Model generation method and device, and lithology identification method and device

A technology for model generation and lithology identification, which is applied in the field of data processing, can solve problems such as high technical level requirements for interpreters, inaccurate layer interface depth, poor interpretation accuracy and effect, and reduce the cost of practical experience and professional technical knowledge. Requirements, the realization of a high degree of automation, the effect of increasing speed and precision

Pending Publication Date: 2020-05-05
BEIJING GRIDSUM TECH CO LTD
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Problems solved by technology

However, the structure of the actual formation is complex and heterogeneous, which requires high technical level of interpreters, which leads to the problems of strong randomness, poor interpretation accuracy and effect, and inaccurate depth of layer interface in artificial stratification. , it will consume a lot of labor time for interpreters, and the efficiency of lithology identification is not high

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  • Model generation method and device, and lithology identification method and device
  • Model generation method and device, and lithology identification method and device
  • Model generation method and device, and lithology identification method and device

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Embodiment Construction

[0050] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051]At present, the interpretation and analysis of well logging data is generally carried out manually. With the help of professional application software for well logging interpretation, referring to the existing data of mud logging, core, oil test and production test, etc., the lithology of different formation depths in the area to be measured is analyzed. identify. Usually, the natural gamma ray curve and spontaneous potential...

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Abstract

The invention discloses a model generation method and device, and a lithology identification method and device. The model generation method comprises the steps of obtaining a training data set, wherein the training data set comprises multiple groups of instances, each group of instances comprises at least one piece of logging data and a data label, the at least one piece of logging data comprisesany one or more of a natural gamma curve, a natural potential curve, resistivity and a borehole diameter of the target area, and the data label is used for labeling lithology of the at least one pieceof logging data corresponding to different stratum depths; training a pre-constructed model by using the training data set to obtain a trained model, wherein the trained model is used for identifyinglithology of different stratum depths of the to-be-detected area. High automation of data processing and intellectualization of lithology identification can be achieved, the lithology identificationspeed and precision are improved, the labor intensity of interpreters is relieved, and the requirements for practical experience and professional technical knowledge of the interpreters are lowered.

Description

technical field [0001] The present application relates to the technical field of data processing, in particular to a method and device for generating a model and a method and device for identifying lithology. Background technique [0002] In oil and gas exploration, lithology identification and reservoir division of wellbore strata are the basis for identification and evaluation of oil and gas layers, and are also an important basis for studying the depositional model of oil reservoirs. Generally, there are three methods for realizing lithology identification: cuttings logging, drilling coring and logging interpretation. For cuttings logging, due to the existence of late arrival time and some human factors, there will be certain errors. Drilling and coring is currently the most reliable and intuitive method for lithology identification. However, there are generally fewer coring wells in oilfield development, and the number of coring sections is limited, so it is impossible ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06V20/10G06F18/24323G06F18/214G06F18/00
Inventor 刘福生
Owner BEIJING GRIDSUM TECH CO LTD
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