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 numberUS20050171248 A1
Publication typeApplication
Application numberUS 10/789,846
Publication dateAug 4, 2005
Filing dateFeb 27, 2004
Priority dateFeb 2, 2004
Also published asCA2556250A1, US7304098, US20060047028, US20060278391, WO2005073501A1
Publication number10789846, 789846, US 2005/0171248 A1, US 2005/171248 A1, US 20050171248 A1, US 20050171248A1, US 2005171248 A1, US 2005171248A1, US-A1-20050171248, US-A1-2005171248, US2005/0171248A1, US2005/171248A1, US20050171248 A1, US20050171248A1, US2005171248 A1, US2005171248A1
InventorsYanmei Li, Jian Zhou
Original AssigneeYanmei Li, Jian Zhou
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hydrogel for use in downhole seal applications
US 20050171248 A1
Abstract
The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion of hydrogel in the seals allows the seals to be manipulated or altered through certain environmental factors. For instance, temperature, oil/water ratio, pH and the electronic field may all be used to alter the characteristics of the hydrogel. In this way, the seal may be caused to swell in response to a specific stimulus, thereby preventing or sealing a leak without requiring additional work or input from the operator.
Images(3)
Previous page
Next page
Claims(16)
1. A composition for forming a seal comprising: (a) a hydrogel and (b) a base material.
2. The composition of claim 1, wherein said base material is a polymer.
3. The composition of claim 2, wherein said polymer is an elastomer.
4. The composition of claim 3, wherein said elastomer is selected from the group consisting of nitrile rubber, hydrogenated nitrile rubber, carboxyl nitrile rubber, silicon rubber, ethylene-propylene-diene copolymers, fluoroelastomers and perfluoroelastomers.
5. The composition of claim 2 wherein said polymer is a thermoplastic.
6. The composition of claim 5, wherein said thermoplastic is selected from the group consisting of TeflonŽ, polyetheretherketone, polypropylene, polystyrene and polyphenylene sulfide.
7. The composition of claim 1 wherein said hydrogel is selected from the group consisting of: methylcellulose, cellulose acetate pthalate and hydroxypropyl methylcellulose polymers, poly (ethylene oxide) polymers, guar, derivatized guar, polyacrylamide, silicon-based polymers and fluorosilicone-based polymers.
8. The composition of claim 1 wherein said hydrogel is a metal complex of a polymer selected from the group consisting of: methylcellulose, cellulose acetate pthalate and hydroxypropyl methylcellulose polymers, poly (ethylene oxide) polymers, guar, derivatized guar, polyacrylamide, silicon-based polymers and fluorosilicone-based polymers.
9. A seal for use in a wellbore comprising the composition of claim 1.
10. The composition of claim 1, wherein said composition forms a seal.
11. The composition of claim 10, wherein said seal is an o-ring.
12. The composition of claim 10, wherein said seal is a t-seal.
13. The composition of claim 10, wherein said seal is a chevron seal.
14. The composition of claim 10, wherein said seal is a spring seal.
15. The composition of claim 10, wherein said seal is a packer element.
16. The composition of claim 10, wherein said seal is a bridge plug.
Description
    REFERENCE TO RELATED PROVISIONAL APPLICATION
  • [0001]
    This application claims the benefit of U.S. Provisional Application Ser. No. 60/541,035.
  • BACKGROUND OF THE INVENTION
  • [0002]
    1. Field of the Invention
  • [0003]
    The present invention relates generally to seals for oilfield applications. More specifically the present invention describes the use of hydrogel in seals for downhole use.
  • [0004]
    2. Description of the Prior Art
  • [0005]
    Seals, including o-rings, packer elements, Chevron seals, gaskets, etc., are widely used for numerous downhole oilfield applications. One ongoing issue in this area is how to energize seals and maintain sealing forces throughout seal service life. Capital loss or remediation associated with seal failure can be tremendous in certain operation areas.
  • [0006]
    One conventional method to energize seal is to utilize mechanical force to deform seal between sealing surfaces. For seals with large cross-section and/or large sealing gaps, satisfactory sealing performance is hard to achieve due to limited mechanical force. The other major problem encountered during operation is the relaxation of contact force between the seal and the sealing surfaces. This is caused primarily by the viscoelastic nature of polymeric materials used in conventional seals.
  • [0007]
    Another technique for improving seals involves the use of a pressure activated sealant that is specifically designed to seal leaks in wells and severe-environment hydraulic systems. The sealant functions by causing a pressure drop through a leak site, which in turn causes the sealant fluid to polymerize into a flexible solid seal. However, the major drawback of this technique is it requires a service engineer and a special tool to deliver the sealant to the leak site and complete the job. At that time, a significant amount of damage may have already occurred. Another disadvantage is that often tools which are installed 20,000 ft deep in the well where it is difficult and inefficient to deliver the sealant to the exact location where the leak occurs. Yet another drawback of this technique is that the sealant only starts to polymerize after a leak occurs. In certain cases, where the leakage is catastrophic, operation can fail before the polymerization process is completed.
  • [0008]
    Hydrogel technology has been rapidly developed in medical industry due to its unique response to environmental changes such as pH value, salinity, electrical current, temperature and antigens. Hydrogel is a flexible, rubber-like and solvent-swollen polymer. In an aqueous environment, hydrogel can undergo a reversible phase transformation that results in dramatic volumetric swelling and shrinking upon exposure and removal of a stimulus. A property common to all gels is their unique ability to undergo abrupt changes in volume. Gel can swell or shrink as much as 1000 times in response to small external condition changes. Through the conversion of chemical or electrical energy into mechanical work, a number of device have already been constructed which can produce forces up to 100 N/cm2 and contraction rate on the order of a second. Using microscale hydrogel, the volumetric transition can occur within minutes or even seconds. The favorable scaling of hydrogel dynamic has been the essential element in the development of micro-fluidic devices that employ hydrogel valves for flow control. One major benefit of these devices is that they are completely autonomous and therefore require no external power source.
  • SUMMARY OF THE INVENTION
  • [0009]
    The present invention provides an improved seal material for use with both dynamic and static seal applications. In particular, the invention provides a seal material that is useful for downhole wellbore applications, including, but not limited to, o-rings, packer elements, chevron seals and gaskets.
  • [0010]
    A seal which is prepared or formed in accordance with the present invention includes a hydrogel polymer incorporated or included as part of the seal body. In this way, the seal may be activated when certain environmental parameters are manipulated or changed. These environmental parameters may include water/oil concentration, differential pressure, temperature, pH, and electronic field. The hydrogel polymer may be embedded, coated, attached or blended with other seal components to form the seal. Commonly used seal components may include elastomers, plastics or other materials known in the art.
  • [0011]
    Once incorporated into the seal body, the hydrogel provides several advantages over typical seal body components. First, the hydrogel allows the seal be to energized via swelling. Since hydrogel can swell as much as 1,000 times in volume, high swelling force can be utilized to energize the main seal body as well as anti-extrusion device.
  • [0012]
    The hydrogel may also allow potential leak paths to be sealed. Hydrogel swells in aqueous environment. That is, whenever it contacts an aqueous medium, it starts to absorb water and swell. For applications with hard-to-seal voids or surfaces, hydrogel can stop leak via swelling. Swelling leads to greater squeeze of main seal body. This, in turn, seals the leak path and prevents seal failure.
  • [0013]
    Another feature of seals incorporating hydrogel is the ability of the seals to be reset. That is, the seals may be provided in a first configuration, then upon exposure to a certain environmental parameter, the seal may change or take a second configuration. Upon removal of the certain environmental parameter, or upon exposure to yet another environmental parameter, the seal may then return to it's original configuration. This characteristic is particularly beneficial in downhole applications where a resettable seal is required.
  • [0014]
    These and other features of may be used employed either alone or in combination, depending on the specific nature of the application in which they are used.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0015]
    FIG. 1 shows a three-rubber element array.
  • [0016]
    FIG. 2 shows a garter spring element array.
  • [0017]
    FIG. 3 shows a packer element array.
  • [0018]
    FIG. 4 shows an o-ring with backup rings.
  • [0019]
    FIG. 5 shows a t-seal.
  • [0020]
    FIG. 6 shows a chevron seal stack.
  • [0021]
    FIG. 7 shows a spring energized seal.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0022]
    Seals formed in accordance with the present invention comprise two primary elements:
      • (1) a base material and (2) a hydrogel. The respective ratios of these two materials in the seal is determined the specific nature of the application in which the seals will be used. As previously mentioned, hydrogels can change their swelling behavior upon exposure to an external stimulus, such as pH, temperature, light, and electric field. Therefore, factors which may contribute to the selection of a proper ratio of base material to hydrogel may include the temperature to which the seal will be exposed, the pH at which the seal will be used, the nature of any chemicals the seal may come into contact with (including, for instance, the oil/water ratio), the differential pressure which the seal must withstand and the electronic environment of the application. Any number of these factors may effect the performance of the seal.
  • [0024]
    The base material of the seal is generally selected from any suitable material known in the industry for forming seals. Preferably, the base material is a polymer. More preferably, the base material is an elastomer or a thermoplastic. Elastomers that are particularly useful in the present invention include nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), carboxyl nitrile rubber (XNBR), silicone rubber, ethylene-propylene-diene copolymer (EPDM), fluoroelastomer (FKM, FEPM) and perfluoroelastomer (FFKM). Thermoplastics which are particularly useful in the present invention include TeflonŽ, polyetheretherketone, polypropylene, polystyrene and polyphenylene sulfide.
  • [0025]
    As used herein the term hydrogel is a broad phrase referring in general to a polymer that swells when used in aqueous environment. Hydrogel polymers useful in the present invention are preferably formed of a crosslinked polymer network. When this polymer network is exposed or immersed in a suitable solvent, the polymer chains in the network become solvated. In certain cases, crosslinkers may be provided to prevent the complete mixing of the polymer chains and the solvent by providing an elastic restoring force that counters the expansion of the network.
  • [0026]
    The polymer network of the hydrogel may be formed from any suitable polymeric material. In a preferred embodiment, the polymer network is formed from cross-linked polymers including water-soluble methylcellulose, cellulose acetate phtalate, and hydroxypropyl methylcellulose polymers, poly (ethylene oxide) polymers, guar and its derivatives, polyacrylamide, silicon-based materials, and flouro-silicone based materials.
  • [0027]
    Seals described in the present invention comprise a polymer and a hydrogel. The polymer and hydrogel may be combined in any suitable ratio using any suitable method. In a preferred embodiment, polymer/hydrogel blends may be prepared using any of the following methods: (1) a solution process; (2) a mesophase mediated process; (3) physical mixing/compounding, (4) injection or extrusion, (5) in-situ polymerization or (6) melt processing. Curing methods may be any suitable method, but is preferably thermal curing, microwave radiation or electronic beam radiation. Chemical modification, such as branching or grafting, of the hydrogel may be performed prior to manufacturing of polymer/hydrogel blends to achieve optimum dispersion of the hydrogel polymer.
  • [0028]
    Without limiting the scope of the invention, the following examples show specific seal configurations which may particularly benefit from the incorporation or inclusion of hydrogel in the seal material.
  • EXAMPLE 1 Packer Elements
  • [0029]
    FIG. 1 shows three-piece rubber element array or packer element 10, such as that commonly used in downhole packers. The packer elements are external packer seals that seal the annulus space between tubing and casing (not shown). Elements are energized by axial deflection of the seals after the packer is run into the hole. Commonly used packer elements typically consist of backup end rings 16 and a center seal or element 18. The center seal 18 typically includes a ring 20 which establishes the inner diameter of the seal. Hydrogel may be included or incorporated into any or all of the seal elements. The hydrogel allows the seals to be energized in response to external stimuli, as previously described.
  • [0030]
    FIG. 2 shows a garter spring element array 50. The array 50 includes a main element or seal 52, a garter spring 54 and backup end rings 56. The array also includes an ID ring 58. Hydrogel may be included in any or all of the seals of the array. As with the assembly of FIG. 1, the garter spring array also benefits from the inclusion of hydrogel seal components by allowing them to respond to external stimuli.
  • [0031]
    FIG. 3 shows yet another packer element array 100. This array includes a main seal 70, backup seals 72 and an ID ring 74. As with the seals shown in FIGS. 1 and 2, hydrogel may be included in any or all of the seals.
  • EXAMPLE 2 O-Ring
  • [0032]
    O-rings are simple bi-directional static seals. For high temperature and/or high pressure sealing applications, backup rings are used to prevent O-ring extrusion. As shown in FIG. 4, the o-ring 150 includes two backup rings 152 which are formed of thermoplastic materials blended with hydrogel polymer. The O-ring may also be formed of elastomers blended with hydrogel polymer. In this application, the hydrogel is able to seal off potential leak paths as well as keep the o-ring energized via swelling. These characteristics are not achievable with existing conventional rubber materials used for o-ring applications.
  • EXAMPLE 3 T-Seal
  • [0033]
    T-seals are typically used as reciprocating bi-directional dynamic seals. As shown in FIG. 5, T-seal 200 including seal body 202 and retaining ring 204. The seal body is formed of a hydrogel modified thermoplastic or elastomer. Hydrogel can seal off potential leak paths as well as keep the T-seal energized via swelling. These benefits are not achievable with existing conventional rubber materials used for T-seal application.
  • EXAMPLE 4 Seal Stack/Packing
  • [0034]
    Vee packing or chevron seal stacks are multiple seal lip multi-component seal sets that are energized by differential pressure. Seal stacks are also suited to internal dynamic seal applications. Most conventional packing stacks are combinations of softer elastomer parts and harder plastic parts. The incorporation of hydrogel in the seal elements allows any potential leak paths to be sealed, as well as keeping seal stack energized via swelling. This is not achievable with existing conventional rubber materials used for seal stack applications.
  • [0035]
    FIG. 6 shows a seal stack 250 having first hydrogel/elastomer elements 252 and second hydrogel/plastic elements 254. These first and second elements are preferably alternating, as shown. However, depending on the specific nature of the application any configuration of first and second elements may be used.
  • EXAMPLE 5 Spring-Energized Seal
  • [0036]
    Spring-energized seals are uni-directional seals and may be either static or dynamic. These seals combine the benefits of packing, as seen in vee or chevron seals and radial compression as seen in o-rings. As shown in FIG. 7, a spring-energized seal 300 will be made of hydrogel modified thermoplastic or rubber materials. Hydrogel can seal off potential leak path as well as keep seal energized via swelling which is not achievable with existing conventional rubber materials used for seal application.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4572295 *Aug 13, 1984Feb 25, 1986Exotek, Inc.Method of selective reduction of the water permeability of subterranean formations
US4918121 *Oct 20, 1988Apr 17, 1990Rhone-Poulenc ChimieCurable organopolysiloxane compositions comprising a hydrogel hardening agent
US5211827 *Aug 5, 1991May 18, 1993T And G CorporationElectrochemical cell with ionic semiconductor separator
US6576713 *Feb 22, 2001Jun 10, 2003Nippon Shokubai Co., Ltd.Water-absorbent resin powder and production process therefor
US6635732 *Jul 30, 2001Oct 21, 2003Surgidev CorporationWater plasticized high refractive index polymer for ophthalmic applications
US6667029 *Jan 12, 2001Dec 23, 2003Isp Investments Inc.Stable, aqueous cationic hydrogel
US6692766 *Jun 13, 1995Feb 17, 2004Yissum Research Development Company Of The Hebrew University Of JerusalemControlled release oral drug delivery system
US6699503 *Nov 1, 2000Mar 2, 2004Yamanuchi Pharmaceutical Co., Ltd.Hydrogel-forming sustained-release preparation
US6699611 *May 29, 2001Mar 2, 2004Motorola, Inc.Fuel cell having a thermo-responsive polymer incorporated therein
US20040052689 *Jun 26, 2003Mar 18, 2004Porex Technologies CorporationSelf-sealing materials and devices comprising same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7240731Feb 4, 2004Jul 10, 2007Baker Hughes IncorporatedShoe for expandable liner system and method
US7318481Apr 13, 2005Jan 15, 2008Baker Hughes IncorporatedSelf-conforming screen
US7387158Jan 18, 2006Jun 17, 2008Baker Hughes IncorporatedSelf energized packer
US7392841Dec 28, 2005Jul 1, 2008Baker Hughes IncorporatedSelf boosting packing element
US7422071Jan 5, 2006Sep 9, 2008Hills, Inc.Swelling packer with overlapping petals
US7441596Jun 23, 2006Oct 28, 2008Baker Hughes IncorporatedSwelling element packer and installation method
US7478678Dec 21, 2005Jan 20, 2009Baker Hughes IncorporatedTime release downhole trigger
US7478686Jun 15, 2005Jan 20, 2009Baker Hughes IncorporatedOne trip well drilling to total depth
US7552772Sep 14, 2006Jun 30, 2009Baker Hughes IncorporatedLocating recess in a shoe for expandable liner system
US7597150Feb 1, 2008Oct 6, 2009Baker Hughes IncorporatedWater sensitive adaptive inflow control using cavitations to actuate a valve
US7597152Dec 13, 2007Oct 6, 2009Baker Hughes IncorporatedSwelling layer inflatable
US7644773Jan 12, 2010Baker Hughes IncorporatedSelf-conforming screen
US7661471Dec 1, 2005Feb 16, 2010Baker Hughes IncorporatedSelf energized backup system for packer sealing elements
US7762341May 13, 2008Jul 27, 2010Baker Hughes IncorporatedFlow control device utilizing a reactive media
US7775770 *Dec 21, 2006Aug 17, 2010The Boeing CompanyPitch bearing containment seal
US7823645Nov 2, 2010Baker Hughes IncorporatedDownhole inflow control device with shut-off feature
US7891430Feb 22, 2011Baker Hughes IncorporatedWater control device using electromagnetics
US7913765Oct 19, 2007Mar 29, 2011Baker Hughes IncorporatedWater absorbing or dissolving materials used as an in-flow control device and method of use
US7918272Apr 5, 2011Baker Hughes IncorporatedPermeable medium flow control devices for use in hydrocarbon production
US7918275Nov 19, 2008Apr 5, 2011Baker Hughes IncorporatedWater sensitive adaptive inflow control using couette flow to actuate a valve
US7942206May 17, 2011Baker Hughes IncorporatedIn-flow control device utilizing a water sensitive media
US7992637Aug 9, 2011Baker Hughes IncorporatedReverse flow in-flow control device
US8069921Dec 6, 2011Baker Hughes IncorporatedAdjustable flow control devices for use in hydrocarbon production
US8087459Jan 3, 2012Weatherford/Lamb, Inc.Packer providing multiple seals and having swellable element isolatable from the wellbore
US8096351Jan 17, 2012Baker Hughes IncorporatedWater sensing adaptable in-flow control device and method of use
US8181708May 22, 2012Baker Hughes IncorporatedWater swelling rubber compound for use in reactive packers and other downhole tools
US8191225Jun 5, 2012Baker Hughes IncorporatedSubterranean screen manufacturing method
US8312931Oct 12, 2007Nov 20, 2012Baker Hughes IncorporatedFlow restriction device
US8453746Apr 20, 2006Jun 4, 2013Halliburton Energy Services, Inc.Well tools with actuators utilizing swellable materials
US8453750Aug 4, 2011Jun 4, 2013Halliburton Energy Services, Inc.Well tools utilizing swellable materials activated on demand
US8490707Jan 11, 2011Jul 23, 2013Schlumberger Technology CorporationOilfield apparatus and method comprising swellable elastomers
US8544548Oct 19, 2007Oct 1, 2013Baker Hughes IncorporatedWater dissolvable materials for activating inflow control devices that control flow of subsurface fluids
US8555961Jan 5, 2009Oct 15, 2013Halliburton Energy Services, Inc.Swellable packer with composite material end rings
US8646535Aug 7, 2012Feb 11, 2014Baker Hughes IncorporatedFlow restriction devices
US8839849Mar 18, 2008Sep 23, 2014Baker Hughes IncorporatedWater sensitive variable counterweight device driven by osmosis
US8931570May 8, 2008Jan 13, 2015Baker Hughes IncorporatedReactive in-flow control device for subterranean wellbores
US9018144Dec 11, 2009Apr 28, 2015Baker Hughes IncorporatedPolymer composition, swellable composition comprising the polymer composition, and articles including the swellable composition
US9273533Dec 18, 2010Mar 1, 2016Halliburton Energy Services, Inc.Well tool including swellable material and integrated fluid for initiating swelling
US9303200Jul 30, 2013Apr 5, 2016Baker Hughes IncorporatedPolymer composition, swellable composition comprising the polymer composition, and articles including the swellable composition
US9303483 *Jan 18, 2008Apr 5, 2016Halliburton Energy Services, Inc.Swellable packer with enhanced sealing capability
US20040035590 *Aug 23, 2002Feb 26, 2004Richard Bennett M.Self -conforming screen
US20040154797 *Feb 4, 2004Aug 12, 2004Carmody Michael A.Shoe for expandable liner system
US20050110217 *Nov 22, 2004May 26, 2005Baker Hughes IncorporatedSwelling layer inflatable
US20050205263 *Apr 13, 2005Sep 22, 2005Richard Bennett MSelf-conforming screen
US20060016623 *Jun 15, 2005Jan 26, 2006Richard Bennett MOne trip well drilling to total depth
US20060272806 *Jan 5, 2006Dec 7, 2006Wilkie Arnold ESwelling packer with overlapping petals
US20070007011 *Sep 14, 2006Jan 11, 2007Baker Hughes IncorporatedShoe for expandable liner system
US20070012436 *Dec 9, 2003Jan 18, 2007Rune FreyerCable duct device in a swelling packer
US20070125532 *Dec 1, 2005Jun 7, 2007Murray Douglas JSelf energized backup system for packer sealing elements
US20070137865 *Dec 21, 2005Jun 21, 2007Farrar Amy LTime release downhole trigger
US20070144733 *Dec 28, 2005Jun 28, 2007Murray Douglas JSelf boosting packing element
US20070163777 *Jan 18, 2006Jul 19, 2007Murray Douglas JSelf energized packer
US20070295498 *Jun 23, 2006Dec 27, 2007Wood Edward TSwelling element packer and installation method
US20080035350 *Aug 21, 2007Feb 14, 2008Baker Hughes IncorporatedDownhole Inflow Control Device with Shut-Off Feature
US20080083891 *Oct 1, 2007Apr 10, 2008Dril-Quip, Inc.Gate Valve Actuator
US20080152497 *Dec 21, 2006Jun 26, 2008The Boeing CompanyPitch bearing containment seal
US20080185158 *Jan 18, 2008Aug 7, 2008Halliburton Energy Services, Inc.Swellable packer with enhanced sealing capability
US20090038796 *Aug 10, 2007Feb 12, 2009Baker Hughes IncorporatedExpandable leak path preventer in fluid activated downhole tools
US20090084550 *Sep 30, 2008Apr 2, 2009Baker Hughes IncorporatedWater Swelling Rubber Compound for Use In Reactive Packers and Other Downhole Tools
US20090095487 *Oct 12, 2007Apr 16, 2009Baker Hughes IncorporatedFlow restriction device
US20090101341 *Oct 19, 2007Apr 23, 2009Baker Hughes IncorporatedWater Control Device Using Electromagnetics
US20090101342 *Oct 19, 2007Apr 23, 2009Baker Hughes IncorporatedPermeable Medium Flow Control Devices for Use in Hydrocarbon Production
US20090101344 *Oct 22, 2007Apr 23, 2009Baker Hughes IncorporatedWater Dissolvable Released Material Used as Inflow Control Device
US20090101354 *Oct 19, 2007Apr 23, 2009Baker Hughes IncorporatedWater Sensing Devices and Methods Utilizing Same to Control Flow of Subsurface Fluids
US20090101355 *Oct 19, 2007Apr 23, 2009Baker Hughes IncorporatedWater Sensing Adaptable In-Flow Control Device and Method of Use
US20090133869 *Nov 19, 2008May 28, 2009Baker Hughes IncorporatedWater Sensitive Adaptive Inflow Control Using Couette Flow To Actuate A Valve
US20090179383 *Jul 16, 2009Halliburton Energy Services, Inc.Swellable packer with composite material end rings
US20090205834 *Apr 2, 2009Aug 20, 2009Baker Hughes IncorporatedAdjustable Flow Control Devices For Use In Hydrocarbon Production
US20090236102 *Mar 18, 2008Sep 24, 2009Baker Hughes IncorporatedWater sensitive variable counterweight device driven by osmosis
US20090250222 *Apr 2, 2008Oct 8, 2009Baker Hughes IncorporatedReverse flow in-flow control device
US20090277650 *May 8, 2008Nov 12, 2009Baker Hughes IncorporatedReactive in-flow control device for subterranean wellbores
US20090283275 *May 13, 2008Nov 19, 2009Baker Hughes IncorporatedFlow Control Device Utilizing a Reactive Media
US20100065284 *Nov 23, 2009Mar 18, 2010Halliburton Energy Services, Inc.Cable duct device in a swelling packer
US20100077594 *Apr 1, 2010Baker Hughes IncorporatedSubterranean Screen Manufacturing Method
US20100243235 *Sep 30, 2010Weatherford/Lamb, Inc.Packer Providing Multiple Seals and Having Swellable Element Isolatable from the Wellbore
US20110083861 *Apr 14, 2011Halliburton Energy Services, Inc.Well tool including swellable material and integrated fluid for initiating swelling
CN102678084A *May 31, 2012Sep 19, 2012中煤科工集团重庆研究院Cylindrical hole sealing bag
CN103696726A *Jan 16, 2014Apr 2, 2014河南理工大学Gas drainage hole-sealing device
EP2129865A4 *Feb 6, 2007Aug 12, 2015Halliburton Energy Services IncSwellable packer with enhanced sealing capability
EP2194190A1 *Dec 4, 2008Jun 9, 2010Mageba S.A.Expansion joint bridging device
WO2008097312A1Feb 6, 2007Aug 14, 2008Halliburton Energy Services, Inc.Swellable packer with enhanced sealing capability
WO2008154392A1 *Jun 6, 2008Dec 18, 2008Baker Hughes IncorporatedSwellable packer with back-up systems
Classifications
U.S. Classification524/35
International ClassificationC09K3/10, C08L1/28, C08L5/14, E21B33/12
Cooperative ClassificationC09K3/10, C09K2200/0617, C09K2200/0685, C09K2200/0627, C08L5/14, C08L101/00, C09K2200/0657, C08L1/28, C08L101/14, C09K2200/06, E21B33/12, C09K2200/0632
European ClassificationC08L101/00, C08L1/28, C08L101/14, C08L5/14, C09K3/10, E21B33/12
Legal Events
DateCodeEventDescription
Nov 2, 2004ASAssignment
Owner name: SCHLUMBERGER TECHNOLOGY CORPORATION, TEXAS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LI, YANMEI;ZHOU, JIAN;REEL/FRAME:015324/0704;SIGNING DATES FROM 20040226 TO 20040227