CN112901086A - Erosion-resistant composite aluminum alloy drill rod and manufacturing process thereof - Google Patents
Erosion-resistant composite aluminum alloy drill rod and manufacturing process thereof Download PDFInfo
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- CN112901086A CN112901086A CN202110160858.4A CN202110160858A CN112901086A CN 112901086 A CN112901086 A CN 112901086A CN 202110160858 A CN202110160858 A CN 202110160858A CN 112901086 A CN112901086 A CN 112901086A
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 142
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 106
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 85
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010937 tungsten Substances 0.000 claims abstract description 16
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 15
- 239000011574 phosphorus Substances 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 17
- 238000009713 electroplating Methods 0.000 claims description 15
- 239000010410 layer Substances 0.000 description 72
- 238000005299 abrasion Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses an erosion-resistant composite aluminum alloy drill pipe and a manufacturing process thereof, and the erosion-resistant composite aluminum alloy drill pipe comprises an aluminum alloy drill pipe body, wherein the inner surface and the outer surface of the aluminum alloy drill pipe body are respectively coated with an erosion-resistant material layer, and the erosion-resistant material layer is a nickel-based alloy containing tungsten, phosphorus and silicon; according to the mass fraction, the erosion-resistant material layer contains 4-8% of tungsten, 6-10% of phosphorus, 7-10% of silicon and the balance of nickel. The invention can effectively improve the erosion resistance of the surface of the drill pipe body, reduce the risk of erosion damage of the drill pipe and prolong the service life of the aluminum alloy drill pipe.
Description
Technical Field
The invention relates to the technical field of aluminum alloy drill rods used in oil-gas exploration and development processes, in particular to an erosion-resistant composite aluminum alloy drill rod and a manufacturing process thereof.
Background
In petroleum, natural gas, geological and geothermal drilling operations, the aluminum alloy drill rod is light in weight, high in strength and low in elastic modulus, so that the aluminum alloy drill rod is widely applied to ultra-deep wells, extended reach wells, well cementation and well repair operations, particularly the weight of the drill rod can be obviously reduced, the function of drilling deep wells by a small drilling machine is realized, and the production cost is obviously reduced. However, the aluminum alloy drill pipe has low hardness of material, usually only about HB200, and therefore has low wear resistance and erosion resistance. In the drill pipe and the annular space between the drill pipe and the well wall, solid-phase particles contained in the drilling fluid flowing at a high speed easily cause erosion or wear to the body resistance of the drill pipe.
Aiming at the abrasion problem of the aluminum alloy drill pipe, the abrasion problem of the outer surface of the aluminum alloy drill pipe can be effectively relieved by welding an abrasion-resistant belt or increasing an abrasion-resistant component at the middle thickened part of a drill pipe body on a drill pipe joint at present, but the problems of erosion of the inner wall of the drill pipe and erosion of the outer surface of the drill pipe are not effectively solved.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an erosion-resistant composite aluminum alloy drill rod and a manufacturing process thereof, which can effectively improve the erosion resistance of the surface of a drill rod pipe body, reduce the risk of erosion damage of the drill rod and prolong the service life of the aluminum alloy drill rod.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an erosion-resistant composite aluminum alloy drill pipe comprises an aluminum alloy drill pipe body, wherein an erosion-resistant material layer is coated on the inner surface and the outer surface of the aluminum alloy drill pipe body respectively, and the erosion-resistant material layer is a nickel-based alloy containing tungsten, phosphorus and silicon;
according to the mass fraction, the erosion-resistant material layer contains 4-8% of tungsten, 6-10% of phosphorus, 7-10% of silicon and the balance of nickel.
Further, the thickness of the erosion-resistant material layer is 40 um-80 um.
Further, the erosion resistant material layer has a hardness greater than HV0.1700。
Further, the bonding strength between the erosion-resistant material layer and the inner surface and the outer surface of the aluminum alloy drill pipe body is larger than 300 MPa.
Further, the erosion wear rate of the erosion-resistant material layer is larger than 10L/um by adopting a shakeout method.
Furthermore, one end of the aluminum alloy drill pipe body is connected with a first drill pipe joint, the other end of the aluminum alloy drill pipe body is connected with a second drill pipe joint, the first drill pipe joint is an external thread joint, and the second drill pipe joint is an internal thread joint.
A manufacturing process of an erosion-resistant composite aluminum alloy drill rod is characterized in that an erosion-resistant material layer is compounded on the inner surface and the outer surface of a pipe body of the aluminum alloy drill rod in an electroplating mode.
Further, the electroplating temperature of the erosion-resistant material layer is 70-90 ℃.
Further, after the erosion-resistant material layer is electroplated on the inner surface and the outer surface of the aluminum alloy drill pipe body, the whole body is heated to 220-250 ℃, and the temperature is kept for 2 hours.
Further, after the erosion-resistant material layer is electroplated on the inner surface and the outer surface of the aluminum alloy drill pipe body, one end of the aluminum alloy drill pipe body is connected with the first drill pipe joint, and the other end of the aluminum alloy drill pipe body is connected with the second drill pipe joint.
Compared with the prior art, the invention has at least the following beneficial effects: according to the erosion-resistant composite aluminum alloy drill rod provided by the invention, the inner surface and the outer surface of the aluminum alloy drill rod pipe body are subjected to surface treatment, the inner surface and the outer surface of the aluminum alloy drill rod pipe body are respectively coated with a compact erosion-resistant material layer containing tungsten, phosphorus and silicon, the erosion-resistant material layer contains 4% -8% of tungsten, 6% -10% of phosphorus, 7% -10% of silicon and the balance of nickel, so that the erosion resistance of the aluminum alloy drill rod in the use process can be effectively improved, the safety reliability of the aluminum alloy drill rod is improved, and the service life of the aluminum alloy drill rod is prolonged.
Further, the thickness of the erosion-resistant material layer is 40-80 um, the reasonable matching of the binding force and the erosion resistance of the plating layer is fully considered, the thickness of the erosion-resistant material layer is too thin and weak in erosion resistance, and the thickness of the erosion-resistant material layer is too thick, so that the erosion-resistant material layer is easy to crack, and the risk of peeling off from the substrate is increased.
Further, due to the addition of silicon element, the hardness of the erosion resistant material layer is made greater than HV0.1700, erosion resistance is significantly multiplied.
Furthermore, the bonding strength between the erosion-resistant material layer and the inner surface and the outer surface of the aluminum alloy drill pipe body is more than 300MPa, the bonding strength between the erosion-resistant material layer and the aluminum alloy drill pipe body is better, but the bonding strength is higher, the process and the working procedure are more complex, and the production cost is higher; below this strength, the coating risks flaking during use.
Furthermore, the erosion wear rate of the erosion-resistant material layer by adopting a shakeout method is more than 10L/um, the erosion wear rate is far higher than the 10L/um of the existing organic coating standard, and the erosion-resistant material layer has better erosion resistance.
The invention relates to a manufacturing process of an erosion-resistant composite aluminum alloy drill pipe, which is characterized in that an erosion-resistant material layer is compounded on the inner surface and the outer surface of a pipe body of an aluminum alloy drill pipe in an electroplating mode, the electroplating temperature of the erosion-resistant material layer is 70-90 ℃, after the erosion-resistant material layer is electroplated on the inner surface and the outer surface of the pipe body of the aluminum alloy drill pipe, the whole pipe body is heated to 220-250 ℃, and the temperature is kept for 2h, so that hydrogen permeating into a plating layer and a surface layer of a matrix in the electroplating process is effectively removed, the hydrogen escapes from the pipe body, the hydrogen damage of the pipe body is prevented.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an erosion-resistant composite aluminum alloy drill pipe of the present invention.
1-an aluminum alloy drill pipe body; 2-an erosion resistant material layer; 3-a first pipe joint; 4-second tool joint.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the erosion-resistant composite aluminum alloy drill pipe comprises an aluminum alloy drill pipe body 1, wherein one end of the aluminum alloy drill pipe body 1 is connected with a first drill pipe joint 3 through threads, the other end of the aluminum alloy drill pipe body is connected with a second drill pipe joint 4 through threads, the first drill pipe joint 3 is an external thread joint, and the second drill pipe joint 4 is an internal thread joint.
The inner surface and the outer surface of the aluminum alloy drill pipe body 1 are respectively coated with erosion resistant material layers 2, and the erosion resistant material layers 2 are nickel-based alloys containing tungsten, phosphorus and silicon.
The erosion-resistant material layer 2 contains 4-8% of tungsten, 6-10% of phosphorus, 7-10% of silicon and the balance of nickel by mass.
The thickness of the erosion-resistant material layer 2 is 40um to 80 um.
The hardness of the erosion-resistant material layer 2 is greater than HV0.1700。
The bonding strength between the erosion-resistant material layer 2 and the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is more than 300 MPa.
The erosion wear rate of the erosion-resistant material layer 2 by adopting a shakeout method is more than 10L/um.
The invention relates to a manufacturing process of an erosion-resistant composite aluminum alloy drill rod, which comprises the following steps:
compounding the erosion-resistant material layer 2 on the inner surface and the outer surface of the aluminum alloy drill pipe body 1 in an electroplating mode, wherein the electroplating temperature of the erosion-resistant material layer 2 is 70-90 ℃;
after the inner surface and the outer surface of the aluminum alloy drill pipe body 1 are electroplated with the erosion-resistant material layer 2, the whole body is heated to 220-250 ℃, and the temperature is kept for 2 h;
and finally, connecting one end of the aluminum alloy drill pipe body 1 with a first drill pipe joint 3 through a thread, connecting the other end of the aluminum alloy drill pipe body with a second drill pipe joint 4 through a thread, wherein the first drill pipe joint 3 is an external thread joint, and the second drill pipe joint 4 is an internal thread joint, and finally assembling to obtain a complete erosion-resistant composite aluminum alloy drill pipe as shown in figure 1.
The present invention is explained in more detail below with reference to specific examples.
Example 1:
the invention discloses an erosion-resistant composite aluminum alloy drill rod, which comprises an aluminum alloy drill rod pipe body 1, wherein one end of the aluminum alloy drill rod pipe body 1 is connected with a first drill rod joint 3 through threads, the other end of the aluminum alloy drill rod pipe body 1 is connected with a second drill rod joint 4 through threads, the first drill rod joint 3 is an external thread joint, and the second drill rod joint 4 is an internal thread joint.
The inner surface and the outer surface of the aluminum alloy drill pipe body 1 are respectively coated with erosion resistant material layers 2, and the erosion resistant material layers 2 are nickel-based alloys containing tungsten, phosphorus and silicon.
The erosion-resistant material layer 2 contains, by mass fraction, 6% of tungsten, 8% of phosphorus, 9% of silicon, and the balance nickel.
The erosion resistant material layer 2 has a thickness of 60 um.
The electroplating temperature of the erosion-resistant material layer 2 is 85 ℃;
after the inner surface and the outer surface of the aluminum alloy drill pipe body 1 are electroplated with the erosion-resistant material layer 2, the whole body is heated to 240 ℃, and the temperature is kept for 2 hours;
the hardness of the erosion-resistant material layer 2 after the process is detected to be HV0.1780。
The bonding strength between the erosion-resistant material layer 2 and the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is 328 MPa.
The erosion wear rate of the erosion-resistant material layer 2 by adopting a shakeout method is 16L/um.
And finally, connecting one end of the aluminum alloy drill pipe body 1 with a first drill pipe joint 3 through a thread, connecting the other end of the aluminum alloy drill pipe body with a second drill pipe joint 4 through a thread, wherein the first drill pipe joint 3 is an external thread joint, and the second drill pipe joint 4 is an internal thread joint, and finally assembling to obtain a complete erosion-resistant composite aluminum alloy drill pipe as shown in figure 1.
Example 2:
the composite aluminum alloy drill rod resistant to erosion in the embodiment is different from the composite aluminum alloy drill rod in the embodiment 1 in the following points:
the erosion-resistant material layer 2 contains, by mass fraction, 4% of tungsten, 10% of phosphorus, 8% of silicon, and the balance nickel.
The thickness of the erosion-resistant material layer 2 is 40 um.
The electroplating temperature of the erosion-resistant material layer 2 is 90 ℃;
after the inner surface and the outer surface of the aluminum alloy drill pipe body 1 are electroplated with the erosion-resistant material layer 2, the whole body is heated to 220 ℃, and the temperature is kept for 2 hours;
the hardness of the erosion-resistant material layer 2 after the process is detected to be HV0.1700。
The bonding strength between the erosion-resistant material layer 2 and the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is 312 MPa.
The erosion wear rate of the erosion-resistant material layer 2 by adopting a shakeout method is 10.5L/um.
The manufacturing process of the erosion-resistant composite aluminum alloy drill rod of the embodiment is different from that of the embodiment 1 in the following points:
the erosion-resistant material layer 2 has low tungsten content and silicon content, the erosion-resistant material layer 2 has low hardness, and the erosion-resistant wear rate is lower.
Example 3:
the composite aluminum alloy drill rod resistant to erosion in the embodiment is different from the composite aluminum alloy drill rod in the embodiment 1 in the following points:
the erosion-resistant material layer 2 contains 8% of tungsten, 6% of phosphorus, 7% of silicon and the balance of nickel by mass.
The thickness of the erosion-resistant material layer 2 is 80 um.
The electroplating temperature of the erosion-resistant material layer 2 is 70 ℃;
after the inner surface and the outer surface of the aluminum alloy drill pipe body 1 are electroplated with the erosion-resistant material layer 2, the whole body is heated to 250 ℃, and the temperature is kept for 2 hours;
the hardness of the erosion-resistant material layer 2 after the process is detected to be HV0.1730。
The bonding strength between the erosion-resistant material layer 2 and the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is 302 MPa.
The erosion wear rate of the erosion-resistant material layer 2 by adopting a shakeout method is 15L/um.
And finally, connecting one end of the aluminum alloy drill pipe body 1 with a first drill pipe joint 3 through a thread, connecting the other end of the aluminum alloy drill pipe body with a second drill pipe joint 4 through a thread, wherein the first drill pipe joint 3 is an external thread joint, and the second drill pipe joint 4 is an internal thread joint, and finally assembling to obtain a complete erosion-resistant composite aluminum alloy drill pipe as shown in figure 1.
The manufacturing process of the erosion-resistant composite aluminum alloy drill rod of the embodiment is different from that of the embodiment 1 in the following points:
the temperature of electroplating is low, and the bonding strength of the erosion-resistant material layer 2 compounded on the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is low.
Example 4:
the composite aluminum alloy drill rod resistant to erosion in the embodiment is different from the composite aluminum alloy drill rod in the embodiment 1 in the following points:
the erosion-resistant material layer 2 contains, by mass fraction, 4% of tungsten, 6% of phosphorus, 10% of silicon, and the balance nickel.
The thickness of the erosion-resistant material layer 2 is 40 um.
The electroplating temperature of the erosion-resistant material layer 2 is 70 ℃;
after the inner surface and the outer surface of the aluminum alloy drill pipe body 1 are electroplated with the erosion-resistant material layer 2, the whole body is heated to 220 ℃, and the temperature is kept for 2 hours;
the hardness of the erosion-resistant material layer 2 after the process is detected to be HV0.1710。
The bonding strength between the erosion-resistant material layer 2 and the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is 305 MPa.
The erosion wear rate of the erosion-resistant material layer 2 by adopting a shakeout method is 12L/um.
And finally, connecting one end of the aluminum alloy drill pipe body 1 with a first drill pipe joint 3 through a thread, connecting the other end of the aluminum alloy drill pipe body with a second drill pipe joint 4 through a thread, wherein the first drill pipe joint 3 is an external thread joint, and the second drill pipe joint 4 is an internal thread joint, and finally assembling to obtain a complete erosion-resistant composite aluminum alloy drill pipe as shown in figure 1.
The manufacturing process of the erosion-resistant composite aluminum alloy drill rod of the embodiment is different from that of the embodiment 1 in the following points:
the temperature of electroplating is low, the bonding strength of the erosion-resistant material layer 2 compounded on the inner surface and the outer surface of the aluminum alloy drill pipe body 1 is low, and the erosion resistance is low.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The composite aluminum alloy drill pipe with erosion resistance is characterized by comprising an aluminum alloy drill pipe body (1), wherein an erosion-resistant material layer (2) is coated on the inner surface and the outer surface of the aluminum alloy drill pipe body (1) respectively, and the erosion-resistant material layer (2) is a nickel-based alloy containing tungsten, phosphorus and silicon;
according to the mass fraction, the erosion-resistant material layer (2) contains 4-8% of tungsten, 6-10% of phosphorus, 7-10% of silicon and the balance of nickel.
2. The erosion-resistant composite aluminum alloy drill pipe as recited in claim 1, characterized in that the thickness of the erosion-resistant material layer (2) is 40-80 um.
3. An erosion-resistant composite aluminium alloy drill pipe according to claim 1, characterized in that the hardness of the erosion-resistant material layer (2) is greater than HV0.1700。
4. An erosion-resistant composite aluminium alloy drill pipe according to claim 1, characterized in that the bonding strength between the erosion-resistant material layer (2) and the inner and outer surfaces of the aluminium alloy drill pipe body (1) is greater than 300 MPa.
5. The erosion-resistant composite aluminum alloy drill pipe as recited in claim 1, characterized in that the erosion wear rate of the erosion-resistant material layer (2) is greater than 10L/um by adopting a shakeout method.
6. The erosion-resistant composite aluminum alloy drill pipe as claimed in claim 1, wherein one end of the aluminum alloy drill pipe body (1) is connected with a first drill pipe joint (3), the other end of the aluminum alloy drill pipe body is connected with a second drill pipe joint (4), the first drill pipe joint (3) is an external thread joint, and the second drill pipe joint (4) is an internal thread joint.
7. The manufacturing process of the erosion-resistant composite aluminum alloy drill pipe as claimed in any one of claims 1 to 6, wherein the erosion-resistant material layer (2) is compounded on the inner surface and the outer surface of the aluminum alloy drill pipe body (1) in an electroplating mode.
8. The manufacturing process of the erosion-resistant composite aluminum alloy drill pipe as claimed in claim 7, wherein the electroplating temperature of the erosion-resistant material layer (2) is 70-90 ℃.
9. The manufacturing process of the erosion-resistant composite aluminum alloy drill pipe as claimed in claim 7, wherein the inner surface and the outer surface of the aluminum alloy drill pipe body (1) are plated with the erosion-resistant material layer (2) and then are integrally heated to 220-250 ℃ and kept warm for 2 hours.
10. The manufacturing process of the erosion-resistant composite aluminum alloy drill pipe as claimed in claim 7, wherein after the erosion-resistant material layer (2) is electroplated on the inner surface and the outer surface of the aluminum alloy drill pipe body (1), one end of the aluminum alloy drill pipe body (1) is connected with the first drill pipe joint (3), and the other end of the aluminum alloy drill pipe body is connected with the second drill pipe joint (4).
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WO2023207118A1 (en) * | 2022-04-28 | 2023-11-02 | 中国石油天然气集团有限公司 | Composite bimetal drill pipe and preparation method therefor |
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