溶胶-凝胶法制备核壳结构的延迟破胶剂

沈园园; 王在明; 朱宽亮; 吴艳

doi:10.3969/j.issn.1001-5620.2020.01.020

溶胶-凝胶法制备核壳结构的延迟破胶剂

doi: 10.3969/j.issn.1001-5620.2020.01.020

中国石油冀东油田分公司钻采工艺研究院, 河北唐山 063000

基金项目:

国家科技重大专项“渤海湾盆地黄骅坳陷滩海开发技术示范工程”（2011ZX05050）

详细信息

作者简介:
沈园园,1984年生,工程师,现在从事钻井设计及相关科研工作。电话 (0315)8768044,E-mail:zcy_shenyy@petrochina.com.cn

中图分类号: TE257.6
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出版历程
- 收稿日期: 2019-11-05
- 刊出日期: 2020-02-28

A Delayed Gel Breaker with Core-Shell Structure Made with Sol-gel Method

Drilling and Production Research Institute of Petrochina Jidong Oilfield, Tangshan, Hebei, 063000

摘要

摘要: 目前在实施冻胶阀欠平衡完井时，破胶方式主要为钻头机械破胶或钻杆注入破胶剂破胶，缺少能随胶液同时注入井筒的一种延迟破胶剂。在施工完成后，自动进行破胶作业，可节约现有破胶方式下的起下钻作业时间。以正硅酸乙酯（TEOS）为前驱体，采用溶胶-凝胶法制备以二氧化硅为外壳、过硫酸铵为芯材的具有核壳结构的延迟破胶剂。研究TEOS、水和丙酮的用量、反应温度、pH值对包覆效果的影响，结果表明，当TEOS、水、丙酮和过硫酸铵的物质的量的比为3：30：10：1、温度为40℃、pH值为6、反应时间为12 h时，所得的延迟破胶剂能满足120℃下，延迟破胶5 d的欠平衡完井作业要求。采用扫描电镜对延迟破胶剂进行表征，证实二氧化硅包覆层的存在。
- 冻胶阀 /
- 欠平衡完井 /
- 溶胶-凝胶法 /
- 核壳结构 /
- 延迟破胶剂
Abstract: In underbalanced well completion with gel valve, gel breaking has always been performed with drill bit or by injecting gel breaker through the drill pipe. In this gel breaking operation, a delayed gel breaker is not available right now. If gel breaking can be performed automatically after well completion, time spent in tripping the drill pipe can be saved. To realize automatic gel breaking, a delayed gel breaker has been developed through sol-gel method, with tetraethyl orthosilicate (TEOS) as the precursor, SiO₂ as the shell and ammonium persulfate as the core. Study on the effects of concentrations of TEOS, water and acetone, reaction temperature and pH on the coat effect showed that delayed gel breaker that satisfies the need of delaying gel breaking for 5 days at 120 ℃ can be obtained in the following conditions: molar ratio of TEOS, water, acetone and ammonium persulfate of 3：30：10：1, temperature of 40 ℃, pH of 6 and reaction time of 12 h. Characterization of the delayed gel breaker obtained with SEM has proved the existence of the coating SiO₂.
- Gel valve /
- Underbalanced well completion /
- Sol-gel method /
- Core-shell structure /
- Delayed gel breaker

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参考文献(16)

[1]	李晓辉.冻胶段塞密封井筒油气强度研究[J].油田化学, 2015, 32(1):15-17. LI Xiaohui. Oil and gas Intensity of wellbore sealing by gel slug[J]. Oilfield Chemistry, 2015, 32(1):15-17.
[2]	沈园园,王在明,朱宽亮,等.高温冻胶阀技术在南堡23-平2016井中的实践[J].钻采工艺, 2015, 38(5):6-9. SHEN Yuanyuan, WANG Zaiming, ZHU Kuanliang, et al. Application of high temperature gel valve completion technology in well NP23-P2016[J]. Drilling and Production Technology, 2015, 38(5):6-9.
[3]	崔国峰,李春吉,张红玲,等.井下冻胶阀技术在陈古1C井全过程欠平衡钻井中的应用[J].科学技术与工程, 2013, 13(23):6862-6865. CUI Guofeng, LI Chunji, ZHANG Hongling, et al. The application of downhole frozen jelly valve technology in the whole process underbalanced drilling in well Chengu 1C[J]. Science Technology and Engineering, 2013, 13(23):6862-6865.
[4]	王在明,朱宽亮,冯京海,等.高温冻胶阀的研制与现场试验[J].石油钻探技术, 2015, 43(4):78-82. WANG Zaiming, ZHU Kuanliang, FENG Jinghai, et al. Development and field test of high-temperature gel valve[J]. Petroleum Drilling Techniques, 2015, 43(4):78-82.
[5]	陈挺,周勋,党伟,等.MCB系列微胶囊破胶剂的性能[J].钻井液与完井液, 2016, 33(4):114-116. CHEN Ting, ZHOU Xun, DANG Wei, et al. Properties of the MCB series microcapsule gel breaker[J].Drilling Fluid&Completion Fluid, 2016, 33(4):114-116.
[6]	李沁,李根生,伊向艺,等.聚丙烯酰胺类交联酸破胶新方法[J].石油钻探技术, 2014, 42(5):100-103. LI Qin, LI Gensheng, YI Xiangyi, et al. New method of polyacrylamide crosslinked acid gel-breaking[J]. Petroleum Drilling Techniques, 2014, 42(5):100-103.
[7]	李晓丹,李光辉,未九森,等.P (VAc-AM)核壳微球型压裂液破胶剂延迟破胶效果评价[J].钻井液与完井液, 2018, 35(6):122-125. LI Xiaodan, LI Guanghui, WEI Jiusen, et al.Evaluating the effect of delayed gel breaking by P (Vac-AM) coreshell microsphere fracturing fluid gel breaker[J].Drilling Fluid&Completion Fluid, 2018, 35(6):122-125.
[8]	何青,李雷,徐兵威,等.大牛地气田水平井同步破胶技术研究[J].重庆科技学院学报(自然科学版), 2015, 17(2):42-47. HE Qing, LI Lei, XU Bingwei, et al. Research on synchronous gel breaking technology in horizontal well of Daniudi gas field[J]. Journal of Chongqing University of Science and Technology (Natural Sciences Edition), 2015, 17(2):42-47.
[9]	杜宝中,任锰钢,宣雨.微胶囊缓释破胶剂MEB-1的制备及性能[J].油田化学, 2009, 26(2):142-144. DU Baozhong, REN Menggang, XUAN Yu. Preparation and performance properties of microencapsulated slow release gel breaker MEB-1[J]. Oilfield Chemistry, 2009, 26(2):142-144.
[10]	吴金桥,张宁生,吴新民,等.低温浅层油气井压裂液破胶技术研究进展[J].西安石油学院学报(自然科学版), 2003(6):63-66, 92. WU Jinqiao, ZHANG Ningsheng, WU Xinmin, et al. Research progress of fracturing fluid gel-breaking techniques for oil and gas wells in low temperature and shallow reservoirs[J]. Journal of Xi'an Shiyou University (Natural Science Edition), 2003(6):63-66, 92.
[11]	白璞,刘艳娜,孙彦琳,等.核壳结构复合微球研究进展[J].硅酸盐通报, 2013, 32(4):663-667. BAI Pu, LIU Yanna, SUN Yanlin, et al. Research progress of core-shell structure composite microspHeres[J]. Bulletin of the Chinese Ceramic Society, 2013, 32(4):663-667.
[12]	郭艳玲,姜川,周辰,等.多功能复合微球及中空微球的制备与性能[J].天津科技大学学报, 2012, 27(6):47-51. GUO Yanling, JIANG Chuan, ZHOU Chen, et al. Preparation and characterization of multifunctional composite and hollow microspHeres[J]. Journal of Tianjin University of Science&Technology, 2012, 27(6):47-51.
[13]	强伟丽,王祎龙,贺枰,等.细乳液法合成单核核壳结构氧化硅/聚苯乙烯复合微球[J].功能材料, 2007(2):272-275. QIANG Weili, WANG Yilong, HE Ping, et al. Synthesis of silica/polystyrene monocore shell nanocomposite particles via miniemulsion polymerization[J]. Journal of Functional Materials, 2007 (2):272-275.
[14]	崔伟香,王春鹏.压裂用胶囊破胶剂在高压液体中的释放研究[J].油田化学, 2016, 33(4):619-622. CUI Weixiang, WANG Chunpeng. Extrusion and release research of encapsulated gel breaker in fracturing fluid with high pressure[J].Oilfield Chemistry, 2016, 33(4):619-622.
[15]	吴敏,叶艳.用于压裂液的胶囊破胶剂性能评价[J].西南石油学院学报, 2002(6):68-70. WU Min, YIE Yan. Performance evaluation of encapsulated breaker in fracturing fluids[J]. Journal of Southwestern Petroleum Institute Southwest Petrol Inst, 2002 (6):68-70.
[16]	余渝,杨兵,何红梅.一种测定过硫酸铵胶囊破胶剂释放率的新方法[J].钻井液与完井液, 2008(6):56-57. YU Yu, YANG Bing, HE Hongmei. A new method for testing the release rate of capsule ammonium persulpHate gel breaker[J]. Drilling Fluid&Completion Fluid, 2008 (6):56-57.