Unitized well testing apparatus for use in hostile environments

Claim 1

A modular well testing unit for use in hostile environments, comprising: a. a plurality of modular sections providing upon assembly a composite, unitized, enclosed structure for housing the components of the well testing unit, each modular section being self supporting and transportable; b. means for assembling the modular sections together to form the composite, unitized, enclosed structure; c. wall and insulation means for each of the units which are adapted to provide upon assembly of the modular sections an internal controlled environment surrounded by a substantially continuous external shell; d. internal access means between adjacent sections for allowing access between adjacent modular sections without traveling outside the external shell; e. production fluid intake means for intaking a production gas/fluid stream from an oil/gas well to be tested; f. crude oil outlet means for discharging oil from the assembled enclosure; g. a plurality of well testing fluid handling components comprising at least in part heat exchanger means, surge tanks, transfer pump and separator means for separating the production stream into components disposed respectively in said modular sections; and h. manifold means in each modular unit for forming fluid flow connections between the outlet means, the inlet means and the components, said manifold means including connection means for forming easily detachable direct fluid conveying connections between adjacent modular units so that the manifold means for all the modular units can be connected without traveling outside the external shell.