STIMULATION OF LENTICULAR NATURAL GAS FORMATIONS

摘要

A method for stimulating production from wells (30) drilled into natural gas reservoirs (10) characterized by lenticular deposits (11). The reservoir thickness through which the wells (30) are drilled is divided into multi-stage zones (61) that are further divided into single-stage zones (62A, 62B). Each single-stage zone (62A, 62B) is perforated and then fractured. The fracturing is conducted in multiple stages (63) to sequentially fracture each of singlestage zones (62A, 62B) within a multi-stage zone (61), the fracturing stages (63) being separated by ball sealers (66). Well spacing may also be controlled to match fracture drainage and size of the lenticular deposits (11).