Kinetic model of plug removal reaction based on a synergy between hydraulic pulse wave and multi-hydracid acidification

doi:10.7623/syxb201604009

Acta Petrolei Sinica ›› 2016, Vol. 37 ›› Issue (4): 499-507.DOI: 10.7623/syxb201604009

• Oil Field Development • Previous Articles Next Articles

Kinetic model of plug removal reaction based on a synergy between hydraulic pulse wave and multi-hydracid acidification

He Yanlong¹, Pu Chunsheng¹, Dong Qiaoling², Jing Cheng¹, Gu Xiaoyu¹, Han Chunchun³, Ji Chao⁴, Liu Hongzhi¹, Li Xiao¹

1. School of Petroleum Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
2. No. 3 Oil Production Plant, Daqing Oilfield Limited Company, Heilongjiang Daqing 163712, China;
3. The 3rd Oil Production Plant, PetroChina Qinghai Oilfield Company, Qinghai Haixi 816400, China;
4. Gudong Oil Production Plant, Sinopec Shengli Oilfield Company, Shandong Dongying 257051, China

Received:2015-10-13 Revised:2016-02-07 Online:2016-04-25 Published:2016-05-06

水力脉冲波协同多氢酸酸化解堵反应动力学模型

何延龙¹, 蒲春生¹, 董巧玲², 景成¹, 谷潇雨¹, 韩春春³, 纪超⁴, 刘洪志¹, 李晓¹

1. 中国石油大学石油工程学院山东青岛 266580;
2. 大庆油田有限责任公司第三采油厂黑龙江大庆 163712;
3. 中国石油青海油田公司采油三厂青海海西 816400;
4. 中国石油化工股份有限公司胜利油田分公司孤东采油厂山东东营 257051

通讯作者: 蒲春生,男,1959年3月生,1982年毕业于西安交通大学计算数学专业,1992年获西南石油学院博士学位,现为中国石油大学(华东)教授、博士生导师,主要从事复杂油气藏物理-化学强化开采技术方面的研究。Email:chshpu@163.com
作者简介:何延龙,男,1987年3月生,2009年获兰州理工大学学士学位,现为中国石油大学(华东)油气田开发工程专业博士研究生,主要从事复杂油气藏物理-化学强化开采技术方面的研究。Email:stpnet@126.com
基金资助:
国家重大科技专项(2009ZX05009)和国家自然科学基金项目(No.51104173)资助。

Abstract

Abstract:

The synergetic technology between hydraulic pulse wave and multi-hydracid acidification shows a highly-efficient plug removal effect against reservoir plugging in the vicinity of high-pressure water and steam injection wells. However, currently there is seldom research on the simulation theory and kinetics of such technology, and a certain blindness exists in the field process parameter design. The kinetic model of a synergy between hydraulic pulse wave and multi-hydracid acidification reaction was established based on the acidic rock reaction model of multi-hydracid active acid components as well as the transmission dynamics of hydraulic pulse wave; a study was conducted on the variation laws of porosity, permeability, acid and mineral concentration over time and distance. Meanwhile, the parameter sensitivity of a synergy between hydraulic pulse wave and multi-hydracid acidification for plug removal was analyzed. Finally, field application analysis was also carried out. The results show that the synergy effect further enhances the acidizing plug-removal effect of reservoirs and obviously improves the distribution of acid flow rate, acid and mineral concentration. In case of high amplitude and frequency, the plug removal effect at adjacent positions is directly influenced by radial difference in acid flow rate. Aiming at different types of sandstone reservoirs, the plug removal parameters based on a synergy between hydraulic pulse wave and multi-hydracid acidification are designed to successfully carry out field tests in 11 wells. The average reduction of water and steam injection pressure is 6.3 MPa and 3.5 MPa respectively, leading to significant effects on plug removal, pressure reduction and injection stimulation.

Key words: hydraulic pulse wave, multi-hydracid, plug removal, kinetic model, acidic rock reaction

摘要：

水力脉冲波协同多氢酸酸化技术对于高压注水、注汽井近井区域的储层堵塞具有高效的解堵效果。但目前针对该项技术的模拟理论及动力学研究较少,现场工艺参数设计存在一定的盲目性。基于多氢酸活性酸组分的酸岩反应模型,以水力脉冲波传播动力学为基础,构建了水力脉冲波协同多氢酸酸化反应动力学模型;研究了孔隙度、渗透率、酸液及矿物浓度随时间和距离的变化规律,分析了水力脉冲波协同多氢酸酸化解堵的参数敏感性,并进行了矿场应用分析。研究表明:协同作用进一步提高了储层的酸化解堵效果,明显改善了酸液流速、酸液及矿物浓度的分布;振幅、频率较高时,酸液流速的径向差异直接影响相邻位置的解堵效果。针对不同类型的砂岩油藏设计了水力脉冲波协同多氢酸酸化解堵参数,并成功开展11井次矿场试验,注水压力平均下降6.3 MPa,注汽压力平均下降3.5 MPa,起到了显著的解堵降压增注效果。

关键词: 水力脉冲波, 多氢酸, 解堵, 动力学模型, 酸岩反应

CLC Number:

TE357.2

He Yanlong, Pu Chunsheng, Dong Qiaoling, Jing Cheng, Gu Xiaoyu, Han Chunchun, Ji Chao, Liu Hongzhi, Li Xiao. Kinetic model of plug removal reaction based on a synergy between hydraulic pulse wave and multi-hydracid acidification[J]. Acta Petrolei Sinica, 2016, 37(4): 499-507.

何延龙, 蒲春生, 董巧玲, 景成, 谷潇雨, 韩春春, 纪超, 刘洪志, 李晓. 水力脉冲波协同多氢酸酸化解堵反应动力学模型[J]. 石油学报, 2016, 37(4): 499-507.

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Kinetic model of plug removal reaction based on a synergy between hydraulic pulse wave and multi-hydracid acidification

水力脉冲波协同多氢酸酸化解堵反应动力学模型

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