COMPOUND FOR MAKING FILTER PREVENTING SAND CARRYING-OUT OF PRODUCING FORMATION IN OIL AND GAS PRODUCTION Russian patent published in 1995 - IPC

FIELD: oil gas producing industry. SUBSTANCE: compound for making filter contains, mas.%: urea-formaldehyde resin 40.12-57.26; aluminum sulfate 0.35-0.50; quartz sand 37.87-53.98; sawdust 1.07-3.19; fluoroagent T-80 (byproduct of dimethyl dioxans production 0.54-3.30; the balance, water. Mixed in vessel is urea-formaldehyde resin, fluoroagent T-80 and 20% aqueous solution of aluminum sulfate. Added to mixture are quartz sand and sawdust at the same time. Mixture is let stand for short period of time, then, additionally mixed and forced in perforation interval. Compound characteristics: higher mechanical properties that ensures preservation of initial permeability of filter in course of operation, and good ecological properties of compound. EFFECT: higher efficiency. 1 tbl