Patents by Inventor Mehmet Parlar

Mehmet Parlar 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: 20040014606
    Abstract: This invention proposes a method for completing an interval of an open-hole injection wellbore penetrating a subterranean formation, said wellbore being communicating with the formation by way of an interface that comprises at least a filter cake invaded zone comprising bridging materials and other embedded solid materials, said method comprising the steps of injecting a clean-up fluid and contacting it with the filtercake for a period of time sufficient to loose some of the other solids embedded in the filter cake; removing the loosened solids by a high-rate displacement fluid comprising suspending additives; and then injecting a dissolving fluid comprising a diverter and an effective amount of a salt or acid capable of dissolving the bridging material.
    Type: Application
    Filed: March 25, 2003
    Publication date: January 22, 2004
    Applicant: SCHLUMBERGER TECHNOLOGY CORP
    Inventors: Mehmet Parlar, Mark Brady, Liz Morris
  • Publication number: 20030216263
    Abstract: The Invention relates to novel fluids and techniques to optimize/enhance the production of hydrocarbon from subterranean formations (e.g., “completion fluids”), in particular, fluids and techniques are disclosed and claimed which remove wellbore damage and near-wellbore damage in the form of coating formed from drilling and production-related operations (“filtercake”); the techniques can be applied either by themselves or in conjunction with other completion operations, such as gravel packing; preferred embodiments are chelating agent and enzyme systems in a viscoelastic surfactant (VES) matrix.
    Type: Application
    Filed: April 30, 2003
    Publication date: November 20, 2003
    Inventors: Raymond J. Tibbles, Mehmet Parlar, Frank F. Chang, Diankui Fu, Jonathan Mark Davison, Elizabeth W.A. Morris, Antje M. Wierenga, Palathinkara S. Vinod
  • Patent number: 6638896
    Abstract: The Invention relates to fluids and techniques to optimize/enhance the production of hydrocarbon from subterranean formations (e.g., “completion fluids”), in particular, fluids and techniques are. disclosed and claimed which remove wellbore damage and near-wellbore damage in the form of coating formed from drilling and production-related operations (“filtercake”); the techniques can be applied either by themselves or in conjunction with other completion operations, such as gravel packing; preferred embodiments are chelating agent and enzyme systems in a viscoelastic surfactant (VES) matrix.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 28, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Raymond J. Tibbles, Mehmet Parlar, Frank F. Chang, Diankui Fu, Jonathan Mark Davison, Elizabeth W. A. Morris, Antje M. Wierenga, Palathinkara S. Vinod
  • Patent number: 6631764
    Abstract: A method of gravel packing a wellbore which has at least one aperture therein that provides a fluid flow path between the wellbore and an adjacent subterranean formation. At least a part of the formation adjacent to the open hole has a filter cake coated thereon that comprises a water and oil emulsion. The method of gravel packing comprises injecting into the wellbore a gravel pack composition that comprises gravel and a carrier fluid. The carrier fluid comprises an aqueous liquid having a pH that is outside the range at which the filter cake emulsion is stable. The aqueous liquid is present in an amount effective to invert the water in oil emulsion in the filter cake when the carrier fluid comes into contact with the filter cake. As a result, gravel is deposited at or adjacent to the aperture in the wellbore and some of the filter cake is removed.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: October 14, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Mehmet Parlar, Colin J. Price-Smith, Raymond J. Tibbles, Shrihari Kelkar, Mark E. Brady, Elizabeth W. A. Morris
  • Publication number: 20030188866
    Abstract: An apparatus for use in wellbores that enables the running in, washing down, gravel packing, reversing excess slurry, and the spotting of post gravel pack fluids on a single trip. The one trip apparatus comprises a housing having an exterior and a longitudinal bore extending therethrough, and a lateral port providing a communication path between the housing longitudinal bore and the exterior of the housing. A first sleeve is disposed within the housing longitudinal bore that has a longitudinal passageway therethrough and is capable of being positioned in an upper position and a lower position relative to the housing. First and second lateral passageways extend through the wall of the first sleeve. A second sleeve is disposed within the first sleeve and also has a longitudinal passageway therethrough. The second sleeve is capable of being positioned in an upper position and a lower position relative to the first sleeve.
    Type: Application
    Filed: May 7, 2003
    Publication date: October 9, 2003
    Inventors: Harold S. Bissonnette, Jake A. Danos, Mehmet Parlar, Colin J. Price-Smith
  • Patent number: 6571875
    Abstract: A circulation tool includes a housing having a longitudinal bore therethrough, a wall, and at least one lateral port through the housing wall and at least two sliding sleeves. At least one circulation flow passage is disposed within the housing wall. A plurality of circulation paths are created by the selective positioning of the at least two sliding sleeves.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: June 3, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Harold S. Bissonnette, Jake A. Danos, Mehmet Parlar, Colin J. Price-Smith
  • Publication number: 20020033259
    Abstract: The present invention discloses a system using a conduit run into a well on a service string. In one embodiment the conduit includes outlets along its length to permit a sand control treatment to exit the conduit along the length of the conduit and distribute the sand control treatment along the length of the conduit. The conduit can have a plurality of such outlets spaced to provide an even distribution of the sand control treatment. The conduit can be attached to the delivery tubing (such as coiled tubing or service string tubing) via a releasable connector. The conduit is deployed on the delivery tubing and connector (and is in fluid communication therewith) in the well adjacent to an area to be treated. The sand control treatment is pumped into the well. Once the sand control treatment is complete, the releasable connector is released to disconnect the conduit from the delivery tubing and the delivery tubing is removed from the well.
    Type: Application
    Filed: July 20, 2001
    Publication date: March 21, 2002
    Inventors: Graham Watson, Geoffrey R. Kernick, Colin J. Price-Smith, Mehmet Parlar
  • Publication number: 20020033260
    Abstract: Present invention relates to high brine carrier fluid, said carrier fluid selected from the group consisting of organic acids, organic acid salts, inorganic salts and combination of one or more organic acids or organic acid salts, a co-surfactant and an amount of a zwitterionic surfactant. The invention also relates to methods of treating a subterranean wellbore, including drilling, hydraulic fracturing, gravel placement, scale removing, mud cake removing, using said high brine carrier fluid.
    Type: Application
    Filed: July 30, 2001
    Publication date: March 21, 2002
    Inventors: Bernhard Lungwitz, Mark E. Brady, Sylvie Daniel, Mehmet Parlar, Colin J. Price-Smith, Elizabeth Morris
  • Patent number: 6342467
    Abstract: A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly packaging. The chemical system contains a linear HEC polymer solution, a low solubility compound which slowly raises the fluid pH, a chelating agent which further increases the pH level beyond the equilibrium achievable by the low solubility compound, a metal crosslinker which crosslinks HEC at elevated pH, a crosslink delaying agent which allows fluid viscosity to remain low until the fluid reaches the subterranean formation, and optionally an internal breaker. The chemical additives are packaged as an integrated pallet and transported to a field location which allows operators to conveniently mix them before pumping.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: January 29, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Frank F. Chang, Mehmet Parlar
  • Publication number: 20010047867
    Abstract: An apparatus for use in wellbores that enables the running in, washing down, gravel packing, reversing excess slurry, and the spotting of post gravel pack fluids on a single trip. The one trip apparatus comprises a housing having an exterior and a longitudinal bore extending therethrough, and a lateral port providing a communication path between the housing longitudinal bore and the exterior of the housing. A first sleeve is disposed within the housing longitudinal bore that has a longitudinal passageway therethrough and is capable of being positioned in an upper position and a lower position relative to the housing. First and second lateral passageways extend through the wall of the first sleeve. A second sleeve is disposed within the first sleeve and also has a longitudinal passageway therethrough. The second sleeve is capable of being positioned in an upper position and a lower position relative to the first sleeve.
    Type: Application
    Filed: February 13, 2001
    Publication date: December 6, 2001
    Inventors: Harold S. Bissonnette, Jake A. Danos, Mehmet Parlar, Colin J. Price-Smith
  • Publication number: 20010036905
    Abstract: A method is disclosed of gravel packing a wellbore which has at least one aperture therein that provides a fluid flow path between the wellbore and an adjacent subterranean formation. At least a part of the formation adjacent to the open hole has a filter cake coated thereon that comprises a water and oil emulsion. The method of gravel packing comprises injecting into the wellbore a gravel pack composition that comprises gravel and a carrier fluid. The carrier fluid comprises an aqueous liquid having a pH that is outside the range at which the filter cake emulsion is stable. The aqueous liquid is present in an amount effective to invert the water in oil emulsion in the filter cake when the carrier fluid comes into contact with the filter cake. As a result, gravel is deposited at or adjacent to the aperture in the wellbore and some of the filter cake is removed.
    Type: Application
    Filed: February 6, 2001
    Publication date: November 1, 2001
    Inventors: Mehmet Parlar, Colin J. Price-Smith, Raymond J. Tibbles, Shrihari Kelkar, Mark E. Brady, Elizabeth W.A. Morris
  • Patent number: 6165947
    Abstract: A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly packaging. The chemical system contains a linear HEC polymer solution, a low solubility compound which slowly raises the fluid pH, a chelating agent which further increases the pH level beyond the equilibum achievable by the low solubility compound, a metal crosslinker which crosslinks HEC at elevated pH, a crosslink delaying agent which allows fluid viscosity to remain low until the fluid reaches the subterranean formation, and optionally an internal breaker. The chemical additives are packaged as an integrated pallet and transported to a field location which allows operators to conveniently mix them before pumping.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: December 26, 2000
    Inventors: Frank F. Chang, Mehmet Parlar
  • Patent number: 6140277
    Abstract: The Invention relates to novel fluids and techniques to optimize/enhance the production of hydrocarbon from subterranean formations (e.g., "completion fluids"), in particular, fluids and techniques are disclosed and claimed which remove wellbore damage and near-wellbore damage in the form of coating formed from drilling and production-related operations ("filtercake"); the techniques can be applied either by themselves or in conjunction with other completion operations, such as gravel packing; preferred embodiments are chelating agent and enzyme systems in a viscoelastic surfactant (VES) matrix.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: October 31, 2000
    Assignee: Schlumberger Technology Corporation
    Inventors: Raymond J. Tibbles, Mehmet Parlar, Frank F. Chang, Diankui Fu, Jonathan Mark Davison, Elizabeth W. A. Morris, Antje M. Wierenga, Palathinkara S. Vinod
  • Patent number: 5981447
    Abstract: A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly packaging. The chemical system contains a linear HEC polymer solution, a low solubility compound which slowly raises the fluid pH, a chelating agent which further increases the pH level beyond the equilibrium achievable by the low solubility compound, a metal crosslinker which crosslinks HEC at elevated pH, a crosslink delaying agent which allows fluid viscosity to remain low until the fluid reaches the subterranean formation, and optionally an internal breaker. The chemical additives are packaged as an integrated pallet and transported to a field location which allows operators to conveniently mix them before pumping.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 9, 1999
    Assignee: Schlumberger Technology Corporation
    Inventors: Frank F. Chang, Mehmet Parlar