出砂故障井の改修と新装孔明管に就て
1948 年 13 巻 1 号 p. 1-7
詳細
1948 年 13 巻 1 号 p. 1-7
At the Shonai Oil Field, Yamagata, the sand trouble of producing oil wells are so severe that it is almost impossible to produce oil by ordinary perforated liner pipes. After many trials, the expected production is regularly maintained by using the double anchor pipes 41/2" and 21/2" O. D., having perforations of about 1/16" in diameter.
