In order to solve the cost and resource problems of cement-stabilized gravel base in pre-drilling projects in Si-chuan and Chongqing areas,it has become a difficult problem in drilling engineering to make resource utilization of oil-based cuttings,the main pollutant.From the perspective of pre-drilling engineering application of a well in Sichuan Prov-ince,curing experiments were carried out by using oil-based cuttings,modified curing agent MSM,cement and fly ash,and microscopic analysis was conducted by XRF,XRD and SEM.The test results show that the average strength of oil-based cuttings after curing can reach 2.5 MPa and the water stability can reach 94％,which meets the requirements of the code and can be used directly as subgrade filler.In addition,the modified curing agent can promote the depolymerization of ac-tive SiO2,BaSO4,CaCO3 and other substances in oil-based rock debris,and secondary hydration reaction with ordinary Portland cement to produce C-S-H and C-A-H hydration products,and enhance the structural compactness and engineer-ing performance of the base.
NETL
NSTL
万方数据
