Abstract: A lift sub handling assembly for gripping, handling and maneuvering a lift sub or other tubular member. A yoke member defining a slot is rotatably attached to a lifting frame which, in turn, can be suspended from a hoist, winch or other lifting device. A gate can be selectively opened to a lift sub or other tubular member to be received within the slot, and thereafter closed to secure the lift sub or other tubular member in place. A motor can selectively rotate the yoke member relative to the lifting frame, thereby changing orientation of a lift sub or other tubular member held within the slot.

Abstract: An extended stabbing assembly permits quick and efficient installation of a stabbing guide on a first threaded connection member from a safe distance away from said threaded connection member, and removal of said stabbing guide following completion of a pipe make-up (connection) operation. A pair of opposing arcuate arm members are attached to a yoke member, which is attached to an elongate extension rod. The opposing arcuate members can be selectively alternated between a first (substantially open or spread apart) position and a second (partially closed or inwardly pointing) position. Tapered pipe guide members extend from the upper surface of the arcuate arm members and yoke member.

Abstract: Mats, pipe stands, and/or other structures, and methods for receiving fluid drained from one or more oilfield tubulars are described. Usable mats can include a base member at least partially impermeable to fluid from the oilfield tubulars, a first plurality of support arms secured to the top surface of the base member, and a second plurality of support arms intersecting the first plurality of support arms. The intersection between the pluralities of support arms defines openings through which fluid from oilfield tubulars supported on top of the support members or within the openings can drain, such that fluid from the tubulars does not spread on a rig floor or other surface beneath the base member. The base member and/or support arms are provided with a height and/or thickness adapted to support the weight of one or more oilfield tubulars placed thereon.

Abstract: Methods and systems for detecting subsea cement returns, leaks in subsea cement, leaks in blowout preventer operating systems or other equipment or conduits, or the presence of sweep or spacer media subsea or at the surface, include mixing an indicator, such as sodium fluorescein, with a quantity of cement or other medium, the indicator being insulated from contact with the subsea environment. The medium and indicator can be provided into a subsea wellbore, and upon contact of a portion of the medium with the subsea environment, the indicator can become detectable. Exposing the subsea environment proximate to the wellbore to a detector, such as an ultraviolet light source, enables detection of the indicator, and thereby, detection of the medium, which can indicate a cement return or leak of operating fluids in a subsea blowout preventer system.

Abstract: Mats, pipe stands, and/or other structures, and methods for receiving fluid drained from one or more oilfield tubulars are described. Usable mats can include a base member at least partially impermeable to fluid from the oilfield tubulars, a first plurality of support arms secured to the top surface of the base member, and a second plurality of support arms intersecting the first plurality of support arms. The intersection between the pluralities of support arms defines openings through which fluid from oilfield tubulars supported on top of the support members or within the openings can drain, such that fluid from the tubulars does not spread on a rig floor or other surface beneath the base member. The base member and/or support arms are provided with a height and/or thickness adapted to support the weight of one or more oilfield tubulars placed thereon.