WO2010039131A1 - Composé de caoutchouc gonflant dans l'eau destiné à être utilisé dans des garnitures d'étanchéité réactives et d'autres outils de fond de trou - Google Patents

Composé de caoutchouc gonflant dans l'eau destiné à être utilisé dans des garnitures d'étanchéité réactives et d'autres outils de fond de trou Download PDF

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Publication number
WO2010039131A1
WO2010039131A1 PCT/US2008/078424 US2008078424W WO2010039131A1 WO 2010039131 A1 WO2010039131 A1 WO 2010039131A1 US 2008078424 W US2008078424 W US 2008078424W WO 2010039131 A1 WO2010039131 A1 WO 2010039131A1
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WIPO (PCT)
Prior art keywords
phr
elastomer
cellulose
sealing element
rubber
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PCT/US2008/078424
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English (en)
Inventor
James R. Korte
John J. Thurston
James Edward Goodson
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Baker Hughes Incorporated
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Publication date
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Publication of WO2010039131A1 publication Critical patent/WO2010039131A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C08L1/284—Alkyl ethers with hydroxylated hydrocarbon radicals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C08L1/286—Alkyl ethers substituted with acid radicals, e.g. carboxymethyl cellulose [CMC]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
    • C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18—Homopolymers or copolymers of nitriles
    • C08L33/20—Homopolymers or copolymers of acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/02—Copolymers with acrylonitrile
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Definitions

  • the present invention relates to water-swellable elastomers, and more particularly relates, in one non-limiting embodiment, to compositions useful for forming wat ⁇ r- ⁇ w ⁇ llabt ⁇ seals on downhole tools and methods of using them.
  • Well pipe such as coiled or threaded production tubing, for example, is surrounded by an annular space between the exterior wall of the tubing and the interior wall of the well casing or borehole wall. Frequently, it is necessary to seal this annular space between upper and lower portions of the well depth. Appliances for accomplishing the sealing function are known in the well drilling arts as "packers".
  • the sealing element of a packer is a ring of rubber or other elastomer that is in some manner secured and sealed to the interior well surface which may be the interior casing wall or the raw borehole wall. By compression, for example, the ring of rubber is expanded radially against the casing or borehole wall.
  • Bridge plugs are well appliances for obstructing the flow continuity of an entire bore; whether it is the entire cross-section of the wellbore, the cross-section of a well casing or the cross-section of a production tube.
  • One of the greater utilities for a well packer or bridge plug is to isolate a designated section of well bore along the wellbore length that penetrates a particular zone or earth strata. In some cases, the isolated zone may be burdened with an inordinately high internal pressure. For that reason, the p ⁇ okcr or bridge plug may be called upon to confin ⁇ an unusually hkjh pressure differential.
  • the packer engages the raw borehole wall to seal the annulus, for example, the packer must tightly and continuously engage a rough and highly irregular wall surface.
  • Tools are commercial isolation tools that use elastomer swelling technology to ft hnrrir.r in ⁇ n ⁇ i ⁇ /op ⁇ n hole and ca ⁇ inq/casing annuli.
  • Sursh packers may have a water reactive section, an oil reactive section, or both.
  • a water reactive section may consist of water-absorbing particles incorporated in a field- proven nltrlle-based polymer. These ⁇ ailioles swell via absorbing water, which in turn expands the rubber without being physically absorbed into the rubber matrix, which can adversely affect properties.
  • An oil reactive section may utilize oleophilic polymers that absorb hydrocarbons into the matrix. This process may be a physical uptake of the hydrocarbon which swells, lubricates and decreases the mechanical strength of the polymer chain as it expands.
  • a water swellable elastomer tnai Includes at Iea3t one btiau (julyii ici , wliioh may be ⁇ crylonitrile butadiene rubber (NBR), at least one cellulose, at least one acrylic copolymer (AC), and at least one curative.
  • NBR ⁇ crylonitrile butadiene rubber
  • AC acrylic copolymer
  • a selectively deployed sealing element for a well flow channel is responsive to contact with water and involves an elastomer that again includes at least one base polymer (e.g. NBR), at least one cellulose, at least one AC, and at least one curative.
  • base polymer e.g. NBR
  • a well packer having an expandable packing element for sealing a well annulus and an elastomer for expanding the packing element into operative engagement across said annulus.
  • the elastomer includes at least one base polymer (e.g. NBR), at least one cellulose, at least one AC, and at least one curative.
  • a method tor seali ⁇ y a well riuw di ⁇ i ⁇ ntl that Involves introducing a acjuliriy ulc- ment into a well adjacent a flow C ⁇ H ⁇ HI and contacting the sealing element with water to deploy, expand or enlarge the sealing element to seal the flow channel.
  • the sealing element may again involve an elastomer including at least one base polymer (e.g. NBR) 1 at least one cellulose, at least one AC, and at least one curative. All of these elastomers may also contain fillers, activators, antioxidants, process aids, and combinations thereof.
  • FIG. 1 is a graph of % volume increase as a function of temperature overtime for an improved water swelling compound described herein contacting 3.5% NaCI Brine at three different temperatures: 180 0 F (82X), 13O 0 F (54°C), and 70 0 F (21 0 C);
  • FIG. 2 is a graph of % volume increase as a function of NaCI concentration over time for an improved water swelling compound herein contactog .water. at.180°Jr (82°O), jvhere Uie_ water contains no NaCl, and then 3.5% and 6% NaCI;
  • FIG. 3 is a graph of % volume increase as a function of different salts and ion types over time for an improved water swelling compound herein contacting water at room temperature, where the water contains 3.5% of three different salts: NaCI 1 ZnBr and CaCI 2 ;
  • FlG. 4 is a graph of % volume increase over time for an improved water swelling compound herein contacting water at room temperature contrasted with a prior water swelling compound;
  • FlG. 5 is a schematic, cross-section view of a downhole tool having a central support substrate or base pipe which bears a selectively deployable sealing element (a water swellable elastomer as described herein) in its original, first stable state or initial cross-sectional shape, shown in elevation; and
  • a selectively deployable sealing element a water swellable elastomer as described herein
  • FIG. 6 is a schematic, cross-section view of the downhole tool of FIG. 5 where the selectively deployable sealing element has been deployed or permitted to expand or enlarge up against the walls of a well borehole into which it has been inserted or run in.
  • Figures 5 and 6 are simply schematic illustrations which are not to scale and that the relative sizes and proportions of different elements may be exaggerated for clarity or emphasis.
  • a new water-swelling rubber compound has been discovered that gives improved water swelling volumes under the same conditions as compared with conventional compounds.
  • a rubber compound has been developed for use in downhole applications that will swell in water-based fluids such as water based muds or brines to an improved extent.
  • a cellulose component such as carboxy methyl cellulose (CMC)
  • CMC carboxy methyl cellulose
  • AC acrylate copolymer
  • NBR acrylonitrile butadiene rubber
  • the swell amount may also be affected by the salinity of the water-based fluid.
  • a typical bonded section of the new rubber may increase its original volume up to 150% in a typical downhole fluid containing 3.5 NaCI (typical salt water concentration) at temperatures from as low as ambient (70 0 F or 21 0 C) to as high as 260 0 F (127 0 C), possibly as high as 300 0 F (149°C).
  • the compound could expand on a mandrel with sufficient rubber in the range of 300-400 volume %.
  • the water-swelling elastomer compound described herein is a nitrile-based formulation.
  • a water swelling copolymer which is emulsified in a nitrile soluble oil allows incorporation of this polymer/oil mixture into the nitrile base polymer.
  • several other materials such as fillers and curatives are typically added to give the rubber strength and suitable final properties.
  • Another key material added is a cellulose-based material.
  • the "base” polymer may be an acrylonitrile butadiene rubber
  • NBR liquid dispersed polymers
  • LDP liquid dispersed polymers
  • NBR is a family of unsaturated copolymers of 2-propenenitrile and various butadiene monomers (1,2-butadiene and 1,3-butadiene). Although its physical and chemical properties vary depending on the polymer's composition of acrylonitrile (the more acrylonitrile within the polymer, the higher the resistance to oils but the lower the flexibility of the material), this form of synthetic rubber is generally resistant to oil, fuel, and other chemicals.
  • Other grades of NBR may also be optionally used herein, in non-limiting examples hydrogenated NBR (HNBR) and carboxylated hydrogenated NBR (XHNBR).
  • HNBR hydrogenated NBR
  • XHNBR carboxylated hydrogenated NBR
  • Suitable, but non-limiting examples of NBR include, but are not limited to NIPOL ® 1014 NBR available from Zeon Chemicals, LP; Perbunan NT-1846 from LanXess or N
  • suitable base polymers may include, but are not necessarily limited to, EPDM, synthetic rubbers based on polychloroprene (NEOPRENE ® polymers from DuPont), fluorinated polymer rubbers (e.g. FKM) 1 tetrafluoro ethylene propylene rubbers (FEPM 1 such as AFLAS ® fluoroelastomers available from Asahi Glass Co. Ltd.), fluorosilicone rubber (FVMR), butyl rubbers (HR) and the like.
  • EPDM polychloroprene
  • FEPM 1 fluorinated polymer rubbers
  • FKM fluorinated polymer rubbers
  • FVMR fluorosilicone rubber
  • HR butyl rubbers
  • NBR does not swell significantly in water, thus the addition of the two important ingredients, an Acrylic Copolymer (AC), for instance dispersed in a nitrile-compatible phthalate ester, and a Carboxy Methyl Cellulose (CMC), help make this compound unique.
  • the AC is a mixture comprised of approximately 50% active polymer and 50% phthalate ester oil carrier. Suitable examples of this material include, but are not necessarily limited to, those produced by CIBA Specialty Chemicals (UK) and is sold to others for use in PVC, as well as any other material generally regarded as a Super Absorbent Polymer (SAP) in solid or liquid form.
  • SAP Super Absorbent Polymer
  • LDP Liquid Dispersed Polymer
  • CIBA Specialty Chemicals is one that is based in either a paraffinic, naphthenic or aromatic based oil or any combination thereof, which is compatible with EPDM (ethylene propylene diene monomer).
  • EPDM ethylene propylene diene monomer
  • EPDM is another possibility for the base polymer herein, and other oils besides phthalate esters are also expected to be suitable.
  • this LDP material may have ratios other than 50% polymer and 50% oil carrier and still be useful and effective for the purposes and elastomers set out herein.
  • Another alternative material includes AQUALIC CS-6S, a water absorbent polymer available from Nippon Shokubai Co., Ltd. in solid powder form.
  • the term "polymer” comprises polymers of one monomer, copolymers, terpoly- mers and polymeric forms of more than one type of monomer.
  • An important feature of the compound described herein is the combined swelling effect gained when the LDP is used together with the CMC. The rubber may be made to swell with either, but there are physical limitations of adding each.
  • the LDP is a liquid and the cellulose is a dry powder.
  • the CMC being a solid powder helps to absorb the oil portion of the LDP which helps to give the rubber strength as well as making the rubber less soft during processing and ultimately a higher hardness when cured.
  • CMC are all in the 15-35 weight % range for each, based on the total compo- nents.
  • composition is expressed in terms of parts per hundred parts rubber or phr. All recipes start with 100 parts of raw polymer and then other materials are expressed in parts compared to that.
  • the base polymer is 100 phr NBR with from about 18 to 52 vol% ACN (acrylonitriie).
  • the range of LDP may be in the range of about 80 to about 140 phr. That would be equivalent to about 40-70 phr of the swelling AC.
  • the high oil content may become a limiting factor as to how much of the LDP may be physically added to the NBR. If a higher concentration of the swelling polymer was to become commercially available, then the phr range of 80-140 would still be applicable, however, the active level of polymer would increase beyond the current 40-70 phr range which should result in an elastomer capable of even higher swelling.
  • the CMC would be thus be in the range of about 50-150 phr.
  • Suitable acrylic copolymers include, but are not necessarily limited to copolymers of acrylic acid and its esters with other materials such as sodium hydroxide, polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross linked CMC, polyvinyl alcohol copolymers, cross linked polyethylene oxide and starch grafted copolymer of poly ACN.
  • Cellulose is a general name and in general a commodity.
  • One non-limiting, suitable example is chemically referred to as Carboxy Methyl Cellulose (CMC) and is generally sold under some form of this name.
  • CMC include, but are not limited to, AKUCELL ® AF3281 CMC available from Akzo Nobel, CMC from Aqualon, and CMC from Quingdae Rich Chemicals. Any other general cellulose forms such as hydroxypropylmethyl cellulose (HPMC) or methylcellu- lose (MC) and combinations thereof that function to accomplish the properties and goals of the water swellable elastomers herein and which are compatible with the other components are acceptable for use herein.
  • HPMC hydroxypropylmethyl cellulose
  • MC methylcellu- lose
  • fillers include fillers, activators, antioxidants, process aids, and curatives.
  • Suitable fillers include, but are not necessarily limited to, carbon black, silica (silicon dioxide, SiO 2 ), clays, calcium carbonate, bentonite and the like and combinations thereof.
  • the proportion of filler may range between about 30 and 100 phr.
  • Suitable activators include, but are not necessarily limited to, magnesium oxide (MgO), zinc oxide (ZnO), zinc stearate, stearic acid and the like and combinations thereof.
  • the proportion of activator may be in the range from about 1-10 phr.
  • Suitable antioxidants include, but are not necessarily limited to, any of the diphenyl amines (e.g. NAUGARD ® antioxidants available from Chemtura Corporation), or any of the mercaptobenzimidazoles (e.g. VANOX ZMTI from RT Vanderbilt) and the like and combinations thereof.
  • Suitable process aids include, but are not necessarily limited to, waxes (e.g. VANFRE ® waxes available from R. T. Vanderbilt Company), or process aids such as WB-16 process additive from Strucktol and the like and combinations thereof.
  • the antioxidants and the process aids may each be in the range of from about 0.5 to about 5.0 phr.
  • a variety of various curatives or agents may be used in the cure package (generally sulfur and at least one accelerator).
  • Suitable curatives or curing agents may include, but are not necessarily limited to, sulfur, peroxide and their co-agents (such as VULCUP 40KE available from Crompton and triallyl isocyanurate (TAIC)) and the like and an accelerator.
  • Suitable sulfur accelerators include, but are not necessarily limited to, mercapto compounds, sulfenamides, thiuram compounds, and the like and combinations thereof.
  • Non- limiting examples of more specific mercapto compounds include 2-mercapto- benzothiazole (MBT), mercaptobenzothiazyl disulfide (MBTS), sulfenamides such as benzothiazyl-2-t-butyl sulfenamide (TBBS), and thiurams such as tetramethyl thiuram disulfide (TMTD) and the like, and combinations thereof.
  • Suitable curatives and accelerators may be each present in the range from about 0.2 to about 3.0 phr.
  • Antioxidant 0.5-5.0 0.5-3.0
  • the composition of the water swelling elastomer does not include a water soluble resin.
  • water soluble resins that may be avoided in some non-restrictive versions include polyethyl- ene oxides, polyvinylpyrrolidones, hydroxyethylcellu loses or hydroxypropyl- celluloses.
  • the addition, blending or compounding of these components may be performed by any conventional technique or method to be developed in the future. For instance, the rubber compound may be mill mixed or mixed in a Banbury or other internal mixer. Furthermore, there are no special curing condi- tions required.
  • the water swellable elastomers herein may find a wide variety of uses and are not limited to downhole tools used in hydrocarbon recovery operations, although this is certainly one suitable application. In particular, the water swellable compounds are expected to be useful as selectively deployed sealing elements for flow channels, particularly well flow channels such as annuli and the like.
  • Suitable downhole tools for use in hydrocarbon exploration and recovery operations include, but are not necessarily limited to well packers, bridge plugs, expandable pipes or any other well tool requiring a swelling or expanding area to seal or block fluid flow. These tools once deployed, swollen, enlarged and/or expanded are not desired to shrink and be extracted. In some non-limiting instances, the elastomeric seals may shrink should they no longer become in contact with an aqueous fluid and be allowed to "dry out", but this is highly unlikely in a downhole application.
  • FIGS. 5 and 6 An example of using the water swellable elastomers described herein on a downhole tool, in a specific case a packer, is schematically illustrated in FIGS. 5 and 6 where the overall downhole tool or downhole zone isolator (packer) 10 has a central support substrate or mandrel 12, shown in partial cross-section as of generally tubular shape, around which has been formed a selectively deployed sealing element 14 of the water swellable elastomer.
  • the expansion element 14 has a first or initial size as seen in FIG. 5.
  • the selectively deployed sealing element 14 is in its first or initial state which will allow it to be put in the correct place easily.
  • the selectively deployed sealing element 14" will expand, swell or be deployed to it's a second shape and volume, and will then conform to the borehole walls 16 of the subterranean formation 18. This will be some different or second size of selectively deployed sealing element 14" as shown in FlG. 6 of greater than the volume of the initial or first size shown in FIG. 5. In this manner, wellbore 20 is sealed at this point.
  • the water or brine to deploy the selectively deployed sealing element 14 outward may come from the water in the subterranean formation, or may be pumped downhole from the surface.
  • the water swellable elastomers herein are expected to be used in wellbore isolation products similar to the Reactive Element Packer (REPackers) and FORMPACTM packers, which are considered expandable tools, all available from Baker Oil Tools.
  • Expandable tools are made from special pipe that is swaged when in place, which thins and expands the pipe to make it larger by about 20-25%. Adding or applying the water swelling rubber to the outside of this pipe allows the tool to seal in a slightly larger or irregular hole than the expandable pipe could do on its own.
  • FIGS. 1-4 Shown in FIGS. 1-4 are several plots which show the increase in swell capability of the water swellable elastomer compound compared to an identical compound without CMC, the effect of temperature on the rate of swell, the effect of salt concentration, and the effect that various salts have on the swelling of the compound.
  • the water swellable rubber works best in water-based fluids with low salt content. The higher the salt content, the less it will swell. This is believed to be due to the ionic hindrance that the mono- valent salts; such as Na + and K + impart around the water swelling elastomer. This ionic affinity essentially blocks the polymer from absorbing the water molecules.
  • NBR Nitrile
  • FIG. 1 presents a graph of % volume increase as a function of temperature overtime for an improved water swelling compound herein generated by contacting the rubber with 3.5% NaCI Brine at three different temperatures: 180 0 F (82X) 1 13O 0 F (54°C), and 70 0 F (21 0 C). It may be seen that the vol% increase of 130% was achieved in each case, but that the swelling rate was faster with increasing temperature.
  • FIG. 2 shows a graph of % volume increase as a function of NaCl concentration over time for an improved water swelling compound herein contacting water at 180 0 F (82 0 C) 1 where the water contains no NaCI, and then 3.5% and finally 6% NaCI. It may be seen that maximum swelling decreased with increasing sodium chloride content. Where no NaCI was present, the vol% increase was about 413%, whereas when the water was 6% NaCI brine, the vol% increase was only about 90%.
  • FIG. 3 presents a graph of % volume increase as a function of different salts and ion type over time for an improved water swelling compound herein contacting water at room temperature, where the water contains 3.5% of three different salts: NaCI 1 ZnBr and CaCl2.

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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
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  • General Life Sciences & Earth Sciences (AREA)
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  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

L'invention concerne un composé de caoutchouc, développé grâce à la combinaison d'au moins deux familles de polymère et à l'optimisation d'autres constituants, qui est destiné à être utilisé dans des applications de fond de trou et qui gonfle dans des fluides à base d'eau. Un constituant de cellulose, tel que la carboxyméthylcellulose (CMC), est utilisé conjointement avec un copolymère d'acrylate (AC) qui peut augmenter la capacité de gonflement d'un caoutchouc acrylonitrile-butadiène (NBR) dans l'eau jusqu'à plus de 1000 %. La quantité de gonflement atteinte dépend des limites et des restrictions physiques, de la salinité de l'eau et de la température.
PCT/US2008/078424 2008-10-01 2008-10-01 Composé de caoutchouc gonflant dans l'eau destiné à être utilisé dans des garnitures d'étanchéité réactives et d'autres outils de fond de trou WO2010039131A1 (fr)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072021A2 (fr) * 2009-12-11 2011-06-16 Baker Hughes Incorporated Composition de polymère, composition gonflable comprenant la composition de polymère et articles comprenant la composition gonflable
CN104059192A (zh) * 2014-07-04 2014-09-24 青岛科技大学 一种非共混型聚丙烯酸酯吸水膨胀橡胶及其本体聚合制备方法
CN105189636A (zh) * 2013-06-28 2015-12-23 株式会社吴羽 一种钻孔工具用的橡胶构件，以及钻孔工具，以及油气资源的回收方法
EP2839107A4 (fr) * 2012-04-16 2015-12-23 Zeon Chemicals Lp Composition de caoutchouc gonflant à l'eau et stable à haute température
CN106030023A (zh) * 2014-03-07 2016-10-12 株式会社吴羽 钻井工具用分解性橡胶构件、分解性密封构件、分解性保护构件、钻井工具、以及钻井方法
JP2016204594A (ja) * 2015-04-28 2016-12-08 日信工業株式会社 油田装置
US10156119B2 (en) 2015-07-24 2018-12-18 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve
US10208559B2 (en) 2013-12-27 2019-02-19 Kureha Corporation Diameter-expandable annular degradable seal member for downhole tool, plug for well drilling, and method for well drilling
US10227842B2 (en) 2016-12-14 2019-03-12 Innovex Downhole Solutions, Inc. Friction-lock frac plug
US10253605B2 (en) 2012-08-27 2019-04-09 Halliburton Energy Services, Inc. Constructed annular safety valve element package
US10408012B2 (en) 2015-07-24 2019-09-10 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve
RU2715543C1 (ru) * 2019-08-07 2020-02-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонабухающая эластомерная композиция для изготовления уплотнительных элементов пакерного оборудования
RU2744282C1 (ru) * 2020-08-18 2021-03-04 Федеральное государственное бюджетное образовательное учреж-дение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонабухающая эластомерная композиция
RU2744341C1 (ru) * 2020-08-18 2021-03-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонефтенабухающая эластомерная композиция
CN112485184A (zh) * 2020-11-26 2021-03-12 中国石油大学(北京) 封隔器胶筒实验装置及其实验方法
US10989016B2 (en) 2018-08-30 2021-04-27 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve, grit material, and button inserts
US11125039B2 (en) 2018-11-09 2021-09-21 Innovex Downhole Solutions, Inc. Deformable downhole tool with dissolvable element and brittle protective layer
US11203913B2 (en) 2019-03-15 2021-12-21 Innovex Downhole Solutions, Inc. Downhole tool and methods
US11261683B2 (en) 2019-03-01 2022-03-01 Innovex Downhole Solutions, Inc. Downhole tool with sleeve and slip
US11396787B2 (en) 2019-02-11 2022-07-26 Innovex Downhole Solutions, Inc. Downhole tool with ball-in-place setting assembly and asymmetric sleeve
US11572753B2 (en) 2020-02-18 2023-02-07 Innovex Downhole Solutions, Inc. Downhole tool with an acid pill
US11965391B2 (en) 2018-11-30 2024-04-23 Innovex Downhole Solutions, Inc. Downhole tool with sealing ring

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GB2488075B (en) * 2009-12-11 2016-03-09 Baker Hughes Inc Polymer composition, swellable composition comprising the polymer composition, and articles including the swellable composition
WO2011072021A3 (fr) * 2009-12-11 2011-10-20 Baker Hughes Incorporated Composition de polymère, composition gonflable comprenant la composition de polymère et articles comprenant la composition gonflable
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EP2839107A4 (fr) * 2012-04-16 2015-12-23 Zeon Chemicals Lp Composition de caoutchouc gonflant à l'eau et stable à haute température
US9540501B2 (en) 2012-04-16 2017-01-10 Zeon Chemicals L.P. Water swellable rubber composition having stable swelling property at high temperatures
US10577889B2 (en) 2012-08-27 2020-03-03 Halliburton Energy Services, Inc. Constructed annular safety valve element package
US10253605B2 (en) 2012-08-27 2019-04-09 Halliburton Energy Services, Inc. Constructed annular safety valve element package
US10414851B2 (en) 2013-06-28 2019-09-17 Kureha Corporation Rubber member for downhole tools, downhole tool, and method for recovering hydrocarbon resource
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EP3015501A4 (fr) * 2013-06-28 2016-10-26 Kureha Corp Elément en caoutchouc pour outils de fond, outil de fond et procédé de récupération d'une ressource hydrocarbonée
US10208559B2 (en) 2013-12-27 2019-02-19 Kureha Corporation Diameter-expandable annular degradable seal member for downhole tool, plug for well drilling, and method for well drilling
CN106030023A (zh) * 2014-03-07 2016-10-12 株式会社吴羽 钻井工具用分解性橡胶构件、分解性密封构件、分解性保护构件、钻井工具、以及钻井方法
US10280699B2 (en) 2014-03-07 2019-05-07 Kureha Corporation Degradable rubber member for downhole tools, degradable seal member, degradable protecting member, downhole tool, and method for well drilling
CN104059192A (zh) * 2014-07-04 2014-09-24 青岛科技大学 一种非共混型聚丙烯酸酯吸水膨胀橡胶及其本体聚合制备方法
JP2016204594A (ja) * 2015-04-28 2016-12-08 日信工業株式会社 油田装置
US10156119B2 (en) 2015-07-24 2018-12-18 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve
US10408012B2 (en) 2015-07-24 2019-09-10 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve
US10227842B2 (en) 2016-12-14 2019-03-12 Innovex Downhole Solutions, Inc. Friction-lock frac plug
US10989016B2 (en) 2018-08-30 2021-04-27 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve, grit material, and button inserts
US11125039B2 (en) 2018-11-09 2021-09-21 Innovex Downhole Solutions, Inc. Deformable downhole tool with dissolvable element and brittle protective layer
US11965391B2 (en) 2018-11-30 2024-04-23 Innovex Downhole Solutions, Inc. Downhole tool with sealing ring
US11396787B2 (en) 2019-02-11 2022-07-26 Innovex Downhole Solutions, Inc. Downhole tool with ball-in-place setting assembly and asymmetric sleeve
US11261683B2 (en) 2019-03-01 2022-03-01 Innovex Downhole Solutions, Inc. Downhole tool with sleeve and slip
US11203913B2 (en) 2019-03-15 2021-12-21 Innovex Downhole Solutions, Inc. Downhole tool and methods
RU2715543C1 (ru) * 2019-08-07 2020-02-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонабухающая эластомерная композиция для изготовления уплотнительных элементов пакерного оборудования
US11572753B2 (en) 2020-02-18 2023-02-07 Innovex Downhole Solutions, Inc. Downhole tool with an acid pill
RU2744282C1 (ru) * 2020-08-18 2021-03-04 Федеральное государственное бюджетное образовательное учреж-дение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонабухающая эластомерная композиция
RU2744341C1 (ru) * 2020-08-18 2021-03-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Водонефтенабухающая эластомерная композиция
CN112485184A (zh) * 2020-11-26 2021-03-12 中国石油大学(北京) 封隔器胶筒实验装置及其实验方法

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