CN2639506Y

CN2639506Y - Petroleum pipeline coated with alloy coat

Info

Publication number: CN2639506Y
Application number: CN 03270607
Authority: CN
Inventors: 马长虹; 张洪军; 蒋贤儒; 王洪达
Original assignee: 马长虹
Priority date: 2003-08-12
Filing date: 2003-08-12
Publication date: 2004-09-08
Anticipated expiration: 2013-08-12

Abstract

The utility model belongs to the plating field of metallic material, which relates to a petroleum pipeline coated with alloy for drilling, extracting, collecting and delivering petroleum in petroleum industry. The utility model comprises pipe ends, a pipe body and a coupling, wherein the inner wall of the pipe body is coated with a layer of inner wall leak layer, and the surface of the outer wall of the pipe body is orderly coated with outer wall coating layers. The surface of the inner wall leak layer is orderly coated with inner wall alloy leak layers. The utility model reinforces mechanical performance, such as intensity, rigidity, etc. and has the advantages of high temperature resistance, high pressure resistance, high bacterium resistance, high mineralization resistance, high corrosion resistance and strong suspension loading capability. The utility model can carry out coating processing with a single function or multiple functions according to needs. The utility model also has the advantages of low cost, long service life, economy and practicability. The utility model is suitable for protection processing for various petroleum pipes, sleeve pipes and pipelines which are used for delivering gas, water and oil, injecting the water, extracting the oil, cementing a well, drilling the well, etc. and used for gathering, heating, a boiler, etc. in an oil field.

Description

Ooze and be laminated with the metal and stone oil-piping

Technical field

The utility model belongs to the plating field of metal material, relates to a kind of petroleum industry drilling, defeated the oozing of usefulness of collection is laminated with the metal and stone oil-piping.

Background technology

At present, be applied in the various pipelines in the petroleum industry, oil pipe, sleeve pipe and pipelines such as the gas transmission of using as the oil field, water delivery, oil transportation, well cementation, oil recovery, water filling have coated pipe, lining pipe, coating pipe, infiltration layer pipe, and these pipeline ubiquities a. inside coating stifled water-filling nozzle of holddown that easily comes off; B. the two-layer skin of lining pipe can not be lowered to instrument in the pipe, can not salvage; C. the coating pipe has pin hole, and quality is difficult for protecting; D. nitriding pipe hardness height, instrument is difficult for supporting, and there is micro-crack on the surface, is difficult for using in deep-well; And it is big all to exist price life-span ratio, and particularly old pipeline can not be filled and led up existing pit when repairing, and makes weakness can not get strengthening degradation deficiency under performance during high temperature.

Summary of the invention

The purpose of this utility model is to avoid weak point of the prior art and provides a kind of high temperature resistant, and price is low, long service life, and economical and practical oozing is laminated with the metal and stone oil-piping.

The technical solution adopted in the utility model: a kind of oozing is laminated with the metal and stone oil-piping, comprise pipe end, body, box cupling, inboard wall of tube body oozes and is covered with one deck inwall infiltration layer, and the tube wall surface is coated with the outer wall coating successively, and the inwall layer surface is oozed successively and is covered with the inwall alloyed layer.The outer wall coating comprises two-layer above coat, is any or its combination in organic coating, inorganic coating, powder coating, titanium nano coating, the alloy high-temp fusing method and equipment for coating of coil and stsip.Described inwall infiltration layer is any or its combination in nickel, aluminium, boron, chromium, titanium, cobalt, manganese, carbon, nitrogen, the fluorine.Described inwall alloyed layer comprises oozes coating more than two-layer, is any or its combination in iron, aluminium, chromium, nickel, titanium, zinc, manganese, molybdenum, magnesium, tungsten, fluorine, silicon, boron, the carbon-coating.Described body two ends groove chamfering and the welding of pipe nipple two ends groove chamfering, pipe nipple and groove chamfering are coated with outer wall coating and inwall alloyed layer; Described pipe nipple diameter is identical with body with wall thickness, and pipe nipple is any or its combination in iron, carbon, aluminium, chromium, nickel, phosphorus, titanium, boron, zinc, copper, cobalt, the fluorine.

The positive beneficial effect that the utility model had:

1. adopt to ooze to be coated with combination, can carry out the processing of single function or multi-functional coatings as required, with strong points, the price life-span can not caused waste than low;

2. the box cupling internal thread is after oozing processing, the physical dimension no change, and mechanical performances such as intensity, hardness increase, can avoid the damage of screw thread, have prolonged the application life of the weak part of body;

3. pipe nipple makes the whole piece long-distance pipe become the alloy pipeline by the ordinary steel pipeline to postwelding, is the alloy pipeline that less input obtains high-quality, high-strength omnidistance low price, and is economical and practical;

4. high temperature resistant, high pressure, high bacterium, high salinity, high erosion and superpower outstanding loading capability are suitable for the protection processing of various oil pipes such as gas transmission, water delivery, oil transportation, water filling, oil recovery, well cementation, drilling well, the collection used in the oil field are defeated, heating, boiler, sleeve pipe, pipeline.

Description of drawings

Fig. 1 is the utility model embodiment 1 structural representation;

Fig. 2 is a tube wall stratiform structural representation of the present utility model;

Fig. 3 is the utility model embodiment 2 structural representations.

The specific embodiment

Embodiment 1

Consult shown in Figure 1, a kind of oozing is laminated with the metal and stone oil-piping, be the box cupling thread joined structure, mainly comprise pipe end 1, outer wall coating 2, body 3, inwall infiltration layer 4, inwall alloyed layer 5, box cupling 6, two pipe ends 1 of its body 3 are provided with external screw thread, with box cupling 6 screw-internal thread fit, box cupling 6 is used for adjacent body 3 spreadings and connects; Body 3 outer wall surface are coated with outer wall coating 2 successively, and body 3 inwalls ooze and are covered with one deck inwall infiltration layer 4, and inwall infiltration layer 4 surfaces are oozed successively and are covered with inwall alloyed layer 5.

Consult shown in Figure 2ly, described body 3 outer wall coatings 2 comprise 201,202,203 3 layers of coat, are any or its combination in organic coating, inorganic coating, powder coating, titanium nano coating, the alloy high-temp fusing method and equipment for coating of coil and stsip; Alloyed layer 4 surperficial coated inwall alloyed layer 5 on described body 3 inwalls comprise that 501,502,503 3 layers ooze coating, are any or its combination in iron, aluminium, chromium, nickel, titanium, zinc, manganese, molybdenum, magnesium, tungsten, fluorine, silicon, boron, the carbon-coating; Described body 3 inwall infiltration layers 4 are one deck, are any or its combination in nickel, aluminium, boron, chromium, titanium, cobalt, manganese, carbon, nitrogen, the fluorine.

6 of described box cuplings carry out 201,202,203 3 layers of outer wall coatings and interior cemented alloy layer 503 one decks are handled.

The coating method that oozes of the present utility model:

Body 3 outer walls are carried out three layers of coating: a, soluble coating is toasted 30-120 minute film-forming at 150-250 ℃ with organic solvent dissolution after static or pneumatic spraying, 1 to 3 circulation is wanted in outer wall spraying and curing, every circulation thickness is greater than 15um, more than the coating layer thickness 45um; B, powdery paints heating-up temperature 30-180 ℃, adsorb thickness between 50-1000um by with body heating back absorption; C, alloy coat are sent to surface to be coated with by the wire feed machine with the alloy silk, through the melt and dissolved one-tenth alloy liquid in electric arc heated to the 4000 ℃ left and right sides after high wind high pressure, atomizing spraying to outer surface of tube body, thickness is at 0.1-4mm; The material of alloy coat is identical with the inwall alloy-layer.

Body 3 inwall alloyed layer 5 are carried out three layers oozes and cover: inwall oozes one deck infiltration layer 4 earlier, apply three-layer alloy layer 5 again on infiltration layer 4 surfaces, first floor 501 is for oozing coat, have and be coated with in oozing, be coated with, ooze, the second layer 502 is envelope pin hole high-mechanical property alloy-coated layer, the 3rd layer 503 for being fit to the alloy-coated layer of a certain block down-hole service condition, the inwall alloy-layer is any or its combination more than two kinds in iron, aluminium, chromium, nickel, titanium, zinc, manganese, molybdenum, magnesium, tungsten, fluorine, silicon, boron, the carbon, each layer alloying layer thickness is more than the 4um, and oozing temperature is more than 400 ℃.

Embodiment 2

Consult shown in Figure 3, be pipe nipple welding draw bail, its pipe nipple 7 is an alloy material: any or its combination in iron, carbon, aluminium, chromium, nickel, phosphorus, titanium, boron, zinc, copper, cobalt, the fluorine, pipe nipple 7 length are more than the 30mm, diameter is identical with body 3 with wall thickness, body 3 two ends and pipe nipple 7 two ends are provided with the groove chamfering 8 of 60 degree, and groove chamfering 8 places adopt the butt joint welding that pipe nipple 7 is connected with body 3 spreadings; Described pipe nipple 7 and groove chamfering 8 all carry out 201,202,203 3 layers of outer wall coatings and the inwall alloyed layer is oozed the coating processing for 501,502,503 3 layers.It oozes coating method with embodiment 1.

Body 3 of the present utility model can be oil pipe, sleeve pipe, sucker rod, drilling rod and the steel pipe of carrying various media, weld the pipeline of growth distances by box cupling 6 thread connection or pipe nipple 7.

The internal and external screw thread tooth form of box cupling 6 of the present utility model, body 3 can be tapered, square, ladder type, triangular form.

Claims

1. one kind oozes and is laminated with the metal and stone oil-piping, comprise pipe end, body, box cupling, inboard wall of tube body oozes and is covered with one deck inwall infiltration layer, it is characterized in that body (3) outer wall surface is coated with outer wall coating (2) successively, and inwall infiltration layer (4) surface is oozed successively and is covered with inwall alloyed layer (5).

2. according to claim 1 oozing is laminated with the metal and stone oil-piping, it is characterized in that outer wall coating (2) comprises (201), (202), (203) two-layer above coat, be any or its combination in organic coating, inorganic coating, powder coating, titanium nano coating, the alloy high-temp fusing method and equipment for coating of coil and stsip.

3. according to claim 1 oozing is laminated with the metal and stone oil-piping, it is characterized in that described inwall infiltration layer (4) is any or its combination in the nickel, aluminium, boron, chromium, titanium, cobalt, manganese, carbon, nitrogen, fluorine.

4. according to claim 1 oozing is laminated with the metal and stone oil-piping, it is characterized in that described inwall alloyed layer (5) comprises that (501), (502), (503) ooze coating more than two-layer, be any or its combination in iron, aluminium, chromium, nickel, titanium, zinc, manganese, molybdenum, magnesium, tungsten, fluorine, silicon, boron, the carbon-coating.

5. be laminated with the metal and stone oil-piping according to claim 1 or 2 or 4 described oozing, it is characterized in that described body (3) two ends groove chamferings (8) and pipe nipple (7) two ends groove chamferings (8) welding, pipe nipple (7) and groove chamfering (8) are coated with outer wall coating (201), (202), (203) and inwall alloyed layer (501), (502), (503); Described pipe nipple (7) diameter is identical with body (3) with wall thickness, and pipe nipple (7) is any or its combination in iron, carbon, aluminium, chromium, nickel, phosphorus, titanium, boron, zinc, copper, cobalt, the fluorine.