A rotating control device (RCD) for use in pressurized drilling operations. The RCD having a non-rotating RCD housing enclosing an elongate passage, a tubular RCD mandrel extending along the elongate passage of the RCD housing, wherein the RCD mandrel has a longitudinal axis and is configured in use to rotate relative to the RCD housing about the longitudinal axis, and a stripper element which is mounted on an end of the RCD mandrel and which is configured to seal against and rotate with a tubular drill pipe extending along the elongate passage of the RCD housing, wherein the stripper element is secured to the end of the RCD mandrel by a flexible sleeve which is more flexible than the stripper element.

A system including a mud bucket with a clam shell enclosure and a storage tank. The clam shell enclosure can have a first portion and a second portion, with the second portion being rotationally coupled to the first portion, where the first portion and the second portion are configured to form a sealed chamber around a joint of a tubular string when the second portion is rotated into engagement with the first portion, where the sealed chamber is configured to receive expelled fluid from the tubular string when the joint is unthreaded, and the storage tank is configured to receive and store the expelled fluid from the sealed chamber while the mud bucket is located at the well center.

A system including a mud bucket with a clam shell enclosure and a storage tank. The clam shell enclosure can have a first portion and a second portion, with the second portion being rotationally coupled to the first portion, where the first portion and the second portion are configured to form a sealed chamber around a joint of a tubular string when the second portion is rotated into engagement with the first portion, where the sealed chamber is configured to receive expelled fluid from the tubular string when the joint is unthreaded, and the storage tank is configured to receive and store the expelled fluid from the sealed chamber while the mud bucket is located at the well center.

A rotating head assembly includes a body, an implement, a clamp assembly, a drive member, a hydraulic motor, and a bypass circuit. The drive member is threadingly connected to a first clamp member and a second clamp member. The hydraulic motor is connected to the drive member to cause the drive member to rotate in a selected direction. An inlet of the bypass circuit is in fluid communication with an inlet of the hydraulic motor to receive a portion of the pressurized hydraulic fluid passing to the hydraulic motor. An outlet of the bypass circuit is in fluid communication with the outlet of the hydraulic motor. At least one bypass valve is interposed between the inlet of the bypass circuit and the outlet of the bypass circuit. The bypass valve has an actuator positioned adjacent one of the first clamp member and the second clamp.

A rotating head assembly includes a body, an implement, a clamp assembly, a drive member, a hydraulic motor, and a bypass circuit. The drive member is threadingly connected to a first clamp member and a second clamp member. The hydraulic motor is connected to the drive member to cause the drive member to rotate in a selected direction. An inlet of the bypass circuit is in fluid communication with an inlet of the hydraulic motor to receive a portion of the pressurized hydraulic fluid passing to the hydraulic motor. An outlet of the bypass circuit is in fluid communication with the outlet of the hydraulic motor. At least one bypass valve is interposed between the inlet of the bypass circuit and the outlet of the bypass circuit. The bypass valve has an actuator positioned adjacent one of the first clamp member and the second clamp.

A rod lock out clamp is disclosed. The lock out clamp includes a housing having a central bore for receiving a rod in spaced relation therethrough and clamp members in the housing for grippingly and frictionally engaging the rod in the bore. At least one of the clamp members has an inner end and a recess in the inner end, the recess having a profile with an arcuate portion having a radius of curvature that reduces from a maximum radius to a minimum radius. Manipulating means are coupled to the housing and the clamp members for moving the clamp members between a rod gripping position and a retracted position.

A frac dart includes a body having an outer surface and an end including at least one opening. A cutter support is mounted at the end adjacent the at least one opening. A cutter is moveably mounted at the cutter support. A counter support is slideably mounted on the outer surface, and a counter is arranged between the counter support and the cutter support. The cutter is operable to sever a portion of the counter.

A frac dart includes a body having an outer surface and an end including at least one opening. A cutter support is mounted at the end adjacent the at least one opening. A cutter is moveably mounted at the cutter support. A counter support is slideably mounted on the outer surface, and a counter is arranged between the counter support and the cutter support. The cutter is operable to sever a portion of the counter.

A stuffing box assembly for an artificial lift system includes a stuffing box including a housing having a passage, in which the housing has a shoulder disposed along the passage. The stuffing box also includes a seal disposed within the passage and engaged with the shoulder. The seal is configured to engage a polish rod while the polish rod extends through the passage, and the seal is configured to expand radially in response to longitudinal compression of the seal. In addition, the stuffing box includes an actuator having an engagement element configured to move along a longitudinal axis to compress the seal. Furthermore, the stuffing box assembly includes a controller configured to determine a flow rate of fluid bypassing the seal based on one or more input signals, and the controller is configured to control the actuator based on the flow rate.

A stuffing box assembly for an artificial lift system includes a stuffing box including a housing having a passage, in which the housing has a shoulder disposed along the passage. The stuffing box also includes a seal disposed within the passage and engaged with the shoulder. The seal is configured to engage a polish rod while the polish rod extends through the passage, and the seal is configured to expand radially in response to longitudinal compression of the seal. In addition, the stuffing box includes an actuator having an engagement element configured to move along a longitudinal axis to compress the seal. Furthermore, the stuffing box assembly includes a controller configured to determine a flow rate of fluid bypassing the seal based on one or more input signals, and the controller is configured to control the actuator based on the flow rate.