T.D Williamson Pipeline Maintenance

T.D. Williamson (TDW) is one of the world’s most recognised names in pipeline equipment and services for onshore and offshore applications. TDW’s core business is to provide customers with products and services for effective and efficient pipeline maintenance and construction. TDW offers hot tapping and plugging, pressure isolation, pig-tracking and general repair and maintenance services in the following scenarios:

  • Installation, repair or replacement of valves
  • Replacement or repair of risers
  • Bypass or decommissioning of platforms
  • Tie-in of new pipelines or platforms
  • Midline repair of pipelines
  • Replacement or relocation of pipe sections
  • Protection of assets during heavy lift and other construction activities
  • Anti-flooding protection of new pipelines during pipelaying

TDW’s world-class engineering capabilities have resulted in several innovative products and services, including the tetherless, remote-controlled SmartPlug® pipeline pressure isolation tool, the SmartTrack™ system, the diverless Subsea 1200 RC hot-tapping machine and the SmartLay™ anti-flooding tool.

Pipeline hot-tapping and plugging

TDW tapping and plugging equipment is available for a wide range of pipelines and applications. Hot-tapping equipment is available for work on lines from 0.25in to 60in and at pressures of up to 99bar. STOPPLE® plugging machines have been engineered for lines between 1.25in and 56in at pressures of up to 69bar.

TDW has performed tapping and line plugging services for offshore installations and subsea projects worldwide. Standard applications include the Subsea 1000 tapping service for taps from 6in to 16in at pressures up to 152bar and at depths down to 305m.

The innovative topside-driven diverless Subsea 1200RC hot-tapping machine can be operated at depths down to 3,000m, allowing access to remote subsea pipelines where divers cannot operate. TDW has recently developed a remote-controlled Subsea clamp installation tool (CIT) for the installation of subsea clamps and related products. The CIT (comprising a TDW-supplied control skid and installation frame with running tools) can be used with any third-party work-class ROV. When used in conjunction with the CIT, the Subsea 1200RC can provide a complete solution for diverless subsea hot-tapping.

Pipeline pressure isolation services

By using TDW’s proprietary tetherless, remote-controlled, bidirectionally piggable SmartPlug tool, any onshore or offshore section of a pipeline can be isolated at (or close to) operating pressure, enabling pipeline repair or maintenance works to be carried out.
This means that any assets connected downstream can continue production while the repair activities proceed. This minimises pipeline downtime and significantly reduces the environmental and economic costs associated with the otherwise inevitable pipeline depressurisation. A special configuration of the SmartPlug tool allows hydrotesting / leak testing of the repaired pipeline to be performed with the same tool.

TDW has performed more than 240 isolation jobs to date with SmartPlug tools of various configurations and sizes (8in to 48in) at isolation pressures ranging typically from 10bar to 250bar. Under certain conditions and with tools of special configurations, this range has been significantly extended from 0bar to 375bar.

The SmartPlug tool is custom-designed for each project with the exact configuration being determined on a case-to-case basis. This inherent capability of the tool to be customised for each job offers extremely flexible solutions. All tools are covered by type approval from DNV GL and isolations are carried out under the auspices of DNV GL certification to ensure compliance with all technical standards and requirements.

TDW also offers custom-designed high-friction pigs for pipeline isolation with low delta pressures or for batching / separation tasks with special safety requirements. Typical tasks include separating different pipeline contents and pipeline repair and modification projects. Due to their extremely efficient sealing capabilities, high-friction pigs can also be used for certain cleaning and dewatering applications.

Pipeline pig-tracking system

TDW’s SmartTrack system is the communications and tracking system used with the SmartPlug tool. The SmartTrack system can also be used as a freestanding application with any inline tool, such as pigs and inspection tools, for accurate tool tracking and localisation. The system offers two-way, through-wall communication based on extremely low frequency (ELF) signal technology.

The SmartTrack system has been designed with offshore subsea operations in mind, offering several advantages, such as a long battery life and the ability to track at high pigging speeds and in thick-walled or buried pipelines. Tracking can be performed by a field operator, ROV, diver, subsea antenna or a permanent receiver anywhere along the pipeline.

When running multiple tools / pigs, the SmartTrack system can immediately identify the pig that has passed. High-friction pigs fitted with SmartTrack transponders allow accurate pig-tracking, positioning, identification and continual pressure monitoring, providing an additional degree of safety.

For more information on TDW products and services, visit our website or leave an enquiry using the form below.

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Press Release

Pipeline Isolation for ExxonMobil in Italy Delivers Enhanced Safety and Reduced Costs

T.D. Williamson (TDW), a leading supplier of pipeline services and equipment, has announced that it has performed its first STOPPLE® train intervention operation on a pipeline in Europe. The operation took place in Italy at the SARPOM Raffineria, which is owned by ExxonMobil and ERG Petroli.

Address
T.D. Williamson

Fabrikkveien 15

PO Box 8011

Stavanger

4068

Norway

+47 51 44 32 40 +47 51 44 32 41 www.tdwilliamson.com

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Press Release

30 May 2010

TDW Offshore Services has announced that the final component of its SmartTrack remote tracking and pressure-monitoring system has been awarded ATEX certification for use in zone 1 hazardous locations by Det Norske Veritas (DNV) in Norway. Communicating through pipelines

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11 February 2010

T.D. Williamson (TDW), a trusted name in the pipeline industry since 1920, is pleased to announce that Bill Fisher has been promoted to general counsel, corporate secretary and chief compliance officer. In this new capacity, Fisher serves as a member of the company's executive managemen

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19 January 2010

T.D. Williamson (TDW), a leading supplier of pipeline services and equipment, has announced that it has performed its first STOPPLE® train intervention operation on a pipeline in Europe. The operation took place in Italy at the SARPOM Raffineria, which is owned by ExxonMobil and ERG Petroli.

Read more
28 March 2008

Remote-controlled SmartPlug Key to Success TDW Offshore Services announced that two new gas production platforms on Shamrock and Caravel fields in the North Sea were tied in to an existing pipeline system on Corvette field last month. TDW Offshore Services provided SmartPlug services en

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Regional Offices

TDW Offshore Services, Asia Pacific & Australia

4 Tech Park Crescent, 3rd Floor

Tuas

Singapore 638128

Other

Singapore

+65 63648520 +65 63648521
TDW Offshore Services AS

12 Albyn Terrace

Aberdeen

AB10 1YP

Other

United Kingdom

+44 1224 627666 +44 1224 627143
TDW c/o GASOS

Bin Hamoodah Tower

P.O.Box 203

Abu Dhabi

SH.Khalifa Street

Other

United Arab Emirates

+971 2 627 66 00 +971 2 627 61 50
T.D. Williamson de Mexico S.A. de C.V.

Esquina Emilio Cardenas

Fraccionamiento Industrial Tlalnepantla

Estado de Mexico

Municipio Tlalnepantla de Juar

CP 54000

Other

Mexico

Roberto Fulton +52 55 5565 1622 +52 55 5565 1685
TDW Offshore Services L.L.C

4220 World Houston Parkway, Suite 100

Houston

Texas 77032

Other

United States of America

+1 832 448 7200 +1 832 448 7240
Tulsa Service Center

6747 S. 65th W. Ave.

Tulsa, OK 74131

Other

United States of America

+1 918 447 5530 +1 918 447 5550
T.D. Williamson S.A.

Rue du Travail 6

B-1400 Nivelles

Other

Belgium

+32 67 28 36 11 +32 67 28 36 01
T.D. Williamson

Fabrikkveien 15

PO Box 8011

Stavanger

4068

Norway

+47 51 44 32 40 +47 51 44 32 41 www.tdwilliamson.com
T. D. WILLIAMSON DO BRASIL LTDA

Estrada do Tindiba 1591

Taquara

CEP: 22740-361

Rio de Janeiro - RJ

Other

Brazil

+55 21 2125 0100 +55 21 2125 0101
TDW Services Latinoamericana, C.A.

Centro Comercial Marisandra, Galpón No.13

Sector Santo Domingo, Vía Naricual

Estado Anzoategui

Barcelona

Other

Venezuela

+58 281 267 6414

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