The Field Stress between Late Jurassic and Early Cretaceous in the Eastern Ordos Basin
Wan Yongping
Li Hailong
Li Yun
Song Zhijie
Li Yuanyuan
Qi Panwen
Abstract：The East Ordos basin is the hotpoint in recent years.In order to supply boundary conditions for field stress numerical simulation and fractures prediction in the eastern Ordos basin, this paper focus on the study of the specific parameters of the field stress between Late Jurassic and Early Cretaceous of Upper Paleozoic in eastern Ordos basin.Based on the retrieving of the syntectonicstructural deformation, calculatingof denudation thickness and the analyzing of the mudstone compaction curve, this paper got the triaxial stress state, the maximum horizontal principal stress direction, and the additive tectonic stress, the vertical earth stress, in-situ stress and differential stress.The results show that, the maximum and minimum principal stress were nearly horizontalwith the direction of the former point to SEE98°.The intermediate principal stress was nearly vertical.The triaxial stresses and the differential stress , which were get from Upper Paleozoic, located in 93.2 to 101.3MPa, 65.8 to 67.2MPa, 53.1 to 53.6MPa and 40.1 to 48.0MPa respectively.Those results providesignificant basis for field stress numerical simulation, fractures prediction as well as the optimization of favorable exploration zones in the fracturedreservoir.
Keywords：Ordos basinLate Jurassic-Early Cretaceousfield stressfracturegeodynamicstectonics
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 549-558 )