FIELD: mining engineering, oil industry.
SUBSTANCE: invention refers to oil and gas industry, specifically to formations testers. Tester comprises of elongated case, support blade moving forward from case surface and carrying probe to make canal between case inner surface and formation, sealing washer attached to probe, anchor mechanism for case mounting. Case includes eccentric area. Support blade is installed in such a way that it is possible to keep specified clearance between case and well bore side as case is installed on level in well bore. As formation pressure-testing operation is performed case is lowered into well bore up to level of measurements, support blade and anchor mechanism are moving forward, sealing washer and probe are pressed down, and formation pressure is measured. Risk of device blocking is reduced.
EFFECT: production of formation testers ensuring process optimization and reliability improvement.
18 cl, 2 dwg
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