FIELD: mining.
SUBSTANCE: light-weight inhibiting drilling mud for formation drilling under conditions of abnormally low formation pressures contains the following, wt %: sodium carbonate 0.1; sodium hydrate 0.07; bentonite 2; biopolymer 0.2; polyanion cellulose 0.5; starch 2; potassium chloride 5; anion-active surface active substance 0.7; water is the rest.
EFFECT: improving efficiency of formation frilling under conditions of abnormally low formation pressures due to using gas-liquid mixture formed from the proposed composition, which has increased stability, high inhibiting properties with respect to clay particle swelling in productive formations, low values of filtration property and density for creation of minimum allowable repression on the formation, improved rheological characteristics.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| BLOCKING COMPOSITE FOR ISOLATION OF LOSS-CIRCULATION ZONES DURING WELL DRILLING AND WORKOVER OPERATION | 2012 |
|
RU2487909C1 |
| POLYMER-BASED DRILLING MUD FOR WELL CONSTRUCTION | 2015 |
|
RU2601635C1 |
| BIOPOLYMER DRILLING FLUID | 2022 |
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RU2804720C1 |
| HIGHLY INHIBITION DRILLING FLUID | 2021 |
|
RU2777003C1 |
| DRILL MUD FOR PRIMARY OPENING OF PRODUCTIVE FORMATION | 2018 |
|
RU2695201C1 |
| HEAT-RESISTANT BIOPOLYMER DRILLING MUD | 2018 |
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| METHOD FOR DRILLING AND PRIMARY OPENING OF PRODUCTIVE LAYERS | 2020 |
|
RU2753910C1 |
| APHRON-CONTAINING PROCESS FLUID | 2021 |
|
RU2776817C1 |
| CLAYLESS DRILLING MUD BASICALLY DESIGNED FOR BORING HORIZONTAL HOLES (VERSIONS) | 2001 |
|
RU2186819C1 |
| ALUM-GYPSUM-POTASSIUM DRILL MUD AND METHOD OF ITS PRODUCTION | 2012 |
|
RU2516400C1 |
