Abstract: A modified casing coupling and burst disk assembly are used to prevent critical annular pressure buildup in an offshore well. The modified casing coupling includes a receptacle, or receptacles, for a modular burst disk assembly. The burst disk assembly is retained by threads or a snap ring and is sealed by the retaining threads, or an integral o-ring seal. The disk fails at pressure specified by the user but before trapped annular pressure threatens the integrity of the outer casing. The design allows for the burst disk assembly to be installed on location or before pipe shipment.

Abstract: A modified casing coupling that includes a receptacle, or receptacles, for a modular burst disk assembly. The burst disk assembly is retained by threads or a snap ring and is sealed by the retaining threads, or an integral o-ring seal. The. The disk fails at pressure specified by the user but before trapped annular pressure threatens the integrity of the outer casing. The design allows for the burst disk assembly to be installed on location or before pipe shipment.

Abstract: A modified casing coupling that includes a receptacle, or receptacles, for a modular burst disk assembly. The burst disk assembly is retained by threads or a snap ring and is sealed by the retaining threads, or an integral o-ring seal. The. The disk fails at pressure specified by the user but before trapped annular pressure threatens the integrity of the outer casing. The design allows for the burst disk assembly to be installed on location or before pipe shipment.

Abstract: A method for preventing critical annular pressure buildup in an offshore well utilizes a modified casing coupling that includes a receptacle, or receptacles, for a modular burst disk assembly. The burst disk assembly is retained by threads or a snap ring and is sealed by the retaining threads, or an integral o-ring seal. The disk fails at pressure specified by the user but before trapped annular pressure threatens the integrity of the outer casing. The design allows for the burst disk assembly to be installed on location or before pipe shipment.

Abstract: A method for manufacturing pipe joints for connecting two pipe sections in a well bore allows the pipe joint to have increased resistance to compressive and torsional forces. Each pipe joint has a box member for matingly engaging a pin member, the pin member being threadingly connected to the box member to create the pipe joint. Threads are created for the pin member on a tapered exterior surface of a pipe, the threads being axially disposed between a pin end terminal surface and an external shoulder. A tapered surface having a recess is created for the box member on an interior of a pipe, the tapered surface being axially located between a box end terminal surface of the pipe and an internal shoulder, the recess being axially located just behind the box end terminal surface of the pipe. Threads are cut into the tapered surface of the box member, the threads beginning behind the recess and traveling axially away from the box end terminal surface.

Abstract: A method of assembling pipe joints in a pipe string allows the circumferential orientation of a first pipe in the pipe string to be determined relative to a second pipe in the pipe string. Each pipe joint has a coupling member and at least one pin member, the pin member being threadingly connected to the coupling member to create the pipe joint. Threads are created for the pin member and the coupling member of each joint, and each pin member and coupling member is marked with an alignment mark. The threads for each pin member are created so that they are identical to the threads on the other pin members in the pipe string. This is done by gaging the overall rotational capacity of each pin member with a coupling marking gage and adjusting a thread depth as needed. The threads for each coupling member are created so that they are identical to the threads on other coupling members in the pipe string.

Abstract: A vision inspection system capable of high resolution of distanced portions of the same part is provided, allowing for dimensional calculations to be made on large parts with high resolution. A process for inspection of a part is provided, comprising the steps of: mapping a first portion of the part; mapping a second portion of the part; defining a first reference coordinate corresponding to a first reference point located on the first portion of the part; defining a second reference coordinate corresponding to a second reference point located on the second portion of the part; determining the number of coordinates between the first reference coordinate and the second reference coordinate; calculating a constant corresponding to a third portion of the part, wherein the third portion of the part is not mapped; and adding the constant to the number of coordinates between the first and the second reference coordinates.

Abstract: A power tong system for engaging or disengaging threaded pipe sections has an annular rotary member that is supported against lateral thrust and include a hinged portion that is pivotable to permit side access to a pipe. The rotary member is rotated about its central axis by a peripheral drive chain engaging the rotary member through a relatively small wrap angle. The free end of the hinged portion and the opposing end of the principal body of the rotary interlock and become more secure in self-centering fashion under the spreading forces that are exerted during operation. Structurally rigid head plates on opposite sides of the rotary member are slidable relative to the housing, and incorporate spaced apart radial bearing slots that guide oppositely disposed heads that engage the pipe with hardened die elements. Twisting moments on the heads are absorbed in the head plates, such that the heads are subjected only to uniform and symmetrical forces.

Abstract: A power tong system for engaging or disengaging threaded pipe sections has an annular rotary member that is supported against lateral thrust and include a hinged portion that is pivotable to permit side access to a pipe. The rotary member is rotated about its central axis by a peripheral drive chain engaging the rotary member through a relatively small wrap angle. The free end of the hinged portion and the opposing end of the principal body of the rotary interlock and become more secure in self-centering fashion under the spreading forces that are exerted during operation. An interlock and latching system insure against erroneous sequencing and operation without full closure of the hinged mechanisms. Structurally rigid head plates on opposite sides of the rotary member are slidable relative to the housing, and incorporate spaced apart radial bearing slots that guide oppositely disposed heads that engage the pipe with hardened die elements.