China University of Petroleum

China University of Petroleum (East China)

Qingdao Power Supply Company of Shandong Electric Power Group Corporation

Qingdao Soshitu Outdoor Equipment Co., Ltd.

Harbin Institute of Technology

Qingdao Haier Smart Technology R&d Co., Ltd.

Qingdao Haier Air Conditioner Gen Corp., Ltd.

Jian Li

Jinsheng Sun

Jingping Liu

Kaihe Lv

Jintang Wang

Yingrui Bai

Jiafeng Jin

Xianbin Huang

Meichun Li

Shenglong Shi

Bo Liao

Guancheng Jiang

Zhaomin Li

Xiaohui Sun

Qiang Wang

Rui Zhang

Binfei Li

Teng Lu

Xin Yang

Rongchao Cheng

Li Wang

Baosheng Yan

Guangfen Jia

Chao Wang

Zhongni Wu

Dawei Hou

Ze Wang

Tingting Guan

Weian Huang

Junjie Zheng

Yuan Long Liu

Ziyan Li

Mei-Chun Li

Jiaqi Xu

Tingtiing Guan

Dingyong Zhang

Hui Yang

Sheng Chuan Zhao

Gong Pu Wang

Wen Gang Wang

Yuan Zhang

Lu Dong Luo

Jingfeng Tang

Jingjing Wang

Linqiang Tang

Zhuang Ma

Yongtao Wang

Lichen Zhang

A polycarboxylate thinner for a carbonate/bicarbonate contamination resistant water-based drilling fluid is prepared from the following raw materials in part by mass: 5 to 10 parts of acrylic acid, 1 to 5 parts of N-vinylpyrrolidone, 5 to 10 parts of sodium methallyl sulfonate, 40 to 50 parts of isopentenyl polyethylene glycol ether, 0.02 to 0.6 part of oxidizing agent, 45 to 55 parts of reducing agent, and 40 to 60 parts of water. The thinner can solve problems caused by HCOand COcontamination in a drilling fluid, such as fluid thickening, increased viscosity and shear force, and elevated fluid loss. When applied to the drilling fluid contaminated with HCOand CO, the thinner can effectively reduce viscosity, shear force, and fluid loss of the drilling fluid.

Polycarboxylate thinner for carbonate/bicarbonate contamination resistant water-based drilling fluid and preparation method and application thereof

Folding table

A phase change microcapsule for drilling fluid cooling and its preparation method and application, belonging to the field of oilfield chemistry technology; the preparation method of the phase change microcapsule of the invention includes the steps as follows: the core materials of NaNOand KNOare dried, heated, melted, cooled and ground to obtain a phase change material mixture; added emulsifier into the linseed oil, then heated and stirred to obtain the oil phase; the phase change material mixture were added into the suspension of cellulose nanofibers (CNFs), then stirred followed by adding ammonium hydroxide to obtain the water phase; mixed the water phase with the oil phase, heated and stirred to form water-in-oil (W/O) emulsion; then added shell prepolymer material (tetraethyl silicate) into the emulsion, after centrifugation, washing and drying, the phase change microcapsule for cooling drilling fluid was obtained.

Phase change microcapsule for drilling fluid cooling and its preparation method and application

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.

High-temperature and high-salt resistant hyperbranched lubricant for water-based drilling fluid, and preparation and application thereof

Disclosed is a bio-enzyme degradable temporary plugging material and a preparation method and application thereof in the technical field of natural gas hydrate drilling and production; the preparation method of the bio-enzyme degradable temporary plugging material includes the following steps: mixing the ceramsite with an aqueous solution of 3-aminopropyl trimethoxysilane before a stirring reaction and drying to obtain modified ceramsite; and fully dispersing the modified ceramsite, ethyl cellulose, and epoxy resin in dichloromethane to obtain an oil phase; adding the oil phase into a gelatin aqueous solution and mixing uniformly; after a stirring reaction, evaporating an organic solvent, filtering, washing, and drying, to obtain the bio-enzyme degradable temporary plugging material.

Bio-enzyme degradable temporary plugging material and preparation method and application thereof

An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.

Oil-soluble thermosensitive resin lost circulation material for protecting a reservoir as well as preparation method and application thereof

A high temperature and high salinity-resistant complementarily rigid-flexible plugging agent, a method for preparing the same, and a water-based drilling fluid and a use thereof.

High temperature and high salinity-resistant complementarily rigid-flexible plugging agent and method for preparing the same and water-based drilling fluid and use thereof

The present disclosure to a cementitious plugging wall solidifier for water-based drilling fluid and a preparation method thereof and a water-based drilling fluid.

Cementitious plugging wall solidifer for water-based drilling fluid, and a preparation method thereof and a water-based drilling fluid

A composite nitrogen huff and puff method for a bounded fault block reservoir comprises: selecting the reservoir to be developed, wherein the reservoir to which the development method is applicable is roughly screened according to the following conditions: the reservoir is a bounded fault block reservoir, buried depth&#x3c;5000 m, residual oil saturation&#x3e;0.5, reservoir thickness&#x3e;10 m, horizontal permeability&#x3e;100 mD, vertical permeability to horizontal permeability ratio&#x3e;0.35, reservoir porosity&#x3e;0.20, and stratigraphic dip&#x3e;8&#xb0;; and sequentially performing the following huff and puff phases: a nitrogen huff and puff phase, a nitrogen and water composite huff and puff phase, a nitrogen and foaming agent composite huff and puff phase, and a nitrogen and carbon dioxide composite huff and puff phase.

Composite nitrogen huff and puff method for bounded fault block reservoir

A modeling system and modeling method based on a logical relation, including an operation task integrating module, a task interpreter, a graph layout correcting module, a graph wiring correcting module and a database model increment correcting module, wherein the database model increment correcting module includes a graph increment calculating unit and a model increment calculating unit. The system, through description of the logical relation and based on support of the automatic wiring technology, realizes the graph-model integrated generation of a new grid model of the power system which is based on the description of the logical relation; the grid model is completely defined and modified on 'one net', which is different from the original way that the power system model is established on countless net graphs, thereby helping the grid operation manager to accurately and rapidly establish and modify the grid model of the full system.

Modeling system and modeling method based on logical relation

Growing community of inventors

Qingdao, China

Jian Li