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Method and device for determining temperatures of upper end and lower end of gas injection well packer

A determination method and packer technology, applied in the direction of instruments, earthwork drilling, wellbore/well components, etc., can solve the problems that affect the protection effect of the packer and the installation position of the packer is not fixed, etc.

Active Publication Date: 2016-10-12
PETROCHINA CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

However, the installation position of the packer is not fixed at present, but is placed randomly based on experience, which affects the protection effect of the packer

Method used

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  • Method and device for determining temperatures of upper end and lower end of gas injection well packer
  • Method and device for determining temperatures of upper end and lower end of gas injection well packer

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[0083] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0084] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0085] refer to figure 2 , the embodiment of the present application provides a method for determining the temperature at the upper and lower ends of a packer...

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Abstract

The invention relates to the field of steam injection thermal recovery of thickened oil, in particular to a method and device for determining the temperatures of the upper end and the lower end of a gas injection well packer. The method includes the steps that the temperature field distribution of steam in a gas injection well heat insulation pipe is acquired; the temperature field distribution of the outer wall of the heat insulation pipe and the temperature field distribution of the inner wall of a casing pipe are acquired according to the temperature field distribution of the steam in the heat insulation pipe; the temperature of the lower end of the packer and the temperature of the upper end of the packer are acquired according to the temperature field distribution of the outer wall of the heat insulation pipe and the temperature field distribution of the inner wall of the casing pipe. According to the method, the temperature of the upper end of the packer and the temperature of the lower end of the packer are calculated, and therefore the position of the packer can be optimized; the method is of great guiding significance on improvement of the heat insulation effect of a gas injection well, prolonging of the thermal recovery life of an oil well and improvement of the quality of steam and the oil well thermal recovery effect.

Description

technical field [0001] The invention relates to the field of heavy oil steam injection thermal oil recovery, in particular to a method and a device for determining the temperature at the upper and lower ends of a packer of a gas injection well. Background technique [0002] Steam injection thermal oil recovery is based on the theory and method of thermodynamics and heat transfer, with heavy oil and high pour point oil as the main production objects, through heating (injecting steam) to reduce the viscosity of crude oil, remove oil layer plugging, and improve formation seepage characteristics , so as to enhance the recovery of crude oil recovery technology. At present, most of the heat insulation methods of onshore heavy oil steam thermal oil recovery technology use the heat insulation process of "insulated tube + packer". A part of the steam enters the annulus, causing the temperature of the annulus to rise, which will cause fatigue damage to the casing; the packer is used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00E21B47/06
CPCE21B47/07G16Z99/00
Inventor 马振张洪君孙振宇曲绍刚韦志华王智博杨宝春张成博李君刘锦王磊刘洪芹
Owner PETROCHINA CO LTD
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