A ball valve apparatus includes a housing defining a housing inlet and a housing outlet and a valve cartridge mounted within the housing and defining a cartridge flow path extending between a cartridge inlet and a cartridge outlet, wherein the cartridge inlet is arranged in fluid communication with the housing inlet and the cartridge outlet is arranged in fluid communication with the housing outlet. A ball valve member is mounted within the valve cartridge and is rotatable to selectively open and close the cartridge flow path. A leak chamber is defined between the housing and the cartridge for containing fluid leakage from the valve cartridge.

A modular manifold system includes a first manifold ring which comprises a first tubular body defined by an inner wall, an outer wall, a first end, and a second end. The inner wall and the outer wall extend between the first end and the second end. The first manifold ring also includes a first path formed between the inner wall and the outer wall and extending to at least one of the first end and the second end. At least one of the first end and second end comprises a coupling feature configured to couple the first manifold ring to a second manifold ring or well equipment. The first path is put in fluid communication or electrical communication with the second manifold ring or well equipment when the first manifold ring is coupled to the second manifold ring.

A circulation mechanism in a subsea assembly is selectively actuated to allow fluid communication between the riser annulus and tubing string to immediately kill the well using heavy-weight fluid in the riser annulus; perform well control operations by adjusting the weight or other properties of fluid in the tubing string or riser annulus; and/or to circulate the riser of a deep-water well undergoing well testing or intervention.

A stress reactive valve includes a valve body disposed in a subsea safety system or other elongated components of hydrocarbon production systems. The valve body includes a frangible or breakable material such that when the subsea safety system or other elongated system undergoes a stress, such as a bending stress, the frangible valve body can react to the stress by breaking and thereby establishing fluid communication or a fluid path across the valve body. In a first or unbroken condition of the valve body, the valve body prevents fluid communication between a fluid inlet and a fluid outlet. In a second or broken condition of the valve body, fluid communication is allowed between the fluid inlet and outlet. The fluid communication can be used to actuate a device, or the fluid pressure can be used as pilot pressure to actuate a pilot operated valve system.

A drill string coupling and uncoupling method includes forming a well bore by conducting a drilling operation using a drill string having a first drill string segment and a second drill string segment detachably coupled to the first drill string segment; immobilizing the second drill string segment in the well bore; uncoupling the first drill string segment from the second drill string segment; at least partially retracting the first drill string segment in the well bore away from the second drill string segment; reinserting the first drill string segment in the well bore to the second drill string segment; and re-coupling the first drill string segment to the second drill string segment.

Methods for deploying a coiled tubing string into a wellbore include providing a coiled tubing having a distal end and an opposing end connected with a reel, providing a tool including a tool body, a valve operable under wellbore pressure disposed within the tool body, and a first fluid passageway and a second fluid passageway defined within the tool body. Fluid communication is established through the distal end of the coiled tubing and the first fluid passageway and the second fluid passageway, and the coiled tubing and tool are deployed into the wellbore.

A system and method utilizing a painted joint simulator to reduce the time required to conduct a dummy run in order to space out subsea test equipment within a blow-out preventer. In certain embodiments, a heavy weight fluid is injected into a chamber of the joint in order to assist in its downhole descent speed. In other embodiment, a high pressure fluid is injected into a second chamber of the joint in order to force the heavy weight fluid out of the joint in order to assists in the assent back to the surface. Other embodiments include an umbrella assembly that assists in the descent or assent of the painted joint.

A landing string includes a valve having a valve member mounted within a flow path extending through the landing string, and a valve control system for use in operating the valve to move the valve member between open and closed positions to control flow along the flow path. The valve control system is reconfigurable between a first configuration in which the valve is operated or controlled under a fail-as-is (FAI) mode of operation, and a second configuration in which the valve is operated or controlled under a fail-close (FC) mode of operation.

A valve apparatus (10) comprises a housing (12) defining a flow path (14), a valve seat (42) located within the housing (12) around a periphery of the flow path (14), a carriage member (16) located within the housing (12), a cutting arrangement (28) mounted on the carriage member (16), and a valve member (32) mounted on the carriage member (16) via a connection assembly (34) which permits relative movement between the valve member (32) and the carriage member (16). The carriage member (16) is moveable from a first position towards a second position to drive the cutting arrangement (28) across the flow path (14) and to move the valve member (32) into a position in which relative movement between the valve member (32) and the carriage member (16) permits the valve member (32) to sealingly engage and disengage the valve seat (42) to control flow along the flow path (14).

A system and method to determine and adjust positioning of a subsea test tree (SSTT) within a blowout preventer (BOP), the system including an SSTT, at least one sensing mechanisms to detect the position of one or more BOP rams and a fluted hanger. Once the assembly is deployed, the ram positions are detected and the position of the fluted hanger is adjusted while deployed to accordingly adjust the spacing between the SSTT and the fluted hanger, thereby eliminating the need of a dummy run. Another system and method improves a dummy run by providing a lightweight joint and dummy hanger deployed on a line (e.g., wireline, slickline, etc.). Through the use of a line and the lightweight of the joint and dummy hanger, the dummy run operation is conducted quickly and efficiently.