Patent ID: 11912932
Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  Y | IPC C  E

Claim 6:
7. An encapsulated polymer flooding system for enhancing oil recovery, comprising:
a target oil reservoir parameter, well deployment and development dynamic state determination module, configured to determine reservoir parameters, a well deployment, and a development dynamic state of the target oil reservoir by determining reservoir permeability, porosity, heterogeneity, temperature, salinity, positions of and a relative distance between a water injection well and a producing well, and a remaining oil distribution;
a near-wellbore targeted profile control area and far-wellbore targeted viscosification area determination module, configured to determine the near-wellbore targeted profile control area and the far-wellbore targeted viscosification area by determining an area with the maximum intra-reservoir longitudinal permeability ratio or a longitudinal permeability variation coefficient greater than 0.6 in a seepage direction as a near-wellbore targeted profile control area of the oil reservoir, defining the maximum horizontal distance between the near-wellbore targeted profile control area of the oil reservoir and the water injection well as a targeted distance x1, determining an area with the intra-reservoir longitudinal average remaining oil saturation greater than 0.6 as a far-wellbore targeted viscosification area, and defining the minimum horizontal distance between the far-wellbore targeted viscosification area and the water injection well as a targeted distance x2;
an encapsulated polymer design module, configured to design and synthesize an encapsulated polymer according to conditions of the target oil reservoir;
an encapsulated polymer performance evaluation module, configured to evaluate the anti-shearing performance, the sustained release and viscosification performance, the injection performance, and the profile control performance of the encapsulated polymer based on laboratory tests; and
an encapsulated polymer flooding field injection scheme formulation module, configured to formulate an injection scheme for an encapsulated polymer flooding field.