METHOD FOR SUPPLYING SOLID REAGENT INTO THE WELL AND DEVICE REALIZING SAID METHOD Russian patent published in 2004 - IPC

FIELD: underground well equipment. SUBSTANCE: method includes measuring well debit and water amount in layer fluid, placing device with hard reagent in the well, solution of hard reagent by means of layer fluid supplied fro the layer and passing through a device comprising consecutively connected sections with hard reagent of one type or different types in each section. Sections are interconnected by means of openings in perforated base. Depending on the type of hard reagent placed in a section and previously measured well debit and water amount in layer fluid, ratio of sum of cross-section areas of radial passages located on 1 meter of section length to cross-section area of section is made 0.2-3. Device is placed in the well in perforation range either in hanged state or supported by pit-face. Device for supplying hard reagent into the well has a system of sections, each section comprising hard reagent of one or more types. Section for storing hard reagent has hollow cylindrical body with radial passages, hydraulically connected to the well. Sections are interconnected at ends by means of connecting assembly and are connected to each other through openings in perforated base. Radial passages in body of each section are made uniformly spaced. Depending on the type of hard reagent placed in a section and well debit and water amount in layer fluid, ratio of sum of cross-section areas of radial passages located on 1 meter of section length to cross-section area of section is made 0.2-3. Free end of device is covered by perforated end cap. EFFECT: stable proportional and efficient supply of hard reagents of different effects in low-debit and high debit-wells at different operation modes and with different viscidities of layer fluid. 3 cl, 6 dwg