Kelly01
02/19/24 03:56 AM
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MEMS gyroscope is a new technology in the 21st century, which is widely used in various fields, and its status in the field of oil and gas is gradually improving. With the deepening of oil and gas exploration and development, the geological conditions faced by drilling and completion engineering become more and more complicated. Most downhole MWD tools are mainly used for single dimension measurement near the bit, and they cannot measure the physical parameters such as downhole temperature and pressure in the whole wellbore. In order to solve this problem, micro-measuring instruments based on MEMS technology, which are small in size, flexible in delivery and can move quickly with the fluid circulation in the wellbore, have gradually attracted the attention of the industry.
Introduction
Borehole measurement and control MEMS sensor technology was selected as one of the top ten scientific and technological advances in international petroleum in 2018, reflecting that the technology has become a consensus as the forefront direction of emerging technologies, which provides a broad space for the development of MEMS gyroscope measurement technology based on MEMS technology. Oil and gas wellbore environmental conditions are complex, high temperature, high pressure, strong vibration, corrosion and other harsh conditions converge, put forward extremely high requirements for the safety and stability of downhole tools, and the size of MEMS gyroscope is small, usually millimeter level, it can be high temperature, high pressure and corrosion resistant packaging, so that it can be measured in the harsh environment of the downhole. Due to the high integration, low power consumption, small size and low price of MEMS gyroscope, microchips have significant advantages in the field of measurement.
In this paper, the micro-measuring instrument based on MEMS gyroscope is suitable for collecting multiple physical parameters at the same time with the fluid moving inside the narrow pipe, and the micro-measuring instrument is put into the well in large quantities at one time to form the saturation measurement of multiple physical quantities in the wellbore, so as to realize the maximum perception of the real situation in the well. Obtaining downhole engineering parameters through MWD tools is an effective means to accurately grasp wellbore information. Based on MEMS technology, a micro-measuring instrument is developed that integrates the measurement of downhole temperature, pressure, magnetic field and dynamics signals, so as to realize the collaborative measurement of multiple underground physical fields, and the ultimate goal is to judge complex downhole working conditions through the analysis of multi-dimensional data. The mobile efficiency and functional integrity of the micrometer are verified by the indoor column cycling test.
This paper will introduce the overall design of the micrometer, the development of the kernel system, the development of the external shell, the indoor experiment test and the calculation of the moving speed of the micrometer. Due to the large content, this topic will be divided into two parts to elaborate.
https://www.ericcointernational.com/appl...yroscope-1.html
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