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Method and device for detecting production degree of horizontal section reservoir

A technology of production degree and detection method, which is applied in earthwork drilling, wellbore/well components, buildings, etc., and can solve problems such as inaccurate measurement results

Active Publication Date: 2020-08-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a method and device for detecting the production degree of horizontal section reservoirs, so as to at least solve the technical problem of inaccurate measurement results of the production degree of SAGD horizontal section in the prior art

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  • Method and device for detecting production degree of horizontal section reservoir
  • Method and device for detecting production degree of horizontal section reservoir
  • Method and device for detecting production degree of horizontal section reservoir

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Embodiment 1

[0024] According to an embodiment of the present invention, an embodiment of a method for detecting the production degree of a horizontal section reservoir is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0025] figure 1 It is a flowchart of a method for detecting the production degree of a horizontal section reservoir according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0026] Step S102, determining the first temperature of the pipe wall of the production well at a plurality of preset nodes when the reservoir in the horizontal section is not in use.

[0027] Specifically, the preset multiple...

Embodiment 2

[0119] According to an embodiment of the present invention, an embodiment of a detection device for the production degree of a horizontal section reservoir is provided, figure 2 is a schematic diagram of a detection device for the production degree of a horizontal section reservoir according to an embodiment of the present invention, as shown in figure 2 As shown, the device includes:

[0120] The first determination module 20 is configured to determine the first temperature of the pipe wall of the production well at a plurality of preset nodes when the reservoir in the horizontal section is not in use.

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Abstract

The invention discloses a detection and device for the producing degree of horizontal section oil reservoirs. The device for the producing degree of the horizontal section oil reservoirs comprises thesteps that the first temperature of a pipe wall of a production well at presupposed a plurality of pitch points is determined when the horizontal section reservoirs are not used; the second temperature of the oil reservoir in the production well at the presupposed pitch points is detected; detection results of the horizontal section oil reservoirs at the presupposed pitch points are determined bycomparing the first temperature with the second temperature, and the detection results are used for indicating whether the horizontal section reservoirs are used or not at the presupposed pitch points; and the producing degree of the horizontal section reservoirs is determined according to the detection results of the horizontal section reservoirs at the presupposed pitch points. The detection and device for the producing degree of the horizontal section oil reservoirs solve the technical problem of inaccurate measurement results of the producing degree of the steam assisted gravity drainage(SAGD) horizontal section in the prior art.

Description

technical field [0001] The invention relates to the field of oilfield development, in particular to a method and device for detecting the production degree of a horizontal section oil reservoir. Background technique [0002] SAGD technology is a mature technology in the development of super heavy oil in the world, representing the highest level of super heavy oil development, the ultimate recovery rate can reach 50% to 70%, and it is an effective means of super heavy oil development at present. SAGD is currently the most widely used dual-horizontal well SAGD, two horizontal wells are distributed in parallel, the upper horizontal well is a steam injection well, and the lower horizontal well is a production well. SAGD production is divided into two phases—the start-up and production phases. In the start-up phase, the upper and lower horizontal wells (steam injection wells and production wells, referred to as injection-production wells) are simultaneously injected with high-tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/24E21B47/07
CPCE21B43/2406E21B47/07
Inventor 张磊陈森何小东黄勇杨洪李畅游红娟郭文德蒲丽萍伍文英
Owner PETROCHINA CO LTD