Abstract: A method of servicing a wellbore penetrating a subterranean formation, comprising: placing a wellbore servicing fluid (WSF) into the wellbore, wherein the WSF comprises a first polymer, a second polymer, and water, wherein the first polymer is formed by polymerizing monomers comprising three of 2-Acrylamido-2-methyl propane sulfonic acid (AMPS), N,N-dimethylacrylamide (NNDMA), acrylamide, N-vinylacetamide, allyloxy-2-hydroxy propane sulfonic acid (AHPS), acrylic acid (AA), 2-acrylamido-2-tert.-butyl sulfonic acid (ATBS), or N,N-Dimethylaniline, and the second polymer is formed by polymerizing monomers and/or crosslinkers comprising AMPS, vinylpyrrolidinone, pentaerythritol allyl ether, and methylenebisacrylamide, wherein in the vinylpyrrolidinone, the 2-Pyrrolidone group can be substituted by a heterocyclic group, comprising one or more Z membered rings with Y heteroatoms, wherein Z is equal to or greater than three, and wherein Y is equal to or greater than one.
Type:
Grant
Filed:
November 29, 2019
Date of Patent:
April 27, 2021
Assignee:
Halliburton Energy Services, Inc.
Inventors:
Sandip Prabhakar Patil, Ganesh Shriniwas Pangu, Tamal Kumar Sen, Samuel J. Lewis
Abstract: The fracturing methods can provide an advantage over the current fracturing methods. The fracturing methods can change the fracture gradient of the downhole subterranean formation. For example, one or more of the fracture gradients of the low and high stress zones of the downhole subterranean formation can be changed. Furthermore, the methods, in relation to current practices, can decrease the extent and/or degree of fracturing within low stress downhole formations and increase the degree of fracturing within high stress formations.
Abstract: A method including introducing a well cementing composition into a wellbore, the cementing composition including a pumpable slurry of cement comprising a liquid anti-shrinkage additive including: an aqueous base fluid; a calcined magnesium oxide; and an anti-hydration agent; and allowing at least a portion of the cementing composition to harden. A liquid anti-shrinkage additive for cement including an aqueous base fluid, a calcined magnesium oxide, and an anti-hydration agent.
Type:
Grant
Filed:
September 12, 2016
Date of Patent:
April 20, 2021
Assignee:
Halliburton Energy Services, Inc.
Inventors:
Thomas Singh Sodhi, Kyriacos Agapiou, Aleksey Kolasnikov, Sam J. Lewis
Abstract: A well cementation working solution prepared from red mud, slag and waste drilling fluids. The working solution is prepared from the following components in parts by weight: 100 parts of waste drilling fluids, 50-100 parts of slag, 5-50 parts of red mud, 4-7 parts of a suspension stabilizer, 1-7 parts of an activating aid, 0.5-5 parts of an anti-pollution agent and 0.4-3.5 parts of a diluent. The waste drilling fluids are waste waterborne drilling fluids. The slag is blast furnace slag or vanadium-titanium slag. The suspension stabilizer is sodium bentonite, carboxymethyl cellulose or a mixture of sodium bentonite and carboxymethyl cellulose. The activating aid is sodium metasilicate nonahydrate, sodium carbonate or a mixture of sodium metasilicate nonahydrate and sodium carbonate. The anti-pollution agent is sodium salicylate, potassium citrate or a mixture of sodium salicylate and potassium citrate. The diluent is sodium lignin sulfonate.
Type:
Grant
Filed:
July 13, 2018
Date of Patent:
April 13, 2021
Assignees:
SouthWest Petroleum University, China Academy of Building Research, CNPC Engineering Technology R&D Company Limited
Abstract: A method for recovering hydrocarbons in a carbonate reservoir by introducing a saline solution injection containing a saline soluble surfactant and a saline soluble polymer. The method provides for increased hydrocarbon recovery as compared to conventional waterflooding techniques.
Type:
Grant
Filed:
October 1, 2019
Date of Patent:
April 6, 2021
Inventors:
Ming Han, Ali Abdallah Al-Yousef, Salah Hamad Al-Saleh, Alhasan Fuseni
Abstract: A method to extract methane from a coal bed seam with carbon dioxide produced and recovered from a fuel cell anode exhaust stream while simultaneously sequestering the carbon dioxide on the coal. The process produces methane to supply a fuel cell to generate electricity while reducing or eliminating GHG emissions.
Type:
Grant
Filed:
January 20, 2017
Date of Patent:
April 6, 2021
Assignees:
1304338 Alberta Ltd., 1304342 Alberta Ltd.
Abstract: Oil field chemical delivery fluids containing a mixture of a base fluid and microcapsules having an oil field chemical contained within the microcapsule are described. Chemical groups in the outer surface of the microcapsules interact with the base fluid and promote the dispersibility of the microcapsules in the base fluid. Chemical groups in the outer surface of the microcapsules interact with the targeted areas of a hydrocarbon reservoir and promote the substantivity of the microcapsules to the targeted areas of the reservoir. The oil field chemical delivery fluids provide for the placement of microcapsules in a desired location within the well and/or reservoirs using properties such as the density of the microcapsules. Methods of making oil field chemical delivery fluids, systems containing oil field chemical delivery fluids, methods of fracturing rock in a reservoir and tracing the movement of fluid in a hydrocarbon reservoir using these fluids are described.
Abstract: Methods of enhancing well production, including enhancing fluid flow by conductivity enhancement, diversion, and fluid-loss control, are described. The method of enhancing fluid flow includes introducing a fracturing fluid including resin-coated proppant particles into the formation; introducing (i) a thermosetting composition including one or more di- or tricarboxylic acids and one or more epoxidized fatty acid esters or (ii) thermoset particulates comprising an anhydride network of one or more epoxidized fatty acid esters cross-linked with one or more di- or tricarboxylic acids, into the formation; allowing the resin-coated proppant particles and (i) the thermosetting composition or (ii) the thermoset particulates to form a proppant matrix in a fracture; and allowing voids to form in the proppant matrix.
Type:
Grant
Filed:
December 6, 2016
Date of Patent:
March 30, 2021
Assignee:
HALLIBURTON ENERGY SERVICES, INC.
Inventors:
Ravikant Belakshe, Sumit Ramesh Songire, Lalit P. Salgaonkar
Abstract: The invention provides an acidizing solution for dissolution of a clay mineral and a preparation method thereof. The acidizing solution comprises hydrochloric acid, fluoboric acid, acetic acid, trifluoroacetic acid, hydrogen peroxide, ammonium chloride, dimethylamino-methylbenzotriazole, alkyl ammonium chloride, and polymethylacrylic acid. The acidizing solution provided by the invention can effectively dissolve organic matter, such as clay minerals and cements, in a high-temperature oil-gas reservoir over 160° C., inhibit swelling and migration of clay particles in the presence of water in the acidizing process, avoid secondary deposition of the reservoir, and improve the permeability of the reservoir. The acidizing solution can be prepared and used on the field conveniently and is safe and reliable.
Type:
Grant
Filed:
November 20, 2018
Date of Patent:
March 30, 2021
Assignee:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Abstract: Surfactant compositions for treatment of subterranean formations and produced oil are disclosed. Methods of treating a subterranean formation include placing in the subterranean formation a surfactant composition. The surfactant composition includes an alkanolamide surfactant and an alkoxylated alcohol surfactant.
Type:
Grant
Filed:
April 15, 2016
Date of Patent:
March 30, 2021
Assignee:
Halliburton Energy Services, Inc.
Inventors:
Jeremy A. Holtsclaw, Ali Alwattari, Chandra Sekhar Palla Venkata, Tatyana V. Khamatnurova, Kristina Henkel Holan, Katelyn Lemm Anderson
Abstract: The invention allows for an increase in formation permeability and well flow rate. In a method for exerting a combined effect on the near-wellbore region of a producing formation, the following are fed separately and consecutively into the near-wellbore region: a process fluid No. 1 with a density of 1.3-1.4 g/cm3, followed by a process fluid No. 2 with a density of 1.6-1.8 g/cm3, which combines with the fluid No. 1. As a result, an exothermic reaction of heat and gas release occurs, producing an increase in temperature and pressure in the near-wellbore region. The process fluids contain hydroreactive mixtures, combustible oxidizing mixtures, and combustion initiators. Process fluid No. 1 contains, as combustion initiator, sodium hydride, NaH, and powdered nanoaluminium, Al. In a second step, a process fluid No. 3, an acidic solution containing hydrochloric acid, is fed into the wellbore.
Abstract: A method for protecting a wellbore includes identifying a parent wellbore and a child wellbore and identifying a parent well stage along the parent wellbore that has the potential to interact with a child well stage along the child wellbore while the child well stage undergoes hydraulic fracturing. The method further includes pumping a treatment fluid downhole to the parent well stage for pressurizing the parent well stage to a pressure that is equal to or greater than the pressure in the child well stage while the child well stage undergoes hydraulic fracturing and maintaining the pressure in the parent well stage that is equal to or greater than the pressure in the child well stage while the child well stage undergoes hydraulic fracturing.
Abstract: Alkyl ester spotting fluid compositions and processes for freeing differentially stuck pipe are provided. An alkyl ester spotting fluid composition includes an invert emulsion having an alkyl ester as the external phase and water as the internal phase. In some embodiments, the alkyl ester spotting fluid composition may include the alkyl ester invert emulsion and an emulsifier. The alkyl ester spotting fluid composition may be introduced downhole in the vicinity of a portion of a differentially stuck pipe such that the spotting fluid composition contacts the mudcake and frees the differentially stuck pipe.
Abstract: Provide are methods and systems for inhibiting corrosion of a metal surface. An example method comprises providing a treatment fluid comprising an aqueous carrier fluid and a polyhydroxyetheramine corrosion inhibitor; contacting the metal surface with the treatment fluid; and contacting the metal surface with a mineral acid. Another example method comprises providing a treatment fluid comprising an aqueous carrier fluid, a non-polyhydroxyetheramine corrosion inhibitor, and a polyhydroxyetheramine corrosion inhibitor intensifier; contacting the metal surface with the treatment fluid; and contacting the metal surface with an organic acid. An example system comprises a treatment fluid comprising a polyhydroxyetheramine, an acid, and an aqueous carrier fluid; mixing equipment capable of containing the treatment fluid; pumping equipment capable of pumping the treatment fluid into a wellbore; and the metal surface.
Type:
Grant
Filed:
April 3, 2017
Date of Patent:
February 23, 2021
Assignee:
HALLIBURTON ENERGY SERVICES, INC.
Inventors:
Enrique Antonio Reyes, Antonio Recio, III
Abstract: Alkyl ester spotting fluid compositions and processes for freeing differentially stuck pipe are provided. An alkyl ester spotting fluid composition includes an invert emulsion having an alkyl ester as the external phase and water as the internal phase. In some embodiments, the alkyl ester spotting fluid composition may include the alkyl ester invert emulsion and an emulsifier. The alkyl ester spotting fluid composition may be introduced downhole in the vicinity of a portion of a differentially stuck pipe such that the spotting fluid composition contacts the mudcake and frees the differentially stuck pipe.
Abstract: Various invert emulsion drilling fluid compositions. One such invert emulsion drilling fluid is a water in oil emulsion, which can include an invert emulsifier to stabilize the water in oil emulsion, a C16 to C18 saturated linear alpha carboxylic acid, a fatty dimer diamine, a filtration control agent, a weighting agent including manganese tetroxide, and a bridging agent including calcium chloride. The invert emulsion drilling fluids can be formulated to be substantially free of clay.
Type:
Grant
Filed:
January 15, 2020
Date of Patent:
February 23, 2021
Inventors:
Vikrant Wagle, Abdullah Al-Yami, Khawlah Alanqari, Sara Alkhalaf
Abstract: A hydrocarbon recovery method for recovering a production fluid containing hydrocarbons from a production well provided in the seabed in which microorganisms that produce carbon dioxide or sulfate ions for promoting a deposition of calcium carbonate exist, the method includes: an injecting process of injecting, into the production well, a composition used for producing carbon dioxide or sulfate ions by the microorganisms; a decompressing process of decompressing an inside of the production well after the composition is injected; and a recovering process of recovering the hydrocarbons in a state in which the inside of the production well is decompressed.
Type:
Grant
Filed:
December 20, 2019
Date of Patent:
February 9, 2021
Assignee:
JAPAN OIL, GAS AND METALS NATIONAL CORPORATION
Inventors:
Koji Yamamoto, Toshiro Hata, Yurika Takahashi
Abstract: A process is provided for recovering hydrocarbons, such as heavy oils, from a subterranean reservoir. The process includes providing a supercritical aqueous fluid at a high temperature and high pressure to the underground hydrocarbon reservoir, injecting the aqueous fluid into the reservoir to heat the hydrocarbons in the reservoir, and recovering the heated hydrocarbons from the reservoir. In some cases, the supercritical fluid is also used to upgrade the hydrocarbons and/or facilitate the transportation of the hydrocarbons from the production field to another location, such as a refinery.
Abstract: A method for isolating a first region and a proximate second region of a subterranean formation is disclosed that includes introducing an asphaltene composition into the first region of the subterranean formation, the asphaltene composition including asphaltene dissolved in a solvent, and after introducing the asphaltene composition, introducing an aqueous composition to the first region to precipitate the asphaltene in the first region. The precipitated asphaltene forms a barrier that isolates the second region from at least a portion of the first region.
Type:
Grant
Filed:
February 15, 2018
Date of Patent:
February 2, 2021
Assignee:
Saudi Arabian Oil Company
Inventors:
Ahmad Noor Al-Deen Rizq, Badr H. Zahrani
Abstract: A method includes analyzing a carbonaceous deposit for an asphaltene content from a hydrocarbon-containing fluid located in a well, a wellhead or a production line proximate the wellhead, and applying one or more preventative measures to the hydrocarbon-containing fluid located in the well, the wellhead or the production line proximate the wellhead based on the asphaltene content.
Type:
Grant
Filed:
November 14, 2017
Date of Patent:
February 2, 2021
Assignee:
Chevron U.S.A., Inc.
Inventors:
Estrella Rogel, Cesar Ovalles, Michael Moir