基于疏水改性的纳米二氧化硅页岩稳定剂的制备及性能评价

摘要/Abstract

摘要： 钻井过程中泥页岩井壁失稳问题频发，严重制约了油气田的钻探开发进程，亟需研制新型纳米页岩稳定剂。将疏水基团接枝到纳米二氧化硅表面制备了新型页岩稳定剂(SNL)，采用红外光谱、粒度分布测试表征了其微观结构，利用泥页岩膨胀、分散及压力穿透测试评价了其页岩稳定效果，并探讨了新型页岩稳定剂的作用机理。结果表明，新型页岩稳定剂能有效抑制黏土的水化膨胀和分散，其水化抑制效果优于常用水化抑制剂。新型页岩稳定剂通过在泥页岩裂隙中填充、弱化黏土的静电斥力，包被黏土粒子，并将其表面变得疏水，来弱化泥页岩水化作用，改善泥页岩井壁稳定性。SNL在JYHF-2井进行了现场应用,相比邻井,该井的井下复杂率明显降低,现场钻井作业周期显著缩短。SNL的现场应用结果为开发新一代基于润湿性改善的纳米页岩稳定剂提供了思路。

关键词: 疏水, 二氧化硅, 钻井液, 水化, 页岩稳定剂

Abstract: In the process of drilling,shale instability occurs frequently, which seriously restricts the drilling and development process of oil and gas fields. There is an urgent need to develop a new type of nano shale stabilizer, which was prepared by grafting hydrophobic groups onto the surface of nano-silica. Its microstructure was characterized by infrared spectrum and particle size distribution test. Its shale stabilization effect was evaluated by shale swelling, dispersion and pressure penetration test, and the mechanism of SNL was discussed. The results show that the new shale stabilizer can effectively inhibit the clay hydration expansion and dispersion, and its hydration inhibition effect is better than that of common hydration inhibitors. The new shale stabilizer weakens the shale hydration by filling and weakening the electrostatic repulsion of clay in shale fractures, coating clay particles, and making its surface hydrophobic. SNL has been applied in JiaoYe HF-2 well. Compared with the adjacent well, the downhole complexity of this well is significantly reduced and the on-site drilling operation cycle is significantly shortened. The field application results of SNL provide ideas for developing a new generation of nano shale
stabilizer based on wettability improvement.

Key words: hydrophobic, silica, drilling fluid, hydration, shale stabilizer

钟成兵, 罗霄 . 基于疏水改性的纳米二氧化硅页岩稳定剂的制备及性能评价[J]. 钻采工艺, 2023, 46(1): 153-158.

ZHONG Chengbing , LUO Xiao . Preparation and Performance Evaluation of Nano Silica Shale Stabilizer Based on Hydrophobic Modification[J]. Drilling & Production Technology, 2023, 46(1): 153-158.

参考文献

[1]林海,邓金根,谢涛,等. 渤海油田渤中区域中深部泥页岩地层井壁稳定性[ J]. 科学技术与工程,2021,21( 11): 4409-4417.
LIN Hai,DENG Jingen,XIE Tao,et al. Wellbore instability of shale formation in Bozhong area of Bohai oil field[ J]. Science Technology and Engineering, 2021, 21 ( 11 ): 4409-4417.
[2]吴雄军,赵琳,林永学,等. 页岩水平井环保型多硅基水基钻井液技术[J]. 石油与天然气化工,2021,50(2):72-76.
WU Xiongjun, ZHAO Lin, LIN Yongxue, et al. Environmental friendly water-based drilling fluid using multiple silicon treatment agents for horizontal wells in shale reservoir [J]. Chemical Engineering of Oil & Gas, 2021, 50 ( 2): 72-76.
[3]于雷,张敬辉,李公让,等. 低活度强抑制封堵钻井液研究与应用[J]. 石油钻探技术,2018,46(1):44-48. YU Lei,ZHANG Jinghui,LI Gongrang,et al.
Research and application of plugging drilling fluid with low-activity and high inhibition properties [ J ]. Petroleum Drilling Techniques,2018,46(1):44-48.
[4]舒小波,孟英峰,李皋. 基于仿生技术的泥页岩井壁稳定处理液研究[J]. 石油钻探技术,2017,45(3):15-20.
SHU Xiaobo,MENG Yingfeng,LI Gao. Bionic techniquebased treatment fluid for wellbore stability in drilling through shale formations [ J ]. Petroleum Drilling Techniques,2017,45(3):15-20.
[5]丁乙,梁利喜,刘向君,等. 温度和化学耦合作用对泥页岩地层井壁稳定性的影响[ J]. 断块油气田,2016,23( 5): 663-667.
DING Yi,LIANG Lixi,LIU Xiangjun, et al. Influence of temperature and chemical on wellbore stability in clay shale formation[J]. Fault-Block Oil & Gas Field,2016,23( 5): 663-667.
[6]于军泉,安玉秀,马京缘,等. 高性能页岩封堵剂的合成及其性能[J]. 石油化工,2022,51(7):806-814.
YU Junquan,AN Yuxiu,MA Jingyuan,et al. Synthesis and performance of high-performance shale plugging agent[J]. Petrochemical Technology,2022,51(7):806-814.
[7]王波,孙金声,申峰,等. 陆相页岩气水平井段井壁失稳机理及水基钻井液对策[J]. 天然气工业,2020,40 ( 4): 104-111.
WANG Bo,SUN Jinsheng,SHEN Feng,et al. Mechanism of wellbore instability in continental shale gas horizontal sections and its water-based drilling fluid countermeasures [J]. Natural Gas Industry,2020,40(4):104-111.
[8]张书宁. 油田酸化用铁离子稳定剂 FW-1 的制备与评价 [J]. 钻采工艺,2021,44(5):101-105.
ZHANG Shuning. Preparation and evaluation of iron ion stabilizer FW-1 for oilfield acidification[J]. Drilling & Production Technology,2021,44(5):101-105.
[9]王伟吉. 页岩地层核壳结构纳米封堵剂研制及应用[ J]. 科学技术与工程,2020,20(9):3585-3590.
WANG Weiji. Development and application of nano plugging agent with core-shell structure for shale strata[J]. Science Technology and Engineering, 2020, 20 ( 9 ): 3585-3590.
[10]张桓,罗春芝,张世录,等. 抗温抗污染油基钻井液乳化剂的研制及在阳 101 区块的应用[ J]. 钻采工艺,2022,45 (6):146-151.
ZHANG Huan,LUO Chunzhi,ZHANG Shilu,et al. Development of anti-temperature and anti-pollution emulsifier for oil-based drilling fluid and its application in Yang101 block [ J ]. Drilling & Production Technology, 2022, 45 ( 6 ): 146-151.
[11]李方. 改变井壁岩石和泥饼亲水通道的钻井液研究[D]. 成都:西南石油大学,2017. LI Fang. Study on changing with hydrophilic channel of wellbore rock and mud cake drilling fluid[ D]. Chengdu: Southwest Petroleum University,2017.
[12]杜蕊. 阳离子的疏水型页岩抑制剂的合成及评价[D]. 成都:西南石油大学,2017. DU Rui. Synthesis and evaluation of cationic hydrophobic shale inhibitor[D]. Chengdu:Southwest Petroleum University,2017.
[13]LV Kaihe,HUANG Xianbin,LI He,et al. Modified biosurfactant cationic alkyl polyglycoside as an effective additive for inhibition of highly reactive shale[ J]. Energy & Fuels, 2020,34(2):1680-1687.
[14] 钟汉毅,邱正松,黄维安,等. PAMAM 树枝状聚合物抑制泥页岩水化膨胀和分散特性[J]. 中南大学学报(自然科学版),2016,47(12):4132-4140.
ZHONG Hanyi, QIU Zhengsong, HUANG Weian, et al. Properties of PAMAM dendrimers in inhibiting shale hydration and dispersion[J]. Journal of Central South University (Science and Technology),2016,47(12):4132-4140.
[15]冯杰,李颖颖,罗亚飞,等. 分子模拟有机胺页岩抑制剂碳链长度对抑制性能的影响[J]. 科学技术与工程,2019,19 (16):95-100.
FENG Jie,LI Yingying,LUO Yafei,et al. Molecular simulation for the effect of organic amine shale inhibitor's carbon chain length on its inhibition performance[ J]. Science Technology and Engineering,2019,19(16):9