FIELD: oil and gas production. SUBSTANCE: invention relates to foaming compositions of triple-phase foams for use as drilling muds under anomalously low formation pressures during primary exposition of productive oil and gas deposits or during major repairs of wells. Soft waterbased composition contains, wt %: foaming agent 0.8-1.8, modified starch 5.0- 7.0, sulfacell 0.18-0.3, industrial-grade chalk (seeding agent) 3.0-4.0, and additionally aluminum chloride 1.1-1.4 and soda ash 0.6-0.8. EFFECT: increased foam stability due to reduced filtration and improved structural characteristics of composition to form condensed acid-soluble colloids as solid phase of triple-phase foam. 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| GAS RELEASING FOAMING COMPOSITION FOR INITIAL EXPOSING OF PRODUCTIVE FORMATION AND WELL DEVELOPMENT | 2006 |
|
RU2327853C1 |
| HYDROGEL MUD AND METHOD OF ITS PRODUCING | 2000 |
|
RU2182586C2 |
| HYDROGEL DRILLING MUD | 2002 |
|
RU2222567C2 |
| HYDROGEL DRILLING MUD | 1997 |
|
RU2135542C1 |
| EMULSION FLUID | 2000 |
|
RU2196164C2 |
| PROCESS OF LIQUIDATION OF INTERSTRING GAS MANIFESTATIONS IN WELL | 1999 |
|
RU2166614C1 |
| OIL-WELL FOAM CEMENT COMPOSITION | 2000 |
|
RU2176308C2 |
| METHOD FOR PREPARATION OF BLOCKING FLUID FOR KILLING WELLS | 2022 |
|
RU2781988C1 |
| WELL-KILLING FOAMING COMPOSITION | 2001 |
|
RU2208036C2 |
| FOAMING WELL-KILLING COMPOSITION | 1998 |
|
RU2152973C2 |
