An improved top pot assembly utilizes an attachment body for attaching the rubber to a bearing assembly for rotation with the inner barrel. The attachment body simplifies the replacement of the rubber on the drilling assembly. The attachment body provides a guide that slopes downward into the central aperture and the bore to guide the mandrel and drilling string towards the bore. The attachment body also provides a stripper receiver for attachment of the rubber to the attachment body. The attachment body attaches to the housing which attaches to the bearing assembly for rotation of the rubber and the inner barrel.

A hydraulic control system for blowout preventers systems, frack valves and chokes, and related wellhead and control equipment used in oil and gas well drilling operations. The hydraulic control system can include one or more hydraulic control valves or pressure regulators including an internal, linear slider and pairs of seal rings. Lapped and polished surfaces of the seal rings and sliders can form a dynamic metal-to-metal seal within the hydraulic control valves or pressure regulators.

A hydraulic control system for blowout preventers systems, frack valves and chokes, and related wellhead and control equipment used in oil and gas well drilling operations. The hydraulic control system can include one or more hydraulic control valves or pressure regulators including an internal, linear slider and pairs of seal rings. Lapped and polished surfaces of the seal rings and sliders can form a dynamic metal-to-metal seal within the hydraulic control valves or pressure regulators.

A sealing apparatus includes a moveable seal holder with a cavity and includes a seal assembly disposed at least partially in the cavity. The seal assembly includes a resilient seal member including a fluid-facing end with a fluid-facing end surface, and the seal assembly includes an actuator plate configured to reciprocate between a first and a second position relative to the protective plate. The first actuator plate includes a fluid-facing end surface and a first camming surface. The seal assembly further includes a first protective plate disposed between the seal member and the first actuator plate. The actuator plate is configured to compress the seal member and to move the fluid-facing end surface of the seal member outward from a resting position when the actuator plate is in the second position.

A system and method for shutting in a wellbore in the event that primary blow-out preventer (BOP) system fails. The system comprises a smart-BOP shear ram system that operates independently and autonomously from the primary BOP system and that includes a pneumatically actuated shear ram installed on top of the primary BOP preventers. A dedicated control system and pneumatic pump are encased inside one or more explosion proof boxes. The control system detects primary BOP failure using sensors located above and below the primary BOP shear ram and actuates the smart-BOP shear ram accordingly. The control system is configured such that, activation of the primary BOP stack automatically activates the smart-BOP shear ram system and the control unit assumes autonomous control over operation of the smart-BOP shear ram until the control unit confirms that a complete seal has been made against the wellbore fluids.

A modular downhole packer includes a valve body, which includes a threaded coupler adapted to couple to a tubular and a valve assembly. The packer includes a packer element assembly, which includes a first end coupler, the first end coupler mechanically coupled to the valve body; a packer element; and a second end coupler. The packer includes a floating seal element mechanically coupled to the second end coupler, the floating seal element including a seal extension. The packer includes a floating end anchor. The floating end anchor includes a compression seal housing, the compression seal housing including an outer sealing surface positioned within the seal extension of the second end coupler; a compression seal positioned within a seal pocket formed in the compression seal housing; and an anchor body, the anchor body threadedly coupled to the seal pocket of the compression seal housing, the anchor body abutting the compression seal.

A drilling rig may include a detachable, modular cellar arranged beneath a drill floor of the drilling rig. The cellar may be or include a cellar trailer and it may also be configured to house drilling equipment, such as well head equipment and/or one or more blowout preventers. The cellar trailer may provide work areas, such that the well head equipment may be prepared, tested, or generally operated within the cellar trailer. The cellar trailer may additionally be configured to provide stiffening support to the drill floor in order to mitigate deflection of the drill floor during drilling operations. The stiffening support may be provided by a shear wall extending from the cellar trailer. The cellar trailer may be towable. The cellar trailer may additionally be skiddable and/or walkable.

A drilling rig may include a detachable, modular cellar arranged beneath a drill floor of the drilling rig. The cellar may be or include a cellar trailer and it may also be configured to house drilling equipment, such as well head equipment and/or one or more blowout preventers. The cellar trailer may provide work areas, such that the well head equipment may be prepared, tested, or generally operated within the cellar trailer. The cellar trailer may additionally be configured to provide stiffening support to the drill floor in order to mitigate deflection of the drill floor during drilling operations. The stiffening support may be provided by a shear wall extending from the cellar trailer. The cellar trailer may be towable. The cellar trailer may additionally be skiddable and/or walkable.

The present invention relates to devices and methods for transporting a Blow Out Preventer (BOP). A device for transporting and installing a BOP stack for a land-based drilling rig, comprises a skid for transporting a BOP stack in a substantially horizontal position. The device comprises a moveable support configured to be fixed removably to one end of the BOP stack and to translate longitudinally on the skid, where a section of the skid is extendable longitudinally outwards from an end of the skid, into an extended configuration in which the section can placed adjacent to or on a place of installation of the BOP stack, and is configured to be part of the skid on which the moveable support is configured to translate, so that the moveable support may translate longitudinally onto the section of the skid, in its extended configuration, to be above the place of installation.

The present invention relates to devices and methods for transporting a Blow Out Preventer (BOP). A device for transporting and installing a BOP stack for a land-based drilling rig, comprises a skid for transporting a BOP stack in a substantially horizontal position. The device comprises a moveable support configured to be fixed removably to one end of the BOP stack and to translate longitudinally on the skid, where a section of the skid is extendable longitudinally outwards from an end of the skid, into an extended configuration in which the section can placed adjacent to or on a place of installation of the BOP stack, and is configured to be part of the skid on which the moveable support is configured to translate, so that the moveable support may translate longitudinally onto the section of the skid, in its extended configuration, to be above the place of installation.