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公开(公告)号：WO2021257869A8
公开(公告)日：2021-12-23
申请号：PCT/US2021/037888
申请日：2021-06-17
发明人： HUANG, Jin , LIANG, Feng , LI, Wengang
IPC分类号： C09K8/03 , C09K8/504 , C09K8/506 , C09K8/508 , C09K8/512 , C09K8/516 , C01B2204/04 , C01B2204/32 , C01B32/194 , C01B32/198 , C01P2004/24 , C09K2208/10 , C09K8/502 , C09K8/5045 , E21B43/16
摘要： A graphene oxide Janus nanosheets relatively permeability modifier (RPM) for carbonate formations. The graphene oxide Janus nanosheets RPM may be used to treat a water and hydrocarbon producing carbonate formation to reduce water permeability in the formation and increase the production of hydrocarbons, lire graphene oxide Janus nanosheet RPM includes a first side having negatively charged functional groups and a second side having alkyl groups. The alkyl groups may include C8 to C30 alkyls. The negatively charged functional groups may include carboxyl groups, epoxy groups, and hydroxyl groups. Methods of reducing water permeability of a carbonate formation using the graphene oxide Janus nanosheets RPM and methods of manufacturing the graphene oxide Janus nanosheets RPM are also provided.
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公开(公告)号：WO2021145897A1
公开(公告)日：2021-07-22
申请号：PCT/US2020/014159
申请日：2020-01-17
IPC分类号： E21B33/13 , E21B33/12 , E21B29/10 , C09K8/50 , C09K8/5045 , C09K8/508 , C09K8/516 , E21B21/002 , E21B33/138
摘要： Treatment material for a wellbore operation can be mixed with a metal material coated with a layer that is controllably activated to release the metal material downhole in a wellbore. The wellbore treatment material can be mixed with the metal material prior to being positioned downhole in the wellbore.
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公开(公告)号：WO2021257877A1
公开(公告)日：2021-12-23
申请号：PCT/US2021/037900
申请日：2021-06-17
发明人： HUANG, Jin , LIANG, Feng , LI, Wengang
IPC分类号： C09K8/03 , C09K8/504 , C09K8/506 , C09K8/508 , C09K8/512 , C09K8/516 , B82Y35/00 , B82Y40/00 , C01B32/182 , C01B32/198 , C09K2208/10 , C09K8/426 , C09K8/467 , C09K8/5045
摘要： A chemical gel system having a polymer and a graphene oxide Janus nanosheets crosslinker for treating thief zones in carbonate formations. The polymer and graphene oxide Janus nanosheets crosslinker may form a crosslinked polymer gel to reduce or prevent water production via thief zones during hydrocarbon production. The graphene oxide Janus nanosheets crosslinker includes a first side having negatively charged functional groups and a second side having amines. The negatively charged functional groups may include carboxyl groups, negatively charged oxygen groups, and hydroxyl groups. Methods of reducing water production in a thief zone using the graphene oxide J anus nanosheets crosslinker and methods of manufacturing the graphene oxide Janus nanosheets crosslinker are also provided.
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公开(公告)号：WO2021196740A1
公开(公告)日：2021-10-07
申请号：PCT/CN2020/136594
申请日：2020-12-15
申请人： 中国石油大学（华东）
IPC分类号： C09K8/512 , C09K8/516 , E21B33/13 , E21B43/26 , C09K8/5045 , C09K8/5083 , E21B43/261
摘要： 本申请公开了一种暂堵剂及其制备方法、以及高温储层暂堵转向压裂的方法，所述暂堵剂包括以下质量分数的组分：丙烯酰胺5%、复合交联剂1%、锂皂石1%、过硫酸铵0.1%以及水92.9%。
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公开(公告)号：WO2021257876A1
公开(公告)日：2021-12-23
申请号：PCT/US2021/037897
申请日：2021-06-17
发明人： HUANG, Jin , LIANG, Feng , LI, Wengang
IPC分类号： C09K8/03 , C09K8/504 , C09K8/506 , C09K8/508 , C09K8/512 , C09K8/516 , C09K2208/10 , C09K8/502 , C09K8/5045 , E21B43/16
摘要： A silicon oxide Janus nanosheets relatively permeability modifier (RPM) for carbonate and sandstone formations. The silicon oxide Janus nanosheets RPM may be used to treat a water and hydrocarbon producing carbonate or sandstone formation to reduce water permeability in the formation and increase the production of hydrocarbons. The silicon oxide Janus nanosheets RPM for carbonate formations includes a first side having negatively charged functional groups and a second side having alkyl groups. The silicon oxide Janus nanosheets RPM for sandstone formations includes a first side having positively charged functional groups and a second side having alkyl groups. The negatively charged functional groups may include a negatively charged oxygen group groups and hydroxyl groups. The positively charged functional groups may include amino groups and an amine. Methods of reducing water permeability using the silicon oxide Janus nanosheets RPM and methods of manufacturing the silicon oxide Janus nanosheets RPM are also provided.
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公开(公告)号：WO2021257505A1
公开(公告)日：2021-12-23
申请号：PCT/US2021/037327
申请日：2021-06-15
发明人： BOUL, Peter , LIANG, Feng , RASNER, Diana
IPC分类号： C09K8/504 , C09K8/506 , C09K8/508 , C09K8/5045 , C09K8/5083
摘要： A well treatment composition for use in a hydrocarbon-bearing reservoir comprising a reversible aminal gel composition is disclosed. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; and a polar aprotic organic solvent. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir. The gel state is stable in the hydrocarbon-bearing reservoir at a temperature similar to a temperature of the hydrocarbon-bearing reservoir, and the gel state is operable to return to the liquid state responsive to a change in the hydrocarbon-bearing reservoir selected from the group consisting of: a decrease in pH in the hydrocarbon-bearing reservoir and an addition of excess metal salt composition in the hydrocarbon-bearing reservoir.
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7.发明申请
公开(公告)号：WO2021126300A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/028050
申请日：2020-04-14
IPC分类号： C09K8/50 , C04B26/14 , C09K8/44 , C08L63/00 , C09K8/5045 , C09K8/5086 , E21B21/003 , E21B33/138
摘要： Lost circulation material (LCM) compositions for sealing lost circulation zones in wellbores may include an epoxy resin, a curing agent, an amide accelerator, and calcium carbonate having an average particle size of from 1,000 microns to 10,000 micron. The epoxy resin includes at least one of 2,3-epoxypropyl-o-tolyl ether, C12-C14 alkyl glycidyl ether, 1,6-hexanediol diglycidyl ether, butyl glycidyl ether, or cyclohexanedimethanol diglycidyl ether. The epoxy resin can also include bisphenol-A-epichlorohydrin epoxy resin. Methods of treating a lost circulation zone of a wellbore include injecting the LCM compositions into the lost circulation zone and curing the LCM compositions, where the LCM compositions include an epoxy resin, a curing agent, an amide accelerator, and calcium carbonate having an average particle size of from 1,000 microns to 10,000 microns.
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公开(公告)号：WO2022268087A1
公开(公告)日：2022-12-29
申请号：PCT/CN2022/100217
申请日：2022-06-21
申请人： 西南石油大学
IPC分类号： C09K8/035 , C09K8/508 , C09K8/514 , C09K8/24 , C09K8/88 , C09K8/90 , C09K8/42 , C08F292/00 , C08F8/30 , C09K2208/10 , C09K8/03 , C09K8/426 , C09K8/5045 , C09K8/5086 , C09K8/882 , C09K8/885
摘要： 一种抗高温二氧化硅接枝叔胺纳米封堵剂及水基钻井液，属于油气田钻井技术领域，所述抗高温二氧化硅接枝叔胺纳米封堵剂以含羟基的肼类化合物、二烯丙基类化合物、烯胺类化合物、含氨基的硅烷偶联剂为原料，通过改性二氧化硅，用分步合成法合成。本发明提供的抗高温二氧化硅接枝叔胺制成的封堵剂，其粒径在58-280nm之间，封堵性能相比于同类封堵剂性能有显著提升，除了其封堵性能之外，其外部的多个叔胺支链还具有很强的吸附性能和抑制性能，该封堵剂抗高温，可应用于深井、超深井中。该封堵剂还具有，原料易得，价格便宜，其等优点，所提供的合成方法稳定可靠，简单快捷，适用于工业化生产。
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公开(公告)号：WO2022006050A1
公开(公告)日：2022-01-06
申请号：PCT/US2021/039518
申请日：2021-06-29
IPC分类号： C09K8/504 , C09K8/506 , E21B33/138 , C09K2208/10 , C09K8/5045
摘要： A method and a system for preventing water production in subterranean formations are provided. An exemplary system disclosed a water shutoff material for a wellbore. The water shutoff material includes a gel formed from an acidic suspension of nanosilica particles and an activator.
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10.发明申请
公开(公告)号：WO2022005962A1
公开(公告)日：2022-01-06
申请号：PCT/US2021/039362
申请日：2021-06-28
发明人： ZHAO, Weishu , HUANG, Jin , LIANG, Feng , LI, Wengang
IPC分类号： C09K8/504 , C09K8/508 , C09K8/512 , C09K8/516 , C09K8/5045
摘要： In accordance with one or more embodiments of the present disclosure, a low-density treatment fluid includes a base water-control system and at least one light-weight filler material. The base water-control system may include an inorganic material system comprising an aqueous colloidal silica and a water-soluble chemical activator for gelling the colloidal silica, or the base water-control system may include an organic material system comprising of polymeric material. The low-density treatment fluid may have a density of from 0.1 g/cm3 to 0.75 g/cm3. Also described are methods of recovering a target fluid from a subterranean cavity using such a low-density treatment fluid.
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