Determination index based low resistivity oil zone recognition method and device

An identification method and identification device technology, which are applied in the fields of earth-moving drilling, wellbore/well components, etc., can solve the problems of different application conditions, uncertainty and unrepresented probability of judgment, and achieve increased accuracy and large actual production. Meaning, the effect of subjective influence reduction

Active Publication Date: 2017-01-04
PETROCHINA CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that various existing low-resistivity oil layer identification methods have different applicable conditions, lack a means of comprehensively utilizing multiple methods for judgment, and the existing methods do not reflect the uncertainty and judgment probability of the j

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  • Determination index based low resistivity oil zone recognition method and device
  • Determination index based low resistivity oil zone recognition method and device
  • Determination index based low resistivity oil zone recognition method and device

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[0060] 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.

[0061] figure 1 It is a method flowchart of an embodiment of a method for identifying low-resistance oil layers based on a judgment index in the present invention. Although the present invention provides the method operation steps or device structures as shown in the following embodiments or accompanying drawings, more or fewer operation...

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Abstract

The invention provides a determination index based low resistivity oil zone recognition method and device. The determination index based low resistivity oil zone recognition method comprises the steps that a low resistivity oil zone of a target exploration region is defined; data information of the target exploration region is obtained to find out the confirmed low resistivity oil zone; the causes of the low resistivity oil zone are analyzed to determine a low resistivity oil zone recognition method suitable for the target exploration region, the experience judging indexes corresponding to the low resistivity oil zone recognition method are calculated, and the distribution range of the experience judging indexes is obtained; a suspended low resistivity oil zone of the target exploration region is looked up, and the target judging indexes of the suspended low resistivity oil zone are calculated; and a recognition result of the suspended low resistivity oil zone is determined according to the distribution situation of the target judging indexes in the distribution range. By utilizing the embodiments of the method, multiple oil zone recognition methods can be comprehensively considered, the uncertainty and correct judgement probability in the judging process can be embodied in a quantitative mode, the subjective influence of artificial recognition can be reduced, and the recognition correction rate can be improved.

Description

technical field [0001] The application belongs to the field of reservoir logging evaluation in the exploration and development of clastic rock oil and gas reservoirs, and in particular relates to a low-resistivity oil layer identification method and device based on a judgment index. Background technique [0002] Compared with normal oil and gas layers, the resistivity of low-resistivity oil and gas layers is lower, even lower than that of water layers. It is more difficult to identify, and the accuracy is usually not high. Oil well stimulation measures based on this often have missing oil layers and replenished water layers. It will cause great obstacles to the implementation of later measures, and it will also be difficult to meet the reserve base and technical requirements for strata succession. With the continuous development of oil and gas, most oil fields in my country have entered the middle and late stages of development, and the unidentified low-resistivity oil layer...

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Application Information

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IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 韩如冰田昌炳李顺明雷诚何辉蔚涛杜宜静
Owner PETROCHINA CO LTD
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