FIELD: oil and gas production industry. SUBSTANCE: to ensure higher oil extraction from producing bed according to method, performed are lowering and cementation of casing string in well of producing bed. Cementation of casing string is carried out initially in its lower part before roof of producing bed. Then recess and horizontal cracks are made in wall of well. Recess is created by streams of drilling mud. Speed of its ejection is at least 100 m/s. Then upper part of casing string is cemented. This is accompanied with filling recess and horizontal cracks with cement slurry. EFFECT: high efficiency. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF INJECTING INTO WELLS | 1994 |
|
RU2109128C1 |
| DEVICE FOR COMPLETION OF WELLS | 1995 |
|
RU2095545C1 |
| COUPLING FOR STEPPED CEMENTING CASING STRINGS | 1994 |
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RU2074311C1 |
| ARRANGEMENT FOR INSULATING STRATA | 1995 |
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| METHOD FOR SELECTIVE ISOLATION OF PRODUCTIVE RESERVOIR AT CEMENTATION OF PRODUCTION STRING | 1993 |
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| ISOLATION OF FORMATION FLUIDS IN WELL (VERSIONS) | 2010 |
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| METHOD OF SEGREGATION OF FORMATIONS IN WELL | 1999 |
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| METHOD OF SHUTOFF OF WATER INFLOW OVER CEMENTING ANNULAR SPACE IN OPERATION OF OIL AND GAS WELLS | 2000 |
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| METHOD OF WELL CEMENTING | 0 |
|
SU1659630A1 |
| METHOD FOR WELL CASING IN FLOW ROCKS | 1993 |
|
RU2066735C1 |
