Oil and gas drilling strategy prediction method and device based on multiple targets

A technology of oil and gas drilling and prediction method, applied in the field of oil and gas drilling

Active Publication Date: 2021-05-14
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

At present, there is no efficient and accurate multi-objective based oil and gas drilling strategy prediction scheme

Method used

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  • Oil and gas drilling strategy prediction method and device based on multiple targets
  • Oil and gas drilling strategy prediction method and device based on multiple targets
  • Oil and gas drilling strategy prediction method and device based on multiple targets

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0026] In the field of oil drilling, research on multi-objective collaborative optimization of engineering parameters based on multiple subsystems, some scholars have established multivariate penetration rate equations and drilling cost equations based on multiple parameters, determined constraints according to physical mechanisms, and adopted multivariate nonlinear programming methods. Drilling parameters were comprehensively decided. Some scholars use the multi-objective reliability optimization method to make a comprehensive optimization decision on drill bit foota...

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Abstract

The invention discloses an oil and gas drilling strategy prediction method and device based on multiple targets. The method comprises the steps that a plurality of sub-model optimization results are obtained according to oil and gas drilling parameters inputted by a user and a plurality of different types of target optimization sub-models; a plurality of groups of preliminary oil and gas drilling strategies are obtained according to a preset control parameter combination and the plurality of sub-model optimization results; based on a preset crossover rate and a preset mutation rate, according to the plurality of groups of preliminary oil and gas drilling strategies and the corresponding sub-model target values, a plurality of sub-models are called, and strategy collaborative optimization processing is performed to obtain the plurality of groups of collaboratively optimized oil and gas drilling strategies; and the plurality of groups of collaboratively optimized oil and gas drilling strategies are sorted to obtain the plurality groups of optimal oil and gas drilling strategies according to a pre-established comprehensive objective function. According to the oil and gas drilling strategy prediction method and the device, oil and gas drilling strategy prediction can be efficiently and accurately performed, so that more efficient, safer and low-cost drilling is realized, and scientific and effective guidance is provided for oil and gas drilling.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a multi-objective based oil and gas drilling strategy prediction method and device. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] At present, there are many single-objective optimization systems in the field of oil and gas drilling, such as mechanical penetration rate optimization system, friction torque optimization system, drilling fluid optimization system, etc. Although these sub-optimization systems have improved drilling efficiency and reduced costs to a certain extent, due to the complexity of the drilling process, multiple parameters are interrelated, and multiple targets affect each other. The change of one parameter is often accompanied by other The chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00G06F30/20G06Q50/02
CPCE21B49/00G06F30/20G06Q50/02
Inventor 宋先知裴志君王潘涛李根生黄中伟田守嶒史怀忠
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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