Effects of edge-seal design on the mechanical and thermal performance of vacuum-insulated glazing

Zhu, Wenyuan; Shah, Bipin; Gorti, Sarma B; Bhandari, Mahabir; Sabau, Adrian S.; Shin, SangJoon

doi:10.1016/j.buildenv.2022.109572

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Thermal sealing is an obstacle faced by wire less drilling instruments. Currently, there are few patents and related articles and, espe cially, a lack of analysis and evaluation methods [17][18][19][20].…”

Section: Seal Designmentioning

confidence: 99%

“…The thermal sealing design process is shown in Figure 5. (iii) Design of pressure transmission The circular injection holes are designed to inject resin, avoiding direct contact between the crystal pressure gauges and mud, and ensuring the accuracy of the pressure values [18][19][20]. The electronic cartridge adopts a core shaft circuit installation method, which directly installs the circuit board, crystal pressure sensor, and related accessories on the circuit core shaft, fixed with screws, allowing the mud to pass through.…”

Section: Seal Designmentioning

confidence: 99%

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Research and Test on the Device of Downhole Near-Bit Temperature and Pressure Measurement While Drilling

Liao

Wang

et al. 2023

Processes

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The accurate acquisition of downhole engineering parameters, such as real-time pressure and temperature measurements, plays a crucial role in mitigating drilling risks and preventing accidents. In this study, we present the design of a real-time data acquisition and transmission system for drilling operations. The system utilizes a near-bit measurement method to simultaneously measure downhole parameters, including mud pressure and temperature. By analyzing the pressure and temperature frequencies obtained from a quartz crystal pressure gauge and compensating for temperature effects, accurate pressure values are obtained. The resistance value of a PT1000 sensor is measured, and a second-order fitting is performed using laboratory scale coefficients to determine the temperature values. The data acquisition system employs an advanced microcontroller as the main control chip, along with an A/D conversion chip. Additionally, signal amplification, data storage modules, data transmission modules, and relevant peripheral circuits are designed. The field tests were conducted in the 4605~4620 m well section of well Qing 2-76 in the Yumen Oilfield. The results demonstrate stable transmission signals and accurate decoding, enabling the real-time monitoring of pressure and temperature. The tests yielded favorable outcomes, providing a tangible means to analyze the actual operating conditions of the downhole drill string.

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Section: Seal Designmentioning

confidence: 99%

Section: Seal Designmentioning

confidence: 99%