Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Corrugated diaphragm type pipe external pressure sensor, oil-water well casing external pressure monitoring device and method

The technology of corrugated diaphragm and monitoring device is applied in the direction of fluid pressure measurement of elastic deformation gauge and fluid pressure measurement of optical method, which can solve the problems of real-time online monitoring, etc., and achieves simple structure, high sensitivity coefficient, and easy The effect of manufacture

Inactive Publication Date: 2011-07-13
HARBIN INST OF TECH
View PDF5 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the pressure monitoring of the existing oil-water well casing can only be carried out at a single point in the pipe and cannot be monitored on-line in real time, and provides a corrugated diaphragm type external pressure sensor and oil-water well casing external pressure monitoring Device and method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrugated diaphragm type pipe external pressure sensor, oil-water well casing external pressure monitoring device and method
  • Corrugated diaphragm type pipe external pressure sensor, oil-water well casing external pressure monitoring device and method
  • Corrugated diaphragm type pipe external pressure sensor, oil-water well casing external pressure monitoring device and method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Specific implementation mode one: the following combination figure 2 Describe this embodiment, the corrugated diaphragm type external pipe pressure sensor described in this embodiment is characterized in that: the corrugated diaphragm type external pipe pressure sensor 4 includes a corrugated diaphragm 4-1, a pressure contact 4-2 , FRP smart rib 4-3, fiber Bragg grating 4-4, optical fiber 4-5, base 4-6 and expansion bolt 4-7,

[0020] An optical fiber 4-5 and a fiber Bragg grating 4-4 ​​are arranged in the central cavity of the base 4-6, the fiber Bragg grating 4-4 ​​is located at the center of the central cavity, and the two ends of the fiber Bragg grating 4-4 ​​are respectively arranged The optical fiber 4-5, the outer circular surface of the optical fiber 4-5 and the fiber Bragg grating 4-4 ​​are encapsulated with FRP smart rib 4-3, and the FRP smart rib 4-3 is fixed at both ends of the base 4-6, and the base The two ends of 4-6 clamp the smart tendons 4-3 through ...

specific Embodiment approach 2

[0024] Specific implementation mode two: the following combination figure 2 Describe this embodiment. The difference between this embodiment and Embodiment 1 is that the corrugated diaphragm type external pipe pressure sensor 4 also includes a fastening nut 4-8 and a rubber gasket 4-9. The corrugated diaphragm 4-1 is fixed at the port of the contact hole through a fastening nut 4-8, and a rubber gasket 4-9 is arranged between the corrugated diaphragm 4-1 and the fastening nut 4-8. Other components and connections are the same as those in Embodiment 1.

[0025] The rubber gaskets 4-9 described in this embodiment are standard parts.

[0026] The corrugated diaphragm 4-1 is fixed by the fastening nut 4-8 and the rubber gasket 4-9, which has two functions: one is that it can seal the corrugated diaphragm 4-1, and it is used in the downhole environment When the downhole oil is isolated from the corrugated diaphragm type external pressure sensor 4, a pressure difference is genera...

specific Embodiment approach 3

[0027] Specific implementation mode three: the following combination figure 2 Describe this embodiment, this embodiment is a further description of Embodiment 1 or 2, a groove is provided in the central cavity of the base 4-6, the groove is opposite to the contact hole, and the The axial length of the groove along the optical fiber 4-5 is greater than the axial length of the contact hole along the optical fiber 4-5. Other compositions and connections are the same as those in the first or second embodiment.

[0028] The structural features described in this embodiment make the base 4-6 have strong durability, good reliability and stable performance, which can ensure the detection accuracy.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Linear expansion coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a corrugated diaphragm type pipe external pressure sensor, an oil-water well casing external pressure monitoring device and an oil-water well casing external pressure monitoring method, which belong to the technical field of fiber optical sensing and aim to solve the problems that the conventional pressure monitoring of an oil-water well casing only can be performed at a single point in the casing and that real-time online monitoring cannot be performed. An optical fiber and a fiber Bragg grating are arranged in a central cavity of a corrugated diaphragm type pipe external pressure sensor substrate, and are packaged with fiber reinforced plastic intellectual ribs. The two ends of the substrate fixedly clamp the intellectual ribs by expansion bolts respectively. A contact terminal hole is reserved in the center of the sidewall of the substrate. A pressure contact terminal is arranged in the contact hole. Two contacts of the pressure contact terminal are connected to the FRP intellectual ribs in a contacting way, and longitudinally stridden at the two ends of the fiber Bragg grating. A gap between the internal corrugated surface of a corrugated diaphragm at an orifice of the contact terminal hole and the surface of the outer wall of the pressure contact terminal is equal. The corrugated diaphragm type pipe external pressure sensor is adopted in both the oil-water well casing external pressure monitoring device and the oil-water well casing external pressure monitoring method. The corrugated diaphragm type pipe external pressure sensor, the oil-water well casing external pressure monitoring device and the oil-water well casing external pressure monitoring method are used for pressure monitoring.

Description

technical field [0001] The invention relates to a corrugated diaphragm type external pressure sensor, an oil-water well casing external pressure monitoring device and a method, and belongs to the technical field of optical fiber sensing. Background technique [0002] Oil and water well casing damage will not only bring economic losses to the oil field, but also adversely affect the application of oil field development plans and enhanced recovery measures, thus directly affecting oil extraction and oil field development. At present, oil The problem of water well casing damage has become an urgent problem to be solved in my country's oilfields. In order to prevent and slow down the damage of oil and water well casing in advance, it is of great significance to monitor the pressure outside the casing. [0003] At present, most of the downhole pressure tests of oil and water wells adopt mechanical and electronic storage test methods. This method needs to suspend the relevant detec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01L11/02G01L7/06
Inventor 张广玉董慧娟何俊潘洪亮程国娟刑洋
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com