| abstract |
The invention discloses a low-density organic water-controlling proppant, which is prepared through the following process: performing high-temperature oxidation activation on the surface of a low-density organic proppant matrix to generate active groups on the surface, and then grafting a coating material through The activated low-density organic proppant is grafted on the surface to form a graft coating, and then the water-controlling coating material is grafted on the surface of the grafted coating to form a water-controlling coating to obtain the low-density organic water-controlling proppant . The present invention uses low-density organic proppant, its density is equivalent to water, and has excellent carrying performance, and can greatly improve the filling efficiency of wellbore and formation during well completion filling and fracturing operations; Hydrophobic modification is carried out, so that the low-density organic proppant has the function of water control and prolongs the life cycle of the oil well; the low-density organic water-controlling proppant of the present invention realizes the low density and water control of the proppant in the oil well completion or fracturing operation. double effect. |