一种新型光纤油井井下压力传感器

Abstract

Abstract:

Temperature and pressure are two significant reasons directly affecting oil production rate. This paper presents a new Fiber Bragg Grating (FBG) based pressure sensor for oil well application.This sensor breaks through domestic laboratory limitations for the oil well application of a pressure sensor and is quite significant for the increase of oil production rate. Its performance parameters are measurement range of greater than 50 MPa, working temperature of -20～170℃, measurement accuracy of 0.5％FS, and pressure coefficient of up to 41.92 pm/MPa after encapsulation. This sensor has such positives as online, realtime and longterm detection for the temperature and pressure in an oil well, simple structure, high measurement accuracy, intrinsic safety and easy networking.It has been applied to the Tianjin experimental well of China National Offshore Oil Corporation (CNOOC).

Key words: well logging, fiber Bragg grating, sensor, pressure and temperature detection

CLC Number:

TP212.4

LV Jing-Sheng, GUO Shi-Sheng, WANG Chang, YAN Bo. A new optical fiber pressure sensor for oil well application[J].J4, 2011, 24(2): 47-50.

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Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which permits third parties to freely share (i.e., copy and redistribute the material in any medium or format) and adapt (i.e., remix, transform, or build upon the material) the articles published in this journal, provided that appropriate credit is given, a link to the license is provided, and any changes made are indicated. The material may not be used for commercial purposes. For details of the CC BY-NC 4.0 license, please visit: https://creativecommons.org/licenses/by-nc/4.0

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A new optical fiber pressure sensor for oil well application

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