ON TUBE-CUTTING CONSTRUCTION TECHNIQUE OF BRINE(SALT) WELLS
DU Wen-bin;No.312 Unit of Bureau of Geology and Mineral Exploration of Anhui Province;
Brine(salt) well repairing can remove downhole breakdowns to recover production capacity, achieve designed well production and make use of the underground precious resources to the highest degree. Technical tube cutting is to cut off the hanging technical tube according to requirement making it fall into salt cavity,thus achieving second gradient mining in brine(salt) well, for butted wells, it can eliminate negative effect of sediments in the cavity on plumb shaft to realize water inflow through oblique well and brine outflow through shaft and to best meet normal brine mining and transport mode. Based on many years of construction experiences,this paper introduced some key techniques and experiences in brine tube cutting and repairing construction.