Velocity Limitation in Pipelines while Performing Welltest Operation, Quality Limitation Regarding Operational Usage of Relevant Equipment

Quality limitation which all equipment carries on, should be recognized and respected during the asset lifetime by any users and also those companies or individuals which expect to receive the asset`s services. This article emphasizes on Velocity Limitation in pipe lines while performing well test operation. As declared in cavitation and erosion definition in pipe lines, velocity phenomenon directly affects erosion and cavitation property of passing fluid inside pipe lines. As per American Petroleum Institute Recommended Practice 14E, two kinds of velocity are issuing inside alive pipe lines, one is erosion velocity (Ve) which indicates probable erosional property of passing fluid in term of ft. per second and one is actual velocity based on relevant passing gas rate calculation (Vg). Vg shall not exceed Ve. But these are not the only limitations. Manufacturers’ comments on manufactured assets and critical criteria of each fluid that is going to pass through pipe lines are unavoidable.This article addresses velocity limitation in pipe lines based on Mehran Engineering & Well Services Co. experience according to international standards and codes, assets manufacturer comments and Mehran standards and codes itself.

Keywords:

Gas Velocity , Erosion Velocity , Erosion , Well Test Operation , Piping System