Method for inverting stratum parameters by array induction logging data and device thereof

An array sensing and logging data technology, applied in the field of formation parameter inversion and geophysical parameter inversion, can solve problems such as difficulty in practical application and unreasonable results, and achieve the effect of reasonable inversion results and improved identification ability.

Active Publication Date: 2012-11-21
PETROCHINA CO LTD
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Problems solved by technology

[0003] However, the traditional inversion methods have been difficult to be practical because they are all purely mathematical methods, as long as the error between the simulated logging curve and the measured curve is less

Method used

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  • Method for inverting stratum parameters by array induction logging data and device thereof
  • Method for inverting stratum parameters by array induction logging data and device thereof
  • Method for inverting stratum parameters by array induction logging data and device thereof

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specific Embodiment

[0073] Figure 7 In order to use the method and device for inversion of formation parameters using array induction logging data of the present invention, the interactive inversion result map of array induction logging generated by inversion of formation parameters is performed.

[0074] In this specific embodiment, the commonly used high-resolution array induction logging tool (HDIL) logging data is selected as the processing object. exist Figure 7 middle:

[0075] The first is the caliper curve (CAL), spontaneous potential curve (SP) and natural gamma ray curve (GR). Among them, curve ① represents the borehole diameter curve, curve ② represents the spontaneous potential curve, and curve ③ represents the natural gamma ray curve.

[0076] The second track is the 0.6m resolution array curve after HDIL synthetic focus, M2R1, M2R2, M2R3, M2R6, M2R9, M2RX respectively represent the detection depth of 0.254m, 0.508m, 0.762m, 1.522m, 2.286m and 3.048m Logging curve. Among them,...

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Abstract

The invention discloses a method for inverting stratum parameters by array induction logging data, which comprises the following steps of: obtaining array induction logging data and auxiliary logging curve data; layering a measured well section according to the array induction logging data and the auxiliary logging curve data, preliminarily inverting an array induction logging curve by a geometric factor method, and generating the initial original state stratum resistivity, the invaded zone resistivity and the invaded radius value of a corresponding layer; generating an array induction simulation response curve according to the initial original state stratum resistivity, the initial invaded zone resistivity and the initial invaded radius value of the corresponding layer; and judging whether the array induction simulation response curve is accordant with an array induction original response curve or not, if not, modifying the initial original state stratum resistivity, the invaded zone resistivity and the invaded radius value through the interactive inversion in combination with the geological characteristics of the corresponding layer according to the array induction original response curve, and outputting the final original state stratum resistivity, the final invaded zone resistivity and the final invaded radius value.

Description

technical field [0001] The invention relates to the field of petroleum logging, in particular to a method and device for inversion of formation parameters using array induction logging data, specifically a method and device for the original response and synthetic A method and device for inversion of geophysical parameters by combining focused logging curves and other logging information. Background technique [0002] In the reservoir section, due to the influence of mud invasion, wellbore, surrounding rock, etc., the measured array induction resistivity deviates from the real resistivity, which reduces the ability to identify oil and water layers through the resistivity curve, and the calculated oil saturation The degree of error is large. Therefore, it is necessary to use the inversion method to restore the real formation surface. [0003] However, the traditional inversion methods have been difficult to be practical because they are all purely mathematical methods, as lo...

Claims

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Application Information

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IPC IPC(8): G01V11/00
Inventor 王昌学胡法龙李长喜杜宝会李霞秋英淑王环宋连腾程相志张莉
Owner PETROCHINA CO LTD
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