| 摘要 |
FIELD: oil and gas production. SUBSTANCE: invention relates to drilling and operating oil and gas wells and may be used for opening productive formations, for perforation works, preparing well for repair by means of killing with killing fluid and subsequently developing well including acid treatments, and also when performing special works associated with completion and repair of wells. Invention consists in that the process liquid containing ammoniated calcium nitrate solution is supplemented with 0.0133- 0.030 wt % of stabilizer comprising a mixture of complexions based on phosphonic acids and surfactants. Invention makes it possible, when performing repair works and completing well under elevated temperature (up to 130 C) condition and high flooding (up to 98%) of well produce, to preserve collection ability of productive formations, exclude fails and damage of well equipment caused by corrosion and salt deposition, increase successfulness of these operations, and lower usage of reagents. EFFECT: increased efficiency of well-repair works and reduced cost. |
