Patents by Inventor Sharath Savari

Sharath Savari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200010751
    Abstract: Methods for using cement compositions in subterranean formations are provided. In some embodiments, the methods comprise introducing a first treatment fluid comprising a first base fluid and a metal oxide into a wellbore penetrating at least a portion of a subterranean formation; introducing a spacer fluid into the wellbore that separates the first treatment fluid from at least a second treatment fluid; introducing the second treatment fluid into the wellbore, wherein the second treatment fluid comprises a second base fluid and a soluble salt; allowing the first treatment fluid to contact the second treatment fluid to form a cement mixture; and allowing the cement mixture to at least partially set.
    Type: Application
    Filed: December 13, 2017
    Publication date: January 9, 2020
    Inventors: Donald L. Whitfill, Sharath Savari, Reem Alburaikan, Waseem Abdulrazzaq, Dale E. Jamison
  • Patent number: 10514324
    Abstract: Generally, assessing the properties of a plug comprising wellbore strengthening materials may enable the design of more efficient wellbore strengthening additives and fluids because the properties of the plug may translate to the near wellbore strengthening effect of the wellbore strengthening materials of the plug. Assessing such properties may involve applying a differential pressure to a plug formed in a passageway of a tool comprising at least one sensor proximal to the passageway plug, and then measuring at least one attribute selected from the group consisting of a normal plug pressure, a normal plug displacement, and any combination thereof with the at least one sensor.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: December 24, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Arunesh Kumar, Jason T. Scorsone
  • Patent number: 10442974
    Abstract: In some instances, a fluid loss control enhancement additive may synergistically work with lost circulation materials (“LCM”) to arrest lost circulation in wellbores where LCMs alone have been ineffective. For example, a method may involve treating a wellbore penetrating a subterranean formation with a pill comprising an aqueous base fluid and a lost circulation material; observing fluid loss from the wellbore to the subterranean formation while treating the wellbore with the pill; and adding salt, a swellable polymer, and fibers to the pill.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 15, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Donald Lee Whitfill, Sharath Savari, Matthew L. Miller, Dale E. Jamison, Robert J. Murphy
  • Patent number: 10316633
    Abstract: The present invention relates to methods of treating subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing a first aqueous composition and a second aqueous composition in a subterranean formation. The placing includes injecting the first aqueous composition through a tubular passage in a wellbore. The placing also includes injecting the second aqueous composition through an annular passage in the wellbore.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: June 11, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Yogesh Kumar Choudhary
  • Patent number: 10301523
    Abstract: A granular lost circulation material for use in a wellbore during drilling operations to minimize loss of drilling fluid at a lost circulation area is disclosed. The granular lost circulation material comprises a granular material and a non-hardening tackifying agent. The granular material is coated with the non-hardening tackifying agent. The granular lost circulation material forms agglomerated particles, which form a filter cake at the lost circulation area.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: May 28, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, B. Raghava Reddy
  • Patent number: 10145775
    Abstract: Methods and apparatuses for determining the swell of a subterranean formation sample when contacted with a fluid at subterranean conditions.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 4, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Bhargav Gajji, Somesh Kurella
  • Publication number: 20180298269
    Abstract: Methods including precipitated and mined calcium carbonate lost circulation materials for use in subterranean formation operations. The precipitated calcium carbonate lost circulation materials are formed under a chosen set of precipitation conditions, including in situ in a subterranean formation. The mined calcium carbonate lost circulation materials are obtained in a desired morphological form under naturally occurring mined conditions. The precipitated and mined calcium carbonate lost circulation materials may be needle-shaped aragonite having an aspect ratio of about 1.4 to about 15.
    Type: Application
    Filed: November 5, 2015
    Publication date: October 18, 2018
    Inventors: Dale E. JAMISON, Cato Russell MCDANIEL, Xiangnan YE, Sharath SAVARI, Chesnee Lae DAVIS, Jonathan Paul WALKER
  • Patent number: 10066143
    Abstract: Highly resilient carbon-based materials having a resiliency greater than about 120% at 10,000 psi may be useful as lost circulation materials (LCMs) for wellbore strengthening and lost circulation mitigation in downhole operations in subterranean formations with depleted zones. For example, a downhole method may include drilling at least a portion of a wellbore penetrating a subterranean formation with at least one depleted zone having a plurality of fractures extending from the wellbore into the at least one depleted zone; circulating a treatment fluid through the wellbore, the treatment fluid comprising a base fluid and a resilient carbon-based material having a resiliency greater than about 120% at 10,000 psi; contacting the at least one depleted zone with the resilient carbon-based material; and plugging at least some of the plurality of fractures in the at least one depleted zone with the resilient carbon-based material.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 4, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Donald L. Whitfill, Jonathan Paul Walker, Sharath Savari
  • Patent number: 10047268
    Abstract: A self-triggering, in-situ crosslinking fluid system is provided for controlling lost circulation for drilling in a carbonate formation. Methods of drilling a well include the steps of: (A) forming a drilling fluid comprising an aqueous phase, wherein the aqueous phase comprises: (i) water; (ii) acid, wherein the acid is at least sufficiently strong and in at least a sufficient concentration such that the aqueous phase has an initial pH of less than about 2; (iii) a viscosity-increasing agent; and (iv) a crosslinker, wherein the crosslinker is selected or controlled to crosslink the viscosity-increasing agent at a pH range anywhere in a range of about 1.5 to about 6.5 and that is at least higher than the initial pH of the aqueous phase; and (B) drilling with the drilling fluid to form a wellbore penetrating a subterranean formation.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 14, 2018
    Inventors: Chaitanya Mallikarjun Karale, Sharath Savari, Vijaya Kumar Patnana, Prajakta R Patil
  • Patent number: 10041871
    Abstract: Apparatus and methods for simulation of bore hole fractures are disclosed. A device for simulating a fracture in a subterranean formation comprises a housing, a gap in the housing, and one or more shims positioned inside the gap. The shims cover at least a portion of a surface of a wall forming the gap. The device further comprises an inlet for directing a sample fluid into the gap. The sample fluid flows through the gap and flows out of the gap through an outlet.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 7, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Dale E. Jamison, Robert J. Murphy, Matthew L. Miller, Sharath Savari
  • Patent number: 10011755
    Abstract: A method of treating a well the method including the steps of: (A) forming a fluid including: (i) a shear-thinning aqueous liquid phase; and (ii) an inorganic setting material; wherein the fluid is shear-thinning, pumpable, and settable; and (B) introducing the fluid into the well.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 3, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Arunesh Kumar, Sharath Savari, Jason T. Scorsone, Rajendra A. Kalgaonkar
  • Patent number: 9988569
    Abstract: An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of a rheology additive of the invention comprising fatty dimer diamines or dimer diamines and an organic acid or ester of the acid. A nonlimiting example of such a rheology additive comprises a C36 fatty dimer diamine and adipic acid or dimethyl adipate.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: June 5, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vikrant Bhavanishankar Wagle, Shadaab Syed Maghrabi, Sharath Savari, Sandeep D. Kulkarni
  • Patent number: 9932510
    Abstract: A treatment fluid comprising: a base fluid; a plurality of a first type of fiber, wherein the first type of fiber is degradable; a plurality of a second type of fiber; and a third lost-circulation material, wherein the first type of fibers, the second type of fibers, and the third lost-circulation material inhibit or prevent some or all of the treatment fluid from penetrating into a subterranean formation from a wellbore, wherein the wellbore penetrates the subterranean formation.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 3, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jonathan P. Walker, Donald L. Whitfill, Sharath Savari
  • Publication number: 20180038212
    Abstract: The present invention relates to methods of treating subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing a first aqueous composition and a second aqueous composition in a subterranean formation. The placing includes injecting the first aqueous composition through a tubular passage in a wellbore. The placing also includes injecting the second aqueous composition through an annular passage in the wellbore.
    Type: Application
    Filed: October 19, 2017
    Publication date: February 8, 2018
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Yogesh Kumar Choudhary
  • Patent number: 9822625
    Abstract: The present invention relates to methods of treating subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing a first aqueous composition and a second aqueous composition in a subterranean formation. The placing includes injecting the first aqueous composition through a tubular passage in a wellbore. The placing also includes injecting the second aqueous composition through an annular passage in the wellbore.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 21, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Yogesh Kumar Choudhary
  • Publication number: 20170321102
    Abstract: Highly resilient carbon-based materials having a resiliency greater than about 120% at 10,000 psi may be useful as lost circulation materials (LCMs) for wellbore strengthening and lost circulation mitigation in downhole operations in subterranean formations with depleted zones. For example, a downhole method may include drilling at least a portion of a wellbore penetrating a subterranean formation with at least one depleted zone having a plurality of fractures extending from the wellbore into the at least one depleted zone; circulating a treatment fluid through the wellbore, the treatment fluid comprising a base fluid and a resilient carbon-based material having a resiliency greater than about 120% at 10,000 psi; contacting the at least one depleted zone with the resilient carbon-based material; and plugging at least some of the plurality of fractures in the at least one depleted zone with the resilient carbon-based material.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 9, 2017
    Inventors: Donald L. WHITFILL, Jonathan Paul WALKER, Sharath SAVARI
  • Patent number: 9765596
    Abstract: Methods for designing lost circulation materials for use in drilling wellbores penetrating subterranean formations may involve inputting a plurality of first inputs into a numerical method, the plurality of first inputs comprising a lost circulation material property input of a first LCM; calculating a plurality of first outputs from the numerical method; inputting a plurality of second inputs into the numerical method, the plurality of second inputs comprising the lost circulation material property input of a second lost circulation material; calculating a plurality of second outputs from the numerical method; comparing the first outputs to the second outputs; and developing a drilling fluid comprising a third lost circulation material based on the comparison of outputs.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 19, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Sharath Savari, Dale E. Jamison, Robert J. Murphy, Siva Rama Krishna Jandhyala
  • Patent number: 9725975
    Abstract: A method of wellbore strengthening may include providing a wellbore strengthening fluid comprising a drilling fluid, a particulate, and a fiber; introducing the wellbore strengthening fluid into a wellbore penetrating a subterranean formation; and forming a plug comprising the particulate and the fiber in a void near the wellbore, the plug being capable of maintaining integrity at about 1000 psi or greater overbalance pressure.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 8, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Arunesh Kumar, Sharath Savari, Donald L. Whitfill, Dale E. Jamison
  • Patent number: 9725635
    Abstract: A wellbore treatment fluid containing lost circulation materials and methods for using the treatment fluid, the fluid including a carrier fluid and shape changing polymer structures. The shape changing polymer structures may be folded or rolled into various cross-sectional surface area reducing configurations and are capable of reversibly extending and reversibly contracting with changes in temperature. The materials forming the shape changing polymer structures may include at least one selected from poly[ethylene-co-(vinyl acetate)], poly(?-pentadecalactone), poly(?-caprolactone), and copolymers thereof. A method for utilizing the treatment fluid for creation or maintenance of a well includes forming or providing the treatment fluid and introducing the treatment fluid into a borehole.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 8, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Sharath Savari, Matthew L. Miller
  • Publication number: 20170166795
    Abstract: A treatment fluid comprising: a base fluid; a plurality of a first type of fiber, wherein the first type of fiber is degradable; a plurality of a second type of fiber; and a third lost-circulation material, wherein the first type of fibers, the second type of fibers, and the third lost-circulation material inhibit or prevent some or all of the treatment fluid from penetrating into a subterranean formation from a wellbore, wherein the wellbore penetrates the subterranean formation.
    Type: Application
    Filed: June 10, 2014
    Publication date: June 15, 2017
    Inventors: Jonathan P. Walker, Donald L. Whitfill, Sharath Savari