On results of on-line forecasting of the roof depth of the seam with abnormally high seam pressure at horizontal wells drilling

Authors: I.I. Ryabkov (Tyumen Branch of SurgutNIPIneft)
The problem of on-line forecasting of the roof of the seam with abnormally high seam pressure in the process of the borehole drilling is considered. The methods and techniques currently used by drilling enterprises are given. The capability of their use at drilling directional wells and wells with horizontal tailing-in is investigated. The results of an erroneous determination of the roof depth of the seam with abnormally high seam pressure during wells drilling are given. The basic methods for predicting the seam with abnormally high seam pressure while borehole drilling and the principle of binding to it are presented. The efficiency of the developed technique at the construction of horizontal wells on the seam with abnormally high seam pressure is shown.
The problem of on-line forecasting of the roof of the seam with abnormally high seam pressure in the process of the borehole drilling is considered. The methods and techniques currently used by drilling enterprises are given. The capability of their use at drilling directional wells and wells with horizontal tailing-in is investigated. The results of an erroneous determination of the roof depth of the seam with abnormally high seam pressure during wells drilling are given. The basic methods for predicting the seam with abnormally high seam pressure while borehole drilling and the principle of binding to it are presented. The efficiency of the developed technique at the construction of horizontal wells on the seam with abnormally high seam pressure is shown.


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