Nonimplanted system and method for monitoring sand production rate of thick oil well

A monitoring system and technology for sand production, which are used in surveying, earthmoving, wellbore/well components, etc. to facilitate construction and maintenance and improve reliability.

Active Publication Date: 2016-06-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Application Information

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Problems solved by technology

This non-implanted offshore heavy oil well sand monitoring system and method has not been reported yet

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  • Nonimplanted system and method for monitoring sand production rate of thick oil well
  • Nonimplanted system and method for monitoring sand production rate of thick oil well
  • Nonimplanted system and method for monitoring sand production rate of thick oil well

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0047] In the process of heavy oil production, sand-carrying crude oil flows in the oil production pipeline. When flowing through the elbow, due to the sudden change of fluid flow direction, the sand and gravel directly impact on the pipe wall under the action of inertia to generate vibration. The greater the amount of grit, the greater the number of vibrations generated at the pipe wall. The larger the particle size of the gravel, the greater the vibration intensity produced at the pipe wall.

[0048] Such as figure 1As shown, the heavy oil well sand production monitoring system provided by the present invention includes determining the fluid flow direction in the oil production pipeline, 1 is the oil inflow inlet, and 9 is the oil outflow outlet. According to the fluid flow direction, select the installation position 2 of the sensor near one pipe ...

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Abstract

The invention relates to the field of oil-gas well exploitation engineering, in particular to a nonimplanted system for monitoring the sand production rate of a thick oil well. The system comprises a sand production signal sensing device, a sand production signal collecting device and a sand production signal processing and calibration device, wherein the sand production signal sensing device consists of a primary instrument and an ultrasonic flow measurement device which are mounted in a nonimplanted manner; the sand production signal collecting device is a signal collecting and amplifying conversion device; the sand production signal processing and calibration device is a PC-based signal processing module. The invention further discloses a nonimplanted method for monitoring the sand production rate of the thick oil well. The method comprises the following steps: mounting two identical primary instruments on the outer walls of adjacent lower elbow pipelines, and performing oil flow signal noise reduction and sand production signal extraction on a sand-containing crude oil signal through impact signal extraction, featured sand production frequency band filtration, comparison between cross-correlation flow speed calculation and ultrasonic flow speed measurement and the like. The system and the method which are disclosed by the invention are simple in construction; the system is convenient to mount and maintain, and the system and the method are low in cost and high in efficiency and can monitor the sand production rate of the thick oil well in real time.

Description

technical field [0001] The invention relates to the field of oil and gas well development engineering, in particular to a non-implanted heavy oil well sand production monitoring system. Background technique [0002] Heavy oil extraction has become an important part of oil production. Sand production cold recovery technology is generally adopted in the process of heavy oil production. This method can greatly increase the production of oil wells, but it also produces some problems. Excessive sand production will cause damage to oil well production equipment, and at the same time increase the difficulty of ground maintenance, and excessive sand control will seriously affect oil well production. In order to solve this problem, oil well production adopts a moderate sand production method, which limits the sand production within a controllable range, in order to achieve the purpose of reducing crude oil production costs and increasing oil well productivity. In order to realize t...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/14
CPCE21B47/00E21B47/14
Inventor 刘刚王锴刘志国
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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