METHOD OF HANDLING A GAS INFLUX IN A RISER
2 Assignments
0 Petitions
Accused Products
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.
22 Citations
57 Claims
-
1-29. -29. (canceled)
-
30. A method of operating a system for handling an influx of gas into a marine riser during the drilling of a well bore, the method including 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 that 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. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
-
Specification