A method for counting cuttings content in glutenite reservoirs

A sandy conglomerate and cuttings technology, which is applied in the field of quantitative statistics of cuttings content in glutenite reservoirs, can solve the problems of cuttings content error, neglect of quantitative statistics, etc., and achieve the effect of scientific data support, comprehensive and accurate statistical range

Active Publication Date: 2021-08-31
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] In the prior art, when studying the petrological characteristics of glutenite reservoirs, the quantitative statistics of cuttings are often only carried out quantitative statistics on different types of cuttings from the scale of thin slices under the microscope, while ignoring the macroscopic analysis of large-scale gravels. Quantitative statistics of small cuttings, so that there is an error in the content of cuttings

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  • A method for counting cuttings content in glutenite reservoirs
  • A method for counting cuttings content in glutenite reservoirs
  • A method for counting cuttings content in glutenite reservoirs

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[0029] All the features disclosed in this specification, except mutually exclusive features and / or steps, can be combined in any way.

[0030] A new method for counting debris content in glutenite reservoirs:

[0031] Firstly, the core samples were selected from Well Yan 22-22 in the northern zone of Dongying Sag, and the selected depth range was 3688.00m-3695.50m in the upper sub-member of the fourth member of the Shahejie Formation, and the specific depth points were 3691.25m and 3692.45m. rock. Core samples in the Yong'an block were taken from Well Yong 559, and the specific core locations of Well Yong 559 were 3225.8m, 3226m and 3226.45m in the upper Sha4 sub-member.

[0032] Considering the accuracy of identification of gravel content, for the core sample depth points, a depth section with an interval of about 1m between the two depth points was selected. In fact, there are two depth sections of 3691m-3692m and 3692m-3693m, and then from the collected imaging logs, the ...

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Abstract

The invention relates to the field of quantitative characterization of reservoir petrology in the study of glutenite reservoirs, in particular to a method for counting cuttings content in glutenite reservoirs, comprising the following steps: intercepting imaging well logs according to the research depth; Process the well log to obtain the area percentage of the total content of gravel components; select the core sample to obtain the area content percentage of various gravel-level cuttings in the core section sample; based on the area content percentage and total content of gravel components The final percentage content of each type of gravel-level cuttings is obtained by area percentage; the content of various types of sand-level cuttings is obtained for the core samples corresponding to the research depth; the final percentage content of various gravel-level cuttings and the same type of sand-level cuttings The content is added to obtain the actual content percentage of various cuttings at the research depth; the present invention combines the content of cuttings of sand size and the content of cuttings of gravel size to accurately characterize the content of different types of cuttings in glutenite reservoirs.

Description

technical field [0001] The invention relates to the field of quantitative characterization of reservoir petrology in the study of glutenite reservoirs, in particular to a method for quantitative statistics of cuttings content in glutenite reservoirs. Background technique [0002] Cuttings are fragments of the parent rock, which are mineral aggregates that maintain the structure of the parent rock. The sedimentary facies of the glutenite reservoir changes rapidly, the reservoir heterogeneity is strong, and the rock components are relatively complex. In terms of cuttings types, it includes both gravel-sized cuttings and sand-sized cuttings. Quantitative statistics of cuttings play a positive role in judging the maturity of reservoir composition and the properties of parent rock in provenance areas, as well as in deeper research, including the main controlling factors affecting reservoir physical properties and the formation and evolution mechanism of reservoirs. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02
CPCG01N15/0227G01V1/50G01V1/46G01V2210/64
Inventor 曲希玉陈思芮邱隆伟董晓芳曹英权
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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