Patents by Inventor Michael Chandra

Michael Chandra 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).

  • Method of handling a gas influx in a riser
    Patent number: 9605502
    Abstract: A method of operating a system for handling an influx of gas into a marine riser during the drilling of a well bore includes the steps of operating a first riser closure apparatus to close the riser at a first point above a flow spool provided in the riser, there being a riser gas handling line extending from the riser at the flow spool to a riser gas handling manifold, operating a second riser closure apparatus to close the riser at a second point below the flow spool, pumping fluid into an inlet line which extends into the riser at a point above the second point but below the flow spool, and operating a choke provided in the riser gas handling manifold to maintain the pressure in the inlet line or the riser at a substantially constant pressure.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 28, 2017
    Assignee: MANAGED PRESSURE OPERATIONS PTE LTD
    Inventors: Christian Leuchtenberg, Michael Chandra, Carlos Goncalves
  • METHOD OF HANDLING A GAS INFLUX IN A RISER
    Publication number: 20150068758
    Abstract: A method of operating a system for handling an influx of gas into a marine riser during the drilling of a well bore includes the steps of operating a first riser closure apparatus to close the riser at a first point above a flow spool provided in the riser, there being a riser gas handling line extending from the riser at the flow spool to a riser gas handling manifold, operating a second riser closure apparatus to close the riser at a second point below the flow spool, pumping fluid into an inlet line which extends into the riser at a point above the second point but below the flow spool, and operating a choke provided in the riser gas handling manifold to maintain the pressure in the inlet line or the riser at a substantially constant pressure.
    Type: Application
    Filed: April 10, 2013
    Publication date: March 12, 2015
    Applicant: MANAGED PRESSURE OPERATIONS PTE LTD
    Inventors: Christian Leuchtenberg, Michael Chandra, Carlos Goncalves