Evaluation of Improving Water Flooding Technology by Volume Fracturing of Water Injection Wells in Complex Fractured Reservoirs: A Case Study of Chang 6 Reservoirs in Huaqing Oilfield, Ordos Basin

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">(<i>σ</i><sub>H</sub>-<i>σ</i><sub>h</sub>)/MPa</td><td class="align_center">Fracture characteristics</td><td class="align_center">Realization difficulty of volume fracturing</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">&gt;10</td><td class="align_center">Single crack</td><td class="align_center">Large difficulty and small transformation volume</td></tr><tr><td class="align_left">&gt;5</td><td class="align_center">Mainly single crack</td><td class="align_center">Volume fracturing is difficult, and the reconstruction volume is small</td></tr><tr><td class="align_left">&lt;5</td><td class="align_center">Volume crack</td><td class="align_center">Easy volume fracturing and large reconstruction volume</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Fracture characteristics and realization difficulty of volume fracturing under different two-dimensional horizontal principal stress difference.</div>

Geofluids

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Table 1

Table 1: Evaluation of Improving Water Flooding Technology by Volume Fracturing of Water Injection Wells in Complex Fractured Reservoirs: A Case Study of Chang 6 Reservoirs in Huaqing Oilfield, Ordos Basin 

Table 1 | Evaluation of Improving Water Flooding Technology by Volume Fracturing of Water Injection Wells in Complex Fractured Reservoirs: A Case Study of Chang 6 Reservoirs in Huaqing Oilfield, Ordos Basin 