DEVICE FOR SAMPLING FLUID UNDER PRESSURE FOR GEOLOGICAL SITE DEVELOPMENT MONITORING

摘要

The invention is a device for sampling fluids under pressure from a well which comprises a chamber for retaining the fluid within a sample chamber (01). The chambers includes a first piston which allows or prevents fluid inflow into the lower part of the chamber. The first piston is displaced by means comprising an elastic element (20) disposed in a chamber filled with oil and connected to the piston by a rod (04). Sampled fluid transfer means allows control of the descent of a second piston (02) from the upper part to the lower part of the chamber so that the fluid remains at constant pressure in chamber during the transfer.

主权项

1. A device for sampling fluids under pressure from a well, comprising a sample chamber (01) defining an inner volume intended to receive the fluid, a body (10, 03, 08) above said sample chamber, circulation means for circulating the fluid in said chamber, means for keeping the fluid in said chamber and means for transferring the fluid out of said chamber, characterized in that:
said keeping means comprise a first piston (05) suited to allow or to prevent fluid inflow into the lower part of chamber (01), said first piston being displaced by means of an elastic element (20) arranged in a chamber filled with oil; said transfer means comprise means for controlling the descent of a second piston (02) from the upper part to the lower part of said chamber, so that said fluid remains at constant pressure in said chamber (01).