ANTI-CHANNELING PACK-OFF PARTICLES USED IN A PRODUCTION SECTION OF AN OIL-GAS WELL, AND COMPLETION METHOD AND PRODUCTION METHOD USING SUCH PARTICLES

摘要

Anti-channeling pack-off particles used in a production section of an oil-gaswell, acompletion method, and a production method are provided. The anti-channelingpack-offparticles are macromolecule polymer particles having an average particlediameter of 0.05-1.0mm and a real density of 0.8-1.4 g/cm3. The particles are compactly filledinto a space of the oil-gaswell, which is required to be filled and packed off so that there is nochanneling path afterfilling, thus effectively pack-off or sectioning the oil-gas well intomultiple, relativelyindependent regions for production from the oil-as well, and thus improvingthe productionefficiency of the oil-gas well. Even if a channeling path occurs, a very smallflow of channelingfluid of a carrier medium will move some of the anti-channeling pack-offparticles in a directiontowards the channeling path and accumulate those particles until thechanneling path is filled,thereby achieving favorable effects of anti-channeling, packing-off, andsectional flow control.