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

Apparatus for identifying entrance of production logging instrument into lubricator

A logging instrument and blowout preventer technology, which is applied in the direction of electric/magnetic detection, measurement, borehole/well components, etc. for logging records, and can solve the problems of high cost, reduced reliability, inconvenient installation and maintenance, etc. , to achieve the effect of good stability, safe construction and small size

Inactive Publication Date: 2016-03-16
PETROCHINA CO LTD
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in conventional well testing, it is mainly judged by humans whether the instrument enters the lubricator. In some logging projects that use expensive instruments, a trap with a mechanical structure is used to install it between the lubricator and the lubricator, which is costly. High, inconvenient installation and maintenance, long-term use of the disadvantages of reduced reliability

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
  • Apparatus for identifying entrance of production logging instrument into lubricator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The device of the present invention takes the law of electromagnetic induction as the theoretical basis, utilizes the characteristics of the magnetic steel in the magnetic positioning nipple of the production logging instrument, and sets a closed coil at the lubricator nipple to sense when the production logging instrument passes through the lubricator. The magnetic field changes, and then trigger the sound and light alarm circuit to alarm through the micro-current detection switch, so as to realize the function of identifying the instrument entering the nozzle.

[0027] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0028] Please see figure 1 , the whole set of device of the present invention comprises induction coil 1, micro-curren...

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

Disclosed in the invention is an apparatus for identifying entrance of a production logging instrument into a lubricator. The apparatus comprises an induction coil, a micro-current detection switch, and an acousto-optic alarm device. The induction coil senses a magnetic field change that is caused when a production logging instrument enters a lubricator; the micro-current detection switch detects an induction current caused by the magnetic field change and is excited to be turned off to trigger the acousto-optic alarm device to carry out alarming. Therefore, whether the instrument enters the lubricator can be identified accurately; and the apparatus can be used conveniently at field. Moreover, the sensitivity, stability and practicability of the apparatus are high; and even when the production logging instrument passes at a low speed, alarming can be trigged, thereby effectively avoiding an instrument falling risk into the well due to wrong judgment.

Description

technical field [0001] The present application relates to the technical field of oilfield hot-pressed production logging, and in particular to a device for identifying a production logging tool entering a blowout preventer. Background technique [0002] In the dynamic monitoring of water injection wells in oilfields, water absorption profile logging is a widely developed technical means. [0003] This technology requires the installation of a blowout preventer at the wellhead, and the logging instrument is lowered into the target interval in the well through the blowout preventer to record data. [0004] After the test is complete, the instrument needs to be lifted into the lubricator. Since the pressure in the lubricator is high and the logging tools are expensive, it is very important to determine whether the tool has entered the lubricator. [0005] At present, in conventional well testing, it is mainly judged by humans whether the instrument enters the lubricator. In s...

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): G01V3/28E21B47/00
CPCG01V3/28E21B47/00
Inventor 王海龙杨士振杨成李国伟初冬军霍红力张云峰唐秀梅钟彩霞刘元成
Owner PETROCHINA CO LTD
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