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| Item title | Description |
|---|---|
| Directional Well Design | Sigra has experience and expertise in the analysis and design of directional wells. Directional wells are drilled at an angle to the vertical or horiz... |
| Geotechnical Engineering | SIGRA... ...manufactures and supplies equipment Data Loggers With radio connection Suitable for multiple transducers Vibra... |
| Stress and Permeability Changes with Fluid Production - The Stress Path | The effective stresses in a coal seam will change when fluid drainage occurs. Under the effects of drainage, the effective vertical stress will inc... |
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