Synthesis and Evaluation of a New Amphoteric Filter Loss Reducer for Cement Slurry
-
摘要: 以丙烯酰胺(AM)、丙烯酸(AA)、2-丙烯酰胺-2-甲基丙磺酸和一种新型阳离子单体(X)为原料,采用自由基水溶液聚合法,通过正交实验,优选出最佳合成工艺,合成出一种新型耐盐、抗高温、适用温度范围广的降失水剂TSM-1。用红外光谱、核磁共振和热失重分析对其进行表征,并对添加降失水剂TSM-1水泥浆体系的综合性能进行评价。实验结果表明,聚合物TSM-1中含有4种单体的特征官能团,热稳定性高。降失水剂TSM-1缓凝效果弱,不影响水泥石强度,TSM-1与不同类型水泥和固井缓凝剂配伍好,综合性能优异。由于在聚合物分子结构中引入一种功能性阳离子单体,合成的降失水剂TSM-1有较宽的适用范围,最高可达200℃,可控制饱和盐水水泥浆失水量在50 mL以内,满足固井施工要求。通过化学分析、扫描电镜等方法得出降失水剂作用机理为:两性离子通过多点吸附作用牢牢吸附在水泥颗粒表面,形成一层吸附膜,在失水压差下,吸附膜被挤压、充填于水泥颗粒孔隙中,堵塞失水通道、降低泥饼渗透率,从而控制失水量。Abstract: A salt-resistant, high temperature filter loss reducer TSM-1 has been developed through radical aqueous solution polymerization, with acrylamide (AM), acrylic acid (AA), 2-acrylamide-2-methyl propane sulfonic acid and a new cationic monomer (X) as raw materials. The synthesis process was optimized through orthogonal experiment. TSM-1 was characterized with IR spectrometry, NMR and thermogravimetric analysis, and the overall properties of cement slurries treated with TSM-1 were evaluated. Laboratory experimental results show that the molecules of TSM-1 have the characteristic functional groups of the four monomers, rendering TSM-1 good thermal stability. TSM-1 has weak retarding effects, meaning that it does not affect the strength of set cement. TSM-1 is compatible very well with retarding agents commonly used in oil well cement. The introduction of the functional cationic monomer into the molecules of TSM-1 renders TSM-1 a wide working temperature range; the highest temperature under which TSM-1 works properly is 200℃. With TSM-1, the filtration rate of cement slurry formulated with saturated saltwater can be controlled within 50 mL, satisfying the needs for well cementing. Chemical analysis and SEM analysis of TSM-1 indicate that the mechanisms under which TSM-1 functions are that the amphoteric ions are firmly adsorbed on the surface of cement particles through multipoint adsorption, thereby forming a layer of adsorption film. Under the filtration pressure, the adsorption film is pressed and fills into the spaces between cement particles. As such, the water loss channel is plugged and the permeability of mud cakes reduced, thereby reducing water loss of cement slurry.
-
[1] 李晓岚,石凤歧,孙举,等. 抗高温油井水泥降失水剂的研究进展[J]. 精细石油化工进展,2011,12(3):4-8.LI Xiaolan, SHI Fengqi, SUN Ju, et al. Research advances in high temperature fluid loss additive for well cement[J]. Advances in Fine Petrochemicals, 2011,12(3):4-8. [2] 王中华. 国内油井水泥外加剂研究与应用进展[J]. 精细与专用化学品,2011,19(10):45-48.WANG Zhonghua. Advances in preparation and uses of oil well cement additives in China[J]. Fine and Specialty Chemicals,2011,19(10):45-48. [3] 刘学鹏,张明昌,方春飞. 耐高温油井水泥降失水剂的合成和性能[J]. 钻井液与完井液,2015,32(6):61-64.LIU Xuepeng, ZHANG Mingchang, FANG Chunfei. Synthesis and properties of high temperature resistant oil well filtrate reducer[J]. Drilling Fluid & Completion Fluid, 2015,32(6):61-64. [4] 李中. 南海高温高压气田开发钻完井关键技术现状及展望[J]. 石油钻采工艺,2016,38(6):730-736.LI Zhong. Status and prospect of key drilling and completion technologies for the development of HTHP gasfield in South China Sea[J]. Oil Drilling & Production Technology, 2016,38(6):730-736. [5] 雒春辉, 邹建龙, 徐鹏, 等. 接枝型AMPS共聚物降失水剂的合成与性能评价[J]. 油田化学,2017(1):11-15. LUO Chunhui, ZOU Jianlong, XU Peng, et al. Synthesis and performance evaluation of graft AMPS copolymer as fluid loss additive[J]. Oilfield Chemistry, 2017(1):11-15. [6] TIEMEYER C, PLANK J SYNTHESIS.Characterization and working mechanism of a synthetic high temperature (200℃)fluid loss polymer for oil well cement ing containing allyloxy-2-hydroxy propane sulfonic(AHPS) acid monomer[J]. Journal of Applied Ploymer Science, 2013,128(1):851-860 [7] PLANK J,BRANDL A,RECALDE L N. Effect of different anchor groups on adsorption behavior and effectiveness of poly(N,N-dimethyl acrylamide-co-Ca2-acrylamido-2-methylpropanesulfonate)as cement fluid loss additive in presence of acetone-formaldehydesulfite dispers-ant[J]. Journal of Applied Polymer Science,2007,106(6):3889-3894. [8] 刘崇建,黄柏宗,徐同台,等. 油气井注水泥理论与应用[M]. 北京:石油工业出版社,2001. LIU Chongjian, HUANG Baizong, XU Tongtai, et al. Theory and application of cementing in oil and gas wells[M]. Beijing:Petroleum Industry Press,2001. [9] 王发洲,刘云鹏,胡曙光. 硅酸盐水泥与阳离子乳化沥青颗粒的相互作用机理[J]. 材料科学与工程学报, 2013(2):186-190. WANG Fazhou, LIU Yunpeng, HU Shuguang. Interaction mechanism between portland cement and cationic asphalt emulsion droplets[J]. Journal of Materials Science and Engineering, 2013(2):186-190. [10] 郭胜来, 步玉环, 郭艳霞. 耐高温油井水泥降失水剂的合成和评价[J]. 油田化学,2012(2):151-154, 166.GUO Shenglai, BU Yuhuan, GUO Yanxia. Synthesis and evaluation of high temperature fluid loss control additive used in oil well cement[J]. Oilfield Chemistry, 2012(2):151-154,166. [11] HOLLAND B J, HAY J N. The kinetics and mechanisms of the thermaldegradation of poly (methyl methacrylate) studied by thermal analysis-Fourier transform infrared spectroscopy[J]. Polymer, 2011,42(11):4825-4835. [12] 夏修建,郭锦棠,靳建洲,等.低温抗盐降失水剂LTF-1的室内合成及性能研究[J]. 天津大学学报:自然科学与工程技术版,2013,46(11):1019-1024.XIA Xiujian,GUO Jintang,JIN Jianzhou,et al. Laboratory synthesis and performance research of lowtemperature and salt-resistant fluid loss additive LTF-1[J]. Journal of Tianjin University,2013,46(11):1019-1024. [13] 于永金,靳建洲,齐奉忠,等. 抗高温抗盐降失水剂DRF-100L的研制及性能评价[J]. 钻井液与完井液, 2011,28(2):55-57.YU Yongjin, JIN Jianzhou, QI Fengzhong, et al. Research on salt-resisting and thermo-stable fluid loss additive DRF-100L[J]. Drilling Fluid & Completion Fluid, 2011,28(2):55-57. [14] 易俊霞,李瑞海. 羟乙基纤维素接枝丙烯酰胺共聚物的合成及表征[J]. 塑料,2010,39(2):32-34.YI Junxia, LI Ruihai. Synthesis and characterization of acrylamide grafted-hydroxyethyl cellulose copolymer[J]. Plastics, 2010, 39(2):32-34. [15] ZHANG LIANG, ZHUANG JIA, LIU HANBIN,et al. Terpoly-merization and performance of 2-acrylamide-2-methyl propane sulfonic acid/itaconic acid/N-vinyl-2-pryrroli-done[J]. Journal of Applied Polymer Science, 2010,117(5):2951-2957. [16] 李景润,范国梁,渠荣遴. 有机结构波普分析[M]. 天津:天津大学出版社,2006. LI Jingrun, FAN Guoliang, QU Ronglin. Analysis of organic structure by pop[M]. Tianjin:Tianjin University press,2006.
点击查看大图
计量
- 文章访问数: 606
- HTML全文浏览量: 200
- PDF下载量: 245
- 被引次数: 0