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公开(公告)号：US11905458B2
公开(公告)日：2024-02-20
申请号：US17675747
申请日：2022-02-18
CPC分类号： C09K8/512 , C09K8/516 , E21B21/003
摘要： Lost circulation material (LCM) compositions may include a resin; an emulsifier selected from the group consisting of ethoxylated phenol, sodium salt of modified tall oil fatty amide, carboxylic acid terminated fatty polyamide, modified amidoamine, tall oil fatty acid, oxidized tall oil fatty amidoamine, ether carboxylic acid, and combinations thereof; a crosslinker, a cementitious and/or weighting agent; a retarder; a dispersant; and a silicon-based defoamer. The LCM compositions may have a thickening time of from about 3 hours than about 6 hours by reaching a Bearden consistency of 100 Bc. Methods of eliminating or reducing lost circulation in a lost circulation zone from a well may include introducing these LCM compositions into the well.
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公开(公告)号：US11739250B2
公开(公告)日：2023-08-29
申请号：US17185000
申请日：2021-02-25
发明人： Ali Al-Safran , Khawlah A. Alanqari , Vikrant Wagle , Abdulwahab Al-Joher , Abdullah S. Al-Yami
IPC分类号： C09K8/512 , E21B21/00 , E21B33/138 , C09K8/504
CPC分类号： C09K8/512 , C09K8/5045 , E21B21/003 , E21B33/138
摘要： Lost circulation material (LCM) compositions may include an epoxy resin, an emulsifier comprising a polyaminated fatty acid, water, a crosslinker, and an optional cementitious and/or weighting agent. These LCM compositions may have a density of from about 63 pounds per cubic foot (pcf) to about 99 pcf and may be capable of being injected through a drill bit of a drill string into a lost circulation zone in wellbores. Corresponding methods of eliminating or reducing lost circulation in a lost circulation zone from a well may include introducing these LCM compositions into the well.
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公开(公告)号：US11370956B2
公开(公告)日：2022-06-28
申请号：US16718784
申请日：2019-12-18
IPC分类号： C09K8/508 , C08L63/00 , E21B21/00 , E21B33/138 , C09K8/504
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：US20210403792A1
公开(公告)日：2021-12-30
申请号：US16914120
申请日：2020-06-26
摘要： A sulfate-resistant cement composition may contain calcium magnesium aluminum oxide silicate, brownmillerite, dolomite, periclase, and calcium aluminum oxide. The composition may contain the calcium aluminum oxide in an amount in the range of 0.01 to 2.0 wt. %. The composition may contain the brownmillerite in an amount of the range of 20 to 30 wt. %.
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公开(公告)号：US20210189219A1
公开(公告)日：2021-06-24
申请号：US16718784
申请日：2019-12-18
IPC分类号： C09K8/508 , C08L63/00 , C09K8/504 , E21B33/138 , E21B21/00
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：US20230295484A1
公开(公告)日：2023-09-21
申请号：US17675747
申请日：2022-02-18
CPC分类号： C09K8/512 , C09K8/516 , C09K23/018
摘要： Lost circulation material (LCM) compositions may include a resin; an emulsifier selected from the group consisting of ethoxylated phenol, sodium salt of modified tall oil fatty amide, carboxylic acid terminated fatty polyamide, modified amidoamine, tall oil fatty acid, oxidized tall oil fatty amidoamine, ether carboxylic acid, and combinations thereof; a crosslinker; a cementitious and/or weighting agent; a retarder; a dispersant; and a silicon-based defoamer. The LCM compositions may have a thickening time of from about 3 hours than about 6 hours by reaching a Bearden consistency of 100 Bc. Methods of eliminating or reducing lost circulation in a lost circulation zone from a well may include introducing these LCM compositions into the well.
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公开(公告)号：US11624020B1
公开(公告)日：2023-04-11
申请号：US17564439
申请日：2021-12-29
摘要： A method of reducing lost circulation includes introducing a lost circulation solution comprising Saudi Arabian volcanic ash, a curing agent, and a resin into a subsurface formation through a wellbore, wherein the Saudi Arabian volcanic ash comprises SO3, CaO, SiO2, Al2O3, Fe2O3, MgO, and K2O; and allowing the lost circulation solution to thicken within the subsurface formation, thereby forming a barrier between the subsurface formation and the wellbore to reduce lost circulation.
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公开(公告)号：US11618842B2
公开(公告)日：2023-04-04
申请号：US17014148
申请日：2020-09-08
摘要： A method includes introducing an epoxy resin system to a wellbore defect in a wellbore. The epoxy resin system comprises a polyhedral oligomeric silsesquioxane (POSS) epoxy resin with at least one reactive group and a curing agent. The method includes maintaining the epoxy resin system in the wellbore such that a cured epoxy resin system product forms in the wellbore defect.
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公开(公告)号：US20220073807A1
公开(公告)日：2022-03-10
申请号：US17014148
申请日：2020-09-08
摘要： A method includes introducing an epoxy resin system to a wellbore defect in a wellbore. The epoxy resin system comprises a polyhedral oligomeric silsesquioxane (POSS) epoxy resin with at least one reactive group and a curing agent. The method includes maintaining the epoxy resin system in the wellbore such that a cured epoxy resin system product forms in the wellbore defect.
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公开(公告)号：US11015108B1
公开(公告)日：2021-05-25
申请号：US16822651
申请日：2020-03-18
IPC分类号： E21B33/138 , E21B21/00 , C09K8/504 , C04B28/02
摘要： A method of reducing lost circulation in a wellbore includes introducing an activation solution including an aqueous solution, Na2SiO3, NaOH, and one or both of CaCO3 or Mn3O4 into the wellbore. The method further includes introducing Saudi Arabian volcanic ash into the wellbore. The Saudi Arabian volcanic ash comprises SO3, CaO, SiO2, Al2O3, Fe2O3, MgO, and K2O. The method further includes allowing the Saudi Arabian volcanic ash to contact the activation solution in the wellbore, thereby forming a geopolymer barrier between the wellbore and a subsurface formation to reduce lost circulation in the wellbore.
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