Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

Diego Antonio De Moura Fonseca,German Alberto Echaiz Espinoza,Alan Cassio Queiroz Bezerra Leite,Andres Ortiz Salazar,Elmer Rolando Llanos Villarreal

doi:10.1109/access.2020.3049116

Abstract

The electrical submersible pump (ESP) is widely used in the oil industry as an artificial lift method in deep wells, and its primary application of ESP is to increase the oil flow rate. Information such as the pump intake and discharge pressure, the oil reservoir and motor winding temperature, etc., provide critical data necessary to ensure proper ESP system operation and optimize production. In this article, an ESP downhole parameter monitoring system is proposed. Potentiometers are used to generates analog signals, emulating the analog sensors. The information is sent up to the surface based on the current loop through the same power cable by DC signals overlapping to AC signals in the proposed design. The article details the construction of the communication protocol and electronic circuits used in telemetry. The tests were carried out in an oil-producing company to validate the proposed telemetry system’s reliability and accuracy. The good results of the robust design demonstrated it to be a promising downhole sensor for industrial applications.

Highlights

Information such as downhole pressure and temperature are valuable in order to optimize production and help in identifying or avoiding problems that may lead to an undesired shut-down of an oil well [1].As important artificial lifting equipment, electric submersible pump perform an irreplaceable role in the secondary and tertiary oil recovery, which puts forward higher requirements for the application reliability of electric submersible pump [2]
Despite the second position in terms of facilities, electric submersible pump (ESP) is the system with the highest sales, 54% of the artificial elevation market representing in 2014 43% of the global annual expenditure in that market
FIELD DATA TRANSFER TEST WITH ESP SYSTEM IN OPERATION In order to verify the behavior of the current signal sent by the emitter module along the three-phase cable and in an environment without noise, at the first moment, a test was performed with the system de-energized

Summary

Introduction

As important artificial lifting equipment, electric submersible pump perform an irreplaceable role in the secondary and tertiary oil recovery, which puts forward higher requirements for the application reliability of electric submersible pump [2]. The total number of oil wells worldwide utilizing some method of artificial lifting is around 95%, the most common. Being the Mechanical Pump (BM), with 74% of the total number of these facilities, followed by the ESP [5]–[7], with an amount ranging from 150 to 200 thousand wells in operation [8]. Considered the best choice when high production volumes are required, ESP is typically used in wells with a production of 200 to 20,000 barrels of oil per day, it is a high-cost method. Considered the best choice when high production volumes are required, ESP is typically used in wells with a production of 200 to 20,000 barrels of oil per day, it is a high-cost method. [5], [9]–[11]

Methods

Results

Conclusion