Method for predicting reservoir crude oil density by utilizing family components

A technology of ethnic components and crude oil, applied in the field of predicting the density of crude oil in reservoirs, can solve the problems of large errors and achieve the effect of simple acquisition process

Pending Publication Date: 2021-02-02
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for predicting the density of reservoir crude oil by using family components, so as to solve the problem of large errors in existing crude oil density prediction methods

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  • Method for predicting reservoir crude oil density by utilizing family components
  • Method for predicting reservoir crude oil density by utilizing family components
  • Method for predicting reservoir crude oil density by utilizing family components

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Embodiment Construction

[0019]The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0020]The Chagan Sag is located in the eastern part of the Yingen-Ejinaqi Basin in Inner Mongolia. The discovered crude oil has a large distribution depth span, ranging from 900m to 3000m. The genetic types are complex, including mature light crude oil, biodegradable heavy oil, and some immature- Low-mature heavy oil; the density difference is also large, distributed between 0.8828 and 0.9849 mg / l. Due to the above characteristics, it is very difficult to accurately predict the density of crude oil in this area. The process of predicting the density of crude oil in the reservoir according to the present invention will be described in detail below in conjunction with an example of crude oil density prediction in the Chagan Sag. Such asfigure 1 Shown in this embodiment is the flow chart of using group components to predict reservoir crude oil density. The specific s...

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Abstract

The invention relates to a method for predicting reservoir crude oil density by utilizing family components, and belongs to the technical field of oil-gas exploration and development. The method comprises the following steps: firstly, acquiring reservoir crude oil samples of existing drilled wells in a research area, and detecting the density of each crude oil sample and family component data of each crude oil sample; then establishing a research area reservoir crude oil density calculation model, and training the research area reservoir crude oil density calculation model by taking the familycomponent data of each crude oil sample as an input quantity and taking the density of each crude oil sample as a target output quantity; and predicting the reservoir crude oil density of the newly drilled well by utilizing the trained reservoir crude oil density calculation model of the research area and the group component data of samples such as rock debris, well wall coring and groove surfaceoil spurs of the newly drilled well. According to the method, the research area reservoir crude oil density calculation model is established by utilizing family components of crude oil and the density of the crude oil, a certain number of existing drilling crude oil samples are subjected to model training, and high-precision and low-error prediction of the density of the new drilling reservoir crude oil is realized by utilizing the trained mathematical model.

Description

Technical field[0001]The invention relates to a method for predicting the density of crude oil in a reservoir by using group components, and belongs to the technical field of oil and gas exploration and development.Background technique[0002]Reservoir crude oil density is one of the important parameters that need to be clarified before the oil test plan design, reservoir reserve calculation, and reservoir development plan formulation. However, in the process of oil and gas exploration, the accurate data of reservoir crude oil density can only be obtained by collecting samples for experimental analysis after the oil is tested. Therefore, researchers need to predict the density of reservoir crude oil before oil testing.[0003]In the past, the prediction of crude oil density before oil testing mainly used the reservoir pyrolysis method, such as the study and application of the crude oil density prediction model of the pyrolysis method of the reservoir rocks in the Bohai Sea published in ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/28G01N9/36G06F30/20G06Q10/04G06Q50/02G06F113/08G06F111/10
CPCG01N9/36G01N33/2823G06Q10/04G06Q50/02
Inventor 周勇水彭君李红磊张云献张莹莹陈帆康华黄海宁
Owner CHINA PETROLEUM & CHEM CORP
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