A foam nickel-based silicon alloy sand control device and its manufacturing method

Abstract

The invention relates to a foamed-nickel-based silicon alloy sand preventing device. The foamed-nickel-based silicon alloy sand preventing device comprises a base tube, locating hoops, a blocking cap, a pipe joint and a sand preventing sleeve. The pipe joint is fixedly connected to the upper end of the base tube, the blocking cap is fixedly connected to the lower end of the base tube, and a plurality of overflowing holes are formed in the base tube. The foamed-nickel-based silicon alloy sand preventing device is further characterized in that a spiral supporting ring is fixed on the base tube with the overflowing holes, the sand preventing sleeve is a foamed-nickel-based silicon alloy sand preventing sleeve, the foamed-nickel-based silicon alloy sand preventing sleeve is connected to the spiral supporting ring in a sleeved mode, and the upper end and the lower end of the foamed-nickel-based silicon alloy sand preventing sleeve are fixedly connected with the base tube through the locating hoops which are fixedly connected. The foamed-nickel-based silicon alloy sand preventing device has the advantages of being high in strength, large in open area, good in hydrophilia, high in permeability, good in sand preventing effect, long in service life and the like.

Description

technical field [0001] The invention relates to downhole tools for oil production in oil fields, in particular to a foam nickel-based silicon alloy sand control device and a manufacturing method thereof. Background technique [0002] Existing sand control tools in oil production wells in oilfields mainly use various sand control screens such as stainless steel expanded mesh type, laser slotted type, and wire wound type. Although the above products have played a certain role in the application practice of sand control wells, they still have defects such as low strength, easy deformation, small flow area, no hydrophilicity, low permeability, poor sand control effect, and short service life. In recent years, a high-precision foam nickel sand control device has appeared. Compared with stainless steel expanded mesh, laser slotted, and wire-wrapped sand control screens, the high-precision foam nickel sand control screen has improved performance and can achieve Depth filtration ha...

AI Technical Summary

Problems solved by technology

Although the above products have played a certain role in the application practice of sand control wells, there are still defects such as low strength, easy deformation, small flow area, no hydrophilicity, low permeability, poor sand control effect, and short service life.

In recent years, a high-precision foam nickel sand control device has appeared. Compared with stainless steel expanded mesh, laser slotted, and wire-wrapped sand control screens, the high-precision foam nickel sand control screen has improved performance and can achieve Depth filtration has a good sand control effect, but because the sand control sleeve of the high-precision foam nickel sand control device is made of a single foam nickel metal mesh, the material of the mesh does not contain Si element, lacks hydrophilic performance, and is resistant to oil liquid. Poor wettability, lack of adsorption, no hydrophilicity, affecting the permeability of nickel foam metal mesh to petroleum liquid, poor fluidity and large resistance of petroleum liquid, affecting oil recovery efficiency

In particular, the shortcomings of heavy sand oil wells and heavy wax oil wells are more prominent, directly affecting oil recovery efficiency and service life

There is no gap between the nickel foam sand control sleeve and the base pipe of the existing high-precision foam nickel sand control device. It is directly in contact with the nickel foam sand control sleeve, which blocks the inflow of oil liquid, and the maximum outer diameter of the foam nickel sand control sleeve is only φ76mm, the effective area of ​​expansion is small, the flow area is small, and the resistance increases when the oil liquid passes through, which affects Oil fluid flow, low oil recovery efficiency

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