نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای flexible drill pipe:
n: specially manufactured drill pipe that has several pressure- tight joints over the length of the pipe. These joints allow the pipe to bend considerably more than regular drill pipe and are used in directional wells (especially horizontal ones) where the angle of deflection from vertical is relatively abrupt.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
