Preparation of Fracturing Fluids with Hot Water
-
摘要: 苏北盆地阜二段储层原油具有高凝固点、不含沥青质和低含硫的特点,常温水配制压裂液易对储层造成冷伤害。笔者对压裂液冷伤害控制进行了优化,分析了瓜胶在高温水中的分散机理,并用高温水配制了压裂液。考察了高温水对瓜胶压裂液表观黏度、溶胀时间、剪切黏度、悬砂时间、破胶液黏度和岩心伤害等因素的影响,形成了70℃高温水配制热压裂液技术。现场应用表明,高温水配制压裂液技术有效地降低了储层冷伤害,提高了压裂效果。Abstract: Reservoirs in the Fuer member in Subei basin produce oils with high pour point, no asphaltene and low sulfur. Fracturing fluids prepared with water of normal temperature render "cold" damage to the producibility of the reservoirs. By optimizing the method of preventing "cold" damage from fracturing operation and analyzing the mechanisms of dispersion of guar gum in hot water, a fracturing fluid was prepared with hot water. Studies were performed on the effects of hot water on the properties of guar gum fracturing fluid, such as apparent viscosity, time for swelling, shear viscosity, time of sand suspending, viscosity of fluid with gel broken as well as core damage etc., and a technology of preparing fracturing fluid with water of 70℃ was established. Field application showed that the fracturing fluid prepared with hot water effectively prevented "cold" damage to the reservoirs. Production rate of oil after fracturing job was 6.8 m3/d, 2 times of the production rate of the reservoirs fractured with fracturing fluids prepared with water of normal temperature, demonstrating that the hot water fracturing fluid has presented good potential in enhancing oil recovery.
-
[1] 田乃林, 冯积累. 早期注冷水开发对高含蜡高凝固点油藏的冷伤害[J]. 中国石油大学学报(自然科学版), 1997, 21(1):42-45. TIAN Nailin, FENG Jilei.Cooling damage of reservoir with high wax content and high pour point crude in early cooling injection oilfield[J].Journal of China University of Petroleum(Edition of Natural Science), 1997, 21(1):42-45. [2] 姚凯, 姜汉桥, 党龙梅, 等. 高凝油油藏冷伤害机制[J]. 中国石油大学学报(自然科学版), 2009, 33(3):95-98. YAO Kai, JIANG Hanqiao, DANG Longmei, et al. Mechanism of cooling damage to high pour-point oil reservoir[J].Journal of China University of Petroleum (Edition of Natural Science), 2009, 33(3):95-98. [3] 蔡长宇, 严玉中, 刘杰. 热压裂液技术研究及应用[J]. 钻井液与完井液, 2002, 19(3):21-23.CAI Changyu, YAN Yuzhong, LIU Jie.Study on hot fracturing fluid technology and its application[J].Drilling Fluid & Completion Fluid, 2002, 19(3):21-23. [4] 李军, 王潜, 齐海鹰, 等.曹台潜山高凝油大型热压裂配液温度的估算[J].石油矿场机械, 2008, 37(11):82-84.LI Jun, WANG Qian, QI Haiying, et al.Estimate of prepared fluid temperature for large-scale hot fracturing of high pour-point oil in Caotai Qianshan oil rgeion[J]. Oil Field Equipments, 2008, 37(11):82-84. [5] 沈德梅, 李万春, 张鑫, 等. 彰武油田注水冷伤害及注热水矿场试验研究[J]. 石油地质与工程, 2016, 30(4):110-112.SHEN Demei, LI Wanchun, ZHANG Xin, et al.Study on cold damage of water injection and pilot testing of hot water injection iin Zhangwu oilfield[J].Petroleum Geology and Engineering, 2016, 30(4):110-112. [6] 廖长霖, 吴向红, 王喻雄, 等. 南苏丹高凝油油藏冷伤害机理研究[J]. 西安石油大学学报(自然科学版), 2016, 31(4):64-68. LIAO Changlin, WU Xianghong, WANG Yuxiong, et al.Study on reservoir cold damage mechanism of high pour poinol reservoir in southern Sultan[J].Journal of Xi an Shiyou University(Natural Science Edition), 2016, 31(4):64-68. [7] 刘慧卿, 毕国强. 北小湖油田油层冷伤害实验研究[J]. 中国石油大学学报(自然科学版), 2001, 25(5):45-47. LIU Huiqing, BI Guoqiang.Experimental reserch on for-mation damage by cold water injection in Beixiaohu oil field[J].Journal of China University of Petroleum (NaturalScience Edition), 2011, 25(5):45-47. [8] 姜阿娜. 王家岗油田高凝油储层热污水压裂液技术[J]. 特种油气藏, 2013, 20(6):126-128.JIANG Ena. Application of hot sewage fracturing fluid in high-pour-point oil reservoir of Wangjiagang oilfield[J]. Special Oil & Gas Reservoirs, 2013, 20(6):126-128. [9] 钟安海. 热污水压裂液技术研究及应用[J], 石油化工应用, 2012, 31(1):58-60.ZHONG Anhai. The research and application on the technology of hot sewage f racturing f luid[J]. Petrochemical Industry Application, 2012, 31(1):58-60. [10] 杨帆, 冉启全, 刘立峰, 等. 高温压裂液对低流度型致密油压裂水平井产量影响因素模拟研究-以新疆昌吉J3水平井为例[J]. 西北大学学报(自然科学版), 2019(6):951-960. YANG Fan, RAN Qiquan, LIU Lifeng, et al.The simulation study on the influencing factors of hot fracturing fluid on the production of MFHW in low viscosity tight oil:Taking well J3 as an instance in Changji, Xinjiang[J].Journal of Northwest University (Natural Science Edition), 2019(6):951-960. [11] 张玄奇,尉立岗.冷伤害对气井增产措施的影响研究[J]. 天然气工业, 2004, 24(10):54-55.ZHANG Xuanqi, YU Ligang.Influence of cold damage on gas well stimulation[J].Natural Gas Industry, 2004, 24(10):54-55. [12] 姜建伟, 曹凯, 刘丽娜, 等. 魏岗油田高凝油油藏开发经验[J]. 新疆石油地质, 1999, 20(4):337-339.JIANG Jianwei, CAO Kai, LIU Lina, et a1.The development experience of high pour-oint oil reservoir in Weigang oilfield[J]. Xinjiang Petroleum Geology, 1999, 20(4):337-339. [13] 高明, 宋考平, 吴家文, 等. 高凝油油藏注水开发方式研究[J]. 西南石油大学学报(自然科学版), 2010, 32(2):93-96. GAO Ming, SONG Kaoping, WU Jiawen, et al. Wateflooding strategy for high pour point oil reservoir[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2010, 32(2):93-96. [14] 彭轩, 刘蜀知, 刘福健. 针对高凝油油藏的自生热压裂技术[J]. 特种油气藏, 2003, 10(2):80-81.PENG Xuan, LIU Shuzhi, LIU Fujian.Thermogenic fracturing technique for high pour point oil reservoir[J], Special Oil & Gas Reservoirs, 2003, 10(2):80-81.
点击查看大图
计量
- 文章访问数: 446
- HTML全文浏览量: 131
- PDF下载量: 125
- 被引次数: 0