| 摘要 |
oil producing industry, particularly, methods of increase of well productivity by intensification of oil flow. SUBSTANCE: method includes setting of packer in well bottom-hole zone with formation of bottom-hole chamber, producing of fractures in well bottom-hole by hydrofrac with the help of gases under pressure. In this case, packer is used with at least one channel connecting its end surfaces. For execution of hydrofrac supplied to bottom-hole zone under action of gases is lower part of well fluid column of bottom-hole chamber. Upper part of said fluid column is removed through said channel of packer to above-packer space of well. Flow of fluid is stopped through said channel to bottom-hole zone from above-packer space. After that, products of colmatage are washed out from pores and fractures of producing formation by flow of formation fluid under action of depression in bottom-hole chamber. Packer has a body with means for radial sealing, channel connecting end surface of the packer, check valve and hanger. The packer has at least one said channel when use is made of gas pressure generator in well including that of explosive substance. Check valve is mounted for passage through said packer channel of well fluid from bottom-hole chamber to above-packer space under action of gases of pressure generator and exclusion of motion of well fluid from above-packer space to bottom-hole chamber with shutting off said channel under action of well fluid column in above-packer space and depression in bottom-hole chamber. EFFECT: increased well productivity due to removal of colmatage products from bottom-hole zone and simplification of treatment technology. 5 cl, 4 dwg |
