Patents Assigned to Statoil Gulf Services LLC
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Patent number: 11098568Abstract: A method of stimulating a formation containing two or more wellbores includes simultaneously stimulating a first region of each wellbore using a stimulation fluid so as to create a primary fracture in the first region of each wellbore, wherein the first region comprises a first opening or openings allowing fluid communication between each wellbore and the formation, wherein the first region has a first stimulated lateral length and wherein the flow rate of the stimulation fluid through the first opening or openings is greater than 1 barrel per minute per foot of the first stimulated lateral length.Type: GrantFiled: September 22, 2017Date of Patent: August 24, 2021Assignee: STATOIL GULF SERVICES LLCInventors: Jason Bryant, Auristela Carolina Vasquez Quintero
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Patent number: 10690791Abstract: A method, system and non-transitory computer-readable medium for forming a seismic image of a geological structure are provided. After obtaining seismic wave data including a plurality of seismic wave traces at a first region of the geological structure, a predicted time dispersion error of an actual time dispersion error that results from a use of a finite difference approximation in calculating predicted seismic wave data at a second region of the geological structure as if a seismic wave propagates from the first region to the second region of the geological structure, is calculated. A corrected predicted seismic wave data at the second region of the geological structure is calculated by applying the finite difference approximation to the seismic wave data at the first region of the geological structure compensated with the predicted time dispersion error.Type: GrantFiled: April 28, 2015Date of Patent: June 23, 2020Assignees: STATOIL GULF SERVICES LLC, STATOIL (BEIJING) BUSINESS CONSULTING SERVICE CO., LTD.Inventors: Meixia Wang, Sheng Xu
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Patent number: 10669832Abstract: A method for optimizing well spacing for a multi-well pad which includes a first group of wells and a second group of wells is provided. The method includes the steps of: creating a fracture in a stage in a first well in the first group of wells; isolating a next stage in said first well in the first group of wells from said stage; creating a fracture in said next stage in the first well in the first group after the step of isolating; measuring a pressure by using a pressure gauge in direct fluid communication with said next stage in the first well in the first group of wells; creating a fracture in one or more stages in a well in the second group of wells in a manner such that the fracture in the well in the second group of wells induces the pressure measured in the first well to change; and recording the pressure change in the next stage of the first well.Type: GrantFiled: July 3, 2018Date of Patent: June 2, 2020Assignee: STATOIL GULF SERVICES LLCInventors: Matthew A. Dawson, Günther Kampfer
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Patent number: 10590763Abstract: Hydraulic fracturing of a geological formation is performed by injection of a proppant mixture into the geological formation to form fractures in the geological formation. The proppant mixture includes at least a liquid, proppant, and proppant additive particles. The hydraulic fracturing results in a presence of the proppant additive particles within the formed fractures, wherein the proppant additive particles are configured with a first complex conductivity that is measurably different than a second complex conductivity exhibited by materials comprising the geological formation. The formed fractures can then be imaged and mapped in the geological formation with electromagnetic energy at one or more frequencies in a manner so that the proppant additive particles function as a contrast agent due to the first complex conductivity of the proppant additive particles being measurably different from the second complex conductivity.Type: GrantFiled: December 11, 2017Date of Patent: March 17, 2020Assignees: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL, BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, STATOIL GULF SERVICES LLCInventors: Pabitra N. Sen, Alfred Kleinhammes, Yue Wu, Michele O'Callaghan, Mohsen Ahmadian-Tehrani
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Patent number: 10590748Abstract: A reservoir stimulation tool for stimulating a formation surrounding a wellbore having an inner wall includes: a tubular string including an outer wall defining therein an inner bore, the tubular string being configured to be inserted into the wellbore so as to form an annular space between the tubular string and the inner wall of the wellbore, a plurality of ports formed in the outer wall of the tubular string; a plurality of port valves for opening or closing the ports; and a plurality of packers coupled to the tubular string, wherein each packer is configured to be expanded in order to engage the inner wall of the wellbore, thereby isolating two or more longitudinal segments of the annular space from each other.Type: GrantFiled: September 22, 2017Date of Patent: March 17, 2020Assignee: STATOIL GULF SERVICES LLCInventors: Auristela Carolina Vasquez Quintero, Jason Bryant
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Patent number: 10436027Abstract: A method of evaluating a geometric parameter of a first fracture emanating from a first wellbore penetrating a subterranean formation is provided. The method includes the steps of forming the first fracture in fluid communication with the first wellbore; forming a second fracture in fluid communication with a second wellbore; measuring a first pressure change in the second wellbore in proximity to the first wellbore; and determining the geometric parameter of the first fracture using at least the measured first pressure change in an analysis which couples a solid mechanics equation and a pressure diffusion equation.Type: GrantFiled: May 9, 2018Date of Patent: October 8, 2019Assignee: STATOIL GULF SERVICES LLCInventors: Günther Kampfer, Matthew A. Dawson
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Patent number: 10370955Abstract: A method for calculating pore pressure of a subsurface includes the steps of obtaining a resistivity value while drilling in a region wherein there is a shallow depth (reference depth) where shale is in a hydrostatic condition, or where shale is not in hydrostatic condition but where the pore pressure at such depth can be estimated and calculating, using a processor, a pore pressure at a drilling location based on the following Formula (I): PP=OvB?(OvB?Hyd)(R/R0)øn wherein PP is pore pressure, OvB is the overburden value associated with the drilling location, Hyd is hydrostatic pore pressure, R is a measured value of resistivity, R0 is the resistivity at a reference depth or is an imposed value of resistivity, and øn is a normalized value of porosity.Type: GrantFiled: March 12, 2015Date of Patent: August 6, 2019Assignee: STATOIL GULF SERVICES LLCInventor: Giuseppe De Prisco
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Patent number: 10246981Abstract: A method of treating a subsurface formation with low permeability to increase total oil production from the formation is disclosed. The method may include providing a first fluid into two or more fractures emanating from a first wellbore. The first fluid may form additional fractures in the formation. The first fluid may also increase a minimum horizontal stress in zones substantially surrounding the fractures emanating from the first wellbore and the additional fractures formed. A zone having a lower minimum horizontal stress may be located between these zones. Additional fractures may be formed from a second wellbore in the formation with at least one of the additional fractures emanating from the second wellbore and propagating into the lower minimum horizontal stress zone. Hydrocarbons may be produced from the first wellbore and/or the second wellbore. A second fluid may be provided into the first wellbore after producing the hydrocarbons from the first wellbore.Type: GrantFiled: September 23, 2016Date of Patent: April 2, 2019Assignee: Statoil Gulf Services LLCInventor: Huina Li
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Patent number: 10246980Abstract: A method of treating a subsurface formation with low permeability to increase total oil production from the formation is disclosed. The method may include providing a first fluid into two or more fractures emanating from a first wellbore. The first fluid may be provided at a pressure below a fracture pressure of the formation. The first fluid may increase a pressure in zones substantially surrounding a first fracture and a second fracture emanating from the first wellbore. A zone having a lower pressure may be located between these zones. Additional fractures may be formed from a second wellbore in the formation with at least one of the additional fractures emanating from the second wellbore and propagating into the lower pressure zone. Hydrocarbons may be produced from the second wellbore. A second fluid may be provided into the first wellbore before and/or after producing the hydrocarbons from the second wellbore.Type: GrantFiled: September 23, 2016Date of Patent: April 2, 2019Assignee: Statoil Gulf Services LLCInventor: Huina Li
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Publication number: 20190093460Abstract: A reservoir stimulation tool for stimulating a formation surrounding a wellbore having an inner wall includes: a tubular string including an outer wall defining therein an inner bore, the tubular string being configured to be inserted into the wellbore so as to form an annular space between the tubular string and the inner wall of the wellbore, a plurality of ports formed in the outer wall of the tubular string; a plurality of port valves for opening or closing the ports; and a plurality of packers coupled to the tubular string, wherein each packer is configured to be expanded in order to engage the inner wall of the wellbore, thereby isolating two or more longitudinal segments of the annular space from each other.Type: ApplicationFiled: September 22, 2017Publication date: March 28, 2019Applicant: Statoil Gulf Services LLCInventors: Auristela Carolina Vasquez QUINTERO, Jason BRYANT
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Publication number: 20190093465Abstract: A method of stimulating a formation containing two or more wellbores includes simultaneously stimulating a first region of each wellbore using a stimulation fluid so as to create a primary fracture in the first region of each wellbore, wherein the first region comprises a first opening or openings allowing fluid communication between each wellbore and the formation, wherein the first region has a first stimulated lateral length and wherein the flow rate of the stimulation fluid through the first opening or openings is greater than 1 barrel per minute per foot of the first stimulated lateral length.Type: ApplicationFiled: September 22, 2017Publication date: March 28, 2019Applicant: STATOIL GULF SERVICES LLCInventors: Jason BRYANT, Auristela Carolina Vasquez QUINTERO
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Publication number: 20180320499Abstract: A method for optimizing well spacing for a multi-well pad which includes a first group of wells and a second group of wells is provided. The method includes the steps of: creating a fracture in a stage in a first well in the first group of wells; isolating a next stage in said first well in the first group of wells from said stage; creating a fracture in said next stage in the first well in the first group after the step of isolating; measuring a pressure by using a pressure gauge in direct fluid communication with said next stage in the first well in the first group of wells; creating a fracture in one or more stages in a well in the second group of wells in a manner such that the fracture in the well in the second group of wells induces the pressure measured in the first well to change; and recording the pressure change in the next stage of the first well.Type: ApplicationFiled: July 3, 2018Publication date: November 8, 2018Applicant: STATOIL GULF SERVICES LLCInventors: Matthew A. DAWSON, Günther KAMPFER
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Publication number: 20180258762Abstract: A method of evaluating a geometric parameter of a first fracture emanating from a first wellbore penetrating a subterranean formation is provided. The method includes the steps of forming the first fracture in fluid communication with the first wellbore; forming a second fracture in fluid communication with a second wellbore; measuring a first pressure change in the second wellbore in proximity to the first wellbore; and determining the geometric parameter of the first fracture using at least the measured first pressure change in an analysis which couples a solid mechanics equation and a pressure diffusion equation.Type: ApplicationFiled: May 9, 2018Publication date: September 13, 2018Applicant: STATOIL GULF SERVICES LLCInventors: Günther KAMPFER, Matthew A. DAWSON
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Patent number: 10030497Abstract: A method for optimizing well spacing for a multi-well pad which includes a first group of wells and a second group of wells is provided. The method includes the steps of: creating a fracture in a stage in a first well in the first group of wells; isolating a next stage in said first well in the first group of wells from said stage; creating a fracture in said next stage in the first well in the first group after the step of isolating; measuring a pressure by using a pressure gauge in direct fluid communication with said next stage in the first well in the first group of wells; creating a fracture in one or more stages in a well in the second group of wells in a manner such that the fracture in the well in the second group of wells induces the pressure measured in the first well to change; and recording the pressure change in the next stage of the first well.Type: GrantFiled: February 10, 2015Date of Patent: July 24, 2018Assignee: STATOIL GULF SERVICES LLCInventors: Matthew A. Dawson, Günther Kampfer
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Patent number: 9988900Abstract: A method of evaluating a geometric parameter of a first fracture emanating from a first wellbore penetrating a subterranean formation is provided. The method includes the steps of forming the first fracture in fluid communication with the first wellbore; forming a second fracture in fluid communication with a second wellbore; measuring a first pressure change in the second wellbore in proximity to the first wellbore; and determining the geometric parameter of the first fracture using at least the measured first pressure change in an analysis which couples a solid mechanics equation and a pressure diffusion equation.Type: GrantFiled: June 30, 2015Date of Patent: June 5, 2018Assignee: STATOIL GULF SERVICES LLCInventors: Günther Kampfer, Matthew A. Dawson
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Publication number: 20180100389Abstract: Hydraulic fracturing of a geological formation is performed by injection of a proppant mixture into the geological formation to form fractures in the geological formation. The proppant mixture includes at least a liquid, proppant, and proppant additive particles. The hydraulic fracturing results in a presence of the proppant additive particles within the formed fractures, wherein the proppant additive particles are configured with a first complex conductivity that is measurably different than a second complex conductivity exhibited by materials comprising the geological formation. The formed fractures can then be imaged and mapped in the geological formation with electromagnetic energy at one or more frequencies in a manner so that the proppant additive particles function as a contrast agent due to the first complex conductivity of the proppant additive particles being measurably different from the second complex conductivity.Type: ApplicationFiled: December 11, 2017Publication date: April 12, 2018Applicants: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL, BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, STATOIL GULF SERVICES LLCInventors: Pabitra N. Sen, Alfred Kleinhammes, Yue Wu, Michele O'Callaghan, Mohsen Ahmadian-Tehrani
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Publication number: 20180011210Abstract: A method, system and non-transitory computer-readable medium for forming a seismic image of a geological structure are provided. After obtaining seismic wave data including a plurality of seismic wave traces at a first region of the geological structure, a predicted time dispersion error of an actual time dispersion error that results from a use of a finite difference approximation in calculating predicted seismic wave data at a second region of the geological structure as if a seismic wave propagates from the first region to the second region of the geological structure, is calculated. A corrected predicted seismic wave data at the second region of the geological structure is calculated by applying the finite difference approximation to the seismic wave data at the first region of the geological structure compensated with the predicted time dispersion error.Type: ApplicationFiled: April 28, 2015Publication date: January 11, 2018Applicants: Statoil Gulf Services LLC, Statoil (Beijing) Business Consulting Service Co., Ltd.Inventors: Meixia WANG, Sheng XU
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Patent number: 9828840Abstract: A method and apparatus for producing hydrocarbons from a subterranean formation. A first well is provided in the formation, the first well being separated by an isolating material into at least a first and second zone, the first zone being substantially isolated from the second zone. A second well is provided in the formation. The second well is separated by an isolating material into at least a first and second zone, the first zone being substantially isolated from the second zone. A first fracture is provided in the formation, the first fracture extending substantially between the first zones. A second fracture is provided in the formation, the second fracture extending substantially between the second zones of the first and second wells. A fluid is injected into the formation from the first zone in the first well. Hydrocarbons are produced at the second zone of the second well.Type: GrantFiled: September 20, 2013Date of Patent: November 28, 2017Assignee: STATOIL GULF SERVICES LLCInventor: Matthew Dawson
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Publication number: 20170030179Abstract: A method of fracturing or frac-packing a subterranean zone surrounding a well bore includes fracturing the subterranean zone with a fracturing fluid to form fractures; pumping proppant slurry comprising ultra-light, ultra-strong proppant into the fractures of the subterranean zone; and releasing pressure after pumping to form propped fractures.Type: ApplicationFiled: July 31, 2015Publication date: February 2, 2017Applicant: STATOIL GULF SERVICES LLCInventors: Pandurang M. KULKARNI, Desikan SUNDARARAJAN, Virgil Ray ELLIS, Endre IVARRUD
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Publication number: 20170002652Abstract: A method of evaluating a geometric parameter of a first fracture emanating from a first wellbore penetrating a subterranean formation is provided. The method includes the steps of forming the first fracture in fluid communication with the first wellbore; forming a second fracture in fluid communication with a second wellbore; measuring a first pressure change in the second wellbore in proximity to the first wellbore; and determining the geometric parameter of the first fracture using at least the measured first pressure change in an analysis which couples a solid mechanics equation and a pressure diffusion equation.Type: ApplicationFiled: June 30, 2015Publication date: January 5, 2017Applicant: STATOIL GULF SERVICES LLCInventors: Günther KAMPFER, Matthew A. DAWSON