Patents Examined by Aiqun Li
  • Patent number: 11401455
    Abstract: The invention is directed to polymers that self-crosslink at acidic pH or can be crosslinked by phenolic agents in brine. Such polymers have lower viscosity and can be pumped deep into reservoirs, where they will cross link in situ, thus increasing their viscosity and/or form a gel and blocking thief zones. Methods of making and using such polymers are also provided.
    Type: Grant
    Filed: September 12, 2021
    Date of Patent: August 2, 2022
    Assignees: CONOCOPHILLIPS COMPANY, UNIVERSITY OF KANSAS
    Inventors: Huili Guan, Cory Berkland, Ahmad Moradi-Araghi, Jenn-Tai Liang, Terry M. Christian, Riley B. Needham, James H. Hedges, Min Cheng, Faye L. Scully
  • Patent number: 11396632
    Abstract: Disclosed herein are antifouling compositions including a combination of one or more dispersant polymers and one or more inhibitors, the one or more dispersant polymers including the polymerized residues of one or more ?-olefins and maleic anhydride, further wherein the maleic anhydride residues are reacted with a primary amine; and the one or more inhibitors including a functionalized p-phenylene diamine. Concentrates of the antifouling compositions in solvents are stable and pourable at temperatures of 0° C. to ?40° C. The antifouling compositions are added to a petroleum product to form a treated petroleum product, wherein fouling by the treated petroleum product is reduced and a stable dispersion is formed over a wide range of processing conditions.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: July 26, 2022
    Assignee: Ecolab USA Inc.
    Inventors: Abuzar Syed, Kailash Sawhney
  • Patent number: 11390793
    Abstract: A variety of systems, methods and compositions are disclosed, including, in one method, a method for well treatment may comprise providing a treatment fluid comprising an aqueous base fluid; and a nanofribril cellulose additive, wherein the nanofribril cellulose additive comprises nanofribril cellulose and a surfactant adsorbed onto a surface of the nanofribril cellulose; and introducing the treatment fluid into a well bore penetrating a subterranean formation. Additional systems, methods and compositions are also disclosed.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: July 19, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William Cecil Pearl, Jr., Samuel J. Lewis, Thomas Singh Sodhi
  • Patent number: 11384282
    Abstract: The present disclosure discloses a one-component type multi-functional fracturing fluid additive and a process for preparing the same. The process the following steps: mixing ethylene glycol, isopropanol, 1-butanol, 1-hexanol and 1-octanol, and heating to uniformly disperse the mixture to obtain an aqueous dispersant; adding a high molecular polymer thickener and an auxiliary agent to the aqueous dispersant, and stirring the mixture at a high speed to obtain a suspension, wherein the auxiliary agent is one or more selected from clay stabilizers, drainage aids, drag reducers, emulsion inhibitors, filtrate reducers, corrosion inhibitors and fungicides; and slowly stirring the suspension at a low speed, and cooling the suspension to room temperature to collect a sample of suspension. This auxiliary agent has good characteristics such as temperature resistance, shear resistance, salt resistance, and sand suspension.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: July 12, 2022
    Assignee: Shaanxi University Of Science & Technology
    Inventors: Xiaojuan Lai, Meiling Fan, Lei Wang, Xingen Feng, Weibo Liu, Peng Li, Xiaoxin Zhang
  • Patent number: 11377584
    Abstract: A method may include introducing into a wellbore a treatment fluid including a nanoparticle antiscalant; and a base fluid; contacting the nanoparticle antiscalant with an iron sulfide scale present in the wellbore; and dissolving at least a portion of the iron sulfide scale with the nanoparticle antiscalant.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: July 5, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Saleh Haif Almutairi, Yasmeen Hani Najm, Azhar Ahmed Alhasawi
  • Patent number: 11370957
    Abstract: Disclosed herein is a copolymer concentrate in a bio-solvent that can be further diluted into a slurry composition. The bio-solvent facilitates the formation of a viscosified base fluid with the mixing being carried out in a short period of time and at ambient, providing a free flowing, pumpable, and dispersible slurry. The slurry is characterized as having excellent stability, maintaining suspension over a wide range of temperatures. In embodiments, the bio-solvent is selected from terpene and terpene-derivative-containing solvents, fatty acid alkyl esters, and mixtures thereof. The bio-solvent can be first mixed with a styrenic diblock copolymer to form a concentrate prior mixing with a hydrocarbon solvent, forming a viscosified base fluid for subsequent mixing with a water-soluble polymer to form the slurry. The bio-solvent can also be used to dilute the hydrocarbon solvent, prior to mixing with the styrenic diblock copolymer to form the viscosified base fluid.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: June 28, 2022
    Assignee: KRATON POLYMERS LLC
    Inventor: Robert C Bening
  • Patent number: 11365173
    Abstract: The present invention relates to a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees (+/? 0.1°. The present invention also relates to a production method for this form of 2-acrylamido-2-methylpropane sulfonic acid and a preparation method for an aqueous solution A of a salt of this form of 2-acrylamido-2-methylpropane sulfonic acid, and the (co)polymer of this form of -acrylamido-2-methylpropane sulfonic acid.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 21, 2022
    Assignee: SPCM SA
    Inventors: Cédrick Favero, Johann Kieffer
  • Patent number: 11359131
    Abstract: Methods and compositions for treating subterranean formations with fluids containing lost circulation materials are provided. In one embodiment, the methods introducing a treatment fluid that includes a base fluid and a lost circulation material into a wellbore penetrating at least a portion of a subterranean formation, wherein the lost circulation material includes a plurality of particles having a multi-modal particle size distribution comprising a d10 value ranging from about 20 to about 50 microns, a d50 value ranging from about 55 to about 90 microns, and d90 value ranging from about 240 to about 340 microns.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: June 14, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Donald Lee Whitfill, Ifueko Akpata, V. Ramireddy Devarapalli, Mohamed Abdel Salam
  • Patent number: 11319473
    Abstract: The present invention relates to a mixture of esters obtainable by reacting components of an esterifiable composition with each other, wherein the esterifiable composition comprises at least one trimer fatty acid, at least one fatty acid and at least one hydroxy monocarboxylic acid and a production process of the mixture of esters. Furthermore, the present invention relates to environmental friendly, preferably oil based, drilling fluids comprising the above-mentioned mixture of esters, water and an organic phase and the use of said mixture as viscosifier for drilling fluids.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: May 3, 2022
    Assignee: Emery Oleochemicals GmbH
    Inventors: Diana Maeker, Patrick Haehnel
  • Patent number: 11319477
    Abstract: The present disclosure provides methods, compositions, and systems directed to filter cake removal embodying a delayed breaker fluid for oil-based drill-in fluids. A wellbore treatment method comprising: introducing a delayed breaker fluid into a wellbore, wherein the delayed breaker fluid comprises an aqueous base fluid, an acid precursor, and a carbodiimide; and contacting a filter cake in the wellbore with the delayed breaker fluid such that the filter cake is at least partially degraded by acid released from the acid precursor.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: May 3, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Catherine Martin Santos, William Walter Shumway, Jay Paul Deville
  • Patent number: 11299665
    Abstract: Compositions for stimulating hydrocarbon production from a subterranean formation are generally disclosed. In some embodiments, such compositions include olefinic ester compounds, such as alkyl esters of C10-18 unsaturated fatty acids. In some embodiments, the olefinic ester compounds are derived from a natural oil or a natural oil derivative, for example, by catalytic olefin metathesis. Uses of such compounds, such as in oil- and gas-production methods are also generally disclosed.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: April 12, 2022
    Assignee: Wilmar Trading Pte. Ltd.
    Inventors: Frederyk Ngantung, Robin Weitkamp
  • Patent number: 11292951
    Abstract: Methods for the use of treatment fluids that include thermally responsive anti-sag agents in subterranean formations are provided. In one embodiment, the methods include introducing a treatment fluid including a base fluid and an anti-sag agent including a thermally responsive hydrogel that includes at least one thermoresponsive polymer into at least a portion of a subterranean formation.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 5, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Dale E. Jamison, Preston Andrew May, William Walter Shumway
  • Patent number: 11286412
    Abstract: According to one or more embodiments of the present disclosure, water-based drilling fluids may include an aqueous base fluid and one or more additives. In embodiments, water-based drilling fluids may include a lubricant blend including at least oleic acid and palmitoleic acid. The sum of the volume percent of the oleic acid and palmitoleic acid may be from 0.1 vol. % to 10 vol. % of the total volume of the water-based drilling fluid. In embodiments, water-based drilling fluids may include a lesser melting point fraction of jojoba oil in an amount of from 0.1 vol. % to 10 vol. % relative to the total volume of the water-based drilling fluid. At least 90% of the lesser melting point fraction of jojoba oil may have a melting point less than or equal to 15° C. Methods for drilling subterranean wells with the water-based drilling fluids are also disclosed.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: March 29, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Md Amanullah, Raed Alouhali, Sara Alkhalaf, Ali Radhwan, Mohammed Khalid Al-Arfaj, Abdulaziz S. Al-Qasim
  • Patent number: 11286326
    Abstract: The present invention relates to multi-arm star macromolecules which are used as thickening agents or rheology modifiers, including use in hydraulic fracturing fluid compositions. In one aspect of the invention, a star macromolecule is capable of thickening via a dual mechanism comprising (1) self-assembly of the hydrophobic polymerized segments of the star macromolecules via hydrophobic interactions or associations, and (2) association, reaction, or combination of the hydroxyl-containing polymerized segments of one or more of the star macromolecules.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: March 29, 2022
    Assignee: Pilot Polymer Technologies, Inc.
    Inventors: Patrick McCarthy, Yuanxi Liao, Liang Huang
  • Patent number: 11279887
    Abstract: A treatment composition for reducing viscosity, pour point, and precipitate content of a hydrocarbon fluid at temperatures below 90° F., preferably 34° F. to 90° F. The treatment composition includes one or more mixed fatty acid methyl esters, an aromatic mixture consisting essentially of C9 to C15 aromatic compounds, and a main solvent consisting essentially of low odor kerosene, low odor diesel, or a mixture of low odor diesel or low odor kerosene. The treatment composition solubilizes hydrocarbon deposits for removal. The treatment composition also solubilizes paraffins and asphaltenes in a hydrocarbon fluid to prevent or mitigate the formation of hydrocarbon deposits.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: March 22, 2022
    Assignee: WELLRENEW, LLC
    Inventor: Charles Bullick Talley
  • Patent number: 11279801
    Abstract: Various embodiments disclosed relate to a silane-functionalized polyalkyleneimine (PAI) clay stabilizer for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include placing in the subterranean formation a silane-functionalized PAI clay stabilizer.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: March 22, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Tatyana V. Khamatnurova, Gladys Rocio Montenegro-Galindo, Denise Nicole Benoit
  • Patent number: 11248157
    Abstract: Drilling fluid compositions include invert emulsion fluids having an oleaginous phase, an aqueous phase, and an emulsifier composition that includes an ethoxylated alcohol compound and a polyaminated fatty acid compound. The ethoxylated alcohol compound has the formula R1—(OCH2CH2)n—OH, where R1 is a hydrocarbyl group having from 8 to 22 carbon atoms and n is from 1 to 8. The ethoxylated alcohol compound has a Hydrophilic-Lipophilic Balance (HLB) of less than or equal to 6. The polyaminated fatty acid compound has the formula R2—CO—NH—CH2—CH2—N(COR2)—CH2—CH2—NH—CO—R3, where R2 is a hydrocarbyl group having from 1 to 20 carbon atoms and R3 is a hydrocarbyl group having from 1 to 10 carbon atoms or an alkylene carboxylate group having formula —R4—COOH, where R4 is a saturated or unsaturated hydrocarbylene having from 1 to 10 carbon atoms. Methods of drilling wells include operating a drill in a wellbore in the presence of drilling fluid compositions.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: February 15, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Vikrant Wagle, Abdullah Al-Yami
  • Patent number: 11230911
    Abstract: A method of servicing a wellbore penetrating a subterranean formation, comprising placing into the wellbore a wellbore servicing fluid comprising a superabsorbent starch hydrogel (SSH) and an aqueous fluid, wherein the SSH is formed from an SSH reaction mixture comprising a starch, a crosslinker, a base, and water.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: January 25, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hui Zhou, Jay Paul Deville
  • Patent number: 11220623
    Abstract: A flow constraint material consists essentially of degradable particles, where at least 50% by volume of the degradable particles have an average particle size of about 1 millimeters (mm) to about 6 mm.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: January 11, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Geoffrey Wedell Gullickson, William Owen Alexander Ruhle, John Dean Stabenau
  • Patent number: 11208586
    Abstract: A method of using a suppression factor fluid during a well activity is provided. The method comprising the steps of introducing a suppression factor fluid into a wellbore, the suppression factor fluid comprising an untreated monovalent brine; and a suppression sugar alcohol, the suppression sugar alcohol in an amount operable to achieve a suppression factor, wherein a density upper limitation of the suppression factor fluid is greater than the density upper limitation of the monovalent brine; and completing the well activity in the wellbore, such that the suppression sugar alcohol inhibits crystallization during the well activity.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: December 28, 2021
    Assignee: TETRA TECHNOLOGIES, INC.
    Inventor: Arthur G. Mack