دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the devices used to measure and record the downhole layer ,fluid property,state of the wellbore and some parameters relational with drilling

n: (DST) the conventional method of formation testing. The basic drill stem test tool consists of a packer or packers, valves or ports that may be opened and closed from the surface, and two or more pressure-recording devices. The tool is lowered on the drill string to the zone to be tested. The packer or packers are set to isolate the zone from the drilling fluid column. The valves or ports are then opened to allow for formation flow while the recorders chart static pressures. A sampling chamber traps clean formation fluids at the end of the test. Analysis of the pressure charts is an important part of formation testing.

n: during drilling or affter well completation ,lower the drillstem tester into the layer to make the pressure build up test so as to eatimate the layers and the fluid parameters

n: the coordinate curve used to record the well depth,lithologic character and drilling parameters

n: the equipment which can sense and transfer the drilling parameters

n: all factors affecting the drillig speed including unchangeable paramters and changeable parameters

n: an instrument that records hook load, rate of penetration, rotary speed and torque, pump rate and pressure, mud flow, and so forth during drilling. drilling rig n: see rig.

n: the instrment used to record the drillng parameters during drilling such as the drill speed ,rotate speed ,drill pressure ,torque , fluid volume,pump pressure ,hook load and fluid ability and so on

n: the affect to drilling speed caused by the change of two or more drilling parameters

n: the drilling parameters which can change in certain realm

n: analyse and evaluate the situation of abrasion of the used bit (tooth, bearing and diameter),working index,and drilling parameters to offer reference to bit selection for next well or
next hole section