The technical characteristics, application, development and the success of each method are discussed. The technical superiority of mechanized drilling is expounded emphatically.
各种方法的技术特征、应用情况和取得的成效，并作重论述了机械化钻井的技术优势。
The technical characteristics, application, development and the success of each method are discussed. The technical superiority of mechanized drilling is expounded emphatically.
各种方法的技术特征、应用情况和取得的成效，并作重论述了机械化钻井的技术优势。
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