CN113942256A - Method for preparing oil pipe lining - Google Patents

Method for preparing oil pipe lining Download PDF

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Publication number
CN113942256A
CN113942256A CN202010683615.4A CN202010683615A CN113942256A CN 113942256 A CN113942256 A CN 113942256A CN 202010683615 A CN202010683615 A CN 202010683615A CN 113942256 A CN113942256 A CN 113942256A
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China
Prior art keywords
tube layer
oil pipe
polyketone
wall
lining
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CN202010683615.4A
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Chinese (zh)
Inventor
张林艳
曾文广
叶帆
张江江
郭玉洁
张志宏
秦飞
石鑫
刘青山
陈朝
马清杰
刘强
应海玲
李芳�
魏晓静
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China Petroleum and Chemical Corp
Sinopec Northwest Oil Field Co
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China Petroleum and Chemical Corp
Sinopec Northwest Oil Field Co
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Priority to CN202010683615.4A priority Critical patent/CN113942256A/en
Publication of CN113942256A publication Critical patent/CN113942256A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/005—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels the end of an internal lining
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L73/00—Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups C08L59/00 - C08L71/00; Compositions of derivatives of such polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides a method for preparing an oil pipe lining. Which comprises the following steps: 1) forming the first granules into a tubular structure through extrusion molding, thereby obtaining a first tube layer; 2) coating a silica aerogel felt on the outer wall of the first tube layer to obtain a second tube layer positioned on the outer wall of the first tube layer; 3) extruding and coating second granules on the outer wall of the second tube layer to obtain a third tube layer positioned on the outer wall of the second tube layer so as to form the oil tube lining; the first granules are made of polyketone; the second granules are made of polyketone or a mixture of polyketone and inorganic particles, wherein the inorganic particles are inorganic nano-particles and/or hollow glass beads, and the inorganic nano-particles are nano-silica and/or nano-clay.

Description

Method for preparing oil pipe lining
Technical Field
The invention provides a method for preparing an oil pipe lining.
Background
At present, most of oil fields in China are exploited in a decline period, and the wax content, the viscosity and the freezing point of the exploited crude oil are increasingHigh. When crude oil is produced, the temperature of oil is reduced along with the shallow depth of a well by using a non-heat-insulating oil pipe, the oil is solidified at a position close to a well mouth to cause oil pipe blockage, and normal production is seriously influenced. In addition, H in the oil2S/CO2When the content of acid gas is high, the oil liquid directly contacts the steel oil pipe to generate serious corrosion, and the service life is greatly shortened.
The existing heat-insulating oil pipe mainly adopts a mode of arranging a heat-insulating layer to reduce the cooling speed of oil liquid and prevent the oil liquid from solidifying. After the heat preservation layer is fixed on the inner anti-corrosion layer, the heat preservation layer is integrally lined into the outer anti-corrosion pipe, and in the process, the heat preservation layer is easy to deform and damage, so that the uniformity of the heat preservation pipe is influenced.
Disclosure of Invention
The invention provides a method for preparing an oil pipe lining, which comprises the following steps:
1) forming the first granules into a tubular structure through extrusion molding, thereby obtaining a first tube layer;
2) coating a silica aerogel felt on the outer wall of the first tube layer to obtain a second tube layer positioned on the outer wall of the first tube layer;
3) extruding and coating second granules on the outer wall of the second tube layer to obtain a third tube layer positioned on the outer wall of the second tube layer so as to form the oil tube lining;
the first granules are made of polyketone; the second granules are made of polyketone or a mixture of polyketone and inorganic particles, wherein the inorganic particles are inorganic nano-particles and/or hollow glass beads, and the inorganic nano-particles are nano-silica and/or nano-clay.
In a specific embodiment, the method further comprises a step 4) after the step 3), after the tubing liner is threaded into the tubing, the tubing liner is tightly attached to the inside of the tubing.
In one embodiment, the tubing liner is temporarily reduced by a diameter reducer, and is inserted into the tubing by a traction device, and is allowed to stand to make the tubing liner closely fit with the inner wall of the tubing.
In one embodiment, when the second pellets are a mixture of polyketone and inorganic particles, the content of the polyketone is 90% to 99% and the content of the inorganic particles is 1% to 10% based on 100% of the total mass of the second pellets.
In a particular embodiment, the first and second pellets independently have a particle size of 2 to 4 mm.
In one embodiment, the inorganic nanoparticles have a particle size of 200nm to 500 nm; the particle size of the hollow glass bead is 25 to 50 μm.
In a specific embodiment, the first tube layer has a thickness of 2 to 4 mm.
In a specific embodiment, the second tube layer has a thickness of 4 to 6 mm.
In a specific embodiment, the third tube layer has a thickness of 2 to 4 mm.
In a specific embodiment, the silica aerogel blanket is coated on the outer wall of the first tube layer with an adhesive.
In a specific embodiment, the polyketone is at least one of Xiaoxing M330, Xiaoxing M630, Xiaoxing M730, and Xiaoxing M640.
In one embodiment, the glue is selected from at least one of DP100(3M corporation), 2216Gray (3M corporation), lotai 638 (han golet corporation) and lotai 648 (han golet corporation).
In a specific embodiment, when the material of the second pellet is polyketone, a film strip is further included between the second tube layer and the third tube layer.
In one embodiment, the film strip is made of polyethylene terephthalate (PET).
In a particular embodiment, the film strip has a thickness of 0.05 to 0.1 mm.
In a specific embodiment, when the material of the second granules is a mixture of the polyketone and the inorganic particles, the method further comprises the following step I) before the step 3): extruding and pelletizing the polyketone with the inorganic particles to obtain the second pellets.
In one embodiment, the extrusion temperatures of step 1), step 3) and step I) are independently from 220 ℃ to 260 ℃; in the step 4), the oil pipe lining is temporarily shrunk at 25-80 ℃ by a diameter reducer, and the standing time is 24-48 h. The invention has the beneficial effects that:
according to the invention, the third tube layer is coated on the outer wall of the second tube layer through an extrusion process, and meanwhile, inorganic nano particles are added into the material of the third tube layer to improve the viscosity of an extrusion melt, or hollow glass beads are added to further improve the heat insulation performance. And simultaneously, finished polyester film tapes can be wound on the outer wall of the second tube layer. The oil pipe lining of the invention also improves the corrosion resistance.
Drawings
Fig. 1 schematically shows a structure of a finished tubing lining for heavy oil recovery according to the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary of the invention and are not to be construed as limiting the invention in any way.
The structure of the tubing liner is shown in figure 1.
Example 1
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M330 polyketone pellets having a particle size of 2 to 4mm were extruded at 220 ℃ by an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 3 mm.
(2) Coating a 3M DP100 type adhesive on the outer wall of the first tube layer 4, and then wrapping a silica aerogel felt on the outer wall of the first tube layer 4 to form a second tube layer 3 with the thickness of 5 mm.
(3) Xiaoxing M330 polyketone pellets having a particle size of 2 to 4mm were mixed with silica particles having an average particle size of 200nm at 220 ℃ using an extruder, wherein the polyketone accounted for 99% by mass and the silica particles accounted for 1% by mass, and extrusion-granulated to give mixed pellets having a particle size of 2 to 4 mm.
(4) And extruding the mixed granules at 220 ℃ to coat the mixed granules on the outer wall of the second tube layer 3 to form a third tube layer 2 with the thickness of 3mm, so as to obtain the oil tube lining independent of the oil tube.
(5) And temporarily reducing the oil pipe lining at 25 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 24 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(6) And (3) flanging the connecting ends of the oil pipe lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 2
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M330 polyketone pellets having a particle size of 2 to 4mm were extruded at 220 ℃ by an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 3 mm.
(2) Coating a 3M DP100 type adhesive on the outer wall of the first tube layer 4, and then wrapping a silica aerogel felt on the outer wall of the first tube layer 4 to form a second tube layer 3 with the thickness of 5 mm.
(3) Xiaoxing M330 polyketone pellets having a particle size of 2 to 4mm were mixed with silica particles having an average particle size of 500nm at 220 ℃ using an extruder, wherein the polyketone accounted for 97% by mass and the silica particles accounted for 3% by mass, and extrusion-granulated to give mixed pellets having a particle size of 2 to 4 mm.
(4) And extruding the mixed granules at 220 ℃ to coat the mixed granules on the outer wall of the second tube layer 3 to form a third tube layer 2 with the thickness of 3mm, so as to obtain the oil tube lining independent of the oil tube.
(5) And temporarily reducing the oil pipe lining at 25 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 24 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(6) And (3) flanging the connecting ends of the oil pipe lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 3
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M630 polyketone pellets having a particle size of 2 to 4mm were extruded at 240 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 2 mm.
(2) 3M 2216Gray glue was applied to the outer wall of the first tube layer 4, and then a silica aerogel felt was wrapped on the outer wall of the first tube layer 4 to form a second tube layer 3 having a thickness of 6 mm.
(3) Mixing Xiaoxing M630 polyketone granules with the particle size of 2-4 mm and nanoclay granules with the average particle size of 200nm at 250 ℃ by using an extruder, wherein the polyketone accounts for 95% of the total mass, the nanoclay granules account for 5% of the total mass, and performing extrusion granulation to prepare mixed granules with the particle size of 2-4 mm.
(4) And extruding and coating the mixed granules on the outer wall of the second tube layer 3 at 250 ℃ to form a third tube layer 2 with the thickness of 3mm, so as to obtain the oil tube lining independent of the oil tube.
(5) And temporarily reducing the oil pipe lining at 40 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 24 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(6) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 4
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M630 polyketone pellets having a particle size of 2 to 4mm were extruded at 240 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 2 mm.
(2) 3M 2216Gray glue was applied to the outer wall of the first tube layer 4, and then a silica aerogel felt was wrapped on the outer wall of the first tube layer 4 to form a second tube layer 3 having a thickness of 6 mm.
(3) Mixing Xiaoxing M630 polyketone granules with the particle size of 2-4 mm and nanoclay granules with the average particle size of 500nm at 250 ℃ by using an extruder, wherein the polyketone accounts for 90% of the total mass, and the nanoclay granules account for 10% of the total mass, and performing extrusion granulation to prepare mixed granules with the particle size of 2-4 mm.
(4) And extruding and coating the mixed granules on the outer wall of the second tube layer 3 at 250 ℃ to form a third tube layer 2 with the thickness of 3mm, so as to obtain the oil tube lining independent of the oil tube.
(5) And temporarily reducing the oil pipe lining at 40 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 24 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(6) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 5
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M730 polyketone pellets having a particle size of 2 to 4mm were extruded at 240 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 4 mm.
(2) 3M DP100 glue was applied to the outer wall of the first tube layer 4, and then a silica aerogel felt was wrapped over the outer wall of the first tube layer 4 to form a second tube layer 3 having a thickness of 5 mm.
(3) And a PET film tape with the thickness of 0.05mm is wound on the outer wall of the second tube layer 3.
(4) And extruding and coating the Xiaoxing M730 polyketone granules with the particle size of 2-4 mm on the outer wall of the polyester film belt at 240 ℃ to form a third pipe layer 2 with the thickness of 2mm, so as to obtain an oil pipe lining independent of the oil pipe.
(5) And temporarily reducing the oil pipe lining at 55 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 36h to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(6) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 6
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M640 polyketone pellets having a particle size of 2 to 4mm were extruded at 250 ℃ using an extruder, and were shaped into a tubular structure, and cooled to obtain a first tube layer 4 having a thickness of 2 mm.
(2) Loctite 638 glue (hanjolotai corporation) was coated on the outer wall of the first tube layer 4, and then a silica aerogel felt was wrapped on the outer wall of the first tube layer 4 to form the second tube layer 3 having a thickness of 6 mm.
(3) A pet polyester film tape having a thickness of 0.075mm was wound on the outer wall of the second tube layer 3.
(4) Mixing Xiaoxing M640 polyketone granules with the particle size of 2-4 mm and hollow glass beads with the average particle size of 25 mu M at 260 ℃ for granulation by an extruder, wherein the polyketone accounts for 95% of the total mass, the hollow glass beads account for 5% of the total mass, and preparing the mixed granules with the particle size of 2-4 mm.
(5) And extruding and coating the mixed granules on the outer wall of the polyester film belt at 260 ℃ to form a third pipe layer 2 with the thickness of 3mm, so as to obtain an oil pipe lining independent of the oil pipe.
(6) And temporarily reducing the oil pipe lining at 70 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 48 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(7) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Example 7
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M640 polyketone pellets having a particle size of 2 to 4mm were extruded at 260 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 3 mm.
(2) And coating the outer wall of the first tube layer 4 with Hangaotai 648 adhesive, and then wrapping the outer wall of the first tube layer 4 with silica aerogel felt to form a second tube layer 3 with the thickness of 4 mm.
(3) And a PET film tape with the thickness of 0.1mm is wound on the outer wall of the second tube layer 3.
(4) Mixing Xiaoxing M640 polyketone granules with the particle size of 2-4 mm and hollow glass beads with the average particle size of 50 mu M at 260 ℃ for granulation by an extruder, wherein the polyketone accounts for 90% of the total mass, the hollow glass beads account for 10% of the total mass, and preparing the mixed granules with the particle size of 2-4 mm.
(5) And extruding and coating the mixed granules on the outer wall of the polyester film belt at 260 ℃ to form a third pipe layer 2 with the thickness of 4mm, so as to obtain an oil pipe lining independent of the oil pipe.
(6) And temporarily reducing the pipe by a diameter reducing machine at 80 ℃, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 48 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(7) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Comparative example 1
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M730 polyketone pellets having a particle size of 2 to 4mm were extruded at 240 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 3 mm.
(2) 3M DP100 glue was applied to the outer wall of the first tube layer 4, and then a silica aerogel felt was wrapped over the outer wall of the first tube layer 4 to form a second tube layer 3 having a thickness of 5 mm.
(3) And winding a polyester film tape with the thickness of 0.05mm on the outer wall of the second tube layer 3 to obtain an oil tube lining independent of the oil tube.
(4) And temporarily reducing the oil pipe lining at 25 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 24 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(5) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Comparative example 2
The manufacturing method of the oil pipe lining comprises the following steps:
(1) xiaoxing M640 polyketone pellets having a particle size of 2 to 4mm were extruded at 260 ℃ using an extruder, and were shaped into a tubular structure, and cooled to give a first tube layer 4 having a thickness of 3 mm.
(2) Loctite 648 glue (hanjolotai corporation) was applied to the outer wall of the first tube layer 4 and then a silica aerogel blanket was wrapped over the outer wall of the first tube layer 4 to form a second tube layer 3 having a thickness of 5 mm.
(3) The Xiaoxing M640 polyketone granules with the particle size of 2-4 mm are extrusion coated on the outer wall of the second tube layer 3 at 260 ℃ by using an extruder to form a third tube layer 2 with the thickness of 3mm, so that the oil tube lining independent of the oil tube is obtained.
(4) And temporarily reducing the oil pipe lining at 80 ℃ by a diameter reducer, penetrating the oil pipe lining into the oil pipe by using a traction device, and standing for 48 hours to enable the third pipe layer 2 of the oil pipe lining to be tightly attached to the inner wall of the oil pipe 1.
(5) And (3) flanging the connecting ends of the lining pipe extending out of the two ends of the oil pipe 1 by using a flanging machine to obtain an oil pipe finished product sleeved with the oil pipe lining.
Performance testing
The test process of the heat preservation effect of the oil pipe sleeved with the oil pipe lining is as follows: after one end of the oil pipe sleeved with the oil pipe lining is closed, hot water with the temperature of 70 ℃ is filled into the oil pipe, then the other end of the oil pipe is closed, and then a non-contact infrared temperature measuring instrument is used for detecting the temperature of the outer wall of the pipe section, and the result is shown in table 1.
TABLE 1 temperature of the outer wall of the tubing in each example
Examples Temperature after 5 minutes (. degree. C.) Temperature (. degree.C.) after 15 minutes
Example 1 27.2 28.5
Example 2 27.0 28.1
Example 3 24.2 26.5
Example 4 24.5 26.8
Example 5 24.3 25.9
Example 6 23.1 24.2
Example 7 22.2 23.8
Comparative example 1 30.2 33.1
Comparative example 2 26.5 30.6
A standard tensile bar was cut from the first tube layer 4 (without coating the second tube layer, the third tube layer and the film tape on the outer wall thereof) of the oil pipe liners prepared in 7 examples and two comparative examples, the bar was placed in a 150 ℃ simulated condition, taken out after a duration of 7 days at a temperature of 150 ℃, tested for tensile strength and elongation at break according to the national standard GB/T1040, and the rate of change in tensile strength and the rate of change in elongation at break were calculated according to the following formulas.
Elongation at break change ═ elongation at break after corrosion-elongation at break before corrosion)/original elongation × 100%
Tensile strength change rate (tensile strength after corrosion-tensile strength before corrosion)/original tensile strength × 100%
The results are shown in Table 2.
As can be seen from the performance test results in Table 2, the corrosion resistance, mechanical properties and the like of the oil pipe lining of the invention in a high-temperature environment are greatly improved compared with those of the polyethylene lining oil pipe, and the oil pipe lining can meet the requirements of high temperature and high H content of an oil-gas field2O、O2、H2S、CO2、Cl—Fluid transport requirements.
TABLE 2 comparison of mechanical properties before and after corrosion under simulated conditions
Figure BDA0002585622450000081
Note: the rate of change data "+" indicates an increase in value and "-" indicates a decrease in value.
While the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various changes can be made without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, and method to the essential scope and spirit of the present invention. All such modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (11)

1. A method of preparing an oil pipe liner comprising the steps of:
1) forming the first granules into a tubular structure through extrusion molding, thereby obtaining a first tube layer;
2) coating a silica aerogel felt on the outer wall of the first tube layer to obtain a second tube layer positioned on the outer wall of the first tube layer;
3) extruding and coating second granules on the outer wall of the second tube layer to obtain a third tube layer positioned on the outer wall of the second tube layer so as to form the oil tube lining;
the first granules are made of polyketone; the second granules are made of polyketone or a mixture of polyketone and inorganic particles, wherein the inorganic particles are inorganic nano-particles and/or hollow glass beads, and the inorganic nano-particles are nano-silica and/or nano-clay.
2. The method of claim 1, further comprising step 4) after step 3) of threading the tubing liner into the tubing to bring the tubing liner into close contact with the interior of the tubing;
preferably, the oil pipe lining is temporarily reduced through a diameter reducing machine, the oil pipe lining is penetrated into the oil pipe through a traction device, and the oil pipe lining is tightly attached to the inside of the oil pipe through standing.
3. The method according to claim 1 or 2, characterized in that when the second pellets are a mixture of polyketone and inorganic particles, the content of the polyketone is 90% to 99% and the content of the inorganic particles is 1% to 10% based on 100% of the total mass of the second pellets.
4. A method according to any one of claims 1 to 3, wherein the first and second pellets independently have a particle size of from 2 to 4 mm.
5. The method according to any one of claims 1 to 4, wherein the inorganic nanoparticles have a particle size of 200nm to 500 nm; the particle size of the hollow glass bead is 25 to 50 μm.
6. The method of any of claims 1-5, wherein the first tube layer has a thickness of 2 to 4mm and the second tube layer has a thickness of 4 to 6 mm; the thickness of the third tube layer is 2 to 4 mm.
7. The method of any of claims 1-6, wherein the silica aerogel blanket is coated on the outer wall of the first tube layer with an adhesive.
8. The method of claim 7 wherein the glue is selected from at least one of DP100, 2216Gray, letai 638 and letai 648.
9. The method of any one of claims 1 to 8, wherein when the material of the second pellet is polyketone, a film strip is further included between the second tube layer and the third tube layer; preferably, the material of the film belt is polyethylene terephthalate; preferably, the film strip has a thickness of 0.05 to 0.1 mm.
10. The method as claimed in any one of claims 1 to 8, wherein, when the material of the second pellets is a mixture of the polyketone and the inorganic particles, the method further comprises, before step 3), the following step I):
extruding and pelletizing the polyketone with the inorganic particles to obtain the second pellets.
11. The method according to any one of claims 1 to 10, wherein the extrusion temperature of step 1), step 3) and step I) is independently 220 ℃ to 260 ℃; in the step 4), the oil pipe lining is temporarily shrunk at 25-80 ℃ by a diameter reducer, and the standing time is 24-48 h.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5556673A (en) * 1991-07-08 1996-09-17 Compagnie Generale D'innovation Et De Developpement Cogidev Transparent composite structural elements and methods for producing same
CN104553089A (en) * 2014-10-30 2015-04-29 河北西伯力特种橡胶有限公司 Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe
CN106837192A (en) * 2017-02-23 2017-06-13 南通市华业石油机械有限公司 A kind of liner oil pipe and its manufacturing process
CN106917922A (en) * 2015-12-24 2017-07-04 天津安纳赛能源科技有限公司 A kind of flexible compound internal lining pipe and its production technology
CN107218449A (en) * 2017-06-07 2017-09-29 江苏万奇电器集团有限公司 A kind of pipe fitting with heat insulation function
CN107763328A (en) * 2017-09-08 2018-03-06 上海美桥科材料科技有限公司 A kind of high-performance insulation flow string with corrosion-proof lining
CN108518536A (en) * 2018-06-04 2018-09-11 中国石油化工股份有限公司 High temperature resistance multilayer plastic tube and its production method
CN109280271A (en) * 2018-09-26 2019-01-29 中国石油化工股份有限公司 A kind of oil tube inner lining heat insulation and wear resistance PP composite material pipeline and its preparation method
CN110260061A (en) * 2019-06-10 2019-09-20 四川景华石油机械有限公司 Height bending lightweight flexible and its production method
CN110283446A (en) * 2019-05-25 2019-09-27 招商局重工（江苏）有限公司 The inner lining material and preparation method thereof of nonmetal flexible multiple tube

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5556673A (en) * 1991-07-08 1996-09-17 Compagnie Generale D'innovation Et De Developpement Cogidev Transparent composite structural elements and methods for producing same
CN104553089A (en) * 2014-10-30 2015-04-29 河北西伯力特种橡胶有限公司 Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe
CN106917922A (en) * 2015-12-24 2017-07-04 天津安纳赛能源科技有限公司 A kind of flexible compound internal lining pipe and its production technology
CN106837192A (en) * 2017-02-23 2017-06-13 南通市华业石油机械有限公司 A kind of liner oil pipe and its manufacturing process
CN107218449A (en) * 2017-06-07 2017-09-29 江苏万奇电器集团有限公司 A kind of pipe fitting with heat insulation function
CN107763328A (en) * 2017-09-08 2018-03-06 上海美桥科材料科技有限公司 A kind of high-performance insulation flow string with corrosion-proof lining
CN108518536A (en) * 2018-06-04 2018-09-11 中国石油化工股份有限公司 High temperature resistance multilayer plastic tube and its production method
CN109280271A (en) * 2018-09-26 2019-01-29 中国石油化工股份有限公司 A kind of oil tube inner lining heat insulation and wear resistance PP composite material pipeline and its preparation method
CN110283446A (en) * 2019-05-25 2019-09-27 招商局重工（江苏）有限公司 The inner lining material and preparation method thereof of nonmetal flexible multiple tube
CN110260061A (en) * 2019-06-10 2019-09-20 四川景华石油机械有限公司 Height bending lightweight flexible and its production method

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