Multilevel hybrid filtering circuit and method for under-well engineering parameter measurement signals

A filter circuit and signal measurement technology, which is applied to electrical components, multi-terminal pair networks, multi-terminal pair networks, etc., can solve the problems of small signal amplitude, large noise, frame loss, etc., and achieve the effect of improving accuracy

Pending Publication Date: 2017-08-01
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the impact vibration between the drill bit and the bottom of the well, the collision between the drill string and the well wall, the existence of various drilling fluid systems and high temperature and high pressure environments during the drilling process, the collected signal amplitude is

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
  • Multilevel hybrid filtering circuit and method for under-well engineering parameter measurement signals
  • Multilevel hybrid filtering circuit and method for under-well engineering parameter measurement signals
  • Multilevel hybrid filtering circuit and method for under-well engineering parameter measurement signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The multi-stage hybrid filter circuit and method for downhole engineering parameter measurement signals provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] Such as figure 1As shown, the multi-stage hybrid filter circuit for downhole engineering parameter measurement signals provided by the present invention includes:

[0022] The downhole measurement unit 100, the hybrid filter unit 200, the post-processing unit 300, and the power management unit 400, wherein: the downhole measurement unit 100 is connected to the post-processing unit 300 through the hybrid filter unit 200, and the power management unit 400 is connected to the downhole measurement unit 100, the hybrid The filtering unit 200 and the post-processing ...

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

No PUM Login to view more

Abstract

The invention discloses a multilevel hybrid filtering circuit and method for under-well engineering parameter measurement signals. The circuit comprises an under-well measurement unit, a hybrid filtering unit, a post-processing unit and a power management unit. The under-well measurement unit is connected with the post-processing unit through the hybrid filtering unit. The power management unit is connected with the under-well measurement unit, the hybrid filtering unit and the post-processing unit. According to the multilevel hybrid filtering circuit and method for the under-well engineering parameter measurement signals provided by the invention, high frequencies and strong noises existing in weak small signals are filtered in a passive filtering mode; the signals are amplified according to certain multiples; precise band filtering is carried out through adoption of a second-order active filtering network; the signals are denoised in a passive-amplification-active hybrid filtering mode. The later signal processing, analysis and decision are carried out successfully. Compared with a general filtering mode, the circuit and the method have the advantage of improving the precision, accuracy and interference resistance of the under-well measurement data.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas drilling, and in particular relates to a multi-stage hybrid filter circuit and method for downhole engineering parameter measurement signals. Background technique [0002] In the field of petroleum drilling, intelligent drilling tools measure and process engineering parameters such as bottomhole pressure, annular pressure, drilling pressure, temperature, and torque in real time through downhole measurement units, and are used for downhole working condition analysis, tool failure analysis, and optimized drilling. tool combination to guide normal drilling. Due to the impact vibration between the drill bit and the bottom of the well, the collision between the drill string and the well wall, the existence of various drilling fluid systems and high temperature and high pressure environments during the drilling process, the collected signal amplitude is small and contains relatively la...

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): H03H7/01H03H11/38H03F3/68
CPCH03F3/68H03H7/01H03H11/38Y02E40/40
Inventor 李绍辉陈世春冯强白大鹏
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap