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

A multifunctional inclinometer and a method for judging the relative position of adjacent well casings based on the inclinometer

A technology of relative position and inclinometer, which is applied in the fields of multi-functional inclinometer, special inclinometer design for oil drilling, wellbore anti-collision, and relative position judgment of adjacent well casing, to save time

Active Publication Date: 2019-12-03
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above technical problems, the present invention provides a multi-functional inclinometer with both magnetic and inertial measurement elements, and a method for judging the relative position of casings in adjacent wells based on the inclinometer. Solve the problems of accurate measurement of wellbore trajectory and anti-collision warning at the same time in the interfering well section

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
  • A multifunctional inclinometer and a method for judging the relative position of adjacent well casings based on the inclinometer
  • A multifunctional inclinometer and a method for judging the relative position of adjacent well casings based on the inclinometer
  • A multifunctional inclinometer and a method for judging the relative position of adjacent well casings based on the inclinometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Based on magnetic inclinometers (such as figure 1 shown), gyro inclinometer (such as figure 2 The basic structure and working principle, as well as the research results of the magnetic field distribution law of the casing string itself, the invention provides a multifunctional inclinometer integrating a fluxgate sensor and a gyro sensor, and a multifunctional inclinometer based on the inclinometer The method for judging the relative position of the casing of the offset well can simultaneously solve the problems of accurate measurement of the wellbore trajectory and anti-collision early warning in the magnetic interference well section of the casing of the offset well.

[0034] like image 3 As shown, a multifunctional inclinometer with both magnetic and inertial measurement elements, including a measurement head, on which an x-axis fluxgate sensor, a y-axis fluxgate sensor, and a z-axis fluxgate sensor are sequentially integrated , x-axis accelerometer, y-axis accele...

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 multifunctional inclinometer and a method for judging the relative position of casings in adjacent wells based on the inclinometer, and belongs to the technical fields of special inclinometer design for oil drilling and borehole anti-collision. The multifunctional inclinometer integrates the fluxgate sensor into the existing gyro inclinometer for the first time; the method for judging the relative position of the adjacent well casing based on the inclinometer mainly includes adjacent well casing magnetic interference and borehole collision Steps of rapid risk identification and relative position inversion of casings in adjacent wells. The present invention provides for the first time a practical method for inverting the relative distance and orientation of the casing in adjacent wells by using the magnetic tool face angle given by the gyro sensor, the magnetic field strength and the magnetic field inclination angle measured by the fluxgate sensor. The section can solve problems such as accurate wellbore trajectory measurement, wellbore collision risk identification, and relative position inversion of adjacent well casings at the same time. Identify wellbore collision risks.

Description

technical field [0001] The invention relates to the field of oil drilling engineering, in particular to the design of a special inclinometer for oil drilling and the anti-collision technology of wellbore, in particular to a multifunctional inclinometer with both magnetic and inertial measurement elements, and a multifunctional inclinometer based on the multifunctional The method of judging the relative position of the casing in the offset well by the inclinometer. Background technique [0002] In the field of oil drilling, magnetic inclinometers are usually used to measure wellbore trajectory parameters (well inclination azimuth angle AZI) and deflection tool attitude parameters (magnetic tool face angle MTF). In order to measure the medium and the magnetic north line as the reference, it can only work normally in the normal geomagnetic field environment. At present, more and more infill wells and adjustment wells are being drilled, the scale of new cluster well groups is g...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/022E21B47/09
CPCE21B47/022E21B47/09
Inventor 史玉才杨卫星管志川廖华林刘永旺范致斌付成林滕志想
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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