The Synthesis of ATP Loaded Heterocyclic Amphoteric Copolymer and Its Performance and Mechanisms of Reducing Filtration Rate under Ultra-High Temperatures
-
摘要: 现有AMPS共聚物类降失水剂高温稀释降黏作用明显，对固井水泥浆的超高温沉降稳定性尤其不利。对此，合成了一种凹凸棒土（ATP）负载杂环两性共聚物型超高温固井降失水剂ATP-FLA以减弱共聚物的高温分散副作用。对负载前后的产品进行了综合性能对比，结果表明，在150～240 ℃范围内，加有4.0%～6.0%负载型降失水剂ATP-FLA、2.0%～4.0%悬浮剂的水泥浆API失水量不大于40 mL，沉降密度差不大于0.03 g/cm3，超高温稳定性良好。在240 ℃、120 MPa下养护后的水泥浆流性指数达到0.8976，浆体高温稠度高，剪切阻力大。同时，利用超高温固井现场水泥浆对ATP-FLA进行了适应性评价，结果表明其能够在有效控制API失水量的同时不影响水泥浆的其他性能。此外，利用分子动力学模拟研究了杂环两性共聚物FLA的作用机理。模拟分析结果表明，杂环两性共聚物FLA相比于常规阴离子型共聚物的优势在于其减弱了自身分子链受环境中金属离子的“去水化”效应干扰，更耐金属离子进攻，使其更加适应水泥浆体系的碱金属离子溶液环境。Abstract: The AMPS copolymer filter loss reducers have obvious thinning effect which is detrimental to the ultra-high temperature settling stability cement slurries. To solve this problem, an ultra-high temperature cement slurry filter loss reducer ATP-FLA is developed for use at elevated temperatures to weaken the high temperature dispersion side-effect of pure copolymers. ATP-FLA is synthesized as an attapulgite (ATP) loaded heterocyclic amphoteric copolymer. Comparison of the copolymer with and without ATP loading shows that in a temperature range of 150-240 ℃, a cement slurry treated with 4.0%-6.0% ATP-FLA and 2.0%-4.0% suspending agent has API filtration rate of less than 40 mL and density difference from settlement of the cement slurry of not greater than 0.03 g/cm3. After aging at 240 ℃ and 120 MPa, the cement slurry has flow index of 0.897,6 as well as high thickness and shear resistance at high temperatures. To evaluate the compatibility of the filter loss reducer ATP-FLA, ultra-high temperature cement slurry samples were taken from several wellsites. The evaluation test results show that the ATP-FLA can control the filtration rate without affecting the other properties of the cement slurries. Study on the working mechanisms of ATP-FLA using molecular dynamics shows that ATP-FLA has advantages over conventional ionic copolymers in that the disturbances to the molecular chains of ATP-FLA from the “dehydration” effect of metal ions in the environment are weakened, and the ATP-FLA molecules are therefore resistant to the attack of the metal ions, and this is why, on the basis of mechanisms, the ATP-FLA filter loss reducer is more adaptable to the metal ion environment prevailing in cement slurries.
-
图 6 240 ℃下2种共聚物FLA-1（a, c）和FLA-2（b, d） 的阴离子基团中的O原子分别与Na原子、Ca原子以及水分子中H原子间的径向分布函数
注：1 Å=0.1 nm。
表 1 含ATP-FLA或FLA的水泥浆 降失水性能与沉降稳定性能
水泥浆 T/
℃降失水剂/
%悬浮剂/
%FLAPI/
mL△ρ/
g·cm−3ATP-FLA 150 4 2 38 0.01 200 5 3 28 0.03 240 6 4 35 0.02 FLA 200 5 3 28 0.04 240 6 4 36 0.04 
下载: 导出CSV
表 2 含FLA或ATP-FLA的水泥浆在240 ℃、 120 MPa养护30 min后浆体的六速读数
水泥浆 φ3 φ6 φ100 φ200 φ300 φ600 含FLA 3.50 6.50 101.00 185.50 258.00 >300 含ATP-FLA 4.00 7.00 122.50 225.00 >300 >300
下载: 导出CSV
表 3 掺有FLA或ATP-FLA的水泥浆在240 ℃、 120 MPa养护30 min后浆体的剪切应力
水泥浆 不同剪切速率（s−1）下的剪切应力τ/Pa 5.11 10.23 170.45 340.90 511.35 1022.70 含FLA 1.79 3.32 51.61 94.79 131.84 含ATP-FLA 2.04 3.58 62.60 114.98
下载: 导出CSV
-
[1] 郑民,李建忠,吴晓智,等. 我国主要含油气盆地油气资源潜力及未来重点勘探领域[J]. 地球科学,2019,44(3):833-847.ZHENG Min, LI Jianzhong, WU Xiaozhi, et al. Potential of oil and natural gas resources of main hydrocarbon-bearing basins and key exploration fields in China[J]. Earth Science, 2019, 44(3):833-847. [2] 严思明,杨坤,王富辉,等. 新型耐高温油井降失水剂的合成与性能评价[J]. 石油学报,2016,37(5):672-679.YAN Siming, YANG Kun, WANG Fuhui, et al. Synthesis and performance evaluation of novel high-temperature-resistant fluid loss additive for oil wells[J]. Acta Petrolei Sinica, 2016, 37(5):672-679. [3] 赵建胜,代清,霍锦华,等. 高温固井水泥浆用降失水剂GT-1的制备及性能[J]. 钻井液与完井液,2022,39(2):234-240.ZHAO Jiansheng, DAI Qing, HUO Jinhua, et al. Preparation and application of fluid loss additive GT-1 for high temperature cementing slurry[J]. Drilling Fluid & Completion Fluid, 2022, 39(2):234-240. [4] 刘湘华. 油井水泥浆高温悬浮稳定剂的开发及性能研究[J]. 钻井液与完井液,2019,36(5):605-609.LIU Xianghua. Development of and study on a high temperature suspension stabilizer for oil well cement slurries[J]. Drilling Fluid & Completion Fluid, 2019, 36(5):605-609. [5] CHEN X, WANG C W, XUE Y C, et al. A novel thermo-thickening viscosity modifying admixture to improve settlement stability of cement slurry under high temperatures[J]. Construction and Building Materials, 2021, 295:123606. doi: 10.1016/j.conbuildmat.2021.123606 [6] 梁艳丽, 李鹏翔, 王爱民, 等. 一种油井水泥悬浮型聚合物缓凝剂及制备方法和油井水泥浆体系: CN201910301817.5[P]. 2021-07-16.LIANG Yanli, LI Pengxiang, WANG Aimin, et al. A suspension-type polymer retarder for oil well cement and its preparation method and oil well cement slurry system: CN201910301817.5[P]. 2021-07-16. [7] 罗敏,黄盛,何旭晟,等. 耐200 ℃固井水泥用悬浮剂的制备与性能表征[J]. 钻井液与完井液,2022,39(4):472-480.LUO Min, HUANG Sheng, HE Xusheng, et al. The preparation and performance characterization of a cement suspending agent resistant to 200 ℃[J]. Drilling Fluid & Completion Fluid, 2022, 39(4):472-480. [8] 于永金,张航,夏修建,等. 超高温固井水泥浆降失水剂的合成与性能[J]. 钻井液与完井液,2022,39(3):352-358.YU Yongjin, ZHANG Hang, XIA Xiujian, et al. Synthesis and study of an ultra-high temperature filtrate reducer for cement slurries[J]. Drilling Fluid & Completion Fluid, 2022, 39(3):352-358. [9] 苏如军,李清忠. 高温缓凝剂GH-9的研究与应用[J]. 钻井液与完井液,2005,22(z1):89-92.SU Rujun, LI Qingzhong. Study and application of high temperature retarder GH-9 for cement slurry[J]. Drilling Fluid & Completion Fluid, 2005, 22(z1):89-92. [10] 王慧贤,才世杰,张广峰,等. GH-9油井水泥缓凝剂的性能与作用机理研究[J]. 新型建筑材料,2017,44(7):6-10,75.WANG Huixian, CAI Shijie, ZHANG Guangfeng, et al. Study on the performance and mechanism of GH-9 oil well cement retarder[J]. New Building Materials, 2017, 44(7):6-10,75. [11] 李科,陈霄峰,庄苍伟,等. SO42−/SnO2−凹凸棒土合成及在柠檬酸三异丁酯合成中的应用[J]. 广州化工,2022,50(5):40-43.LI Ke, CHEN Xiaofeng, ZHUANG Cangwei, et al. Synthesis of SO42−/SnO2− attapulgite and its application in synthesis of triisobutyl citrate[J]. Guangzhou Chemical Industry, 2022, 50(5):40-43. [12] 喻文娟,郭锦棠,郭春,等. 耐盐降失水剂AMPS/DMAA/IA的合成及其性能评价[J]. 化学工业与工程,2018,35(1):45-50.YU Wenjuan, GUO Jintang, GUO Chun, et al. Synthesis and performance evaluation of salt-resistant fluid loss additive AMPS/DMAA/IA[J]. Chemical Industry and Engineering, 2018, 35(1):45-50. [13] GUO S L, BU Y H. Synthesis and application of 2-acrylamido-2-methyl propane sulfonic acid/acrylamide/N, N-dimethyl acrylamide/maleic anhydride as a fluid loss control additive in oil well cementing[J]. Journal of Applied Polymer Science, 2013, 127(5):3302-3309. doi: 10.1002/app.37745 [14] 郭锦棠,喻文娟,肖淼,等. 海水水泥浆体系降失水剂LTF-100L的合成及性能[J]. 石油化工,2016,45(8):988-993.GUO Jintang, YU Wenjuan, XIAO Miao, et al. Synthesis and properties of LTF-100L fluid loss additive available in seawater-based cement slurry system[J]. Petrochemical Technology, 2016, 45(8):988-993. [15] 邹双,熊钰丹,张天意,等. 盐膏层固井用降失水剂的研究与应用[J]. 钻井液与完井液,2021,38(6):765-770.ZOU Shuang, XIONG Yudan, ZHANG Tianyi, et al. Study and application of fluid loss additive used in cement slurries for cementing salt-gypsum stratum[J]. Drilling Fluid & Completion Fluid, 2021, 38(6):765-770. [16] SUN F, PANG X Y, KAWASHIMA S, et al. Effect of tartaric acid on the hydration of oil well cement at elevated temperatures between 60 ℃ and 89 ℃[J]. Cement and Concrete Research, 2022, 161:106952. doi: 10.1016/j.cemconres.2022.106952 [17] 夏修建,李鹏鹏,于永金,等. 侧链对油井水泥降失水剂性能的影响及机理研究[J]. 钻井液与完井液,2022,39(6):748-753.XIA Xiujian, LI Pengpeng, YU Yongjin, et al. Effects of polymer sidechains on performance of oil well cement filter loss reducers and studies on mechanisms of the effects[J]. Drilling Fluid & Completion Fluid, 2022, 39(6):748-753. -
点击查看大图
图(7) / 表(3)
计量
- 文章访问数: 239
- HTML全文浏览量: 95
- PDF下载量: 26
- 被引次数: 0
