Бурение грунтовых зондов, установка энергетических колодцев

The selection of casing setting depth above surface casing is usually determined by drilling problems and the protection of water aquifers at shallow depths. Severe lost circulation zones are often encountered in the interval between 100 and 1.000 ft and are overcome by covering the weak formations with conductor pipes. Other factors that may affect the setting depth of the conductor pipe are the presence of unconsolidated formations and gas traps at shallow depths.

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