Subsea Actuator

EI blowout preventers are well control components used during a subsea well intervention.


The EI Series is an integral component of the lower-wellhead riser package, featuring a single-line hydraulic system and an automatic, wedge-type autolock actuator system.

There are two sets of rams: blind shear rams and grip seal rams. A blind shear ram will cut the coiled tubing and/or wireline and form a blind seal. Grip seal rams will grab, hold, and seal around the coiled tubing. The autolock system secures the rams in the closed position in the event of a hydraulic failure or an emergency situation that requires disconnecting from the subsea wellhead.

Each EI blowout preventer (BOP) is built to your specific design requirements, which can include a dual-bore valve block with a combination of blind shear and grip seal ram assemblies. The combi rams offer increased functionality and the ability to use a wide range of coiled tubing and wireline sizes in a field-proven, compact design.

All pressure ratings and service applications are available, including certification for use in the North Sea.


  • SSR or GSR configuration for coiled tubing or wireline operations
  • 3,000- or 5,000-psi hydraulic-operating pressure
  • Single-circuit design
  • Metal-to-metal bonnet gaskets
  • Hydraulic wedgelock
  • Ram and wedgelock position indicators
  • SIL 3 certified

Subsea Actuator Specifications

Bore Working pressure Tubing range
3.06 in. 10,000 psi 1 to 1.75 in.
4.06 in. 10,000 psi 1 to 2.37 in.
5.12 in. 10,000 psi 1 to 2.87 in.
5.12 in. 15,000 psi 1 to 2.87 in.
6.38 in. 10,000 psi 1 to 3.50 in.
7.06 in. 10,000 psi 1 to 3.50 in.
7.06 in. 15,000 psi 1 to 3.50 in.
7.38 in. 10,000 psi 1 to 3.50 in.
  • Texas Oil Tools Subsea Well Intervention Equipment Catalog

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