Abstract: Abstract：The northeastern zone of Sichuan is one of the regions that are rich in oil and gas resources discovered in China. The
geological structures in this area are extremely complicated，80 percent of which are high-steep conformation. The complicated
structure conditions have a great challenge for oil and gas exploration and development. Especially，the unclearly understand-
ing of the magnitude，direction and transverse distribution law of crustal stress brings great difficulty in well construction. The
paper，by making full use of the continuity，economy and resolution of logging data，and applying statistic methods and com-
puter comprehensive mapping technology，calculates and studies the rock mechanic parameters and crustal stress precisely，
primarily sets up the discrete analysis model of vertical stress and precise solution formula of horizontal stress. Meanwhile，
the paper puts forward the concept and value range of average crustal stress，calculates and tests it in depth according to actual
geological condition of the work area. The results obtained greatly improve the understanding of transverse distribution law
and calculation accuracy of crustal stress in high-steep conformation of northeastern Sichuan，and，provides reference for the
calculation research on other same structures.

Key words: Key words：high-steep conformation, crustal stress, calculation model, rock mechanics parameters, North-eastern Sichuan