The working principle of inclinometer.
Let me briefly introduce the inclinometer commonly used in petroleum logging, which is a kind of in-situ monitoring instrument for measuring the dip angle and azimuth of borehole. The required data can be obtained through all kinds of sensor components in the survey sensor, and then the data can be recorded from the high-temperature memory to obtain the relevant azimuth angle, dip angle, temperature data, depth, tool face angle and other parameters that engineers want to know, so as to determine the specific situation of the drilling.
In foreign countries, inclinometer has been used for position monitoring in earth dam, roadbed, slope and tunnel and other geotechnical engineering since 1950s. Our country began to introduce inclinometer sensors from the United States, Japan, Britain and other foreign countries and monitor some important geotechnical engineering in the 1980s. In order to better develop the exploration of oil, coal, offshore oil well development of China’s research and development in this area is also as a large project to carry out, and some related research institutions developed resistance strain type, accelerometer type and electronic meter type and other intelligent inclinometer.
Up to now, various inclinometers have been widely used in the fields of water conservancy and hydropower, mineral metallurgy, transportation and geotechnical engineering for urban construction, and have played an important role in ensuring the safety of geotechnical engineering design, construction and use.
Inclinometer application fileds: borehole survey, foundation pit, foundation, wall, dam slope, oil field logging, marine logging exploration, coal mine exploration, etc.
How does the inclinometer work?
Working principle of inclinometer when measuring angle probe from bottom to top in the dip tube piecewise sliding when measuring, the probe’s sensor is sensitive to reflect the dip tube in the angle changes in the depth of each segment, and then according to the tilt angle and the horizontal displacement at different elevation of the incremental, from the bottom of the dip tube station began to piecewise accumulative, can get the horizontal displacement at any height, when the inclinometer observation, in order to eliminate and reduce the zero drift and assembly error of the instrument, the data should be measured and read once in the positive direction of displacement and in the opposite direction after the probe turns 180 degrees, and the algebraic average value of the measured data in the positive and negative directions should be taken as the measurement value of inclination.