Consolidating proppant and controlling fines in wells

摘要

Proppant particles (PP) are placed in fractures by pumping specific fluid. Liquid hardenable resin composition (HRC) is coated on dry PP to obtain HRC coated PP. Obtained particles are suspended in pumped fluid. HRC is allowed to harden on coated PP and PP are allowed to weakly consolidate into permeable proppant pack(s) in the consolidation of proppant and control of fines in subterranean fracture(s). A gelled liquid fracturing fluid is pumped into subterranean formation to form fracture(s) and to place proppant particles in the fractures. A liquid hardenable resin component comprising a hardenable resin is mixed with a liquid hardening agent component comprising a hardening resin to obtain a liquid hardenable resin composition, which remains tacky even after hardening. The composition is coated onto the dry proppant particles to obtain hardenable resin composition coated proppant particles. The obtained coated proppant particles are mixed and suspended in the fracturing fluid until the particles are placed in fractures. The hardenable resin composition is allowed to harden on the coated proppant particles and the proppant particles are allowed to weakly consolidate into permeable proppant pack(s), while to remain tacky so that fine solid formation particles carried to the permeable proppant packs by produced formation fluids stick to the permeable proppant packs in the consolidation of proppant and control of fines in subterranean fracture(s).