the high grade rate for intermediate casing is 83.3%, for production casing is 100 %, increased 47. 7% and 48. 8% compared to pre - experiment respectively.
the configuration and principle of anti rotary plug and necessary float collars and their applications in intermediate casing cementing are introduced.
介绍了防转胶塞及配套浮箍的结构、原理和在技术套管固井中的应用情况。
k2 method -- intermediate casing with the bottom right side view door;