WO2002092720A1 - Composition for oil and gas drilling fluids containing organic compounds - Google Patents

Composition for oil and gas drilling fluids containing organic compounds Download PDF

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Publication number
WO2002092720A1
WO2002092720A1 PCT/US2002/011880 US0211880W WO02092720A1 WO 2002092720 A1 WO2002092720 A1 WO 2002092720A1 US 0211880 W US0211880 W US 0211880W WO 02092720 A1 WO02092720 A1 WO 02092720A1
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WO
WIPO (PCT)
Prior art keywords
composition
calcium
acid
drilling
magnesium
Prior art date
Application number
PCT/US2002/011880
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English (en)
French (fr)
Inventor
James Richard Von Krosigk
Original Assignee
James Richard Von Krosigk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by James Richard Von Krosigk filed Critical James Richard Von Krosigk
Priority to NZ529703A priority Critical patent/NZ529703A/xx
Priority to EA200301235A priority patent/EA006189B1/ru
Priority to MXPA03010240A priority patent/MXPA03010240A/es
Priority to AU2002316038A priority patent/AU2002316038C1/en
Publication of WO2002092720A1 publication Critical patent/WO2002092720A1/en
Priority to NO20034989A priority patent/NO20034989D0/no

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Classifications

    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
    • 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

Definitions

  • a drilling fluid such as a drilling mud
  • a drilling mud When a drilling mud is used, it is continuously circulated from a storage area on the surface, downward through the drill pipe, and then upward through the borehole to the surface.
  • the purpose of the mud is to remove drilled solids, such as cuttings and formation carvings, from the borehole to the surface.
  • the fluid acts not only as a carrier, but also serves to cool and lubricate the drill bit, and to prevent pressure from being lost if a void or high-pressure gas pocket is encountered.
  • drilling fluids for maritime drilling are more environmentally friendly than drilling fluids for land based use, but even so, most drilling fluids and muds contain a number of components, including barium, hematite, iron sulfite, and the like as weighting agents.
  • Drilling muds and drilling fluids are typically mixed with oil to produce the final form of mud.
  • the oil component is known as synthetic oil.
  • synthetic oils exhibit minimal toxicity toward aquatic life and possess desirable rheological and filtration control properties for use in drilling fluids as compared to ordinary oil.
  • the use of synthetic oils, particularly oleogomerized olefins, for drilling fluids has recently been patented these are referred to a synthetic oil based drilling muds or (SBM).
  • SBM synthetic oil based drilling muds
  • Mercer et al. in U.S. Pat. No. 5,096,883 discloses the use of compositions consisting essentially of branched paraffin having between 16 and 40 carbon atoms per molecule (such as the hydrogenated dimer of 1-decene) for this use.
  • Patel et al. in U.S. Pat. No. 5,189,012 discloses the use of compositions comprising branched chain oligomers.
  • Drilling muds are usually classified as either water-based muds or oil-based muds, depending upon the character of the continuous phase of the mud, although water-based muds may contain oil and oil-based muds may contain water.
  • Water-based muds (WBM) conventionally comprise a hydratable clay, usually of the montmorillonite family, suspended in water with the aid of suitable surfactants, emulsifiers and other additives including salts, pH control agents and weighting agents such as barite. The water makes up the continuous phase of the mud and is usually
  • Oil-based muds generally use a hydrocarbon oil as the main liquid component with other materials such as clays or colloidal asphalts added to provide the desired viscosity together with emulsifiers, gellants and other additives including weighting agents.
  • Water may be present in greater or lesser amounts but will usually not be greater than 50 percent of the entire composition; if more than about 10 percent water is present, the mud is often referred to as an invert emulsion, i.e. a water-in-oil emulsion.
  • invert emulsion fluids the amount of water is up to about 40 weight percent with the oil and the additives making up the remainder of the fluid.
  • Oil-based muds were traditionally formulated with diesel oil or kerosene as the main oil component as these hydrocarbon fractions generally posses the requisite viscosity characteristics. They do, however, posses the disadvantage of being relatively toxic to marine life and the discharge of drilling muds containing these oils into marine waters is usually strictly controlled because of the serious effects which the oil components may have on marine organisms, particularly those which are commercially important for food. For this reason, offshore drilling rigs must return oil-based muds to shore after they have been used whereas water-based muds may generally be discharged into the ocean without any deleterious effects. The recycling of the OBM has become extensive and therefore in that respect an environmentally desirous outcome of the environmental movement. While the reuse of the OBM is environmentally friendly the use of diesel as the oil phase has a deleterious effect in that oil is left on the cuttings, which are discarded overboard.
  • OBM's may be made environmentally acceptable by the use of oils which posses low inherent toxicity to marine organisms and good biodegradability. These properties are associated in hydrocarbons with extremely low aromaticity. For these reasons, drilling fluids based on linear paraffins, olefins, alkanes and esters are considered desirable, and these are known as synthetic based muds (SBM). In recent years the environmental impact of overboard cuttings disposal both SBM and WBM has come under scrutiny by the regulatory environmental agencies.
  • This invention addresses the further remediation of the cutting produced from use of SBM, WMB, and OBM. It will be utilized in conjunction with and after the solids control equipment that would already be on the drilling rig
  • An object of the present invention is to provide an additive, which can be added to drilling fluids that have been used in the drilling process to make the organic contaminates found in SMB's, WBM's and OBM's available to indigenous marine life as a food.
  • Another object of the present invention is to provide and environmentally safe method for remediating drilling muds so that "mounding” does not occur on the sea floor near drilling rigs, creating “dead zones” for marine life near the rigs.
  • a further object of the present invention is to create an inexpensive method for remediating drilling muds and drilling fluids so that the drilling fluids do not need to be transferred from the rig to land for disposal, and can be safely disposed of at sea off the drilling rig.
  • the invention relates to a composition for oil and gas drilling fluids containing organic contaminants comprising: a solidification agent, and a cell transport agent; wherein said composition comprises enough solidification agent to enable the solidification agent to electrolytically attract the organic contaminates to the surface of the solidification agent when hydrated.
  • the invention also relates to a method for treating drilling fluid with organic contaminates comprising the steps of: mixing the drilling fluid with organic contaminates in a high shear mixer; adding to the drilling fluid a solidification agent which expands when hydrated, and electrolytically attracts the organic contaminates to its surface, adding a cellulosic additive in an amount between 1 and 50 wt.
  • % based on the amount of said organic contaminate in the drilling fluid, forming a mixture; adding a cell transport agent to the mixture in an amount between 0.5 wt% and 10 wt% based on the amount of the organic contaminate in the drilling fluid, wherein the cell transport agent is capable of transporting large organic molecules through cell walls and neutralizing the mixture to a pH of between 7 and 8; and mixing at a high shear rate until the mixture forms a fine powder.
  • this invention relates to composition for oil and gas drilling fluids containing organic contaminants -comprising a solidification agent and a cellulosic additive wherein enough solidification agent is present to enable the solidification agent to electrolytically attract the organic contaminates to the surface of the solidification agent when hydrated.
  • the invention relates to a method for treating drilling fluids with organic contaminates comprising the steps of mixing the drilling fluids with organic contaminates in a high shear mixer; adding a solidification agent which expands when hydrated and such electrolytically attracts said organic contaminates to its surface; adding a cellulosic additive in an amount between 1 and 50 wt % based on the amount of said organic contaminate in the drilling fluid forming a mixture; and mixing at a high shear rate until said mixture forms a fine powder.
  • the invention also relates to composition for oil and gas drilling fluids containing organic contaminants comprising a solidification agent; cell transport agent; a cellulosic additive; and wherein the composition comprises enough solidification agent to enable the solidification agent to electrolytically attract the organic contaminates to the surface of the solidification agent when hydrated.
  • the invention relates to a method for treating drilling fluids with organic contaminates comprising the steps of: mixing the drilling fluids with organic contaminates in a high shear mixer; adding a solidification agent which expands when hydrated and electrolytically attracts said organic contaminates to its surface, adding a cellulosic additive in an amount between 1 and 50 wt % based on the amount of said organic contaminate in the drilling fluid forming a mixture; adding a cell transport agent in an amount between 0.5 wt% and 10 wt% based on the amount of said organic contaminate in the non-soluble drilling fluid, wherein said cell transport agent is capable of transporting large organic molecules through cell walls and neutralizing said mixture to a pH of between 7 and 8; and mixing at a high shear rate until said mixture forms a fine powder.
  • the invention also relates to a nutrient source for marine organisms comprising drilling fluids containing organic contaminants, a solidification agent; a cell transport agent; and a cellulosic additive.
  • the nutrient source for marine organisms made by the process comprising mixing the particulates with organic contaminates in a high shear mixer; adding a solidification agent which expands when hydrated and electrolytically attracts organic contaminates to its surface; adding a cellulosic additive in an amount between 1 and 50 wt % based on the amount of the organic contaminate in the drilling fluid forming a mixture; adding a cell transport agent in an amount between 0.5 wt. % and 10 wt.
  • the cell transport agent is capable of transporting large organic molecules through cell walls and neutralizing the mixture to a pH of between 7 and 8; and mix at a high shear rate until the mixture forms a fine powder.
  • the invention relates to a method to significantly reduce mounding on the seafloor near oil drilling operations comprising the steps ofmixing drilling fluids with organic contaminates in a high shear mixer; adding a solidification agent which expands when hydrated and electrolytically attracts the organic contaminates to its surface; adding a cellulosic additive in an amount between 1 and 50 wt % based on the amount of the organic contaminate in the drilling fluid forming a mixture; adding a cell transport agent in an amount between 0.5 wt % and 10 wt % based on the amount of the organic contaminate in the drilling fluid, wherein the cell transport agent is capable of transporting large organic molecules through cell walls and neutralizing the mixture to a pH of between 7 and 8; and mixing at a high shear rate until the mixture forms a fine powder, dispersing the fine powder into the sea.
  • compositions for remediation of drilling process fluids and drilling completion fluids and a method for the remediation of drilling fluids, particularly drill cuttings (both oil and water based).
  • This composition also works for drilling muds mixed with drill cuttings.
  • Biodegradation is a natural process in which bacteria, micro-organisms and macro-organism consume organics such as petroleum hydrocarbons, carbon-based polymers, cellulose, Rate of Penetration (ROPE) chemicals, lubricants, loss circulation products and other carbon based additives and reduces them to normal products and byproducts such as energy, biomass and carbon dioxide.
  • ROPE Rate of Penetration
  • Required for such a process is carbon nutrient source (in this case hydrocarbons, carbon- based polymers, cellulose, chemicals, lubricants etc), oxygen, a suitable diluent environment (such as water, seawater, and soil), enzymes, minerals and an adequate supply of living bacteria, micro- organisms and/or macro-organisms that are acclimated to the environment.
  • the invention relates to the use of an additive, which converts drill cuttings to a bio-energy source, a nutrient that includes a source of minerals (calcium, magnesium), a source of nutrients for marine organisms (enzyme like cell transport agent) necessary for growth of the available acclimated micro and macro-organisms.
  • a source of minerals calcium, magnesium
  • a source of nutrients for marine organisms enzyme like cell transport agent
  • the dirt, sand, clay, barite, salt, carbon dioxide and a small amount of natural biomass which does result from the use of the additive with drill mud cuttings are components which are natural, and either sink to the sea floor in smaller mounds than the current commercial process, or dissolve in the saline sea water without any significant effect on the pH of the water, or the salt content of the water.
  • composition of the present invention involves: a solidification agent; a cell transport agent; and a celluslosic addititive, wherein enough solidification agent is present to electrically attract the organic contaminates of the drilling fluid to the surface of the solification agent when it is hydrated and expands at least 10 times its original size.
  • the solidification agent is preferably a charged powdered absorption agent mixed with the drilling fluids and drill cuttings. This solidification agent renders the oil and/or organics accessible to biodegradation.
  • the solidification agent is added to the drilling fluid and drill cuttings using a high shear mixer, creating an extremely fine division of particulates.
  • the solidification process has been shown to increase the biodegradation of organic molecules as much as twenty fold.
  • the composition is prepared using a specifically designed high shear mixer, such as a Lancaster mixer, which is employed to insure that the organic contaminants are micronized is such a way as to deposit one micro-drop on each solid particle.
  • Typical solidification agents which can be used, are alkaline earth oxides, such as calcium oxide, calcium peroxide, calcium hydroxide, calcium hydride, calcium borate, calcium nitrates, calcium phosphate, calcium silicates and calcium sulfates.
  • a preferred solidification agent is calcium oxide.
  • Portland cement and ash products such as Calsorb available from LA Ash in Lake Charles LA can be used. Precursers to calcium oxides may work within the scope of this invention, for example, limestone or calcium carbonate may be used, and then heated to create adequate calcium oxides.
  • the solidification agent can also be an alkaline earth metal hydroxide, a high lime based ash and combinations of these.
  • Other solidification agents can be magnesium based, potassium or even cesium, sodium or lithium, based agents.
  • the agent can be magnesium oxide, magnesium peroxide, magnesium hydroxide, magnesium silicate, calcium oxide, calcium peroxide, calcium hydroxide, calcium silicate, and combinations thereof.
  • the agent can be a member of the group comprising: magnesium hydride, magnesium borate, magnesium nitrate, magnesium phosphate, magnesium sulfate, calcium hydride, calcium borate, calcium nitrate, calcium phosphate, calcium carbonate, calcium sulfate, and combinations thereof.
  • the solidification agent can be a member of the group: potassium oxide, potassium peroxide, potassium hydroxide, potassium hydride, potassium borate, potassium nitrate, potassium phosphate, potassium silicate, potassium sulfate; cesium hydroxide, cesium carbonate, cesium sulfate; sodium oxide, sodium peroxide, sodium hydroxide, sodium hydride, sodium borate, sodium nitrate, sodium phosphate, sodium silicate, sodium sulfate; lithium oxide, lithium hydroxide , lithium borohydride; and combinations thereof.
  • the solidification agent is present in an amount up to 99 wt. % of the composition.
  • the solidification agent is hydrophobized.
  • a second component of this invention of the cell transport material such as an electrolyte enzyme or similar intracellular transport agent and most preferably a non-toxic organic acid.
  • electrolyte enzyme or similar intracellular transport agent and most preferably a non-toxic organic acid.
  • These agents enhance the availability of nutrients and make them more readily absorbable. They allow minerals to regenerate and prolong the residence time of essential nutrients. They prepare minerals to react with cells. They allow minerals to inter-act with one another, breaking them down into the simplest ionic forms chelated by the electrolyte.
  • These cell transport materials are preferably a high molecular weight, naturally occurring acid or an organometalic complexes formed with the intracellular transport agent are of a low molecular weight and molecular size, and because of this they are capable of a high degree of penetration into cells.
  • the invention contemplates using a cell transport agent that is a member of the group: humic acid, fulvic acid, citric acid, fulvates, citrates, humates, lignins, and combinations thereof.
  • the cell transport agent can be an allomelanian derived acid. It can be a member of the group: lactic acid, citric acid, and combinations thereof.
  • the cell transport agent which is usable within the scope of the invention can be a combination of lactic acid, citric acid, humic acid, fulvic acid, acetic acid, phosphoric acid, sulfuric acid, carbonic acid, or nitric acid.
  • the present invention concerns a chemical and mechanical process for converting oil mud cuttings (preferably synthetic oil and water based) into form that is consumable by both micro and macro organisms. Synthetic and water based cuttings are preferred because they currently have an acceptable toxicity and biodegradability rating.
  • the process embodied by this invention increase the bioavailability and the biodegradability of the converted hydrocarbon or organic by as much 2000 percent. Therefore, theoretically a system with biodegradability factor of 80% in 28 days could be improved to 1 to 3 days. It is commonly assumed that if carbon-bearing material exits the environment within 3 to 7 days then it has been consumed and the carbon utilized as bio fuel.
  • the most preferred composition according to this invention of is a mixture an alkali metal oxide, most preferably lime (preferably hydrophobized lime), and a cell transport support agent of Fulvic acid.
  • This invention by the addition of the prescribed non-hazardous chemical treatments in the prescribed manner, convert the entire mass of drill cuttings to a food source (the hydrocarbons, carbon-based polymers, cellulose etc), a source of minerals (calcium, magnesium), a source of nutrients (enzyme like cell transport agent) necessary for growth of the available acclimated micro and macro organisms.
  • a food source the hydrocarbons, carbon-based polymers, cellulose etc
  • a source of minerals calcium, magnesium
  • a source of nutrients enzyme like cell transport agent
  • This process eliminates the organic contamination both known and unknown that occurs in the drilling process and the "mounding" effect characteristic of the all offshore drilling.
  • the drill cuttings treated under the embodied process preferably those generated from the use of synthetic oil based drilling fluid and all water based fluids, are converted into a fine silt like solid which is carried away from the drilling rig by the ocean current and very slowly descends. As the material very slowly descends the finely dispersed and micronized organic contaminants which have been combined with a cell transport and a mineral carbonate are consumed by all available micro and macro organisms natural to the sea environment at the given location.
  • the byproducts of this process are dirt, sand, clay, barite, salt, carbon dioxide and a small amount of biomass, which are natural excrement's of all sea life. This process should take place within 1 to 7 days of initial exit from the rig.
  • the invention relates to a method for treating drilling fluid with organic contaminates comprising the steps of: mixing the drilling fluid with organic contaminates in a high shear mixer; adding to the drilling fluid a solidification agent which expands when hydrated and electrolytically attracts said organic contaminates to its surface; adding a cellulosic additive, wherein the celluslosic additive is a member of the group: ground wood, ground corn, ground wheat, ground cotton, ground rice, ground hemp, ground sugar cane, ground nut shells, ground carboxy methyl cellulose, pulverized recycled paper, and most preferably hibiscus canabinus, in an amount between 1 and 50 wt % based on the amount of said organic contaminate in the drilling fluid, forming a mixture; adding a cell transport agent to the mixture in an amount between 0.5 wt% and 10 wt% based on the amount of said organic contaminate in the drilling fluid, wherein said cell transport agent is capable of transporting large organic molecules through cell walls and neutralizing said mixture to
  • the high shear rate mixing preferably has a duration from 5 minutes to 2 hours per batch, more preferably 10 minutes to 1 hour per batch.
  • the mixing is preferably performed at a temperature between 210°F and 500°F. If a continuous mixing process is used, the preferred flow rate is 30-40 MT per hour.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Lubricants (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Treating Waste Gases (AREA)
PCT/US2002/011880 2001-05-10 2002-05-09 Composition for oil and gas drilling fluids containing organic compounds WO2002092720A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NZ529703A NZ529703A (en) 2001-05-10 2002-05-09 Composition for oil and gas drilling fluids containing organic compounds
EA200301235A EA006189B1 (ru) 2001-05-10 2002-05-09 Композиция для буровых жидкостей, используемых при бурении на нефть и газ и содержащих органические соединения
MXPA03010240A MXPA03010240A (es) 2001-05-10 2002-05-09 Composicion de fluidos de perforacion de pozos petroleros y gas que contiene compuestos organicos.
AU2002316038A AU2002316038C1 (en) 2001-05-10 2002-05-09 Composition for oil and gas drilling fluids containing organic compounds
NO20034989A NO20034989D0 (no) 2001-05-10 2003-11-10 Sammensetning for olje- og gassborev¶ske inneholdende organiske forbindelser

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US28997001P 2001-05-10 2001-05-10
US28996801P 2001-05-10 2001-05-10
US28996901P 2001-05-10 2001-05-10
US28998001P 2001-05-10 2001-05-10
US28997101P 2001-05-10 2001-05-10
US60/289,970 2001-05-10
US60/289,969 2001-05-10
US60/289,968 2001-05-10
US60/289,971 2001-05-10
US60/289,980 2001-05-10

Publications (1)

Publication Number Publication Date
WO2002092720A1 true WO2002092720A1 (en) 2002-11-21

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PCT/US2002/011880 WO2002092720A1 (en) 2001-05-10 2002-05-09 Composition for oil and gas drilling fluids containing organic compounds

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AU (1) AU2002316038C1 (no)
EA (1) EA006189B1 (no)
MX (1) MXPA03010240A (no)
NO (1) NO20034989D0 (no)
NZ (1) NZ529703A (no)
WO (1) WO2002092720A1 (no)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067668A1 (en) * 2005-12-08 2007-06-14 Hercules Incorporated Solvent free fluidized polymer suspensions for oilfield servicing fluids
CN102277145A (zh) * 2011-06-03 2011-12-14 西南石油大学 油气井储层堵水、堵漏、暂闭封堵镁氧水泥浆及制备方法
WO2016112425A1 (en) 2015-01-14 2016-07-21 Calix Ltd Improved pathogen inhibitor
NO342424B1 (no) * 2005-12-08 2018-05-22 Hercules Inc Suspensjonssammensetning omfattende et oljefeltbetjeningsfluid og en fluidpolymersuspensjon

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4176720A (en) * 1978-07-27 1979-12-04 Atlantic Richfield Company Well cementing in permafrost
US5314022A (en) * 1992-10-22 1994-05-24 Shell Oil Company Dilution of drilling fluid in forming cement slurries
US6059035A (en) * 1998-07-20 2000-05-09 Halliburton Energy Services, Inc. Subterranean zone sealing methods and compositions
US6152227A (en) * 1997-10-24 2000-11-28 Baroid Technology, Inc. Drilling and cementing through shallow waterflows
US6182758B1 (en) * 1999-08-30 2001-02-06 Halliburton Energy Services, Inc. Dispersant and fluid loss control additives for well cements, well cement compositions and methods

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176720A (en) * 1978-07-27 1979-12-04 Atlantic Richfield Company Well cementing in permafrost
US5314022A (en) * 1992-10-22 1994-05-24 Shell Oil Company Dilution of drilling fluid in forming cement slurries
US6152227A (en) * 1997-10-24 2000-11-28 Baroid Technology, Inc. Drilling and cementing through shallow waterflows
US6059035A (en) * 1998-07-20 2000-05-09 Halliburton Energy Services, Inc. Subterranean zone sealing methods and compositions
US6182758B1 (en) * 1999-08-30 2001-02-06 Halliburton Energy Services, Inc. Dispersant and fluid loss control additives for well cements, well cement compositions and methods

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067668A1 (en) * 2005-12-08 2007-06-14 Hercules Incorporated Solvent free fluidized polymer suspensions for oilfield servicing fluids
NO342424B1 (no) * 2005-12-08 2018-05-22 Hercules Inc Suspensjonssammensetning omfattende et oljefeltbetjeningsfluid og en fluidpolymersuspensjon
CN102277145A (zh) * 2011-06-03 2011-12-14 西南石油大学 油气井储层堵水、堵漏、暂闭封堵镁氧水泥浆及制备方法
WO2016112425A1 (en) 2015-01-14 2016-07-21 Calix Ltd Improved pathogen inhibitor
CN107105671A (zh) * 2015-01-14 2017-08-29 卡利有限公司 改进的病原体抑制剂
EP3244735A4 (en) * 2015-01-14 2018-07-04 Calix Ltd Improved pathogen inhibitor
EP3735828A1 (en) * 2015-01-14 2020-11-11 Calix Limited Improved pathogen inhibitor

Also Published As

Publication number Publication date
EA200301235A1 (ru) 2004-06-24
AU2002316038B2 (en) 2008-03-20
NO20034989D0 (no) 2003-11-10
EA006189B1 (ru) 2005-10-27
NZ529703A (en) 2006-03-31
AU2002316038C1 (en) 2009-01-22
MXPA03010240A (es) 2005-03-07

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