Abstract: A high-pressure, high-temperature tieback system including a production casing tieback tool consisting of a ratchet-latch sleeve disposed in a recessed portion of an annular extension of increased wall thickness of the production casing tieback tool and a production casing mudline hanger disposed about the production casing tieback tool. The production casing tieback tool is configured to directly engage the production casing mudline hanger. The ratchet-latch sleeve is configured to directly engage a threaded axial segment of a tubular other than the production casing mudline hanger.

Abstract: In accordance with certain embodiments, the present invention provides a theft-deterrence device, which can be used to deter theft of oil-and-gas equipment. For example, one such embodiment provides a nut-and-bolt assembly that includes an extended bolt and a standard the hexagonal nut. To deter theft, the exemplary assembly includes an outer sleeve that is disposed about the nut and extended bolt and that is free to rotate. Resultantly, the sleeve prevents the application of torque to the nut and also protects against shearing of the extended stud. The exemplary assembly also includes a tamper-resistant screw extending through the stud and cooperating with a retaining ring disposed above the nut, to prevent removal of the outer sleeve.

Abstract: A high-pressure, high-temperature tieback system including a production casing tieback tool consisting of a ratchet-latch sleeve disposed in a recessed portion of an annular extension of increased wall thickness of the production casing tieback tool and a production casing mudline hanger disposed about the production casing tieback tool. The production casing tieback tool is configured to directly engage the production casing mudline hanger. The ratchet-latch sleeve is configured to directly engage a threaded axial segment of a tubular other than the production casing mudline hanger.

Abstract: In accordance with certain embodiments, the present invention provides a theft-deterrence device, which can be used to deter theft of oil-and-gas equipment. For example, one such embodiment provides a nut-and-bolt assembly that includes an extended bolt and a standard the hexagonal nut. To deter theft, the exemplary assembly includes an outer sleeve that is disposed about the nut and extended bolt and that is free to rotate. Resultantly, the sleeve prevents the application of torque to the nut and also protects against shearing of the extended stud. The exemplary assembly also includes a tamper-resistant screw extending through the stud and cooperating with a retaining ring disposed above the nut, to prevent removal of the outer sleeve.