Two-dimensional decomposition displaying method for logging information of large-gradient horizontal well

A technology of logging data and display method, applied in the direction of program control device, etc., can solve the problems of not being able to reflect the spatial contact relationship of wellbore trajectory displacement, and not being able to determine the true thickness of the formation

Active Publication Date: 2012-09-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

Compared with vertical wells, highly deviated wells and horizontal wells have larger horizontal displacements, and their measurement depth (that is, inclined depth) is greater than the vertical depth. If the traditional method of drawing logging curves along the inclined depth is used to display the The flat well logging data makes the apparent thickness of the formation in the deviated well much larger than the true thickness, and cannot determine the true thickness of the formation, nor can it reflect the displacement of the wellbore trajectory in the horizontal direction, and intuitively express the spatial contact relationship between the wellbore trajectory and the formation interface

Method used

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  • Two-dimensional decomposition displaying method for logging information of large-gradient horizontal well
  • Two-dimensional decomposition displaying method for logging information of large-gradient horizontal well
  • Two-dimensional decomposition displaying method for logging information of large-gradient horizontal well

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Embodiment Construction

[0032] The two-dimensional decomposition and display method of high-deviation and horizontal well logging data is realized based on a general-purpose computer. The computer should have a display screen, video memory, memory, hard disk, communication network card and Windows operating system.

[0033] 1) In the vertical projection plane, the logging data is decomposed and displayed along the vertical displacement (vertical depth) and horizontal displacement, and the wellbore trajectory and formation model are displayed according to the vertical displacement and horizontal displacement coordinates;

[0034] 2) The entire display window is divided into four sub-windows: sub-window I for displaying the header, sub-window II for displaying logging data in the direction of horizontal displacement, sub-window III for displaying logging data in the direction of vertical displacement, sub-window IV for displaying formation model and well trajectory ;

[0035] 3) When the logging data i...

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Abstract

The invention provides a two-dimensional decomposition displaying method for logging information of a large-gradient horizontal well. The method comprises the following steps: conducting decomposition displaying of the logging information respectively along the vertical displacement (vertical depth) and the horizontal displacement in a vertical projection plane, and displaying well track and stratum model according to coordinates of the vertical displacement and the horizontal displacement. With the adoption of the method, the disadvantage of displaying logging curves along depth sounding of the large-gradient horizontal well can be solved effectively, the maximum displacement of the stratum vertical depth and well track along the horizontal direction can be truly displayed, and the two-dimensional requirements on logging information explanation and geosteering of the large-gradient horizontal well can be met.

Description

technical field [0001] The invention relates to a method for displaying logging data in the field of petroleum exploration and development, in particular to a method for interpreting and displaying wireline logging and logging-while-drilling data for highly deviated and horizontal wells. Background technique [0002] The visual display of petroleum logging data is the fundamental means to intuitively analyze formation lithology, physical properties and fluid properties. Since 1927, the logging data has always displayed the logging value in the form of a curve according to the sounding depth; that is, the wellhead position is specified as the zero point, and the depth and the amplitude of the logging physical quantity at a certain depth point are the orthogonal coordinates, which are determined by the vertical and horizontal ratio transformation Its position on the display medium is connected point by point to form a logging curve. In vertical wells, this display method can ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44
Inventor 邵才瑞张福明陈国兴唐海全
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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