During the development of the oilfield

the water flooding disturbs the primary reservoir pressure

leads to the deformation of the deep formation in the oilfield and affects the extraction ratio of oil. In order to obtain the main effect parameters of the deformation

an experiment with 3 levels for 5 parameters was conducted by Hyper-Latin square experiment based on fluid-solid coupling theory. Then

the relationships among the deformation response and the different parameters were obtained after the regression and analysis by RSM method for 33 designed experiments. The results show that the injection pressure has significant influence on the effective stress and deformation. And the properties of the reservoirs affect more on the initial stage for the effective stress

however

the later period for the normal strain. The elastic modulus of the rock mechanics properties has little effect on the effective stress

and is a significant parameter for the normal strain and subsidence.