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Continental clastic rock four-phase-in-one depositional microfacies discrimination method

A technology of sedimentary microfacies and discrimination method, which is applied in the field of "four-phase integration" sedimentary microfacies discrimination and sedimentary microfacies discrimination of continental clastic rocks, which can solve the problems of difficult comparison, increased uncertainty, rough research results, etc.

Inactive Publication Date: 2018-08-07
DAGANG OIL FIELD OF CNPC
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Problems solved by technology

The conventional single use of seismic, logging and core data for sedimentary microfacies analysis has certain limitations: seismic data has great advantages for carrying out regional research, but because its vertical and horizontal resolution is smaller than that of the target body, the research results are relatively rough; It is difficult to correlate between wells within a short-term cycle of logging data; while the sedimentary structures described in core data may appear in different sedimentary microfacies, increasing uncertainty

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  • Continental clastic rock four-phase-in-one depositional microfacies discrimination method
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  • Continental clastic rock four-phase-in-one depositional microfacies discrimination method

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Embodiment Construction

[0092] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0093] see Figure 1-8 As shown, a "four-phase-in-one" sedimentary microfacies discrimination method of continental clastic rock is characterized in that it includes the following steps:

[0094] Step A, using seismic data to determine the formation reflection type;

[0095] Step B, using the spontaneous potential curve to calculate the shape of the logging curve;

[0096] Step C, using core data to analyze the bedding structure;

[0097] Step D, using thin...

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Abstract

The invention discloses a continental clastic rock four-phase-in-one depositional microfacies discrimination method comprising the following steps: A, using earthquake data to determine a stratum reflection structure; B, using a nature potential curve to calculate logging curve forms; C, using rock core data to analyze bedding structures; D, using lamina data to determine a granularity combinationform; E, combining earthquake, logging, rock core and lamina information so as to identify depositional microfacies. The method can combine the earthquake, logging, rock core and lamina information to identify depositional microfacies; the method gradually increase the geology resolutions from macroscopic to microscopic, thus making up limits of using single data to identify depositional microfacies, more accurately identify the depositional microfacies, and providing technical supports for oil gas exploration.

Description

technical field [0001] The invention relates to a method for discriminating sedimentary microfacies, in particular to a method for discriminating "four-phase-in-one" sedimentary microfacies of continental clastic rocks, and belongs to the technical field of petroleum exploration applications. Background technique [0002] With the deepening of exploration, identification of sedimentary microfacies has become one of the key steps in the exploration of lithologic reservoirs. The conventional single use of seismic, logging and core data for sedimentary microfacies analysis has certain limitations: seismic data has great advantages for carrying out regional research, but because its vertical and horizontal resolution is smaller than that of the target body, the research results are relatively rough; It is difficult to correlate between wells within a short-term cycle of logging data; however, the sedimentary structures described in core data may appear in different sedimentary m...

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 蒲秀刚姜文亚肖敦清张伟韩文中时战楠杨飞孙超囡柳飒赵敏汪晓敏刘次源
Owner DAGANG OIL FIELD OF CNPC
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