Patents by Inventor Mojtaba P. Shahri

Mojtaba P. Shahri 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).

  • Patent number: 10227836
    Abstract: Systems and methods for wellbore strengthening are disclosed. An effective way to strengthen a wellbore and prevent future fractures during drilling operations is to induce fractures having a desired fracture width profile and fracture length. Surface back pressure can be used to accurately induce such fractures. The induced fractures which are then sealed can increase fracture gradient of the wellbore thus mitigating future fractures.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 12, 2019
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Mojtaba Karimi, Don Hannegan, Mojtaba P. Shahri, Ovunc Mutlu
  • Patent number: 9803475
    Abstract: Systems and methods for an integrated wellbore stress, stability and strengthening analysis are disclosed. An integrated geomechanical tool can be used to analyze and evaluate stress along the length of the wellbore to identify a safe drilling mud weight window and help identify troublesome zones in the wellbore. Fracture length may then be predicted in the identified troublesome zones by using a stress tensor calculated during the stress analysis. The calculated fracture length may be used to perform a strengthening analysis. After performing strengthening analysis, mud loss may be predicted based on predicted fracture size calculated during the stress, stability and strengthening analyzes.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: October 31, 2017
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Mojtaba P. Shahri, Mohammadreza Safariforoshani, Ovunc Mutlu, Trevor Oar, Mojtaba Karimi
  • Publication number: 20160161933
    Abstract: Systems and methods for designing stages that optimize production for a fracturing operation of a wellbore in a reservoir formation are disclosed. To ensure efficiency, a stage design operation generally takes into account fracture efficiency information along the length of the wellbore based on known attributes and use the efficiency information to divide the wellbore into various stages. The stage design system and method provides an automated procedure for stage design that efficiently, accurately, and with minimal human involvement partitions a wellbore along its length such that the fracture operation is optimized.
    Type: Application
    Filed: December 4, 2014
    Publication date: June 9, 2016
    Inventors: Hamed Chok, Mojtaba P. Shahri, Ovunc Mutlu
  • Publication number: 20150308209
    Abstract: Systems and methods for wellbore strengthening are disclosed. An effective way to strengthen a wellbore and prevent future fractures during drilling operations is to induce fractures having a desired fracture width profile and fracture length. Surface back pressure can be used to accurately induce such fractures. The induced fractures which are then sealed can increase fracture gradient of the wellbore thus mitigating future fractures.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 29, 2015
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Mojtaba Karimi, Don Hannegan, Mojtaba P. Shahri, Ovunc Mutlu
  • Publication number: 20150292323
    Abstract: Systems and methods for an integrated wellbore stress, stability and strengthening analysis are disclosed. An integrated geomechanical tool can be used to analyze and evaluate stress along the length of the wellbore to identify a safe drilling mud weight window and help identify troublesome zones in the wellbore. Fracture length may then be predicted in the identified troublesome zones by using a stress tensor calculated during the stress analysis. The calculated fracture length may be used to perform a strengthening analysis. After performing strengthening analysis, mud loss may be predicted based on predicted fracture size calculated during the stress, stability and strengthening analyses.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 15, 2015
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Mojtaba P. Shahri, Mohammadreza Safariforoshani, Ovunc Mutlu, Trevor Oar, Mojtaba Karimi