HYDROSTATIC AND HYDRO-TESTING IN THE OIL AND GAS FIELD

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Introduction of Book :

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Hydro-testing is a vast applied method of using nonflammable and nontoxic fluid medium such as fresh water or nitrogen (N2) to conduct mechanical integrity test (MIT) on casing string, production tubing, pipelines, and production vessels in the oil and gas industry.All the production vessels such as the horizontal separator, the spherical fluid separator, and the flow lines must be hydro-tested. Liquid fuel tanks, nitrogen transport vessels, acid-carrying tanks, and all toxic transporting vessels must be hydro-tested for safety and durability before they are put to service.

The hydrostatic testing is a common technique of pressure testing the oil, gas tubing, and casing strings for the purpose of quality and mechanical integrity. 

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Fresh water will be used to conduct hydro-testing on the tubing or the production equipment. Trapped air or gas will be purged or displaced by water, and required pressure will be applied to achieve testing results.Application of dye water is a preferred method of hydrostatic testing on surface equipment such as flow line or production vessels.

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