Organic Component Contains Silicon Attached Directly Or Indirectly To Carbon By Nonionic Bonding Patents (Class 507/127)
  • Patent number: 10731071
    Abstract: Methods and compositions comprising an emulsion or a microemulsion for use in various aspects of the life cycle of an oil and/or gas well are provided. In some embodiments, the emulsion or the microemulsion comprises water, a solvent, and a surfactant, and optionally, one or more additives. In some embodiments, methods for preventing, reducing, or eliminating a crude oil emulsion in an oil and/or gas well are provided.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 4, 2020
    Assignee: Flotek Chemistry, LLC
    Inventors: Hasnain Saboowala, Randal M. Hill, Angus Fursdon-Welsh
  • Patent number: 9284828
    Abstract: A method for increasing extraction of oil, gas and gas condensates from deposits includes the steps of pumping a working fluid into a well, wherein the working fluid is an organic solvent comprising at least one aromatic hydrocarbon, at least one carboxylic acid and at least one organic acid, adjusting a density of the working fluid based at least in part on a density of formation fluid, and adjusting a viscosity of the working fluid based at least in part on desired degree of penetration of the working fluid into surrounding formation layers.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: March 15, 2016
    Inventor: Alexander Petrovich Linetskiy
  • Patent number: 9234415
    Abstract: A wellbore fluid comprises an aqueous carrier liquid, hydrophobic particulate material suspended therein and a gas to wet the surface of the particles and bind them together as agglomerates. The hydrophobic particulate material has a specified maximum volume median particle size d50 of not more than 200 micron, and/or a minimum surface area of at least 30 m2 per liter. Agglomerates of the particles contain gas and so have a bulk density lower than the density of the particles. This reduces the rate of settling. The fluid is particularly envisaged as a slickwater fracturing fluid in which the suspended particles are proppant. The small particle size and/or substantial surface area increases the amount of gas which can be retained within agglomerates and so enhances the buoyancy of the agglomerates. The end result is that a greater proportion of a hydraulic fracture is propped open.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: January 12, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Patent number: 9133385
    Abstract: A method for enhancing the rheology of drilling fluids that is effective for any mud weight “clay-free” invert emulsion drilling fluid, even when drilling at high temperatures. The improved rheology is effected with addition of a silicon oil to the drilling fluid. A nonlimiting example of such a rheology additive comprises polydimethylsiloxane.
    Type: Grant
    Filed: September 30, 2012
    Date of Patent: September 15, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vikrant Bhavanishankar Wagle, Sharath Savari, Sandeep D. Kulkarni
  • Patent number: 8969263
    Abstract: A treatment fluid comprises: water; a carboxylate; and a corrosion inhibitor, wherein the corrosion inhibitor is a polymer, wherein the polymer comprises silicone, an ether monomer residue, and an amine functional group; wherein a test fluid consisting essentially of the water, the carboxylate, and the corrosion inhibitor, and in the same proportions as in the treatment fluid, is capable of providing a corrosion weight loss to a metal plate of less than 0.05 pounds per square feet (lb/ft2) under testing conditions of 200° F. (93.3° C.), a pressure of 500 psi (3.4 MPa), and a time of 24 hours whereas a substantially identical test fluid without the corrosion inhibitor provides a corrosion weight loss of greater than 0.05 lb/ft2 under the testing conditions. A method of treating a portion of a well comprises: forming the treatment fluid; and introducing the treatment fluid into the well.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: March 3, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Garima Misra, Arunesh Kumar
  • Publication number: 20140323362
    Abstract: Defoamer compositions are disclosed and methods for making and using same, where the defoamer has universal applicability at low concentrations. The defoamer compositions include between 40 vol. % and about 80 vol. % distilled water (other waters may be used instead), 10 vol. % and about 30 vol. % of silicon anti-foam agent and between about 10 vol. % and about 30 vol. % of active silicon anti-foam agent. The defoamer compositions are used in amount of less than or equal to 200 ppm in all foamed downhole fluid systems.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Applicant: CLEARWATER INTERNATIONAL, LLC
    Inventors: Olusegun Matthew Falana, Edward C, Marshall, Frank Zamora
  • Patent number: 8871689
    Abstract: A method of drilling is disclosed and includes pumping a wellbore fluid into a wellbore through an earth formation, wherein the wellbore fluid comprises a base fluid and a surface active agent capable of altering wettability of fines located in the earth formation, and allowing filtration of at least a portion of the wellbore fluid into the earth formation.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: October 28, 2014
    Assignees: Schlumberger Norge AS, Statoil ASA
    Inventors: Russell B. Watson, Patrick Viste, Niall Fleming, Kari Ramstad, Anne Mette Mathisen, Nils Kaageson-Loe
  • Publication number: 20140121134
    Abstract: A method comprising drilling a wellbore into a subterranean formation; providing a drilling fluid comprising an aqueous base fluid and a property control package, the property control package comprising: a stabilizing agent; a filtration control agent; and a suspension enhancer; introducing the drilling fluid into the wellbore in the subterranean formation; and continuously circulating the drilling fluid during the drilling of the wellbore.
    Type: Application
    Filed: October 30, 2012
    Publication date: May 1, 2014
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Laura P. Kuri, Charles Landis, Ryan Collins, David M. Donald
  • Patent number: 8703658
    Abstract: A drilling fluid comprising: a non-ionic surfactant including: a branched alcohol ethoxylate and/or a capped alcohol ethoxylate; and a detergent builder.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: April 22, 2014
    Assignee: Canadian Energy Services L.P.
    Inventor: Carl Keith Smith
  • Publication number: 20140090896
    Abstract: A method for enhancing the rheology of drilling fluids that is effective for any mud weight “clay-free” invert emulsion drilling fluid, even when drilling at high temperatures. The improved rheology is effected with addition of a silicon oil to the drilling fluid. A nonlimiting example of such a rheology additive comprises polydimethylsiloxane.
    Type: Application
    Filed: September 30, 2012
    Publication date: April 3, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Vikrant Bhavanishankar Wagle, Sharath Savari, Sandeep D. Kulkarni
  • Publication number: 20130264121
    Abstract: Methods and compositions for use in drilling a wellbore into an earthen formation that includes the use of a graphene-based material, where the graphene-based material may be at least one of graphene, graphene oxide, chemically converted graphene, and derivatized graphite oxide are shown and described. In certain examples, the methods and compositions reduce permeability damage and/or stabilize shales.
    Type: Application
    Filed: October 6, 2011
    Publication date: October 10, 2013
    Applicants: WILLIAM MARSH RICE UNIVERSITY, M-I L.L.C.
    Inventors: Steve Young, James Friedheim, Arvind D. Patel, James Tour, Dmitry Kosynkin
  • Patent number: 8524639
    Abstract: Complementary surfactant systems and downhole fluids made using the systems are disclosed along with methods for making and using same, where the surfactant systems include from 0 wt. % to 100 wt. % of a first surfactant subsystem, from 100 wt. % to 0 wt. % of a second surfactant subsystem, and from 0 wt. % to 100 wt. % of a solvent subsystem based on the wt. % of the surfactant subsystems, where the system is tailored to foam the fluid including the analyzed crude and/or condensate.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: September 3, 2013
    Assignee: Clearwater International LLC
    Inventors: Olusegun Matthew Falana, Edward C. Marshall, Frank Zamora
  • Patent number: 8524641
    Abstract: A composition for providing a stable foam with high tolerance to hydrocarbons includes (a) an aqueous liquid; (b) at least one water soluble or dispersible silicon-containing polyether foamant contained within the aqueous liquid; and (c) a non-aqueous liquid. The aqueous liquid includes water and brine. The non-aqueous liquid includes liquid hydrocarbons.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: September 3, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Kalman Koczo, Oleg Tselinik, Benjamin Falk, George A. Policello
  • Publication number: 20120322695
    Abstract: Method for controlling lost circulation in a subterranean well using oil-dispersible lost-circulation materials which comprise fibers that are coated (or sized) with a lipophilic coupling agent, a lipophilic film-forming polymer or both. The fibers are preferably between about 6 mm and about 25 mm long, and between about 10 ?m and about 200 ?m in diameter. The fibers may be added to carrier fluids comprising oil-base fluids, synthetic-base fluids, invert-emulsion-base fluids and combinations thereof. The preferred fiber concentration in the carrier fluid is between about 0.55 g/L and about 28.5 g/L. The carrier fluid may be a drilling fluid, a spacer fluid or a lost-circulation pill.
    Type: Application
    Filed: December 3, 2010
    Publication date: December 20, 2012
    Inventors: Slaheddine Kefi, Jesse C. Lee, Chrystel Brunet-Cambus, Nikhil Shindgikar
  • Patent number: 8293686
    Abstract: A water-based polymer drilling fluid, containing effective quantities of surfactants having HLB numbers equal to or greater than approximately 7, emulsifies oil and bitumen contained in oil sand cuttings, resulting in the oil and bitumen being dispersed into the mud as an emulsion. This eliminates or significantly reduces the ability of the oil, bitumen, and cuttings to clog the well or stick to drill string components when drilling a well through oil-bearing sands, particularly sands containing highly viscous oil or bitumen. The emulsification process separates the sand particles from the oil and bitumen, such that the sand particles can be removed when the mud is run through a conventional shale shaker or other suitable apparatus.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: October 23, 2012
    Assignee: Marquis Alliance Energy Group Inc.
    Inventors: An-Ming Wu, Jay Brockhoff
  • Patent number: 8217130
    Abstract: Disclosed herein is a curable composition excellent in workability, adhesion properties, rubber-like properties, storage stability, and quick curability. The curable composition comprises (A) a crosslinkable silyl group-containing organic polymer and (B) a (meth)acrylic polymer obtained by polymerizing a (meth)acrylic monomer having a polymerizable unsaturated bond in the presence of a metallocene compound and a crosslinkable silyl group-containing thiol compound, at least one end of the (meth)acrylic polymer being bonded to a residue, —S—R3 (where R3 represents a group having a crosslinkable silyl group) obtained by removing a hydrogen atom from the crosslinkable silyl group-containing thiol compound.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: July 10, 2012
    Assignee: Cemedine Co., Ltd.
    Inventors: Atsushi Saito, Tomonori Saito, Naomi Okamura
  • Patent number: 8193124
    Abstract: A wellbore fluid that includes an oleaginous base fluid; and a silanated weighting agent is disclosed. In particular, the silanated weighting agents may be produced by reaction between an alkyl alkoxy silane and a weighting agent Methods of formulating such fluids and methods of drilling using such fluids are also disclosed.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: June 5, 2012
    Assignee: M-I L.L.C.
    Inventors: Sashikumar Mettath, Steven Young
  • Patent number: 8003579
    Abstract: A process for preparing a binder which comprises a heterocondensate of silicon compounds and metal and/or boron compounds. The process comprises mixing a silicon component which comprises (A), at least one hydrolyzable silicon compound having a non-hydrolyzable polymerizable group, with water to form a hydrolysis product, and 15 s to 15 min after mixing (A) with water, the addition of (B), at least one compound of boron or a metal selected from Al, Ga, In, Tl, Ge, Ga, Sn, Pb, Ti, Zr, Hf, Sc, Y and La.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: August 23, 2011
    Assignee: EPG (Engineered nanoProducts Germany) AG
    Inventors: Murat Akarsu, Helmut Schmidt
  • Patent number: 8003576
    Abstract: This invention relates to improved lubrication in drilling and completion fluids used in subterrane drilling for oil and gas. The addition of zinc dialkyl dithiophosphate (ZDDP) acts as a lubricant, an enhancer to other lubricants and rate of penetration enhancer.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: August 23, 2011
    Assignee: The Lubrizol Corporation
    Inventor: Michael J. McDonald
  • Patent number: 7989399
    Abstract: A drilling fluid comprising: a non-ionic surfactant including at least one of a branched alcohol ethoxylate and a capped alcohol ethoxylate, a detergent builder and a viscosifier.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: August 2, 2011
    Assignee: Techstar Energy Services Inc.
    Inventors: Stefan Alexandru Stoian, Carl Keith Smith
  • Patent number: 7951755
    Abstract: A water-based polymer drilling fluid, containing effective quantities of surfactants having HLB numbers equal to or greater than approximately 7, emulsifies oil and bitumen contained in oil sand cuttings, resulting in the oil and bitumen being dispersed into the mud as an emulsion. This eliminates or significantly reduces the ability of the oil, bitumen, and cuttings to clog the well or stick to drill string components when drilling a well through oil-bearing sands, particularly sands containing highly viscous oil or bitumen. The emulsification process separates the sand particles from the oil and bitumen, such that the sand particles can be removed when the mud is run through a conventional shale shaker or other suitable apparatus.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: May 31, 2011
    Inventors: An-Ming Wu, Jay Brockhoff
  • Patent number: 7915203
    Abstract: A new class of secondary emulsifying agents for use in inverted mud and other inverted system is disclosed and method for making and using same.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: March 29, 2011
    Assignee: Clearwater International, LLC
    Inventors: Olusegun Matthew Falana, Arthur T. Gilmer, Edward Marshall
  • Publication number: 20110021384
    Abstract: A method of drilling is disclosed and includes pumping a wellbore fluid into a wellbore through an earth formation, wherein the wellbore fluid comprises a base fluid and a surface active agent capable of altering wettability of fines located in the earth formation, and allowing filtration of at least a portion of the wellbore fluid into the earth formation.
    Type: Application
    Filed: November 27, 2008
    Publication date: January 27, 2011
    Applicants: M-I SWACO NORGE AS, STATOIL ASA
    Inventors: Russell B. Watson, Patrick Viste, Niall Fleming, Kari Ramstad, Anne Mette Mathisen, Nils Kaageson-Loe
  • Publication number: 20100311619
    Abstract: A wellbore fluid that includes an oleaginous base fluid; and a silanated weighting agent is disclosed. In particular, the silanated weighting agents may be produced by reaction between an alkyl alkoxy silane and a weighting agent Methods of formulating such fluids and methods of drilling using such fluids are also disclosed.
    Type: Application
    Filed: January 22, 2009
    Publication date: December 9, 2010
    Applicant: M-I L.L.C.
    Inventors: Sashikumar Mettath, Steven Young
  • Publication number: 20100197526
    Abstract: An aqueous slurry composition for use in industries such as the petroleum and pipeline industries includes a particulate, an aqueous liquid and a chemical compound that renders the particulate surface extremely hydrophobic. The slurry is produced by rendering the surface of the particulate extremely hydrophobic during or before making the slurry.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 5, 2010
    Inventor: Kewei Zhang
  • Publication number: 20100113308
    Abstract: Hydrocarbon fluid compositions comprising a liquid hydrocarbon, an aluminum soap, a hydrocarbon foaming agent and a gas. The fluids can be used in various oil field operations.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 6, 2010
    Inventors: Kewei Zhang, Bill O'Neil, Darren Maley
  • Patent number: 7576039
    Abstract: Subject matter of the present invention is a drilling fluid additive based on sulfonated asphalt, which comprises a water soluble and anionic polymer component in quantities of 0.1 to 20 wt. %, with respect to the total additive in addition to the asphalt component. With this additive the water solubility of sulfonated asphalt can be markedly increased. This additive, whose polymer component is thermally highly stable, is utilized primarily in water- and/or oil-based drilling fluids and in particular in the exploration of subterraneous petroleum and natural gas deposits. Typical polymer components to consider are representatives of polycondensation products, such as phenol resins, ketone resins and sulfonated naphthalene, acetone and amino plasticizer resins (for example urea and melamine resins).
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 18, 2009
    Assignee: BASF Construction Polymers GmbH
    Inventors: Johann Huber, Johann Plank, Jürgen Heidlas, Gregor Keilhofer, Peter Lange
  • Patent number: 7470419
    Abstract: The present application relates to granules of powdery mineral particles produced by spray granulation of a liquid slurry comprising powdery minerals particles having particle size below 10 m, at least one water-reducing agent and/or at least one binder agent and/or at least one dispersing agent. The application further relates to a method for producing such granules.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: December 30, 2008
    Assignee: Elkem AS
    Inventor: Tor Soyland Hansen
  • Patent number: 7452849
    Abstract: A silicone MQ resin based composition provides the oil industry with Fluid Loss Control (FLC) additives for water based drilling muds which are non-damaging. The composition is capable of achieving zero fluid seepage through filter cake, and a short build time for the initial filter cake, while not reducing the return flow of oil from producing formations. The composition is stable in saturated salt at 120° C. and elevated pressures. The composition comprises solid particles of silicone resin with a glass transition temperature more than 70° C., and it contains solid particles of silicone resin with a particle size distribution in which ( ) at least 90 volume percent of solid particles of silicone resin have an average major axis diameter of 40 ?m or less than 40 ?m, and (ii) at least 10 volume percent of solid particles of silicone resin have an average major axis diameter of 2 ?m or less.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: November 18, 2008
    Assignee: Dow Corning Corporation
    Inventors: Vicki Lynn Berry, Julie Lyn Cook, Susan J. Gelderbloom, Diane Marie Kosal, Donald Taylor Liles, Charles W. Olsen, Jr., Christian Francis C. Rome
  • Publication number: 20080280786
    Abstract: A method of servicing a wellbore comprising contacting a solid defoamer/antifoamer composition with a wellbore servicing fluid, wherein the solid defoamer/antifoamer composition comprises at least one water-insoluble compound or slightly water-soluble compound having defoaming/antifoaming activity and at least one emulsifier, and placing the wellbore servicing fluid in the wellbore.
    Type: Application
    Filed: May 7, 2007
    Publication date: November 13, 2008
    Applicant: Halliburton Energy Services, Inc.
    Inventors: B. Raghava Reddy, Ronald E. Sweatman, Lucas Fontanelle
  • Patent number: 7316991
    Abstract: The invention relates to a composition for use in the extraction of oil and to a method of extracting oil using the composition. The composition comprises components A, B and C in which: A is a first solid hydrophobic material which is in-soluble in an organic solvent selected from light fractions of petroleum, distillate, kerosene, acetone, gasoil, hexane, benzene and condensate; B is a second hydrophobic material which is either soluble in or can be emulsified with an organic solvent selected from light fractions of petroleum, distillate kerosene, acetone, gasoil, hexane, benzene and condensate; and C is a retention improving material comprising a mineral material. A solvent, D, is added before the composition is used to treat an oil well. In oil well systems in which water or surfactant is pumped into the stratum through an injection well under pressure so that petroleum is forced from the rock stratum into the bottom hole zone of an extraction well, the composition is added to the extraction well.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: January 8, 2008
    Assignee: Enhanced Recovery Systems Limited
    Inventors: Sergei Poletaev, Anatoly Demakhin
  • Patent number: 6997270
    Abstract: A method is disclosed that affords improved stability to wellbores during drilling in argillaceous formations with water-based drilling fluids. The method comprises adding to the drilling fluid a compound of the invention having the capacity in water to generate a highly efficient membrane on argillaceous materials. The compound is soluble in the drilling fluid at least at the pH at which the compound is added to the drilling fluid or exists in the drilling fluid, but is insoluble in the water in the pores of the argillaceous formations, or at least at the pH of the water in such pores.
    Type: Grant
    Filed: December 30, 2000
    Date of Patent: February 14, 2006
    Assignees: Halliburton Energy Services, Inc.
    Inventors: Fersheed K. Mody, Kenneth W. Pober, Chee P. Tan, Calum J. Drummond, George Georgaklis, Darrell Wells
  • Publication number: 20040123985
    Abstract: A method is provided for reducing loss of drilling fluid and for stabilizing a wellbore during drilling through depleted sands in a subterranean formation comprising depleted sands. The method comprises introducing into said wellbore and into said depleted sands an aqueous fluid comprising silicate or siliconate and resilient graphitic carbon in an amount effective at substantially plugging pores in said depleted sands.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventors: Donald L. Whitfill, Kenneth W. Pober, Thomas R. Carlson, Uday A. Tare, James V. Fisk, Joe L. Billingsley
  • Patent number: 6649571
    Abstract: Disclosed is a method of generating microbubbles in oleaginous liquids which comprises adding a silicone oil to the oleaginous liquid and thereafter subjecting the liquid to mechanical forces in the presence of a gas. Also disclosed are oil base well drilling and servicing fluids having a low shear rate viscosity as measured with a Brookfield Viscometer at 0.5 rpm of at least 10,000 centipoise and having incorporated therein microbubbles generated by the disclosed method, and a method of drilling a well wherein there is circulated within the wellbore during drilling the oil base, microbubble-containing fluid disclosed.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: November 18, 2003
    Assignee: Masi Technologies, L.L.C.
    Inventor: Julie Benedetta Maria Aline Morgan
  • Patent number: 6211119
    Abstract: The invention relates to multiphase lubricant concentrates with improved properties for use in aqueous fluids for geological exploration by drilling which contain organic lubricating components which are solid and/or liquid at room temperature (O phase) together with emulsifiers finely dispersed in a continuous aqueous phase (W phase). These concentrates are characterized in that the system of O phase/W phase and emulsifiers has a phase inversion temperature (PIT) above room temperature and has been produced by heating the multiphase system to temperatures equal to or above the PIT and subsequent cooling to temperatures below the PIT. The present invention also relates to the use of the multiphase lubricant concentrates as an additive in water-based fluids for use in geological exploration by drilling and for the subsequent treatment of the resulting boreholes.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: April 3, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Claus-Peter Herold, Heinz Mueller, Thomas Foerster, Stephan Von Tapavicza, Marcus Claas
  • Patent number: 5888944
    Abstract: A method of removing the filter cake formed from invert emulsion compositions including an oleaginous, a non-oleaginous and an acid sensitive surfactant in an oil and gas well are disclosed. The acid sensitive surfactant is selected so that the invert emulsion can be broken and residual filter cake solids made water-wet upon the addition of an acidic wash fluid to the well.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: March 30, 1999
    Assignee: MI L.L.C.
    Inventor: Arvind D. Patel
  • Patent number: 5869433
    Abstract: The present invention relates to an oil-based drilling fluid, a continuous phase for an oil-based drilling fluid, and additives for an oil-based drilling fluid. The drilling fluid, the continuous phase of the drilling fluid, and the additives for the oil-based drilling fluid are characterized by non-fluorescence (defined as a fluorescence intensity of 800 or less) when exposed to ultraviolet light. The continuous phase of the drilling fluid is composed of synthetic hydrocarbons selected from the group consisting of oligomers synthesized from one or more alphaolefins containing a C.sub.2 to C.sub.14 chain length, wherein the oligomers have an average molecular weight of from 120 to 100, and additives. The additives of the continuous phase include surfactants, wetting agents and/or emulsifiers.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: February 9, 1999
    Assignee: M-I L.L.C.
    Inventor: Arvind D. Patel
  • Patent number: 5712228
    Abstract: An essentially non-polluting, substantially non-toxic drilling fluid composition has been discovered that is particularly useful as a lubricant or spotting fluid in drilling oil and gas wells. The fluid comprises silicone which may be is mixed with an emulsifier for application in the water base mud system.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: January 27, 1998
    Assignee: M-I Drilling Fluids L.L.C.
    Inventor: Arvind D. Patel
  • Patent number: 5707939
    Abstract: The present invention relates to an improved continuous phase for a drilling fluid and specifically a silicone continuous phase which is non-polluting and substantially non-toxic. Preferred silicones for use in the invention are dimethylsiloxane polymers. In the drilling fluid compositions, suitable emulsifiers, wetting agents, viscosifiers, weight materials and fluid loss additives may be added in conjunction with water and/or a brine phase for desired rheological properties.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: January 13, 1998
    Assignee: M-I Drilling Fluids
    Inventor: Arvind D. Patel
  • Patent number: 5491248
    Abstract: Readily dispersible bentonite comprising bentonite particles having adsorbed an alkyl-substituted silane compound represented by formula (I) onto the surface thereof is disclosed:R.sub.a SiX.sub.b (I)wherein R represents an alkyl group having 1 to 18 carbon atoms; X represents a methoxy group, an ethoxy group or a halogen atom; a and b each represents 1, 2 or 3, provided that (a+b) is 4; in an amount of not more than 1% by weight based on the bentonite. When poured into water and stirred, the treated bentonite is rapidly dispersed while minimizing formation of hardly dispersible lumps of powder to provide an aqueous bentonite dispersion exhibiting satisfactory viscosity and water impermeability.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: February 13, 1996
    Assignee: Hojun Kogyo Co., Ltd.
    Inventors: Mitsuji Kondo, Takeo Sawada
  • Patent number: 5401719
    Abstract: A drilling mud additive comprising graphite, a silicate such as phlogopite and a silicone such as dimethylpolysiloxane and drilling muds including the additive.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: March 28, 1995
    Assignee: Chemical Services Limited
    Inventor: Johannes M. DeBeer
  • Patent number: 5376629
    Abstract: An oil based drilling mud comprises (a) a base oil, (b) about 1 to about 170 parts by weight of an aqueous phase per 100 parts by weight of the oil, (c) about 0.25-40 g/l of at least one viscosifier, and (d) a hydrophobic weighting agent in amount sufficient to achieve a required mud density.The hydrophobic weighting agent is preferably barite. The drilling muds do not contain emulsifiers or oil wetting agents and are particularly advantageous in their reduction in oil retention on cuttings and smaller reduction in permeability of oil bearing formations.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: December 27, 1994
    Assignee: British Petroleum Company P.L.C.
    Inventor: Phillip S. Smith
  • Patent number: 5189012
    Abstract: The present invention relates to an improved continuous phase for an oil based drilling fluid and specifically a synthetic hydrocarbon continuous phase which is non-polluting and minimally toxic. The invention provides excellent drilling fluid properties under a wide variety of drilling conditions. The synthetic hydrocarbons are selected from the group consisting of branched chain oligomers synthesized from one or more olefins containing a C.sub.2 to C.sub.14 chain length and wherein the oligomers have an average molecular weight of from 120 to 1000. In the drilling fluid compositions, suitable emulsifiers, wetting agents, viscosifiers, weight materials and fluid loss additives are utilized in conjunction with water and/or a brine phase for the desired rheological properties.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: February 23, 1993
    Assignee: M-I Drilling Fluids Company
    Inventors: Arvind D. Patel, Raymond E. McGlothlin, Roger D. Bleier, H. N. Brinkley