A foam metal alloy material, sand control screen pipe, preparation method and application thereof

Abstract

The present invention discloses a foamed metal alloy material, a sand control screen pipe, and a preparation method and application thereof. The preparation method of the foamed metal alloy material comprises the following steps: coating a metal mixed slurry on the surface of a polyurethane sponge, and curing to obtain a precursor of an alloy sponge structure; performing staged heat treatment on the precursor of the alloy sponge structure in a vacuum to obtain an alloy sponge structure; using the alloy sponge structure as a cathode, and performing electrodeposition with a composite electrodeposition solution and an anode to obtain a precursor of a foamed metal alloy material; and performing thermal diffusion on the precursor of the foamed metal alloy material in a vacuum to obtain a foamed metal alloy material. In this application, the matrix material is alloyed and Ni-La-Nb-Al2O3 is loaded, which can significantly improve the properties such as the corrosion resistance and tensile strength of the obtained foamed metal alloy material, and it can be used to prepare a metal sponge structure type oil and sand separation and filtration material resistant to H2S, Cl corrosion and / or erosion.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas exploitation, and in particular to a foam metal alloy material, a sand control screen pipe, and a preparation method and application thereof. Background Art

[0002] At present, in oil and gas production, formation sand will enter the wellbore with the flow of oil and gas, resulting in complex situations such as pump jamming and sand burial in the wellbore, affecting the normal production of oil and gas wells. Sand screens are mechanical filtering tools used to prevent formation sand from entering the wellbore and control sand production in the formation. There are many types of sand screens, but they all have shortcomings. For example, the seepage area of ​​slit screens is small, the slit width is large, the sand filtering effect is not good, and the common rectangular slits are easy to accumulate sand particles, causing blockage; for example, the filtration accuracy of metal mesh screens needs to be determined in advance. Once improperly selected, it will lead to sand control failure or screen blockage. In addition, when the formation is highly corrosive, the screen will be corroded; in formations prone to scaling, scaling will occur in the slits; these factors will reduce the sand control effect or even lead to sand control failure.

[0003] Therefore, the requirements for sand screens are large seepage area, resistance to corrosion by acids or salts, and high tensile strength. However, current sand screens are welded into barrel shapes by plate materials, which will cause welding gaps in the generated sand screens. The welding gaps are different from the composition of the surrounding materials, resulting in different tensile strengths, etc., making this part easy to damage; moreover, the welding joints will also reduce the corrosion resistance of the sand screens and the quality of the welding is not easy to detect, which will leave quality risks; in addition, due to welding, the pores of the sand screens will be blocked, resulting in a reduction in the seepage area, etc., which greatly reduces the filterability and increases the cost. Therefore, the inventor believes that it is of great significance to develop a sand screen that is corrosion-resistant, has high tensile strength, has a large seepage area, and does not require welding. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a foam metal alloy material, a sand control screen pipe, a preparation method and an application thereof, wherein the base material is alloyed and Ni-La-Nb-Al2O3 is loaded, so that the corrosion resistance, erosion resistance and tensile strength and other properties can be significantly improved; the sand control screen pipe prepared by using the foam metal alloy material avoids the subsequent electric welding operation by first curling the sponge structure, thereby increasing the filtration area and improving the filtration efficiency.

[0005] In a first aspect, the present invention provides a method for preparing a foam metal alloy material, which is achieved by adopting the following technical solution.

[0006] A method for preparing a foam metal alloy material comprises the following steps:

[0007] S1. coating the metal mixed slurry on the surface of the polyurethane sponge and curing it to obtain an alloy sponge structure precursor;

[0008] The metal mixed slurry includes the following components in mass percentage: B 0.5-3%; Si 1-5%; Cu 0-8%; Fe 5-30%; methyl cellulose 0.5-5%; the balance is Ni;

[0009] S2. In a vacuum, heat treating the alloy sponge structure precursor in stages to obtain an alloy sponge structure;

[0010] S3. The alloy sponge structure is used as a cathode, and is electrodeposited with a composite electrodeposition solution and an anode to obtain a foam metal alloy material precursor;

[0011] The composite electrodeposition solution comprises the following components: 200-500 g / L nickel sulfamate; 0-20 g / L nickel chloride; 15-40 g / L boric acid; 0-2.5 g / L ammonium citrate; 0.1-1 g / L lanthanum; 0.05-0.5 g / L niobium; and 1-10 g / L aluminum oxide.

[0012] S4. In a vacuum, thermally diffuse the foam metal alloy material precursor to obtain a foam metal alloy material.

[0013] By adopting the above technical scheme, in the foam metal alloy material of the present application, the alloy body materials are nickel, iron and copper, and the alloy can significantly improve the metal-metal interaction force of nickel and fill the gaps between the nickel metal lattices, thereby making the alloy material denser; then, a Ni-La-Nb-Al2O3 layer is loaded, and the alloy layer is connected to the base material through the nickel element, thereby avoiding the problem of easy falling off of the conventional load layer; and the load layer can form a protective layer on the surface of the base material, avoiding the corrosion of the material by external elements such as oxygen, water, acid and alkali, and can significantly improve the wear resistance and erosion resistance.

[0014] Furthermore, the preparation method of the metal mixed slurry includes: placing the metal mixed material in water to obtain the metal mixed slurry. The metal mixed material includes: by mass, B 0.5-3%; Si 1-5%; Cu 0-8%; Fe 5-30%; methyl cellulose 0.5-5%; the balance is Ni. Among them, the mass content of B can be 0.5%, 1%, 1.5%, 2%, 2.5%, 3% or any value between any two values; the mass content of Si can be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5% or any value between any two values; the mass content of Cu can be 0, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8% or any value between any two values; the mass content of Fe can be The content of methyl cellulose can be 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30% or any value between any two values; the mass content of methyl cellulose can be 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5% or any value between any two values. The polyurethane sponge is coated with a mixed slurry containing iron, copper and nickel, so that the polyurethane sponge structure contains iron, copper and nickel elements, which becomes the matrix material of the foam metal alloy material.

[0015] Furthermore, in step S1, the curing temperature is 100-500° C. and the curing time is 40-120 min.

[0016] Furthermore, the curing conditions are: firstly heating to 100-200°C and treating for 20-60 minutes; then heating to 300-500°C and treating for 20-60 minutes.

[0017] After coating is completed, it is placed in a muffle furnace for curing, and the temperature is raised to 100-120°C, which can be 100°C, 101°C, 102°C, 103°C, 104°C, 105°C, 106°C, 107°C, 108°C, 109°C, 110°C, 111°C, 112°C, 113°C, 114°C, 115°C, 116°C, 117°C, 118°C, 119°C, 120°C or any value between any two values; the temperature is kept for 20-60 minutes, which can be 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes or any value between any two values. This process removes water in the slurry coated on the surface of the sponge structure, so that elements such as iron, copper and nickel are attached to the sponge structure. The temperature is then raised to 300-500°C, which can be 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, 400°C, 410°C, 420°C, 430°C, 440°C, 450°C, 460°C, 470°C, 480°C, 490°C, 500°C or any value between any two values; the temperature is kept for 20-60min, which can be 20min, 30min, 40min, 50min, 60min or any value between any two values. In this process, organic materials such as polyurethane and methyl cellulose in the slurry are carbonized, leaving only alloy materials, thereby obtaining an alloy sponge structure precursor and avoiding the influence of carbon materials on the vacuum degree and vacuum equipment in subsequent operations. Therefore, the curing process is to evaporate the water through high temperature sintering, deposit the metal mixed material on the sponge structure, and then heat up to oxidize or carbonize the polyurethane sponge, so that it falls off, leaving only the deposited alloy. Preferably, after coating, it is placed in a heating furnace for curing treatment, first heated to 100°C for 30 minutes; then heated to 500°C and kept at this temperature for 50 minutes.

[0018] Furthermore, in step S2, the conditions for the staged heat treatment are: at a vacuum degree of 3 to 7×10 -3 The temperature rises in stages under the condition of Pa, which can be divided into the following five stages:

[0019] In the first stage, heating to 100-200°C at 15-35°C / min and keeping warm for 30-90min;

[0020] In the second stage, the temperature is heated to 250-350°C at 5-15°C / min and kept at this temperature for 30-90 minutes;

[0021] The third stage is heating to 400-600°C at 5-15°C / min and keeping warm for 30-90min;

[0022] The fourth stage is heating to 800-1000°C at 5-15°C / min and keeping the temperature for 30-90min;

[0023] The fifth stage is heating to 1100-1300°C at 5-15°C / min and keeping warm for 60-500 minutes.

[0024] The heating rate of the first stage is 15-35°C / min, specifically 15°C / min, 20°C / min, 25°C / min, 30°C / min, 35°C / min or any value between any two values; the temperature is 100-200°C, specifically 100°C, 101°C, 102°C, 103°C, 104°C, 105°C, 106°C, 107°C, 108°C, 109°C, 110°C, 111°C, 112°C, 113°C, ℃, 114℃, 115℃, 116℃, 117℃, 118℃, 119℃, 120℃, 130℃, 140℃, 150℃, 160℃, 170℃, 180℃, 190℃, 200℃ or any value between any two values; the holding time is 30-90min, which can be 30min, 40min, 50min, 60min, 70min, 80min, 90min or any value between any two values.

[0025] The heating rate of the second stage is 5-15°C / min, and can be 5°C / min, 6°C / min, 7°C / min, 8°C / min, 9°C / min, 10°C / min, 11°C / min, 12°C / min, 13°C / min, 14°C / min, 15°C / min or any value between any two values; the temperature is 250-350°C, and can be 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C or any value between any two values; the holding time is 30-90min, and can be 30min, 40min, 50min, 60min, 70min, 80min, 90min or any value between any two values.

[0026] The heating rate of the third stage is 5-15°C / min, specifically 5°C / min, 6°C / min, 7°C / min, 8°C / min, 9°C / min, 10°C / min, 11°C / min, 12°C / min, 13°C / min, 14°C / min, 15°C / min or any value between any two values; the temperature is 400-600°C, specifically 400°C, 410°C, 420°C, 430°C, 440°C, 450°C, 0℃, 460℃, 470℃, 480℃, 490℃, 500℃, 510℃, 520℃, 530℃, 540℃, 550℃, 560℃, 570℃, 580℃, 590℃, 600℃ or any value between any two values; the holding time is 30-90min, which can be 30min, 40min, 50min, 60min, 70min, 80min, 90min or any value between any two values.

[0027] The heating rate of the fourth stage is 5-15°C / min, specifically 5°C / min, 6°C / min, 7°C / min, 8°C / min, 9°C / min, 10°C / min, 11°C / min, 12°C / min, 13°C / min, 14°C / min, 15°C / min or any value between any two values; the temperature is 800-1000°C, specifically 800°C, 810°C, 820°C, 830°C, 840°C, 850°C, 860°C, 870°C, 880°C, 890°C, 900°C, 910°C, 920°C, 930°C, 940°C, 950°C, 960°C, 970°C, 980°C, 990°C, 10 ... 0℃, 860℃, 870℃, 880℃, 890℃, 900℃, 910℃, 920℃, 930℃, 940℃, 950℃, 960℃, 970℃, 980℃, 990℃, 1000℃ or any value between any two values; the holding time is 30-90min, which can be 30min, 40min, 50min, 60min, 70min, 80min, 90min or any value between any two values.

[0028] The heating rate of the fifth stage is 5-15°C / min, specifically 5°C / min, 6°C / min, 7°C / min, 8°C / min, 9°C / min, 10°C / min, 11°C / min, 12°C / min, 13°C / min, 14°C / min, 15°C / min or any value between any two values; the temperature is 1100-1300°C, specifically 1100°C, 1110°C, 1120°C, 1130°C, 1140°C, 1150°C, 1160°C, 1170°C, 0℃, 1180℃, 1190℃, 1200℃, 1210℃, 1220℃, 1230℃, 1240℃, 1250℃, 1260℃, 1270℃, 1280℃, 1290℃, 1300℃ or any value between any two values; the holding time is 60-500min, which can be 60min, 70min, 80min, 90min, 100min, 200min, 300min, 400min, 500min or any value between any two values.

[0029] Since the three metal elements of nickel, iron and copper have high expansion coefficients and different expansion coefficients, in order to avoid the reduction of alloy bonding strength caused by the rapid expansion of nickel, iron and copper due to direct rapid heating, the present application uses a staged heating method to slowly heat up and minimize the expansion process of each element, so that the expansion of nickel, iron and copper is slow, and the difference caused by their different expansion coefficients is minimized, so that iron and copper can be embedded in the nickel structure more smoothly; through staged heat treatment, iron, copper and nickel elements can be evenly distributed, thereby obtaining an alloy matrix material with a tighter bond, and iron and copper fill the gaps between the nickel metal lattices, thereby making the alloy material denser.

[0030] Specifically, the content of nickel sulfamate in the composite electrodeposition solution can be 200g / L, 250g / L, 300g / L, 350g / L, 400g / L, 450g / L, 500g / L or any value between any two values; the content of nickel chloride can be 0, 1g / L, 2g / L, 3g / L, 4g / L, 5g / L, 6g / L, 7g / L, 8g / L, 9g / L, 10g / L, 11g / L, 12g / L, 13g / L, 14g / L, 15g / L, 16g / L, 17g / L, 18g / L, 19g / L, 20g / L or any value between any two values; the content of boric acid can be 15g / L, 16g / L, 17g / L, 18g / L, 19g / L, 20g / L, 21g / L, 22g / L, 23g / L, 24g / L, 25g / L, 26g / L, 27g / L, 28g / L, 29g / L, 30g / L, 31g / L, 32g / L, 33g / L, 34g / L, 35g / L, 36g / L, 37g / L, 38g / L, 39g / L, 40g / L or any value between any two values; the content of ammonium citrate can be 0, 0. The content of lanthanum can be 0.1g / L, 0.2g / L, 0.3g / L, 0.4g / L, 0.5g / L, 0.6g / L, 0.7g / L, 0.8g / L, 0.9g / L, 1g / L, 1.1g / L, 1.2g / L, 1.3g / L, 1.4g / L, 1.5g / L, 1.6g / L, 1.7g / L, 1.8g / L, 1.9g / L, 2g / L, 2.1g / L, 2.2g / L, 2.3g / L, 2.4g / L, 2.5g / L or any value between any two values; the ... g / L, 0.4g / L, 0.5g / L, 0.6g / L, 0.7g / L, 0.8g / L, 0.9g / L, 1g / L or any value between any two values; the niobium content can be 0.05g / L, 0.1g / L, 0.2g / L, 0.3g / L, 0.4g / L, 0.5g / L or any value between any two values; the aluminum oxide content can be 0, 1g / L, 2g / L, 3g / L, 4g / L, 5g / L, 6g / L, 7g / L, 8g / L, 9g / L, 10g / L or any value between any two values.

[0031] By electro-depositing nickel, lanthanum, niobium and aluminum oxide, it is not only possible to efficiently fuse with the alloy matrix, but also to coat the alloy matrix material. Ni-La-Nb-Al2O3 is loaded on the surface of the alloy matrix. The Ni-La-Nb-Al2O3 layer has good corrosion resistance and erosion resistance, which significantly improves the overall performance of the generated foam metal alloy material. In addition, the low-concentration electrodeposition liquid has good dispersion and covering capabilities, the deposited layer is more delicate in crystallization, the deposited layer is uniform in color, and a higher current is allowed to be used, and the deposition speed is faster.

[0032] Further, in step S3, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode at 0.5 to 10 A / dm 2 Electrodeposition is carried out at a current density of 200 ℃ and ultrasonic stirring at 5-30℃ for 2-60h.

[0033] Specifically, the current density of the electrodeposition can be 0.5A / dm 2 , 0.6A / dm 2 , 0.7A / dm 2 , 0.8A / dm 2 , 0.9A / dm 2 , 1A / dm 2 , 2A / dm 2 、3A / dm 2 , 4A / dm 2 , 5A / dm 2 、6A / dm 2 , 7A / dm 2 , 8A / dm 2 、9A / dm 2 、10A / dm 2 or any value between any two values; the temperature can be 5℃ / min, 6℃ / min, 7℃ / min, 8℃ / min, 9℃ / min, 10℃ / min, 11℃ / min, 12℃ / min, 13℃ / min, 14℃ / min, 15℃ / min, 16℃ / min, 17℃ / min, 18℃ / min, 19℃ / min, 20℃ / min, 21℃ / min, 22℃ / min, 23℃ / min, 24℃ / min, 25℃ / min, 26℃ / min, 27℃ / min, 28℃ / min, 29℃ / min, 30℃ / min or any value between any two values; the time can be 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 20h, 30h, 40h, 50h, 60h or any value between any two values.

[0034] Furthermore, in step S4, the heat diffusion condition is: at a vacuum degree of 3 to 7×10-3 Pa, heat to 900-1000°C at 15-25°C / min, and keep warm for 5-15min; then heat to 1100-1200°C at 5-15°C / min, and keep warm for 200-300min.

[0035] Thermal diffusion is performed on the precursor of the foam metal alloy material after the electrodeposition of nickel, lanthanum, niobium and aluminum oxide, so that nickel, lanthanum, niobium, iron and copper are evenly distributed on the surface of the alloy matrix material, which can increase the metal interaction between the elements and embed them into the metal lattice to avoid uneven deposition of the outer coating layer, which causes structural defects in the entire composite material and reduces performance. At the same time, nickel wraps lanthanum, niobium and aluminum oxide to fix them tightly on the surface of the matrix material, just like inlaying hard "gems" on the surface of the alloy matrix, which greatly increases the wear resistance of the foam metal alloy material. In addition, due to thermal diffusion, the interface problem between the Ni-La-Nb-Al2O3 layer and the alloy matrix is ​​reduced, making them a whole, and significantly enhancing the tensile strength and other properties.

[0036] In summary, the addition of iron and copper can be embedded in the lattice structure of nickel to form an alloy. At the same time, through staged heat treatment, the iron-nickel-copper alloying can be carried out smoothly, avoiding problems such as cracking. Subsequently, electrodeposition can be carried out to deposit a layer of Ni-La-Nb-Al2O3 material on the surface of the nickel-iron-copper matrix material, which can significantly improve the high-temperature strength and wear resistance of the matrix material. Among them, Ni can be integrated with the matrix material, avoiding the interface problem between the subsequent deposition layer and the matrix layer, and avoiding falling off; La can promote the solid solution of Nb, Ni and Al2O3 with the matrix material, and enhance the bonding of the substances between the two layers; Nb can refine the grain microalloying elements, avoiding the problem of recrystallization, and only adding a trace amount (for example, 0.03%) can play a significant role; Aluminum oxide has high wear resistance, and its inlay on the surface of the foam metal alloy material can reduce the contact and wear of the matrix material, thereby improving the overall erosion resistance and wear resistance of the foam metal alloy material; Afterwards, through thermal diffusion, the Ni-La-Nb-Al2O3 material can be fused with the matrix material, and each alloy element can be evenly diffused to form a truly integrated structure. Compared with the material that is only alloyed on the surface, its bonding force is stronger and the structure is more stable, thus having better performance. The foam metal alloy material generated by this application not only has the good high temperature strength and wear resistance of ceramic materials, but also has the excellent electrical conductivity and thermal conductivity of metal materials, and can be better applied to scenes with high requirements for material strength and wear resistance.

[0037] In a second aspect, the present invention provides a foam metal alloy material, which is realized by adopting the following technical solution.

[0038] A foam metal alloy material prepared by the above preparation method.

[0039] In a third aspect, the present invention provides a use of a foam metal alloy material, which is achieved by adopting the following technical solution.

[0040] An application of the above-mentioned foamed metal alloy material in oil and gas production, wherein the foamed metal alloy material is used for oil sand separation in oil and gas production.

[0041] Specifically, the foam metal alloy material is used in the preparation of a metal sponge structured oil and sand separation filter material resistant to H2S and Cl corrosion.

[0042] Specifically, the foam metal alloy material is used in preparing an erosion-resistant metal sponge structured oil and sand separation filter material.

[0043] Specifically, the foam metal alloy material is used in the preparation of a sand control screen.

[0044] In a fourth aspect, the present invention provides a sand control screen pipe, which is implemented by adopting the following technical solution.

[0045] A sand control screen pipe comprises the foam metal alloy material.

[0046] In a fifth aspect, the present invention provides a method for preparing a sand control screen, which is achieved by adopting the following technical solution.

[0047] A method for preparing a sand control screen pipe is to curl the foam metal alloy material to obtain the sand control screen pipe.

[0048] Specifically, a method for preparing the above-mentioned sand control screen comprises the following steps:

[0049] S1. Curling the polyurethane sponge to obtain a cylindrical polyurethane sponge;

[0050] S2. A preparation method of a foam metal alloy material is used to coat, heat treat, electrodeposit and thermally diffuse a cylindrical polyurethane sponge to obtain a sand control screen.

[0051] Furthermore, in step S1, the curling includes heat curling, and then the interface is fixed. The fixing method can be adhesive bonding, or a fixed cylindrical mold is used to load it so that the interface is in contact.

[0052] This method can avoid the subsequent direct electric welding of composite sponge structure alloy materials to form large welds, which affects the filtering performance; it can make the elements of the sand control screen pipe evenly distributed, avoiding problems such as easy corrosion, low strength and short service life caused by uneven distribution; and it can prepare long sand control screen pipes, so that in actual use, the connection between sand control screen pipes can be reduced, avoiding some adverse effects caused by the connection.

[0053] This application has the following beneficial effects.

[0054] (1) The present application adds iron, copper and nickel elements to the metal mixed slurry, which can be fully integrated during the solidification process on the sponge surface, thereby obtaining a uniformly distributed alloy matrix material, and also avoiding the problems of structural instability and easy cracking caused by batch electrodeposition of nickel, iron and copper; the present application also adds lanthanum, niobium and aluminum oxide to the electrodeposition liquid, which can make lanthanum, niobium and aluminum oxide deposited simultaneously with nickel, avoiding the problem of poor bonding between La-Nb-Al2O3 and nickel; and then thermal diffusion is performed, which can further promote the uniform distribution of each element, so that the elements are directly combined more closely and complement each other, and finally generate a dense foam metal alloy material with excellent corrosion resistance, erosion resistance, high tensile strength and other properties;

[0055] (2) The present application first curls the sponge structure to obtain a cylindrical structure, and then performs subsequent steps such as conductive treatment, electrodeposition and heat treatment, so as to produce a seamless integrated sand screen pipe that can be used directly without the need for subsequent electric welding and other operations, thereby saving production costs. In addition, compared with conventional electric welded sand screen pipes, the seamless integrated sand screen pipe has a larger filtration area, greatly improved filtration efficiency, and has better corrosion resistance, erosion resistance, high tensile strength and other properties, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a morphology diagram of the foam metal alloy material prepared in Example 1 of the present invention;

[0057] Figure 2 The appearance of the sand control screen pipes prepared by Example 7 (right) and Comparative Example 4 (left) of the present invention are shown. DETAILED DESCRIPTION

[0058] The present patent application is further described below in conjunction with embodiments.

[0059] Unless otherwise specified, the experimental methods used in the following preparation examples and examples are all conventional methods; the materials, reagents, etc. used in the following preparation examples and examples are all commercially available unless otherwise specified.

[0060] Example 1

[0061] A method for preparing a foam metal alloy material comprises the following steps:

[0062] (1) A metal mixed material (B 0.5%; Si 1.5%; Cu 6%; Fe 10%; methyl cellulose 0.5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 100 degrees, kept warm for 30 minutes, then heated to 500 degrees, kept warm for 50 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0063] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Pa, first heated to 150 ° C at 15 ° C / min, kept warm for 80 min, then heated to 330 ° C at 10 ° C / min, kept warm for 90 min, then heated to 550 ° C at 8 ° C / min, kept warm for 35 min, then heated to 820 ° C at 15 ° C / min, kept warm for 37 min, then heated to a specific temperature of 1180 ° C at 7 ° C / min, kept warm for 210 min, finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0064] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 1A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring. The electroplating solution is: 250g / L nickel sulfamate, 20g / L nickel chloride, 18g / L boric acid, 1.5g / L ammonium citrate, 0.2g / L lanthanum nanopowder, 0.07g / L niobium nanopowder, and 9g / L Al2O3 nanopowder.

[0065] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 0.05°C Pa, first heated to 950°C at 20°C / min, kept warm for 10 min, then heated to a specific temperature of 1150°C at 10°C / min, kept warm for 240 min, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0066] Figure 1 This is the morphology of the foam metal alloy material prepared in this embodiment, as shown in Figure 1As shown, the surface of the alloy material contains aluminum oxide particles, and other elements are evenly distributed. The surface element particles are small and tightly combined. From the figure, it can be seen that the elements of the matrix material and the subsequent nickel, niobium and lanthanum elements are evenly mixed and integrated, avoiding interface problems.

[0067] Example 2

[0068] A method for preparing a foam metal alloy material comprises the following steps:

[0069] (1) A metal mixed material (B 1%; Si 4.5%; Cu 4%; Fe 20%; methyl cellulose 5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 120 degrees and kept warm for 45 minutes, then the heating furnace is heated to 500 degrees and kept warm for 40 minutes to remove the polyurethane sponge and obtain an alloy sponge structure precursor.

[0070] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Pa, first heated to 200 ° C at 20 ° C / min, kept warm for 50 min, then heated to 270 ° C at 12 ° C / min, kept warm for 60 min, then heated to 460 ° C at 12 ° C / min, kept warm for 75 min, then heated to 980 ° C at 11 ° C / min, kept warm for 69 min, then heated to a specific temperature of 1270 ° C at 9 ° C / min, kept warm for 320 min, and finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0071] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 9A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electroplating solution is: 300 g / L nickel sulfamate, 15 g / L nickel chloride, 20 g / L boric acid, 2.2 g / L ammonium citrate, 0.5 g / L lanthanum nanopowder, 0.13 g / L niobium nanopowder, and 3 g / L Al2O3 nanopowder.

[0072] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3Heating was started at 1200 ℃ Pa, first heated to 930℃ at 23℃ / min, kept warm for 13min, then heated to a specific temperature of 1170℃ at 8℃ / min, kept warm for 260min, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0073] Example 3

[0074] A method for preparing a foam metal alloy material comprises the following steps:

[0075] (1) A metal mixed material (B 1.5%; Si 3%; Cu 2%; Fe 15%; methyl cellulose 3.5%; the balance Ni) was dissolved in deionized water to form a metal mixed slurry; the metal mixed slurry was then coated on a 50ppi polyurethane sponge model at a coating amount of 1.5g / cm 3 ; Then the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 180 degrees and kept warm for 40 minutes, then the heating furnace is heated to 500 degrees and kept warm for 45 minutes to remove the polyurethane sponge and obtain an alloy sponge structure precursor.

[0076] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 25°C / min, first heated to 180°C, kept warm for 90 min, then heated to 310°C at 7°C / min, kept warm for 70 min, then heated to 580°C at 14°C / min, kept warm for 85 min, then heated to 850°C at 8°C / min, kept warm for 78 min, then heated to a specific temperature of 1210°C at 11°C / min, kept warm for 180 min, and finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0077] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 8A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electroplating solution is: 400 g / L nickel sulfamate, 10 g / L nickel chloride, 27 g / L boric acid, 1.3 g / L ammonium citrate, 0.7 g / L lanthanum nanopowder, 0.25 g / L niobium nanopowder, and 5 g / L Al2O3 nanopowder.

[0078] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3Heating was started at 17°C / min, first heated to 970°C, kept warm for 11 min, then heated to a specific temperature of 1130°C at 11°C / min, kept warm for 280 min, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0079] Example 4

[0080] A method for preparing a foam metal alloy material comprises the following steps:

[0081] (1) A metal mixed material (B 2%; Si 3.5%; Cu 5%; Fe 21%; methyl cellulose 2.5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 160 degrees, kept warm for 35 minutes, then heated to 500 degrees, kept warm for 47 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0082] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 30°C / min, first heated to 130°C, kept warm for 30 min, then heated to 290°C at 9°C / min, kept warm for 50 min, then heated to 510°C at 6°C / min, kept warm for 45 min, then heated to 930°C at 5°C / min, kept warm for 59 min, then heated to a specific temperature of 1250°C at 13°C / min, kept warm for 100 min, and finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0083] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 3A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electrodeposition solution is: 450 g / L nickel sulfamate, 12 g / L nickel chloride, 35 g / L boric acid, 1.8 g / L ammonium citrate, 0.6 g / L lanthanum nanopowder, 0.38 g / L niobium nanopowder, and 7 g / L Al2O3 nanopowder.

[0084] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3Heating was started at 1200 ℃ Pa, first heated to 990℃ at 21℃ / min, kept warm for 7min, then heated to a specific temperature of 1190℃ at 13℃ / min, kept warm for 290min, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0085] Example 5

[0086] A method for preparing a foam metal alloy material comprises the following steps:

[0087] (1) A metal mixed material (B 2.5%; Si 2.5%; Cu 8%; Fe 8%; methyl cellulose 1.5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 200 degrees, kept warm for 20 minutes, then heated to 500 degrees, kept warm for 55 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0088] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 35°C / min, first heated to 100°C, kept warm for 70 min, then heated to 250°C at 5°C / min, kept warm for 30 min, then heated to 420°C at 10°C / min, kept warm for 55 min, then heated to 880°C at 13°C / min, kept warm for 43 min, then heated to a specific temperature of 1110°C at 5°C / min, kept warm for 420 min, and finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0089] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 6A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electroplating solution is: 500g / L nickel sulfamate, 38g / L boric acid, 1g / L lanthanum nanopowder, 0.46g / L niobium nanopowder, and 6g / L Al2O3 nanopowder.

[0090] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 1200 ℃ Pa, first heated to 910℃ at 24℃ / min, kept warm for 9 minutes, then heated to a specific temperature of 1110℃ at 5℃ / min, kept warm for 210 minutes, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0091] Example 6

[0092] A method for preparing a foam metal alloy material comprises the following steps:

[0093] (1) A metal mixed material (B 3%; Si 5%; Cu 0%; Fe 30%; methyl cellulose 3%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 150 degrees, kept warm for 60 minutes, then heated to 500 degrees, kept warm for 60 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0094] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 15°C / min, first heated to 150°C at 15°C / min, kept warm for 60 min, then heated to 300°C at 15°C / min, kept warm for 60 min, then heated to 500°C at 15°C / min, kept warm for 60 min, then heated to 900°C at 15°C / min, kept warm for 60 min, then heated to a specific temperature of 1150°C at 15°C / min, kept warm for 480 min, and finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0095] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 5A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The precursor of the foamed metal alloy material is obtained by electrodeposition at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electrodeposition solution is: 350 g / L nickel sulfamate, 20 g / L nickel chloride, 15 g / L boric acid, 2 g / L ammonium citrate, 0.1 g / L lanthanum nanopowder, 0.05 g / L niobium nanopowder, and 10 g / L Al2O3 nanopowder.

[0096] (4) Place it in a vacuum furnace and evacuate it. When the vacuum degree in the furnace reaches 5×10 -3 Heating was started at 15°C / min, first heated to 960°C, kept warm for 15 minutes, then heated to a specific temperature of 1200°C at 15°C / min, kept warm for 250 minutes, and finally cooled to room temperature with the furnace to obtain a foamed metal alloy material.

[0097] Example 7

[0098] A method for preparing a sand control screen comprises the following steps:

[0099] (1) Curling a 50ppi polyurethane sponge model, fixing the interface with organic glue to stabilize the cylindrical structure, and then fully infiltrating the cylindrical polyurethane sponge model in a metal mixed slurry, wherein the metal mixed slurry is the same as the metal mixed slurry in Example 1; the subsequent steps are exactly the same as step (1) in Example 1 to obtain an alloy sponge structure precursor.

[0100] (2) Conducting, electro-depositing and thermally diffusing the alloy sponge structure precursor, the specific steps are exactly the same as step (2), step (3) and step (4) of Example 1, and finally obtaining a seamless integrated sand control screen pipe, which can be used directly without welding. The preparation method can be used to prepare a long-length (4 to 6 meters) sand control screen pipe.

[0101] Comparative Example 1

[0102] A method for preparing nickel foam comprises the following steps:

[0103] The polyurethane sponge raw material was cut into 1000mm×515mm plates, and was treated with conductive coating [nano silver powder (accounting for 4.5wt% of the conductive coating), hydroxymethyl cellulose (accounting for 0.4wt% of the conductive coating), polyvinyl pyrrolidone (accounting for 0.02wt% of the conductive coating), polyacrylamide (accounting for 0.08wt% of the conductive coating) and deionized water were uniformly mixed to form a conductive coating]; the conductive polyurethane sponge raw material was placed in a pH 4.2 electrolyte for electrodeposition, the electrolyte comprising 350g / L nickel sulfate, 70g / L nickel chloride, 20g / L boric acid, the temperature was 50 degrees, the current density was 0.5A / dm 2 The volume density of electrodeposited nickel is 1.5 g / cm 3 , and then heat treated in a heat treatment furnace at 900 degrees in a hydrogen-nitrogen mixed gas protection for 1 hour to finally obtain foamed metal nickel.

[0104] Comparative Example 2

[0105] A method for preparing an alloy sponge structure comprises the following steps:

[0106] The difference from Example 1 is that the operations of step (3) and step (4) are not performed, and only the operations of step (1) and step (2) are performed, which are specifically as follows:

[0107] (1) A metal mixed material (B 0.5%; Si 1.5%; Cu 6%; Fe 10%; methyl cellulose 0.5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 100 degrees, kept warm for 30 minutes, then heated to 500 degrees, kept warm for 50 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0108] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3 Pa, first heated to 150 ° C at 15 ° C / min, kept warm for 80 min, then heated to 330 ° C at 10 ° C / min, kept warm for 90 min, then heated to 550 ° C at 8 ° C / min, kept warm for 35 min, then heated to 820 ° C at 15 ° C / min, kept warm for 37 min, then heated to a specific temperature of 1180 ° C at 7 ° C / min, kept warm for 210 min, finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0109] Comparative Example 3

[0110] A method for preparing a foam metal alloy material comprises the following steps:

[0111] The difference from Example 1 is that step (4) is not performed, and only steps (1), (2) and (3) are performed, as follows:

[0112] (1) A metal mixed material (B 0.5%; Si 1.5%; Cu 6%; Fe 10%; methyl cellulose 0.5%; the balance is Ni) is dissolved in deionized water to form a metal mixed slurry; then the metal mixed slurry is coated on a 50ppi polyurethane sponge model with a coating amount of 1.5g / cm 3 ; Then, the polyurethane sponge model coated with the slurry is placed in a heating furnace for curing, first heated to 100 degrees, kept warm for 30 minutes, then heated to 500 degrees, kept warm for 50 minutes, and the polyurethane sponge is removed to obtain an alloy sponge structure precursor.

[0113] (2) The alloy sponge structure precursor after removing the polyurethane sponge is placed in a vacuum furnace to evacuate. When the vacuum degree in the furnace reaches 5×10 -3Pa, first heated to 150 ° C at 15 ° C / min, kept warm for 80 min, then heated to 330 ° C at 10 ° C / min, kept warm for 90 min, then heated to 550 ° C at 8 ° C / min, kept warm for 35 min, then heated to 820 ° C at 15 ° C / min, kept warm for 37 min, then heated to a specific temperature of 1180 ° C at 7 ° C / min, kept warm for 210 min, finally cooled to room temperature with the furnace to obtain an alloy sponge structure.

[0114] (3) In the electrodeposition solution, the alloy sponge structure is used as the cathode and the nickel plate is used as the anode, 1A / dm 2 Electrodeposition was carried out at a current density of 1.0 g / cm 3 The foamed metal alloy material is obtained by electroplating at room temperature (about 25 degrees Celsius) for 24 hours with ultrasonic stirring; wherein the electroplating solution is: 250 g / L nickel sulfamate, 20 g / L nickel chloride, 18 g / L boric acid, 1.5 g / L ammonium citrate, 0.2 g / L lanthanum nanopowder, 0.07 g / L niobium nanopowder, and 9 g / L Al2O3 nanopowder.

[0115] Comparative Example 4

[0116] A method for preparing a sand control screen comprises the following steps:

[0117] The foamed metal alloy material prepared in Example 1 was hot-rolled and then electric-welded to obtain a sand control screen pipe.

[0118] 1. Material performance testing

[0119] (1) Tensile strength

[0120] The test method refers to GB / T31930-2015 / ISO 13314:2011 "Metallic materials ductility test porous and honeycomb metal compression test method" to test the mechanical properties. The experimental results are shown in Table 1.

[0121] Table 1 Tensile strength test results of foamed metal alloy materials prepared in Examples 1-6 and Comparative Examples 1-3

[0122] ppi <![CDATA[Bulk density (g / cm 3 )]]> Elongation after break (%) Tensile strength(MPa) Example 1 50 2.5 19 32.40 Example 2 50 2.5 18 30.81 Example 3 50 2.5 17.5 36.55 Example 4 50 2.5 14 38.12 Example 5 50 2.5 12.8 40.55 Example 6 50 2.5 13.5 46.55 Comparative Example 1 50 2.5 17 13.27 Comparative Example 2 50 2.5 16 15.36 Comparative Example 3 50 2.5 16 16.25

[0123] It can be seen from Table 1 that the foam metal alloy materials of Examples 1 to 6 of the present application can significantly increase the tensile strength and can adapt to more severe application scenarios; since Comparative Example 1 is only foamed nickel, there is no alloy element as the matrix material, and there is no Ni-La-Nb-Al2O3 layer, its tensile strength is relatively low; Comparative Example 2 does not have a Ni-La-Nb-Al2O3 layer. Although the matrix is ​​an alloy, it can increase the tensile strength to a certain extent, but the increase is limited; In Comparative Example 3, no thermal diffusion is performed, so that the matrix material and the Ni-La-Nb-Al2O3 layer cannot be well integrated, so the improved tensile strength is also limited.

[0124] (2) Corrosion resistance

[0125] The test method is: the sample is placed in 10% dilute sulfuric acid at 100 degrees, the corrosion time is 4 hours, it is cleaned with alcohol before and after corrosion, dried, and weighed with an electronic analytical balance with an accuracy of 0.0001g. The results are shown in Table 2.

[0126] Table 2 Corrosion resistance test results of foam metal alloy materials prepared in Examples 1-6 and Comparative Examples 1-3

[0127]

[0128] As can be seen from Table 2, since the nickel foam in Comparative Example 1 contains only nickel elements, there are still many gaps in its metal lattice, which is easy to cause erosion by oxygen, water, acid and alkali, and finally causes corrosion; Comparative Example 2 is a nickel-iron-copper alloy, which has improved certain corrosion resistance compared to nickel foam, but without the load of lanthanum and aluminum oxide, it still causes certain corrosion, but is better than the corrosion resistance of Comparative Example 1; Comparative Example 3 is compared to Example 1, and no thermal diffusion is performed, which still causes oxygen, water, acid and alkali to erode the interface, so the corrosion resistance is still lower than the embodiment of the present application. In the embodiment of the present application, both the matrix material is alloyed, iron and copper are introduced, the matrix structure is made tighter, and lanthanum, niobium and aluminum oxide are loaded at the same time, which changes the properties of the surface of the matrix material again, and further improves the corrosion resistance of its surface.

[0129] 2. Comparison of Filtration Area of ​​Sand Control Screen

[0130] Figure 2The product appearance diagram of the sand screen prepared by the method of Example 7 and Comparative Example 4 is intuitively seen from the figure that the electric welded sand screen has a large electric weld, which will affect the filtration area of ​​the sand screen. Assuming that the size of the screen is the same, the inner diameter is 164mm, the outer diameter is 176mm, and the length is 1 meter. The sand screen of Comparative Example 4 is made of 1000mm×515mm×6mm foam nickel plate rolled and welded, the weld width is generally 20mm, the weld area is 1000mm×20mm, and the actual filtration area is: 1000mm×(515mm-20mm); while the sand screen of Example 7 of the present application is integrally formed and has no weld, so the filtration area is: 1000mm×515mm; therefore, the filtration area of ​​the sand screen of Example 7 of the present application is increased by: 1000mm×20mm / 1000mm×(515mm-20mm)=4.04% relative to the sunscreen screen of Comparative Example 4.

[0131] In addition, the length of a complete 5.5-inch conventional screen pipe is 4.35 meters. If the electric welded sand control screen pipe of Comparative Example 4 is used for preparation, 5 longitudinal welds and 4 transverse welds will be generated, among which the welding area of ​​the 5 longitudinal welds is 4.35m×0.02m=0.087m 2 The area of ​​the four transverse welds is 0.1517m×0.02m×4=0.0121m 2 , then the weld area of ​​the 4.35-meter-long sand screen is: 0.087m 2 +0.0121m 2 =0.0995m 2 ; The sieve tube preparation method of Example 7 of the present application can directly prepare a 4.35-meter-long sieve tube without welding, with an outer circumference of 0.1517m×3.14=0.476m, and a sieve tube area of ​​4.35m×0.476m=2.07m 2 Compared with the seamed screen tube, the filtration area of ​​the seamless screen tube in this application is increased by: 0.0995m 2 / (2.07m 2 -0.0995m 2 )=5.05%.

[0132] In addition, the screen pipe with welds also has the risk of cracking, that is, the structure of the weld is different from that of other parts of the screen pipe, and after being squeezed, it is difficult to disperse the squeezing force and it is easy to crack. The seamless sand control screen pipe of Example 7 of the present application can avoid the above risk.

[0133] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a foamed metal alloy material, characterized in that: The following steps are involved: S1. coating the metal mixed slurry on the surface of the polyurethane sponge and curing it to obtain an alloy sponge structure precursor; The metal mixed slurry includes the following components in mass percentage: B 0.5-3%; Si 1-5%; Cu 0-8%; Fe 5-30%; methyl cellulose 0.5-5%; the balance is Ni; The curing conditions are: firstly heat to 100~200℃ and treat for 20~60min; then heat to 300~500℃ and treat for 20~60min; S2. In a vacuum, heat treating the alloy sponge structure precursor in stages to obtain an alloy sponge structure; The conditions for the staged heat treatment are: staged heating under a vacuum degree of 3~7×10-3Pa, which is divided into the following five stages: In the first stage, heat to 100-200°C at 15-35°C / min and keep warm for 30-90min; In the second stage, the temperature is heated to 250-350°C at a rate of 5-15°C / min and kept at this temperature for 30-90 minutes; The third stage is heating to 400-600°C at 5-15°C / min and keeping warm for 30-90min; The fourth stage is heating to 800-1000°C at 5-15°C / min and keeping warm for 30-90min; The fifth stage is heating to 1100-1300°C at 5-15°C / min and keeping the temperature for 60-500min; S3. The alloy sponge structure is used as a cathode, and is electrodeposited with a composite electrodeposition solution and an anode to obtain a foam metal alloy material precursor; The composite electrodeposition solution comprises the following components: 200-500 g / L nickel sulfamate; Nickel chloride 0~20g / L; Boric acid 15~40g / L; Ammonium citrate 0~2.5g / L; Lanthanum 0.1~1g / L; Niobium 0.05~0.5g / L; Aluminum oxide 1~10g / L; S4. In a vacuum, the foam metal alloy material precursor is thermally diffused to obtain a foam metal alloy material; the thermal diffusion conditions are: at a vacuum degree of 3~7×10 -3 Pa, heat to 900~1000℃ at 15~25℃ / min, keep warm for 5~15min; then heat to 1100~1200℃ at 5~15℃ / min, keep warm for 200~300min.

2. The method for preparing a foamed metal alloy material according to claim 1, characterized in that: In step S3, the current density of the electrodeposition is 0.5~10A / dm 2 ; Temperature is 5~30℃; Time is 2~60h.

3. A foam metal alloy material prepared by the preparation method according to claim 1 or 2.

4. An application of the foamed metal alloy material according to claim 3 in oil and gas production, characterized in that: The foamed metal alloy material is used for oil sand separation in oil and gas production.

5. A sand control screen, characterized in that: Comprising the foam metal alloy material as claimed in claim 3.

6. A method for preparing the sand control screen according to claim 5, characterized in that: The following steps are involved: S1. Curling the polyurethane sponge to obtain a cylindrical polyurethane sponge; S2. The cylindrical polyurethane sponge is coated, heat treated in stages, electrodeposited and thermally diffused using the preparation method described in claim 1 or 2 to obtain a sand control screen.

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