METHOD OF DETERMINING WATERPROOFING PROPERTIES OF COMPOSITIONS FOR WATERPROOFING THE PRODUCING WELLS Russian patent published in 2002 - IPC

FIELD: oil and gas producing industry. SUBSTANCE: method includes saturation of reservoir rock specimen with formation water under vacuum; centrifuging and weighing of specimen after each regime of rotor rotation; construction of initial gistogram of pore distribution by sizes; installation of specime into core holder of plant modeling the formation conditions; determination of water permeability; filling of pore space with waterproofing composition; removal of specimen from core holder; finish saturation of specimen with formation water under vacuum; weighing; centrifuging under the same regimes with subsequent weighing after each regime; calculation of pore radii; construction of diagram of pore distribution by sizes; comparison of data of initial and finish diagrams of pore distribution by sizes; calculation of pore quantity filled with waterproofing composition. EFFECT: determination of waterproofing composition distribution in pore spaces of reservoir rock specimen. 1 dwg, 1 tbl