Abstract: A replaceable seat seal is used to form a replaceable portion of the ram cavity in a BOP that allows the upper central portion of the ram cavity to be replaced when wear occurs. A method is provided to produce a BOP that with a replaceable portion of the ram cavity. The single piece insert, also referred to as a single insert, utilizes only the single insert to repair the BOP as compared to another design that comprised a top insert, bottom insert, and two side inserts. The top insert of the prior art is comparable in construction and mounting position to the single insert.

Abstract: A replaceable seat seal assembly is used to form a replaceable portion of the ram cavity in a BOP that allows the central portion of the ram cavity to be replaced when wear occurs. A method is provided to refurbish a BOP that has a worn ram cavity with a replaceable portion of the ram cavity. The replaceable seat seal assembly includes a plurality of inserts such as a top insert, bottom insert, and two side inserts. The inserts of the replaceable seat seal assembly are positioned within one or more pockets or recesses machined into the ram cavity and throughbore. The inserts can be readily replaced for convenient maintenance without the need for heat treatments, welding, and the like that is normally needed to repair a used ram cavity.

Abstract: A wedge guide has two wedge surfaces. The first angled surface engages a first seat retainer positioned on one side of a gate to lock the first seat retainer in a first pocket. The wedge guide has a second angled surface that engages a second seat retainer on the other side of the gate that locks the second seat retainer in a second pocket. The wedge guide does not affect the movement of the seats that move axially between the gate and the respective seat retainers. Two wedge guides are preferably utilized on opposite non-sealing sides of the gate so that the gate slides between them.

Abstract: A wedge guide has two wedge surfaces. The first angled surface engages a first seat retainer positioned on one side of a gate to lock the first seat retainer in a first pocket. The wedge guide has a second angled surface that engages a second seat retainer on the other side of the gate that locks the second seat retainer in a second pocket. The wedge guide does not affect the movement of the seats that move axially between the gate and the respective seat retainers. Two wedge guides are preferably utilized on opposite non-sealing sides of the gate so that the gate slides between them.

Abstract: A replaceable seat seal is used to form a replaceable portion of the ram cavity in a BOP that allows the upper central portion of the ram cavity to be replaced when wear occurs. A method is provided to produce a BOP that with a replaceable portion of the ram cavity. The single piece insert, also referred to as a single insert, utilizes only the single insert to repair the BOP as compared to another design that comprised a top insert, bottom insert, and two side inserts. The top insert of the prior art is comparable in construction and mounting position to the single insert.

Abstract: A replaceable seat seal assembly is used to form a replaceable portion of the ram cavity in a BOP that allows the central portion of the ram cavity to be replaced when wear occurs. A method is provided to refurbish a BOP that has a worn ram cavity with a replaceable portion of the ram cavity. The replaceable seat seal assembly includes a plurality of inserts such as a top insert, bottom insert, and two side inserts. The inserts of the replaceable seat seal assembly are positioned within one or more pockets or recesses machined into the ram cavity and throughbore. The inserts can be readily replaced for convenient maintenance without the need for heat treatments, welding, and the like that is normally needed to repair a used ram cavity.