Abstract: Drilling fluids and methods of making and using drilling fluids are provided. The drilling fluid includes an emulsion comprising an oleaginous phase suspended within an aqueous phase, a clay-based component in the aqueous phase, CaCl2, KCl, or both in the aqueous phase, and a polyglycerol-fatty acid complex. The polyglycerol-fatty acid complex may be free of covalent crosslinks. The polyglycerol-fatty acid complex may include polyglycerol hydrogen bonded to a fatty acid, and the oleaginous phase may include safra oil and the polyglycerol-fatty acid complex. Methods of producing the drilling fluid include reacting polyglycerol and a fatty acid at a temperature of less than 250° C. thereby forming a polyglycerol-fatty acid complex. The method further includes mixing an aqueous phase, a clay-based component, and the polyglycerol-fatty acid complex to produce a drilling fluid.
Type:
Grant
Filed:
September 11, 2019
Date of Patent:
June 1, 2021
Assignee:
Saudi Arabian Oil Company
Inventors:
Jothibasu Ramasamy, Md Amanullah, Abdullah Saleh Al-Yami, Ali Radhwan
Abstract: A method may include providing a cement composition comprising ground vitrified clay, hydrated lime, and water; and introducing the cement composition into a subterranean formation.
Type:
Grant
Filed:
August 26, 2019
Date of Patent:
May 11, 2021
Assignee:
Halliburton Energy Services, Inc.
Inventors:
Thomas Jason Pisklak, Claudia Carmen Pineda
Abstract: A method begins with the step of preparing a drag-reducing additive by mixing a dispersion polymer with a surfactant and a solvent. The method continues with the step of forming a drag-reducing composition by combining the drag-reducing additive with an aqueous treatment fluid. The method further involves the step of injecting the drag-reducing composition into a subterranean formation, a pipeline or a gathering line.
Type:
Grant
Filed:
November 30, 2018
Date of Patent:
May 11, 2021
Assignee:
Flotek Chemistry, LLC
Inventors:
Andrei Zelenev, Lakia Champagne, David Philpot
Abstract: A converter-dissolver composition in an aqueous solution of carbonate or bicarbonate, chelating agents, hydroxide base, and surfactant wetting agent. A mixture of the chelating agents and carbonate or bicarbonate is diluted with deionized water. The mixture reacts for five minutes. The hydroxide base is added to the mixture to form an in-situ reaction with the carbonate or bicarbonate and reacted for another five minutes. The solution pH is adjusted with the chelating agent. The surfactant wetting agent is added. The aqueous solution is heated to 70-230° C. and applied to a surface of oil or gas well and pipeline equipment with metal sulfate scales in a ratio of 3.78 liters of the aqueous solution per 0.45 kilograms of the metal sulfate scales. The aqueous solution reacts for 0.25-1.5 hours to dissolve the metal sulfate scales. The aqueous solution and dissolved metal sulfate scales are flushed from the surface.
Type:
Grant
Filed:
August 5, 2016
Date of Patent:
April 20, 2021
Assignee:
NuGeneration Technologies, LLC
Inventors:
Stephen Utschig-Samuels, Donato Polignone
Abstract: A well treatment fluid composition that includes a tetrakis(hydroxyorgano)phosphonium salt and 1,3-dimethylol-5,5-dimethylhydantoin. Methods for preparing a well treatment fluid composition and treating a subterranean formation are also presented.
Type:
Grant
Filed:
December 6, 2016
Date of Patent:
April 6, 2021
Assignee:
SOLVAY USA INC.
Inventors:
Christopher Raymond Jones, Stéphanie Edmunds, Jean C. Molina
Abstract: A method to reduce the viscosity of viscosified treatment fluids is disclosed herein. The method includes a water soluble polymer as viscosifying agent, preferably a synthetic water soluble polymer, optionally a crosslinker for the water soluble polymer, a breaker system containing an organic peroxide, mixing the viscosified treatment fluid and the breaker composition and allowing the viscosified treatment fluid and the breaker composition to interact whereby the viscosity of the viscosified treatment is reduced. The application of the process in the production of oil and gas is also discussed.
Abstract: A method for preparing an anionic thermoviscosifying water-soluble polymer includes the following steps: performing an inverse emulsion polymerization by using acrylamide, acrylic acid and Pluronic triblock polymer. The high reactivity of acrylamide and the inverse emulsion polymerization can increase the molecular weight of the thermoviscosifying polymer, and exhibit an obvious thermoviscosifying effect even at a low polymer concentration, which can reduce the application cost. The dissolution rate of the obtained polymer emulsion is significantly higher than the dissolution rate of the dry powder of the polymer. The obtained emulsion-diluted solution has a relatively strong thermoviscosifying behavior after further adding a small amount of reverse demulsifier, and the emulsion-diluted solution exhibits different thermoviscosifying behaviors as the amount of the reverse demulsifier is increased.
Abstract: A method to reduce the viscosity of viscosified treatment fluids is disclosed herein. The method includes a water soluble polymer, a breaker system containing at least one aliphatic azo-compound, mixing the viscosified treatment fluid and the breaker composition and allowing the viscosified treatment fluid and the breaker composition to interact whereby the viscosity of the viscosified treatment is reduced. The application of the process in the production of oil and gas and to the treatment fluids is also discussed.
Abstract: Certain sugars, when exposed to high temperatures, undergo oxidation to produce acidic species. Certain sugar alcohols are also acid precursors. The acidification process is a function of temperature, salinity, pH, and/or the presence of an agent, such as an accelerator or a retarder. The rate of acidification may be controlled within a filter cake breaker fluid in order to achieve a predetermined fluid pH after a selectable period of time. The time controllable nature of the acidification allows the development of filter cake breaker fluids with an engineered activity delay.
Type:
Grant
Filed:
September 13, 2018
Date of Patent:
March 2, 2021
Assignee:
Baker Hughes Holdings LLC
Inventors:
James R. Allensworth, Moctesuma R. Trevino, Marshall Chiasson
Abstract: Proppant dust suppression compositions including: (a) at least one sugar alcohol ester or a sugar alcohol esters or a plurality of sugar alcohol esters; or (b) a mixture of at least one glyceride or a glyceride or a plurality of glycerides and at least one sugar alcohol ester or a sugar alcohol esters or a plurality of sugar alcohol esters and methods for using the compositions, where the treated proppant composition has between about 30% and 100% proppant dust reduction and wherein the at least one sugar alcohol ester improves flowability of treated proppant so that the treated proppant has reduced screen out propensity.
Type:
Grant
Filed:
June 8, 2018
Date of Patent:
February 16, 2021
Assignee:
NexTier Completion Solutions Inc.
Inventors:
Sarkis Kakadjian, Jose Garza, Marvin Solomon
Abstract: The invention relates to the field of drilling fluid, and provides a multi-functional weighting agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof, wherein the multi-functional weighting agent is an polyacrylamide/modified barium sulfate composite multi-functional weighting agent prepared by sequentially dropwise adding acrylamide and ammonium persulfate to a mixture of modified barium sulfate and deionized water in a presence of an initiator.
Type:
Grant
Filed:
November 6, 2019
Date of Patent:
December 15, 2020
Assignee:
Southwest Petroleum University
Inventors:
Yang Bai, Pingya Luo, Yan Cheng, Jinsheng Sun, Guancheng Jiang
Abstract: A composition for use in a wellbore activity, the composition comprising a stabilized monovalent iodide brine, the stabilized monovalent iodide brine comprises a monovalent salt system, the monovalent salt system comprises a monovalent iodide; a primary iodide stabilizer, the primary iodide stabilizer operable to remove free iodine, prevent the formation of free iodine, and suppress TCT; and an aqueous fluid, where the stabilized monovalent iodide brine has a density greater than 10 lb/gal, where the stabilized monovalent iodide brine has a TCT of less than or equal to 70 deg F.
Abstract: A composition for viscosifying a nonaqueous base liquid. The composition has an alkoxylated alcohol having the general formula: X—O—(CnH2nO)y-(C2H4O)z—H wherein X is an organyl group having from 3 to 40 carbon atoms, n is 2, 3 or 4, y is 0 to 6, and z is 3-20, and an organophilic clay. The base liquid is an oleaginous liquid which is liquid at 25° C. and is substantially immiscible in water.
Abstract: A modified nano graphite, a polymer composite material of the modified nano graphite, and use of the polymer composite material in a high temperature and high salinity oil reservoir.
Type:
Grant
Filed:
January 24, 2020
Date of Patent:
November 10, 2020
Assignees:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), SHENGLI OILFIELD BRANCH, CHINA PETROLEUM & CHEMICAL CO., LTD, NORTHWEST OILFIELD BRANCH, CHINA PETROLEUM & CHEMICAL CO., LTD, CHINA UNIVERSITY OF GEOSCIENCES (BEIJING)
Abstract: A method for inhibiting corrosion in pipelines for transporting oil and gas is described. A nano-machine is fed along with an inert gas to the pipeline to deliver a corrosion inhibitor which is chemically bonded to the nano-machine. The nano-machine is made by attaching a corrosion inhibitor to a nanoparticle by way of a covalent bond. When the nano-machine encounters a source of corrosion in the pipeline, the corrosion inhibitor is released to treat the corrosion.
Abstract: A composition including a coated nanoparticle and an ion, wherein the coated nanoparticle includes a nanoparticle, a linker, and a stabilizing group; methods of making and using the composition; and systems including the composition. The linker includes an anchoring group, a spacer, and a terminal group. The anchoring group is covalently bound to the nanoparticle and at least one of the terminal groups is covalently bound to at least one stabilizing group. A composition including a crosslinked-coated nanoparticle and an ion, wherein the crosslinked-coated nanoparticle includes a nanoparticle and a coating that includes a linker, a crosslinker, and a stabilizing group; methods of making and using the composition; and systems including the composition.
Type:
Grant
Filed:
February 5, 2019
Date of Patent:
September 22, 2020
Assignee:
Saudi Arabian Oil Company
Inventors:
Jason R. Cox, Dmitry Kosynkin, Hooisweng Ow
Abstract: A viscosity-retaining formulation for use in high-temperature hydrocarbon-bearing reservoir applications. The formulation includes a brine composition and a viscosity enhancing composition, the viscosity enhancing composition operable to enhance viscosity retention of the viscosity-retaining formulation at least, in part, through micellization, the viscosity enhancing composition including a polycation composition and an anionic surfactant composition.
Abstract: A composite temperature resistance gel plugging agent, a preparation method thereof and Fuse thereof in profile control and water plugging of ultra-deep oil reservoirs.
Type:
Grant
Filed:
January 24, 2020
Date of Patent:
September 1, 2020
Assignees:
China University of Petroleum (East China), Northwest Oilfield Branch, China Petroleum & Chemical Co., Ltd, China University of Geosciences (Beijing)
Abstract: A crosslinked polymer comprising reactants of a first repeating unit, a second repeating unit, and a crosslinker that react to form the crosslinked polymer, wherein the first repeating unit is a sulfonic acid-containing monomer present from 1% to 45% by weight of the reactants, wherein the second repeating unit is selected from the group consisting of an N-vinyl amide-containing monomer, a terminal double bond-containing monomer, and any combination thereof, and is present from 55% to 99% by weight of the reactants, and wherein the crosslinker comprises at least two olefinic bonds.