Crc-evans Pipeline International, Inc.

Shankar T Rajagopalan

Siddharth Mallick

Brian L Kirk

Jose C Bouche

Jason W Curbo

Jonathan B Kettelkamp

Lawrence Sniderman

Shailesh Radhakrishnan

Sridhar Madala

Mark Clemmons

Jonathon B Kettelkamp

A welded pipe assembly includes a first and a second metal pipes, and a welded joint or welded material connecting the first pipe with the second pipe. The first and second metal pipes each have a length of at least 30' and an exterior diameter of less than 24&#x2033;. The weld material includes a plurality of weld pass layers including a first internal pass layer and a second internal pass layer disposed on top of the first internal pass layer. The second internal pass layer is positioned closer to an interior longitudinal axis of the welded first and second pipes than the first internal pass layer. The welded joint includes a first internal bevel formed in the first metal pipe and a second internal bevel formed in the second metal pipe. The first internal pass layer is disposed in a region defined by the first and the second internal bevels.

Internally welded pipes

A system for welding two pipes includes a first pipe clamp, a second pipe clamp, a weld torch, an inspection detector, a motor, one or more processors, and a grinder. The weld torch is configured to create a weld joint between the pipes at an interface region between the pipes. The inspection detector is configured to emit an inspection beam of radiation. The motor is operatively associated with the inspection detector to direct the inspection beam of radiation along the weld joint between the pipes. The one or more processors are operatively associated with the inspection detector to determine a profile of the weld joint between the pipes. The grinder is configured to grind at least a portion of the weld joint between the pipes based on the profile of the weld joint between the pipes.

Systems and methods for use in welding pipe segments of a pipeline

The present application relates to a field system and methods that can be deployed in the application of pipe welding. The field system provides many embodiments relating to pipe welding systems and methods, that can be used in combination with one another, or individually. Such welding systems and methods, include, for example, internal welding systems and methods, tie-in welding system and methods, pipe inspection systems and methods, pipe handling systems and methods, internal pipe cooling systems and methods, non-destructive testing systems and methods, as well as remote interface and database systems and methods (uLog), to name a few. The application further relates to welded pipes that result from some or all of such processes.

A welding system includes a welding station having a weld station computer and a weld system in communication with the weld station computer. The weld system includes a supply of weld material, a welding device, and a weld supply motor assembly that moves the weld material to the welder device. The system further includes a weighting device operatively connected with the weld station computer to measure a weight of the supply of weld material and to communicate the weight of the supply of weld material to the weld station computer; and a sensor operatively connected with the weld supply motor assembly and the weld station computer so as to communicate the speed of the weld supply motor assembly to the weld station computer. The weld station computer is operatively connected to the weld supply motor assembly to control the speed of the motor assembly based on the weight data.

System for welding

A weld system for welding two pipes includes a frame, a plurality of rollers, a drive motor, a brake system, an inspection detector, a weld torch, one or more battery cells and one or more processors. The frame is configured to be placed within the pipes. The plurality of rollers is configured to rotatably support the frame. The drive motor drives the rollers to move the frame within the pipes. The brake system secures the frame from movement at a desired location within the pipes. The weld torch, the inspection detector and the one or more battery cells are carried by the frame. The inspection detector is configured to detect a characteristic of an interface region between the pipes. The one or more battery cells are configured to power the drive motor, the inspection detector and the weld torch.

Self-powered welding systems and methods

A field system for welding two pipes includes a first pipe engagement structure, a second pipe engagement structure, one or more weld torches, a motor and one or more processors. The one or more weld torches are configured to be positioned within the pipes to create an internal weld at an interface region between the pipes. The motor is operatively associated with the one or more weld torches to rotate the one or more weld torch along the interface region between the pipes. The one or more processors control the motor and the one or more weld torches. The one or more processors operate the motor and the one or more weld torches to generate a complete circumferential weld along the interface region by rotating the one or more weld torches along the interface region in a single rotational direction until the complete circumferential weld is completed.

Rotating welding system and methods

The present invention is directed to a system for welding together segments of a pipeline. The system includes an external alignment mechanism for externally supporting and manipulating the orientation of pipe segments in order to align relative segments. The system also includes an internal welding mechanism for applying a weld to an interior face joint of the two abutted pipe segments. The internal welding mechanism including a torch for applying a weld, a laser for tracking the weld profile and guiding an articulating head of the torch, and a camera for visually inspecting the weld after the weld is applied.

Laser controlled internal welding machine for a pipeline

Apparatus, systems, processes, control systems, means and methods for near-weld gas purging and welding. A focused circumferential near-weld purge gas delivery system for pipeline welding. A near-weld purge rig which has a near-weld purge gas channel and which achieves a low oxygen concentration proximate to a pipe gap for welding. The gas used for purging is also directed against an interior surface of the pipe to be welded. The directed gas cools the pipe to a desired temperature.

Near-weld purge gas delivery system

An internal heat exchanger (IHEX) for pipeline welding includes a drive system configured to move the IHEX into a position within at least one pipe section near a weld joint location with another pipe section. The IHEX further includes a cooling section including cooling structure configured to selectively cool one or more interior surface portions of the at least one pipe section, and a controller in communication with the cooling structure and configured to activate the cooling section when the IHEX is at the position within the at least one pipe section.

Internal pipeline cooler

A method and apparatus is provided for automated control and positioning of a mandrel within a pipe during bending operations. Position detection is accomplished by means of a low frequency electromagnetic signal transmission from a coil placed in close proximity parallel to the pipe outer surface. This signal is detected by a pair of orthogonal receiving coils mounted on the mandrel in close proximity to the pipe inner surface. The phases of the received signals with respect to the transmitted signal and the ratio of the amplitudes of the two received signals is used to estimate the relative position of the transmitter and the receivers. Control of the mandrel along with transmission of reference phase information is accomplished via a high frequency direct sequence spread spectrum radio link between a computer console outside the pipe mounted on the bender and a computer unit mounted inside the pipe on the mandrel.

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Cypress, TX, United States of America

Shankar T Rajagopalan