sep 200127 Abr 2004Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US673280629 Ene 200211 May 2004Weatherford/Lamb, Inc.One trip expansion method and apparatus for use in a wellbore
US673939225 Sep 200125 May 2004Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US67425913 Feb 20031 Jun 2004Weatherford/Lamb, Inc.Downhole apparatus
US674260611 Feb 20031 Jun 2004Weatherford/Lamb, Inc.Method and apparatus for drilling and lining a wellbore
US674584510 Dic 20018 Jun 2004Shell Oil CompanyIsolation of subterranean zones
US67458468 Jul 20028 Jun 2004E2 Tech LimitedExpandable downhole tubing
US67522152 Oct 200122 Jun 2004Weatherford/Lamb, Inc.Method and apparatus for expanding and separating tubulars in a wellbore
US675221623 Ago 200122 Jun 2004Weatherford/Lamb, Inc.Expandable packer, and method for seating an expandable packer
US675524931 Ene 200329 Jun 2004Halliburton Energy Services, Inc.Apparatus and method for perforating a subterranean formation
US675827825 Sep 20016 Jul 2004Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US676389318 Jul 200320 Jul 2004TIW CorporationDownhole tubular patch, tubular expander and method
US676686215 Ene 200327 Jul 2004Halliburton Energy Services, Inc.Expandable sand control device and specialized completion system and method
US67829535 Mar 200331 Ago 2004Weatherford/Lamb, Inc.Tie back and method for use with expandable tubulars
US67896228 Jul 200214 Sep 2004EZ Tech LimitedApparatus for and a method of anchoring an expandable conduit
US679963513 Ago 20025 Oct 2004Halliburton Energy Services, Inc.Method of cementing a tubular string in a wellbore
US68141438 Ago 20029 Nov 2004TIW CorporationDownhole tubular patch, tubular expander and method
US68206873 Sep 200223 Nov 2004Weatherford/Lamb, Inc.Auto reversing expanding roller system
US682393710 Feb 200030 Nov 2004Shell Oil CompanyWellhead
US685147514 Mar 20038 Feb 2005Weatherford/Lamb, Inc.Apparatus and methods for separating and joining tubulars in a wellbore
US68574737 Mar 200222 Feb 2005Shell Oil CompanyMethod of coupling a tubular member to a preexisting structure
US687755326 Sep 200112 Abr 2005Weatherford/Lamb, Inc.Profiled recess for instrumented expandable components
US689281925 Sep 200117 May 2005Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US689918122 Ene 200331 May 2005Weatherford/Lamb, Inc.Methods and apparatus for expanding a tubular within another tubular
US69209359 Ago 200226 Jul 2005Weatherford/Lamb, Inc.Expandable downhole tubing
US692326116 Dic 20022 Ago 2005Weatherford/Lamb, Inc.Apparatus and method for expanding a tubular
US693216126 Sep 200123 Ago 2005Weatherford/Lams, Inc.Profiled encapsulation for use with instrumented expandable tubular completions
US695975931 Mar 20041 Nov 2005Baker Hughes IncorporatedExpandable packer with anchoring feature
US696637020 Feb 200222 Nov 2005Shell Oil CompanyApparatus for actuating an annular piston
US696861812 May 200329 Nov 2005Shell Oil CompanyExpandable connector
US696889611 Jun 200329 Nov 2005Weatherford/Lamb, Inc.Orienting whipstock seat, and method for seating a whipstock
US697653911 Sep 200320 Dic 2005Weatherford/Lamb, Inc.Tubing anchor
US697654122 Ene 200320 Dic 2005Shell Oil CompanyLiner hanger with sliding sleeve valve
US698639031 Mar 200417 Ene 2006Baker Hughes IncorporatedExpandable packer with anchoring feature
US699726617 Feb 200414 Feb 2006Weatherford/Lamb, Inc.Expandable hanger and packer
US700425729 Nov 200428 Feb 2006Weatherford/Lamb, IncApparatus and methods for separating and joining tubulars in a wellbore
US70111611 Oct 200214 Mar 2006Shell Oil CompanyStructural support
US703267925 Ago 200425 Abr 2006Weatherford/Lamb, Inc.Tie back and method for use with expandable tubulars
US70365821 Oct 20022 May 2006Shell Oil CompanyExpansion cone for radially expanding tubular members
US704039620 Feb 20029 May 2006Shell Oil CompanyApparatus for releasably coupling two elements
US70442181 Oct 200216 May 2006Shell Oil CompanyApparatus for radially expanding tubular members
US704422120 Feb 200216 May 2006Shell Oil CompanyApparatus for coupling a tubular member to a preexisting structure
US70442316 Jun 200316 May 2006Baker Hughes IncorporatedExpandable packer with anchoring feature
US70480502 Oct 200323 May 2006Weatherford/Lamb, Inc.Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US70480621 Oct 200223 May 2006Shell Oil CompanyMethod of selecting tubular members
US704806312 Abr 200523 May 2006Weatherford/Lamb, Inc.Profiled recess for instrumented expandable components
US704806731 Oct 200023 May 2006Shell Oil CompanyWellbore casing repair
US705180521 Nov 200230 May 2006Baker Hughes IncorporatedExpandable packer with anchoring feature
US705560818 Abr 20036 Jun 2006Shell Oil CompanyForming a wellbore casing while simultaneously drilling a wellbore
US706314215 Feb 200220 Jun 2006Shell Oil CompanyMethod of applying an axial force to an expansion cone
US70631492 Feb 200420 Jun 2006Weatherford/Lamb, Inc.Tubing expansion with an apparatus that cycles between different diameter configurations
US707721129 Ene 200418 Jul 2006Shell Oil CompanyMethod of creating a casing in a borehole
US70772131 Oct 200218 Jul 2006Shell Oil CompanyExpansion cone for radially expanding tubular members
US70864794 Oct 20048 Ago 2006Halliburton Energy Services, Inc.Expanding well tools
US709365324 Oct 200322 Ago 2006Weatherford/LambDownhole filter
US710068418 Dic 20025 Sep 2006Enventure Global TechnologyLiner hanger with standoffs
US710068513 Jun 20035 Sep 2006Enventure Global TechnologyMono-diameter wellbore casing
US710806125 Oct 200219 Sep 2006Shell Oil CompanyExpander for a tapered liner with a shoe
US71080725 Mar 200319 Sep 2006Shell Oil CompanyLubrication and self-cleaning system for expansion mandrel
US71080833 Dic 200319 Sep 2006Halliburton Energy Services, Inc.Apparatus and method for completing an interval of a wellbore while drilling
US71145596 Feb 20033 Oct 2006Baker Hughes IncorporatedMethod of repair of collapsed or damaged tubulars downhole
US711794917 Mar 200510 Oct 2006Baker Hughes IncorporatedExpandable packer with anchoring feature
US711795725 May 200410 Oct 2006Weatherford/Lamb, Inc.Methods for drilling and lining a wellbore
US71213371 Jun 200517 Oct 2006Shell Oil CompanyApparatus for expanding a tubular member
US712135124 Mar 200417 Oct 2006Weatherford/Lamb, Inc.Apparatus and method for completing a wellbore
US712135214 Jul 200317 Oct 2006Enventure Global TechnologyIsolation of subterranean zones
US712482118 Jul 200524 Oct 2006Weatherford/Lamb, Inc.Apparatus and method for expanding a tubular
US712482322 Feb 200524 Oct 2006e2 Tech LimitedApparatus for and method of anchoring a first conduit to a second conduit
US712482923 Abr 200424 Oct 2006TIW CorporationTubular expansion fluid production assembly and method
US712483026 Jul 200524 Oct 2006Weatherford/Lamb, Inc.Methods of placing expandable downhole tubing in a wellbore
US71281465 Feb 200431 Oct 2006Baker Hughes IncorporatedCompliant swage
US713450417 Sep 200414 Nov 2006Baker Hughes IncorporatedExpandable packer with anchoring feature
US71467027 Mar 200512 Dic 2006Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US714705313 Ago 200412 Dic 2006Shell Oil CompanyWellhead
US715966519 Jul 20029 Ene 2007Shell Oil CompanyWellbore casing
US71596672 Feb 20049 Ene 2007Shell Oil CompanyMethod of coupling a tubular member to a preexisting structure
US716849626 Jun 200230 Ene 2007Eventure Global TechnologyLiner hanger
US716849730 Dic 200330 Ene 2007Weatherford/Lamb, Inc.Downhole sealing
US716849910 Sep 200430 Ene 2007Shell Oil CompanyRadial expansion of tubular members
US71720197 Mar 20056 Feb 2007Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US71720213 Nov 20046 Feb 2007Shell Oil CompanyLiner hanger with sliding sleeve valve
US717202431 Mar 20036 Feb 2007Shell Oil CompanyMono-diameter wellbore casing
US717202710 Jun 20036 Feb 2007Weatherford/Lamb, Inc.Expanding tubing
US717476412 Ago 200213 Feb 2007E2 Tech LimitedApparatus for and a method of expanding tubulars
US717496422 Jul 200313 Feb 2007Shell Oil CompanyWellhead with radially expanded tubulars
US71821418 Oct 200227 Feb 2007Weatherford/Lamb, Inc.Expander tool for downhole use
US718214226 Abr 200427 Feb 2007Weatherford/Lamb, Inc.Downhole apparatus
US718868727 Jul 200413 Mar 2007Weatherford/Lamb, Inc.Downhole filter
US71950612 Jun 200527 Mar 2007Shell Oil CompanyApparatus for expanding a tubular member
US719506413 Ago 200327 Mar 2007Enventure Global TechnologyMono-diameter wellbore casing
US71950731 May 200327 Mar 2007Baker Hughes IncorporatedExpandable tieback
US71981002 Jun 20053 Abr 2007Shell Oil CompanyApparatus for expanding a tubular member
US72012231 Mar 200510 Abr 2007Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US72040074 Mar 200517 Abr 2007Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US72167011 Jun 200515 May 2007Shell Oil CompanyApparatus for expanding a tubular member
US722266923 Mar 200529 May 2007Baker Hughes IncorporatedMethod of repair of collapsed or damaged tubulars downhole
US723198510 Sep 200419 Jun 2007Shell Oil CompanyRadial expansion of tubular members
US723453119 Sep 200226 Jun 2007Enventure Global Technology, LLCMono-diameter wellbore casing
US724072825 Sep 200110 Jul 2007Shell Oil CompanyExpandable tubulars with a radial passage and wall portions with different wall thicknesses
US724072930 Ene 200410 Jul 2007Shell Oil CompanyApparatus for expanding a tubular member
US724666727 Sep 200424 Jul 2007Shell Oil CompanyRadial expansion of tubular members
US725816827 Jul 200121 Ago 2007Enventure Global Technology L.L.C.Liner hanger with slip joint sealing members and method of use
US72640671 Oct 20044 Sep 2007Weatherford/Lamb, Inc.Method of drilling and completing multiple wellbores inside a single caisson
US726717517 Mar 200511 Sep 2007Weatherford/Lamb, Inc.Apparatus and methods for forming a lateral wellbore
US727560128 Sep 20042 Oct 2007Shell Oil CompanyRadial expansion of tubular members
US729060510 Dic 20026 Nov 2007Enventure Global TechnologySeal receptacle using expandable liner hanger
US729061626 Jun 20026 Nov 2007Enventure Global Technology, L.L.C.Liner hanger
US729988127 Sep 200427 Nov 2007Shell Oil CompanyRadial expansion of tubular members
US730302227 Abr 20044 Dic 2007Weatherford/Lamb, Inc.Wired casing
US73087554 Mar 200518 Dic 2007Shell Oil CompanyApparatus for forming a mono-diameter wellbore casing
US73089447 Oct 200318 Dic 2007Weatherford/Lamb, Inc.Expander tool for use in a wellbore
US73111489 Feb 200425 Dic 2007Weatherford/Lamb, Inc.Methods and apparatus for wellbore construction and completion
US732560228 Sep 20065 Feb 2008Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US73346502 Feb 200426 Feb 2008Weatherford/Lamb, Inc.Apparatus and methods for drilling a wellbore using casing
US735056314 Ago 20021 Abr 2008Enventure Global Technology, L.L.C.System for lining a wellbore casing
US735056420 May 20051 Abr 2008Enventure Global Technology, L.L.C.Mono-diameter wellbore casing
US735718823 Feb 200015 Abr 2008Shell Oil CompanyMono-diameter wellbore casing
US735719028 Sep 200415 Abr 2008Shell Oil CompanyRadial expansion of tubular members
US736059117 Abr 200322 Abr 2008Enventure Global Technology, LLCSystem for radially expanding a tubular member
US73605945 Mar 200422 Abr 2008Weatherford/Lamb, Inc.Drilling with casing latch
US73636902 Mar 200529 Abr 2008Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US73636913 Mar 200529 Abr 2008Shell Oil CompanyMethod and apparatus for forming a mono-diameter wellbore casing
US736398412 May 200329 Abr 2008Enventure Global Technology, LLCSystem for radially expanding a tubular member
US736738916 Jun 20046 May 2008Weatherford/Lamb, Inc.Tubing expansion
US73739908 Jun 200420 May 2008Weatherford/Lamb, Inc.Method and apparatus for expanding and separating tubulars in a wellbore
US737732618 Ago 200327 May 2008Enventure Global Technology, L.L.C.Magnetic impulse applied sleeve method of forming a wellbore casing
US738388912 Nov 200210 Jun 2008Enventure Global Technology, LLCMono diameter wellbore casing
US738716929 Dic 200617 Jun 2008Weatherford/Lamb, Inc.Expandable tubulars
US73988325 May 200315 Jul 2008Enventure Global Technology, LLCMono-diameter wellbore casing
US740444418 Ago 200329 Jul 2008Enventure Global TechnologyProtective sleeve for expandable tubulars
US741000020 May 200512 Ago 2008Enventure Global Technology, LLC.Mono-diameter wellbore casing
US74130205 Mar 200419 Ago 2008Weatherford/Lamb, Inc.Full bore lined wellbores
US741602713 Ago 200226 Ago 2008Enventure Global Technology, LLCAdjustable expansion cone assembly
US741900918 Mar 20052 Sep 2008Shell Oil CompanyApparatus for radially expanding and plastically deforming a tubular member
US742491818 Ago 200316 Sep 2008Enventure Global Technology, L.L.C.Interposed joint sealing layer method of forming a wellbore casing
US74346181 Jun 200514 Oct 2008Shell Oil CompanyApparatus for expanding a tubular member
US743813223 Abr 200321 Oct 2008Shell Oil CompanyConcentric pipes expanded at the pipe ends and method of forming
US743813326 Feb 200421 Oct 2008Enventure Global Technology, LLCApparatus and method for radially expanding and plastically deforming a tubular member
US747572321 Jul 200613 Ene 2009Weatherford/Lamb, Inc.Apparatus and methods for creation of down hole annular barrier
US74814612 May 200627 Ene 2009Smith International, Inc.Device which is expandable to engage the interior of a tube
US750339326 Ene 200417 Mar 2009Enventure Global Technology, Inc.Lubrication system for radially expanding tubular members
US750339615 Feb 200617 Mar 2009Weatherford/LambMethod and apparatus for expanding tubulars in a wellbore
US751331322 Sep 20037 Abr 2009Enventure Global Technology, LLCBottom plug for forming a mono diameter wellbore casing
US75167909 Ene 200314 Abr 2009Enventure Global Technology, LLCMono-diameter wellbore casing
US755277613 Oct 200530 Jun 2009Enventure Global Technology, LLCAnchor hangers
US755609215 Feb 20027 Jul 2009Enventure Global Technology, LLCFlow control system for an apparatus for radially expanding tubular members
US755936512 Nov 200214 Jul 2009Enventure Global Technology, LLCCollapsible expansion cone
US757177418 Ago 200311 Ago 2009Eventure Global TechnologySelf-lubricating expansion mandrel for expandable tubular
US760375814 Feb 200120 Oct 2009Shell Oil CompanyMethod of coupling a tubular member
US76614705 Abr 200216 Feb 2010Baker Hughes IncorporatedExpandable packer with anchoring feature
US766553219 Oct 200723 Feb 2010Shell Oil CompanyPipeline
US77125223 Abr 200711 May 2010Enventure Global Technology, LLCExpansion cone and system
US773096530 Ene 20068 Jun 2010Weatherford/Lamb, Inc.
Shell Oil Company
Retractable joint and cementing shoe for use in completing a wellbore
US773991718 Ago 200322 Jun 2010Enventure Global Technology, LLCPipe formability evaluation for expandable tubulars
US77400764 Mar 200322 Jun 2010Enventure Global Technology, L.L.C.Protective sleeve for threaded connections for expandable liner hanger
US775777412 Oct 200520 Jul 2010Weatherford/Lamb, Inc.Method of completing a well
US777529015 Abr 200417 Ago 2010Enventure Global Technology, LLCApparatus for radially expanding and plastically deforming a tubular member
US779372111 Mar 200414 Sep 2010Eventure Global Technology, LLCApparatus for radially expanding and plastically deforming a tubular member
US77982254 Ago 200621 Sep 2010Weatherford/Lamb, Inc.Apparatus and methods for creation of down hole annular barrier
US781918512 Ago 200526 Oct 2010Enventure Global Technology, LLCExpandable tubular
US785705211 May 200728 Dic 2010Weatherford/Lamb, Inc.Stage cementing methods used in casing while drilling
US78868316 Ago 200715 Feb 2011Enventure Global Technology, L.L.C.Apparatus for radially expanding and plastically deforming a tubular member
US791828431 Mar 20035 Abr 2011Enventure Global Technology, L.L.C.Protective sleeve for threaded connections for expandable liner hanger
US792192512 May 200812 Abr 2011Weatherford/Lamb, Inc.Method and apparatus for expanding and separating tubulars in a wellbore
US793820128 Feb 200610 May 2011Weatherford/Lamb, Inc.Deep water drilling with casing
US816206724 Abr 200924 Abr 2012Weatherford/Lamb, Inc.System and method to expand tubulars below restrictions
US820163619 Feb 200919 Jun 2012Weatherford/Lamb, Inc.Expandable packer
USRE428779 Jul 20101 Nov 2011Weatherford/Lamb, Inc.Methods and apparatus for wellbore construction and completion