aps's drilling dynamics monitor (ddm?)* measures and records weight on bit, torque on bit, bending on bit, internal and annular pressure and temperature.
aps鉆井动态监测短节(ddm)测量和记录鉆头处的鉆压、扭矩、弯矩、鉆具内和环空的压力和温度。
this paper presents a theoretical model for realistic annular pressure loss calculation in which the eccentricity is a function of the well depth and a simplified method for field calculations.
本文介绍偏心度为井深函数的实际环空中压降计算的理论模型和便于现场使用的简化计算方法。
experimental and theoretical research has improved that hole cleaning detecting is efficient by monitoring annular pressure change.
研究表明,利用环空压力变化可以有效监测井眼清洁程度。
first, the paper builds physical model and creates mesh of the liquid annular pressure seal.
首先研究建立环形密封物理模型和划分计算区域网格的方法;
the device adopted tms320lf2407a as main controller. it can determine and record four drilling parameter of drilling pressure, torque, annular pressure and side pressure in the real-time mode.