声震效应作用下页岩气产能模型的建立

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2������ College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China; 3������ No������ 3 Oil Production Plant of PetroChina Changqing Oilfield Branch, Yinchuan 750004, China)
DOI: 10������ 19597 / J������ ISSN������ 1000⁃3754������ 201801047
声震效应作用下页岩气产能模型的建立
田 冷1,2 高占武3 冯 波1,2
(1������ 中国石油大学 ( 北京) 石油工程教育部重点实验室, 北京 102249; 2������ 中国石油大学 ( 北京) 石油工程学院, 北京 102249; 3������ 中国石油长庆油田分公司第三采油厂 , 宁夏 银川 750004)
Abstract: Reserves of the shale gas are rich, their development is rather difficult, at present, the horizontal well fracturing method is usually adopted for the development. In the development of the oil and gas fields, the ultrasonic oil production has been on⁃site tested, and furthermore much better effects have been achieved. At present, the study of the ultrasonic⁃wave enhanced oil recovery is focused on the removal,, descaling and detection nearby the well of the reservoirs, with the technological development of the multistge fracturing in the horizontal wells, it is possible to improve the recovery of the shale gas by the ultrasonic wave. The desorption process was described by Langmuir equation, and the desorption process of the shale gas under the actions of different⁃power ultrasonic waves was experimentally studied quantitatively, the relationships between pL, VL and the ultrasonic⁃wave power were fit⁃ ted. The obtained laws of the ultrasonic wave actions were applied to the shale gas reservoir model based on the trip⁃ let flow, and moreover the slippage effect and stress sensitivity were considered to establish the shale gas productivi⁃ ty model considering the ultrasonic action. The dimensionless process for the model was conducted and Newton⁃
摘要: 页岩气储量丰富, 开发难度大, 目前多采用水平井压裂方式开采。 在油气田开发中, 超声波采油曾进行现场试验, 取得较好效果。 目前超声波提高采收率的研究集中于油藏近井解堵、 除垢、 检测, 随着水平井多级压裂工艺发展, 应用超 声波提高页岩气采收率成为可能。 用兰格缪尔方程描述解吸过程, 对不同功率超声波作用下页岩气解吸过程进行定量实验 研究, 拟合回归 pL ( Langmuir 压力) 、 VL ( Langmuir 体积) 与超声波功率之间关系。 将得到的超声波作用规律用于基于三 线性流的页岩气藏模型中, 并考虑滑脱效应、 应力敏感, 建立考虑超声波作用的页岩气产能模型。 对模型无因次化处理, 进行牛顿-辛普森迭代求解。 对不同超声波功率进行敏感性研究分析, 作用在页岩气藏的超声波功率越高, 产量衰减越慢, 累计产量越高。 关 键 词: 页岩气; 压裂水平井; 三线性流模型; 超声波; 多场耦合
中图分类号: TE377 文献标识码: A 文章编号: 1000⁃3754 (2019) 02⁃0159⁃07
Establishment of the shale gas productivity model under the acoustic shock effect
TIAN Leng1,2, GAO Zhanwu3, FENG Bo1,2 (1������ MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
2019 年 4 月
大庆石油地质与开发
Apr������ , 2019
第 38 卷第 2 期
Petroleum Geology and Oilfield Development in Daqing
Vol������ 38 No�����Байду номын сангаас 2
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