耐温抗盐聚合物驱油剂研究进展

介绍了采油用耐温抗盐聚合物驱油剂的研究进展,详细综述了近几年研发的三次采油用聚合物驱油剂的种类及其应用现状,如疏水缔合水溶性共聚物、耐温抗盐单体聚合物、复合型聚合物等;同时探讨了耐温抗盐聚合物驱油剂的制备方法,并明确了以后的研究方向。     

驱油用耐温抗盐聚合物研究进展

本文综述了国内外水溶性耐温抗盐单体聚合物、疏水缔合聚合物、两性聚合物、梳形聚合物、溶液复合型、交联聚合物等方面的研究进展,并对以上几类水溶性聚合物的耐温抗盐机理进行了阐述和分析,指出了部分类型聚合物存在的缺陷,提出了耐温抗盐聚合物交联体系和溶液复合型在驱油用耐温抗盐聚合物方面具有极大的研究价值和应用前景。     

提高三次采油用聚合物耐温抗盐性的研究进展

综述了国内外三次采油用五大类驱油耐温抗盐水溶性聚合物的研究现状,提出一种提高聚丙烯酰胺类聚合物耐温抗盐性能的的新方法：即开发一种廉价高效二价金属离子络合剂。分析了二价金属离子络合剂的作用机理,并明确了以后的研究方向。     

三次采油用耐温抗盐聚合物的研究进展

概述三次采油用耐温抗盐聚合物的研究进展,特别是在超高分子量聚丙烯酰胺、丙烯酰胺与耐温抗盐单体的共聚物、疏水缔合聚合物、新型结构的聚丙烯酰胺共聚物等几个热门领域上总结了较新的研究结果。     

三次采油用抗温抗盐聚合物分析

随着石油需求的不断增长，油田技术也需要更新和升级。三次采油技术在油田生产中得到了广泛的应用。油田企业要提高采收率，开发和利用耐高温、耐盐聚合物是提高三次采油技术水平的重要手段。本文介绍并分析常规聚合物驱油工艺，并通过数据论述了三次采油用聚合物PSA的性能优于常规的部分水解型聚丙烯酰胺（HPAM）。     

耐温耐盐疏水缔合水溶性聚合物的研究进展

疏水缔合聚合物相较于传统的聚丙烯酰胺由于其耐温耐盐稳定性好等特点成为近年来油田上主要的研究对象,本文就从国内外调研综述了疏水缔合聚合物的研究新进展,并从分子的主链、侧链等方面提出了提高疏水缔合聚合物耐温抗盐性能的途径,最后腱鬻了琉水缔合聚合物在油气开采、涂料、污水处理、药物缓释等广阔的应用前景．     

疏水缔合聚合物增稠性能研究

在不同条件下 ,进行了疏水缔合聚合物增稠性能研究 ,结果表明疏水缔合聚合物在蒸馏水中 ,基本上看不到疏水缔合效果 ;疏水缔合聚合物的氯化钠溶液或氯化钙溶液 ,在缔合临界矿化度之前 ,随着溶液矿化度的增大 ,溶液粘度逐渐降低 ;在缔合临界矿化度之后 ,随着溶液矿化度的增大 ,溶液粘度迅速升高 ,达到极大值后又逐渐下降 ;油田采出污水中均存在较高含量的钙、镁等高价离子 ,疏水缔合聚合物在油田采出污水中 ,随着矿化度和温度的升高 ,疏水缔合增稠效果越差。认为目前把疏水缔合聚合物作为油田三次采油用耐温抗盐聚合物研制的主攻方向是不合适的     

耐温抗盐型聚丙烯酰胺研究进展

介绍了提高聚丙烯酰胺耐温抗盐性能的主要途径,综述了国内外耐温抗盐型聚丙烯酰胺的研究进展,指出了合成耐温抗盐单体共聚物和梳形聚合物是提高聚合物耐温抗盐性的有效途径.     

抗高温耐盐型聚丙烯酰胺产品的研究进展

由于油田浅层及高渗区开采逐步完成,聚丙烯酰胺在油田三次采油中的应用也随之向高温油藏区扩展,故而提高聚丙烯酰胺的耐温耐盐及抗剪切性能成为当前的迫切研究课题。本文主要从探讨聚丙烯酰胺易降解机理,提出通过提高聚合物链的刚性、引入不同性能的单体等,论述可以改善聚丙烯酰胺类产品耐温、耐盐及抗剪切性能途径及方法,讨论了以上不同技术的特点,综合论述了国内外相关研究。展望聚丙烯酰胺产品研究发展方向。     

新型聚合物驱油剂的研究和应用

分析了三次采油用聚合物驱油剂开发应用现状。针对目前聚合物驱油剂存在耐温抗盐性差等问题，重点介绍了疏水缔合型聚合物的最新研究成果。     

聚合物驱油技术综述

综述了目前石油开采过程中常见的聚合物驱油剂种类,包括耐高温耐盐聚合物驱油剂、生物聚合物(黄原胶)、交联聚合物、疏水缔合聚合物、星形聚合物、两性聚合物等;以此为基础介绍了四种聚合物驱技术类型,包括热驱、混相驱、化学驱和微生物采油;并简单介绍了聚合物驱油技术在油田开发过程中所带来的负面矛盾及目前的主要解决方法。     

Camelina oil‐ and linseed oil‐based polymers with bisphosphonate crosslinks

Natural oils are the attractive biobased alternatives for petroleum derived chemicals in the production of polymers. A series of new biodegradable polymers based on epoxidized camelina oil was synthesized and investigated. The thermal, mechanical, swelling properties, hydrolysis, biodegradation, and bioresistance of the camelina oil‐based polymers with bisphosphonate crosslinks were studied and compared with those of the analogous polymers based on epoxidized linseed oil. The dependence of the polymer properties on the density of crosslinks was observed. The obtained results showed that the properties of the camelina oil‐based polymers are comparable with those of the linseed oil‐based polymers and that camelina oil is a promising starting material for the synthesis of polymers. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40683.     

Isolation and characterization of polymers in heated olestra and an olestra/triglyceride blend

High molecular weight components in thermally oxidized olestra (formerly called sucrose polyesters) and a mixture of olestra and soybean oil were characterized. The high molecular weight components of these oils were separated by preparative size exclusion chromatography and analyzed intact by mass spectrometry, infrared, and nuclear magnetic resonance spectroscopy. The materials isolated from the heated olestra were identified as olestra polymers. Materials isolated from the heated mixed oil (olestra and soybean oil) were identified as polymers of olestra and copolymers of olestra and triglycerides. Polymer linkages identified were identical to those resulting from thermal oxidation of natural vegetable oils of similar fatty acid composition.     

丙烯酰胺类聚合物在油田中的应用

目前丙烯酰胺类聚合物已经在油田得到了广泛的应用,本文主要介绍了该类聚合物在油田中的主要应用领域,同时也提出了现有的丙烯酰胺类聚合物存在的不足,表明开发出更适合于油田需要的丙烯酰胺类聚合物的重要性和紧迫性。     

Design and synthesis of novel di- and triblock amphiphilic polyelectrolytes: Improving salt-induced viscosity reduction of water solutions for potential application in enhanced oil recovery

In the present study, three different block copolymers based on styrene, tert-butyl methacrylate, and glycidyl methacrylate (GMA) were synthesized via sequential atom transfer radical polymerization. The addition of the GMA block was found to be best performed at 60°C. The polymers were then hydrolyzed and neutralized, to afford amphiphilic block copolymers, and the rheological properties of their aqueous solutions were measured, in order to investigate solution properties relevant for enhanced oil recovery, as a function of the polymer structure. It was observed that these polymers behave as thickening agents with shear thinning behavior. As expected, the polymers were sensitive to the presence of salt, as lower viscosities were recorded in saline water. However, the viscosity is less affected by high salinity, when compared to previously studied analogous diblock systems. In the best case, the viscosity only decreased by a factor of 1.8 upon salt addition whereas it decreased by a factor of 10 in previously reported non-GMA containing polymers. Finally, thermo-responsive behavior was found for one of the synthesized polymers. In particular, a hydrolyzed triblock poly[styrene-b-tert-butyl methacrylate-b-glycidyl methacrylate], which synthesis is reported here for the first time, showed a thermothickening behavior, promising for the intended application in oil recovery.     

Transesterification of heated rapeseed oil for extending diesel fuel

Fatty acid methyl esters are well established as an alternative fuel called “biodiesel.” For economic reasons, used frying oil is an interesting alternative feedstock for biodiesel production. The chemical changes that occur during heating of rapeseed oil, especially the formation of polymers, were investigated. Heated rapeseed oil samples were transesterified with methanol and analyzed by size-exclusion chromatography. During heating, the amount of polymers in the starting oil increased up to 15 wt%, but only up to 5 wt% in the transesterified samples. So during transesterification, dimeric and trimeric triglycerides in the starting oil were mainly converted into monomeric and dimeric fatty acid methyl esters. The amount of polymeric fatty acid methyl esters had a negative influence on fuel characteristics. After 6 h of heating, the amount of Conradson carbon residue and after 16 h the viscosity exceeded that of the existing specifications for biodiesel. Therefore, the amount of polymers in waste oil is a good indicator for the suitability for biodiesel production. Presented in part at the 89th Annual Meeting, American Oil Chemists’ Society, Chicago, IL, May 1998.     

树枝状聚合物的合成和应用

树枝状聚合物具有高度支化的结构和独特的单分散性,使这类聚合物具有特殊的性质和功能,在生物医药、材料改性、工业催化、石油工业等领域有着良好的应用前景。介绍了树枝状聚合物的结构特点、合成方法及应用。     

Polymers for enhanced oil recovery: A paradigm for structure–property relationship in aqueous solution

Recent developments in the field of water-soluble polymers aimed at enhancing the aqueous solution viscosity are reviewed. Classic and novel associating water-soluble polymers for enhanced oil recovery (EOR) applications are discussed along with their limitations. Particular emphasis is placed on the structure–property correlations and the synthetic methods. The observed rheological properties are conceptually linked to the polymer chemical structure (1) and topology (2). In addition, the influence of external parameters, e.g. temperature, pH, salt, and surfactant, on the rheological behavior is reviewed. Progress booked in deeper understanding of the structure–property relationship is thoroughly discussed. Furthermore, a critical overview of the synthetic methods as well as of the solution properties of these polymers is provided. In this respect the influence of “internal” (i.e. chemical structure) and “external” (vide supra) factors on these properties provide a conceptual toolbox for the rationalization of the response of water-soluble polymers to external stimuli. In turn, such rationalization constitutes the basis for the design of new polymeric structures for EOR applications.     

疏水缔合水溶性聚合物的合成与表征

综述了疏水缔合型水溶性聚合物合成与表征方法，介绍了在合成过程中提高油溶性单体和水溶性单体混溶性的方法，简述了疏水物质含量的核磁共振、紫外光谱、裂解气相色谱等测定方法。