Method and device for determining reservoir lithology

A determination method and technology of lithology, applied in the field of determination of reservoir lithology, can solve the problems of poor accuracy and low efficiency of determining lithology, and achieve the effect of accurate identification and precise reservoir lithology

Active Publication Date: 2018-06-05
PETROCHINA CO LTD
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  • Application Information

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Problems solved by technology

[0005] The implementation mode of the present application provides a method and device for determining the lithology of the reservoir, so as to solve the technical problems of low efficiency and poor accuracy in determining the lithology existing in the existing methods, and achieve efficient and accurate identification of the lithology of the reservoir technical effect

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  • Method and device for determining reservoir lithology
  • Method and device for determining reservoir lithology
  • Method and device for determining reservoir lithology

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Embodiment Construction

[0053]In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0054] Considering that the determination method of existing reservoir lithology is often simply to identify the lithology in the coring well or imaging logging data based on the coring well data and imaging logging data, it is impossible to identify the lithology in other logging or other areas in the work area. Reservoir lithology is det...

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Abstract

The embodiment of the application provide a method and device for determining the reservoir lithology, wherein the method includes: acquiring a core sample and logging data in a target area, wherein the logging data includes the logging data of a first type of wells and the logging data of a second type of wells, the first type of wells includes a coring well, the second type of wells include single wells other than coring well; dividing the first type of wells into to-be-recognized rock types according to core sample; according to the to-be-recognized rock types of the first type of wells andthe logging data of the first type of wells, establishing a reconstruction indicative curve; according to the reconstruction indicative curve and the logging data of the second type of wells, the lithology of the second type of wells. The method uses the coring well as a reference, first determines the rock type of the coring well, establishes the reconstruction indicative curve according to thecharacteristics of different rock types to identify the specific lithology of other wells, thereby solving a technical problem that a conventional method is in low efficiency of determining the lithology and poor in accuracy.

Description

technical field [0001] The present application relates to the technical field of oil and gas exploration and development, in particular to a method and device for determining reservoir lithology. Background technique [0002] In the process of oil and gas exploration and development, it is often necessary to identify the lithology of the reservoir in the work area first, and then the corresponding construction and development can be carried out according to the determined lithology of the reservoir. [0003] At present, in order to determine the reservoir lithology, the reservoir lithology is mostly identified through direct identification of core and imaging logging or indirect identification of non-imaging logging curves. Among them, the above-mentioned method of identifying the lithology of the reservoir through the direct identification of the core and imaging logging may specifically include: detailed observation and description of the lithology of the coring well, comb...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/04E21B49/00
CPCE21B49/00G06Q10/06315G06Q50/04Y02P90/30
Inventor 秦国省邹存友赵亮匡明田雅洁
Owner PETROCHINA CO LTD
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