The most popular acid system for sandstone matrix acidizing is the conventional mud acid system.
常规土酸体系是砂岩酸化最常用的酸液体系。
Air drilling is a kind of under-balanced drilling technology with air, whose rock breaking form is different from conventional mud drilling.
空气钻井技术是以空气作为循环介质的欠平衡钻井技术，其钻头的破岩形式与常规泥浆钻井有很大的区别。
The particularity and complexity of sidetracking horizontal wells through the opened casing hole has brought severe challenges to conventional mud logging.
套管开窗侧钻小井眼水平井钻井技术的特殊性及复杂性给传统常规录井带来了严峻的挑战。
Method Mud invasion process is simulated with conventional three axis rock strength test device under same downhole pressure and temperature.
方法采用常规三轴岩石强度试验装置，进行井下温度压力条件下的泥浆侵入过程模拟试验。
During initial reservoir development period, the result of well stimulation using conventional fracturing, limited entry fracturing and mud acidizing is poor.
油藏开发初期，曾采用常规压裂，限流压裂和土酸酸化等增产措施，但效果不理想。
It is a big change to conventional way of drilling mud circulation.
是常规钻井泥浆循环方式的重大变革。
A magnet and magnetic mud are inserted into contact face of conventional artware to magnetize the contact faces.
它的特征是在传统装饰工艺品的接触面嵌进磁铁和磁泥，使接触面具有磁吸引力。
Once cores are damaged by oil-based mud, it is difficult to restore the permeability of cores to its original level by applying the conventional technique of water injecting and washing.
岩心被油基泥浆损害后，凭常规的注水冲刷手段，渗透率很难恢复到原来的水平。
It is analyzed why sand-removing effect of conventional cyclone desander is bad, and it is pointed out that the column of whirling gas in the center has a marked effect on purifying mud.
通用旋流除砂器中心部位出现的涡旋气柱会对泥浆净化效果产生不良影响。
Conventional improvement methods of soft ground are ineffective or unpractial for ultra-soft soil formed by newly hydraulic mud fill.
对于新近吹填淤泥形成的超软土地基，常规软基处理方法难以取得理想加固效果或根本无法实施。
Conventional improvement methods of soft ground are ineffective or unpractial for ultra-soft soil formed by newly hydraulic mud fill.
对于新近吹填淤泥形成的超软土地基，常规软基处理方法难以取得理想加固效果或根本无法实施。
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