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首页> 外文会议>SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition >Rheology Studies of Crosslinked Fracturing Fluids Utilizing Seawater
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Rheology Studies of Crosslinked Fracturing Fluids Utilizing Seawater

机译：利用海水交联压裂液的流变研究

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Seawater-based fracturing fluids are used to generate a stable crosslinked fracturing fluid for higher formation temperatures primarily using two types of guar derivatives—HPG and CMHPG. Results are compared to other seawater-based fracturing fluid data in the literature, as well as to traditionally used freshwater-based fracturing fluid. A HP/HT rotational rheometer for viscosity measurements was utilized to assess the stability of the fracturing fluid. Chlorous-acid-based breakers were also tested in the fracturing fluid at various temperatures to assess effectiveness of reducing fluid viscosity. Additionally, a phosphonate-based scale inhibitor was used at various concentrations to mitigate the formation of scales that arise from the mixing of seawater and formation water. The concentration of the additives and consequent results are all provided to display the functionality of the crosslinked gel using seawater. Results confirmed that a dual-crosslinked seawater-based fracturing fluid stability was feasible, as viscosity remained greater than 500 cP for two hours. Freshwater-based fracturing fluid displayed longer gel stability primarily because of a lack of salts that hinder polymer hydration. The stability time varied owing to the thermal degradation of the polymer. The high total of dissolved solids of the seawater had minimal effect on the breaker, as it reduced the stability time of the seawater-based fracturing fluids by over 50%. The introduction of new, cost-effective fracturing fluid formulations introduces environmentally friendly ways to find substitutes for fresh water in hydraulic fracturing operations.
机译：基于海水的压裂液用于产生稳定的交联压裂液，用于较高的形成温度，主要是使用两种类型的瓜尔衍生物-HPG和CMHPG。结果与文献中的其他海水的压裂流体数据进行比较，以及传统上使用的淡水类压裂液。用于粘度测量的HP / HT旋转流变仪评估压裂液的稳定性。在各种温度下，还在压裂液中测试基于氯酸基断路器，以评估减少流体粘度的有效性。另外，在各种浓度下使用基于膦酸的水垢抑制剂，以减轻来自海水和地层水的混合产生的鳞片的形成。添加剂的浓度和随后的结果均提供使用海水显示交联凝胶的功能。结果证实，双交联海水的压裂液体稳定性是可行的，因为粘度仍然大于500cp2小时。淡水基压裂液主要显示凝胶稳定性，主要是由于缺乏阻碍聚合物水化的盐。由于聚合物的热降解，稳定时间变化。海水的高溶解固体对断路器产生最小的影响，因为它将海水的压裂液的稳定时间降低超过50％。引进新的经济效益的压裂流体制剂介绍了对液压压裂操作中淡水的替代品的环保方法。

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