Pipeline corrosion is the crucial problem within the oil and gas industry. Corroded pipeline offers great difficulties to the environment and the companies.
When oil or gas is moving through the pipeline, it also wears down the material. Coating and inspecting metal pipelines are the primary corrosion prevention measures. Besides, another possible strategy is shifting to alternative pipeline materials such as polyethylene. However, Conventional polyethylene pipelines experience difficulties in adverse temperatures.
Against this backdrop, Chevron has pioneered the production of Polyethylene with Raised Temperature Resistance (PE-RT). It was first implemented at a polyethylene pipe plant in Atyrau in 2003.
The Atyrau plant initiated a Europe-wide search for suppliers of suitable raw material for a water injection system upgrade, necessary for meeting water injection requirements. Besides, the plant had an order to build a 20 km water transportation pipeline. Keeping in mind the water’s toxicity and high temperature, the plant preferred the Dow Chemical Company’s PE-RT Type II technology for implementation.
PE-RT pipeline technology use enabled the modernisation of TCO’s water injection system. It improves the transportation of the highly corrosive water produced at the Tengiz oil field in the Atyrau region.
“There are many added benefits to using PE-RT. Its service life of 50 years is approximately 10 times that of traditional pipeline materials. It is also less costly than metal pipelines, which require cathodic protection, inhibitors and more regular inspection,” said the plant’s Commercial Manager Yevgeniy Legin.
“Our use of this technology at TCO and FGP-WPMP is yet another example of how we are using innovation to safely and effectively unlock opportunities,” he added.