Manufacturing method of petroleum accessory platform base

Abstract

The invention discloses a petroleum accessory platform base manufacturing method, and relates to the technical field of petroleum accessories. The manufacturing method of the petroleum accessory platform base comprises the eight steps that nickel Ni, manganese Mn and chromium Cr are added into molten steel for machining the petroleum accessory platform base, the corrosion resistance and the abrasion resistance of steel can be improved by adding nickel into the molten steel, the stability of an austenite structure is improved, the strength, the hardness and the toughness of the steel are improved by adding manganese into the molten steel, and the corrosion resistance and the abrasion resistance of the steel can be improved by adding chromium Cr into the molten steel. Meanwhile, manganese can serve as a desulfurizing agent to help remove sulfur in the molten steel, so that the quality of the steel is improved, chromium is added into the molten steel to form a stable oxidation film, the corrosion resistance of the steel is improved, meanwhile, chromium can improve the wear resistance and the high temperature resistance of the steel, nickel and chromium form a nickel-chromium alloy phase, and the corrosion resistance and the high temperature resistance of the steel are further improved; the functions of high temperature resistance, wear resistance and corrosion resistance of the oil accessory platform base are improved, and the device is convenient to popularize and use.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum accessories, in particular to a method for manufacturing a petroleum accessories platform base. Background Art

[0002] Petroleum accessories can be divided into drilling equipment, completion equipment, oil production equipment, well repair equipment, exploration equipment, seismic exploration equipment, etc. Drilling equipment can be divided into conventional land drilling rigs, offshore drilling rigs, etc. These drilling rigs need to use the platform base for installation during drilling operations, so as to facilitate the subsequent oil extraction operations and ensure the safety and reliability of the installation position when the equipment is running.

[0003] When drilling equipment is performing drilling operations, it needs to use a platform base for installation operations. Among them, the "A high-strength copper alloy material for petroleum engineering equipment and its preparation method" disclosed in the application number "CN108715947A" has solved the various disadvantages of its performance being difficult to meet the needs of high-strength pressure-resistant products for aerospace, wear-resistant products for petroleum engineering equipment, and corrosion-resistant product accessories for marine engineering equipment.

[0004] However, there are still many defects in the actual use of oil accessories platform bases with similar structures, such as: the oil accessories platform base in the prior art is easily affected by the harsh environment, which causes the oil accessories platform base to be corroded, shortens the service life of the oil accessories platform base, reduces the reliability of the device, and is not convenient for the device to be promoted and used. Therefore, a method for manufacturing the oil accessories platform base is needed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a method for manufacturing a petroleum accessory platform base, which solves the existing problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for manufacturing a petroleum accessories platform base, comprising the following steps:

[0007] Step 1, material preparation, the raw materials for preparation are coke, sintered ore, lump ore, and limestone, wherein the proportion of limestone is 5%-10%, and the proportion of limestone can be adjusted according to the proportion of raw materials, so as to facilitate the subsequent smelting of raw materials;

[0008] Step 2: Waste treatment: treatment of harmful substances produced during smelting;

[0009] Step 3: Low carbon treatment: the molten iron undergoes a steelmaking process to reduce the carbon content;

[0010] Step 4: modification treatment, adding nickel Ni, manganese Mn, and chromium Cr to the molten steel to improve the mechanical properties, corrosion resistance, and wear resistance of the steel;

[0011] Step 5: Steel rolling process: the molten steel is stored in the intermediate tank and injected into the crystallizer to solidify into a billet shell;

[0012] Step 6: stamping process, feeding the heated continuous casting billet into the stamping equipment to form it into the shape and size of the oil accessories platform base;

[0013] Step 7: Surface treatment: sandblasting is used to treat the base of the oil accessories platform. Specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform;

[0014] Step 8: Spraying treatment, use polyurethane as primer and choose epoxy waterproof coating for spraying.

[0015] Preferably, in step one, the prepared raw materials are sent into a blast furnace for high-temperature smelting into liquid pig iron, also known as molten iron, and the ferric oxide, sulfur and nitrate produced by processing the liquid pig iron are treated by external equipment.

[0016] Preferably, in step three, excess carbon, sulfur and phosphorus impurities in molten iron and scrap steel are removed and a certain amount of alloy components are added to carry out steelmaking. Steelmaking is an oxidation reaction, which mainly removes excess carbon C in iron Fe to avoid too high C content affecting the toughness of steel. The reaction formula is: C+02=CO2.

[0017] Preferably, in the step 4, nickel Ni, manganese Mn and chromium Cr are respectively added to the molten steel to improve the mechanical properties, corrosion resistance and wear resistance of the steel, wherein the adding method adopts a blowing method, using argon gas to blow the powder containing nickel into the molten steel, the manganese element is added by gas, specifically manganese oxide, into the molten steel, and the chromium is added in the form of ore directly into the molten steel for reaction. The reaction formula of nickel and chromium is: Ni+Cr→NiCr, nickel and chromium form a nickel-chromium alloy phase, which further improves the corrosion resistance and high temperature resistance of the steel. Under normal conditions, during the alloy smelting process of nickel Ni and manganese Mn at high temperature, nickel and manganese interact with each other in the form of alloy elements to form a specific alloy phase.

[0018] Preferably, in step five, the molten alloy steel is stored in an intermediate tank, which helps maintain a constant temperature during the transfer of the molten steel, and then continuously injected into the crystallizer, solidified into a billet shell and pulled out through the crystallizer at a stable speed, and after cooling, cut into continuous casting billets of specified length.

[0019] Preferably, in step six, the temperature of the continuous casting billet reaches the requirements of stamping and forming. It needs to be heated to an appropriate temperature and cut into appropriate specifications according to the required size and shape. The heated continuous casting billet is sent to the stamping equipment to form it into the shape and size of the oil accessories platform base.

[0020] Preferably, in step seven, sandblasting is used to process the base of the oil accessories platform, specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform, and the surface of the base of the oil accessories platform is polished by the impact force of the abrasives. After polishing, the base of the oil accessories platform needs to be further cleaned to ensure the cleanliness of the surface of the base of the oil accessories platform.

[0021] Preferably, in step eight, polyurethane is used as a primer, and the primer and the curing agent are evenly mixed, wherein the mixing ratio of the polyurethane primer to the curing agent is controlled at 4:1 to 6:1, and the primer is evenly sprayed with a spray gun, and an epoxy waterproof coating is selected. After the primer is dry, the epoxy waterproof coating is evenly sprayed with a spray gun, and the epoxy waterproof coating is dried and cured after spraying.

[0022] Preferably, the treatment of harmful substances produced during smelting in step 2 includes the following steps:

[0023] S1. Thermal reduction method: Fe2O3 is reduced to elemental iron through a reduction reaction. Carbon monoxide CO is used as a reducing agent to reduce iron oxide to elemental iron under heating conditions.

[0024] S2, desulfurization treatment, organic sulfur carbonyl sulfide COS, hydrolyzes into hydrogen sulfide H2S and carbon dioxide CO2, and then removes H2S through alkaline washing process. The specific equation is as follows: COS+H2O→H2S+CO2. This reaction is carried out after catalytic hydrolysis of blast furnace gas, and the generated H2S is then removed by spraying sodium hydroxide NaOH solution;

[0025] S3, denitrification treatment, adopts wet scrubbing method, the flue gas after oxidation enters the wet desulfurization tower, in which the flue gas contacts with the spray liquid containing absorbent, and the absorbent can absorb not only SO2, but also NO2-.

[0026] The present invention provides a method for manufacturing a petroleum accessories platform base. Compared with the prior art, it has the following beneficial effects:

[0027] 1. The present invention provides a method for manufacturing a petroleum accessories platform base. Nickel Ni, manganese Mn and chromium Cr are respectively added to molten steel for processing the petroleum accessories platform base to improve the mechanical properties, corrosion resistance and wear resistance of the steel. The addition of nickel to the molten steel can improve the corrosion resistance and wear resistance of the steel and increase the stability of the austenite structure. Manganese is added to the molten steel to improve the strength, hardness and toughness of the steel. At the same time, manganese can also serve as a desulfurizer to help remove sulfur in the molten steel, thereby improving the quality of the steel. A stable oxide film is formed by adding chromium to the molten steel to improve the corrosion resistance of the steel. At the same time, chromium can also improve the wear resistance and high temperature resistance of the steel. The reaction formula of nickel and chromium is: Ni+Cr→NiCr. Nickel and chromium form a nickel-chromium alloy phase, which further improves the corrosion resistance and high temperature resistance of the steel. The function of improving the high temperature resistance, wear resistance and corrosion resistance of the petroleum accessories platform base is achieved, and the problem that the petroleum accessories platform base is damaged, corroded and needs to be frequently replaced due to the restriction of the harsh oil exploitation environment on the petroleum accessories platform base is avoided, and the reliable effect of the device is increased, which is convenient for the device to be promoted and used.

[0028] 2. The present invention provides a method for manufacturing a petroleum accessories platform base, by sandblasting to polish the surface of the petroleum accessories platform base, spraying polyurethane primer and epoxy waterproof coating on the petroleum accessories platform base after polishing, thereby isolating the petroleum accessories platform base from water and moisture, reducing the corrosion rate of the petroleum accessories platform base, and extending the service life of the petroleum accessories platform base. At the same time, the steel plate surface can be protected from oxidation, chemicals and other environmental factors, thereby increasing the practical effect of using the petroleum accessories platform base, achieving the function of extending the service life of the petroleum accessories platform base, and avoiding the petroleum accessories platform base from being corroded by liquids such as water vapor.

[0029] 3. The present invention provides a method for manufacturing a petroleum accessories platform base. The thermal reduction method can be used to facilitate the treatment of ferric oxide produced in steelmaking. The desulfurization treatment can be used to treat harmful gases produced in the processing of the petroleum accessories platform base. The wet desulfurization tower can be used to denitrify the harmful gases, thereby improving the energy-saving and environmental protection function of the device, reducing the environmental pollution caused by the processing of the petroleum accessories platform base, and complying with the concept of green development of society. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the method flow of the present invention;

[0031] Figure 2 It is a schematic diagram of the working principle of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-Figure 2 The present invention provides two technical solutions:

[0035] The first embodiment: a method for manufacturing a petroleum accessories platform base, comprising the following steps:

[0036] The following steps are involved:

[0037] Step 1, material preparation, the raw materials for preparation are coke, sintered ore, lump ore, and limestone, wherein the proportion of limestone is 5%-10%, and the proportion of limestone can be adjusted according to the proportion of raw materials, so as to facilitate the subsequent smelting of raw materials;

[0038] Step 2: Waste treatment: treatment of harmful substances produced during smelting;

[0039] Step 3: Low carbon treatment: the molten iron undergoes a steelmaking process to reduce the carbon content;

[0040] Step 4: modification treatment, adding nickel Ni, manganese Mn, and chromium Cr to the molten steel to improve the mechanical properties, corrosion resistance, and wear resistance of the steel;

[0041] Step 5: Steel rolling process: the molten steel is stored in the intermediate tank and injected into the crystallizer to solidify into a billet shell;

[0042] Step 6: stamping process, feeding the heated continuous casting billet into the stamping equipment to form it into the shape and size of the oil accessories platform base;

[0043] Step 7: Surface treatment: sandblasting is used to treat the base of the oil accessories platform. Specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform;

[0044] Step 8: Spraying treatment, use polyurethane as primer and choose epoxy waterproof coating for spraying.

[0045] The prepared raw materials are sent into a blast furnace for high-temperature smelting into liquid pig iron, also known as molten iron. In the blast furnace, coke burns under oxygen-deficient conditions to produce high temperatures (about 1500-1600 degrees Celsius) and CO gas. The CO gas reacts with iron oxides in the iron ore to reduce it to metallic iron. Limestone decomposes at high temperatures to generate CaO, which reacts with silicates such as silicon dioxide in the charge to form slag. As the reduction reaction proceeds, metallic iron gradually accumulates to form liquid pig iron, known as molten iron, and the ferric oxide, sulfur, and nitrate produced by processing the liquid pig iron are treated through external equipment.

[0046] Remove excess carbon, sulfur and phosphorus impurities from molten iron and scrap steel and add a certain amount of alloy components to make steel. Steelmaking is an oxidation reaction, which mainly removes excess carbon C from iron Fe to avoid excessive C content affecting the toughness of steel. The reaction formula is: C+02=CO2;

[0047] Nickel Ni, manganese Mn, and chromium Cr are added to molten steel respectively to improve the mechanical properties, corrosion resistance, and wear resistance of the steel. The addition method adopts a blowing method, in which argon gas is used to blow nickel-containing powder into the molten steel, so as to facilitate the control of the amount and distribution of nickel added. The addition of nickel to the molten steel can improve the corrosion resistance and wear resistance of the steel and increase the stability of the austenite structure. The manganese element is added by adding gas, specifically manganese oxide, to the molten steel. The addition of manganese to the molten steel is used to improve the strength, hardness, and toughness of the steel. At the same time, manganese can also serve as a desulfurizer to help remove sulfur in the molten steel, thereby improving the quality of the steel;

[0048] Chromium is added directly to molten steel in the form of ore to react. A stable oxide film is formed by adding chromium to the molten steel to improve the corrosion resistance of the steel. Chromium can also improve the wear resistance and high temperature resistance of the steel. The reaction formula of nickel and chromium is: Ni+Cr→NiCr. Nickel and chromium form a nickel-chromium alloy phase, which further improves the corrosion resistance and high temperature resistance of the steel. Under normal conditions, nickel Ni and manganese Mn, as transition metals, will not react chemically in the form of pure elements. During the alloy smelting process at high temperature, nickel and manganese interact with each other in the form of alloy elements to form a specific alloy phase.

[0049] The alloy steel liquid is stored in the intermediate tank, which helps maintain a constant temperature during the transfer process, avoiding temperature fluctuations that cause unstable steel performance. It is then continuously injected into the crystallizer, solidified into a billet shell and pulled out of the crystallizer at a stable speed. After cooling, it is cut into a continuous casting billet of a specified length.

[0050] In order to make the temperature of the continuous casting billet reach the requirements of stamping, it is necessary to heat it to an appropriate temperature and cut the continuous casting billet into appropriate specifications according to the required size and shape. In the cutting operation, a flame cutting machine is used, and oxygen and fuel gas are used as cutting media. A high-temperature flame is generated by igniting a mixture of fuel gas and oxygen to melt the metal on the surface of the billet, thereby achieving cutting. The heated continuous casting billet is fed into the stamping equipment to form it into the shape and size of the oil accessories platform base;

[0051] Sandblasting is used to process the base of the oil accessories platform. Specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform. The impact force of the abrasives is used to grind the surface of the base of the oil accessories platform. After grinding, the base of the oil accessories platform needs to be further cleaned to ensure the cleanliness of the surface of the base of the oil accessories platform.

[0052] Use polyurethane as primer, mix the primer and curing agent evenly, wherein the mixing ratio of polyurethane primer to curing agent is controlled at 4:1 to 6:1, use a spray gun to evenly spray the primer, select epoxy waterproof coating, and after the primer is dry, use a spray gun to evenly spray the epoxy waterproof coating. After spraying, the epoxy waterproof coating is dried and cured. A hot air circulation oven is used for curing, and the coating is heated by circulating hot air. The hot air circulation oven has good temperature uniformity, which is convenient for evenly curing the epoxy waterproof coating.

[0053] The second implementation mode is mainly different from the first implementation mode in that the treatment of harmful substances generated during smelting includes the following steps:

[0054] S1. Thermal reduction method: Fe2O3 is reduced to elemental iron through a reduction reaction. Carbon monoxide CO is used as a reducing agent to reduce iron oxide to elemental iron under heating conditions.

[0055] S2, desulfurization treatment, organic sulfur carbonyl sulfide COS, hydrolyzes into hydrogen sulfide H2S and carbon dioxide CO2, and then removes H2S through alkaline washing process. The specific equation is as follows: COS+H2O→H2S+CO2. This reaction is carried out after catalytic hydrolysis of blast furnace gas, and the generated H2S is then removed by spraying sodium hydroxide NaOH solution;

[0056] S3, denitrification treatment, using wet scrubbing method, the oxidized flue gas enters the wet desulfurization tower, where the flue gas contacts with the spray liquid containing absorbent, and the absorbent can absorb not only SO2, but also NO2-;

[0057] The thermal reduction method can be used to facilitate the treatment of ferric oxide produced in steelmaking, the desulfurization treatment can be used to treat harmful gases produced in the processing of petroleum accessories platform base, and the wet desulfurization tower can be used to denitrify the harmful gases, thereby improving the energy-saving and environmental protection function of the device, reducing the environmental pollution caused by the processing of petroleum accessories platform base, and complying with the concept of green development of society.

[0058] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a petroleum accessories platform base, characterized in that: The following steps are involved: Step 1, material preparation, the raw materials for preparation are coke, sintered ore, lump ore, and limestone, wherein the proportion of limestone is 5%-10%, and the proportion of limestone can be adjusted according to the proportion of raw materials, so as to facilitate the subsequent smelting of raw materials; Step 2: Waste treatment: treatment of harmful substances produced during smelting; Step 3: Low carbon treatment: the molten iron undergoes a steelmaking process to reduce the carbon content; Step 4: modification treatment, adding nickel Ni, manganese Mn, and chromium Cr to the molten steel to improve the mechanical properties, corrosion resistance, and wear resistance of the steel; Step 5: Steel rolling process: the molten steel is stored in the intermediate tank and injected into the crystallizer to solidify into a billet shell; Step 6: stamping process, feeding the heated continuous casting billet into the stamping equipment to form it into the shape and size of the oil accessories platform base; Step 7: Surface treatment: sandblasting is used to treat the base of the oil accessories platform. Specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform; Step 8: Spraying treatment, use polyurethane as primer and choose epoxy waterproof coating for spraying.

2. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In the step 1, the prepared raw materials are sent into a blast furnace for high-temperature smelting into liquid pig iron, also known as molten iron, and the ferric oxide, sulfur and nitrate produced by processing the liquid pig iron are treated by external equipment.

3. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In the step three, excess carbon, sulfur and phosphorus impurities in molten iron and scrap steel are removed and a certain amount of alloy components are added to carry out steelmaking.

4. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In the step 4, nickel Ni, manganese Mn and chromium Cr are respectively added to the molten steel to improve the mechanical properties, corrosion resistance and wear resistance of the steel. The addition method adopts the blowing method, using argon gas to blow the nickel-containing powder into the molten steel. The manganese element is added by gas, specifically manganese oxide, into the molten steel. The chromium is added in the form of ore and directly added to the molten steel for reaction. The reaction formula of nickel and chromium is: Ni+Cr→NiCr. Nickel and chromium form a nickel-chromium alloy phase, which further improves the corrosion resistance and high temperature resistance of the steel. Under normal conditions, during the alloy smelting process of nickel Ni and manganese Mn at high temperature, nickel and manganese interact with each other in the form of alloy elements to form a specific alloy phase.

5. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In step five, the alloy steel liquid is stored in an intermediate tank, which helps maintain a constant temperature during the transfer of the steel liquid. The alloy steel liquid is then continuously injected into the crystallizer, solidified into a billet shell, and pulled out through the crystallizer at a stable speed. After cooling, the billet is cut into a specified length of continuous casting billet.

6. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In step six, the temperature of the continuous casting billet reaches the requirements of stamping and forming. It is necessary to heat it to an appropriate temperature and cut it into appropriate specifications according to the required size and shape. The heated continuous casting billet is sent to the stamping equipment to form it into the shape and size of the oil accessories platform base.

7. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In the step seven, sandblasting is used to process the base of the oil accessories platform. Specifically, compressed air is used as the power to spray abrasives at high speed onto the surface of the base of the oil accessories platform. The surface of the base of the oil accessories platform is polished by the impact force of the abrasives. After polishing, the base of the oil accessories platform needs to be further cleaned.

8. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: In the step eight, polyurethane is used as a primer, and the primer and the curing agent are evenly mixed, wherein the mixing ratio of the polyurethane primer to the curing agent is controlled at 4:1 to 6:1, and the primer is evenly sprayed with a spray gun. Epoxy waterproof coating is selected, and after the primer is dry, the epoxy waterproof coating is evenly sprayed with a spray gun. The epoxy waterproof coating is dried and cured after spraying.

9. The method for manufacturing a petroleum accessories platform base according to claim 1, characterized in that: The treatment of harmful substances produced during smelting in step 2 includes the following steps: S1. Thermal reduction method: Fe2O3 is reduced to elemental iron through a reduction reaction. Carbon monoxide CO is used as a reducing agent to reduce iron oxide to elemental iron under heating conditions. S2, desulfurization treatment, organic sulfur carbonyl sulfide COS, hydrolyzes into hydrogen sulfide H2S and carbon dioxide CO2, and then removes H2S through alkaline washing process. The specific equation is as follows: COS+H2O→H2S+CO2. This reaction is carried out after catalytic hydrolysis of blast furnace gas, and the generated H2S is then removed by spraying sodium hydroxide NaOH solution; S3, denitrification treatment, using wet scrubbing method, the oxidized flue gas enters the wet desulfurization tower, where The flue gas contacts the spray liquid containing absorbent, and the absorbent reacts to absorb not only SO2 but also NO2-.

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