METHOD AND ASSEMBLY FOR PRODUCING OIL AND/OR GAS THROUGH A WELL TRAVERSING STACKED OIL AND/OR GAS BEARING EARTH LAYERS

摘要

An assembly for producing oil and/or gas through a well traversing stacke d oil and/or gas bearing earth layers (2-4) comprises a series of expandable packers (14) and integrated perforating gun and sandscreen assemblies (9-11 ) mounted on a production tubing (12) such that each integrated perforating gun and sandscreen assembly (9-11) is located adjacent an oil and/or gas bea ring earth layer (2-4) and at least one expandable packer (14) is located be tween a pair of adjacent oil and/or gas bearing earth layers (2-4), and at l east one inflow opening (22A-C) arranged in the wall of the production tubin g adjacent to each sandscreen assembly. The integrated perforating gun and s andscreen assemblies (9-11) are installed in a single run into the well (1) such that uncontrolled fluid and/or sand influx into the well before install ation of the sandscreens (23A-C) and expandable packers (14) is avoided.