液态二氧化碳增稠过程中相态变化及机理探讨

王满学; 何静; 陈刚; 朱彤

doi:10.3969/j.issn.1001-5620.2017.03.019

液态二氧化碳增稠过程中相态变化及机理探讨

doi: 10.3969/j.issn.1001-5620.2017.03.019

1. 西安石油大学化学化工学院, 西安 710065;
2. 陕西延长石油(集团)有限股份公司研究院, 西安 710075;
3. 中国石油华北石油管理局苏里格项目部, 内蒙古乌审旗 173000

详细信息

作者简介:
王满学,教授级高工,研究方向为油气田增产化学与工艺。E-mail:1470736223@qq.com。

中图分类号: TE357.12
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出版历程
- 收稿日期: 2017-02-05
- 刊出日期: 2017-05-31

Phase Change in Liquid CO₂ Thickening Process and the Mechanisms Thereof

1. College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065;
2. Research Institute of Shaanxi Yanchang Petroleum(Group) Ltd., Xi'an, Shaanxi 710075;
3. Sulige Project of CNPC Huabei Petroleum Administration, Wushen Qi, Inner Mongolia 173000

摘要

摘要: 液态二氧化碳（LCO₂）压裂液黏度低一直是制约新技术推广应用的关键问题。首次利用LCO₂与增稠剂LPE和胶束促进剂CJ-1混合后LCO₂的相态变化，探讨研究LCO₂-LPE-CJ-1压裂液的增稠机理，同时借助HAAKE黏度计的D300/400系统验证LPE-CJ-1体系对LCO₂增稠效果，利用偏光显微镜对LCO₂-LPE-CJ-1压裂液的胶束形态进行验证。实验结果表明：LPE-CJ-1体系可使LCO₂-LPE-CJ-1压裂液增黏且最大黏度为112 mPa·s左右，是目前文献报道的LCO₂的最大黏度（20 mPa·s）的将近6倍。LCO₂-LPE-CJ-1压裂液体系的增稠机理是LPE-CJ-1分子间的离子络合作用后形成的棒状胶束，类似于交联聚合物形成分子间相互缠绕的三维空间网状结构体。
- 液态CO₂ /
- 压裂液 /
- 增稠机理 /
- 探讨
Abstract: In reservoir fracturing with liquid CO₂ (LCO₂), low viscosity of the fracturing fluid has long been a problem restricting the spread of this new fracturing technology.The phase change of LCO₂ after mixing it with a thickening agent LPE and a micelle enhancer CJ-1 has been studied to investigate the thickening mechanisms of LCO₂ -LPE-CJ-1. HAAKE viscotesters (Model D300/D400) were used to verify the thickening effect of LPE+CJ-1 on the LCO₂. Using polarizing microscope, the state of the micelles of the LCO₂ -LPE-CJ-1 fracturing fluid was studied. The experimental results showed that LPE and CJ-1 can thicken the LCO₂ -LPE-CJ-1 fracturing fluid to about 112 mPa·s, nearly 6 times of the highest viscosity of LCO₂ (20 mPa·s)that had been reported previously. The thickening mechanismsare that,through ionic complexation between the molecules of LPE and CJ-1, the two molecules form rod-shaped micelles, a structure analogous to the 3-D spatial network structure formed by the intertwined molecules of a crosslinked polymer.
- Liquid CO₂ /
- Fracturing fluid /
- Thickening mechanism /
- Investigate

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参考文献(20)

[1]	贾承造,郑民,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-136. JIA Chengzao,ZHENG Min,ZHANG Yongfeng.Unconventional hydrocarbon resources in China and the prospect of exploration and development[J].Petroleum Exploration and Development,2012,39(2):129-136.
[2]	HEIDARYAN E,HATAMI T,RAHIMI M,et al.Viscosity of pure carbon dioxide at supercritical region:measurement and correlation approach[J].The Journal of Super Critical Fluids,2011,56(2):144-151.
[3]	HELLER J,DANDGE D K,CARD R,et al.Direct thickeners for mobility control CO 2 floods[J].SPE Journal,1995,12(10):679-686.
[4]	DANDGE D K,HELLER J,LIEN C,et al.Kinetics of 1-hexene polymerization[J].Journal of Applied Polymer Science,1986,32:5373-5384.
[5]	T E R R Y R E,Z A I D Z,A N G E L O S C,et al.Polymerization in supercritical CO₂ to improve CO₂/oil mobility ratios[C].SPE 16270,1987.
[6]	SARBU T,STYRANCE T,BECKMAN E J.Non-fluorous polymers with very high solubility in supercritical CO₂ down to low pressure[J].Nature,2000,405(6783):165-168.
[7]	TAPRIYAL D,WANG Y,ENICK R M,et al.Poly (vinyl-acetate),poly ((1-o-(vinyoxy) ethyl-2,3,4,6-tetra-O-acetyl -d-glucopytanoside) and amorphous poly (lactic acid) are the most CO₂ -soluble oxygenated hydrocarbon based polymers[J].Journal Supercritical Fluid,2008,(46):252-257.
[8]	DESIMONE J M,MAURY E E,MENCELOGLU Y Z,et al.Dispersion polymerizations in supercritical carbon dioxide[J].Science,1994(265):356-359.
[9]	HUANG Z H,SHI C M,XU J H,et al.Enhancement of the viscosity of carbon dioxide using styrene/fluoroacrylate copolymers[J].Macromolecules,2000,33(15):5437-5442.
[10]	HELLER J P,DANDGE D K,CARD R J,et al.Direct thickeners for mobility control of CO₂ floods[J].SPE,1985,(10):679-685.
[11]	BOTCHU VARA,SIVA JYOTI,SEUNG WOOK BAEK,et al.Thickening of CO₂ using copolymerapplication in CO₂ management[C].ICFD,2014.
[12]	BAE J H,IRANI C A.A laboratory investigation of viscosified CO 2[C].SPE 20467,1993.
[13]	HELLER J P,D KOVARIK F S,TABER J J,et al.Improvement of CO₂ flood performance[M].Socorr:New Mexico Institute of Mining and Technology,New Mexico Petroleum Recovery Research Center,1986.
[14]	SHI C,HUANG Z,BECKMAN E,et al.Semifluorinated trialktyltin fluorides and fluoro-ether telechelic ionomers as viscosity enhancing agents for carbon dioxide[J].Industrial Engineering Chemistry Research,2001,40(3):908-913.
[15]	LAVE F M,CHUNG F T,BURCHFIELD T E.Use of entrainers in improving mobility control of supercritical CO 2[J].SPE J,17344,1990.
[16]	GULLAPALLI P,TSAU J S,HELLER J.Gelling behavior of 12-hydroxystearic acid in organic fluids and dense CO 2[C].SPE 28979,1995.
[17]	沈爱国,刘金波,余跃惠,等.CO₂ 增稠剂聚醋酸乙烯酯-甲基倍半硅氧烷的合成[J].高分子材料与工程,2011,24(11):157-159. SHENG Aiguo,LIU Jinbo,SHE Yuehui,et al.Synthesis of the copolymer of vinylacete-methylsilsesquioxane as a potential carbon dioxide thickener[J].Polymer Materials Science and Engineering,2011,24(11):157-159.
[18]	韩海水,袁士义,李实,等.二氧化碳在碳烃中的溶解性能及膨胀效应[J].石油勘探与开发,2015,42(1):88-93. HAN Haishui,YUAN Shiyi,LI Shi,et al.Dissolving capacity and volume expansion of carbon dioxide in chain n-alkanes[J].Petroleum Exploration&Development,2015,42(1):88-93.
[19]	宋振云,苏伟东,杨延增,等.CO₂ 干法加砂压裂技术研究与实践[J].开发工程,2014,34(6):55-59. SONG ZhenYun,SU WeiDong,YANG Yanzeng,et al.Experimental studies of CO₂/sand dry-frac process[J].Natural Gas Industry,2014,34(6):55-59.
[20]	TRICKETT K,XING D,ENICK R,et al.Rod-like micelles thicken of CO 2[J].Langmuir,2010,26(1):83-88.