超低渗透砂岩储层同步压裂先导性矿场试验

doi:10.13722/j.cnki.jrme.2015.02.012

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摘要为了探索同步压裂在超低渗透砂岩储层的适应性，提高超低渗透砂岩储层开发效果，以长庆油田陇东地区的双水平井阳平1井和阳平2井为试验井，对双水平井同步压裂机制以及压裂优化设计方法进行深入研究，并开展矿场试验。施工中裂缝延伸的微地震监测以及压后试油数据表明：压裂缝展布形态复杂，呈网络化扩展；阳平1井和阳平2井压后试油产量分别达到了132.3和109.5 m3/d，相比该井区直井压后试油平均产量14.1 m3/d分别提高了约9.4和7.8倍，反映双水平井同步压裂能实现对长庆油田超低渗透砂岩储层的充分改造，扩大水力裂缝对储层流体流动的控制范围，提高采油速度和最终采收率。为此，双水平井同步压裂为长庆油田超低渗透储层的高效开发提供了增产工艺技术选择，具有巨大的推广价值和应用前景，对我国超低渗透储层的增储上产具有十分重要的现实意义。

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关键词 ：岩石力学, 超低渗透, 同步压裂, 矿场试验, 双水平井

Abstract：The adaptability and the effect of simultaneous hydraulic fracturing in sandstone reservoirs of ultra-low permeability was investigated in the field tests in two adjacent horizontal wells，Yangping-1 and Yangping-2， located in Longdong area，Changqing oilfield，China. The simultaneous fracturing treatment was performed in the two testing wells. Micro-seismic monitoring analysis of fracture propagation during the stimulation treatment indicates that hydraulic fractures present a pattern of complicated network expansion. The test data after fracturing show that the daily production of the well Yangping-1 and the well Yangping-2 reaches 132.3 and 109.5 m3/d respectively，which are approximately 9.4 times and 7.8 times the daily production of a fractured vertical well in the same area. It is also shown that the simultaneous hydraulic fracturing of two adjacent horizontal wells enlarge the expansion area of hydraulic fractures to obtain a larger drainage area and to realize the full stimulation of ultra-low permeability sandstone reservoirs in Changqing oilfield.

Key words： rock mechanics ultra-low permeability simultaneous fracturing field tests double horizontal wells

收稿日期: 2013-12-12

引用本文:

任岚1，陶永富1，赵金洲1，杨克文2，胡永全1，王秀娟2. 超低渗透砂岩储层同步压裂先导性矿场试验[J]. 岩石力学与工程学报, 2015, 34(02): 330-339.
REN Lan1，TAO Yongfu1，ZHAO Jinzhou1，YANG Kewen2，HU Yongquan1，WANG Xiujuan2. SIMULTANEOUS HYDRAULIC FRACTURING FIELD TESTS IN ULTRA-LOW PERMEABILITY SANDSTONE RESERVOIRS OF CHANGQING OILFIELD. , 2015, 34(02): 330-339.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.02.012 或 http://www.rockmech.org/CN/Y2015/V34/I02/330

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