The South-Priobskoe Field is one of the largest oil pools in Western Siberia, with a unique category of reserves. Due to the low filtration properties of the productive formations AS10-AS12 (permeability of which is not more than 3 mD), the drilling of horizontal wells with subsequent multi-stage hydraulic fracturing (MSHF) completion is the most cost-effective way in this case. The use of highly viscous fracture fluids (at least 400 cP at 100 s~(-1)) and 16/20 mesh proppant with a maximum concentration of 800-900 kg/m3 and the slurry rates are not exceeding 4.0 m3/min, became a kind of standard during the MSHF. However, a steady decline of permeability in the newly drilled areas of the field is observed (below 0.5 mD), because of this, an effective half-length of cracks begins to make an increasing contribution to oil production. This paper describes the introduction of non-standard methods of hydraulic fracturing for a traditional reservoir, and an idea was the use of low-viscous fluids with increased slurry rates, which resulted in an increase in well production rates by an average of 7%.
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机译：South-Priobskoe领域是西伯利亚西部西伯利亚最大的油池之一，具有独特的储备。由于生产性地层的低过滤性AS10-AS10（不超过3 MD的渗透率），水平孔与随后的多级水力压裂（MSHF）完成是最具成本效益的方式案件。使用高粘性的断裂流体（在100s〜（-1）的至少400cc）和最大浓度为800-900kg / m 3的16/20目支撑剂，浆料率不超过4.0m 3 / min，在MSHF期间成为一种标准。然而，观察到该领域的新钻孔区域的渗透率的稳定下降（低于0.5 md），因为这一点，有效半长的裂缝开始对石油生产产生越来越大的贡献。本文介绍了传统水库液压压裂的非标准方法的引入，思想是使用低粘性液，增加浆料速率增加，这导致井生产率的增加平均为7％。
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