公开(公告)号：US20160053156A1

公开(公告)日：2016-02-25

申请号：US14862795

申请日：2015-09-23

Applicant: China University of Petroleum (Beijing)

Inventor： Guancheng JIANG ,  Yang XUAN ,  Xianzhu WU ,  Junbin CHEN ,  Wei OUYANG ,  Taotao LUO

IPC: C09K8/035

CPC classification number: C09K8/035 ,  C08B37/003 ,  C08F8/32 ,  C08F251/00 ,  C08L5/08 ,  C08L51/02 ,  C08F220/06

Abstract: The present invention provides a biomimetic polymer for stabilizing wellbore, a method for preparation of the biomimetic polymer, and a drilling fluid. The polymer contains carboxymethyl chitosan that serves as a backbone and dopamine-derived groups grafted on the backbone. The polymer provided in the present invention can improve the strength of shale in the wellbore, seal the shale pores and reduce the filter loss of drilling fluid, and thereby attains an effect of stabilizing the wellbore in shale formation in drilling process.

公开(公告)号：US09267068B1

公开(公告)日：2016-02-23

申请号：US14860411

申请日：2015-09-21

Applicant: China University of Petroleum (Beijing)

Inventor： Guancheng Jiang ,  Yang Xuan ,  Xi Wang ,  Shuo Zhang ,  Yuxiu An ,  Jinsheng Sun

IPC: C09K8/12 ,  C09K8/03 ,  E21B3/00

CPC classification number: C09K8/03 ,  C09K8/032 ,  E21B3/00

Abstract: The present subject matter relates to a protecting agent composition for high/ultra-high permeability reservoirs, consisting of a protecting agent and a filler, wherein, the filler comprises calcium carbonate of 600-1,000 mesh, calcium carbonate of 300-590 mesh, and calcium carbonate of 50-200 mesh at 1:(1-30):(0-40) weight ratio, and the protecting agent comprises structural units denoted by the following formulae (1), (2), and (3). The present subject matter further provides a drilling fluid containing the above-mentioned composition. The present subject matter further provides a use of the drilling fluid for drilling in high/ultra-high permeability reservoirs. The drilling fluid provided in the present subject matter has advantages including easy use, high environmental friendliness, and outstanding reservoir protection, greatly reduces the damages of drilling fluid to high/ultra-high permeability reservoirs, and brings substantial economic benefits.

Abstract translation: 本发明涉及一种由保护剂和填料组成的高/超高渗透性储层的保护剂组合物，其中填料包括600-1,000目的碳酸钙，300-590目的碳酸钙，和 1〜（1-30）：（0-40）重量比为50-200目的碳酸钙，保护剂为由下式（1），（2）和（3）表示的结构单元。 本发明还提供了含有上述组合物的钻井液。 本主题进一步提供了用于在高/超高渗透性储层中钻井的钻井液的用途。 本项目提供的钻井液具有使用方便，环保性好，油藏保护性好等优点，大大降低了钻井液对高/超高渗油藏的破坏，带来了巨大的经济效益。

公开(公告)号：US09115541B2

公开(公告)日：2015-08-25

申请号：US13683426

申请日：2012-11-21

Applicant: College of Petroleum Engineering, China University of Petroleum—Beijing (CUPB)

Inventor： Gensheng Li ,  Jilei Niu ,  Zhongwei Huang ,  Huaizhong Shi ,  Shouceng Tian ,  Jiasheng Fu

IPC: E21B7/18 ,  E21B4/00 ,  E21B7/24

CPC classification number: E21B7/18 ,  E21B4/006 ,  E21B7/24

Abstract: An impulse-type underground supercharged jet drilling method and device. The impulse-type underground supercharged jet drilling method uses up and down vibrations of a drill string or weight on bit variation during the drilling process, so that an upper joint connected to the drill string drives a housing and a supercharging cylinder block to move up and down relative to a supercharging piston, while the supercharging piston, a high pressure line, and a drive shaft disposed outside the high pressure line make a reciprocally retractable movement relative to the housing. As a result, some working fluid entering the supercharging cylinder block is intermittently supercharged, and discharged from a high pressure fluid passage disposed in the supercharging piston and the high pressure line. The device effectively imparts an underground supercharging to parts of the drilling fluid, thus improving the rock breaking efficiency and the drilling speed.

Abstract translation: 一种脉冲型地下增压喷射钻井方法及装置。 脉冲型地下增压喷射钻孔方法在钻孔过程中使用钻柱的上下振动或钻头变形的重量，使得连接到钻柱的上接头驱动壳体和增压气缸体向上移动， 而增压活塞，高压管线和设置在高压管线外侧的驱动轴相对于壳体相互往复伸缩。 结果，进入增压缸体的一些工作流体被间歇地增压，并且从设置在增压活塞和高压管路中的高压流体通道排出。 该装置有效地对钻井液的一部分施加地下增压，从而提高了岩石破碎效率和钻井速度。

公开(公告)号：US20150165360A1

公开(公告)日：2015-06-18

申请号：US14397788

申请日：2013-01-18

Applicant: China University of Petroleum-Beijing (CUPB)

Inventor： Zhongli Ji ,  Xiaolin Wu ,  Honghai Chen ,  Liang Yang ,  Zhiyi Xiong

IPC: B01D46/00 ,  B05B1/34 ,  B05B1/00

CPC classification number: B01D46/0068 ,  B01D46/0002 ,  B01D46/0019 ,  B01D46/002 ,  B01D46/2407 ,  B05B1/005 ,  B05B1/083 ,  B05B1/265 ,  B05B1/34

Abstract: The present invention relates to a pulse-jet cleaning device for filter with a self-oscillating nozzle, in which a tube sheet of the filter is provided with a filtration unit thereon, with a cleaning gas chamber above the tube sheet and a dust-containing gas chamber under the tube sheet; and the pulse jet cleaning device includes an ejector and a back-flushing pipeline, with one end of the back-flushing pipeline connected to a back-flushing gas tank through a pulse back-flushing valve, the other end of the back-flushing pipeline being provided with a self-oscillating nozzle corresponding to the top portion of the ejector; and the self-oscillating nozzle includes a hollow cylindrical self oscillating chamber, which has a gas inlet at an upper end connected to the back-flushing pipeline and a gas outlet at a lower end.

Abstract translation: 本发明涉及一种具有自动旋转喷嘴的过滤器的脉冲喷射清洁装置，其中过滤器的管板在其上设置有过滤单元，在管板上方具有清洁气体室，并且含有灰尘的 管板下的气室; 并且脉冲喷射清洗装置包括喷射器和反冲洗管道，反冲洗管道的一端通过脉冲反冲洗阀连接到反冲洗气罐，反冲洗管道的另一端 设置有对应于喷射器的顶部的自动旋转喷嘴; 并且自振荡喷嘴包括中空圆柱形自振荡室，其具有连接到后冲洗管道的上端的气体入口和下端的气体出口。

公开(公告)号：US20150090637A1

公开(公告)日：2015-04-02

申请号：US14296387

申请日：2014-06-04

Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING ,  CHINA NATIONAL PETROLEUM CORPORATION

Inventor： GANG WANG ,  JINSEN GAO ,  CHUNMING XU ,  BAOJIAN SHEN ,  HONGLIANG WANG

IPC: C10G11/18

CPC classification number: C10G11/18 ,  C10G11/02 ,  C10G11/04 ,  C10G2300/107 ,  C10G2300/1077 ,  C10G2400/02 ,  C10G2400/04 ,  C10G2400/30

Abstract: The present invention provides a method for processing low-grade heavy oil, comprising: providing a riser-bed reactor; preheating the low-grade heavy oil and injecting it into the riser reactor to react with solid catalyst particles at the temperature of 550-610° C.; oil-gas, after reacting with the solid catalyst particles in the riser reactor, being introduced into the fluidized bed reactor to continue to react at temperature of 440-520° C. and weight hourly space velocity of 0.5-5 h−1; and the oil-gas, after reacting in the fluidized bed reactor, being separated from coked solid catalyst particles carried therein, and the separated oil-gas being introduced into a fractionation system. The method can effectively remove carbon residues, heavy metals, asphaltenes and other impurities from the low-grade heavy oil, and obtain high liquid product yield in a simple process.

Abstract translation: 本发明提供了一种低级重油的加工方法，其特征在于，提供一种提升塔式反应器; 预热低级重油并将其注入提升管反应器中以在550-610℃的温度下与固体催化剂颗粒反应; 在与提升管反应器中的固体催化剂颗粒反应之后，将油 - 气引入流化床反应器中以在440-520℃的温度和0.5-5h -1的重时空速下继续反应; 并且在流化床反应器中反应后的油气从其中携带的焦化固体催化剂颗粒分离，并将分离的油气引入分馏系统中。 该方法可以有效去除低品位重油中的碳残留物，重金属，沥青质等杂质，并以简单的方法获得较高的液体产品产量。

公开(公告)号：US12270757B1

公开(公告)日：2025-04-08

申请号：US18942721

申请日：2024-11-10

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Bei Wei ,  Yongsheng Liu ,  Jian Hou ,  Jiahe Sun ,  Kang Zhou ,  Yu Xue ,  Ningyu Zheng ,  Qingjun Du ,  Xuwen Qin ,  Yongge Liu

IPC: G01N21/33

Abstract: Disclosed is a method for determining the dynamic adsorption retention of polymer capsules, belonging to the technical field of oil and gas field development engineering, which includes: (1) carrying out a thermal aging experiment to establish relational expressions between a capsule concentration and an aging time, as well as a polymer release concentration and the aging time; (2) setting up a polymer capsule displacement experimental device to determine the release concentration of polymers in effluent; (3) releasing polymers encapsulated by capsules in the effluent to acquire a total adsorption retention of polymers in a porous medium; and (4) inverting respective adsorption retentions of the capsule particles and the polymers in the porous medium.

公开(公告)号：US12270008B2

公开(公告)日：2025-04-08

申请号：US18036192

申请日：2022-01-10

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Bin Liu ,  Yongming Chai ,  Chenguang Liu ,  Yuan Pan ,  Yichuan Li ,  Kongyuan Zhang ,  Yunqi Liu

IPC: C10M175/00 ,  B01J31/02 ,  B01J37/04 ,  B01J37/20 ,  C10G67/14 ,  C10N60/02

Abstract: A method for hydrotreating and recycling waste lubricating oil, the method comprising the two steps of slurry bed pre-hydrotreatment and deep hydrotreatment, specifically as follows: mechanical impurities are removed from waste lubricating oil, and then the oil is subjected to flash distillation to separate free water and a portion of light hydrocarbons; a bottom product of the flash distillation column is mixed with hydrogen and a self-sulfurizing oil-soluble transition metal catalyst, and then enters a slurry bed reactor for pre-hydrotreatment; a liquid product obtained by performing separation on a reaction effluent is subjected to hydrocyclone separation and solvent washing to remove solid residue, and then a pre-treated lubricating oil component is obtained; said component is mixed with hydrogen and then enters a hydrofining reactor, an isomerization-dewaxing reactor, and a supplementary refining reactor, connected in series, for hydrotreatment; and the reaction products are separated to obtain high-quality naphtha, diesel oil and a lubricating base oil. The method of the present invention has such advantages as simple processing procedures, a high oil liquid yield, good lubricating oil base oil quality, and can implement full-fraction resource utilization of waste lubricating oil. In addition, the oil-soluble catalyst features simple dispersion, no need for vulcanization, a small catalyst adding amount, high low-temperature hydrogenation activity, is capable of effectively preventing the coking that could occur during a process of preheating the waste lubricating oil, and ensures long-term stable operation of the device.

公开(公告)号：US12264279B1

公开(公告)日：2025-04-01

申请号：US18914368

申请日：2024-10-14

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Jian Li ,  Jinsheng Sun ,  Kaihe Lv ,  Jingping Liu ,  Meichun Li ,  Yingrui Bai ,  Xianbin Huang ,  Jintang Wang ,  Jiafeng Jin ,  Bo Liao

IPC: C09K8/12 ,  C08F283/12 ,  C10M107/50 ,  C10M173/02 ,  C10N20/00

Abstract: A high-temperature and high-salt resistant hyperbranched lubricant for a water-based drilling fluid, and preparation and application thereof are provided, belonging to the technical field of oilfield chemistry. The preparation method includes the steps of: mixing tetraethyl orthosilicate (TEOS), diethanolamine (DEA), and triethanolamine (TEA) for a transesterification and polycondensation reaction to obtain highly reactive hyperbranched polysiloxane; adding an acrylamide (AM) monomer, an anionic monomer, and a polar ester monomer into deionized water to obtain a monomer solution; adjusting the pH of the monomer solution to 5-9, and then adding highly reactive hyperbranched polysiloxane; introducing nitrogen to remove oxygen, adding an initiator, and thermally initiating a polymerization reaction; and after the reaction is completed, vacuum-drying and crushing an obtained product to obtain the high-temperature and high-salt resistant hyperbranched lubricant for a water-based drilling fluid.

公开(公告)号：US20250092479A1

公开(公告)日：2025-03-20

申请号：US18556829

申请日：2022-03-29

Applicant: China University of Petroleum-Beijing ,  Beijing Carbon Zero Hydrogen Electric Technology Co., Ltd.

Inventor： Hongjun ZHOU ,  Quangui WU ,  Enze ZHOU ,  Xianbo XING

IPC: C21B13/00 ,  C01B3/38 ,  C10G9/36

Abstract: The present invention provides a method for producing sponge iron comprising the steps of: subjecting a cracking feedstock containing low-carbon alkanes to a steam cracking reaction in which the energy is provided by electricity; separating the products of steam cracking reaction to give a mixed gas containing hydrogen, methane and ethane, as well as ethylene, propylene and/or 1,3-butadiene; and mixing the mixed gas with water and/or CO2 to produce a syngas for producing sponge iron by a catalytic conversion reaction in which the energy is provided by electricity. The present invention utilizes electricity to provide energy for the steam cracking reaction and the catalytic conversion reaction through an electromagnetic coil, which is a new use of electricity and solve the current problem of excess electricity. Moreover, utilizing the electromagnetic coil to provide power can make the heat distribution in the reaction tube more uniform, and allow easier control of the reaction temperature and the progress of the reaction.

公开(公告)号：US20250085447A1

公开(公告)日：2025-03-13

申请号：US18883365

申请日：2024-09-12

Applicant: China University of Petroleum-Beijing

Inventor： Sanyi Yuan ,  Jianxiang Feng ,  Chao Wu ,  Haojie Liu ,  Wenju Sun ,  Shangxu Wang

IPC: G01V1/40

Abstract: The present disclosure provides a method and apparatus for predicting while drilling using seismic and drilling data in a target stratum, the method includes: generating depth-domain geological stratification data based on two-dimensional drilling data and one-dimensional logging data to construct a time-depth pairs dictionary; determining a first contribution degree corresponding to GST characteristic attribute data, a second contribution degree corresponding to amplitude energy attribute data and a third contribution degree corresponding to attenuation attribute data, and constructing initial seismic drilling data characterized by a multivariate and multi-type composite attribute; obtaining real-time two-dimensional data while drilling, obtaining an updated first contribution degree, an updated second contribution degree and an updated third contribution degree, and obtaining seismic and drilling prediction data of the target stratum characterized by the multivariate and multi-type composite attribute.