| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to oil extracting industry and specifically to compositions for processing bottom-hole formation zone of facial-non-homogeneous low-permeability collectors of producing and injection wells. The composition for processing bottom-hole formation zone contains the following in wt %: halogen acid 5.0-80.0; caprolactam and/or oligomers thereof with molecular weight less than 8000 and/or salt of said oligomer-lactam compounds of general formula [NH2Çè+-(CO2)m-CO]n X-, where m=3-12; n=1-10; X- is Cl-, Br-, NO3Çè-, HSO4Çè-, or mixture thereof 0.5-35.0; water - the rest. The invention is developed in subclaims. ^ EFFECT: high permeability of bottom-hole formation zone, efficient development of oil reserves confined to low-permeability clogged up collectors owing to reduction of the amount of bound water and swelling capacity of clay, dispersion thereof, destruction and subsequent removal. ^ 3 cl, 2 tbl, 2 ex, 2 dwg |
