Laboratory Study on Ultra-high Temperature Temporary Plugging Agent SMHHP
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摘要: 为满足超高温储层暂堵要求,开发了一种屏蔽暂堵剂SMHHP。该屏蔽暂堵剂由颗粒材料、纤维材料、弹性材料和纳米材料组成,通过利用理想充填理论确定粒径级配,优选了颗粒材料;引入高酸溶抗高温纤维,起到相互拉筋的作用,提高封堵层的稳定性;利用高温弹性材料,弥补由于材料加工工艺导致的颗粒不规则造成的级配不合适,提高粒径级配效果;利用纳米材料,对架桥填充后留下的小孔隙进行精细封堵,提高封堵层的致密性。将上述材料通过合理配比,开发出了适用于超高温储层的屏蔽暂堵剂SMHHP。该暂堵剂具有对钻井液流变性影响小、抗温性高、封堵性强、暂堵效果好、酸溶率高的特点,抗温可达200℃,0.2 mm裂缝承压大于7 MPa,砂粒为0.28~0.90 mm的砂床侵入深度小于3 cm,岩心渗透率恢复值达到93.9%以上,酸溶率大于82.1%,可在超高温储层段使用,起到保护油气层的作用。Abstract: A temporary plugging agent SMHHP has been developed to satisfy the needs of temporary plugging in ultra-high temperature reservoirs. SMHHP is composed of particle material, fiber material, elastic material and nanophase material which are in reasonable ratios. The sizing and selection of particles was based on ideal packing theory. A high temperature highly acid soluble fiber was introduced into SMHHP to improve the stability of the plugged formations. Considering the poor adaptability of particle sizes to the sizes of pores to be plugged because of the irregularity of particles during processing, a high temperature elastic material was added into SMHHP. Tiny pores formed in bridging can be further precisely packed with nanophase material, thereby improvingthe compactability of plugged formations. SMHHP only slightly affect mud rheology, and has high temperature resistance, strong sealing ability, goodtemporary plugging effect and high acid solubility. SMHHP functioned normally at 200℃. Test performed with SMHHP slurry on 0.2 mm fractures showed that pressure bearing capacity of more than 7 MPa can be achieved. Filtration depth of SMHHP slurry on sand bed with 0.28-0.90 mm sand particles was less than 3 cm. Percent permeability recovery of cores contaminated with SMHHP slurry was greater than 93.9%. Acid solubility of SMHHP was greater than 82.1%. SMHHP can be used in reservoirs of ultrahigh temperatures, protecting the reservoirs from being damaged.
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[1] 王盛鹏,唐邦忠,崔周旗,等. 一种新型油溶性暂堵剂及应用[J]. 钻井液与完井液,2015,32(1):87-89.WANG Shengpeng,TANG Bangzhong,CUI Zhouqi, et al. A new oil soluble temporary plugging agent[J]. Drilling Fluid & Completion Fluid,2015,32(1):87-89. [2] 王小月,李洪俊,苏秀纯,等.DCZ油溶性暂堵剂的研究与应用[J]. 钻井液与完井液,2004,21(1):27-29.WANG Xiaoyue,LI Hongjun,SU Xiuchun, et al. Oil soluble temporary plugging agent DGZ and its application[J]. Drilling Fluid & Completion Fluid,2004, 21(1):27-29. [3] 郭丽梅,薛锦华,陈曦. 新型屏蔽暂堵剂ZDJ室内性能评价[J]. 钻井液与完井液,2016,33(1):37-41.GUO Limei,XUE Jinhua,CHEN Xi.Laboratory evaluation of a new temporary plugging agent ZDJ[J]. Drilling Fluid & Completion Fluid,2016,33(1):37-41. [4] 王永恒,康毅力,兰林,等. 集成超低渗透与屏蔽暂堵优势的新型钻井完井液[J]. 钻井液与完井液,2008, 25(6):14-16.WANG Yongheng,KANG Yili,LAN Lin,et al.A drill-in fluid with ultra-low filtration rate and temporary plugging ability[J].Drilling Fluid & Completion Fluid, 2008,25(6):14-16. [5] 赖南君,陈科,马宏伟,等. 水溶性压裂暂堵剂的性能评价[J]. 油田化学,2014,31(2):215-218.LAI NanJun,CHEN Ke,MA Hongwei, et al. Performance evaluation of water soluble temporary plugging agent for fracturing[J].Oilfield Chemistry, 2014,31(2):215-218. [6] 赵修太,信艳永,姚佳,等. 高温低伤害暂堵剂HTZD室内研究与评价[J]. 钻采工艺,2010,33(1):80-81.ZHAO Xiutai, XIN Yanyong,YAO Jia,et al. Research and evaluation of high temperature low damage temporary plugging agent HTZD[J].Drilling & Production Technology,2010,33(1):80-81. [7] 刘大伟,康毅力,雷鸣,等. 保护碳酸盐岩储层屏蔽暂堵技术研究进展[J]. 钻井液与完井液,2008,25(5):57-60.LIU Dawei,KANG Yili, LEI Ming, et al. Research progresses in temporary plugging technology for carbonate reservoir protection[J]. Drilling Fluid & Completion Fluid,2008,25(5):57-60. [8] 任占春,张光焰,韩文峰,等.HT-10高温屏蔽暂堵剂研制与应用[J]. 油田化学,2002,19(2):109-111.REN Zhanchun, ZHANG Guangyan,HAN Wenfeng, et al. Preparation and uses of high temperature temporarily plugging shielding fluid HT-10[J].Oilfield Chemistry, 2002,19(2):109-111. [9] 刘鑫,赵楠,杨宪民,等. 强吸水暂堵完井液在呼图壁储气库完井中的应用[J]. 石油钻探技术,2013,41(6):72-77.LIU Xin,ZHAO Nan,YANG Xianmin, et al. Application of strong water absorption temporary plugging technique in well completion of Htubi gas storage[J].Petroleum Drilling Techniques,2013,41(6):72-77. [10] 张金波,鄢捷年,赵海燕. 优选暂堵剂粒度分布的新方法[J]. 钻井液与完井液,2004,21(5):4-7.ZHANG Jinbo,YAN Jienian,ZHAO Haiyan. Optimization of bridging particle size distribution of drilling fluid for formation protection[J]. Drilling Fluid & Completion Fluid,2004,21(5):4-7. [11] 王利国,鄢捷年,冯文强. 理想充填暂堵型钻井完井液的设计及室内评价[J]. 中国石油大学学报(自然科学版),2007,31(3):72-76. WANG Liguo, YAN Jienian, FENG Wenqiang. Design and lab evaluation of ideal packing bridging drilling and completion fluids[J].Joural of China University of Petroleum,2007,31(3):72-76. [12] 赵巍,林勇,李波,等. 诱导性裂缝适应性防漏堵漏钻井液技术[J]. 钻井液与完井液,2012,29(4):12-15.ZHAO Wei,LIN Yong,LI Bo, et al.Research on adaptive mud loss control and protection technology used for induced fractures[J].Drilling Fluid & Completion Fluid,2012,29(4):12-15.
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