2016年6月第35卷第3期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI:10.3969/J.ISSN.1000-3754.2016.03.014
压裂水平缝渗流特征及影响因素
孟选刚",2
邵长金4
杜志敏’王香增？白艳改3
（1.西南石油大学石油T程学院，四川成都610500：2.延长油田（集团）责任有限公司，陕西西安
717111;
3.中国石油大学石油工程学院，北京102249；4.中国石油大学理学院，北京102249）
June，2016 Vol. 35 No, 3
摘要：为了突破压裂水平缝必须为圆形的假设条件限制，研究了更一般的圆形压裂水平缝渗流模型。基于 Newman乘积方法和格林函数思想，用无限大地层中的椭圆面源函数和垂直方向条带形地层中条带源函数的乘积得到压裂水平缝的压力响应。从压力及其导数的响应两个方面分析了水平缝渗流特征，分析了裂缝与渗透率的综合因子、裂缝形状、裂缝开度、裂缝位置等参数对渗流特征的影响。以实际油田一口压裂水平缝井的测试为例，应用椭圆水平缝渗流模型能够明确判断水平缝的存在，给出符合实际情况的解释。结果表明，椭圆水平缝模型具有很好的适应性。
关键词：四；水平缝；压裂；渗流；特征
中图分类号：TE312
文献标识码：A
文章编号：1000-3754（2016）03-0073-05
SEEPAGECHARACTERISTICSANDTHEIRAFFECTINGFACTORS
FORTHEFRACTUREDHORIZONTALCRACKS
MENG Xuangang'-2, DU Zhimin', WANG Xiangzeng”, BAI Yangai', SHAO Changjin*
(1.School of Oil & Natural Gas Engineering,Southvest Petroleum University, Chengdu 610500, China; 2. Yanchang Petroleum (Group) Co. Lid., Shaanxi 717111, China; 3. College of Petroleum Engineering，
China University of Petroleum, Beijing 102249, China; 4. College of the Sciences,
China University of Petroleum,Bejing 102249,China)
Abstract: In order to break through the restrictions that the fractured horizontal fractures must be rounded, a morc general elliptical horizontal fracture filtrating model was studied. Based on Newman's product method and thought of Green's function, the pressure response of the fractured horizontal cracks was given by the product of the elliptical source function in an infinite fornation and the strip source function in the vertical strip-shaped formations. The seepage characteristics of the horizontal fractures were analyzed from both responses of the pressure and its deriva-tive; the impacts of the comprehensive factor of the fractures and permeability, crack shapes, crack opening, crack location and other parameters on the flow characteristics were studied. Using the proposed elliptical fracture model, one actual oilfield well test in the fractured horizontal-crack well was made for example, the horizontal fractures can be clearly ensured and determined, and moreover the coincident interpretation was presented with the fact. The a-chievements show that the elliptical horizontal fracture model has much better adaptability.
收稿日期：2015-08-27
改回日期：2016-02-19
基金项目：中国石油天然气股份有限公司发展战略与科技基础工作决策支持研究"质量计量标准化研究"（2012D-5010）。作者简介：盂选刚，男，1981年生，工程师，在读博士，主要从事油气田开发方而的研究。
E-mail:644801977@qq.com
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