公开(公告)号：US6028236A

公开(公告)日：2000-02-22

申请号：US199481

申请日：1998-11-25

Applicant: Herve Toulhoat ,  Anne Sinquin

Inventor： Herve Toulhoat ,  Anne Sinquin

IPC: C10L3/00 ,  F16L55/24 ,  F17D1/05 ,  C07C7/20

CPC classification number: C10L3/00 ,  F16L55/24 ,  F17D1/05

Abstract: The process for slowing the growth and/or agglomeration of hydrates in a fluid comprising water and gases comprises adding gas hydrate growth and/or agglomeration inhibitors comprising an essentially water soluble polymer, characterized by a total number of rotational degrees of freedom per statistical repeat unit RDFTm of over 9, preferably over 10, and a degree of polymerization DP of a statistical repeat unit in the range 18/RDFTm to 200,000, preferably in the range 20/RDFTm to 100,000. The growth and/or agglomeration inhibitor(s) is/are generally incorporated into the fluid to be treated in a concentration of 0.05% to 5% by weight with respect to the amount of water in the medium.

Abstract translation: 包含水和气体的流体中减缓水合物的生长和/或附聚的方法包括加入包含基本上水溶性聚合物的气体水合物生长和/或附聚抑制剂，其特征在于每个统计重复单元的旋转自由度的总数 超过9，优选超过10的RDFTm和统计重复单元的聚合度DP在18 / RDFTm至200,000，优选在20 / RDFTm至100,000的范围内。 相对于培养基中的水量，生长和/或附聚抑制剂通常以0.05％至5％重量的浓度掺入待处理的流体中。

公开(公告)号：US5880319A

公开(公告)日：1999-03-09

申请号：US248477

申请日：1994-05-25

Applicant: Earle Dendy Sloan, Jr.

Inventor： Earle Dendy Sloan, Jr.

IPC: C09K8/52 ,  C10L3/00 ,  C07C7/20 ,  F17D1/05

CPC classification number: C10L3/00 ,  C09K8/52 ,  C09K2208/22 ,  Y10S585/95 ,  Y10T137/0329 ,  Y10T137/0391

Abstract: Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly useful in the natural gas and petroleum production, transportation and processing industry where gas hydrate formation can cause serious problems. Additives preferably contain one or more five member, six member and/or seven member cyclic chemical groupings. Additives include polymers having lactam rings. Additives can also contain polyelectrolytes that are believed to improve conformance of polymer additives through steric hinderance and/or charge repulsion. Additional additives include alkoxy compounds, and particularly those comprising ethoxy and or propoxy polymer blocks. Further additives include alcohols and oxazoline polymers which are preferably used in combination with polymers having lactam rings. Additives are useful in controlling clathrate hydrates in highly saline aqueous liquids.

Abstract translation: 讨论的是防止笼形水合物质量不利地阻碍易于包合的水合物形成的流体的可能流动的过程。 这个过程在天然气和石油生产，运输和加工业中特别有用，天然气水合物形成可能会导致严重的问题。 添加剂优选含有一个或多个五元件，六元件和/或七件循环化学品分组。 添加剂包括具有内酰胺环的聚合物。 添加剂还可以含有被认为通过空间阻碍和/或电荷排斥改善聚合物添加剂一致性的聚电解质。 另外的添加剂包括烷氧基化合物，特别是包括乙氧基和/或丙氧基聚合物嵌段的那些。 其它添加剂包括醇和恶唑啉聚合物，其优选与具有内酰胺环的聚合物组合使用。 添加剂可用于控制高盐水含水液体中的包合物水合物。

公开(公告)号：US5841010A

公开(公告)日：1998-11-24

申请号：US459643

申请日：1995-06-02

Applicant: Manese Rabeony ,  Dennis George Peiffer ,  Christine Ann Costello ,  Pamela Jean Wright ,  Karla Schall Colle ,  Larry Dalton Talley

Inventor： Manese Rabeony ,  Dennis George Peiffer ,  Christine Ann Costello ,  Pamela Jean Wright ,  Karla Schall Colle ,  Larry Dalton Talley

IPC: C09K8/52 ,  C09K8/528 ,  C10L1/10 ,  C10L1/12 ,  C10L1/18 ,  C10L1/188 ,  C10L1/22 ,  C10L1/24 ,  C10L3/06 ,  C07C7/20 ,  F17D1/05

CPC classification number: C10L1/1881 ,  C09K8/52 ,  C09K8/528 ,  C10L1/10 ,  C10L1/2437 ,  C10L3/06 ,  C09K2208/22 ,  C10L1/125 ,  C10L1/1824 ,  C10L1/1852 ,  C10L1/232 ,  Y10S585/95

Abstract: This invention is directed toward a method for inhibiting the formation (nucleation, growth and agglomeration) of clathrate hydrates. The method comprises adding into a mixture comprising hydrate forming substituents and water, an effective amount of a hydrate inhibitor selected from the group consisting of anionic, cationic, non-ionic and zwitterionic hydrate inhibitors. The hydrate inhibitor has a polar head group and a nonpolar tail group not exceeding 12 carbon atoms in the longest carbon chain.

Abstract translation: 本发明涉及一种抑制包合物水合物的形成（成核，生长和附聚）的方法。 该方法包括加入含有水合物形成取代基和水的混合物，有效量的选自阴离子，阳离子，非离子和两性离子水合物抑制剂的水合物抑制剂。 水合物抑制剂在最长碳链中具有极性头基和不超过12个碳原子的非极性尾基。

公开(公告)号：US5744665A

公开(公告)日：1998-04-28

申请号：US659550

申请日：1996-06-06

Applicant: Christine Ann Costello ,  Enock Berluche ,  Russell Harlan Oelfke ,  Larry Dalton Talley

Inventor： Christine Ann Costello ,  Enock Berluche ,  Russell Harlan Oelfke ,  Larry Dalton Talley

IPC: C09K8/52 ,  C10L3/06 ,  C10L3/10 ,  F17D1/05 ,  C07C9/00

CPC classification number: C09K8/52 ,  C10L3/06 ,  C10L3/10 ,  F17D1/05 ,  C09K2208/22 ,  Y10S585/95 ,  Y10T137/0391

Abstract: Novel maleimide copolymers have at least two monomeric units, a maleimide unit and a vinyl unit having a pendant group, the pendant group having two to twenty-one carbon atoms, at least one nitrogen atom and at least one oxygen atom. The copolymer has an average molecular weight between about 1,000 and about 6,000,000. Preferred maleimide copolymers include acrylamide/maleimide copolymers, N-vinyl amide/maleimide copolymers, vinyl lactam/maleimide copolymers, alkenyl cyclic imino ether/maleimide copolymers, and acryloylamide/maleimide copolymers. The substantially water soluble maleimide copolymers are useful for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents by reducing the rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream. The inhibitor can be used conveniently at low concentrations, for example in the range of from about 0.01% to about 5% by weight of the water present in the oil or gas stream, to effectively treat a petroleum fluid having a water phase.

Abstract translation: 新型马来酰亚胺共聚物具有至少两个单体单元，马来酰亚胺单元和具有侧基的乙烯基单元，侧基具有2至21个碳原子，至少一个氮原子和至少一个氧原子。 共聚物的平均分子量为约1,000至约6,000,000。 优选的马来酰亚胺共聚物包括丙烯酰胺/马来酰亚胺共聚物，N-乙烯基酰胺/马来酰亚胺共聚物，乙烯基内酰胺/马来酰亚胺共聚物，烯基环亚氨基醚/马来酰亚胺共聚物和丙烯酰胺/马来酰亚胺共聚物。 基本上水溶性的马来酰亚胺共聚物可用于通过降低石油流体物流中气体水合物晶体的成核，生长和/或附聚的速率来抑制在具有水合物形成成分的流体中形成笼形水合物，由此抑制形成 在输送石油流体的管道中存在水合物堵塞。 抑制剂可以以低浓度方便地使用，例如在油或气流中存在的水的约0.01重量％至约5重量％的范围内，以有效地处理具有水相的石油流体。

公开(公告)号：US5639925A

公开(公告)日：1997-06-17

申请号：US358140

申请日：1994-12-15

Applicant: Earle Dendy Sloan, Jr. ,  Richard Lee Christiansen ,  Joseph P. Lederhos ,  Jin Ping Long ,  Vaithilingam Panchalingam ,  Yahe Du ,  Amadeu Kun Wan Sum

Inventor： Earle Dendy Sloan, Jr. ,  Richard Lee Christiansen ,  Joseph P. Lederhos ,  Jin Ping Long ,  Vaithilingam Panchalingam ,  Yahe Du ,  Amadeu Kun Wan Sum

IPC: C09K8/52 ,  C10L3/00 ,  C07C7/20 ,  F17D1/05

CPC classification number: C10L3/00 ,  C09K8/52 ,  C09K2208/22 ,  Y10S585/95 ,  Y10T137/0329 ,  Y10T137/0391

Abstract: Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly useful in the natural gas and petroleum production, transportation and processing industry where gas hydrate formation can cause serious problems. Additives preferably contain one or more five member, six member and/or seven member cyclic chemical groupings. Additives include polymers having lactam rings. Additives can also contain polyelectrolytes that are believed to improve conformance of polymer additives through steric hinderance and/or charge repulsion. Also, polymers having an amide on which a C.sub.1 -C.sub.4 group is attached to the nitrogen and/or the carbonyl carbon of the amide may be used alone, or in combination with ring-containing polymers for enhanced effectiveness. Polymers having at least some repeating units representative of polymerizing at least one of an oxazoline, an N-substituted acrylamide and an N-vinyl alkyl amide are preferred.

Abstract translation: 讨论的是防止笼形水合物质量不利地阻碍易于包合的水合物形成的流体的可能流动的过程。 这个过程在天然气和石油生产，运输和加工业中特别有用，天然气水合物形成可能会导致严重的问题。 添加剂优选含有一个或多个五元件，六元件和/或七件循环化学品分组。 添加剂包括具有内酰胺环的聚合物。 添加剂还可以含有被认为通过空间阻碍和/或电荷排斥改善聚合物添加剂一致性的聚电解质。 此外，可以单独使用其上具有C1-C4基团的氨基和/或酰胺的羰基碳上的酰胺的聚合物，或与含环聚合物组合使用以提高有效性。 具有至少一些代表聚合至少一种恶唑啉，N-取代的丙烯酰胺和N-乙烯基烷基酰胺的重复单元的聚合物是优选的。

公开(公告)号：US5600044A

公开(公告)日：1997-02-04

申请号：US449151

申请日：1995-05-24

Applicant: Karla S. Colle ,  Christine A. Costello ,  Russell H. Oelfke ,  Larry D. Talley ,  John M. Longo ,  Enoch Berluche

Inventor： Karla S. Colle ,  Christine A. Costello ,  Russell H. Oelfke ,  Larry D. Talley ,  John M. Longo ,  Enoch Berluche

IPC: F17D1/05 ,  C09K8/52 ,  C10L3/06 ,  C07C7/20 ,  F15D1/00

CPC classification number: C09K8/52 ,  C10L3/06 ,  C09K2208/22 ,  Y10S585/95 ,  Y10T137/0329 ,  Y10T137/0391

Abstract: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method are substantially water soluble polymers formed from a N-substituted acrylamide having two nitrogen substituent groups, R.sub.1 and R.sub.2, where R.sub.1 is a hydrocarbon group having from one to ten carbon atoms and zero to four heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and combinations thereof, and R.sub.2 is a hydrogen atom or a hydrocarbon group having from one to ten carbon atoms selected from the group consisting of carbon, nitrogen, oxygen, and sulfur; alternatively, R.sub.1 and R.sub.2 may be linked to produce a cyclic ring having ten atoms comprising a combination of between three and ten carbon atoms and zero to four heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and combinations thereof. Some examples of such inhibitors include, but are not limited to, poly(N-ethylacrylamide), poly(N,N-diethylacrylamide), poly(N-methyl, N-acrylamide), poly(iso-propylacrylamide), poly(n-propylacrylamide), poly(N-cyclopentylacrylamide), poly(N-cyclohexylacrylamide), poly(acryloylpiperdine), poly(acryloylpiperdine), poly(acryloylmorpholine) and various N-substituted acrylamide copolymers.

Abstract translation: 公开了一种抑制在具有水合物形成成分的流体中形成笼形水合物的方法。 更具体地说，该方法可用于处理在管道中输送的天然气等石油流体流，以抑制管道中的水合物限制。 用于实施该方法的水合物抑制剂基本上是由具有两个氮取代基的N-取代丙烯酰胺R 1和R 2形成的水溶性聚合物，其中R 1是具有1至10个碳原子的烃基和0至4个选自 由氮，氧，硫及其组合构成的组，R2为氢原子或碳原子数为1〜10的选自碳，氮，氧，硫的烃基; 或者，R1和R2可以连接以产生具有10个原子的环，所述原子包含3至10个碳原子和0至4个选自氮，氧，硫及其组合的杂原子的组合。 这些抑制剂的一些实例包括但不限于聚（N-乙基丙烯酰胺），聚（N，N-二乙基丙烯酰胺），聚（N-甲基，N-丙烯酰胺），聚（异丙基丙烯酰胺），聚（n - 丙基丙烯酰胺），聚（N-环戊基丙烯酰胺），聚（N-环己基丙烯酰胺），聚（丙烯酰基哌啶），聚（丙烯酰基哌啶），聚（丙烯酰基吗啉）和各种N-取代的丙烯酰胺共聚物。

公开(公告)号：US5432292A

公开(公告)日：1995-07-11

申请号：US83108

申请日：1993-06-24

Applicant: Earle D. Sloan, Jr.

Inventor： Earle D. Sloan, Jr.

IPC: C09K8/52 ,  C10L3/00 ,  C07C7/20 ,  F17D1/05

CPC classification number: C10L3/00 ,  C09K8/52 ,  C09K2208/22 ,  Y10S585/95 ,  Y10T137/0329 ,  Y10T137/0391

Abstract: Discussed is a process for preventing clathrate hydrate masses from impeding the flow of fluid in a fluid system. An additive is contacted with clathrate hydrate masses in the system to prevent those clathrate hydrate masses from impeding fluid flow. The process is particularly useful in the natural gas and petroleum production, transportation and processing industry where gas hydrate formation can cause serious problems. Additives preferably contain one or more five member, six member and/or seven member cyclic chemical groupings. Additives include poly(N-vinyl-2-pyrrolidone) and hydroxyethylcellulose, either in combination or alone. Additives can also contain multiple cyclic chemical groupings having different size rings. One such additive is sold under the name Gaffix VC-713.

Abstract translation: 讨论了防止笼形水合物块阻碍流体系统中流体流动的过程。 添加剂与系统中的笼形水合物块接触，以防止这些笼形水合物块阻碍流体流动。 这个过程在天然气和石油生产，运输和加工业中特别有用，天然气水合物形成可能会导致严重的问题。 添加剂优选含有一个或多个五元件，六元件和/或七件循环化学品分组。 添加剂包括组合或单独的聚（N-乙烯基-2-吡咯烷酮）和羟乙基纤维素。 添加剂还可以包含具有不同尺寸环的多个循环化学组合。 一种这样的添加剂以Gaffix VC-713的名义出售。