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Simulation of Gas-Water Two-Phase Flow in Tight Gas Reservoirs Considering the Gas Slip Effect

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Fluid Dynamics & Materials Processing 2023年第5期19卷 1269-1281页

作者： Mingjing Lu zenglin wang Aishan Li Liaoyuan Zhang Bintao Zheng Zilin Zhang Petroleum Engineering Technology Research Institute of Shengli Oilfield SinopecDongying257067China Postdoctoral Scientific Research Working Station of Shengli Oilfield SinopecDongying257067China Shengli Oilfield SinopecDongying257067China

A mathematical model for the gas-water two-phase flow in tight gas reservoirs is *** model can account for the gas slip effect,stress sensitivity,and high-speed non-Darcy *** related equations are solved in the framework of a finite element *** results are validated against those obtained by using the commercial software CMG(Computer Modeling Group software for advanced recovery process simulation).It is shown that the proposed method is *** can capture the fracture rejection characteristics of tight gas reservoirs better than the CMG.A sensitivity analysis of various control factors(initial water saturation,reservoir parameters,and fracturing parameters)affecting the production in tight gas wells is conducted ***,a series of theoretical arguments are provided for a rational and effective development/exploitation of tight sandstone gas reservoirs.

关键词： Tight gas reservoir gas-water two-phase flow numerical simulation fractured horizontal well gas slip effect

Comparison of Bottom-up Filling in Electroless Plating with an Addition of PEG, PPG and EPE

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Chinese Journal of Chemistry 2011年第3期29卷 422-426页

作者： Yang, Zhifeng wang, Zhixiang wang, Xu wang, zenglin Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Materials Science Shaanxi Normal University Xi'an Shaanxi 710062 China

The bottom-up filling capabilities of electroless copper plating bath with an addition of additives, such as poly- ethylene glycol （PEG）, polypropylene glycol （PPG） and triblock copolymers of PEG and PPG with ethylene oxide terminal blocks termed EPE, were investigated by the cross-sectional scanning electron microscopy （SEM） obser- vation of sub-micrometer trenches. Though three additives had inhibition for electroless copper deposition, the suppression degrees of three additives were different. EPE-2000 had the strongest suppression for electroless copper deposition, and the suppression of PEG-2000 was the weakest. The bottom-up filling capability of electroless copper was investigated in a plating bath containing different additives with the concentration of 2.0 mg/L. The cross-sectional SEM observation indicated the trenches with the width of 280 nm and the depth of 475 nm were all completely filled by the plating bath with an addition of EPE-2000, but the trenches were not completely filled by the plating bath with an addition of PEG-2000 or PPG-2000, and some voids appeared. Linear sweep voltammetry measurement indicated that three additives all inhibited the cathodic reduction reaction and the anodic oxidation reaction, and the inhibition of EPE-2000 was the strongest among three additives, which agreed with that of the deposition rate of electroless copper. Significant differences in surface roughness of deposited copper film were observed by UV-visible near-infrared for different suppressors, and the bright and smooth of deposited copper film were in accordance with the inhibition of three additives.

关键词： bottom-up fill electroless plating damascene copper additives triblock copolymer

Study on Reducing Injection Pressure of Low Permeability Reservoirs Characterized by High Temperature and High Salinity

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China Petroleum Processing & Petrochemical Technology 2021年第2期23卷 44-54页

作者： Zhao Lin Qin Bing Wu Xiongjun wang zenglin Jiang Jianlin SINOPEC Research Institute of Petroleum Processing Beijing 100083 SINOPEC Research Institute of Petroleum Engineering Beijing 102206 SINOPEC Shengli Oilfield Dongying 257001

In view of the problems of high injection pressure and low water injection rate in water injection wells of low permeability reservoirs featuring high temperature and high salinity,two new surfactants were synthesized,including a quaternary ammonium surfactant and a betaine amphoteric *** composite surfactant system BYJ-1 was formed by mixing two kinds of *** minimum interfacial tension between BYJ-1 solution and the crude oil could reach 1.4×10^(-3) mN/*** temperature resistance was up to 140℃,and the salt resistance could reach up to 120 g/*** the low permeability core fully saturated with water phase,BYJ-1 could obviously reduce the starting pressure gradient of low permeability *** for the core with residual oil,BYJ-1 could obviously reduce the injection pressure and improve the oil ***,the field test showed that BYJ-1 could effectively reduce the injection pressure of the water injection well,increase the injection volume,and increase the liquid production and oil production of the corresponding production well.

关键词： low permeability reservoir quaternary ammonium salt betaine surfactant interfacial tension reducing injection pressure enhancing oil recovery

Wellbore temperature distribution during drilling of natural gas hydrate formation in South China sea

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Petroleum 2021年第4期7卷 451-459页

作者： Xiaolong Zhao Yizhong Zhao zenglin wang Gang Chen Peng Li Wei Liang Xuefeng Gao Hanming Xu Lin Jiang Na Wei Research Institute of Petroleum Engineering Shengli OilfieldSINOPECDongying257000China Shengli Oilfield Company SINOPECDongying257000China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China State Key Laboratory of Natural Gas Hydrate Beijing10027China

The natural gas hydrate resources in the South China Sea alone are about 85 trillion cubic *** the drilling process of marine gas hydrate,the natural gas hydrate will decompose and produce gas,as the rising of temperature and dropping of the pressure in the *** process will have a significant impact on drilling ***,it is necessary to study the wellbore temperature distribution during the drilling of marine hydrate *** this paper,the wellbore temperature distribution of safe drilling in hydrated formation is taken as the research goal,and the research status of relevant domestic and international wellbore temperatures was *** to the characteristics of the marine environment and reservoir-forming characteristics of hydrate reservoirs in the South China Sea,the wellbore temperature distribution model of offshore drilling wellbore under the condition of hydrate decomposition was *** temperature distribution curve of drilling straight wellbore in hydrate layer of South China Sea was *** drilling the hydrate reservoir,the distribution regularity of the wellbore temperature is similar to that of the conventional offshore drilling ***,the temperature of the wellbore annulus near the hydrate decomposition site is lower than the ambient temperature,mainly due to the hydrate decomposition *** this paper,the sensitivity analysis of several main parameters of the wellbore temperature distribution of drilling straight wellbore in hydrate layer of South China Sea was carried *** the conduction of experiment and numerical simulation,we have get some new findings:(1)The hydrate saturation has little effect on the wellbore temperature;(2)As the drilling fluid displacement increases,the annulus temperature of the wellbore above the mudline increases,and the temperature of the wellbore below the mudline decreases continuously;(3)As the density of the drilling fluid increases,th

关键词： Wellbore temperature Natural gas hydrate South China Sea Numerical simulation Sensitivity analysis

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基于人脸表情与脑电信号的情绪识别系统

国外电子测量技术 2023年第10期42卷 190-195页

作者：韩凌李栋王增霖张佳赵歆卓沈阳工业大学电气工程学院沈阳110870

情绪识别系统旨在提供一种人与机器之间沟通情感的通道,为提高情绪识别准确率,开发了一款基于面部和脑电两个模态决策融合的情绪识别系统,实现4分类情绪识别。针对面部模态使用OpenCV对面部图像进行人脸定位、截取、直方图均衡化等预处... 详细信息

情绪识别系统旨在提供一种人与机器之间沟通情感的通道,为提高情绪识别准确率,开发了一款基于面部和脑电两个模态决策融合的情绪识别系统,实现4分类情绪识别。针对面部模态使用OpenCV对面部图像进行人脸定位、截取、直方图均衡化等预处理,在Keras平台构建VGG16、DenseNet121和本文设计的卷积神经网络(CNN)模型。针对脑电模态使用FP1通道进行快速傅里叶变换后分为5个频段,再使用傅里叶反变换为时域信号,使用标准差特征提取,最后使用K近邻算法实现情绪识别。决策融合方面提出一种基于加权平均的决策融合算法。系统方面基于树莓派平台开发,搭载TGAM芯片、蓝牙、摄像头和触控屏。使用Fer2013表情数据集对面部模态分类算法测试最高准确率86%。使用DEAP情感脑电数据集验证脑电模态算法取得最高准确率77%。最后设计实验验证多模态融合系统最高取得准确率为96%。

关键词：情绪识别人机交互脑电信号面部表情多模态融合深度学习

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中国老年人口分布的集疏格局及其形成机制

地理学报 2017年第10期72卷 1762-1775页

作者：赵东霞韩增林王利辽宁师范大学海洋经济与可持续发展研究中心大连116029 辽宁师范大学管理学院大连116029 辽宁师范大学城市与环境学院大连116029

中国已全面进入快速老龄化社会,研究老龄人口空间集疏格局及形成机制,不仅是开展老龄人口空间研究的理论基础,也是指导面向老龄化社会城市更新问题的关键所在。选取地级以上行政单元为研究对象,基于五普、六普老年人口数据,采用老龄化... 详细信息

中国已全面进入快速老龄化社会,研究老龄人口空间集疏格局及形成机制,不仅是开展老龄人口空间研究的理论基础,也是指导面向老龄化社会城市更新问题的关键所在。选取地级以上行政单元为研究对象,基于五普、六普老年人口数据,采用老龄化率、集聚度和空间自相关等方法,定量分析2000年和2010年全国城市老年人口分布的集疏格局及空间关联。研究表明:全国地级以上城市总体处于老龄化中期水平,城市间老龄化空间分异较大,老年人口密集区城市主要分布在胡焕庸线以东,稀疏区城市则均位于胡焕庸线以西,这与总人口分布状况基本一致;高密区城市基本都分布在东部沿海地区,中密区主要分布在长三角、珠三角、中原、山东半岛、成渝和京津冀地区,为中国分布范围最广的老年人口集聚区;城市间人口老龄化存在较强的空间正相关特征,空间集聚状况有所增强,人口老龄化空间格局表现出以热点区为中心,逐渐向外围过渡的"中心—外围"结构;自然环境、经济环境、城市化建设、人口环境等是导致老年人口集疏格局的关键形成因素。

关键词：老年人口分布集疏格局形成机制地级城市中国

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胜利油田分层注水工艺技术研究与实践

油气地质与采收率 2018年第6期25卷 1-6页

作者：王增林中国石化胜利油田分公司山东东营257000

胜利油田经过50多年开发,水驱油藏已进入特高含水期,综合含水率为92.6%,采出程度为26.2%,特高含水、高采出程度条件下提高开发质量对注水技术提出了更高的要求。提高注水"三率"是改善水驱开发质量的关键。针对胜利油田水驱油藏提高注水... 详细信息

胜利油田经过50多年开发,水驱油藏已进入特高含水期,综合含水率为92.6%,采出程度为26.2%,特高含水、高采出程度条件下提高开发质量对注水技术提出了更高的要求。提高注水"三率"是改善水驱开发质量的关键。针对胜利油田水驱油藏提高注水"三率"的制约因素及前期分层注水工艺技术应用和效果分析,结合胜利油田不同油藏、不同井状和不同工况等注水开发特征对分层注水提出的需求,开展了提高分注率、层段合格率的关键技术研究,实现不同油藏、不同井况标准化管柱的集成化配套。对现场优选"三率"具有提升潜力的水驱开发区块进行规模化推广应用,在工程上提高了整装油藏、断块油藏、低渗透油藏的"三率"指标,在油藏上进一步提升了注采对应率,降低了自然递减率,改善了水驱开发效果。

关键词：分层注水注水“三率”技术改进标准化规模应用

致密储层束缚水膜厚度计算方法及影响因素研究进展

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特种油气藏 2023年第4期30卷 1-9页

作者：刘志楠张贵才王增林葛际江杜勇中国石油大学(华东) 山东青岛266580 中国石化胜利油田分公司山东东营710018

针对致密储层束缚水膜厚度的计算方法种类较多,在实际研究中无法准确选择的问题,通过文献调研,对近年来致密储层束缚水膜厚度的计算方法和影响因素进行总结。研究表明:致密储层束缚水膜厚度计算方法分为以束缚水膜体积与孔喉表面积的比... 详细信息

针对致密储层束缚水膜厚度的计算方法种类较多,在实际研究中无法准确选择的问题,通过文献调研,对近年来致密储层束缚水膜厚度的计算方法和影响因素进行总结。研究表明:致密储层束缚水膜厚度计算方法分为以束缚水膜体积与孔喉表面积的比值为机理的宏观计算方法,以及将基质简化为毛细管模型或从微元角度出发的微观推导方法;束缚水膜分为初始水膜、驱替后水膜和渗吸后水膜,初始水膜厚度受储层的相对湿度、储层深度和渗透率等因素影响,驱替后水膜厚度受驱替压力、渗透率和孔隙度等因素影响,渗吸后水膜厚度受含水饱和度、离子质量浓度和基质组成等因素影响。该研究对计算致密储层束缚水膜厚度方法的选择以及提高采收率研究有一定的借鉴意义。

关键词：束缚水膜厚度致密储层影响因素渗吸驱替

一种流度调控剂的合成及其在孤东油藏的适应性研究

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石油与天然气化工 2022年第3期51卷 82-90页

作者：王增林史树彬刘希明宋岱锋田玉芹王捷梁严中国石化胜利油田分公司中国石化胜利油田分公司石油工程技术研究院四川光亚聚合物化工有限公司西南石油大学

目的针对胜利油田孤东油藏现场深部调驱段塞试验效果不理想、油藏适应性差的问题,开发具有良好油藏适应性的高效流度调控剂。方法以丙烯酰胺和十六烷基烯丙基二溴化四甲基乙二铵(CDAD)为共聚单体,通过水溶液自由基聚合法合成了一种流度... 详细信息

目的针对胜利油田孤东油藏现场深部调驱段塞试验效果不理想、油藏适应性差的问题,开发具有良好油藏适应性的高效流度调控剂。方法以丙烯酰胺和十六烷基烯丙基二溴化四甲基乙二铵(CDAD)为共聚单体,通过水溶液自由基聚合法合成了一种流度调控剂,采用FTIR和^(1)H-MNR确认了调控剂分子结构,结合黏度、动态光散射、Waring剪切、岩心流动等测试系统地研究了流度调控剂的油藏适应性。结果在优化确定的最佳反应条件(单体总质量分数为25%、氧化还原型复合低温引发剂(DW-A+DW-B)质量浓度为80 mg/L、pH值为8、尿素质量分数为0.5%)下合成的流度调控剂HAWSP-1具有良好的油藏适应性,当质量浓度为2000 mg/L时,黏度可达238.3 mPa·s,高速剪切后黏度保留率大于83%,当质量浓度为400 mg/L时,主要粒径分布在2.30~7.50μm,在渗透率为700×10^(-3)μm^(2)的岩心上建立较高阻力系数与残余阻力系数的同时,呈现出较低的动态滞留量(256.62μg/g),在平均渗透率为2500×10^(-3)μm^(2)的3层非均质岩心驱油实验中,可提高采收率20.25%。结论引入疏水单体,通过对分子结构的设计与合成条件的优化,可明显提升流度调控剂的溶液性能,还可在保证注入性的前提下呈现较好的非均质调驱性能,在非均质高含水油藏深部调驱中具有重要的参考和推广意义。

关键词：非均质高含水油藏流度调控剂缔合聚合物油藏适应性