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Method and apparatus for determining position in a pipe

A technology of pipe and identification device, applied in the direction of measuring device, drill pipe, casing, etc., can solve the problem of indistinguishable

Inactive Publication Date: 2012-04-18
MARATHON OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As with other devices using electromagnetic principles and devices discussed above, the British Gas device cannot differentiate between electromagnetic anomalies produced, only counts the total number of electromagnetic anomalies along the length of the pipe and provides anomaly generator and detection distance measurement based on the distance between

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  • Method and apparatus for determining position in a pipe
  • Method and apparatus for determining position in a pipe
  • Method and apparatus for determining position in a pipe

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Embodiment Construction

[0075] The present invention pertains to methods and methods for determining the location in oil, gas and other drilled wells having connected well casings, and pipes or the like having pipelines in staggered regions, and other non-perpendicular gas, oil, water and other fluid wells and pipelines device. The present invention can provide the determination of the precise location of a well or pipe tool within a well casing or pipe, and the associated characteristics of the well or pipe at the location of the tool.

[0076] figure 1 Provides a perspective cross-sectional view of a well casing or tubing 10 formed from a plurality of sections 12 with a joint 14 between each section 12 having an externally threaded connection end 16 and an internally threaded joint with the two ends 16 secured together. Matching sleeve 18. Such joints 14 typically include at least one small gap 20 between each connected end 16 of each well casing or tubular section 12, within which a resilient O-...

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Abstract

A method and apparatus for determining position in a pipe provides for the precise determination of location and associated characteristics of each pipe joint (14) of a well, cross country pipeline or other fluid transmission line. The system includes a passive or active radio identification device (30) at each joint in the pipe or casing string. A pipeline tool (24) includes a radio transmitter and receiver (28) with the transmitter transmitting on a frequency selected for resonating the identification devices. The resonant response of each device is detected by a receiver in the pipeline tool, with the response transmitted to the surface via the wireline to which the tool is connected.

Description

[0001] This divisional application is a divisional application based on the Chinese patent application with application number 00801574.0, application date of April 4, 2000, and title of the invention: method and device for determining the position in a pipe. [0002] Reference to related patent applications [0003] This application claims the benefit of US Provisional Patent Application Serial No. 60 / 098284, filed August 28, 1998. technical field [0004] This invention relates to devices for detecting intermediate points in wells, gas and oil pipelines and the like, and more particularly to systems employing radio frequency responsive devices installed at various points in the well or pipeline. A probe is inserted into the pipe and detects a response device mounted to transmit position or depth and other information back to a station at the surface or along the pipe. The present invention can provide information storage to be downloaded when the device is retrieved from th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/09E21B33/00E21B17/00G01V3/30G01V15/00
CPCG01V3/30E21B47/0905E21B17/006G01V15/00G06Q20/367E21B47/092
Inventor 约瑟夫·齐罗尔夫
Owner MARATHON OIL CO