FIELD: oil and gas production.
SUBSTANCE: within boundaries of deposit at each gravity monitoring point of control there are performed cyclic repeated examinations both on surface and in special drilled boreholes. Depth of boreholes should be as high, as thickness of layer of seasonal changes. Influence of a layer of seasonal changes is excluded by summing values of gravity measured on surface and in a borehole. Variations of summary values of gravity recorded between separate cycles of control are used for determination of gravitation effect conditioned by development of a deposit.
EFFECT: increased reliability and accuracy of control due to exclusion of influence of seasonal changes in upper par of drill core.
1 dwg
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