燃气管道施工中，定向钻孔施工技术是一项常用的施工技术，为提高燃气管道的施工质量，必须加强对定向钻孔施工技术的把控，从细节入手，保障......

Oil well drilling program is very complex and requires extra precaution to be taken in each step.Inaccurate optimization......