A temperature compensation method for a dual induction eight lateral logging tool and a coil system of a dual induction eight lateral logging tool

A technology of lateral logging and logging tools, which is applied in construction and other directions, can solve problems such as low measurement accuracy, distortion of logging curves, and excessive experience components, and achieve the effects of convenient operation and high temperature compensation accuracy

Active Publication Date: 2017-10-20
XIAN SITAN INSTR
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, nickel wire and constantan wire are used for temperature compensation in the coil probe part of the dual-induction eight-side logging tool. The temperature coefficient α of nickel wire is large, so its sensitivity is high
Because the manufacturing process of nickel wire is more complicated and it is difficult to obtain nickel wire with the same α, its measurement accuracy is low, and it is difficult to formulate standards. Most of the current applications have too much experience (Table 1 is a comparison of the parameters of platinum resistance and nickel resistance. )
In addition, when it is disturbed by the outside world, its resistance value will change, so it is reflected on the logging curve that a certain corner or section is particularly sharp, and the logging curve is locally distorted

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 temperature compensation method for a dual induction eight lateral logging tool and a coil system of a dual induction eight lateral logging tool
  • A temperature compensation method for a dual induction eight lateral logging tool and a coil system of a dual induction eight lateral logging tool
  • A temperature compensation method for a dual induction eight lateral logging tool and a coil system of a dual induction eight lateral logging tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The object of the present invention is to provide a new probe temperature compensation method that can accurately respond to the temperature change of the probe and is easy to operate, aiming at the defects existing in the existing dual-induction eight-lateral instrument. And the method does not need to change the original instrument structure.

[0019] The solution is to place a high-precision temperature sensor in the middle of the sensing probe, connect the sensor to the feedback terminal of the constant voltage circuit in the launching sub, perform A / D sampling on the output of the constant voltage circuit, and transmit the sampled value to the CPU . The CPU calculates the sampling signal to obtain the real-time temperature of the sensing probe. Finally, the collected real-time logging data and the data variation caused by temperature at the same time are added together and transmitted to the ground system to obtain the final logging data.

[0020] Fix a temperatu...

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 relates to a temperature compensation method for a dual-induction eight-side lateral logging tool and a coil system of a double-induction eight-side lateral logging tool. Temperature Sensor. The invention provides a temperature compensation method for coil systems of a double-induction eight-side logging tool that can accurately respond to probe temperature changes, has high precision, and is easy to operate.

Description

technical field [0001] The invention belongs to the field of well logging, and relates to a dual-induction eight-side logging tool and a temperature compensation method for a coil system of a double-induction eight-side logging tool. Background technique [0002] For the induction logging tool, the coil probe is its core, and the detection performance of the coil system directly determines the performance of the tool; because of the special oil logging environment, the impact of environmental parameters on the measurement effect is obvious. For the logging tool, the temperature has the greatest influence on it, so the temperature compensation of the induction probe should be made during the production of the tool, so that more accurate formation information can be obtained. At present, nickel wire and constantan wire are used for temperature compensation in the coil probe part of the dual-induction eight-side logging tool. The temperature coefficient α of nickel wire is rel...

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): E21B47/07
Inventor 袁阿明
Owner XIAN SITAN INSTR
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