CASING CONVEYED PERFORATING PROCESS AND APPARATUS

摘要

A PROCESS AND APPARATUS FOR COMPLETING A SUBTERRANEAN WELL BORE IN AT LEAST ONE SUBTERRANEAN FORMATION.AT LEAST ONE PERFORATING GUN ASSEMBLY (20) IS POSITIONED ON THE OUTSIDE OF CASING (12) IN A SUBTERRANEAN WELL BORE (2). A SUITABLE SIGNAL, SUCH AS A HYDRAULIC, ELECTRIC OR WAVE SIGNAL, IS TRANSPORTED TO THE PERFORATING GUN ASSEMBLY (20) SO AS TO DETONATE ONE OR MORE EXPLOSIVE CHARGES (22, 26, 30) IN THE PERFORATING GUN ASSEMBLY WHICH ARE AIMED TOWARD THE CASING (12). AT LEAST ONE WALL IN THE CASING (12) IS PERFORATED THEREBY ESTABLISHING FLUID COMMUNICATION BETWEEN THE FORMATION (6) AND THE INTERIOR (13) OF THE CASING. A LOGGING TOOL (50) MAY ALSO BE POSITIONED EXTERIOR TO THE CASING (12) TO AID IN POSITIONING THE PERFORATING GUN ASSEMBLY (20) ADJACENT A SUBTERRANEAN FORMATION (6) OF INTEREST AND PRESSURE AND/OR TEMPERATURE GAUGES MAY ALSO BE PROVIDED ON THE EXTERIOR OF CASING TO MONITOR WELL BORE (2) AND/OR FORMATION (6) CONDITIONS. IN ONE EMBODIMENT, MULTIPLE PERFORATING GUN ASSEMBLIES (120A—E, 220A—C, 320, 320A) ARE LOCATED OUTSIDE CASING (112, 212, 310) AND JUXTAPOSED TO MULTIPLE SUBTERRANEAN FORMATIONS (106A, 106B, 206A, 206B) OF INTEREST. THEREAFTER, EACH PERFORATING GUN ASSEMBLY MAY BE SELECTIVELY FIRED TO PERFORATE THE CASING AND SELECT FORMATION. ZONE ISOLATION DEVICES (230A, 230B) MAY BE PROVIDED ON THE ÀUTSIDE OF THE CASING (212) TO PERMIT EACH FORMATION (206A, 206B) TO BE COMPLETED AND STIMULATED AND/OR TREATED INDEPENDENT OF THE OTHERS. IN THIS MANNER, MULTIPLE SUBTERRANEAN FORMATIONS MAY BE COMPLETED AND STIMULATED AND/OR TREATED MORE EFFICIENTLY AND COST EFFECTIVELY. (FIG 1)