| 适于湘西北页岩储层的携砂液的性能实验研究 |
| 投稿时间：2018-07-25 修订日期：2018-07-25 点此下载全文 |
| 引用本文：张 政,曹 函,王天一,等.适于湘西北页岩储层的携砂液的性能实验研究[J].钻探工程,2018,45(10):83-86.ZHANG Zheng,CAO Han,WANG Tian-yi,et al. Experimental Study on Performance of Sand-carrying Fluid Based on Shale Gas Reservoir in North-western Hunan[J]. Drilling Engineering, 2018,45(10):83-86. |
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| 基金项目:国家自然科学基金项目“含煤层气储层物性与压裂液微观特性动态耦合作用机理研究”（编号：41302124）；“油气藏地质及开发工程”国家重点实验室开放基金项目“多尺度下页岩气储层脉冲水力压裂造缝时空效应研究”(编号：PLN201607) |
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| 中文摘要:湘西北页岩气储层致密，具有低孔、低渗等特点，需要对储层进行压裂改造，而携砂液的携砂能力实验，对其性能进行了研究。研究表明：携砂液属于假塑性流体，SDBS浓度为0.03%时，其流性指数最小，稠度系数最大，而且结构粘度相对其流阻比值最大，适合于湘西北页岩储层压裂改造；携砂液粘弹性携砂能力与其结构粘度有关，而且结构粘度（ηs）与沉降速率（v）满足v=-0.016ηs+2.304。 |
| 中文关键词:湘西北页岩储层 携砂液 结构粘度 粘弹性携砂 |
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| Experimental Study on Performance of Sand-carrying Fluid Based on Shale Gas Reservoir in North-western Hunan |
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| Abstract:Shale gas reservoirs in the northwestern Hunan are dense, with low porosity and low permeability, and it is necessary to fracture the reservoir. The proppant-carrying capacity of the fracture fluid is the key to successful fracturing. In view of the characteristics of shale gas reservoirs in northwestern Hunan, the rheological properties and viscoelastic sand-carrying experiments were conducted to optimize the concentration of SDBS used as the main sand-carrying medium. The results show that the proppant-carrying fluid belongs to pseudo plastic fluids. When the concentration of SDBS is 0.03%, it provides the smallest fluidity index, the largest consistency coefficient, and the largest ratio of the structural viscosity/the flow resistance, and is ideal for the shale reservoir fracturing in the northwestern Hunan. The viscoelastic sand carrying capacity of the proppant-carrying liquid is related to its structural viscosity, and the structural viscosity (ηs) and precipitation rate (v) satisfy v=-0.016ηs +2.304. |
| keywords:shale reservoir in the north-western Hunan proppant-carrying fluid structural viscosity viscoelastic carrying |
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