Method, device and equipment for determining friction resistance

A technology for determining methods and design parameters, which is applied in drilling equipment, earthwork drilling, design optimization/simulation, etc.

Pending Publication Date: 2020-10-02
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a friction determination method, device and equipme

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  • Method, device and equipment for determining friction resistance
  • Method, device and equipment for determining friction resistance
  • Method, device and equipment for determining friction resistance

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Embodiment Construction

[0026] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0027] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0028] Although the processes described below include mul...

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Abstract

The invention provides a method, a device and equipment for determining friction resistance. The method comprises the following steps of obtaining a first drilling data set of a target well, wherein the data in the first drilling data set is a drilling design parameter value; acquiring a second drilling data set in the drilling process of the target well, wherein the data in the second drilling data set are working condition data and machine state data generated in the drilling process of the target well; inputting the first drilling data set and the second drilling data set into a predictionmodel trained through a neural network to obtain well bottom drilling pressure and well bottom torque of the target well; and determining the friction resistance of each tubular column in the target well by utilizing a tubular column integral stress model according to the well bottom drilling pressure and the well bottom torque. In the embodiment of the invention, through the real-time monitoringof the well bottom drilling pressure and the well bottom torque, the drilling process can be more accurately controlled, and the drilling risk is reduced. By means of the prediction model trained through the neural network, the well bottom drilling pressure and the well bottom torque can be more accurately and efficiently predicted.

Description

technical field [0001] The present application relates to the technical field of geological exploration, in particular to a friction determination method, device and equipment. Background technique [0002] With the advancement of drilling technology, non-vertical wells such as extended reach wells and horizontal wells are more used in the field. Due to the existence of highly deviated well sections and long horizontal sections, the friction and torque of the drill string in the downhole increase sharply , which brings a series of drilling problems such as reduced drilling efficiency and increased drilling accidents. Therefore, real-time and accurate analysis of downhole pipe string friction and torque is very critical in the drilling process. [0003] In the prior art, the mechanics of the pipe string is usually used for theoretical analysis, and the overall stress model of the pipe string is established, so as to calculate the friction. However, due to the complexity of t...

Claims

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Application Information

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IPC IPC(8): E21B47/06E21B44/02G06F30/20
CPCE21B47/06E21B49/003E21B44/02G06F30/20Y02T90/00
Inventor 郭慧娟张全立胡志坚宋先知朱硕明瑞卿蒋宏伟王宏伟韩飞肖建秋
Owner BC P INC CHINA NAT PETROLEUM CORP
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