METHOD OF WELL CONSTRUCTION COMPLETION Russian patent published in 2000 - IPC

FIELD: well drilling, particularly, drilling-in of producing formations. SUBSTANCE: method includes drilling of wellbore in producing formation and sump in its bottom, accompanied by removing of drilling cuttings from well by washing with drilling mud, reaming of wellbore, lowering of pipe liner perforated before or after lowering, stimulation of formation product inflow into well. Wellbore is reamed without well washing. All cuttings of rock drilled in wellbore reaming are removed to sump. In realization of method, well walls are mudded, and colmatage layer is destroyed in final reaming of well. Simultaneously with wellbore reaming, liner is lowered which is forced by vibration or by fluctuation of liquid pressure in liner cavity through filter stock. After lowering of liner, hydraulic fracturing of formation is performed. Wedging solid fraction is used in the form of particles of filter stock found between liner and wellbore. EFFECT: higher productivity of formation in well operation. 10 cl, 6 dwg