CN102959301B - 具有疏水壁的管道输送系统 - Google Patents
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Abstract
一种管道系统,其包括:构成系统外部的管道,其中所述管道包括内管壁;所述内管壁内侧的疏水层;和所述疏水层以内及所述内管壁以内的液体,所述液体包括水和一种或多种烃。
Description
技术领域
本发明涉及管道系统及其使用方法。
背景技术
PCT专利申请WO 2010/17082公开了用热塑性嵌段共聚物(TBC)制备的印刷板、管衬、输送带、可充气物品、可折叠容器、防护服和其它类型的涂覆织物。这种TBC可以是热塑性聚氨酯(TPU)、共聚酯(COPE)、共聚酰胺(COPA)或聚氨酯脲(TPUU)。它也是印刷板或印刷套和用于通道或管道的原位硫化衬里。所述TBC为(I):(1)疏水性多元醇或多胺、(2)多异氰酸酯或芳香族二羧酸和(3)含2-20个碳原子的直链增量剂的反应产物,或(II):(1)疏水性多元醇或多胺和(2)羧酸封端的远螯聚酰胺序列的反应产物。PCT专利申请WO 2010/17082在这里作为参考全文引用。
美国专利US 7,485,343公开了一种制备疏水性涂层方法,其中制备包含金属醇盐、溶剂、碱性催化剂、氟代烷基化合物和水的前体溶胶,将所述前体溶胶作为膜沉积到表面如基质或管道上,加热所述膜并将所述膜暴露于疏水性硅烷化合物以形成接触角大于约150度的疏水涂层。膜的接触角可以通过如下方法控制:通过暴露于紫外辐射以减小接触角,和随后暴露于疏水性硅烷化合物以增加接触角。美国专利US 7,485,343在这里作为参考全文引用。
美国专利US 7,344,783公开了一种疏水性涂层,其包括固体倍半氧烷硅树酯以增加耐用性。所述疏水性涂层为增加相对于表面(优选玻璃)的接触角的任何组合物。所述疏水性涂层的耐用性优选增加至一年半,更优选增加至三年。美国专利US 7,344,783在这里作为参考全文引用。
发明内容
本发明的一个方面提供一种管道系统,其包括:构成系统外部的管道,其中所述管道包括内管壁;所述内管壁内侧的疏水层或从所述管道壁内延伸至所述内管壁内侧的疏水层;和所述疏水层以内及所述内管壁以内的流体-固体物流,所述流体-固体物流包括水、一种或多种烃和生产的固体。
具体地,本发明提供一种管道系统,其包括:构成系统外部的管道,其中所述管道包括内管壁;所述内管壁内侧的疏水层,其中所述疏水层包括运动水合物抑制剂;和所述疏水层以内及所述内管壁以内的流体-固体物流,所述流体-固体物流包括水、一种或多种烃和一种或多种其它生产物流组分,
在一些实施方案中,其中所述管道安装在海底环境中。
在一些实施方案中,其中所述流体-固体物流包括原油。
在一些实施方案中,其中所述管道安装在环境温度小于约70℉的环境下。
在一些实施方案中,其中所述管道安装在环境温度小于约60℉的环境下。
在一些实施方案中,其中所述疏水层包括自组装单层,所述自组装单层包含暴露疏水尾的分子。
在一些实施方案中,其中所述疏水层包括自组装单层,所述自组装单层包含在其尾端含有选自烃、链烷烃、链烯烃、链炔烃、环烷烃、环烯烃、环炔烃、芳烃和芳基、C8-C18硫醇、胺和磷酸酯的官能团的分子。
另外,本发明提供一种输送流体的方法,其包括:提供管道,所述管道包括内管壁;为所述内管壁内侧设置疏水层,其中所述疏水层包括运动水合物抑制剂;和使流体-固体物流流过所述管道,所述流体位于疏水层以内及内管壁以内,所述流体-固体物流包括水、一种或多种烃和一种或多种其它生产物流组分。
在一些实施方案中,其中输送物流为一种或多种海底油井物流。
在一些实施方案中,所述方法进一步包括在环境温度小于约55℉的海底环境中安装所述管道。
在一些实施方案中,所述方法进一步包括将管道的一端连接至水体上的浮动结构。
在一些实施方案中,其中所述浮动结构选自半潜水性结构、单柱式平台、FPSO和TLP。
在一些实施方案中,其中所述流体-固体物流包括原油。
本发明的优点包括如下的一项或多项:
减少沉积物如水合物在管道内壁上的形成;
在沉积物明显减少的条件下输送生产的流体;
在没有沉积物的条件下输送生产的流体;
减小清管需要的力;和/或
当清管时产生流体浆液。
附图说明
图1为按照这里所公开的实施方案的自组装单层实例。
具体实施方式
一方面,这里所公开的实施方案涉及防止水合物堵塞管道的系统和方法。具体地,这里所公开的一些实施方案涉及具有疏水性内壁的管线和生产该管线以防止水合物堵塞的方法。这里所公开的其它实施方案涉及具有疏水合物内壁的管线和制备该管线以防止水合物堵塞的方法。
另一方面,这里所公开的实施方案涉及修整管道内壁以抑制水合物形成的方法。具体地,这里所公开的一些实施方案涉及修整管线的疏水性内壁的方法,所述方法包括化学浸泡。
在本发明的一些实施方案中,将管道(例如钢管、管线、流动管线等)的内壁改性为疏水或疏水合物的,以防止水合物堵塞。通常,水合物为由烃和水在低温和高压条件下形成的晶体笼形化合物(即包合物)。但水合物也可以由非烃物质如二氧化碳、氮和硫化氢在合适的温度和压力条件下形成。这里所应用的术语“烃”可以包括用于形成水合物的烃和非烃。例如,烃通常可以包括例如烷基、烯基、炔基、环烷基、芳基、烷芳基和芳烷基。形成水合物的烃的具体例子包括但不限于乙烯、乙炔、丙烯、甲基乙炔、正丁烷、异丁烯、1-丁烯、反-2-丁烯、顺-2-丁烯、异丁烯、丁烷混合物、异戊烷、戊烯、氩、氪、氙和它们的混合物。术语“烃”也可以指天然气。天然气烃可以包括例如甲烷、乙烷、丙烷、丁烷、氮气、氧气、二氧化碳、一氧化碳、氢和硫化氢。
水合物的形成需要水的存在(即使少量)、低于水合物形成限的温度、和高于水合物形成压力的压力。保持水、气和物流元素混合的湍动会增加水合物的形成速率。通过将内壁改性为疏水的,所述壁将亲烃而不亲水。因此,流过管道的烃将会润湿内壁,并防止水合物沉积,从而使所述内壁具有疏水合物性。这比只向流过管道的物流中注入化学抑制剂的传统系统有利,因为不需要连续加入化学品。
这里所应用的术语“疏水的”指不易溶解(即缔合)于水的倾向。一个部分通过优先与其它疏水性部分或分子键合或缔合由此排斥水分子,就可以具有疏水性。术语“疏水合物的”指不被水合物润湿或覆盖的倾向。
本领域的技术人员将会认识到,在对管壁进行改性(例如涂覆)前准备管道的内壁表面是有利的。特别地,钢制管道的表面准备希望确保获得用于键合的OH-基团。钢与各种表面改性或涂层的主要键合机理是通过钢组成中发现的OH-基团进行。因此,表面准备通常包括脱除钢管道表面发现的任何氧化物层和/或其它杂质(如污垢),以暴露或形成用于键合的OH-基团。表面准备可以包括热清洁步骤、化学清洁或蚀刻步骤、机械清洁步骤、喷砂步骤或它们的组合。例如,表面准备过程可以包括热和化学清洁步骤,该步骤包括在700℉下用常规的卤化溶剂蚀刻所述表面2-4小时,和然后用特定粒度的氧化铝和二氧化钛颗粒对所述表面进行喷砂以在所述表面上形成所需的锚定图案。在其它情况下,机械清洁表面(例如已经电子抛光的表面)可能只需要用乙醇冲洗一下就可以准备好用于涂覆的表面了。
在本发明的一些实施方案中,在表面准备步骤之后和改性或涂覆步骤之前,可能需要涂底漆步骤。这种涂底漆步骤可以包括用底漆分子(例如硅氧烷)喷涂(或流过)所述管道,该底漆分子用于与暴露的OH-基(来自于表面准备步骤)和随后施加的涂层键合。
在一个实施方案中,通过将自组装分子附着于管道内壁以形成自组装单层(SAM)而将管道内壁改性为疏水的或疏水合物的。例如,可以由(可商购的)14-苯基-11-十四烯-1-醇合成14-苯基-1-十四烷硫醇。可以将化学性质与水合物抗凝聚分子类似的C8-硫醇至C18-硫醇或其它SAM选择性吸附在内壁界面上以构成有组织和有取向的单层。一些SAM可以在小于200℉的温度和大气压下应用。
抗凝聚通常用于防止小的水合物凝聚为大的水合物晶体,从而使小的水合物可以泵送通过管道。可涂覆于管道内壁的抗凝聚分子的例子包括溴化三丁基十六烷基溴化三丁基十六烷基铵和其它烷基化铵、或锍化合物、两性离子化合物如R(CH3)2N+-(CH2)4-SO3 31。
图1:
参考图1,带有疏水尾的分子10附着于基质12上以形成SAM。在一个优选的实施方案中,基质12为管道(例如管线)的内壁。每个分子10具有头端14和尾端16。头端14包括选择用来与基质材料12连接的官能团。基质材料可以包括铬钢、低合金钢、钛钢、不锈钢、在常规商购钢制管线中可以找到的任何其它钢合金、耐腐蚀合金(CRA)、带有金覆盖层的CRA、或用于形成管道的其它金属。在头端14上应用的合适的官能团包括例如14-苯基-1-十四烷硫醇。尾端16包括链17和任选包括选择用来在基质12上提供疏水性SAM的官能团18。在尾端16上应用的合适官能团18包括烃,如烷烃、烯烃、炔烃、环烷烃、环烯烃、环炔烃和芳烃如芳基。另外,C8-C18硫醇、胺和磷酸酯为可用于在基质材料上使管道疏水的疏水性SAM。
在另一个实施方案中,通过向内壁施加等离子体生成的涂层而将管道内壁改性为疏水的或疏水合物的。等离子体涂层材料和方法的例子可以在美国专利US 7,351,480和US7,052,736中找到,它们在这里作为参考全文引用。
在某些实施方案中,可能需要对管道内壁进行修整。例如,所述壁的疏水性和疏水合物性可能会在水合物补充期间或随时间劣化。因此,通过调节和/或化学浸泡,所述内壁可以重获损失掉的所需疏水性和疏水合物性。
本发明的实施方案比向流过管道或管线的物流中注入化学品的传统系统(即化学注入系统)更有优势。在化学注入系统中,用于防止水合物堵塞的化学品被流过管道的物流冲走,因此必须连续添加化学品。有利地,本发明的实施方案不需要连续加入化学品来防止水合物堵塞。
虽然已经结合有限数量的实施方案对本发明进行了描述,但本领域的技术人员在受益于本发明后,将会理解可以设计不偏离本发明范围的其它实施方案。因此,本发明的范围应该只由所附的权利要求书限定。
Claims (14)
1.管道系统,其包括:
构成系统外部的管道,其中所述管道包括内管壁;
所述内管壁内侧的疏水层,其中所述疏水层包括运动水合物抑制剂;和
所述疏水层以内及所述内管壁以内的流体-固体物流,所述流体-固体物流包括水、一种或多种烃和生产的固体。
2.如权利要求1的管道系统,其中所述管道安装在海底环境中。
3.如权利要求1或2的管道系统,其中所述流体-固体物流包括原油。
4.如权利要求1或2的管道系统,其中所述管道安装在环境温度小于70℉的环境下。
5.如权利要求1或2的管道系统,其中所述管道安装在环境温度小于60℉的环境下。
6.如权利要求1或2的管道系统,其中所述疏水层包括自组装单层,所述自组装单层包含暴露疏水尾的分子。
7.如权利要求1或2的管道系统,其中所述疏水层包括自组装单层,所述自组装单层包含在其尾端含有选自烃、C8-C18硫醇、胺和磷酸酯的官能团的分子。
8.权利要求7的管道系统,其中所述烃包括链烷烃、链烯烃、链炔烃、环烷烃、环烯烃、环炔烃和芳烃。
9.一种输送流体的方法,其包括:
提供管道,所述管道包括内管壁;
为所述内管壁内侧设置疏水层,其中所述疏水层包括运动水合物抑制剂;和
使流体-固体物流流过所述管道,所述流体位于疏水层以内及内管壁以内,所述流体-固体物流包括水、一种或多种烃和生产的固体。
10.如权利要求9的方法,其中输送流体为一种或多种海底油井物流。
11.如权利要求9或10的方法,进一步包括在环境温度小于55℉的海底环境中安装所述管道。
12.如权利要求9或10的方法,进一步包括将管道的一端连接至水体上的浮动结构。
13.如权利要求12的方法,其中所述浮动结构选自半潜水性结构、单柱式平台、FPSO和TLP。
14.如权利要求9或10的方法,其中所述流体-固体物流包括原油。
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US35819910P | 2010-06-24 | 2010-06-24 | |
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PCT/US2011/041192 WO2011163190A1 (en) | 2010-06-24 | 2011-06-21 | Pipe transport system with hydrophobic wall |
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NZ717494A (en) * | 2013-09-20 | 2020-07-31 | Baker Hughes Inc | Method of inhibiting fouling on a metallic surface using a surface modifying treatment agent |
BR112016005454B1 (pt) | 2013-09-20 | 2022-02-08 | Baker Hughes Incorporated | Método para tratar um poço que penetra em uma formação subterrânea |
BR112016005651B1 (pt) | 2013-09-20 | 2022-02-08 | Baker Hughes Incorporated | Método de tratamento de uma formação subterrânea silicosa ou contendo óxido de metal (m) penetrada por um poço |
US20150260348A1 (en) * | 2014-03-12 | 2015-09-17 | Larry D. Talley | System and Method for Inhibiting Hydrate Film Growth On Tubular Walls |
WO2016168306A2 (en) | 2015-04-15 | 2016-10-20 | Invista North America S.A.R.L. | Hydrophobic thermoplastic nylon compositions, articles and methods for making |
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NO20130120A1 (no) | 2013-01-21 |
AU2011271108A1 (en) | 2013-01-10 |
CN102959301A (zh) | 2013-03-06 |
US8814473B2 (en) | 2014-08-26 |
NO346520B1 (no) | 2022-09-19 |
BR112012032799A2 (pt) | 2016-11-22 |
US20130087207A1 (en) | 2013-04-11 |
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