CN114688383A - Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline - Google Patents
Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline Download PDFInfo
- Publication number
- CN114688383A CN114688383A CN202210339663.0A CN202210339663A CN114688383A CN 114688383 A CN114688383 A CN 114688383A CN 202210339663 A CN202210339663 A CN 202210339663A CN 114688383 A CN114688383 A CN 114688383A
- Authority
- CN
- China
- Prior art keywords
- lining hose
- lining
- resistant
- pressure
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 claims abstract description 26
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 19
- 230000008439 repair process Effects 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000007781 pre-processing Methods 0.000 claims abstract description 3
- 238000009941 weaving Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 12
- 239000004698 Polyethylene Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 6
- 238000005536 corrosion prevention Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 230000009545 invasion Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 102100037978 InaD-like protein Human genes 0.000 description 2
- 101150003018 Patj gene Proteins 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1651—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being everted
Abstract
The invention discloses an anti-corrosion repair method for a temperature-resistant pressure-resistant composite pipe lined in an oil-gas-water mixed transportation pipeline, which mainly relates to the technical field of pipeline repair; the method comprises the following steps: s1, manufacturing a lining hose; s2, preparing an adhesive; s3, preprocessing the interior of the pipeline; s4, weaving a flat belt in the lining hose in a penetrating manner, keeping the flat belt in the lining hose from twisting all the time, filling the adhesive into the lining hose, and avoiding air filling in the process of filling the adhesive; s5, connecting the head end of the lining hose soaked with the adhesive with a braided flat belt pre-wound on a rotating shaft of the turner, spirally winding the lining hose on the rotating shaft of the turner, locking the tail end of the lining hose on an outlet pipe seat of the turner, and performing lining turning construction on the lining hose; s6, pressing, curing and connecting lining pipe sections; the method can make up the defects of the prior art, and the pipeline repaired by the method has the advantages of stable performance, high temperature resistance, pressure resistance, wear resistance, long service life, safety and reliability.
Description
Technical Field
The invention relates to the technical field of corrosion prevention and repair in pipelines, in particular to a corrosion prevention and repair method for a temperature-resistant pressure-resistant composite pipe of an inner lining of an oil-gas-water mixed transportation pipeline.
Background
The oil field adopts a steel pipeline to convey fluid, which is the safest, most convenient and cheapest conveying method. With the oil field entering into the ultra-high water content production period, the comprehensive water content reaches more than 95%, and the gathering and transportation system becomes a high oil content sewage system, and the following problems mainly exist in the using process:
1. hypersalinity effects: the high salinity of the produced liquid of the oil layer aggravates the electrochemical reaction in the pipeline, and the produced liquid also contains CO2、H2Acidic substances such as S and the like can often cause corrosion and scaling of the inner wall of the pipeline used in the oil field to different degrees, so that the service life of the pipeline is greatly shortened. The internal corrosion can cause the pipe wall to become thin, even the perforation leaks, and finally the pipeline fails, so that not only can huge economic loss and resource waste be caused, but also the conveying medium leaked from the perforation can cause serious environmental pollution, and the leakage of the oil gas pipeline can even cause the occurrence of explosion accidents;
2. high flow rate effects: most of domestic oil fields have entered the production period of extra-high water content, the comprehensive water content reaches more than 95%, a large-displacement oil-well pump or electric submersible pump well extract is needed to maintain the yield, and the well liquid volume of part of electric pumps reaches 450m3More than d, phi 89mm multiplied by 4.5mm on the ground, more than 1m/s of liquid flow rate, serious abrasion of produced liquid to the pipeline along with formation sand, obvious sand grooves at the bottom of the front-end pipeline, further reducing the service life of the pipeline;
3. high temperature impact: in order to solve the problem of internal corrosion of oil-gas-water pipelines, the most internal corrosion prevention process adopted by the steel pipelines of oil fields at present is to prevent corrosion by coatings such as epoxy powder, epoxy glass flakes and the like, but the wellhead temperature of the produced fluid of the electric submersible pump well is generally over 80 ℃, the temperature of part of wellheads of the electric submersible pump well reaches 95 ℃, and high temperature causes the falling off of a protective layer in the oil well pipeline and aggravates corrosion;
4. the existing internal defense process has the prominent problems that: at present, the most internal corrosion prevention processes adopted by steel pipelines in oil fields are epoxy powder, epoxy glass flake and other coatings for corrosion prevention, and corrosion-resistant alloy joint coating is adopted; but the general existing coating has the defects of no temperature resistance, no pressure resistance and undesirable anticorrosion effect; the method has the advantages that the method has no reinforcing effect on pipelines, and meanwhile, the inner repaired mouth has more nodes, the welding process is complex, the required welding quality is high, the realization difficulty is high, the hidden danger points are more and the like.
The oil field urgent need find one kind and reduce interior repaired mouth as far as possible, and the inner liner not only has good anticorrosive effect simultaneously, still needs to possess certain intensity, can effectively reduce the pipeline inefficacy that the internal and external corrosion caused, has certain pipeline and strengthens the repairing action. Therefore, a lining repairing process is introduced, a new pipeline is lined in the existing steel pipeline to form a pipe-in-pipe, and the service life of the original steel pipeline is prolonged. The lining repair process introduced from municipal pipeline maintenance is mainly divided into two types: HDPE interlude inside lining technology and CIPP upset inside lining technology, but all have temperature resistant low, withstand voltage low problem.
The HDPE interlining process has the following problems:
1) when the PE pipe is inserted and dragged in the repaired steel pipe, the PE pipe is easily abraded and scratched by welding beading, burrs and other foreign matters, and the lining pipe can be scrapped due to careless operation;
2) the oil gas has swelling effect on the PE material, and the PE pipe wall is thinned after long-time soaking;
3) whether the PE pipe is extruded or folded in a U shape, the service life of the PE pipe can be shortened by heating and cooling;
4) the integral hardness is improved after the U-shaped folding, and the careful operation is needed when the pipeline fluctuates over 22 degrees;
5) the insertion process of the PE pipe can be only carried out on the straight pipe section, and the elbow cannot be repaired;
6) when the temperature of the conveying medium exceeds 70 ℃, the PE pipe can generate thermal expansion and elongation;
7) the process has the advantages of complex equipment, large occupied construction field and high compensation.
The CIPP inversion liner process currently in use has the following problems:
the temperature resistance is low, and the existing electric pump well fluid conveying pipeline can not meet the repair requirement of high-temperature electric pump well fluid conveying pipelines due to the temperature resistance of 80 ℃.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an anticorrosion repairing method for a temperature-resistant pressure-resistant composite pipe lined in an oil-gas-water mixed transportation pipeline, which can make up the defects of the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an anticorrosion repairing method for a temperature-resistant pressure-resistant composite pipe of an inner liner of an oil-gas-water mixed transportation pipeline comprises the following steps:
s1, manufacturing a lining hose;
s2, preparing an adhesive;
s3, preprocessing the interior of the pipeline according to the actual condition of the interior of the pipeline, and removing hard obstacles in the pipeline;
s4, weaving a flat belt in the lining hose in a penetrating manner, keeping the flat belt in the lining hose from twisting all the time, filling the adhesive into the lining hose, and avoiding air filling in the process of filling the adhesive;
s5, connecting the head end of the lining hose soaked with the adhesive with a braided flat belt pre-wound on a rotating shaft of the turner, spirally winding the lining hose on the rotating shaft of the turner, locking the tail end of the lining hose on an outlet pipe seat of the turner, and performing lining turning construction on the lining hose;
s6, pressing, curing and connecting the lining pipe sections, which comprises
S61, after the lining of the lining hose is turned over, sealing two ends of the lining hose, and carrying out pressure building and curing;
s62, welding a joint-repairing-free stainless steel joint with the steel pipe before the lining of the lining hose is turned over, cutting off redundant lining hose after the lining hose is subjected to pressure building and curing, and fixing the lining hose by using a stainless steel conical sleeve;
and S63, welding the lining pipe sections by adopting stainless steel short joints.
Preferably, in step S1, the lining hose is a braided tubular structure with an outer shielding layer and an arbitrarily adjusted length, which is formed by compounding an anti-permeation and anti-corrosion layer on the outer surface of a braided flexible composite tubular and strip-shaped base material.
Preferably, the shielding layer is made of thermoplastic polyurethane elastomer.
Preferably, in step S3, the pretreatment method includes ball descaling, acid pickling descaling, high-pressure jet cleaning, and pulse cleaning.
Preferably, in step S5, the inversion pressure is maintained at 0.2-0.4 MPa.
Preferably, in step S61, the pressure-holding curing parameters are: the pressure is kept between 0.1 and 0.2MPa, the temperature is above 5 ℃, and the curing time is not less than 48 hours.
Preferably, in step S62, the lining hose 10cm inside the port is measured and removed, the lining hose is wedged into the port before and after the cutting point and after the taper sleeve is coated with the adhesive steel, the excess taper sleeve is removed by cold cutting, and 4-6 positions are selected for further fixing by electric welding.
Preferably, in step S63, cooling measures are taken on both sides of the crater during the welding process.
Compared with the prior art, the invention has the beneficial effects that:
1. the pipeline repaired by the lining method has the advantages of stable performance, high temperature resistance, long service life, safety and reliability.
2. Carry out inside lining restoration on original pipeline basis and need not newly to look for the route, avoid environmental protection problems such as excavation, be fit for the urban construction.
3. The prefabricated steel pipe can be prefabricated in a factory and constructed on site, and the construction time on site is saved.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
Example (b): the invention relates to an anti-corrosion repair method for a temperature-resistant pressure-resistant composite pipe lined in an oil-gas-water mixed transportation pipeline, which comprises the following steps:
s1, manufacturing a lining hose;
the lining hose is a braided tubular structure with a shielding layer on the outer surface and randomly adjusted length, namely a lining pipe, which is prepared by compounding an anti-seepage and anti-corrosion layer on the outer surface through processes such as extrusion molding or film coating on the basis of braided flexible composite tubular and strip base materials.
Selection of lining hose material
(1) Lining hose lining shield selection
With a German Basff TPU: as a shielding layer of the lining hose, TPU (thermoplastic polyurethane elastomer) has excellent characteristics of high tension, high tensile force, toughness and aging resistance, and is a mature environment-friendly material.
The liner shield was tested as follows:
the wear resistance index of the TPU coated film is 4mg (1000g/1000r, cs-17 wheels), is 4-7 times of the wear resistance of epoxy powder (17 mg) and glass flake (31 mg), and is 7.25 times of the wear resistance of HDPE (29 mg). The paint has excellent mechanical property and chemical resistance, can completely isolate corrosive environment, and effectively controls the internal corrosion of the pipeline.
(2) Composite pipe assembly
Aiming at the high temperature, strong corrosion and the working environment temperature of an oil field below 90 ℃, a multi-layer composite process of nylon fiber, glass fiber reinforcing ribs, nylon fiber and TPU (German BASF) is adopted to manufacture a hose, the thickness of a lining is determined according to the working condition requirement, and the hose can resist the temperature of 90 ℃; meanwhile, the linings can be overlapped for many times to reach any thickness of tens of millimeters; the strength is increased, so that the phenomenon that the inner liner is partially damaged and then is connected with other pipe sections to sink and block a pipeline can be avoided, and the wall thickness of the composite pipe is required to be more than 2 mm.
Aiming at extremely severe working conditions, high temperature, strong corrosion and working environment temperature of an oil field is below 120 ℃, and a hose can be customized by mutually combining multiple materials such as temperature-resistant and corrosion-resistant fibers such as PPS (polyphenylene sulfide), PTFE (polytetrafluoroethylene), carbon fibers or aramid fibers (Kevlar) reinforcing ribs, TPU (thermoplastic polyurethane) covering films and the like.
S2, preparing an adhesive;
the adhesive is cured and bonded by phenolic epoxy vinyl resin which is subjected to mechanical coupling temperature resistance of 150 ℃, so that the requirements of corrosion resistance and temperature resistance are met.
The prepared adhesive needs to meet certain invasion capacity, and the experimental method for testing the invasion capacity of the adhesive is as follows:
the tube thickness was recorded and weighed for a 1 square meter area of lined hose.
And (3) pouring enough adhesive, rolling the adhesive in the hose for 2 times by adopting a flat rolling method, removing the redundant adhesive, and weighing and recording the weight of the rolled adhesive. The amount of the lining hose invasion adhesive required to be 1 square meter is 1kg/m2。
And S3, performing pretreatment by optimally combining processes such as pipe cleaner rust removal, acid cleaning rust removal, high-pressure water jet cleaning, pulse cleaning and the like according to the actual conditions in the pipeline.
The hard barriers in the pipe, such as welding burrs, perforation and nail planting, can be removed by means of an endoscope, a ball-through inspection and the like, and the small protrusions can be covered without relative friction. The rust removal of the inner wall of the pipeline reaches St3 grade, and the bonding requirement of the adhesive resin is met. And two ends of the steel pipe are welded with the stainless steel short section.
S4, the flat belt needs to be woven in the lining hose in a penetrating mode, and the flat belt is kept not to twist in the lining hose from beginning to end. According to 1Kg/m2The glue is filled into the lining hose after the adhesive is prepared, so that air is prevented from being filled, an air slug is formed, the glue filling effect is influenced, and the glue filling quality is observed and checked on the outer surface.
And S5, connecting the head end of the lining hose soaked with the adhesive with a braided flat belt which is wound on a rotating shaft of the turner in advance, winding the lining hose in a spiral manner on the rotating shaft of the turner, locking the tail end of the lining hose on an outlet pipe seat of the turner, and performing lining turning construction on the lining hose, wherein the turning pressure is required to be kept at 0.2-0.4 MPa.
S6, pressing, curing and connecting the lining pipe sections, which comprises
S61, after the lining of the lining hose is turned over, sealing two ends of the lining hose, and carrying out pressure building and curing; the pressure building curing parameters are as follows: keeping the pressure at 0.1-0.2MPa, keeping the temperature at above 5 ℃, keeping the curing time at least 48h, and adjusting the curing time according to the temperature. After curing, a pipeline endoscope is used for probing into the liner tube to observe the lining turnover quality.
S62, welding the joint without the repaired mouth with the steel pipe before the lining of the lining hose is turned over, cutting off the redundant lining hose and customizing a stainless steel conical sleeve after the lining hose is subjected to pressure building and curing; measuring and removing the 10cm lining hose on the inner side of the port, wedging the lining hose into the port before and after the cutting point of the lining hose and after the conical sleeve is coated with the adhesive steel glue, cold cutting to remove the redundant conical sleeve, and selecting 4-6 positions for further fixing by electric welding.
S63, stainless steel short sections are welded among the lining pipe sections, and cooling measures are taken on two sides of a welded junction in the welding process to avoid hose damage.
The pipeline repaired by the method has the advantages of stable performance, high temperature resistance, long service life, safety and reliability; the pipeline can be repaired on the basis of the original pipeline without newly finding a route, so that the environmental protection problems such as excavation and the like are avoided, and the pipeline is suitable for urban construction; the prefabricated steel pipe can be prefabricated in a factory and constructed on site, and the construction time on site is saved.
Claims (8)
1. An anticorrosion repairing method for a temperature-resistant pressure-resistant composite pipe of an inner liner of an oil-gas-water mixed transportation pipeline is characterized by comprising the following steps of:
s1, manufacturing a lining hose;
s2, preparing an adhesive;
s3, preprocessing the interior of the pipeline according to the actual condition of the interior of the pipeline, and removing hard obstacles in the pipeline;
s4, weaving a flat belt in the lining hose in a penetrating manner, keeping the flat belt in the lining hose from twisting all the time, filling the adhesive into the lining hose, and avoiding air filling in the process of filling the adhesive;
s5, connecting the head end of the lining hose soaked with the adhesive with a woven flat belt wound on a rotating shaft of the turner in advance, winding the lining hose in a spiral manner on the rotating shaft of the turner, locking the tail end of the lining hose on an outlet pipe seat of the turner, and performing lining turning construction on the lining hose;
s6, pressing, curing and connecting the lining pipe sections, which comprises
S61, after the lining of the lining hose is turned over, sealing two ends of the lining hose, and carrying out pressure building and curing;
s62, welding a joint-repairing-free stainless steel joint with the steel pipe before the lining of the lining hose is turned over, cutting off redundant lining hose after the lining hose is subjected to pressure building and curing, and fixing the lining hose by using a customized stainless steel conical sleeve;
and S63, welding the lining pipe sections by adopting stainless steel short joints.
2. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 1, characterized by comprising the following steps of: in step S1, the lining hose is a braided tubular structure with a shielding layer on the outside and an arbitrarily adjustable length, which is obtained by compounding an anti-permeation and anti-corrosion layer on the outer surface of a braided flexible composite tubular and strip-shaped base material.
3. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 2, characterized by comprising the following steps of: the shielding layer is made of thermoplastic polyurethane elastomer.
4. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 1, characterized by comprising the following steps of: in step S3, the pretreatment mode comprises pig rust removal, acid cleaning rust removal, high-pressure water jet cleaning and pulse cleaning.
5. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 1, characterized by comprising the following steps of: in step S5, the inversion pressure is maintained at 0.2-0.4 MPa.
6. The anti-corrosion repair method for the temperature-resistant and pressure-resistant composite pipe lined in the oil-gas-water mixture transportation pipeline according to claim 1, which is characterized by comprising the following steps of: in step S61, the pressure-holding curing parameters are: the pressure is kept between 0.1 and 0.2MPa, the temperature is above 5 ℃, and the curing time is not less than 48 hours.
7. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 1, characterized by comprising the following steps of: in step S62, measuring and removing the lining hose 10cm inside the port, wedging the lining hose into the port before and after the cutting point of the lining hose and after the conical sleeve is coated with the adhesive steel glue, cold cutting to remove the redundant conical sleeve, and selecting 4-6 positions for further fixing by electric welding.
8. The anti-corrosion repair method of the temperature-resistant pressure-resistant composite pipe lined in the oil-gas-water mixed transportation pipeline according to claim 1, characterized by comprising the following steps of: in step S63, cooling measures are taken on two sides of the crater in the welding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339663.0A CN114688383A (en) | 2022-04-01 | 2022-04-01 | Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339663.0A CN114688383A (en) | 2022-04-01 | 2022-04-01 | Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114688383A true CN114688383A (en) | 2022-07-01 |
Family
ID=82141708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210339663.0A Pending CN114688383A (en) | 2022-04-01 | 2022-04-01 | Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114688383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992422A (en) * | 2022-07-07 | 2022-09-02 | 苏祥管道科技江苏有限公司 | Ultraviolet curing lining repairing device and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08164560A (en) * | 1994-12-16 | 1996-06-25 | Shonan Gosei Jushi Seisakusho:Kk | Branch pipe-lining material and branch pipe-lining method |
| JPH08244115A (en) * | 1995-03-09 | 1996-09-24 | Tokyo Gas Co Ltd | Inserter for inserting long article into flexible tube |
| CN101413613A (en) * | 2008-11-21 | 2009-04-22 | 大庆油田有限责任公司 | Method for restoring small diameter metal old pipe long-distance inner overturn lining hose |
| CN107672155A (en) * | 2017-10-25 | 2018-02-09 | 鼎尚（大连）科技发展有限公司 | A kind of Pneumatic turnover equipment and renovation technique for pipeline rehabilitation |
| CN110307440A (en) * | 2019-06-19 | 2019-10-08 | 北京四达基业市政建设工程有限公司 | A kind of pipeline inverted liner restorative procedure |
| CN209977560U (en) * | 2019-03-13 | 2020-01-21 | 江苏爱索新材料科技有限公司 | Lining pipe conical joint for trenchless pipeline repair |
-
2022
- 2022-04-01 CN CN202210339663.0A patent/CN114688383A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08164560A (en) * | 1994-12-16 | 1996-06-25 | Shonan Gosei Jushi Seisakusho:Kk | Branch pipe-lining material and branch pipe-lining method |
| JPH08244115A (en) * | 1995-03-09 | 1996-09-24 | Tokyo Gas Co Ltd | Inserter for inserting long article into flexible tube |
| CN101413613A (en) * | 2008-11-21 | 2009-04-22 | 大庆油田有限责任公司 | Method for restoring small diameter metal old pipe long-distance inner overturn lining hose |
| CN107672155A (en) * | 2017-10-25 | 2018-02-09 | 鼎尚（大连）科技发展有限公司 | A kind of Pneumatic turnover equipment and renovation technique for pipeline rehabilitation |
| CN209977560U (en) * | 2019-03-13 | 2020-01-21 | 江苏爱索新材料科技有限公司 | Lining pipe conical joint for trenchless pipeline repair |
| CN110307440A (en) * | 2019-06-19 | 2019-10-08 | 北京四达基业市政建设工程有限公司 | A kind of pipeline inverted liner restorative procedure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992422A (en) * | 2022-07-07 | 2022-09-02 | 苏祥管道科技江苏有限公司 | Ultraviolet curing lining repairing device and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2786057B1 (en) | Fiberglass pipe jointing methods and systems | |
| US20130140811A1 (en) | Fiberglass pipe jointing methods and systems | |
| CN107676569B (en) | The construction method of heat distribution pipeline original position liner reparation | |
| CN114688383A (en) | Anticorrosion repairing method for temperature-resistant pressure-resistant composite pipe of liner of oil-gas-water mixed transportation pipeline | |
| CN101885898A (en) | Composite material for repairing defective pipeline | |
| CN203384514U (en) | High-pressure flexible rubber hose | |
| CN103398241B (en) | A kind of high-pressure flexible rubber hose and connector connecting method thereof | |
| Cheldi et al. | Use of spoolable reinforced thermoplastic pipes for oil and water transportation | |
| CN115949806A (en) | Double-reinforced all-steel spiral-line polyethylene composite pipe and connecting pipe fitting | |
| CN115076510B (en) | Repairing device and repairing method for reinforcing and repairing pipeline lining | |
| CN206617670U (en) | A kind of UHMWPE steel skeletons composite oil pipeline | |
| CN115596925A (en) | Online repairing method for flexible composite pipe | |
| CN212672608U (en) | Thermal cladding high-molecular polyolefin composite inner anti-corrosion protection ground engineering pipeline | |
| CN209196400U (en) | A kind of high-density polytene pipeline liner reparation structure | |
| CN203823255U (en) | Fire-fighting underground high-pressure-resistant plastic composite tube | |
| CN114526398A (en) | Construction method for repairing drainage pipeline by newly added lining pipe | |
| CN217272857U (en) | Anti-corrosion pipeline for petroleum and natural gas transportation | |
| CN219473089U (en) | Carbon fiber reinforced anti-corrosion repair structure for metal pipeline | |
| CN115355370A (en) | Large-diameter high-pressure-bearing marine oil delivery hose | |
| US20240125415A1 (en) | End fittings for flexible pipe segments | |
| RU2251047C2 (en) | Method of repairing submerged pipeline | |
| RU2684518C1 (en) | Method for protection of inner cavity of pipeline against corrosion and abrasive wear | |
| Savino et al. | Thermoplastic liners for rehabilitation of oil flowline and water injection lines, integrity and service life | |
| Steen et al. | Steel Strip Laminate, a high-performance hybrid | |
| CN107387889A (en) | The durable body of multi-purpose type corrosion-resistant thermal insulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |