FIELD: mining, particularly survey of boreholes or wells.
SUBSTANCE: method involves unloading movable salt zone of vertical rock pressure, which forms stresses in well walls; creating directional caverns in mechanically stable salt seams over potentially hazardous salt seams. Caverns have radii determined from dimensions of extreme area in well environment, where difference between main stresses exceeds salt yield stress.
EFFECT: prevention of well wall deformation caused by plastic salt flow.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF INCREASING STABILITY OF ROCK IN NEAR BOREHOLE ZONE | 2007 |
|
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| METHOD FOR PLASTIC SALT DEFORMATION INTERVAL DETERMINATION BEYOND CASING PIPE | 2004 |
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| CONSTRUCTION METHOD OF WELL SHAFT THROUGH UNSTABLE CLAY MINE ROCKS | 2012 |
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| METHOD OF BOREHOLE CONSOLIDATION IN PLASTIC BOCK | 0 |
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SU1731938A1 |
| PROCEDURE FOR CONSTRUCTION OF HORIZONTAL WELL IN DEVONIAN STRATA | 2009 |
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RU2421586C1 |
