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Lake basin material source and sand body migration direction identification method and device

A technology of migration direction and identification method, applied in the field of petroleum exploration, can solve the problems such as the inability to accurately identify the provenance and the migration direction of the sand body, and the poor identification effect.

Pending Publication Date: 2021-04-02
中国石油天然气股份有限公司长庆油田分公司勘探开发研究院 +1
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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method and device for identifying the provenance of lake basins and the migration direction of sand bodies, which is used to solve the problem of poor identification of continental lake basins full of sand in the prior art and the inability to accurately determine the point Problems of identifying provenance and migration direction of sand bodies

Method used

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  • Lake basin material source and sand body migration direction identification method and device
  • Lake basin material source and sand body migration direction identification method and device
  • Lake basin material source and sand body migration direction identification method and device

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Embodiment Construction

[0044] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the implementation manners of the present invention, and are not intended to limit the implementation manners of the present invention.

[0045] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the implementation of the present application, the directional indications are only used to explain the position in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second" and so on are ...

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Abstract

The invention discloses a lake basin material source and sand body migration direction identification method and device. The identification method comprises the following steps of: establishing a small-layer or single-layer comparison grillwork of a target interval of a research area; dividing sandstone of the target interval of the research area into good sandstone and poor sandstone by utilizinga natural gamma curve; drawing a good sandstone contour map and a sand-land ratio contour map of the target interval of the research area by utilizing the thickness data of the good sandstone; and utilizing the thickness contour map of good sandstone and the sand-land ratio contour map to analyze the material source of the lake basin and the migration direction of the sand body. According to themethod, the false phenomena that the whole basin contains sand and the material sources are connected due to longitudinal superposition of the sand bodies without distinguishing the sand bodies in thepast are eliminated, so that the identification of the material sources and the migration direction of the sand bodies is more intuitive and precise, and more information is reflected.

Description

technical field [0001] The invention relates to the field of petroleum exploration, in particular to a method and device for identifying the material source of a lake basin and the migration direction of sand bodies. Background technique [0002] In recent years, scholars have generally used data such as seismic, well logging, and geochemical tests of related rock samples, combined with core sedimentary facies analysis, sandstone thickness maps, and sand-to-ground ratio maps of the target interval to determine the provenance direction. Although these methods can identify the main provenance of the basin, they all have certain shortcomings and limitations. Seismic slices combined with well logging sedimentary facies analysis to determine the provenance has high requirements on the quality of seismic data, and the vertical resolution of seismic data is low, and the application effect is extremely poor for thin target layers, especially sand-mud inter-sedimentary strata ; Geoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V5/06
CPCG01V5/06Y02A10/40
Inventor 郭芪恒史书婷昝灵金振奎王金艺任亦霖王凌
Owner 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院
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