US20090036331A1 - Hydraulic fluid compositions - Google Patents

Hydraulic fluid compositions Download PDF

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Publication number
US20090036331A1
US20090036331A1 US11/890,109 US89010907A US2009036331A1 US 20090036331 A1 US20090036331 A1 US 20090036331A1 US 89010907 A US89010907 A US 89010907A US 2009036331 A1 US2009036331 A1 US 2009036331A1
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United States
Prior art keywords
hydraulic fluid
fluid composition
composition according
aqueous hydraulic
group
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US11/890,109
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English (en)
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Ian D. Smith
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MacDermid Offshore Solutions LLC
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Individual
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Priority to US11/890,109 priority Critical patent/US20090036331A1/en
Assigned to MACDERMID OFFSHORE SOLUTIONS, LLC reassignment MACDERMID OFFSHORE SOLUTIONS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, IAN D.
Priority to BRPI0814520A priority patent/BRPI0814520A8/pt
Priority to CN200880101452.1A priority patent/CN101772559B/zh
Priority to EP20080768565 priority patent/EP2171011A4/en
Priority to PCT/US2008/007571 priority patent/WO2009020494A1/en
Publication of US20090036331A1 publication Critical patent/US20090036331A1/en
Priority to US13/044,613 priority patent/US8563484B2/en
Assigned to MACDERMID OFFSHORE SOLUTIONS, LLC reassignment MACDERMID OFFSHORE SOLUTIONS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, IAN D.
Assigned to MACDERMID OFFSHORE SOLUTIONS, LLC reassignment MACDERMID OFFSHORE SOLUTIONS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, IAN D.
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS FIRST LIEN COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS FIRST LIEN COLLATERAL AGENT FIRST LIEN PATENT SECURITY AGREEMENT Assignors: MACDERMID OFFSHORE SOLUTIONS, LLC
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS SECOND LIEN COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS SECOND LIEN COLLATERAL AGENT SECOND LIEN PATENT SECURITY AGREEMENT Assignors: MACDERMID OFFSHORE SOLUTIONS, LLC
Priority to US14/017,786 priority patent/US8809241B2/en
Assigned to BARCLAYS BANK PLC, AS SUCCESSOR COLLATERAL AGENT reassignment BARCLAYS BANK PLC, AS SUCCESSOR COLLATERAL AGENT ASSIGNMENT AND ASSUMPTION OF SECURITY INTERESTS AT REEL/FRAME NOS. 30831/0549, 30833/0660, 30831/0606, 30833/0700, AND 30833/0727 Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS FIRST LIEN COLLATERAL AGENT
Assigned to MACDERMID OFFSHORE SOLUTIONS, LLC reassignment MACDERMID OFFSHORE SOLUTIONS, LLC RELEASE OF SECURITY INTEREST IN PATENT COLLATERAL AT REEL/FRAME NO. 30833/0837 Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS SECOND LIEN COLLATERAL AGENT
Assigned to MACDERMID OFFSHORE SOLUTIONS, LLC reassignment MACDERMID OFFSHORE SOLUTIONS, LLC RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/06—Clay-free compositions
    • C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/064—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers specially adapted for underwater well heads
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/34—Lubricant additives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0396—Involving pressure control

Definitions

  • This invention relates to aqueous hydraulic fluid compositions, especially hydraulic fluid compositions that are suitable for use in blowout preventer devices used to control wellhead pressure of oil wells.
  • Hydraulic fluids are low viscosity fluids used for the transmission of useful power by the flow of the fluid under pressure from a power source to a load.
  • a liquid hydraulic fluid generally transmits power by virtue of its displacement under a state of stress. Hydraulic fluids generally also lower the coefficient of friction.
  • the compositions typically have sufficient antiwear, antiweld, and extreme pressure properties to minimize metal damage from metal-to-metal contact under high load conditions.
  • Hydraulic fluids are usable in blowout preventer (BOP) devices which are used to control well-head pressure of an oil well that is being drilled and/or in marine environments such as in off-shore oil drilling rigs.
  • BOP blowout preventer
  • a “blowout” is defined herein as an uncontrolled flow of gas, oil, or other well fluids into the atmosphere or into an underground formation.
  • a blowout (or gusher) can occur when formation pressure exceeds the pressure applied to it by the drilling or extraction apparatus.
  • a “blowout preventer” is one of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and drill pipe or in open hole (i.e., hole with no drill pipe) during drilling completion operations.
  • the blowout preventer is a hydraulic device that forms a virtually instantaneously seal around the drill string to seal off well-head pressure when an area of high pressure such as a high pressure gas pocket has been contacted.
  • BOP's on land rigs are typically located beneath the rig at the land's surface; on jackup or platform rigs, are located at the water's surface; and on floating offshore rigs, are located on the seafloor.
  • a BOP control unit stores hydraulic fluid under pressure and provides a mechanism for opening and closing the BOP's quickly and reliably. The opening and closing forces in the unit are typically provided by compressed air and hydraulic pressure.
  • aqueous based hydraulic fluid compositions such as may be used in BOP devices continues to increase due to the environmental, economic and safety (e.g. high non-flammability) advantages of such fluids over conventional non-aqueous, oil-type hydraulic fluids.
  • the OSPAR Convention for the Protection of the Marine Environment of the North-East Atlantic provides a list of substances used in preparations used and discharged offshore which are considered to Pose Little or No Risk to the Environment (PLONOR) which do not need to be heavily regulated.
  • PLONOR Pose Little or No Risk to the Environment
  • aqueous hydraulic fluid composition that is usable in BOP devices is described in U.S. Patent Publication No. 2007/0078068 to Askew, the subject matter of which is herein incorporated by reference in its entirety.
  • Askew describes an aqueous hydraulic fluid composition comprising at least one phospholipid lubricant which is preferably a plant-derived lecithin as the only lubricant in the composition and less than 20% by weight of a mineral oil, synthetic hydrocarbon oil or mixture thereof.
  • Another example of an aqueous hydraulic fluid composition is described in U.S. Pat. No. 5,698,498 to Luciani et al., the subject matter of which is herein incorporated by reference in its entirety.
  • the inventor of the present invention has identified additional additives that can provide improved lubricity and improved stability of aqueous hydraulic fluid compositions that are usable under the extreme conditions encountered in BOP devices.
  • the inventor of the present invention has determined that the use of a stearate such as calcium stearate provides improved lubricity of the aqueous hydraulic fluid composition.
  • the use of calcium stearate in the composition also provides significantly increased stability of the composition.
  • Calcium stearate is also on the PLONOR list of acceptable substances.
  • the present invention relates to an improved aqueous hydraulic fluid composition
  • an improved aqueous hydraulic fluid composition comprising:
  • a first lubricant comprising at least one phospholipid
  • a second lubricant comprising an alkoxylate salt, preferably one or more salts of alkoxylates selected from the group consisting of laurates, palmitates, oleates, and stearates;
  • hydraulic fluid composition comprises less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof.
  • FIG. 1 depicts a graph of a Falex extreme pressure test performed on various formulations containing lecithin alone or in combination with calcium stearate.
  • FIG. 2 depicts a graph of a Falex extreme pressure test performed on aqueous formulations containing 8% by weight lecithin after dilution to 10% w/w with water.
  • FIG. 3 depicts a graph of a Falex extreme pressure test performed on formulations containing 4% w/w lecithin after dilution to 10% w/w with water.
  • the inventor of the present invention has discovered that the addition of a second lubricant comprising an alkoxylate salt to an aqueous hydraulic fluid composition containing a phospholipid as a first lubricant, improves the lubricity of the hydraulic fluid composition and also increases the stability of the composition, in both its concentrated state.
  • a second lubricant comprising an alkoxylate salt
  • Suitable alkoxylate salts include salts of alkoxylates with from 2 to 30 carbons in the alkoxylate carbon chain (straight or branched).
  • Preferable alkoxylate salts include alkali metal, alkaline earth and ammonium salts of (preferably calcium, magnesium and zinc salts of) laurates, palmitates, oleates and stearates, such as calcium stearate, magnesium stearate and zinc stearate. Calcium stearate is most preferred since it is on the PLONOR list.
  • the present invent is directed to an aqueous hydraulic fluid composition
  • an aqueous hydraulic fluid composition comprising:
  • a first lubricant comprising at least one phospholipid
  • a second lubricant comprising a an alkoxylate salt
  • hydraulic fluid composition comprises less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof.
  • Phospholipids usable in the formulations of the invention include any lipid containing a phosphoric acid derivative, such as lecithin or cephalin, preferably lecithin or derivatives thereof.
  • phospholipids include phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, phosphatidic acid and mixtures thereof.
  • the phospholipids may also be glycerophospholipids, more preferably, glycero derivatives of the above listed phospholipids.
  • such glycerophospholipids have one or two acyl groups on a glycerol residue, and each acyl group contains a carbonyl and an alkyl or alkenyl group.
  • the alkyl or alkenyl groups generally contain from about 8 to about 30 carbon atoms, preferably 8 to about 25, most preferably 12 to about 24. Examples of these groups include octyl, dodecyl, hexadecyl, octadecyl, docosanyl, octenyl, dodecenyl, hexadecenyl and octadecenyl.
  • the acyl groups on the glycerophospholipids are generally derived from fatty acids, which are acids having from about 8 to about 30 carbon atoms, preferably about 12 to about 24, most preferably about 12 to about 18 carbon atoms.
  • fatty acids include myristic, palmitic, stearic, oleic, linoleic, linolenic, arachidic, arachidonic acids, or mixtures thereof, preferably stearic, oleic, linoleic, and linolenic acids or mixtures thereof.
  • phospholipids including acylated or hydroxylated phospholipids may also be used in the practice of the invention.
  • lecithin as well as acylated and hydroxylated lecithin may be used in the present invention and may be prepared by methods known to those skilled in the art.
  • Phospholipids may be prepared synthetically or derived from natural sources. Synthetic phospholipids may be prepared by methods known to those in the art. Naturally derived phospholipids are extracted by procedures known to those in the art. Phospholipids may be derived from animal or vegetable sources. Animal sources include fish, fish oil, shellfish, bovine brain and any egg, especially chicken eggs. Vegetable sources include rapeseed, sunflower seed, peanut, palm kernel, cucurbit seed, wheat, barley, rice, olive, mango, avocado, palash, papaya, jangli, bodani, carrot, soybean, corn, and cottonseed.
  • Phospholipids may also be derived from microorganisms, including blue-green algae, green algae, bacteria grown on methanol or methane and yeasts grown on alkanes.
  • the phospholipids are derived from vegetable sources, including soybean, corn, sunflower seed and cottonseed.
  • the present invention also contains an alkoxylate salt as a second lubricant for the hydraulic fluid composition.
  • the inventors of the present invention have determined that while phospholipids such as lecithin are good primary lubricants for use in aqueous hydraulic fluid compositions, an improvement in lubricity is realized by adding an alkoxylate salt (preferably a metal alkoxylate salt) to the composition in an amount proportional to the concentration of phosphiolipid and in proportion to how much of the alkoxylate salt is solubilized by the solution. This may be governed, at least in part, by the (phospholipid) to alkoxylate salt ratio.
  • the alkoxylate salt may be precipitated out of solution on dilution of the formulation with water. In one embodiment, about 10% phospholipid is required to prevent precipitation of the alkoxylate salt in the formulation on dilution.
  • alkoxylate salt acts as a stabilizer for the hydraulic fluid composition, the need for an additional stabilizer in the formulation is eliminated.
  • a typical PLONOR aqueous hydraulic fluid compositions that contain a boron containing salt such as borax and/or inorganic phosphate salts in lecithin/monoethylene glycol concentrates are notoriously unstable and have a tendency to phase separate very quickly especially in warm climates. Borax alone is also very difficult to stabilize in such formulations at the concentrations required.
  • the inventors of the present invention have determined that alkoxylate salts, especially calcium stearate, act as an emulsion stabilizer as well as a lubricant in these compositions.
  • the use of calcium stearate in the composition stabilizes the composition and prevents the composition from phase separating over a much longer period of time.
  • the use of calcium stearate in the aqueous hydraulic fluid of the invention provides both a secondary lubricant and an emulsion stabilizer.
  • the aqueous hydraulic fluid compositions of the invention also preferably contain a biocide.
  • the biocide is chosen so as to be compatible with the lubricating components, i.e., it does not affect lubricating properties.
  • a boron containing salt such as borax decahydrate, is used as the biocide.
  • the biocide may be a sulfur-containing biocide or a nitrogen-containing biocide.
  • Nitrogen-containing biocides include triazines, oxazolidines, and guanidines as well as compounds selected from fatty acid quaternary ammonium salts, such as didecyl dimethyl quaternary ammonium chloride salt.
  • Various biocides are described in U.S.
  • the concentration of the biocide is sufficient to at least substantially prevent bacterial growth in the hydraulic fluid and preferably to kill the bacteria present.
  • the hydraulic fluid further comprises an antifreeze additive capable of lowering the freezing point of the hydraulic fluid to at least about ⁇ 30° F., which is below the minimum temperature expected to be encountered in such environments.
  • the antifreeze additive is chosen so as to be non-reactive with the lubricating components and biocide and is therefore not detrimental to the lubricating properties of the hydraulic fluid.
  • the anti-freeze additive comprises at least one alcohol (preferably a dihydroxy alcohol) having from 2 to 4 carbon atoms in an amount sufficient to reduce the freezing point to below ⁇ 30° F.
  • Preferred alcohols include monoethylene glycol, glycerol, propylene glycol, 2-butene-1,4-diol, polyethylene glycols or polypropylene glycols.
  • monoethylene glycol, which is PLONOR approved is used as the anti-freeze additive of the invention in an amount sufficient to reduce the freezing point of the hydraulic fluid composition to the desired temperature.
  • the hydraulic fluid composition of the invention may also contain a corrosion inhibitor that prevents corrosion and oxidation.
  • corrosion inhibitors include, inorganic/organic phosphates, fatty carboxylic acids neutralized with an alkanolamine, amine carboxylates, alkylamines and alkanolamines as well as copper corrosion inhibitors such as benzotriazoles.
  • Suitable alkanolamines include monoethanolamine and triethanolamine.
  • Suitable alkylamines comprise a C 6 -C 20 linear or branched alkyl group.
  • Suitable alkanolamines typically comprise 1 to 12 carbon atoms, and may comprise more than one alkanol group, such as dialkanolamines and trialkanolamines.
  • corrosion inhibitors usable in the practice of the invention include water-soluble polyethoxylated fatty amines and polyethoxylated diamines.
  • the corrosion inhibitor is usable in a concentration sufficient so that substantially no corrosion occurs, i.e., corrosion, if present, results in a loss of less than 10 microns per year in the thickness of a metal in contact with the hydraulic fluid.
  • the hydraulic fluid is prepared as a concentrate which must be diluted with about 9 parts water or water glycol mixture to about 1 part concentrate to achieve the working concentrations.
  • Formulations were prepared with lecithin in the concentrate and without calcium stearate in a PLONOR formulation.
  • a first formulation was prepared with 7% by weight lecithin in the concentrate and no calcium stearate.
  • a second formulation was prepared with 12% by weight lecithin and no calcium stearate.
  • a third formulation was prepared with 14% by weight lecithin and no calcium stearate.
  • a fourth formulation contained 7% by weight lecithin and 7% by weight calcium stearate.
  • the PLONOR formulations contained:
  • the Falex tester measures the torque experienced on a rotating test pin submerged in the test fluid, as it is subjected to increasing load.
  • the load on the pin is increased at 100 pound increments and the torque measured at each load increment.
  • FIG. 1 A graphical representation of this data is provided in FIG. 1 . As is seen, the compositions containing 14% lecithin alone and 7% lecithin with 7% calcium stearate provided the highest maximum applied load and thus the best extreme pressure performance.
  • a first formulation was prepared with 8% by weight lecithin with 66% by weight monoethylene glycol (MEG) and water and a second formulation was prepared with the addition of 1% calcium stearate to the first formulation.
  • An extreme pressure test was performed on each fluid and the data are tabulated in Table 2. A graphical representation of the data is provided in FIG. 2 .
  • a first formulation was prepared with 4% lecithin with 78% by weight monoethylene glycol (MEG) and water and a second formulation was prepared with the addition of 1% calcium stearate to the first formulation.
  • An extreme pressure test was performed on each fluid and the data are tabulated in Table 3. A graphical representation of the data is provided in FIG. 3 .

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
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  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Geochemistry & Mineralogy (AREA)
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US11/890,109 2007-08-03 2007-08-03 Hydraulic fluid compositions Abandoned US20090036331A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US11/890,109 US20090036331A1 (en) 2007-08-03 2007-08-03 Hydraulic fluid compositions
BRPI0814520A BRPI0814520A8 (pt) 2007-08-03 2008-06-18 composições de fluido hidráulico
CN200880101452.1A CN101772559B (zh) 2007-08-03 2008-06-18 液压流体组合物
EP20080768565 EP2171011A4 (en) 2007-08-03 2008-06-18 HYDRAULIC FLUID COMPOSITIONS
PCT/US2008/007571 WO2009020494A1 (en) 2007-08-03 2008-06-18 Hydraulic fluid compositions
US13/044,613 US8563484B2 (en) 2007-08-03 2011-03-10 Hydraulic fluid compositions
US14/017,786 US8809241B2 (en) 2007-08-03 2013-09-04 Hydraulic fluid compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/890,109 US20090036331A1 (en) 2007-08-03 2007-08-03 Hydraulic fluid compositions

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US13/044,613 Continuation US8563484B2 (en) 2007-08-03 2011-03-10 Hydraulic fluid compositions

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US20090036331A1 true US20090036331A1 (en) 2009-02-05

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US11/890,109 Abandoned US20090036331A1 (en) 2007-08-03 2007-08-03 Hydraulic fluid compositions
US13/044,613 Expired - Fee Related US8563484B2 (en) 2007-08-03 2011-03-10 Hydraulic fluid compositions
US14/017,786 Expired - Fee Related US8809241B2 (en) 2007-08-03 2013-09-04 Hydraulic fluid compositions

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US14/017,786 Expired - Fee Related US8809241B2 (en) 2007-08-03 2013-09-04 Hydraulic fluid compositions

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US (3) US20090036331A1 (pt)
EP (1) EP2171011A4 (pt)
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WO (1) WO2009020494A1 (pt)

Cited By (12)

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US20100016186A1 (en) * 2008-07-15 2010-01-21 Smith Ian D Thermally Stable Subsea Control Hydraulic Fluid Compositions
US20100016187A1 (en) * 2008-07-15 2010-01-21 Smith Ian D Environmental Subsea Control Hydraulic Fluid Compositions
US20100015250A1 (en) * 2008-07-15 2010-01-21 Smith Ian D Thermally Stable Subsea Control Hydraulic Fluid Compositions
CN102863946A (zh) * 2011-07-08 2013-01-09 长江大学 一种抗高温钻井液润滑剂
CN103695141A (zh) * 2013-12-02 2014-04-02 马聪 一种环保金属切削冷却防锈液及其制备方法
WO2014150099A1 (en) * 2013-03-14 2014-09-25 Buckman Laboratories International, Inc. Modified lecithin corrosion inhibitor in fluid systems
US20150114655A1 (en) * 2013-10-30 2015-04-30 Transocean Sedco Forex Ventures Limited Prevention of gas hydrates formation in bop fluids in deep water operations
US9096812B2 (en) 2008-07-15 2015-08-04 Macdermid Offshore Solutions, Llc Environmental subsea control hydraulic fluid compositions
CN103865623B (zh) * 2014-03-20 2015-10-28 陕西省石油化工研究设计院 一种多功能无毒水基防锈切割液
WO2015031052A3 (en) * 2013-08-31 2015-11-19 Houghton Technical Corp. Hydraulic fluid compositions
US20180105734A1 (en) * 2008-02-29 2018-04-19 Tucc Technology, Llc Methods, Systems, and Compositions for the Controlled Crosslinking of Well Servicing Fluids
US20230026695A1 (en) * 2021-07-12 2023-01-26 Halliburton Energy Services, Inc. Biocide blend for treating wellbores

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US9175538B2 (en) * 2010-12-06 2015-11-03 Hydril USA Distribution LLC Rechargeable system for subsea force generating device and method
SG11201700366UA (en) * 2014-08-07 2017-02-27 Mitsubishi Electric Corp Rail position measurement device
EP3340104B1 (en) * 2016-12-21 2023-11-29 Axis AB A method for generating alerts in a video surveillance system
CN110168044B (zh) * 2017-01-11 2022-02-01 沙特阿拉伯石油公司 高性能盐水增粘剂
CA3206391A1 (en) 2022-07-12 2024-01-12 Secure Energy (Drilling Services) Inc. Lubricant blends and methods for improving lubricity of brine-based drilling fluids
WO2025131704A1 (de) 2023-12-18 2025-06-26 Clariant International Ltd Wasserbasierende hydraulikflüssigkeiten

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BRPI0814520A8 (pt) 2018-12-11

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