Running a mudline closure device integral with a wellhead
AssigneeChevron U.S.A. Inc.
InventorHenry Anthony Bergeron
Life of this patent
Estimating the term…
Abstract
A running tool assembly for running a high pressure wellhead and a mudline closure device (MCD) to or near a seafloor includes test plug detachably attached within the running tool assembly. Methods of running a high pressure wellhead and a MCD to or near a seafloor using the running tool assembly are provided. Methods of testing the MCD are also provided.
Claims19
A running tool assembly for running a high pressure wellhead and a mudline closure device (MCD) to or near a seafloor, the running tool assembly comprising:
- an upper pipe;
- a test plug release mechanism detachably coupled to the upper pipe in the running tool assembly;
- an inner diameter isolation tool coupled to the test plug release mechanism;
- a test plug;
- a lower pipe that is below the upper pipe, wherein the test plug is coupled to the lower pipe;
- and
- a weight bearing running tool, wherein the weight bearing running tool is coupled between the MCD and the upper pipe, wherein the weight bearing running tool comprises a pressure equalization mechanism.
A method of running a high pressure wellhead and a mudline closure device (MCD) to or near a seafloor, the method comprising:
- attaching a casing to the high pressure wellhead prior to running the high pressure wellhead to or near the seafloor;
- attaching the MCD to the high pressure wellhead prior to running the high pressure wellhead to or near the seafloor;
- attaching a running tool assembly to the high pressure wellhead;
- attaching a running string to the running tool assembly;
- and
- running the casing, the MCD, and the high pressure wellhead together to or near the seafloor using the running tool assembly that is attached to the high pressure wellhead.
A method of testing a mudline closure device (MCD), the method comprising:
- attaching a casing to a high pressure wellhead prior to running the high pressure wellhead to or near a seafloor;
- attaching the MCD to the high pressure wellhead prior to running the high pressure wellhead to or near the seafloor;
- attaching a running tool assembly to the high pressure wellhead;
- running the casing, the MCD, and the high pressure wellhead to or near the seafloor using the running tool assembly that is attached to the high pressure wellhead;
- and
- testing the MCD.
Dependencies are inferred from the claim text.