A blowout presenter (BOP) includes a main body that includes a bore extending through the main body. The BOP also includes a cavity intersecting the bore and a pair of opposing shear rams configured to shear a tubular located in the bore. The opposing shear rams are two duplicate shear rams.

An elongate component such as a drill string of drill pipes connected by joint sections inside a bore is sensed using at least one set of electromagnetic coils, the coils within the set being arranged at different angular positions around the bore facing the bore. There may be at least two sets of coils separated along the axial direction of the bore. Electrical oscillations are generated in the coils to produce oscillating electromagnetic fields that interact with the contents of the bore. A parameter of the electrical oscillations generated in each coil is detected. The detected parameters may be used to derive both (1) a measure of the axial position along the bore, and (2) a measure of the lateral position. The detected parameters may be used to derive a measure of electromagnetic properties of the contents of the pipe in a region adjacent each coil, thereby imaging the contents of the pipe.

A BOP includes a housing defining a bore, a first cavity intersecting the bore and comprising a first central axis, and a second cavity intersecting the bore and comprising a second central axis. The first central axis and the second central axis are non-parallel and the first cavity and the second cavity partially overlap along a vertical axis of the BOP.

the present invention relates to a blowout preventer system comprising, a lower blowout preventer (BOP) stack comprising a number of hydraulic components, and a lower marine riser package (LMRP) comprising a first control pod and a second control pod adapted to provide, during use, redundant control of hydraulic components of the lower blowout preventer stack where the first and the second control pods are adapted to being connected, during use, to a surface control system and to be controlled, during use, by the surface control system, wherein the blowout preventer system further comprises at least one additional control pod connected to at least one additional surface control system and to be controlled, during use, by the additional surface control system. In this way, an improved blowout preventer system is provided.

The disclosure is related to a system and method for monitoring the integrity of fluid filled connector systems. The system includes a connector with a first space and a first measurement probe. A module or a receptacle is connected to the connector and includes first wiring that is coupled with second wiring in the connector. The module or the receptacle includes a second space in fluid connection with the first space. The first space and the second space include a fluid sealed within. The second space includes a second measurement probe. A measurement device is connected to the first measurement probe and the second measurement probe to determine an impedance value across the first space and the second space. The impedance value corresponds to an integrity measure for the system based at least in part on the fluid sealed within.

The present disclosure relates to a system that includes a ram configured to mount in a blowout preventer. The ram includes a packer assembly configured to form a seal between the ram and a bore formed through the blowout preventer and an insert of the packer assembly, where the insert is coupled to a surface of the ram via a key-slot interface.

A lower stack assembly of a blowout preventer for a hydrocarbon extraction well includes a safety function that can be hydraulically activated to rapidly cut off a pipeline section. The assembly includes a first valve and a first fluidic connection connecting the first valve and the least one safety function, so that the first valve selectively cuts off a flow of fluid directed towards the safety function. The assembly further includes a port operatively connected to the first valve, cooperating with a remotely operated vehicle to transmit a pilot signal to the first valve, an accumulator housing pressurized fluid, and a second fluidic connection. By cooperating with the first valve, the accumulator supplies pressurized fluid to the safety function to activate it. The second fluidic connection connects the accumulator and the first valve, so that the second fluidic connection remains operative during the entire working life of the assembly.

A controls module for use with a subsea landing string, a blowout preventer (BOP) stack and a lower marine riser package (LMRP) is disclosed. The controls module can be integrated into the BOP stack or the LMRP or between the BOP stack and the LMRP. The controls module includes an input line that is coupled to control the subsea landing string through the BOP or the LMRP. The input line can be a hydraulic line, an electrical line, or a combination.

An autonomous BOP system is provided for stopping an uncontrolled flow of formation hydrocarbons comprising two or more sensors distributed along a length of a subsea blowout preventer to monitor a drill pipe inside a blowout preventer and measure critical parameters. A computer using predictive-software monitors a blowout preventer along with material critical parameters and calculates a blowout preventer configuration and sequence to arrest a well blowout. Blowout preventer components are fine-tuned and operational modes are added to aid an arrest of a well blowout under realistic conditions.

A flow responsiveness enhancer apparatus may include a stack of manifolds with at least one manifold dedicated to each of the rams of the blowout preventer. The flow responsiveness enhancer includes a shared pressure line coupled to each of the manifolds, and a shared tank line coupled to each of the manifolds. Each manifold can include a 4-way directional valve that is piloted by the pressure levels in a pair of input ports. Each 4-way directional valve can couple the shared pressure line and the shared tank line to a pair of output ports.