Api 16a Shaffer single Ram BOP For Wellhead Pressure Control For Oil Well Control

RIGRS supplies single ram BOPs for drilling and workover well-control applications. A single ram body provides one ram cavity that can be configuring for a specific sealing or shearing function.
Buyers should confirm bore size, working pressure, ram type, tubular size, top and bottom connections and service condition before quotation.

The type of the ram BOP can be dividing into four types: full sealing, semi sealing, variable diameter and shearing ram, which are using to realize well sealing under different conditions. The semi sealing ram can seal the corresponding drill pipe and tubing When there is no pipe in the well, the fully sealed ram can completely seal the wellhead, and the shear ram can cut off the drilling tool under special circumstances. In addition, the flange outlet on the side of the casing can be using for drilling fluid circulation and throttling and killing operations.

The ram blowout preventer uses hydraulic pressure to push the well sealing components—two rams with rubber cores—from the left and right sides to the center of the wellbore to close the wellhead, so it is calling the ram blowout preventer.

Ram blowout preventer function

1. The ram of some ram blowout preventers is allowing to bear load and can be using to hang drilling tools;
2. There are side holes on the shell of the ram blowout preventer, which can be using to throttle and relieve pressure;
3. The ram blowout preventer can be using for long-term well closure;
4. When there is a drilling tool in the well, the annular space at the wellhead can be closing with a semi-sealing ram corresponding to the size of the drilling tool;
5. When there is no drilling tool in the well, the fully-sealed ram can fully seal the wellhead;
6. When the drilling tool in the well needs to be cut off and the wellhead is fully sealing, the shear ram can be using to cut the drilling tool in the well and fully seal the wellhead.

Single Ram or Double Ram?

A single ram BOP provides one dedicated ram function. A double ram BOP combines two independent ram cavities in one body.
Single ram units may be selecting where one function is requiring or where stack height and weight are important. Double ram units are normally considering when two ram functions must be incorporating into the stack.

RIGRS Single Ram BOP – FAQ

Q1: Pipe ram or VBR: which should I choose?

A: Use a fixed pipe ram when one tubular OD is known. A VBR is useful when several pipe sizes need to be sealing within the ram’s qualifing range.

Q2: Can the ram type be changing later?

A: It depends on the BOP model and ram-cavity design. Confirm compatibility with the specific BOP before ordering a different ram assembly.

Q3: What data is requiring for a shear ram?

A: Provide pipe OD, wall thickness or nominal weight, material grade and available hydraulic operating pressure.

Q4: When should I choose a single rather than double ram BOP?

A: A single ram is suitable when one ram function is sufficient. A double ram is considering when two independent ram functions are requiring.

Q5: What spare parts should be ordered with a ram BOP?

A: Typical project spares may include front packers, top seals, bonnet seals and selected ram assemblies according to the maintenance plan.