1887

Abstract

Summary

Nowadays active cluster drilling of deep production wells is carried out at the oil and gas fields of Nepsko- Botuobinskaya anteclise. During the drilling, fluid-loss zones are fixed. Numerous geohazards are associated with the magmatic rocks intrusions. The volume of drilling mud lost reaches thousands of cubic meters. The mapping of fluid-saturated zones in magmatic rocks can be performed with transient electromagnetic soundings in the near field zone (TEM). According to the geological basis the magmatic rocks intrusion into the carbonate rocks should be accompanied by saline water saturation of fractures in the traps and host rocks which leads to abnormally low electrical resistivity. TEM survey allows delineating zones of fluid-saturated fracturing and, when comparing the drilling data and the resistivity of rocks, predict possible risks of drilling wells, eventually correcting the position of well clusters.

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/content/papers/10.3997/2214-4609.201802045
2018-08-11
2024-03-29
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