METHOD OF WELL COMPLETION Russian patent published in 1997 - IPC

FIELD: oil and gas producing industry; applicable in cementing of casing strings. SUBSTANCE: method of well completion includes determination of the interval of water-bearing horizon prior to lowering of flow string; lowering of flow string. The flow string is cemented with the reduced thickness of cement stone behind the flow string against producing horizon. Solid concentric cement stone is formed against water-bearing horizon with its increased thickness behind the flow string. For this purpose, the diameter of flow string is increased against the producing horizon of reduced against the water-bearing horizon. EFFECT: higher efficiency of well completion with simultaneous provision of completion adaptability to operating conditions. 1 dwg