| 发明名称 |
METHOD FOR PREVENTION OF CASING GAS, OIL AND WATER INFLOWS IN OIL AND GAS WELLS |
| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: method consists in filling the casing space with a clay mud above a cement mixture. What is used is non-stabilised barite-weighted clay mud pumped during the process of cementing to create a barite block. The volume of the weighted clay mud is not less than that of the tubing-casing annulus above cement.EFFECT: more effective prevention of the casing gas, oil and water inflows in oil and gas wells.1 ex |
| 申请公布号 |
RU2493354(C2) |
申请公布日期 |
2013.09.20 |
| 申请号 |
RU20110152876 |
申请日期 |
2011.12.23 |
| 申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "AZIMUT" |
发明人 |
AKCHURIN KHAMZJA ISKHAKOVICH;KARPOV VALENTIN MIKHAJLOVICH;BURLAKOVA SVETLANA VASIL'EVNA;PROTASOV SERGEJ VIKTOROVICH;PERUN VLADIMIR STEPANOVICH |
| 分类号 |
E21B33/13;C09K8/48 |
主分类号 |
E21B33/13 |
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