TDW Offshore Services (TDW), a leading supplier of pipeline services and equipment, has successfully completed a subsea pipeline pressure isolation operation in the Gulf of Mexico. Carried out at a depth of 370 ft (113 m) against 870 psig, this isolation enabled the safe and effective tie-in of a piggable wye to the Mississippi Canyon Gas Pipeline, a 30-inch natural gas line running between the West Delta 143 platform – a hub facility for deepwater oil and gas production – and the Venice Gas Plant in Louisiana.
The isolation project utilized two remote-controlled 30-inch SmartPlug® dual module pressure isolation tools to isolate 45 miles of pipeline.
“The SmartPlug® isolation tool is certified to ‘Safety Class High’ in accordance with OS-F101 for Submarine Pipeline Systems and is uniquely suited for use in connection with diving operations,” says Bjørn-Olav Gilje, project manager for TDW.
Each tool was composed of two plug modules and two pigging modules. One of the tools provided double block isolation on the high pressure side of the tie-in location. The first module on the second tool provided a hydraulic locked barrier of the high pressure side for the divers installing the wye. The second module on the second tool was used to perform a leak test to verify integrity of the new wye after installation.
Following launch, TDW technicians aboard dive support vessel Norman Commander used the remotely-operated SmartTrack™ tracking and pressure monitoring system to continuously monitor the locations of the SmartPlug® tools as they traveled to their subsea set destinations. The SmartTrack™ system uses two-way, through-wall, electromagnetic communication between a transponder and a receiver to track tool progress. Once the tools were set, the isolation period was approximately two and a half weeks.
“TDW worked with the client and their contractors over several months to ensure that associated risks were evaluated and mitigated,” Gilje adds. “This thorough up-front planning resulted in a successful tie-in operation for our client. Working together achieved a result that we are proud to have been part of.”
- WWCS, DOF Subsea Conduct Subsea Services in US Gulf Of Mexico (mb50.wordpress.com)
- Wright’s Well Control Services conducts rigless and riserless subsea plug & abandonment without running pipe to the surface in 1,250′ WD in the Gulf of Mexico (prnewswire.com)
- UK: Helix Well Ops Charters Skandi Constructor from DOF Subsea (mb50.wordpress.com)
T.D. Williamson, Inc. (TDW), a leading provider of pipeline equipment and services, has announced plans for the creation of a Global Pipeline Integrity Center in Salt Lake City, Utah.
Once complete, this world-class showcase facility will combine the TDW inline inspection engineering, manufacturing, operations, service center, and data analysis functions in one location. Situated close to the airport in the Salt Lake International Center, this new site will double the current TDW footprint in Salt Lake City and is indicative of the ongoing TDW investment in inline inspection.
“Our goal is to create a Global Pipeline Integrity Center that not only houses our inline inspection capabilities but that also leverages the total breadth of TDW technologies,” says Eric Rogers, Director of Pipeline Integrity Solutions for TDW.
In addition to serving as a global hub for inline inspection, the center will showcase TDW pigging products, including launchers and receivers, and pipeline services, such as cleaning and non-destructive testing.
“This new facility will also enable future growth, including the addition of a data center, customer and employee training facility, and pipeline test equipment for inline inspection tools,” Rogers adds.
TDW offers a wide range of inline inspection technologies. Advanced KALIPER® 360 technology is specifically engineered for use in newly constructed pipelines to provide geometry baseline information. TDW also offers high resolution deformation (DEF) tools for locating, sizing and determining orientation of diameter reductions or expansions. Magnetic flux leakage (MFL) tools provide detection and sizing of internal and external metal loss in liquid lines, and GMFL tools do the same for gas pipeline environments. SpirALL™ MFL (SMFL) technology is designed to detect longitudinal defects in a pipe body or longitudinal weld seam in conjunction with additional technologies available on TDW multiple dataset platforms. XYZ Mapping service provides the precise centerline profile of a pipeline in latitude, longitude and elevation. TDW is also conducting extensive research into Residual Field and Low Field Magnetism technologies for mechanical pipeline damage prioritization.
“Our technologies are constantly evolving and expanding,” says Rogers. “Our ability to combine technologies and generate multiple data sets in a single inspection makes defect discrimination more accurate and efficient than ever before. Our new facility will enable us to continue the proud tradition of TDW innovation.”
Plans call for the new TDW Global Pipeline Integrity Center to open its doors during the first half of 2012.
About T.D. Williamson, Inc.
A world leader in pipeline equipment and services, TDW delivers a comprehensive portfolio of safe integrity pipeline system solutions for onshore and offshore applications, including hot tapping and plugging, pipeline cleaning, integrity inspection, pigging and non-tethered plugging pig technology for any pressurized piping system, anywhere in the world.