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System and method for positioning depth of well drilling tracer through magnetic signals

A tracer and magnetic signal technology, which is used in earth-moving drilling, wellbore/well components, measurement, etc., and can solve the problems of low positioning accuracy and complex calculation process.

Active Publication Date: 2017-11-21
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can better solve the problem of low positioning accuracy, but this method needs to accurately grasp the structural parameters of the wellbore, and the calculation process is complicated

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  • System and method for positioning depth of well drilling tracer through magnetic signals
  • System and method for positioning depth of well drilling tracer through magnetic signals
  • System and method for positioning depth of well drilling tracer through magnetic signals

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Embodiment Construction

[0043] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0044] The invention provides a system and method for quickly and accurately locating the depth of a tracer through magnetic signal detection, so as to accurately evaluate the wellbore temperature and pressure.

[0045] The system for locating the depth of a well tracer using magnetic signals includes a plurality of magnetic markers, a magnetic sensor and a controller. Among them, a plurality of magnetic mar...

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Abstract

The invention discloses a system and method for positioning the depth of a well drilling tracer through magnetic signals. The system comprises a plurality of magnetic marks, a magnetic sensor and a controller, wherein the magnetic marks are arranged on a drill column with preset spacing distances and used for generating the magnetic field signals, the magnetic sensor is arranged inside the tracer and used for sensing the magnetic field signals and generating level signals corresponding to a magnetic field, and the controller is arranged inside the tracer and used for collecting the level signals so that the depth of the tracer in a well can be obtained through calculation according to the number and collecting time of the level signals and the spacing distances of the magnetic marks. According to the system and method for positioning the depth of the well drilling tracer through the magnetic signals, the position of the tracer in a wellbore can be obtained, and therefore the temperature and pressure inside the wellbore are accurately evaluated.

Description

technical field [0001] The invention relates to the technical field of geological exploration and development, in particular to a system and method for using magnetic signals to locate the depth of a drilling tracer. Background technique [0002] Temperature and pressure are two important basic data in drilling engineering. Real-time measurement of the temperature and pressure of the whole wellbore is of great significance to the speed and efficiency of drilling engineering and safe drilling. [0003] The microchip tracer is a new type of measurement-while-drilling instrument with a spherical structure and a diameter of less than 10mm, which can measure the temperature and pressure of the wellbore in the drilling fluid circulation channel. In contrast to existing measurement-while-drilling (MWD) devices, microchip tracers measure temperature and pressure throughout the wellbore, including at the drill bit. [0004] The working principle of the microchip tracer is: it is inj...

Claims

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Application Information

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IPC IPC(8): E21B47/06
CPCE21B47/06
Inventor 曾义金赵金海朱祖扬张卫陆黄生邓大伟李三国李继博廖东良
Owner CHINA PETROLEUM & CHEM CORP
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