2results about How to "Increase oil volume" patented technology

The invention relates to the technical field of oilfield development, and discloses a composition with an oil displacement function, application of the composition and a thickened oil recovery method. The composition comprises a nano material, a surfactant and a polymer, wherein the surfactant is selected from at least one of fatty alcohol polyether sulfonate, fatty alcohol polyether sulfate, a gemini surfactant containing a sulfonic acid group, a glycoside compound, an alcohol amine compound and an amide compound containing a hydroxyl group; wherein the mass ratio of the nano material to the surfactant is (0.1-2): 1. The aqueous solution of the composition has the characteristics of high viscosity and low interfacial tension in indoor experiments and field application, and can reduce the average water content of high-calcium-magnesium oil reservoirs and improve the crude oil recovery rate, thereby greatly improving the oil quantity and benefits of low-yield and low-efficiency wells.

The application discloses a crankshaft-main bearing assembly, a compressor pump body assembly and a compressor, and relates to the technical field of compressors. The long shaft part of the crankshaft is matched with the main bearing inner hole of the main bearing; the axial center of the crankshaft is provided with a center oil hole; the center oil hole is a blind hole structure; the surface of the long shaft part is provided with an upper radial oil hole; the first end of the upper radial oil hole is communicated with the blind end of the center oil hole; the second end of the upper radial oil hole is communicated with the surface of the long shaft part; the upper radial oil hole is located above the bearing upper top surface of the main bearing; an oil storage groove is arranged on the bearing upper top surface; the oil storage groove is used for storing the refrigerating machine oil flowing out through the upper radial oil hole and overflowing the stored refrigerating machine oil to the contact surface between the main bearing inner hole and the long shaft part; the oil film thickness of the main bearing inner hole and the crankshaft long shaft is increased, the wear between the crankshaft long shaft and the upper end of the main bearing inner hole is effectively reduced, and the reliability of the pump body assembly operation is improved.