FIELD: oil-and-gas industry.
SUBSTANCE: includes pumping cement composition and modified cement composition, at that pump polymer composition before cement composition, and pump modified cement composition at final cementing stage, taking into account hole clearance filling, in reservoir location interval, with 10-20 m overlapping.
EFFECT: due to change of a clay cover structure mechanical properties and formation of a screen, made of polymer material, in near well borehole part, quality of cementing increases and the reservoir collector properties stays the same; reduce of cementing process time due to no need in additional clay cover cleaning operation.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING WELLS TO CEMENTATION | 1999 |
|
RU2137906C1 |
| METHOD FOR WELL CASING WITH RESERVOIR PROPERTIES RETENTION IN PRODUCTIVE BED | 2003 |
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| WELL REPAIR METHOD | 2011 |
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| PROCEDURE FOR RECOVERY OF TIGHTNESS IN FLOW STRING AND ELIMINATION OF BEHIND-CASING FLOWS | 2013 |
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| METHOD OF BOTTOMHOLE SUPPORT IN SAND WELLS | 2009 |
|
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| METHOD OF CEMENTING CASING STRINGS | 0 |
|
SU1707186A1 |
| METHOD OF PREPARATION FOR CEMENTING OF WELLS DRILLED USING INVERT-EMULSION DRILLING MUD | 2010 |
|
RU2452849C1 |
| METHOD FOR ISOLATING BEDS DURING FASTENING OF OPERATION COLUMN | 2005 |
|
RU2295626C2 |
| METHOD FOR CEMENTATION OF WELLS | 1996 |
|
RU2123576C1 |
| METHOD FOR STRING CEMENTING IN WELL USING CEMENT MORTAR WITH EROSION PROPERTIES | 2009 |
|
RU2398095C1 |
