Deformation of ductile cuttings from sandstone in compaction process and experimental study of influence on porosity |
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| Authors: | GAO Bo MA Rui LIU Li LIU Na WANG Yang |
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| Institution: | College of Earth Sciences, Jilin University, Changchun 130061, China |
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| Abstract: | Deformation of ductile cuttings from sandstone in the mechanical compaction process was designed through the "experimental system of triaxial rock deformation",and the influence on porosity was studied by looking into the deformation characteristics of ductile cuttings. The design indexes are as follows: simulated depth 0- 4 000 m,interval depth 500 m,and pressure range 0- 120 MPa at interval of 1. 5 MPa. The experimental results show that the porosity decreases as buried depth increases,indicating a negative relationship between them. The amount of compression was mainly obtained by porosity reduction and cutting deformation. Deformation of ductile cuttings is mainly ductile deformation; and deformation of crystal fragments is mainly expressed as brittle fracture,resulting in decrease of particle size. The research is of certain value for the exploration and development of oil and gas. |
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| Keywords: | ductile cuttings sandstone compaction process porosity deformation characteristics |
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