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公开(公告)号：US11548787B2
公开(公告)日：2023-01-10
申请号：US16904275
申请日：2020-06-17
发明人： Jin Huang , Feng Liang , Wengang Li
摘要： A chemical gel system having a polymer and a silicon oxide Janus nanosheets crosslinker for treating thief zones in carbonate formations. The polymer and silicon oxide Janus nanosheets crosslinker may form a crosslinked polymer gel to reduce or prevent water production via thief zones during hydrocarbon production. The silicon 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 negatively charged oxygen groups and hydroxyl groups. Methods of reducing water production in a thief zone using the silicon oxide Janus nanosheets crosslinker and methods of manufacturing the silicon oxide Janus nanosheets crosslinker are also provided.
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公开(公告)号：US11427752B2
公开(公告)日：2022-08-30
申请号：US17228029
申请日：2021-04-12
发明人： Leiming Li , Feng Liang , Tao Chen
IPC分类号： C09K8/68 , C02F1/52 , C09K8/03 , C09K8/60 , C09K8/74 , C09K8/88 , C02F103/08 , C09K8/508 , C09K8/506 , C09K8/86 , C02F101/10
摘要： Embodiments of the present disclosure are directed to a method of producing a viscoelastic surfactant (VES) fluid, the VES fluid comprising desulfated seawater. The method of producing the VES fluid comprises adding an alkaline earth metal halide to seawater to produce a sulfate precipitate. The method further comprises removing the sulfate precipitate to produce the desulfated water. The method further comprises adding a VES and one or more of a nanoparticle viscosity modifier or a polymeric modifier to the desulfated seawater. Other embodiments are directed to VES fluids that maintain a viscosity greater than 10 cP at temperatures above 250° F.
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公开(公告)号：US20220112422A1
公开(公告)日：2022-04-14
申请号：US17494387
申请日：2021-10-05
发明人： Feng Liang , Hui-Hai Liu , Yanhui Han , Kirk M. Bartko , Rajesh Kumar Saini
摘要： A subterranean zone can be treated by introducing a mixture of an acid-generating material and a proppant (for example, in a pad fluid or a pre-pad fluid) to the subterranean zone. Fractures and microfractures are created in the subterranean zone using the mixture of the acid-generating material and the proppant. The proppant is positioned within the fractures and microfractures to keep them open.
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公开(公告)号：US11230658B2
公开(公告)日：2022-01-25
申请号：US16901859
申请日：2020-06-15
发明人： Peter Boul , Feng Liang , Diana Rasner
IPC分类号： C09K8/035 , C09K8/467 , C09K8/504 , C09K5/06 , C09K8/57 , C09K8/575 , C04B24/30 , C04B28/02 , C08G73/02 , C08G73/06 , C08L79/02 , C08L79/04 , C09K8/42 , C09K8/56 , E21B33/138 , C09K8/03 , C09K8/506
摘要： A well treatment composition for use in a hydrocarbon-bearing reservoir comprising a reversible aminal gel composition. 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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公开(公告)号：US20200308467A1
公开(公告)日：2020-10-01
申请号：US16901859
申请日：2020-06-15
发明人： Peter Boul , Feng Liang , Diana Rasner
IPC分类号： C09K8/035 , C09K8/03 , C09K8/467 , C09K8/504 , C09K8/506 , C09K8/57 , C09K8/575 , C04B24/30 , C04B28/02 , C08G73/02 , C08G73/06 , C08L79/02 , C08L79/04 , C09K8/42 , C09K8/56 , E21B33/138
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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6.发明申请公开(公告)号：US20200270976A1
公开(公告)日：2020-08-27
申请号：US16874255
申请日：2020-05-14
发明人： Feng Liang , Jinhong Chen , Rajesh Kumar Saini , Hui Hai Liu
摘要： The present disclosure describes methods and systems for removing near wellbore damage in a hydrocarbon reservoir. One method includes position an antenna inside a wellbore in a location corresponding to a formation where near wellbore damage occurs; wherein the wellbore extends from a surface of a hydrocarbon reservoir downward into the subterranean structure of the hydrocarbon reservoir; transmitting an electromagnetic (EM) wave to the antenna; and irradiating, from the antenna, at least a portion of the EM wave at the formation, wherein the portion of the EM wave removes the near wellbore damage at the formation.
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公开(公告)号：US20200231865A1
公开(公告)日：2020-07-23
申请号：US16842291
申请日：2020-04-07
摘要： A fracturing fluid including a base fluid including salt water, a polymer, a crosslinker, and a nanomaterial. The crosslinker may include a Zr crosslinker, a Ti crosslinker, an Al crosslinker, a borate crosslinker, or a combination thereof. The nanomaterial may include ZrO2 nanoparticles, TiO2 nanoparticles, CeO2 nanoparticles; Zr nanoparticles, Ti nanoparticles, Ce nanoparticles, metal-organic polyhedra including Zr, Ti, Ce, or a combination thereof; carbon nanotubes, carbon nanorods, nano graphene, nano graphene oxide; or any combination thereof. The viscosity and viscosity lifetime of fracturing fluids with both crosslinkers and nanomaterials are greater than the sum of the effects of crosslinkers and nanomaterials taken separately. Moreover, this synergistic effect offers significant, practical advantages, including the ability to use salt water rather than fresh water for fracturing fluids, the ability to reduce polymer loading to achieve a desired viscosity, and the ability to achieve better formation cleanup after the fracturing treatment.
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8.发明申请公开(公告)号：US20200017757A1
公开(公告)日：2020-01-16
申请号：US16580816
申请日：2019-09-24
发明人： Leiming Li , Feng Liang , Tao Chen
摘要： Embodiments of the present disclosure are directed to a method of producing a viscoelastic surfactant (VES) fluid, the VES fluid comprising desulfated seawater. The method of producing the VES fluid comprises adding an alkaline earth metal halide to seawater to produce a sulfate precipitate. The method further comprises removing the sulfate precipitate to produce the desulfated water. The method further comprises adding a VES and one or more of a nanoparticle viscosity modifier or a polymeric modifier to the desulfated seawater. Other embodiments are directed to VES fluids that maintain a viscosity greater than 10 cP at temperatures above 250° F.
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公开(公告)号：US10457850B2
公开(公告)日：2019-10-29
申请号：US15670826
申请日：2017-08-07
发明人： Hejian Sun , Leiming Li , Feng Liang
摘要： A low-corrosivity composition suitable for dissolving scale on metals. The scale includes iron sulfide scale. The composition includes an aqueous hydrogen peroxide solution comprising hydrogen peroxide; and an acidic solution comprising at least one acid, where the hydrogen peroxide and acid are present at concentrations such that the hydrogen peroxide does not break down to form visible bubbles at about room temperature, where the hydrogen peroxide and acid are present at concentrations such that iron sulfide scale is removed from a metal with iron sulfide scale, after the composition contacts the metal and iron sulfide scale at an elevated temperature greater than room temperature, and where the hydrogen peroxide and acid are present at concentrations such that pitting is not caused on the metal, the metal comprising carbon steel.
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10.发明申请公开(公告)号：US20190292890A1
公开(公告)日：2019-09-26
申请号：US15926666
申请日：2018-03-20
发明人： Feng Liang , Jinhong Chen , Rajesh Kumar Saini , Hui Hai Liu
摘要： Methods and systems for removing near wellbore damage in a hydrocarbon reservoir are described. In one example implementation, an antenna is positioned inside a wellbore in a location corresponding to a formation where near wellbore damage occurs. The wellbore extends from a surface of a hydrocarbon reservoir downward into the subterranean structure of the hydrocarbon reservoir. An electromagnetic (EM) wave is transmitted to the antenna. A portion of the EM wave is irradiated at the formation. The portion of the EM wave removes the near wellbore damage at the formation.
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