| 摘要 |
<p>An assembly for transient and continuous testing of an open portion of a well bore, said assembly being arranged in a lower part of a drill string, and is comprising: - a minimum of two packers fixed at the outside of the drill string, said packers being expandable for isolating a reservoir interval; - a down-hole pump for pumping formation fluid from said reservoir interval; - a sample chamber; - sensors for measuring fluid properties; - a closing valve for closing the fluid flow from said reservoir interval, distinguished in that said assembly further is comprising: - sensors and telemetry for measuring and real-time transmission of the flow rate, pressure and temperature of the fluid flow from said reservoir interval, from said down-hole pump, in the drill string and in an annulus above the packers, - a mud driven turbine or electric cable for energy supply to said down-hole pump, and - a circulation unit for mud circulation from a drill pipe to said annulus above the packers and feeding formation fluid from said down-hole pump to said annulus, said circulation unit, independent of the circulation rate for mud to said annulus, can feed formation fluid from said reservoir interval into said annulus, so that a well at any time can be kept in over balance and so that the mud in said annulus at any time can solve the formation fluid from said reservoir interval.</p> |
