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Fine division method of glutenite fan sedimentary facies belts constrained by multi-level well seismic

A technique for finely classifying and conglomerate, applied in the fields of seismology, seismology, and seismic signal processing for logging records, which can solve the problems of difficult to obtain core data in local areas, and the division and prediction of sandy conglomerate sedimentary microfacies, etc. problems, to achieve the effect of high precision, high reliability, and reasonable technical process for phase zone identification

Active Publication Date: 2022-02-18
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In actual production, the core observation method is difficult to obtain more detailed core data in local areas; the seismic attribute prediction method is due to the difference in formation velocity of different sedimentary microfacies, the smaller the difference, the more difficult it is to finely divide and predict the sedimentary microfacies of glutenite bodies

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  • Fine division method of glutenite fan sedimentary facies belts constrained by multi-level well seismic
  • Fine division method of glutenite fan sedimentary facies belts constrained by multi-level well seismic
  • Fine division method of glutenite fan sedimentary facies belts constrained by multi-level well seismic

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[0030] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0031] Such as figure 1 as shown, figure 1 It is a flow chart of the method for finely dividing sedimentary facies belts of glutenite fan bodies constrained by multi-level well seismic of the present invention.

[0032] (1) Obtain basic geological data such as seismic data bodies, logging information, geological stratification, and core logging;

[0033] (2) Make statistics on the velocity and density of different subfacies belts of the glutenite body, and clarify the subfacies velocity and density parameters of the glutenite body in the actual drilling work area. Based on the statistical velocity and density, establish a forward modeling model, and carry out seismic facies analysis on the glutenite body forward modeling model;

[0034] (3) Carry ou...

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Abstract

The invention provides a method for finely dividing the sedimentary facies belts of glutenite fans constrained by multi-level well seismic, including: counting the lithology velocity and density of glutenite fans in different facies zones, establishing a forward modeling model, and performing forward modeling on glutenite bodies The model carries out seismic facies analysis; establishes the sequence interface of the glutenite fan body; determines the seismic facies as the first-order constraint condition; determines the logging sensitivity curve as the second-level constraint condition; Sandy conglomerate body structural stage model; carry out analysis of variogram to determine variable spatial structure parameters; output simulation results, and extract plane attributes along the glutenite body stage interface tracked in step 1 to realize sandy conglomerate sedimentary sub- , micro-facies division of well-seismic multi-level constraint facies belts. The fine division method of sandy conglomerate fan sedimentary facies belts constrained by multi-level well seismic carried out numerical simulation under the geological model of fine phase division and structural phase modeling, and realized the precise sedimentary facies belts of sandy conglomerate sedimentary body seismic numerical simulation. divided.

Description

technical field [0001] The invention relates to the technical field of comprehensive interpretation research of seismic data and reservoir prediction, in particular to a method for finely dividing sandy conglomerate fan sedimentary facies belts constrained by multi-level well seismic. Background technique [0002] At present, there are many seismic facies identification and prediction and evaluation techniques for glutenite sedimentary geological bodies, and the main methods are mainly summarized into two types: one is the core observation method, and the sedimentary cycle is clarified through the actual core observation of multiple wells in the plane Sedimentary facies belts can be divided according to the core grain size, sorting and sedimentary structure of each sedimentary period; the other is the seismic attribute prediction method. Due to differences in amplitude attributes such as seismic transmission waveforms, seismic data are used to classify glutenite bodies of di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/40
CPCG01V1/306G01V1/40G01V2210/624
Inventor 刘建伟韩宏伟张云银曲志鹏耿雪孔省吾于景强
Owner CHINA PETROLEUM & CHEM CORP
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