US 9,810,044 B2
Running a mudline closure device integral with a wellhead
Henry Anthony Bergeron, Houston, TX (US)
Assigned to CHEVRON U.S.A. Inc., San Ramon, CA (US)
Filed by Chevron U.S.A. Inc., San Ramon, CA (US)
Filed on Jan. 13, 2016, as Appl. No. 14/994,865.
Prior Publication US 2017/0198555 A1, Jul. 13, 2017
Int. Cl. E21B 41/04 (2006.01); E21B 47/10 (2012.01)
CPC E21B 41/04 (2013.01) [E21B 47/1025 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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.