Porous metal screen tube and making method thereof
A technology of porous metal and manufacturing method, which is applied in the fields of earthwork drilling, production of fluids, wellbore/well components, etc., can solve the problems of sand control failure of screen tubes, cracking failure of welded joints, etc., so as to prolong sand control operation time and improve oil production efficiency. , the use of good effect
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[0020] refer to figure 1 , the porous metal screen of this embodiment is a seamless porous metal screen 1.
[0021] The seamless porous metal screen 1 is made of pure nickel.
[0022] The outer diameter of the seamless porous metal screen 1 is 156.7mm, the inner diameter is 144.7mm, and the length of the screen is 500mm. Of course, it can also be made into products of other sizes, such as a length of 1000mm.
[0023] The manufacturing method of the porous metal screen comprises the following steps:
[0024] The sponge is roughened, cleaned, sensitized, activated, and chemically nickel-plated to deposit a layer of metallic nickel, and then the sponge deposited with metallic nickel is placed on the hanger, firstly with 2-4A / dm 2 Electroplating at a current density of 30 minutes, take out the inner support tube of the hanger, and then use 1-2A / dm 2 Electroplating at a current density of 15 hours, remove the product from the hanger and wash it fully until the washing liquid is ...
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