Analysis and assessment of the degree of failures occurring risk at holing

Authors: T.V. Khismetov (GeotekhnoKIN NTTs ZAO), G.M. Efendiev (Institute of Geology NANA), K.A. Jafarov (Azerbaijan State Oil Academy), A.A. Abdirov (Atyrau Institute of oil and gas)

A statistical analysis of crashworthness at holing and risk estimation on this basis are carried out. Five classes of failure danger degree is established. An overall index of the failure effect is proposed. The dependence of the frequency of failures on this index is received. It is shown, that with increase in overall index of the failure effect failure frequency decreases, following the hyperbolic law. A measure of risk is proposed.