油气上窜速度实用计算方法

Practical Calculation Method of Oil and Gas Ascending Velocity

摘要:

油气上窜速度对钻井施工中下一步施工方案的制定具有重要参考价值。文章在总结分析前人经验的基础上结合现场施工实际对传统油气上窜速度计算公式加以修正，并对修正后的公式中涉及到的参数进行了逐一分析，在不影响正常施工工序的条件下使公式中各参数取值准确性进一步提高。通过现场工程测试，该方法简单实用且计算准确性较高。该计算方法在保证计算结果准确性的同时，也具备较强的现场可操作性，通过大量的实践检验后可进一步推广。

关键词:上窜速度;油气钻井;环空;泥浆上返速度

Abstract:

Oil and gas ascending velocity plays an important role in making next-step work plan during drilling operation. In this paper, the traditional formula of oil and gas ascending velocity is modified based on the analysis on previous experience and combined with the actual construction practice, and the parameters involved in the revised formula are analyzed one by one, the accuracy of each parameter in the formula is further improved without affecting the normal construction procedure. Through the field engineering test, this method is proved to be simple and practical with high calculation accuracy. This method can not only ensure the accuracy of the calculation results, but also has good maneuverability.

Key words:oil and gas ascending velocity; oil and gas drilling; annular; mud return velocity