FIELD: oil and gas production.
SUBSTANCE: invention relates to multipurpose process fluids that can be used both individually or as base for fluids used in construction, repair, preservation, and abandonment of wells. Fluid of invention comprises aqueous-ammonia solution of calcium nitrate/ammonium nitrate mixture and organic stabilizer reagent, the latter being complex polymeric reagent, and further contains amino alcohol to neutralize acid gases. The following proportions of components are observed, wt %: calcium nitrate 16.0-45.0, ammonium nitrate 9.6-27.0, complex polymeric reagent 0.1-6.0, amino alcohol 0.1-5.0, and aqueous industrial-grade ammonia solution - the balance.
EFFECT: imparted resistance to integrated thermobaric effect, protected underground equipment against hydrogen sulfide corrosion and hydrogen embrittlement, and reduced preparation expenses.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| HYDROPHOBIC EMULSION | 2004 |
|
RU2263700C1 |
| FLUID FOR PUMPING DOWN AND MAINTENANCE OF OIL AND GAS WELLS | 0 |
|
SU1684308A1 |
| PROCESS LIQUID FOR LIQUIDATION (LONG-TERM SUSPENSION) OF OIL AND GAS WELLS (2 VARIANTS) | 2016 |
|
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RU2423405C1 |
| COMPOSITION FOR PREPARING SOLID PHASE-FREE PROCESS FLUIDS (DENSITY UP TO 1600 kg/m) DESIGNED FOR COMPLETING AND REPAIRING OIL AND GAS WELLS | 2005 |
|
RU2291181C1 |
| COMPOSITION FOR PERFORMANCE OF REPAIR AND ISOLATING OPERATIONS IN WELL | 1999 |
|
RU2167181C2 |
| HYDROGEN SULFIDE NEUTRALIZER AND A PROCESS FOR USING THE SAME | 2005 |
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| HYDROGEN SULFIDE AND/OR LIGHT-WEIGHT MERCAPTAN NEUTRALIZING AGENT AND METHOD OF NEUTRALIZER USAGE | 2005 |
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RU2302523C1 |
| COMPOSITION FOR NEUTRALIZING HYDROGEN SULFIDE, SUPPRESSING GROWTH OF SULFATE- REDUCING BACTERIA, AND INHIBITING CORROSION IN OIL-FIELD MEDIA | 2002 |
|
RU2228946C2 |
