Study and Application of Rubber Powder LCM Made from Waste Motor Tires
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摘要: 目前在中国废旧轮胎的再利用率比较低,而橡胶作为堵漏材料在油田应用方面有其独特的性能优势:易形变、膨胀自封、物理及化学稳定性好等。通过对废旧汽车轮胎的粉碎处理,形成不同粒径的橡胶颗粒,在室内进行堵漏实验评价。结果表明,橡胶颗粒XJ-1最小封堵压力为2.8MPa,击破压力为3.6MPa,单独使用可封堵0.5~1mm裂缝,复合其他堵漏材料可封堵2~3mm裂缝,承压能力达4MPa,橡胶颗粒抗温达135℃。橡胶堵漏材料应用于油田堵漏作业中,可以解决复杂井漏问题,成本低廉,同时降低环境保护压力。Abstract: Waste motor tires, which are seldom reused in China, can be used to make lost circulation materials (LCM) because of their advantages such as good flexibility, capability to plug when swelling, and stable physical and chemical properties. Waste tires were first ground to powders of different sizes and the rubber powders were then tested for their capability in lost circulation control. The evaluation results demonstrate that the rubber powder LCM XJ-1, has the minimum pressure required for plugging, which is 2.8 MPa, and a breakthrough pressure of 3.6 MPa. Use XJ-1 alone, fractures of 0.51 mm in size can be plugged. When used with other LCMs, fractures of about 23 mm in size can be plugged, and the pressure bearing capacity can be as high as 4 MPa. The rubber powders retain their stability at high temperatures to 135℃. As a cheap and environmentally friendly lost circulation agent, rubber powders can be used to control severe mud losses.
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Key words:
- Motor tire /
- Rubber /
- Lost circulation control
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