Inorganic Component Is Soluble In The Well Treating Medium Patents (Class 507/277)
  • Patent number: 10525415
    Abstract: Systems and methods for processing produced water containing organic compounds include a processing vessel; a filtration layer including a filtration material; and a cleaning system that provides a washing solution to the filtration material during a cleaning cycle. The filtration layer is configured such that at least a portion of produced water that enters the processing vessel during a processing cycle of the processing system passes through the filtration layer before leaving the processing vessel. The filtration material is a metal compound such as a metal hydroxide or a metal oxyhydroxide that is substantially insoluble in aqueous solution. The washing solution includes a reagent capable of reducing the metal compound to a reduced compound soluble in aqueous solution while not decomposing the organic compounds. The organic compounds such as crude oil may be recovered from the filtration layer material after the cleaning cycle, and the filtration layer may be regenerated.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 7, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Regis Didier Alain Vilagines, Guillaume Robert Jean Francois Raynel
  • Patent number: 10422199
    Abstract: A dissolvable frac plug is disclosed. The dissolvable frac plug has an internal chamber surrounded by an external wall with the chamber containing a dry powder component in an amount sufficient to combine with ground water or other wellbore fluids to form a solution or environment that enhances dissolution of the plug. The dry powder is released from the chamber as a portion or portions of the external wall dissolves due to contact with water or other wellbore fluids.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: September 24, 2019
    Assignee: GRYPHON OILFIELD SOLUTIONS, LLC
    Inventors: Ganesh Subbaraman, Tyler Roberts, Ian Beckett
  • Patent number: 8893790
    Abstract: Biomimetic adhesive compositions can be used in various aspects of subterranean treatment operations. Methods for treating a subterranean formation can comprise: providing an adhesive composition that comprises a first polymer comprising a plurality of monomers that comprise a phenolic moiety, a biopolymer that is crosslinkable with the first polymer, a crosslinking agent, and an oxidizing agent; introducing the adhesive composition into a subterranean formation; and forming a coacervate-bound surface in the subterranean formation by crosslinking the first polymer.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Enrique A. Reyes, Pinmanee Boontheung, Narongsak Tonmukayakul
  • Patent number: 8895483
    Abstract: The invention discloses a method of for changing the water permeability of a subterranean formation of a well, the method comprising: providing a fluid comprising a liquid carrier and a viscoelastic surfactant; introducing the fluid into the well; and contacting the fluid and the subterranean formation wherein the action of the liquid carrier and the viscoelastic surfactant is able to change the water permeability of the subterranean formation. The fluid may further comprise methanol, or a salt which can be embodied within the carrier fluid. Advantageously, no further RPM polymer is used. In a first aspect the method is used for reducing the amount of water produced, in as second aspect for improving the oil recovery.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: November 25, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Arthur Milne, Manuel Jose Lastre Buelvas
  • Patent number: 8733441
    Abstract: The present invention provides a method for selectively sealing a thief zone in a hydrocarbon reservoir located in a calcium-rich formation and penetrated by a borehole comprising injecting into the thief zone a sealing fluid comprising a mixture of and hydronium ions (H+) and a source of sulfate ions (SO42?) which mixture can provide precipitation of a designated calcium sulfate compound.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: May 27, 2014
    Assignee: Maersk Olie OG Gas A/S
    Inventor: Michael Jensen
  • Patent number: 8720569
    Abstract: A composition of a treatment fluid and method for treating a zone of well. In an embodiment, the composition includes at least: (i) an aqueous phase; (ii) at least 5 ppm iron ion in the aqueous phase; (iii) a source of at least 5 ppm iodide ion to be dissolved in the aqueous phase; (iv) a water-soluble viscosity-increasing agent dissolved in the aqueous phase; and (v) a source of an oxidative breaker to be dissolved in the aqueous phase. In an embodiment, a method of treating a zone of a subterranean formation of a well includes at least the steps of: (a) forming a treatment fluid according to the composition; and (b) introducing the treatment fluid into the zone.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: May 13, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David Michael Loveless, Lucas Kurtis Fontenelle, Rajesh Kumar Saini
  • Patent number: 8720557
    Abstract: A method of treating a zone of a subterranean carbonate formation penetrated by a wellbore is provided. The method includes the steps of: According to an embodiment, a method of treating a zone of a subterranean carbonate formation penetrated by a wellbore is provided, the method including the steps of: (a) forming a treatment fluid comprising: (i) water; (ii) a water-soluble polymer having at least one functional group that can be crosslinked with aluminum(III); and (iii) a water-soluble aluminum carboxylate; wherein the pH of the treatment fluid is less than 1; (b) introducing the treatment fluid through the wellbore into the zone; and (c) allowing time for the strong acid in the treatment fluid to spend in the formation such that the pH of the fluid increases sufficiently for the aluminum of the aluminum carboxylate to crosslink the polymer.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 13, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Prajakta R. Patil, Anjali R. Sarda, Shoy C. George, Yogesh K Choudhary, Rajendra Kaigankar
  • Patent number: 8703656
    Abstract: According to one aspect of the invention, a method of converting an oxy halide salt into a halide dioxide in a reaction zone under certain conditions is provided. More specifically, the method includes generating chlorine dioxide from a stable composition comprising an oxy halide salt by introducing said composition to a reducing agent and minimum temperature within the reaction zone. According to another aspect of the invention, a composition for a stable chlorine dioxide precursor comprising an oxy halide salt is provided.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 22, 2014
    Assignee: Sabre Intellectual Property Holdings LLC
    Inventor: John Y. Mason
  • Patent number: 8662173
    Abstract: The present invention relates to methods and compositions that can be used to delay crystallization of a treatment solution so that thief zones or fractures are plugged in subterranean formations at a substantial distance from a wellbore. A supersaturated sodium aluminate solution, or other solutions, are introduced into the reservoir. The solution is relatively stable in the supersaturated state. Crystallization, or de-stabilizing the solution, can be controlled, which in turn plugs the thief zone or fracture at a designed point of time. By controlling the time that crystallization starts, i.e., the induction period, thief zones that are located at a substantial distant from the wellbore can be plugged.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: March 4, 2014
    Assignee: Saudi Arabian Oil Company
    Inventors: Xianmin Joe Zhou, Yun Chang
  • Patent number: 8651185
    Abstract: The uncontrolled flow of fluid from an oil or gas well may be reduced or stopped by injecting a composition including 2-cyanoacrylate ester monomer into the fluid stream. Injection of the monomer results in a rapid, perhaps instantaneous, polymerization of the monomer within the flow stream of the fluid. This polymerization results in formation of a solid plug that reduces or stops the flow of additional fluid from the well.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: February 18, 2014
    Assignee: Los Alamos National Security, LLC
    Inventor: Robert E. Hermes
  • Patent number: 8609594
    Abstract: According to one aspect of the invention, a method of converting an oxy halide salt into a halide dioxide in a reaction zone under certain conditions is provided. More specifically, the method includes generating chlorine dioxide from a stable composition comprising an oxy halide salt by introducing said composition to a reducing agent and minimum temperature within the reaction zone. According to another aspect of the invention, a composition for a stable chlorine dioxide precursor comprising an oxy halide salt is provided.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: December 17, 2013
    Assignee: Sabre Intellectual Property Holdings LLC
    Inventor: John Y. Mason
  • Patent number: 8563484
    Abstract: An aqueous hydraulic fluid composition comprising a first lubricant comprising at least one phospholipid and a second lubricant comprising an alkoxylate salt. The aqueous hydraulic fluid composition contains less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof. The use of alkoxylate salts provides increased lubricity and also acts as an emulsion stabilizer for the composition.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: October 22, 2013
    Inventor: Ian D. Smith
  • Publication number: 20130248188
    Abstract: An aqueous viscoelastic solution for use in a modified water alternating gas (WAG) hydrocarbon production method includes a viscoelastic surfactant and a salt in an aqueous base solution. A modified water alternating gas (WAG) method for producing hydrocarbons from a hydrocarbon-bearing formation includes the step of introducing the aqueous viscoelastic solution into the hydrocarbon-bearing formation. The method also includes the step of introducing a service gas into the hydrocarbon-bearing formation. The aqueous viscoelastic solution and the service gas are introduced separately and sequentially into the hydrocarbon-bearing formation. The hydrocarbon-bearing formation produces a production fluid in response to each introduction. The production fluid contains both water and hydrocarbons.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: Saudi Arabian Oil Company
    Inventors: Fawaz M. Al-Otaibi, Sunil Kokal, Mohammed H. Al-Khaldi, Mohammed G. Faifi
  • Patent number: 8522872
    Abstract: Methods and systems relating to in situ decomposition of carbonyls at high temperature for fixing incomplete and failed well seals, are described. According to one embodiment, a method, comprises injecting a sealing agent into a subterranean well having sealing channels or voids in well casings. An alkaline-earth carbonate precipitate is formed from the decomposition of a carbonyl compound. The sealing agent includes the carbonyl compound and an alkaline-earth halide salt.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: September 3, 2013
    Assignee: University of Utah Research Foundation
    Inventors: Daniel L. Bour, Peter E. Rose
  • Patent number: 8513168
    Abstract: A method of treating a hydrocarbon containing formation is described. The method includes (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein (i) when the salinity of the brine is from about 2 wt % to about 4 wt %, the composition comprises a blend of a C20-24 internal olefin sulfonate and a C24-28 internal olefin sulfonate wherein the weight ratio of the C20-24 internal olefin sulfonate to the C24-28 internal olefin sulfonate is from about 90:10 to about 70:30 and (ii) when the salinity of the brine is greater than about 4 wt % up to about 13 wt % the composition comprises a blend of a C20-24 internal olefin sulfonate and a C15-18 internal olefin sulfonate wherein the weight ratio of the C20-24 internal olefin sulfonate to the C15-18 internal olefin sulfonate is from about 90:10 to about 70:30; and (b) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: August 20, 2013
    Assignee: Shell Oil Company
    Inventors: Julian Richard Barnes, Kirk Herbert Raney, Thomas Carl Semple, Paul Gregory Shpakoff, Johan Paul Smit
  • Patent number: 8499833
    Abstract: Disclosed herein are an acid emulsion fluid for use in sealing target portions of a hydrocarbon producing formation penetrated by a wellbore and the method of use thereof for fluid loss control.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: August 6, 2013
    Assignee: Saudi Arabian Oil Company
    Inventors: Saleh Haif Al-Mutairi, Ali Dahmal Al-Aamri, Khalid A. Al-Dossary, Mubarak Auodah Al-Dhufairi
  • Patent number: 8501670
    Abstract: A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: August 6, 2013
    Assignee: Kemira Chemicals Inc.
    Inventors: Carolina Hanna Matilda Andersson, Mona Ezzelarab, Cecilla Eva Maria Johansson, Carl Wilhelm Aften, Walter Philip Watson, Richard Anthony Lalama, Geoffrey Allen Monteith, Frank Schinkel
  • Patent number: 8490698
    Abstract: A composition and method are disclosed. The composition includes a carrier fluid and a solids mixture combined to form a slurry, wherein the solids mixture comprises a plurality of volume-averaged particle size distribution (PSD) modes, wherein a first PSD mode comprises solids having a volume-average median size at least three times larger than the volume-average median size of a second PSD mode such that a packed volume fraction of the solids mixture exceeds 0.75, and wherein the solids mixture comprises a degradable material and includes a reactive solid. The method includes circulating the slurry through a wellbore to form a pack in a fracture and/or a screen-wellbore annulus; degrading the degradable material to increase porosity and permeability of the pack; and producing a reservoir fluid through the permeable pack.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 23, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Mohan K. R. Panga, Peter J. Photos, Bruno Drochon, John W. Still, Balkrishna Gadiyar, Ryan Hartman, Bryan Stamm
  • Publication number: 20130180720
    Abstract: Provided is a method and composition for the in-situ generation of synthetic sweet spots in tight-gas formations. The composition can include nitrogen generating compounds, which upon activation, react to generate heat and nitrogen gas.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 18, 2013
    Applicant: Saudi Arabian Oil Company
    Inventor: Saudi Arabian Oil Company
  • Publication number: 20130098615
    Abstract: Clear, high density brine for use completion operations in a subterranean formation for the recovery of hydrocarbons. The brine comprises an ionic compound selected from the group consisting of zinc iodide, strontium bromide, strontium iodide, cerium bromide, cerium iodide, cerium chloride, lanthanum bromide, lanthanum iodide, lanthanum chloride, and mixtures thereof. The brine may also advantageously be used as the internal phase of invert emulsion drilling fluids.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: GREGORY PAUL PEREZ, JAY PAUL DEVILLE
  • Patent number: 8381811
    Abstract: The instant disclosure is directed to a method of enhancing adsorption of a salt inhibitor onto a wellbore region, wherein the method comprises preconditioning the wellbore region, emplacing the salt inhibitor into the wellbore region, and shutting in the wellbore region for a period of time to at least initiate adsorption of the salt inhibitor onto the wellbore region. The salt inhibitor comprises an at least partially water soluble compound comprising a Group 3 to Group 15 metal and/or an at least partially water soluble compound having any one of the formulae: wherein X is O or S; and R1, R2, R3, R4, and when present, R5 and/or R6 each independently comprise an organic or an inorganic functional group.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: February 26, 2013
    Assignees: M-I SWACO Norge AS, Oilfield Mineral Solutions Limited
    Inventors: Richard Keatch, Hua Guan
  • Publication number: 20130025870
    Abstract: A well servicing fluid is disclosed. The well servicing fluid is formulated by combining ingredients comprising: an aqueous based fluid comprising sulfate ions at a concentration greater than 50 mg/l; a chelating agent; and an acid in an amount sufficient to result in the well servicing fluid having a pH of 4.5 or less. A method of servicing a well is also disclosed.
    Type: Application
    Filed: July 28, 2011
    Publication date: January 31, 2013
    Inventors: Sandra L. Berry, Joel L. Boles, Kay E. Cawiezel, Kern L. Smith
  • Patent number: 8353345
    Abstract: A method of selectively blocking fractures in a subterranean formation by injecting a diversion agent into the well is disclosed. According to one embodiment, the method comprises injecting a diversion agent into a subterranean formation to form an alkaline-earth carbonate precipitate from decomposition of a carbonyl compound, wherein the diversion agent includes the carbonyl compound and an alkaline-earth halide salt.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: January 15, 2013
    Assignee: University of Utah Research Foundation
    Inventors: Peter E. Rose, Daniel L. Bour
  • Patent number: 8338341
    Abstract: The invention provides a process for the production of a granule of a coated oxidizing compound which granule has good delayed release properties, said process comprising a) providing cores of an oxidizing compound produced by fluidized bed spray granulation, b) spraying on the oxidizing compound cores an aqueous solution of metal sili-cate in a fluidized bed, said aqueous solution comprising at least 15% by weight metal silicate, and c) drying to form a metal silicate coating layer on the oxidizing compound core, provided that the amount of metal silicate coating layer is at least 8%, preferably at least 10% by weight based on the total weight of the granule. The invention also provides such granule and well treatment fluids including such granule, and processes for use.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: December 25, 2012
    Assignees: Kemira Kemi AB, Kemira Chemicals, Inc.
    Inventors: Mona Ezzelarab, Carl Aften, Carolina Andersson, Cecilia Johansson, Richard Lalama, Geoffrey Monteith, Lars-Inge Olsson, Ajse Sandqvist, Frank Schinkel, Markus Svensson, Walter Watson, Caroline Wegner
  • Patent number: 8316941
    Abstract: In a method of treating a sandstone-containing formation penetrated by a wellbore, a treatment fluid comprising an aqueous fluid containing a Bronsted acid, a hydrogen fluoride source and an organic acid or salt thereof that is substantially soluble in the aqueous fluid is formed. The treatment fluid contains less than about 2% of fluoride (F?) by weight of the fluid and from 2% or less of sodium (Na+) by weight of the fluid. The treatment fluid is introduced into the formation through the wellbore as a single-stage without introducing an acid-containing fluid preflush into the formation prior to introducing the treatment fluid.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: November 27, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Wayne W. Frenier, Diankui Fu, Stephen Nigel Davies, Murtaza Ziauddin, Zhijun Xiao, Bruno Lecerf, Helene Bulte, Michael J. Fuller
  • Patent number: 8312929
    Abstract: In a method of treating a sandstone-containing formation penetrated by a wellbore, a treatment fluid comprising an aqueous fluid containing a Bronsted acid, a hydrogen fluoride source and an organic acid or salt thereof that is substantially soluble in the aqueous fluid is formed. The treatment fluid contains less than about 2% of fluoride (F?) by weight of the fluid and from 2% or less of sodium (Na+) by weight of the fluid. The treatment fluid is introduced into the formation through the wellbore as a single-stage without introducing an acid-containing fluid preflush into the formation prior to introducing the treatment fluid.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: November 20, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Wayne W. Frenier, Diankui Fu, Stephen Nigel Davies, Murtaza Ziauddin, Zhijun Xiao, Bruno Lecerf, Helene Bulte
  • Patent number: 8267176
    Abstract: Of the methods provided herein, is a method comprising: providing a clean-up fluid comprising a peroxide-generating compound and an aqueous base fluid; placing the clean-up fluid in a subterranean formation; removing contaminants from at least a portion of the subterranean formation to form a cleaned portion of the formation; providing a consolidation agent; placing the consolidation agent on at least a portion of the cleaned portion of the formation; and allowing the consolidation agent to adhere to at least a plurality of unconsolidated particulates in the cleaned portion of the formation.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: September 18, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Ronald G. Dusterhoft, Bhadra Desai
  • Patent number: 8247355
    Abstract: The invention discloses method of treating a subterranean formation of a well bore, the method comprising: providing a treatment fluid comprising: an aqueous base fluid; a viscosity enhancer; and a viscoelastic surfactant, wherein the enhancer is acid in the aqueous base fluid and co-operates with the viscoelastic surfactant to enhance viscosity compared to viscoelastic surfactant alone in the aqueous base fluid; and introducing the treatment fluid into the well bore.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: August 21, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Leiming Li, Lijun Lin, Mathew M. Samuel, Syed Ali, Paul R. Howard
  • Patent number: 8222455
    Abstract: Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In one aspect, the present technology provides polycationic quaternary ammonium compounds that comprise bis-quaternary compound. The bis-quaternary compounds of the present technology can be symmetric or dissymmetric. In another aspect, the present technology provides viscoelastic well bore treatment fluids comprising water, and at least one polycationic quaternary ammonium compound that comprises a bis-quaternary compound. In another aspect, the present technology provides polycationic carboxylates. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or 110° C.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 17, 2012
    Assignee: Stepan Company
    Inventor: Paul Knox
  • Patent number: 8207097
    Abstract: A method of treating a formation that includes emplacing an oxidizing breaker fluid into a region of the formation occupied by a gel; and allowing sufficient time for the oxidizing breaker fluid to degrade the gel is disclosed.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: June 26, 2012
    Assignee: M-I L.L.C.
    Inventors: Mark Sanders, David Antony Ballard
  • Patent number: 8196662
    Abstract: Surfactant based viscoelastic fluids for enhancing the productivity of a hydrocarbon-bearing formations have particular applicability in acid fracturing of subterranean formations surrounding oil and gas wells. The viscoelastic fluid contains an organic acid, an inorganic monovalent salt and a quaternary ammonium aromatic salt and water. The fluid may further be foamed or energized.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: June 12, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Ronald Casey Plasier, Scott Robert Allen
  • Patent number: 8183179
    Abstract: A method for treating a subterranean formation includes forming a treatment fluid including a carrier fluid, a solid acid-precursor, and a solid scale inhibitor. The solid acid-precursor includes a material that forms an acid at downhole conditions in the subterranean formation. The method further includes adding a solid acid-responsive material into the treatment fluid, where the solid acid-responsive material enhances formation of acid from the solid acid-precursor in acidic conditions. The method includes performing an acid fracture treatment and inhibiting scale formation within the subterranean formation. The solid scale inhibitor allows for long-term scale inhibition after the treatment.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: May 22, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Marieliz Garcia-Lopez De Victoria, John W. Still, Toan Bui
  • Patent number: 8183185
    Abstract: A well servicing fluid is disclosed. The well servicing fluid is formulated with components comprising: an organic salt, the organic salt being the product of an organic acid and an organic amine base; and an aqueous based solvent. A method of servicing a well is also disclosed.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: May 22, 2012
    Assignee: Baker Hughes Incoporated
    Inventor: Marek K. Pakulski
  • Publication number: 20120094878
    Abstract: A method and apparatus for a bimodal stimulation composition for removal of thickness of a filter cake while minimizing fluid loss is provided. The bimodal stimulation composition includes water, a salt, an acid, and a viscoelastic surfactant.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 19, 2012
    Applicant: Saudi Arabian Oil Company
    Inventors: Saleh Haif Al-Mutairi, Abdul Hameed Mohsen, Mubarak A. Al-Dhufairi, Ali D. Al-Aamri
  • Patent number: 8091639
    Abstract: A method of selectively blocking fractures in a subterranean formation by injecting a diversion agent into the well is disclosed. According to one embodiment, the method comprises injecting a diversion agent into a subterranean formation to form an alkaline-earth carbonate precipitate from decomposition of a carbonyl compound, wherein the diversion agent includes the carbonyl compound and an alkaline-earth halide salt.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: January 10, 2012
    Assignee: University of Utah Research Foundation
    Inventors: Peter E. Rose, Daniel L. Bour
  • Publication number: 20110312857
    Abstract: Drilling, drill-in and completion fluids containing nanoparticles for use in hydrocarbon drilling and recovery processes and methods related thereto are provided. The fluids also include a dual acting shield agent that shields the nanoparticles and also acts as a viscosifier. The fluids can be used in various types of hydrocarbon drilling and recovery processes, such as drilling, drill in, completion, and the like.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 22, 2011
    Inventors: Md. Amanullah, Ziad Al-Abdullatif
  • Publication number: 20110284228
    Abstract: In hydrocarbon recovery applications, viscoelastic surfactant (VES) gelled fluids may be preheated to a temperature that will increase viscosity of the VES gelled fluid. The preheated VES gelled fluid retains at least a portion of its preheated viscosity when cooled such as by introduction into a low temperature condition. In an embodiment, the VES gelled fluid may be a drilling fluid, completion fluid, or fracturing fluid, and the low temperature condition may be an offshore operation, an operation in a locality having a cold climate, and/or a shallow oil, gas, or both land-based operation where the formation temperature is 120° F. or less. The surfactant in the VES gelled fluid may be one or more of an amine, amine salt, quaternary ammonium salt, betaine, amidoamine oxide, amine oxide, and combinations thereof.
    Type: Application
    Filed: May 19, 2010
    Publication date: November 24, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Tianping Huang, James B. Crews, Guarav Agrawal
  • Publication number: 20110284225
    Abstract: A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The method may be used in subterranean formation having a temperature greater than about 200° F., and the treatment fluid useful with the method may have a high shear recovery greater than 100%.
    Type: Application
    Filed: May 20, 2010
    Publication date: November 24, 2011
    Inventors: Paul D. Lord, Ivan Suleiman, John M. Terracina, Rajendra A. Kalgaonkar
  • Patent number: 8030254
    Abstract: A method includes providing a wellbore treatment fluid having a divalent brine and an amount of polymer and lowering a pH value of the treatment fluid. The method further includes retaining the treatment fluid at the lower pH value until the polymer achieves a primary hydration value. The method further includes adding a cross-linking agent and a cross-linking delay agent to the treatment fluid. The cross-linking agent includes zirconium and/or titanium, and the cross-linking delay agent is a polyol. The method further includes performing a wellbore treatment with the treatment fluid.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: October 4, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Alhad Phatak, Yenny Christanti, Carlos Abad, Balkrishna Gadiyar
  • Publication number: 20110214874
    Abstract: A method of cleaning a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake where the method includes: emplacing a breaker fluid into the wellbore, the breaker fluid comprising: a water-miscible non-aqueous fluid; at least one weighting salt; and at least one breaking agent; and shutting in the well for a period of time sufficient to initiate breaking of the oil-based filter cake is disclosed.
    Type: Application
    Filed: November 3, 2009
    Publication date: September 8, 2011
    Applicant: M-I L.L.C.
    Inventors: Eugene Dakin, Chris Shepherd, Steven Young
  • Patent number: 7994103
    Abstract: Disclosed is a method for introducing additives into formation fluid from an oil and gas well in or moving through equipment and systems located downstream from the oil and gas well. The method is practiced using pellets having a density sufficient to suspend the pellet at an interface of two phases of fluid within the Downstream Equipment. The pellets are prepared from a pellet matrix, such as an ethoxylated wax, and, optionally, a weighting agent as well as an additive. By varying the amount of weighting agent, the density of the pellet can be varied to suspend it at a desired point for a time sufficient to deliver the additive to the desired point within the Downstream Equipment. The method of the invention may also be used with Refinery Equipment such as a fuel distribution system or a waste water treatment system.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: August 9, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Samuel Everett Campbell, Kenneth J. Tacchi
  • Patent number: 7989400
    Abstract: The invention provides a method for treating a subterranean formation penetrated by a wellbore, the method comprising the steps of formulating a treatment fluid and introducing the treatment fluid through the wellbore. The treatment fluid comprises water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4×106, and any combination in any proportion thereof. The invention also provides a treatment fluid for use in a subterranean formation penetrated by a wellbore, the treatment fluid comprising: water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: August 2, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard W. Pauls, Ian D. Robb
  • Patent number: 7987907
    Abstract: Method for increasing the recovery of crude oil from a reservoir containing at least one porous and permeable subterranean formation wherein the formation includes sandstone rock and at least one mineral that has a negative zeta potential under the reservoir conditions and wherein crude oil and connate water are present within the pores of the formation. The method is carried out by (A) injecting into the formation a slug of an aqueous displacement fluid that displaces crude oil from the surface of the pores of the formation wherein the pore volume (PV) of the slug of the aqueous displacement fluid is at least 0.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: August 2, 2011
    Assignees: BP Exploration Operating Company Limited, BP Corporation North America Inc.
    Inventors: Ian Ralph Collins, Gary Russell Jerauld
  • Patent number: 7947633
    Abstract: Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In at least one aspect, the present technology provides polycationic quaternary ammonium compounds comprising dissymmetric bis-quaternary compounds. In another aspect, the present technology provides viscoelastic compositions comprising polycationic quaternary ammonium compounds that comprise dissymmetric bis-quaternary compounds. In yet another aspect, the present technology provides polycationic quaternary ammonium compounds comprising a carboxylate functional polycationic quaternary ammonium compound. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or about 110° C.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: May 24, 2011
    Assignee: Stepan Company
    Inventor: Paul Knox
  • Patent number: 7939471
    Abstract: Among many things, in some embodiments, improved viscoelastic surfactant gels that comprise non-aqueous tackifying agents, and their associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises an aqueous base fluid, a non-aqueous tackifying agent, and a viscoelastic surfactant; and introducing the treatment fluid into a subterranean formation.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: May 10, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Thomas D. Welton, Jason E. Bryant
  • Patent number: 7915205
    Abstract: An acidizing formulation for use in the stimulation of hydrocarbon production is stable when packaged and stored as a single fluid for periods exceeding one year. The formulation contains a miscibility solvent which substantially prevents any phase separation between the constituents and lack of dispersion of the additives in the fluid.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: March 29, 2011
    Assignee: Weatherford Engineered Chemistry Canada Ltd.
    Inventors: Clayton Smith, Darin Oswald, Dan Skibinski, Nicole Sylvestre
  • Patent number: 7906462
    Abstract: A method of acidizing and cleaning up a formation is disclosed, the formation being above 150 degrees C. The formation is treated with a mutual solvent system comprising a mutual solvent of oil and water, an aqueous acid, a corrosion inhibitor, and an iron control agent. In some embodiments, the iron control agent is present in an amount of less than 1% by weight of the mutual solvent system. In some embodiments, the corrosion inhibitor may be present in an amount of less than 10% by weight of the mutual solvent system. In some embodiments, the mutual solvent system further comprises an intensifier.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: March 15, 2011
    Assignee: SynOil Fluids Holdings Inc.
    Inventors: Shaun T. Mesher, David L. Edwards
  • Publication number: 20110056683
    Abstract: A wellbore fluid comprising a base fluid and a particulate bridging agent comprised of a sparingly water-soluble material selected from the group consisting of melamine (2,4,5-triamino-1,3,5-triazine), lithium carbonate, lithium phosphate (Li3PO4), and magnesium sulfite.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 10, 2011
    Inventors: Simon Neil Duncum, Christopher Alan Sawdon
  • Patent number: 7902124
    Abstract: A method of treating a subterranean formation penetrated by a wellbore of a well having iron-containing components is carried out by introducing a treatment fluid into the wellbore of the well. The treatment fluid is formed from an aqueous solution, a mineral acid, a viscoelastic surfactant gelling agent and corrosion inhibitor system containing at least one of an alkyl, alkenyl, alicyclic or aromatic substituted aliphatic ketone and aliphatic or aromatic aldehyde. The treatment fluid is substantially free of any formic acid or precursor formic acid. In certain embodiments, the corrosion inhibitor system comprises a mixture of at least one of an alkenyl phenone or ?,?-unsaturated aldehyde, an unsaturated ketone or unsaturated aldehyde other than the alkenyl phenone and ?,?-unsaturated aldehyde, a dispersing agent, an extender and an alcohol solvent. A corrosion inhibitor intensifier may also be used in certain embodiments, which may include a mixture of cuprous iodide and cuprous chloride.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: March 8, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Syed Ali, Javier Sanchez Reyes, Mathew M. Samuel, Francois M. Auzerais
  • Patent number: 7884057
    Abstract: Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In at least one aspect, the present technology provides polycationic quaternary ammonium compounds comprising bis-quaternary compounds. In another aspect, the present technology provides viscoelastic compositions that comprise polycationic quaternary ammonium compounds comprising bis-quaternary compounds. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or about 110° C. when the amount of the one or polycationic quaternary compounds is less than about 10% by weight based on the total weight of the composition.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: February 8, 2011
    Assignee: Stepan Company
    Inventor: Paul Knox