INTEC has been responsible for the design, procurement and construction management of a considerable number of worldwide gas pipelines, including transmission pipelines, deepwater flowline applications and sour service.

1. Unocal Ranggas Pipeline Constructability Study
2. Angola LNG Gas Pipeline Project
3. Marco Polo Pipeline Project
4. Unocal Merah Besar
5. ExxonMobil HT/HP Pipeline Project
6. UNOCAL West Seno II - Flowlines and SCR
7. BP Mardi Gras Project
8. Canyon Express Pipeline Project
9. BP Horn Mountain Pipeline Project
10. Shell Bonga Project
11. Shell Bonga Gas Export Pipeline
12. Scarab / Saffron Pipeline Project
13. Gazprom Bluestream Pipeline Project
14. Shell Malampaya Pipeline Project
15. Conoco West Natuna Project

• Unocal Ranggas Pipeline Constructability Study INTEC scope was to review potential unconventional low cost pipeline installation alternatives to develop Ranngas gas field offshore East Kalimantan, Indonesia. This field is located in approximately 1,650-m water depth and the proposed pipeline could not be installed by any locally available lay vessel. The study estimated pipeline installation costs using existing pipelay vessels capable of installing the proposed pipeline, but all located in the Gulf of Mexico or West Africa, and compared those costs with the estimated costs of locally available pipe lay vessels, drill rigs and large supply boats modified to perform J-lay.
  
  
• Angola LNG Gas Pipeline Project - INTEC performed the Pre- FEED study that included routing, sizing and preliminary design of the gas pipelines from the offshore fields in shallow water and in deepwater to a shore LNG plant. Prepared cost estimates. Two options were investigated ? one with a gas storage facility to take excess gas that is produced and one without this facility.
  
  
• Marco Polo Pipeline Project - Gulf Terra contracted INTEC for the design of the Marco Polo oil and gas export pipelines and SCRs. The 72-mile long 18-/20-inch gas pipeline and SCR connect the TLP in 4,300 ft water depth to the Typhoon line in 1,700 ft water depth. The 37-mile long 12-/14-inch oil pipeline and SCR connect the TLP to the Allegheny line at 2,800 ft water. The scope of work included route selection, survey support, detailed, design of SCRs, detailed design of pipelines, permitting support, in-line tees and PLEMs design interface and support, design of the diverless tie-in jumper, installation support.
  
  
• Unocal Merah Besar - INTEC performed the Pre- FEED study that included routing, sizing and preliminary design of the export pipelines from the field including constructability and cost estimates. Three route options were studied . This field development is located in Makassar Strait, offshore Indonesia and will produce both oil and gas from a TLP in 2,000 ft water depth.
  
  
• ExxonMobil HT/HP Pipeline Project - INTEC performed detailed design for a pipeline transporting hot sour gas (200's). The design included evaluation of upheaval buckling potential and designing to prevent it by providing expansion devices to absorb the expansion. This included designing a HDD section under the ship channel using CRA clad pipe.
  
  
• UNOCAL West Seno II - Flowlines and SCR - INTEC performed detailed engineering of the West Seno II Pipelines and steel catenary risers (SCR) in Indonesia for UNOCAL Inc. This project included a 14-inch gas pipeline, 12-inch oil pipeline, and a 6-inch gas injection pipeline, all with SCRs at either end, from a TLP to an FPU in 1,000 m water depth, 4 km apart.
  
  
• BP Mardi Gras Project - BP is developing new oil and gas transportation systems to support the development of four new deepwater GOM fields. In May 2000, BP awarded a contract to INTEC to perform preliminary engineering services for the deepwater portion of the Mardi Gras Pipeline System. The scope of work includes design of the deepwater pipelines and steel catenary risers (SCRs). The large pipeline diameters required to achieve the production throughput volumes, coupled with 4,000 ft to 7,200 ft (1,200 to 1,950 m) water depths, place the Mardi Gras Pipeline Project among the most demanding deepwater pipeline projects in the world.
  
  
• Canyon Express Pipeline Project - This project is a first-of-a-kind industry initiative to jointly develop three gas fields in the Gulf of Mexico, operated by several companies, through a common production gathering system. INTEC responsibility included the complete subsea development with dual 12-inch pipelines transporting gas approximately 48 miles in water depths ranging from 7,250 ft to 1,130 ft (2,210 to 34 m).
  
  
• BP Horn Mountain Pipeline Project - INTEC scope included detailed design of a 41 mile (66 km) long gas export pipeline from a spar in 5,420 ft water depth to a fixed platform in 320 ft (91 m) water depth.
  
  
• Shell Bonga Project - INTEC performed detailed design for Stolt Offshore for a 16-inch diameter, 87 km long export gas pipeline in water depths to 1,100 m.
  
  
• Shell Bonga Gas Export Pipeline - INTEC performed preliminary engineering of the Bonga Gas Export Pipeline in West Africa for Shell Deepwater Development Systems, Inc. This project includes a 16-inch pipeline with a steel catenary riser from an FPSO in 1,000 m water depth to a riser platform in shallow water. At the riser platform, the Bonga Pipeline ties into the Shell Nigeria Offshore Gas Gathering System, a 30-inch diameter 270 km long gas transmission pipeline for which INTEC also performed conceptual engineering.
  
  
• Scarab / Saffron Pipeline Project - INTEC formed a consortium with Bechtel, designated as Deepwater Managing Contractor (DMC) on behalf of the Burullus Gas Project, to develop an eight well field offshore Egypt, with two export pipelines to a new onshore processing plant, to tie in to the Egyptian National Transmission System.
  
  
• Gazprom Bluestream Pipeline Project - This gas transportation system is to deliver processed gas from the gas grid in Southern Russia, across the Black Sea to Ankara Turkey. INTEC was responsible for the feasibility and detailed engineering of the pipeline system.
  
  
• Shell Malampaya Pipeline Project - Offshore pipelines transport natural gas from the Malampaya Field to Batangas Bay, South Luzon Island for conversion to electric power. Hydrocarbons produced from the Malampaya subsea wells in 850 m water depth flow through two 16-inch CRA clad pipelines to a shallow water platform in 40 m water depth. After separation, sales gas to be transported through a 500 km long 24-inch offshore pipeline to Batangas. INTEC performed pipeline conceptual engineering and final pipeline route selection.
  
  
• Conoco West Natuna Project - The West Natuna Gas Transportation System is subdivided into nine primary zones, two of which are for future developments. Sales gas from the Anoa Platform is transported via a 34 km long 24-inch pipeline to Subsea Tie-in North Manifold (SSTI-N) where it is co-mingled with gas from the Kakap Field (KFGC Platform) and transported to SSTI-N via a 49 km long 18-inch pipeline. The co-mingled gas is then transported from SSTI-N 90 km to Subsea Tie-in South (SSTI-S) via a 24-inch pipeline. At SSTI-S, gas from the Belida Field is manifolded via an 11 km long 16-inch west lateral pipeline from the Mobile Offshore Gas Pressurization Unit (MOGPU). From SSTI-S, sales gas is transported via a 30-inch trunkline a distance of approximately 472 km to a landfall at Pulau Sakra, Singapore. INTEC performed the preliminary engineering of the pipelines and manifolds, leading to the issue of EPC tender packages.