METHOD FOR INVESTIGATION OF ABSORBING BEDS Russian patent published in 1999 - IPC

FIELD: oil and gas production industry. SUBSTANCE: method relates to investigation of hydrodynamic characteristics of bed carried out in process of drilling bore-holes and in preventing absorbing of oil and gas. According to method, measured is flow rate of fluid injected into well. Initial injection pressure at well head is preset at level of expected operating pressure before opening of absorbing bed. After that, measured is injection pressure with determined interval in washing at depths both in moving of drilling tool downwards at constant speed and without moving drilling tool downwards and determined is pressure differential at well head. At drilling of absorbing bed, performed are similar operations and determined is intensity of absorbing. Application of aforesaid method allows for reduction of operating expenses, of labour-intensity and of period of performing investigations. EFFECT: higher efficiency. 1 dwg