Tdw Delaware, Inc.

R.b. Williamson Energy Advisors LLC

Joseph Alan Morton

Roger L Poe

Robert Fulton Hendricks

Eric N Freeman

Dixit B Kadakia

Jeffrey Monroe Wilson

Ed Maynard

Joshua Dean Mitchell

William C Keenan

Aaron M Ritchie

Darrin Kenneth Turner

Samuel R Boehning

William J Tefft

Robert Bockmeulen

Jonathan Luke Beam

David Kenneth Turner

Richard Brooks Williamson

Lawrence Dean Alspaugh

Joshua Mitchell

William Keenan

William Tefft

Systems and methods of this disclosure make use of positive pressure to evacuate pipeline product contained within an isolated section of pipeline. In embodiments, an inert fluid is injected at a first location along the isolated section at a pressure above that of a non-isolated section of pipeline The displaced pipeline product, which may be filtered, then flows out of the isolated section at second location along the isolated section and into the non-isolated section. In other embodiments, a pressure differential between the isolated and non-isolated sections is created by lowering a pressure of the non-isolated section below that of the isolated section. The pipeline product may be a liquid, a gas, or a mixture of the two. The composition of product may be monitored as it flows through the isolated section or as it exits the section. Evacuation may be slowed or stopped based upon the composition.

System and method for evacuating pipeline product from an isolated section of pipeline

A closure [] for a cylindrical vessel includes at least one holding means [] configured to move the closure into a fully closed state, the holding means having a predetermined actuation force or torque to properly close the closure, the closure including one or both of the following failsafe failure detection features: a mechanical fuse [] having a predetermined load failure force below that of a load failure force of at least one component of the holding means and above that of a predetermined actuation force or torque to properly close the closure; or a block[] sized to at least partially overlap a pressure warning lock hole [] of the closure door when the closure is not in the fully closed state and to fully expose the pressure warning lock hole when the closure is in the fully closed state, thereby permitting insertion of a pressure warning lock [

Vessel closure device with fail safe failure detection means

A pigging device of this disclosure includes a wear indicator configured to visually indicate an amount of material loss of a pipe wall contacting surface. The material loss may be symmetrical or asymmetrical. The pipe wall contacting surface may be any shape suitable, including but not limited to spherical-shaped, cylindrical-shaped, cup-shaped, disc-shaped, conical-shaped, frusto-conical shaped, bowl-shaped, and bullet-shaped. In some embodiments, the pigging device is a pipeline pig such as but not limited to a spherical foam pig, cylindrical-shaped foam pig, or a bullet-shaped foam pig. In other embodiments, the pigging device is a component of a pipeline pig such as but not limited to a cup or disc arranged about a body of the pipeline pig. The pigging device may also be a pigging disc element. The pigging device may be made of any suitable material, including but not limited to an elastomer such as urethane.

Wear indicator for use with pipeline pig components having a pipe wall contacting surface

A re-settable pipeline gauging tool () of this disclosure includes a cylindrical tool body () that includes a deformable portion () with a plurality of sensors () located near or on an external circumferential surface () of the deformable portion. A sealed unit () contains a corresponding signal source (). Pipeline gauging relies upon the compressibility and elasticity inherent in the deformable portion as it encounters anomalies in pipeline geometry and moves between a first size and a second size, the signal strength of the source detected by the sensors changing as a result. The sensors may be arrayed in a circumferential band () about the deformable portion or along its length. In some embodiments, the sensors and source are magnetic or acoustic (e.g., transceivers or radar integrated chips). In other embodiments, the sensors and source are light or fiber optic.

Re-settable pipeline gauging tool with deformable body

A bidirectional bristle pig provides a means for collapsing or restraining the bristles so that the pig may be used in a reciprocating manner or, when the pig becomes stuck, the pig may be easily retrieved in a direction opposite that of the initial direction of travel. The bristle pig has at least one set of outwardly projecting cleaning wires or bristles located toward one end of the pig body and a sliding collar. The sliding collar moves between a first position and a second position to restrain the bristles at the desired leading end of the pig and forces the bristles downward and away from the inner wall surface of the pipeline. In the restrained state, the bristles no longer interfere with the movement of the pig in the desired direction. The sliding collar may move in response to pipeline pressure or may include a tether line.

Bidirectional bristle pig with sliding collar

A method for repairing and reinforcing a pipeline includes covering a defect in a pipeline section with a composite wrap, isolating the wrap from the ambient environment, and applying a compressive force on the wrap so that the pressure on the wrap is substantially equal to the pipeline pressure. Isolating the wrap involves the use of a housing having a cavity that substantially conforms to the shape of the wrapped section. The cavity may contain a pressurized gas or liquid. Because the pressure acting on the surface of the wrap is at least substantially equal to the pressure of the pipeline section, the wrap cures as if the pipeline is at zero pressure. Once the wrap has effectively cured, the compressive force may be relieved and the housing removed. The composite is now under load and is immediately sharing load with the pipeline.

Composite load transferring technique

A system and method for repairing and reinforcing a pipeline includes a pair of opposing composite wrap bands that are located on the external surface of the pipeline and positioned a predetermined horizontal distance from a defect area. A composite wrap is then applied over the bands to create a bridge that spans the bands and forms a cavity above the defect area. The bridge eliminates the need to clean the surface of the pipeline directly over the defect area. A second pair of bands located on the external surface of the bridge provides structural support. An actuator within the bridge monitors the pressure within the cavity and activates upon the presence of internal pressure, indicating a through-wall defect has occurred. A fitting may also be inserted into the bridge in order to pressurize the cavity and test the repair.

Composite wrap repair of internal defects

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Tulsa, OK, United States of America

Joseph Alan Morton