479 patents
Page 5 of 24
Utility
Method for separating aromatic hydrocarbon using extractive distillation
22 Aug 23
A method for separating aromatic hydrocarbons by an extractive distillation, comprising introducing a hydrocarbon mixture containing aromatic hydrocarbons into the middle of an extractive distillation column (8); introducing an extraction solvent into the upper part of the extractive distillation column; after an extractive distillation, a raffinate containing benzene is discharged from the top of the column, wherein the benzene content is 3-40% by mass, and sent to the lower part of the extraction column (10); the extraction solvent is introduced to the upper part of the extraction column for a liquid-liquid extraction; a raffinate liquid free of aromatic hydrocarbons is discharged from the top of the extraction column; a rich solvent containing benzene is discharged from the bottom of the column and enters the upper-middle part of the extractive distillation column; the rich solvent obtained at the bottom of the extractive distillation column is sent to the solvent recovery column to separate the aromatic hydrocarbons and the solvent.
Longsheng Tian, Ming Zhao, Wencheng Tang, Siliang Gao, Nan Yang, Zhifeng Bian, Siyuan Qie
Filed: 30 Jan 19
Utility
Upflow reactor
22 Aug 23
An upflow reactor (1), includes a housing (20), a catalyst bed layer (30) and a pressing device (10).
Minghua Guan, Xiuna Yang, Zonglin Ruan, Haochen Wang, Yang Jiang, Guoying Cui, Jiawen Zhou
Filed: 30 Dec 19
Utility
Method for obtaining near-wellbore true borehole sigma and true formation sigma by using a nuclear logging tool during oil and gas exploration
22 Aug 23
A method for wireline or logging-while-drilling systems that uses pulsed neutron sources coupled to multiple dual-function radiation detectors of neutrons and gamma rays, as well as a non-transitory computer readable memory device that can distinguish using pulse shape discrimination techniques the neutrons from the gamma rays in order to measure thermal neutron time-decay signals and thermal neutron capture gamma ray time-decay signals that are later further process using the non-transitory computer readable memory device to obtain a borehole sigma and formation sigma that are not affected by near-wellbore environments.
Sheng Zhan, Jeremy Zhang
Filed: 31 Aug 21
Utility
Thermal Recovery Construction Method
17 Aug 23
A thermal recovery construction method includes the steps of determining design parameters of a current thermal recovery construction according to geological data and reservoir characteristics of a current oil deposit area to be stimulated; preparing, according to the design parameters, coal water slurry required for the current thermal recovery construction; injecting the coal water slurry into a target reservoir through an injection well with an injection mode of the design parameters, along with combustion adjuvant with an amount selected based on a total injection amount of the coal water slurry; and inducing spontaneous combustion of the coal water slurry by thermal energy generated by a downhole heating device, and performing control and displacement on the reservoir with the thermal energy and gas generated after the combustion.
Zengmin LUN, Huanquan SUN, Guangfu WANG, Bo HU, Lei TANG, Yuanliang YANG, Jianyong WANG, Chengyuan LV, Jianfang SUN, Haitao WANG, Yanbo JIANG, Tao MA
Filed: 30 Oct 20
Utility
Copolymer of Olefin and Unsaturated Carboxylic Acid or Unsaturated Carboxylic Acid Derivative
17 Aug 23
A preparation method for a copolymer includes the step(s) of contacting an olefin and an unsaturated carboxylic acid shown in Formula II or a derivative of the unsaturated carboxylic acid shown in Formula II with a catalyst and optionally a chain transfer agent for reaction in the presence of an alkane solvent to obtain the copolymer.
Rong GAO, Zifang GUO, Junling ZHOU, Dongbing LIU, Jie FU, Jingjing LAI, Tingjie HUANG, Shiyuan XU, Xinyang LI
Filed: 21 Apr 23
Utility
Catalytic Cracking Catalyst and Process for Preparing the Same
10 Aug 23
A catalytic cracking catalyst contains 10-70 wt % of a cracking active component, 10-60 wt % of a binder and 10-70 wt % of a clay.
Wei LIN, Xue YANG, Min SUN, Jihong ZHOU, Zhenbo WANG, Ningyuan SHEN
Filed: 23 Jun 21
Utility
Hydrate Decomposition Inhibiting Composition, Coupling Enhanced Solid Hydrate, and Method for Improving Solid Hydrate Storage and Transportation Stability
3 Aug 23
A hydrate decomposition inhibiting composition, a coupling enhanced solid hydrate, and a method for improving the solid hydrate storage and transportation stability relating to the technical field of natural gas safety storage and transportation are provided.
Kele YAN, Anshan XIAO, Shanjun MU, Xuyao HU, Yuemeng REN, Hongxing ZHANG, Yu LIN
Filed: 26 Jan 21
Utility
Coated Rubber Particle, Its Preparation and Application Thereof
3 Aug 23
Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids.
Gongrang LI, Wenbo LI, Bingxiang SUN, Hui TIAN, Xizhou WANG, Ke LI, Jianghong JIA, Lei YU, Jie SUN, Xudong WANG, Chengjun WANG, Bingtai LI, Haibin LI, Zhendong LIU, Kai GAO, Chunguang LI, Hui LI
Filed: 4 Feb 21
Utility
Alkylaniline Polyether Benzenesulfonate and Process of Producing Same
3 Aug 23
A process for the conversion of methanol to olefins includes the steps of passing a feedstock comprising methanol to a fluidized bed reactor in contact with a catalyst to produce an olefin product, wherein the process at least partially deactivates the catalyst to form an at least partially deactivated catalyst; and passing spent catalyst from said at least partially deactivated catalyst to a regenerator for regeneration thereby forming regenerated catalyst and returning activated catalyst from said regenerated catalyst to said reactor via a regenerated catalyst line.
Yingcheng LI, Xinning BAO, Weidong ZHANG, Ou SHA, Xinyue WU, Jun JIN
Filed: 2 Jul 21
Utility
Substituted saccharides or glycosides and use thereof in a drilling fluid composition
1 Aug 23
Zhonghua Wang, Xiqiang Si
Filed: 5 Jul 19
Utility
Hydrate Accelerator, Hydrate and Preparation Method Thereof
27 Jul 23
Kele YAN, Anshan XIAO, Shanjun MU, Xuyao HU, Yuemeng REN, Hongxing ZHANG, Yu LIN
Filed: 26 Jan 21
Utility
Wellbore Staged Operation Method and Rubber Plug for Said Method
27 Jul 23
A wellbore staged operation method, includes running, after a first well drifting operation is performed on a wellbore, a pipe string (100) in the wellbore, wherein the pipe string (100) includes, along a direction from bottom to top, a floating hoop (2), a plug seat (7), a toe-end sliding sleeve (3), and a fracturing sliding sleeve (4); performing a cementing operation, wherein cement slurry pumped into an inner chamber of the pipe string (100) enters an annulus between the pipe string and the wellbore through the plug seat (7) and the floating hoop (2) to form a cement sheath, the cement sheath isolating the toe-end sliding sleeve (3) from the fracturing sliding sleeve (4); performing a second drifting operation to ensure the toe-end sliding sleeve (3) of the pipe string (100) exposed; performing a pressure test for the pipe string; and performing staged fracturing constructions.
Wei LEI, Zhimin HOU, Haifeng DONG, Yancheng YAN, Lin LAN, Xingwen WANG, Xiaogang WANG, Zhiguo QIAO, Zhou FANG
Filed: 10 Jun 21
Utility
Sphere-like Super-macroporous Mesoporous Material and Polyolefin Catalyst Containing Same
27 Jul 23
Disclosed are a spherelike supermacroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process.
Yu KANG, Xinping LYU, Dongbing LIU, Zifang GUO, Hongmei LIU, Bingyi LI, Ruen WANG
Filed: 30 Oct 20
Utility
Flame Arrester
20 Jul 23
A flame arrester, has a housing having an inlet and an outlet, and a flame retardant core arranged within the housing.
Lei BAO, Anfeng YU, Peng WANG, Wenyi DANG, Yongzhong BAI, Chen KUANG, Xiaodong LING, Guoxin CHEN, Houda LI, Meng GU
Filed: 22 Jan 21
Utility
Computer-implemented method of using a non-transitory computer readable memory device with a pre programmed neural network and a trained neural network computer program product for obtaining a true borehole sigma and a true formation sigma
18 Jul 23
A computer-implemented method that uses a preprogrammed neural network and a trained neural network computer program product to predict and then compared borehole and formation sigmas, when using a pulse neutron source and at least three dual-function radiation detectors.
Sheng Zhan, Jeremy Zhang
Filed: 16 Sep 21
Utility
Hydrogenation Catalyst and Preparation Method Therefor and Use Thereof
6 Jul 23
A catalyst has a carrier and a hydrogenation active metal component supported on the carrier.
Yanzi JIA, Hong NIE, Qinghe YANG, Shuangqin ZENG, Dawei HU, Xinqiang ZHAO, Zhonghuo DENG, Liang REN, Xinpeng NIE
Filed: 28 Apr 21
Utility
Device and Method for Preparing Polyalphaolefin
6 Jul 23
An apparatus for preparing polyalpha-olefins includes a mixing unit, a microchannel reaction unit, a high-pressure separation unit, a low-pressure separation unit, a gas circulation unit, a post-treatment unit and a pressure control unit, the mixing unit, the microchannel reaction unit, the high-pressure separation unit, the low-pressure separation unit that are successively connected.
Shuo SU, Xin CHENG, Bing XU, Qinghua DUAN, Jiayao YAO, Zuoxin HUANG, Xiaojin TANG, Tao HUANG, Ying HAN
Filed: 20 Apr 21
Utility
Modified Y-type molecular sieve, catalytic cracking catalyst comprising the same, their preparation and application thereof
4 Jul 23
A modified Y-type molecular sieve has a rare earth content of about 4% to about 11% by weight on the basis of the oxide, a phosphorus content of about 0.05% to about 10% by weight on the basis of P2O5, a sodium content of no more than about 0.5% by weight on the basis of sodium oxide, a gallium content of about 0.1% to about 2.5% by weight on the basis of gallium oxide, and a zirconium content of about 0.1% to about 2.5% by weight on the basis of zirconia; and the modified Y-type molecular sieve has a total pore volume of about 0.36 mL/g to about 0.48 mL/g, a percentage of the pore volume of secondary pores having a pore size of 2-100 nm to the total pore volume of about 20% to about 40%.
Lingping Zhou, Qiuqiao Jiang, Shuai Yuan, Hao Sha, Mingde Xu, Zhenyu Chen, Weilin Zhang, Huiping Tian
Filed: 15 Aug 19
Utility
Low temperature plasma reaction device and hydrogen sulfide decomposition method
4 Jul 23
Described are a low temperature plasma reaction device and a hydrogen sulfide decomposition method.
Jing Zhang, Shanjun Mu, Wei Xu, Ning Shi, Shucai Zhang, Guosheng Dong, Tie Zhang, Lin Wang, Junpeng Ren, Feng Sun
Filed: 31 Jan 19
Utility
Method and Apparatus for Using Pulsed Neutron Generators and Dual-Function Detectors to Obtain Formation Mineralogy
29 Jun 23
A method for obtaining elemental concentration and determining the formation mineralogy uses a tool having multiple dual-function detectors that can detect both neutrons and gamma rays simultaneously.
Sheng ZHAN, Jeremy ZHANG, Zongqi CHEN, Xianghua LIU
Filed: 21 Feb 23