Signal transmission system for monitoring downhole working conditions of electric submersible pump
A technology of signal transmission system and submersible electric pump, which is applied in the direction of electrical signal transmission system, signal transmission system, measuring device, etc., can solve the problems of inaccurate information transmission and high requirements on the accuracy of reference working current measurement.
Inactive Publication Date: 2020-10-20
TIANJIN UNIV
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However, the use of this signal transmission method requires high measurement accuracy of the reference working current. If there is an excessive deviation in the measurement of the reference current, there will be a problem of inaccurate information transmission.
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0020] as attached figure 1 As shown, a signal transmission system for downhole working condition monitoring of an electric submersible pump includes a downhole data signal transmission module and a surface data signal receiving module.
[0021] Wherein the surface data signal receiving module is connected with the oil well power supply cable through the ground three-phase reactor using the star point connection method; the downhole data signal transmission module is connected with the submersible electric pump motor winding connected with the oil well power supply cable, and the downhole data signal transmission module A time-varying high and low current affected by the measured par...
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The invention discloses a signal transmission system for monitoring downhole working conditions of an electric submersible pump. The signal transmission system comprises a downhole data signal transmission module and a ground data signal receiving module; the ground data signal receiving module is connected with an oil well power supply cable through a ground three-phase reactor by adopting a starpoint connection method; the underground data signal transmission module is connected with an electric submersible pump motor winding connected with an oil well power supply cable; the underground data signal transmission module is used for completing data measurement and acquisition and data transmission, and the ground data signal receiving module is used for completing data receiving, data display and storage and remote communication; the downhole data transmission module generates high and low currents which are influenced by measurement parameter values and change along with time, and the ground data signal receiving module analyzes the currents to obtain a transmission result.
Description
technical field [0001] The invention relates to the field of signal transmission for downhole working condition monitoring, in particular to a signal transmission system for downhole working condition monitoring of a submersible electric pump. Background technique [0002] As oil exploration enters the middle and late stages, shallow oil resources are increasingly depleted, oil wells are getting deeper, well temperature is getting higher, well pressure is getting lower and lower, and a large number of deviated wells and horizontal wells appear. It's getting more and more difficult in this situation. In order to solve these problems, electric submersible pumps are widely used in high-yield oil wells, high water-cut wells, deep wells, directional wells and horizontal wells after stopping blowout due to their advantages of high efficiency, large displacement and high head. It is thousands of meters below the ground and has the characteristics of long-term work. If the downhole...
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IPC IPC(8): G08C19/00G08C19/02G01D21/02
CPCG01D21/02G08C19/00G08C19/02
Inventor陈晓晗陈世利曾周末
OwnerTIANJIN UNIV