Mechanical Design and Analysis of an Intelligent Oil Well Sensory System

Abstract

Optimal revenue of oil and gas fields is of interest due to high price and limited amount of these sources of energy. In this way, smart well technology provides a numerous range of benefits and for these great advantageous is widely used in oil/gas industry. This technology involves down-hole measurement and control of well bore and reservoir flow. One of the most important down-hole control subsystems in a smart well is pressure and temperature sensing system which can help the reservoir being modeled accurately. The purpose of this paper is to design and analysis a new sensory package for a desired oil well. A brief review of the advantages of fiber optic sensing technology in smart well control system is performed. Having studied several possibilities of installation systems for sensors, a new arrangement and casing for temperature/pressure sensor is developed here. Effect of pressure and temperature on stress distribution in the casing has been investigated and a suitable casing is obtained.

Simultaneous measurement of down-hole pressure and distributed temperature with a single fiber

“…Pressure and temperature are two important parameters in optimizing the production rates of well and reservoir recovery [1,2]. Fiber-optic sensors, with advantages such as small size, high sensibility, immune to electromagnetic interference, resistant to harsh environment and remote sensing capability [3,4], are the best candidates for down-hole monitoring [5,6]. Over the past decade, several types of fiber-optic sensors have been demonstrated for sensing pressure and temperature information down hole.…”