Laboratory studies of synthetic resin to be used for carrying out isolation work in wells
Problems of water and gas isolation in oil and gas wells are proposed to be solved by means of fast-setting grouting mixture (FSGM) based on urea-formaldehyde resin (UFDR), for formation temperatures from 20 up to 120 °C, by selecting hardeners and fillers, with hardening period from five minutes up to eight hours. Rheological properties of FSGM, required for field testing were determined during laboratory studies. It is stated that FSGM has good filterability, easily penetrating into a collector's pores, plugging ability and quite sufficient strength and ductility in case of necessity of the cement ring correction. The time of hardening is regulated in the range of temperatures from 20 to 120 °C. FSGM, possessing all the basic properties of the insulating material to be used for performing isolation work in wells, can be recommended for industrial implementation.