Abstract: A composite tubular tendon containing axial fibers and helical fibers laid on an inner liner is connected to a circular opening in a hollow termination body having an opposite curved end which is connected with an elongated member smaller than the termination body. The inner liner of the composite tubular tendon abuts the circular opening in the hollow termination body and fibers of the composite tubular tendon are extended over and cover the termination body from the point of abutment to the elongated member which is smaller than the termination body. The axial fibers of the composite tubular tendon are continued over the termination body in a geodesic path and the helical fibers are continued over the termination body in a helical path.

Abstract: A Kevlar.RTM. rope termination in which the rope is passed through an opening in a tension leg termination, is divided and laid over a rigid pin, being sealed around the pin with a resin. A flexible bearing member is located between the rope covered pin and a rigid support member contiguous with the inside of the termination, adjacent to the opening so that the rope covered pin can easily rotate within the bearing member without kinking the rope.

Abstract: A subsea storage structure for treatment and storing drill cuttings from drilling operations in the sea bottom includes a generally closed container or tank suitable to be positioned on the sea bottom near the drilling site, which tank is provided with an upper inlet for supply of drill cuttings, and an output to ambient water for water which is displaced during the supply of drill cuttings. The tank contains arrangements for cleansing of the drill cuttings and storage of accumulated oil, fluids and other constituents separated from the drill cuttings, and structure for extraction of the accumulated oil, fluids and other constitutents lighter than water.

Abstract: A lightweight, high modulus mooring element for a tension leg platform comprises a pretensioned composite member in fixed attachment to and surrounded by a metallic tubular member in compression prestress. The hybrid composite assembly offers significant cost and weight savings over an all steel mooring system for use in deep water tension leg platform mooring.

Abstract: A spike and socket cable termination assembly includes an outer socket having a substantially conical bore disposed therethrough with the bore having a smaller first open end and a larger second open end. The socket is constructed of a first material. A cable has an end portion thereof received through the smaller first open end of the substantially conical bore. A spike having a substantially conical outer surface is received through the larger second open end of the conical bore and in a center portion of the cable end portion with strands of the cable distributed in a substantially conical shape between the spike and socket. The spike is tightly wedged in the socket so that strands of the cable are held in place between the spike and socket. The spike is constructed of a second material having a modulus of elasticity substantially greater than the modulus of elasticity of the first material from which the socket is constructed.

Abstract: Lightweight well riser elements for offshore platforms are formed of an aramid fiber/resin matrix material. The well risers are preferably in tubular form and include metallic end connectors for interconnecting a plurality of tubular members to form a well riser. Alternatively, the well riser may be formed in one piece extending for the entire length from a subsea template to the well deck on a floating platform.

Abstract: A multicurvature reinforcing body comprising a pair of abutting bowl shaped members is fitted within a tubular chord member in the area of a complex joint. Cylindrical surfaces of contact of the multicurvature reinforcing body are positioned so that the longitudinal axis of an intersecting bracing member attached to the chord member passes through both of the surfaces of contact. The use of a multicurvature reinforcing body constitutes an improvement over the commonly used stiffening rings in that direct translation of tensional and compression forces acting along a bracing member which intersects at an angle other than perpendicular to the chord member to a large surface of contact within the chord member is effected.

Abstract: A flame sprayed aluminum coating of high strength steel components offers excellent seawater corrosion protection, increased fatigue life and uniform low level cathodic protection that avoids hydrogen embrittlement. Marine mooring and riser elements fabricated from such components are superior in the above respects to steel components protected from corrosion by common sacrificial anode cathodic protection systems. In addition, the need of welding a stud to the steel to insure electrical continuity between the steel and the sacrificial anodes is eliminated.

Abstract: A tubular reinforcing member having end surfaces which conform to the cylindrical inner surface of a tubular chord member are positioned within the tubular chord member at the intersection of a bracing member. The longitudinal axis of the tubular reinforcing member is positioned so as to be coincident with the longitudinal axis of the intersecting bracing member. The use of the internal tubular reinforcing member constitutes an improvement over the commonly used stiffening rings in the direct translation of tensional and compression forces acting along a bracing member is transferred to a portion of the wall of the chord member opposite to that to which the bracing member is attached.

Abstract: Lightweight mooring elements for tension leg platforms are formed of a carbon fiber/epoxy matrix material. The mooring elements are preferably in tubular form and include metallic end connectors for interconnecting a plurality of tubular members to form the mooring element. Optionally, the composite structure further includes aramid or glass fibers which increase the resistance of the mooring element to impact damage.

Abstract: A multicurvature reinforcing body comprising a pair of abutting bowl shaped members is fitted within a tubular chord member in the area of a complex joint. Cylindrical surfaces of contact of the multicurvature reinforcing body are positioned so that the longitudinal axis of an intersecting bracing member attached to the chord member passes through both of the surfaces of contact. The use of a multicurvature rinforcing body constitutes an improvement over the commonly used stiffening rings in that direct translation of tensional and compression forces acting along a bracing member which intersects at an angle other than perpendicular to the chord member to a large surface of contact within the chord member is effected.

Abstract: Strain gauges are attached to a drill pipe which is inserted into a drill pipe string to be used in a well. The strain gauges are connected to an electrical circuit containing devices for digitizing the electrical signals generated by the strain gauges in response to the detection of strain and for recording and retaining the digitized signals until the drill pipe string is extracted from the well. The electrical circuit provides a communication path through which the stored digitized data is transferred to an external device when the drill pipe string is extracted from the well.