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公开(公告)号：US20240199944A1
公开(公告)日：2024-06-20
申请号：US18074149
申请日：2022-12-02
Inventor： Genyao Lin , Jiangshui Huang , Fuchen Liu , Jianshen Li , Lijun Lin
IPC: C09K8/60 , C08F220/56 , C09K8/68 , C09K8/80
CPC classification number: C09K8/604 , C08F220/56 , C09K8/68 , C09K8/80 , C08F2800/20
Abstract: A water-soluble polymer system for suspending proppant in a fracturing fluid is disclosed herein. The polymer system can be made with acrylamide, acrylic acid, a surfactant monomer, urea, a glycol ether, sodium hydroxide, and water and when mixed in a fracturing fluid with a proppant can form three-dimensional structures by hydrophobic association. The structures can suspend a proppant for a period of days in comparison with traditional fracturing fluid systems with similar concentrations.
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2.发明公开
公开(公告)号：US20240085300A1
公开(公告)日：2024-03-14
申请号：US17941633
申请日：2022-09-09
Inventor： Jiangshui Huang , Lijun Lin , Genyao Lin , Fuchen Liu , Jianshen Li
CPC classification number: G01N15/04 , C09K8/68 , C09K8/80 , G06T7/60 , G06T7/90 , C09K2208/28 , G06T2207/10024 , G06T2207/20132
Abstract: A method to determine the velocity of static proppant settling in fracturing fluids. The proppant carrying capability of different friction reducer products can be compared, so the appropriate friction reducer product can be selected for hydraulic fracturing operations. The effect of friction reducer concentrations in the fracturing fluids, the salinity and hardness of the fracturing fluids, and the proppant size on the velocity of static proppant settling can be studied to optimize the chemical structures of the friction reducers in the process of synthesis and optimize the hydraulic fracturing operation, e.g. to determine the proper concentration of friction reducers according to the salinity and proppant size.
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3.发明公开
公开(公告)号：US20230193119A1
公开(公告)日：2023-06-22
申请号：US18109082
申请日：2023-02-13
Inventor： Lijun Lin , Jiangshui Huang , Litao Bai , Stephanie Yu , Fuchen Liu , Congbin Yin , Wei Gong
IPC: C09K8/80 , E21B43/267 , C09K8/66 , C09K8/68
CPC classification number: C09K8/80 , E21B43/267 , C09K8/665 , C09K8/68
Abstract: A hydraulic fracture fluid is provided. The fluid can include a liquid solvent, one or more surfactants, a proppant-forming compound, and one or more curing agents. The liquid reacts to form proppant in-situ under downhole conditions.
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公开(公告)号：US11649395B2
公开(公告)日：2023-05-16
申请号：US16903777
申请日：2020-06-17
Applicant: CNPC USA CORPORATION , Beijing Huamei, Inc.
Inventor： Nancy Chun Zhou , Fuchen Liu
Abstract: Some reservoirs have tight oil formations, such as the Changqing reservoir. The surfactant polymer flooding and low tension gas flooding are two potential chemical flooding methods for use in tight oil formations. In these methods, an oil displacement agent, or surfactant, is added. Nonionic surfactants with extended chains (by propylene oxide and ethylene oxide) from dialkyl alcohols or dialkyl amines were tested. A synergistic blend of surfactants was developed between the nonionic surfactants and anionic surfactants that lowers interfacial tension and improves surfactant solubility in water and oil.
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公开(公告)号：US10752829B2
公开(公告)日：2020-08-25
申请号：US16171156
申请日：2018-10-25
Applicant: CNPC USA CORPORATION
Inventor： Lijun Lin , Jiangshui Huang , Litao Bai , Stephanie Yu , Fuchen Liu , Congbin Yin , Wei Gong
IPC: E21B43/267 , C09K8/80 , C09K8/66 , C09K8/68
Abstract: A hydraulic fracture fluid is provided. The fluid can include a liquid solvent, one or more surfactants, a proppant-forming compound, and one or more curing agents. The liquid reacts to form proppant in-situ under downhole conditions.
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公开(公告)号：US20240043741A1
公开(公告)日：2024-02-08
申请号：US18485934
申请日：2023-10-12
Inventor： Fuchen Liu , Jianshen Li , Lijun Lin , Jiangshui Huang , Genyao Lin , Lulu Song , Stephanie Yu
CPC classification number: C09K8/68 , E21B43/26 , C09K2208/28
Abstract: A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
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公开(公告)号：US20240043740A1
公开(公告)日：2024-02-08
申请号：US18485860
申请日：2023-10-12
Inventor： Fuchen Liu , Jianshen Li , Lijun Lin , Jiangshui Huang , Genyao Lin , Lulu Song , Stephanie Yu
CPC classification number: C09K8/68 , E21B43/26 , C09K2208/28
Abstract: A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
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公开(公告)号：US20230265335A1
公开(公告)日：2023-08-24
申请号：US18129662
申请日：2023-03-31
Inventor： Meng Lu , Danhua Zhang , Fuchen Liu , Nancy Zhou , Jianshen Li , Weibin Zha
Abstract: This disclosure describes the composition and methods of use for a novel delayed polymer gelation system for high temperature and high salinity applications. This polymer gelation system includes a polymer of acrylamide, AMPS and 500-5000 ppm polyethylene glycol diacrylate in inverse emulsion form, and a polyethyleneimine (PEI) with a MW of 2,000-30,000 daltons as the crosslinking agent.
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公开(公告)号：US11499091B2
公开(公告)日：2022-11-15
申请号：US16948368
申请日：2020-09-15
Applicant: CNPC USA CORPORATION , BEIJING HUAMEI INC.
Inventor： Jiangshui Huang , Nancy Zhou , Lijun Lin , Fuchen Liu , Guodong Wu , Bo Huang
Abstract: A novel surfactant composition that comprises of two surfactant components, a solvent, and water. The surfactant composition is added to a fracturing fluid, which is then pumped downhole into a subterranean formation where the novel characteristics of the fracturing fluid lend to improved oil production over the fracturing fluid without the surfactant composition.
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公开(公告)号：US20200369952A1
公开(公告)日：2020-11-26
申请号：US16933955
申请日：2020-07-20
Applicant: CNPC USA CORPORATION
Inventor： Lijun Lin , Jiangshui Huang , Litao Bai , Stephanie Yu , Fuchen Liu , Congbin Yin , Wei Gong
IPC: C09K8/80 , E21B43/267 , C09K8/66 , C09K8/68
Abstract: A hydraulic fracture fluid is provided. The fluid can include a liquid solvent, one or more surfactants, a proppant-forming compound, and one or more curing agents. The liquid reacts to form proppant in-situ under downhole conditions.
