WO2017096579A1 - Reparation method for extending service life of petroleum transport pipe - Google Patents
Reparation method for extending service life of petroleum transport pipe Download PDFInfo
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- WO2017096579A1 WO2017096579A1 PCT/CN2015/096976 CN2015096976W WO2017096579A1 WO 2017096579 A1 WO2017096579 A1 WO 2017096579A1 CN 2015096976 W CN2015096976 W CN 2015096976W WO 2017096579 A1 WO2017096579 A1 WO 2017096579A1
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- 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
Definitions
- the invention relates to a repairing method for extending the service life of a petroleum conveying pipeline, and belongs to the technical field of fluid conveying equipment.
- the onshore oil and gas pipelines are basically steel pipelines. Most of the seawater pipelines have different degrees of corrosion. In addition, the oil pipeline oils vary, and the oil quality is complicated. In order to operate safely, it is necessary to repair or replace the corroded sea pipe, which brings pressure on the operating cost, output and environmental impact of the in-service oil field. However, the rectification of hidden dangers in oil and gas pipelines involves many units, large investment, high difficulty, and heavy tasks. In order to operate safely, the sea has to repair or replace the corroded sea pipe, which brings pressure on the operating costs, output and environmental impact of the in-service oil field. How to properly solve the problem of oil and gas pipeline maintenance/life extension at the end of the life cycle has become a serious issue in front of the pipeline industry.
- the object of the present invention is to provide a petroleum conveying pipeline extension for the above problems.
- the long service life repair method can solve the problem of corrosion in the pipeline at one time by installing the lining on the steel pipe without avoiding extensive ground excavation.
- the repair speed is fast, and the installation schedule is expected to be only 15-20% of the excavation method.
- a method for repairing the service life of an oil pipeline comprising the following steps:
- the method for repairing the service life of the petroleum pipeline is extended, and the method for preparing the flexible corrosion-resistant hose used for repairing in the step (1) is first to use a braiding machine to weave the reinforcing layer, and then to take the weaving machine from the weaving machine.
- the weaving layer is formed by extruding the inner layer at the braided layer above the braid layer through the upper extruder and the inner coating die, and the inner layer of the braid is passed through the heater under the action of the traction force, and the inner layer is molded.
- the braided layer is extruded through the outer extruder and the outer coating die on both sides, and the product is molded once.
- the method for repairing the service life of the petroleum pipeline, the cleaning of the pipeline to be repaired in the step (4) is cleaning with a cleaning agent, the amount of the cleaning agent is 150-250 g/m2, the cleaning
- the agent comprises 12 to 22 parts by weight of methanol, 22 to 35 parts of ethanol, 25 to 40 parts of fatty acid methyl ester ethoxylate, and 12 to 22 parts by weight of polyacrylamide. Parts, sodium hydroxide 5 to 20 parts, sodium alkyl sulfate 10 to 15 parts, spices 0.5 to 3 parts, water 55-60 parts.
- the oil transportation pipeline has a repairing method for prolonging the service life, and the compressed air described in the step (6) is compressed air having a pressure of 1.5-2.5 MPa.
- the repairing speed of the invention is fast, and the installation period is expected to be only 15-20% of the excavation method.
- the method of the invention has little influence on the normal operation of the pipeline.
- the flexible composite lining technology can reduce the overall construction cost by >40% compared with the conventional steel pipe/flexible pipe scheme.
- the repairing method of the invention has little impact on the environment, and has no emission throughout the whole process, and solves the problem that some pipes cannot be repaired by excavation and the traditional lining technology is not applicable. Solving the corrosion problem of old pipelines once and for all, completely eliminating hidden dangers. Provide security for the safety and stability of the society around oil and gas pipelines.
- the method of the present invention requires only a certain operation space at both ends of the pipeline to be repaired due to the repair, and there is no earth moving operation in other parts of the pipeline, and there is no influence on the pipeline passing through the environment, land, vibration, noise, and the like.
- a method for repairing the service life of an oil pipeline comprising the following steps:
- the method for repairing the service life of the petroleum pipeline, the method for preparing the flexible corrosion-resistant hose used for repairing in the step (1) is firstly using polyester filament or nylon filament or aramid or polyester filament and The nylon or aramid is woven into a reinforced layer, and then the woven layer is taken from the knitting machine by a tractor, and the inner layer is extruded at the braided layer above the woven layer by the upper extruder and the inner coating die. Under the action of traction, the inner layer of the braid is passed through the heater. During the inner plasticization process, the braid is extruded through the outer extruder and the outer coating die on both sides to form the product once.
- the method for repairing the service life of the petroleum pipeline, the cleaning of the pipeline to be repaired in the step (4) is cleaning with a cleaning agent, the amount of the cleaning agent is 150-250 g/m2, the cleaning
- the agent comprises 12 to 22 parts by weight of methanol, 22 to 35 parts of ethanol, 25 to 40 parts of fatty acid methyl ester ethoxylate, 12 to 22 parts of polyacrylamide, 5 to 20 parts of sodium hydroxide, and alkyl sulfate in parts by weight. 10 to 15 parts of sodium, 0.5 to 3 parts of spices, and 55-60 parts of water.
- the method for repairing the service life of the petroleum pipeline is extended, and the method for cleaning the pipeline to be repaired as described in the step (4) is:
- the oil transportation pipeline has a repairing method for prolonging the service life, and the compressed air described in the step (6) is compressed air having a pressure of 1.5-2.5 MPa.
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- Application Of Or Painting With Fluid Materials (AREA)
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Abstract
Description
本发明涉及一种石油输送管道延长使用寿命的修复方法，属于流体传送装备技术领域。The invention relates to a repairing method for extending the service life of a petroleum conveying pipeline, and belongs to the technical field of fluid conveying equipment.
目前陆上油气管线基本均为钢制管线，大多数海管都存在不同程度的腐蚀，加之油田油品变化，油质复杂等原因带来的海管腐蚀隐患很大。为了安全运营，不得不将腐蚀严重的海管进行维修或更换，由此给在役油田带来的运营成本，产量、环境影响等方面压力较为突出。而油气管道隐患整改工作涉及单位多、投入大、难度高、任务重。为了安全运营，海总不得不将腐蚀严重的海管进行维修或更换，由此给在役油田带来的运营成本，产量、环境影响等方面压力较为突出。如何妥善解决油气管道在生命周期的末期进行维修/延寿的问题，已经成为一个严肃的课题摆在管道行业面前。At present, the onshore oil and gas pipelines are basically steel pipelines. Most of the seawater pipelines have different degrees of corrosion. In addition, the oil pipeline oils vary, and the oil quality is complicated. In order to operate safely, it is necessary to repair or replace the corroded sea pipe, which brings pressure on the operating cost, output and environmental impact of the in-service oil field. However, the rectification of hidden dangers in oil and gas pipelines involves many units, large investment, high difficulty, and heavy tasks. In order to operate safely, the sea has to repair or replace the corroded sea pipe, which brings pressure on the operating costs, output and environmental impact of the in-service oil field. How to properly solve the problem of oil and gas pipeline maintenance/life extension at the end of the life cycle has become a serious issue in front of the pipeline industry.
目前对于旧油气输送管线的维修/延寿主要分为开挖式与非开挖式。开挖式的缺点：修复后的钢制管线依然面临腐蚀问题(当前某些油田集输管线的寿命不超过1年)；开挖式修复涉及周边地区大量准备工作，会产生大量的经济/社会成本；征地费用；周边居民、企业、厂矿动迁费用；管线停运时间较长；经常需要政企联动，在某些人口密集地区，或占压、穿越情况，不具备开挖修复的条件。At present, the maintenance/extension of old oil and gas pipelines is mainly divided into excavation and non-excavation. Disadvantages of excavation: The repaired steel pipeline still faces corrosion problems (currently the life of some oilfield gathering pipelines is less than one year); excavation repair involves a large amount of preparatory work in the surrounding areas, which will generate a large number of economic/social Cost; land acquisition cost; surrounding residents, enterprises, factory mine relocation costs; pipeline outage time is long; often requires government-enterprise linkage, in some densely populated areas, or pressure, crossing conditions, does not have the conditions for excavation and repair.
发明内容：Summary of the invention:
本发明的目的是针对上述存在的问题提供一种石油输送管道延 长使用寿命的修复方法，可以在避免大范围地面开挖的情况下通过对钢管安装内衬来一次性解决管线内腐蚀的问题。修复速度快，安装工期预期仅为开挖法的15～20％。The object of the present invention is to provide a petroleum conveying pipeline extension for the above problems. The long service life repair method can solve the problem of corrosion in the pipeline at one time by installing the lining on the steel pipe without avoiding extensive ground excavation. The repair speed is fast, and the installation schedule is expected to be only 15-20% of the excavation method.
上述的目的通过以下技术方案实现：The above objectives are achieved by the following technical solutions:
一种石油输送管道延长使用寿命的修复方法，该方法包括以下步骤：A method for repairing the service life of an oil pipeline, the method comprising the following steps:
(1)制备修复使用的柔性耐腐蚀软管；(1) preparing a flexible corrosion-resistant hose for repair;
(2)切开需要修复的石油管道；(2) Cutting the oil pipeline that needs to be repaired;
(3)用与管道配套的机器人牵引出牵引绳；(3) Pulling out the traction rope with a robot matched with the pipeline;
(4)对待修复的管道进行清洗；(4) cleaning the pipeline to be repaired;
(5)用牵引绳牵引出步骤(1)中制备的修复使用的柔性耐腐蚀软管；(5) Pulling out the flexible corrosion-resistant hose used for repair in the step (1) with a traction rope;
(6)用压缩空气打开软管，使软管贴服在被修复钢管上；(6) Open the hose with compressed air to make the hose adhere to the repaired steel pipe;
(7)接上接扣，修复完成。(7) Attach the buckle and the repair is completed.
所述的石油输送管道延长使用寿命的修复方法，步骤(1)中所述的制备修复使用的柔性耐腐蚀软管的方法是首先采用编织机编织增强层，然后采用牵引机牵着从编织机出来的编织层，在编织层的上方在编织层管口由经过上挤出机和内涂模具挤出内层，在牵引力的作用下带有内层的编织层经过加热器，在内层塑化过程中编织层经过两侧的下挤出机与外涂模具挤出外层，一次出来成型的产品。The method for repairing the service life of the petroleum pipeline is extended, and the method for preparing the flexible corrosion-resistant hose used for repairing in the step (1) is first to use a braiding machine to weave the reinforcing layer, and then to take the weaving machine from the weaving machine. The weaving layer is formed by extruding the inner layer at the braided layer above the braid layer through the upper extruder and the inner coating die, and the inner layer of the braid is passed through the heater under the action of the traction force, and the inner layer is molded. During the process, the braided layer is extruded through the outer extruder and the outer coating die on both sides, and the product is molded once.
所述的石油输送管道延长使用寿命的修复方法，步骤(4)中所述的对待修复的管道进行清洗是采用清洗剂进行清洗，清洗剂的用量为150-250g/m2管道，所述的清洗剂按照重量份数包括甲醇12～22份，乙醇22～35份，脂肪酸甲酯乙氧基化物25～40份，聚丙烯酰胺12～22 份，氢氧化钠5～20份，烷基硫酸酯钠10～15份，香料0.5～3份，水55-60份。The method for repairing the service life of the petroleum pipeline, the cleaning of the pipeline to be repaired in the step (4) is cleaning with a cleaning agent, the amount of the cleaning agent is 150-250 g/m2, the cleaning The agent comprises 12 to 22 parts by weight of methanol, 22 to 35 parts of ethanol, 25 to 40 parts of fatty acid methyl ester ethoxylate, and 12 to 22 parts by weight of polyacrylamide. Parts, sodium hydroxide 5 to 20 parts, sodium alkyl sulfate 10 to 15 parts, spices 0.5 to 3 parts, water 55-60 parts.
所述的石油输送管道延长使用寿命的修复方法，步骤(6)中所述的压缩空气采用压力在1.5-2.5MPa的压缩空气。The oil transportation pipeline has a repairing method for prolonging the service life, and the compressed air described in the step (6) is compressed air having a pressure of 1.5-2.5 MPa.
1.本发明的修复速度快，安装工期预期仅为开挖法的15～20％。1. The repairing speed of the invention is fast, and the installation period is expected to be only 15-20% of the excavation method.
2.本发明的方法对管线正常运行影响小，在海工环境下，相对传统的钢管/柔性管方案，柔性复合内衬技术能将整体工程造价降低>40％。2. The method of the invention has little influence on the normal operation of the pipeline. In the offshore environment, the flexible composite lining technology can reduce the overall construction cost by >40% compared with the conventional steel pipe/flexible pipe scheme.
3.本发明的修复方法对环境影响极小，且全程无排放，解决了部分管道无法做开挖式修复，以及传统内衬技术不适用的问题。一劳永逸的解决老旧管线的腐蚀问题，彻底排除了隐患。为油气管线周边社会的安全与稳定提供保障。3. The repairing method of the invention has little impact on the environment, and has no emission throughout the whole process, and solves the problem that some pipes cannot be repaired by excavation and the traditional lining technology is not applicable. Solving the corrosion problem of old pipelines once and for all, completely eliminating hidden dangers. Provide security for the safety and stability of the society around oil and gas pipelines.
4.本发明的方法由于修复仅在待修复管线两端需要一定的操作空间，管线其它部位没有动土操作，对管线经过区域没有环境、土地、振动、噪声等影响。4. The method of the present invention requires only a certain operation space at both ends of the pipeline to be repaired due to the repair, and there is no earth moving operation in other parts of the pipeline, and there is no influence on the pipeline passing through the environment, land, vibration, noise, and the like.
一种石油输送管道延长使用寿命的修复方法，该方法包括以下步骤：A method for repairing the service life of an oil pipeline, the method comprising the following steps:
(1)制备修复使用的柔性耐腐蚀软管；(1) preparing a flexible corrosion-resistant hose for repair;
(2)切开需要修复的石油管道；(2) Cutting the oil pipeline that needs to be repaired;
(3)用与管道配套的机器人牵引出牵引绳；(3) Pulling out the traction rope with a robot matched with the pipeline;
(4)对待修复的管道进行清洗；(4) cleaning the pipeline to be repaired;
(5)用牵引绳牵引出步骤(1)中制备的修复使用的柔性耐腐蚀软管； (5) Pulling out the flexible corrosion-resistant hose used for repair in the step (1) with a traction rope;
(6)用压缩空气打开软管，使软管贴服在被修复钢管上；(6) Open the hose with compressed air to make the hose adhere to the repaired steel pipe;
(7)接上接扣，修复完成。(7) Attach the buckle and the repair is completed.
所述的石油输送管道延长使用寿命的修复方法，步骤(1)中所述的制备修复使用的柔性耐腐蚀软管的方法是首先采用涤纶长丝或尼龙长丝或者芳纶或涤纶长丝与尼龙或芳纶混合编织成增强层，然后采用牵引机牵着从编织机出来的编织层，在编织层的上方在编织层管口由经过上挤出机和内涂模具挤出内层，在牵引力的作用下带有内层的编织层经过加热器，在内层塑化过程中编织层经过两侧的下挤出机与外涂模具挤出外层，一次出来成型的产品。The method for repairing the service life of the petroleum pipeline, the method for preparing the flexible corrosion-resistant hose used for repairing in the step (1) is firstly using polyester filament or nylon filament or aramid or polyester filament and The nylon or aramid is woven into a reinforced layer, and then the woven layer is taken from the knitting machine by a tractor, and the inner layer is extruded at the braided layer above the woven layer by the upper extruder and the inner coating die. Under the action of traction, the inner layer of the braid is passed through the heater. During the inner plasticization process, the braid is extruded through the outer extruder and the outer coating die on both sides to form the product once.
所述的石油输送管道延长使用寿命的修复方法，步骤(4)中所述的对待修复的管道进行清洗是采用清洗剂进行清洗，清洗剂的用量为150-250g/m2管道，所述的清洗剂按照重量份数包括甲醇12～22份，乙醇22～35份，脂肪酸甲酯乙氧基化物25～40份，聚丙烯酰胺12～22份，氢氧化钠5～20份，烷基硫酸酯钠10～15份，香料0.5～3份，水55-60份。The method for repairing the service life of the petroleum pipeline, the cleaning of the pipeline to be repaired in the step (4) is cleaning with a cleaning agent, the amount of the cleaning agent is 150-250 g/m2, the cleaning The agent comprises 12 to 22 parts by weight of methanol, 22 to 35 parts of ethanol, 25 to 40 parts of fatty acid methyl ester ethoxylate, 12 to 22 parts of polyacrylamide, 5 to 20 parts of sodium hydroxide, and alkyl sulfate in parts by weight. 10 to 15 parts of sodium, 0.5 to 3 parts of spices, and 55-60 parts of water.
所述的石油输送管道延长使用寿命的修复方法，步骤(4)中所述的对待修复的管道进行清洗的方法是：The method for repairing the service life of the petroleum pipeline is extended, and the method for cleaning the pipeline to be repaired as described in the step (4) is:
所述的石油输送管道延长使用寿命的修复方法，步骤(6)中所述的压缩空气采用压力在1.5-2.5MPa的压缩空气。The oil transportation pipeline has a repairing method for prolonging the service life, and the compressed air described in the step (6) is compressed air having a pressure of 1.5-2.5 MPa.
以上的描述仅仅是本发明的具体实施例，不应被视为是唯一的实施例。显然，对于本领域的专业人员来说，在了解本发明内容和原理后，都可能在不背离本发明原理、结构的情况下，进行形式和细节上 的各种修正和改变，但是这些修正和改变仍在本发明的权利要求保护范围之内。 The above description is only a specific embodiment of the invention and should not be considered as the only embodiment. It will be apparent to those skilled in the art that the present invention may be carried out in the form and details without departing from the principles and structure of the invention. Various modifications and changes are possible, but such modifications and changes are still within the scope of the appended claims.
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| CN201510893239.0 | 2015-12-08 | ||
| CN201510893239.0A CN105423059A (en) | 2015-12-08 | 2015-12-08 | Repairing method for prolonging service life of oil delivery pipeline |
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| WO2017096579A1 true WO2017096579A1 (en) | 2017-06-15 |
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|---|---|---|---|---|
| CN111828770A (en) * | 2020-07-06 | 2020-10-27 | 刘静生 | Inner wall pre-repair pipeline for petroleum transportation |
| CN115463812A (en) * | 2022-10-26 | 2022-12-13 | 中海油（天津）管道工程技术有限公司 | In-service repair method for corrosion of inner wall of marine riser |
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| Publication number | Publication date |
|---|---|
| CN105423059A (en) | 2016-03-23 |
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