Solidification of Slag Mud Cake that Improves Cementation Quality of the Second Bonding Interface
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摘要: 难以固化的滤饼直接导致固井第二界面胶结质量差。为提高第二界面胶结质量,基于矿渣受碱激发特性,提出矿渣钻井液滤饼可固化技术,并进行了研究,考察了矿渣钻井液滤饼对第二界面胶结性能的影响;对该技术配套冲洗液进行研究;通过XRD测试分析滤饼物相组成及作用机理。结果表明,矿渣钻井液滤饼可固化技术有助于提高第二界面胶结强度,改善第二界面胶结形貌;配套冲洗液显著提高上述技术效果;矿渣钻井液滤饼具有潜在固化活性,经冲洗液渗透、预激活,并与水泥浆成分交换,共同水化,生成C-S-H凝胶,包覆、连接固相颗粒,填充结构孔隙,实现滤饼、水泥环整体固化,第二界面胶结强度提高。研究表明,矿渣钻井液滤饼可固化技术与配套冲洗液技术有助于提高第二界面胶结质量,该研究对无机矿物凝胶材料在钻井液中的应用,特别是工业废料的环境保护再利用,具有科学的理论指导意义。Abstract: Poor solidification of filter cake results in poor cementation quality of the second bonding interface (between filter cake and cement sheath). Technology for the solidification of slag mud cake is presented to try to improve the cementation quality of the second bonding interface. This technology is based on the characteristics of slag, which can be activated by alkali. Several studies have been conducted, including:effects of slag mud cake on the cementation performance of the second bonding interface; flushing fluid for this technology; and phase composition and functioning mechanism of filter cake inspected using XRD. The studies show that the slag mud cake solidification technology helps improve the cementation quality and the cementation morphology of the second bonding interface. The flushing fluid further improves the cementation quality. Slag mud cake, having the potential of being solidified, after penetration and pre-activation by the flushing fluid, exchanges matters with cement slurry. Both the slag mud cake and the cement during this course hydrate simultaneously, producing C-S-H gels which encapsulate and link solid particles and fill the spaces among cement particles, making the filter cake and cement sheath solidify as a whole. It has been proved that this technology, when used in combination with the designed flushing fluid, is beneficial to the improvement of the cementation quality of the second bonding interface. These studies are of importance to the use of inorganic gel materials in drilling fluids, especially the recycling of industrial wastes.
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孙剑,崔茂荣,马勇,等. 水平井钻井完井液滤饼清除技术[J]. 钻井液与完井液,2009,29(5):73-75. Sun Jian,Cui Maorong,Ma Yong,et al.Mud cake removal in horizontal wells[J].Drilling Fluid & Completion Fluid,2009,29(5):73-75. 张顺平. 可固化钻井液的滤饼固化技术研究[D]. 成都:西南石油大学,2013. Zhang Shunping.Mud cake solidify technology of solidifiable drilling fluid[D].Chengdu:Southwest Petroleum University,2013. 刘威. 可固化工作液二界面胶结质量评价方法的研究[D]. 成都:西南石油大学,2013. Liu Wei. Research on evaluation method of the second interface cementing quality of solidifiable working fluid[D].Chengdu:Southwest Petroleum University, 2013. 彭志刚,何育荣,冯茜. 矿渣MTC固化泥饼能力及其行为原因分析[J]. 钻井液与完井液,2005,22(5):20-23. Peng Zhigang,He Yurong,Feng Qian,et al. Analysis on capability and behavior reason of slag mtc solidifying cake[J].Drilling Fluid & Completion Fluid,2005,22(5):20-23. 曾欣,李早元,李明,等. 影响井壁泥饼固化质量的因素分析[J]. 钻井液与完井液,2012,29(5):61-64. Zeng Xin,Li Zaoyuan,Li Ming,et al.Affecting factors analysis on mud cake cementing quality[J].Drilling Fluid & Completion Fluid,2012,29(5):61-64. 赵启阳,邓慧,王伟,等. 一种可固化堵漏工作液的室内研究[J]. 钻井液与完井液,2013,30(1):41-44. Zhao Qiyang,Deng Hui,Wang Wei,et al.Laboratory study on curing lost circulation control fluid[J].Drilling Fluid & Completion Fluid,2013,30(1):41-44. 尚建丽,刘琳. 矿渣-粉煤灰地质聚合物制备及力学性能研究[J]. 硅酸盐通报,2011,30(3):741-744. Shang Jianli,Liu Lin.Study on preparation and mechanical properties of slag and fly ash based geopolymeric[J].Bulletin of the Chinese Ceramic Society, 2011,30(3):741-744. 聂轶苗, 马鸿文, 苏玉柱. 矿物聚合材料固化过程中的聚合反应机理研究[J]. 现代地质,2006,20(2):340-346. Nie Yimiao,Ma Hongwen,Su Yuzhu.Mechanism of polymerization during the solidification of fly ash-based geopolymers[J].Geoscience,2006,20(2):340-346. 张雄,鲁辉,张永娟,等. 矿渣活性激发方式的研究进展[J]. 西安建筑科技大学学报(自然科学版), 2011,43(3):379-384. Zhang Xiong,Lu Hui,Zhang Yongjuan,et al. Research progress of slag activation[J].Xi'an Univ.of Arch.&Tech.(Natural Science Edition),2011,43(3):379-384. 马勇,崔茂荣,郭小阳. 钻井液造壁性对固井质量的影响[J]. 钻井液与完井液,2007,24(2):37-38,47. Ma Yong,Cui Maorong,Guo Xiaoyang.Effect of wallbuilding of drilling muds on the cement job quality[J]. Drilling Fluid & Completion Fluid,2007,24(2):37-38,47. 程荣超, 步玉环, 王瑞和. 高炉矿渣改善固井水泥界面胶结性能研究[J]. 天然气工业,2007,27(2):63-66. Cheng Rong chao, Bu Yu huan,Wang Rui he. Experimental study on blast furnace slag(BFS) to improve cement bonding quality of cementing operation[J].Natural Gas Industry,2007,27(2):63-66. 杨长辉, 宋洋, 陈科, 等. 表面活性剂在碱矿渣水泥系统中的吸附特征研究[J]. 混凝土,2009(11):42-45. Yang Changhui,Song Yang,Chen Ke,et al. Adsorption characteristics of surfactant in alkali-activated slag cement systems[J].Concrete,2009(11):42-45. Regourd M.Structure and behaviour of slag portland cement hydrates[C].7th International Congress on the Chemistry of Cement,Paris, France,1, III-2/11-26.
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