【每日一词】【五四活动】之log——摘自斯伦贝谢网站的Oilfield Glossary [复制链接]

                                                                                   log   测井

1. vb. [Drilling] ID: 1466
See: wireline log
2. n. [Formation Evaluation] ID: 2988
The measurement versus depth or time, or both, of one or more physical quantities in or around a well. The term comes from the word "log" used in the sense of a record or a note. Wireline logs are taken downhole, transmitted through a wireline to surface and recorded there. Measurements-while-drilling (MWD) and logging while drilling (LWD) logs are also taken downhole. They are either transmitted to surface by mud pulses, or else recorded downhole and retrieved later when the instrument is brought to surface. Mud logs that describe samples of drilled cuttings are taken and recorded on surface.
Alternate Form: well log
See: real-time data, recorded data
3. n. [Formation Evaluation] ID: 2989
The display of one or more log measurements on a strip of paper or film (a hard copy) with depth in one axis. In this sense, the term refers to the display not only of the measurement but of other relevant information. A typical log is presented on folded paper of indeterminate length, but about 8.5-in. [21.5-cm] wide. It consists of a heading, well sketch, logging tool sketch, insert, main log, repeat section and tail. When the term is used in this sense, each log measurement is usually referred to as a curve.
4. vb. [Formation Evaluation] ID: 2990
To record a measurement versus depth or time, or both, of one or more physical quantities in or around a well.
Synonyms: survey
5. adj. [Formation Evaluation] ID: 2991
Associated with the information from a log. For example, a log print is a paper print on which log data have been recorded.
大家可以选择不同的测井方式跟帖，如声波测井，核测井，电法测井等

【每日一词】【五四活动】之log——摘自斯伦贝谢网站的Oilfield Glossary
探边测井 不知道翻译的对不对 望高手指正
bound-fluid log

1.  n.  [Formation Evaluation] ID: 3451

A type of nuclear magnetic resonance (NMR) log that is designed to record properly only the bound fluid. Bound fluid is characterized by a fast relaxation time, typically less than 33 ms in sandstones and 100 ms in carbonate rocks. Therefore, the wait time for a bound fluid log can be much shorter than for standard NMR logs, with the result that logging speeds are much faster.

compensated neutron log 补偿中子测井

1.  n.  [Formation Evaluation] ID: 3414
A neutron porosity log in which the effects of the borehole environment are minimized by using two detectors. In the most common technique, the two source-detector spacings are chosen so that the ratio of the two count rates is relatively independent of the borehole environment. This ratio is then calibrated in terms of porosity in a known formation and borehole environment typically with the tool placed against the side of an 8-in. [20-cm] borehole in a limestone block, both filled with fresh water at surface temperature and pressure. The response is also determined at different porosities and in sandstones, dolomites and other borehole environments. Correction factors are developed to convert the measured log to the standard conditions.
The source and detectors are not azimuthally focused. Wireline tools are run eccentralized against the borehole wall. Since the neutrons emitted into the mud are strongly attenuated, the resulting log is effectively focused into the formation. Measurements-while-drilling tools will normally be unfocused since they are centralized unless the borehole is overgauge.
The vertical resolution is about 2 ft [0.6 m], but can be improved by alpha processing.
See: chemical neutron source, epithermal neutron porosity measurement, limestone porosity unit, limestone-compatible scale, thermal neutron porosity measurement, vertical resolution

flowing neutron log 流动中子测井
1.  n.  [Production Logging] ID: 10987
A neutron porosity log recorded while the well is flowing to determine the gas-oil contact in the borehole. The log is often compared with a log run while the well is shut-in. The term was used in the1950s and 1960s but is now obsolete.
See: fluid-interface log, gas-oil contact, neutron porosity, production log

injection pulsed neutron log 注入脉冲中子测井
1.  n.  [Production Logging] ID: 10872
An in-situ recording in which a material with high neutron-capture cross section is injected into the flowstream of a production or injection well to determine fluid paths and velocities. The material used is normally borax or water with high salinity, both of which cause a significant increase in the capture cross section measured by a pulsed-neutron log. In the most common application, the material is injected across the producing intervals of a production well. By comparing pulsed neutron logs recorded before and after injection, the injectivity, and hence productivity, of each interval can be estimated. Any cement channels or leaks will also be observed.
See: injection well, neutron capture, production log, tracer measurement, tracer-loss measurement
neutron log 中子测井
1.  n.  [Formation Evaluation] ID: 3432
Normally synonymous with a neutron porosity log. However, the term is sometimes broadened to include an activation log.