Journal of Petroleum Technology, Vol.56, No.10, 57-59, 2004
Rock-mechanics aspects of well productivity in marginal sandstone reservoirs
Rock mechanics may directly or indirectly affect productivity decline; however, remediation in sandstone reservoirs may be possible. Several mechanisms are linked to rock-mechanics aspects through local pore-pressure changes and induced deformations of the formation rock. Plugging may further induce rock mechanical failure around the well. Two principles of direct sand control are discussed [i.c., borehole reinforcement (expandable screens, gravel packing, propped fracturing, and chemical consolidation) and filtering (standalone screens, gravel packs, frac packs, and prepacked screens)] along with their effects on productivity and, therefore, reservoir depletion, scaling, sand production, filter-cake mobilization, and fines migration.