针对深层产水气井温度高、矿化度高、含高浓度H2S气体及凝析油的特点,研制了纳米粒子泡排剂,评价了其性能,并进行了现场试验。将耐高温的阴离子表面活性剂、耐高矿化度及H2S的两性离子表面活性剂及耐凝析油的氟碳表面活性剂进行复配制成液相泡排剂,再加入使用硅烷偶联剂改性的纳米二氧化硅球作为固态稳泡剂,制备出纳米粒子泡排剂。通过室内实验研究了泡排剂的性能,结果表明：泡排剂抗温可达150 ℃,抗矿化度可达250 g/L,抗H2S浓度可达0.04%,抗凝析油含量可达30%,起泡性、稳泡性优良。光学显微镜观察、Zeta电位表征结果说明,纳米粒子增强液相泡排剂性能的机理在于纳米粒子吸附在气液界面形成固态的粒子化膜,改性纳米二氧化硅球浓度约为0.002%时具有最佳稳泡效果。现场试验结果表明：泡排剂性能稳定,满足现场施工要求,可显著提高泡沫排水采气有效率并降低成本。图9参11
武俊文
,
雷群
,
熊春明
,
曹光强
,
张建军
,
李隽
,
方进
,
谭建
,
艾天敬
,
李楠
,
贾敏
. 适用于深层产水气井的纳米粒子泡排剂[J]. 石油勘探与开发, 2016
, 43(4)
: 636
-640
.
DOI: 10.11698/PED.2016.04.17
To solve the problem of unloading liquid of deep gas well with high gas temperature and salinity, high concentrations of H2S gas and condensate oil, a nanoparticle foam unloading agent was developed and evaluated, and the field test was carried out. The liquid phase foam unloading agent was prepared by blending high temperature resistant anionic surfactant, high salinity and H2S resistant zwitterionic surfactant and the condensate oil resistant fluorocarbon surfactant. The nanoparticle foam unloading agent was developed by introducing silane coupling agent modified nano silica spheres into the liquid phase foam unloading agent as the solid foam stabilizer. The property of nanoparticle foam unloading agent was studied through lab experiment, and the results show that: the agent has temperature resistance as high as 150 ℃, salinity resistance up to 250 g/L, H2S resistance up to 0.04%, condensate oil resistance up to 30%, which proves high foaming ability and foam stabilizing ability. The optical microscope and zeta potential results show that: the mechanism of enhancing the property of liquid phase foam unloading agent by nanoparticles lies in the fact that the nanoparticles can adsorb onto the gas-water interface to form a solid particle film, and it has the best foam stabilizing effect at the modified nano-silica sphere concentration of about 0.002%. The field test results show that: the agent has steady performance, meets the site construction requirements, and can improve the water drainage - gas recovery efficiency in gas well and reduce the cost.
[1] 李农, 赵立强, 缪海燕, 等. 深井耐高温泡排剂研制及实验评价方法[J]. 开发工程, 2012, 32(12): 55-57.
LI Nong, ZHAO Liqiang, MIAO Haiyan, et al. Research & development of heat-resistant foaming agent for deep wells and its experimental evaluation methods[J]. Natural Gas Industry, 2012, 32(12): 55-57.
[2] PUGH R J. Foaming, foam films, antifoaming and defoaming[J]. Advances in Colloid & Interface Science, 1996, 64(95): 67-142.
[3] WEAIRE D, DRENCKHAN W. Structure and dynamics of confined foams: A review of recent progress[J]. Advances in Colloid and Interface Science, 2008, 137(1): 20-26.
[4] ENGELS T, RYBINSKI W Y, SCHMIEDEL P. Structure and dynamics of surfactant-based foams[J]. Structure, Dynamics and Properties of Disperse Colloidal Systems Progress in Colloid & Polymer Science, 1998, 111: 117-126.
[5] 王冬梅, 韩大匡, 许关利, 等. 部分水解聚丙烯酰胺对 α -烯烃磺酸钠泡沫性能的影响[J]. 石油勘探与开发, 2008, 35(3): 335-338.
WANG Dongmei, HAN Dakuang, XU Guanli, et al. Influence of hydrolyzed polyacrylamide on the foam capability of α -Olefin Sulfonate surfactant[J]. Petroleum Exploration and Development, 2008, 35(3): 335-338.
[6] PITKETHLY M J. Nanomaterials: The driving force[J]. Matter Today, 2004, 7(12): 20-29.
[7] DICKSON J L, BINKS B P. Stabilization of carbon dioxide-in-water emulsions with silica nanoparticles[J]. Langmuir, 2004, 20(19): 7976-7983.
[8] ARNAUD S J. Physical chemistry in foam drainage and coarsening[J]. Soft Matter, 2005, 2(10): 836-849.
[9] JOYE J L, HIRASAKI G J, MILLER C A. Asymmetric drainage in foam films[J]. Langmuir, 1994, 10(9): 3174-3179.
[10] IVANOV I B. Effect of surface mobility on the dynamic behavior of thin liquid films[J]. Pure and Applied Chemistry, 1980, 52(5): 1241-1262.
[11] XU G, ZHANG J, SONG G. Effect of complexation on the zeta potential of silica powder[J]. Powder Technology, 2003, 134(3): 218-222.
