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发明公开
CN104712494A 一种使用PTFE和FEP共混物制作的螺杆钻具定子及应用于该定子的含氟材料 有权

一种使用PTFE和FEP共混物制作的螺杆钻具定子及应用于该定子的含氟材料
摘要：
本发明涉及一种使用PTFE和FEP共混物制作的螺杆钻具定子，该定子从外到内依次主要为定子金属外管、聚合物层，其中，聚合物层采用PTFE和FEP共混物制作。通过利用PTFE和FEP共混物在耐磨性、工作温度区间、耐候性好以及摩擦系数低等方面的优势，从而在螺杆钻具定子的工作温度区间以及在磨损率等方面有效改善钻具的性能，从而极大地延长了螺杆钻具定子的使用寿命，降低生产维护成本，提高钻井效率。
摘要（英）：

The invention relates to a screw drilling tool stator prepared from a blend of PTFE and FEP. The stator mainly comprises, from exterior to interior, an outer metal tube and a polymer layer, wherein the polymer layer is prepared from the blend of PTFE and FEP. In virtue of the advantages of good wear resistance, operating temperature range and weatherability, low friction coefficient and the like of the blend of PTFE and FEP, the performance of a drilling tool is effectively improved in the aspects of operating temperature range, wear rate and the like of the screw drilling tool stator, so the service life of the screw drilling tool stator is greatly prolonged, productive maintenance cost is reduced, and well drilling efficiency is improved.

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