FIELD: oil and gas well drilling, particularly to casing pipe cementing.
SUBSTANCE: displacement liquid comprises plugging Portland cement in amount of 30-45% by weight, sodium tripoliphosphate in amount of 0.1 - 1.0% by weight, neonol in amount of 0.05-0.1% by weight, silica-alumina microspheres in amount of 5-10% by weight and water in amount of 43.6-64.65% by weight.
EFFECT: increased cement stone adhesion to casing pipe and well wall surface due to increased flushing, carrying-out and mudding ability of the displacement liquid.
1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| BUFFER LIQUID | 2022 |
|
RU2785729C1 |
| EROSION BUFFER MATERIAL | 2023 |
|
RU2822526C1 |
| METHOD OF PREPARATION OF LIGHT-WEIGHT GROUTING MORTAR | 2002 |
|
RU2215124C1 |
| LIGHT-WEIGHT PLUGGING MORTAR | 2000 |
|
RU2196876C2 |
| LIGHT-WEIGHT GASPROOF PLUGGING MATERIAL FOR CEMENTING OVER-PRODUCING INTERVALS (VERSIONS) | 2012 |
|
RU2497861C1 |
| LIGHT-WEIGHT OIL-WELL CEMENT MIX (VARIANTS) | 2003 |
|
RU2256774C2 |
| METHOD OF PREPARATION OF LIGHT GROUTING MORTAR OF DENSITY 1450-1500 kg/m | 2008 |
|
RU2385894C1 |
| COMPOSITION FOR PREPARING DETERGENT FLUSH FLUID | 2009 |
|
RU2411277C1 |
| METHOD OF PREPARATION OF GROUTING COMPOSITION | 2001 |
|
RU2186942C1 |
| FLUSH FLUID | 2015 |
|
RU2592308C1 |
