Research on Rock Mechanics Characteristics of Mud Sandstone NanTun Formation of HaiLaEr Oilfield
Year: 2014
Type: article
Abstract: Hailar oilfield Nantun Formation is a set of lacustrine sedimentation, the sedimentation dominated by gravity flow,the rock contains a lot of argillaceous components. This paper analyzes the content of mud in mud sandstone in Nantun Formation by means of X-ray diffractometer, the rock mechanics parameters were measured.The results show that mud content increases with the decrease of the young's modulus, mud content increases with the increase of the Poisson's ratio; at the same time, with the increasing of the shale content, the compressive strength of rock reduce, and the tensile strength showed increasing trend; different clay contents of mud sand rock stress strain relationship is not the same, when the clay content ≤20%, rock stress strain is elastic constitutive relation, the shale content 20%-30%, the stress-strain relationship is approximate to the ideal elastic-plastic, shale content ≥30%, stress strain relation of rock strain hardening and softening of two parts including plastic deformation. Fault mud sandstone first with increasing clay content decreases, when the rock is elastic plasticity, fracture little overall change.
Source: Advanced materials research
Institution: Northeast Petroleum University
Language: English
Topic: Rock Mechanics and Modeling
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W1994482710