D-LWS Blowout Preventer (BOP)
DOYLES D-LWS ram-style BOPs offer field-proven reliability to seal around drill pipe, across open hole and for shearing drill pipe. Compared to other ram preventers they feature a low overall height so minimum space is required. Single and double-cavity models are available; doubles save space and weight by combining two ram compartments into one unitized body.
FEATURES
- Low overall height compared with other ram preventers so minimum space is required.
- Available in single, and double-cavity models.
- Doubles save space & weight by combining two ram compartments into one body
- Maximum ram hardness is Rc22 to insure H2S compatibility of pipe and blind rams
- Shear rams have some harder components
- Self-draining body has a ram cavity with skids to support the rams and a sloped bottom that allows mud and sand to drain back into the well bore
- Ram rubbers have a long life in routine drilling operations and in stripping
- Rams can be changed easily without breaking or remaking hydraulic connections, even with pipe in the hole
- Rams slide horizontally onto the ram shaft except on the 4 1/16", 10000 psi BOP, where the ram mounts onto the ram shaft from above
- Single piston hydraulic operators have a minimum number of working parts to assure high reliability and low maintenance
- Flanged, hubbed or studded connections are available for end connections and side outlets on most models
- Rams are available to support a 600,000-pound drill string load when a tool joint is lowered onto the closed rams. These rams conform to H2S requirements.
- Secondary ram shaft seals furnished on all LWS preventers except 4 1/16” 5,000 and 10,000 psi, 7 1/16", 5000 psi, and 11", 3,000 psi LWS BOPs.
- Poslock® operators are available on the 4 1/16", 5,000 and 10,000 psi; 20 3/4", 3,000 psi; and 21 1/4", 2,000 psi LWS™BOPs.
- Manual-lock operators are furnished on all DOYLES LWS BOPs not equipped with Poslock®operators.