油田储层敏感性评价实验分析

对油田储层敏感性评价进行了实验分析通过敏感性实验结果表明，某油田储层无速敏，存在中等水敏特性，致使注水压力上升、渗透性降低。     

低渗透油田化学清洗防蜡技术探讨

针对最近几年油田开发的发展,以及各大油田企业对防蜡技术的高度重视,通过全面合理的分析低渗透油田防腊的具体特点,透切地了解各种防腊技术,且有针对性地对开发低渗透油田采用适合的防腊技术,争取以最少的成本投入产出最大的经济效益,从而实现双赢。     

纯梁滩坝砂油藏注水井防膨研究及应用

主针对纯梁滩坝砂油藏低孔、低渗、储层敏感性强,注水工作难度大,注入压力高、注入水不配伍、水敏等一直困扰着低渗滩坝砂油藏注水开发。为此采油厂围绕“做大滩坝”的工作目标,与地质院、采油院结合,开展了滩坝砂油藏防膨技术研究,并在樊147块、樊15l块和高890块应用实施,取得了显著的效果。     

低渗透油藏稳定注水研究与应用

本文针对特低渗油藏储层物性差，注水启动压力高，开展注入水配伍性研究，系统分析注水压力高的问题，优化转注井大型防膨技术，并进行现场实践，从注水效果、启动压力、压降情况看，取得了显著的效果，实现了特低渗油藏稳定注水。     

浅析低渗透油田储层保护技术

低渗透油田作为我国油气田开发的主战场已经是不争的事实,如何减少各个作业对油层的损害,提高低渗透油田的开发效益,对我国石油工业持续稳定发展具有至关重要的作用。在介绍低渗透油田开发特点的基础上,针对各个作业过程对储层的伤害特点,提出保护措施,为低渗透油田储层保护提供借鉴。     

人工井壁再造防泥砂工艺试验

文章分析了某油田地层出泥砂的原因及特点,介绍了人工井壁再造防泥砂工艺的原理以及施工工艺中各种材料的优选及参数的优化,验证了该工艺针对本油田出细粉状泥砂造成地层亏空、油井频繁检泵等问题的治理效果,为该油田出泥砂井治理探索了适宜的新工艺和新手段。     

感光乳剂稳定剂及防灰雾剂作用机理的综述

本文简明扼要地阐述了从70年代至90年代的感光乳剂稳定剂和防灰雾剂作用机理方面所开展的研究工作。     

高温高盐油藏常用起泡剂研究进展

泡沫流体以其低密度、高粘度和独特的流变性在油田开采中被广泛应用,然而形成泡沫的必要组分是起泡剂,其最重要的性能就是起泡性能和稳泡性能。但在国内一些高温、高盐油藏中,地下泡沫的起泡性能和稳泡性能与室内实验相比均有所下降,未能达到预期的原油采收率。论述了高温、高盐条件下导致泡沫消泡的微观机理;介绍了目前高温、高盐油藏常用的单组分起泡剂、复合/复配型起泡剂的基本类型和苛刻的储层条件对不同类型起泡剂泡沫性能的制约性;同时综述了国内外高温、高盐油藏常用起泡剂的研究进展及油田应用现状;以分子结构、有效官能团、复配微观规律和绿色环保为主要研究方向,展望了我国高温、高盐油藏起泡剂研究发展趋势。     

模拟油田地层水环境中套管钢的结垢规律及防垢剂的选用

集输系统结垢制约了油田开采,注水管线形成的水垢增大了水流阻力和注水能耗,导致管线出现局部腐蚀。模拟油田地层水环境,研究了pH值、温度、盐含量、CO2分压对套管钢结垢规律的影响,并筛选了合适的阻垢剂以有效防止套管钢的破坏、失效。结果表明:套管钢的结垢速率随pH值增大、温度升高、CO2分压增大而增加,随盐含量增加而减小;具有防腐蚀、阻垢双重作用的阻垢剂能更有效地保护套管钢,减缓或避免其发生腐蚀和结垢。     

Construction of Dual-Channel Water Transport in Mesoporous Silica Low Humidity Sensors to Achieve High Sensitivity

In this paper, strong hydrophilic poly(ionic liquid)s (PILs) are selectively grafted on different positions (mesoporous channels and outer surface) of mesoporous silica via thiol-ene click chemical reaction. The purposes of selective grafting are on the one hand, to explore the differences of adsorption and transportation of water molecules in mesoporous channels and on the outer surface, and on the other hand, to combine the two approaches (intra-pore grafting and external surface grafting) to reasonably design SiO₂@PILs low humidity sensing film with synergetic function to achieve high sensitivity. The results of low relativehumidity （RH） sensing test show that the sensing performance of humidity sensor based on mesoporous silica grafted with PILs in the channels is better than that of humidity sensor based on mesoporous silica grafted with PILs on the outer surface. Compared with water molecules transport single channel, the construction of dual-channel water transport significantly improves the sensitivity of the low humidity sensor, and the response of the sensor is up to 4112% in the range of 7–33% RH. Moreover, the existence of micropores and the formation of dual-channel water transport affect the adsorption/desorption behaviors of the sensor under different humidity ranges, especially below 11% RH.     

Coexistence of Low Damping and Strong Magnetoelastic Coupling in Epitaxial Spinel Ferrite Thin Films

Low‐loss magnetization dynamics and strong magnetoelastic coupling are generally mutually exclusive properties due to opposing dependencies on spin–orbit interactions. So far, the lack of low‐damping, magnetostrictive ferrite films has hindered the development of power‐efficient magnetoelectric and acoustic spintronic devices. Here, magnetically soft epitaxial spinel NiZnAl‐ferrite thin films with an unusually low Gilbert damping parameter (<3 × 10^?3), as well as strong magnetoelastic coupling evidenced by a giant strain‐induced anisotropy field (≈1 T) and a sizable magnetostriction coefficient (≈10 ppm), are reported. This exceptional combination of low intrinsic damping and substantial magnetostriction arises from the cation chemistry of NiZnAl‐ferrite. At the same time, the coherently strained film structure suppresses extrinsic damping, enables soft magnetic behavior, and generates large easy‐plane magnetoelastic anisotropy. These findings provide a foundation for a new class of low‐loss, magnetoelastic thin film materials that are promising for spin‐mechanical devices.     

钢制管材在空调水系统中的选型及应用

阐述了空调水系统中几种常用钢管管材的应用范围和不同连接方式;分析了开式空调水系统和闭式空调水系统之间的区别,并结合不同的空调水处理方式给出了不同的空调水系统中推荐应用的钢管管材及其连接方式和几点应用原则。     

ZnO粉体在水中的分散及稳定性研究

目前对ZnO粉体分散性的研究,大多都基于ZnO固含量较小的情况,但悬浮液中固相含量不同,分散条件会有很大差异。本文中以聚丙烯酰胺和聚乙二醇20000为分散剂,利用沉降试验衡量浆料的稳定性,运用正交设计法研究了分散剂加入量、pH值、搅拌速度和搅拌时间等各项因素对制备稳定的固相含量较高的ZnO水悬浮液的影响,并对其机理进行分析。获得的制备固含量为20%ZnO水悬浮液的最优化配方为:(1)分散剂使用PEG20000时,加入量为0.5%,pH值为9,搅拌速度为200r/min,时间为0.5h;(2)分散剂使用聚丙烯酰胺时,加入量为0.01%,pH值为9,搅拌速度为200r/min,时间为1h。     

新3G系统--移动无线互联网

提出一种新3G宽带移动互联网系统。该系统是在3G框架之内，使用3G的工作频率，采用现有的技术使之具有IMT-2000以后系统特征的宽带无线移动互联网系统。竞争的运营商可以利用其已经有的固定宽带互联网资源建设发展宽带无线移动互联网，并且可以以极低的成本在该系统上提供新话音和多媒体业务。     

Evaluation of Operation Flexibility and Operation Selection in Multi-agent Based Production Scheduling

Based on the concept of operation flexibility, we study the relationship amongmultiple operation sequences and provide a flexibility measure for operation sequences. Acriterion is proposed to prioritize each operation (rather than sequence). Under the multi-agentarchitecture the criterion can be used to guide the decision-making procedure during produc-tion scheduling so that there is an adequate flexibility at each decision point. Experimentalresults demonstrate the efficiency of the criterion when it is used as a scheduling heuristic.It can increase flexibility of manufacturing systems, and consequently improve the per-formance of the systems.     

Investigation of salt and alkali sensitivity damage mechanisms in clay-containing reservoirs using nuclear magnetic resonance

A novel experimental methodology based on nuclear magnetic resonance (NMR) is proposed to examine sensitivity damage mechanisms in clay-containing reservoirs. We successfully implemented this methodology for Nanyang tight oil reservoir. By performing experiments under conditions of different brine salinities and pH values, the degrees of potential salt and alkali sensitivity damage were determined first; thereafter, the damage mechanisms were identified by analyzing the NMR T₂ spectra and (magnetic resonance) MR images. The T₂ spectra clearly showed the quantitative exchange between small pores and big pores, and the changes in pore size at different positions in the core were visualized in the MR images obtained before the centrifugation of the core. To understand the behavior of clay size variation and clay migration in the damage process, the core was centrifuged, leaving only the clay bound water in the core, and then MR images were acquired again. The salt sensitivity damage mechanisms of clay swelling and clay migration and alkali sensitivity damage mechanism of clay dispersion and migration in Nanyang tight oil reservoir were effectively identified. Additionally, owing to the use of core-scale MR images, the sensitivity damage processes at the reservoir scale could be interpreted well.     

油田水中阴离子及温度对P110钢腐蚀电化学行为的协同影响

为了获得油田水中阴离子及温度对P110钢腐蚀行为影响的协同性,采用动电位极化、电化学阻抗谱及正交试验等方法研究了在不同条件下模拟油田水对P110钢腐蚀电化学行为的影响。结果表明:随HCO_3~-、Cl~-、S~(2-)浓度增大,P110钢在模拟溶液中的腐蚀倾向增大,腐蚀速率先增大后减小;试验条件下,低浓度的各离子均起到了协同促进作用;温度升高,腐蚀速率则先减小后增大,并影响了其腐蚀倾向;随着典型阴离子浓度增大,电荷传递电阻先减小后增大,P110钢的腐蚀活性也呈相同趋势,温度则相反;试验研究范围内,影响最大的因素是HCO_3~-浓度,其次是S~(2-)浓度,影响最小的是Cl~-浓度,且HCO_3~-浓度、S~(2-)浓度、温度之间的相互作用小。