SURFACE TEST TREE
Surface Test Tree : Deepwater Completion Operations
The M&M Oil Tools Control Surface Test Tree, or flowhead, is used
for well control during deep water completion operations. It has the
shortest overall length in the industry, with a patent-pending
swivel design that is lightweight and compact, fitting through most
v-doors. The surface test tree also comes with landing string
crossovers; and is adaptable to different configurations. Designed
to meet API 6A requirements.
General information about the Surface Test Tree: The Surface Test
Tree (Flowhead) consists of four valves: a master valve, two wing
valves, and a swab valve. The outlet wing valve is opened and closed
using a hydraulic actuator. Above the swab valve is a lifting
subassembly (sub) with a threaded connection.
Description
Components
The surface test tree utilizes M&M Oil Tools patented PWC
CARTRIDGETM valve; its unique floating ball and
spring-loaded seat design forces pressure and flow through the seat,
not around its exterior. This eliminates unreliable single direction
seat seals, erosion and fouling/binding frequently seen in
competitive designs. Our floating vented ball and double floating
seats guarantee differential pressure by acting only across the
downstream side of the ball and seat to minimize the load, prevent
distortion of the ball and protect seat support arms. These
features, combined with a proprietary stem bearing, reduce the
torque required to operate the valve by 50% compared to other
designs.