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Oil column height obtaining method and device

A technology of oil column height and acquisition method, which is applied in the field of oilfield reservoir engineering, can solve the problem of low accuracy of oil column height, and achieve the effect of solving the problem of low accuracy of value, strong operability and accurate results

Pending Publication Date: 2021-01-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and device for obtaining the height of the oil column, which solves the technical problem that the accuracy of the oil column height in the carbonate reservoir is not high in the prior art

Method used

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  • Oil column height obtaining method and device
  • Oil column height obtaining method and device
  • Oil column height obtaining method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 It is a schematic flow chart of the method for obtaining the height of the oil column provided in Embodiment 1 of the present invention, figure 2 It is a schematic diagram of the height of the oil column provided by Embodiment 1 of the present invention.

[0052] The method for obtaining the height of the oil column provided in this embodiment can be used to obtain the height of the oil column in the oilfield reservoir, especially for the acquisition of the height of the oil column in the carbonate rock reservoir. The method for obtaining the height of the oil column provided in this embodiment The acquisition method achieves the purpose of accurately obtaining the height of the oil column of the carbonate reservoir, and solves the technical problem of low accuracy in the value of the oil column height of the carbonate reservoir in the prior art.

[0053] Such as figure 1 As shown, a method for obtaining the height of the oil column includes:

[0054] Step ...

Embodiment 2

[0065] image 3 It is a schematic flow chart of the method for obtaining the geothermal gradient of the oil well to be tested after the scheduled production period provided by the second embodiment of the present invention, Figure 4 It is a schematic flow chart of the method for obtaining the static temperature of the oil well to be tested before it is put into production or at the initial stage of production provided by Embodiment 2 of the present invention. Figure 5 is a linear graph of the static temperature linear fitting line provided by Embodiment 2 of the present invention, Image 6 It is a linear graph of the flow temperature linear fitting line provided in Example 2 of the present invention.

[0066] Further, on the basis of the above-mentioned embodiments, as image 3 As shown, in this embodiment, the geothermal gradient t in the well after the scheduled production period of the oil well to be tested is obtained, including:

[0067] Step S104: Obtain flow temper...

example

[0097] Example: Take an oil well to be tested at a middle depth of 7237.55m as an example

[0098] Taking the depth 2 of the middle part of the pay zone of a certain oil well 1 to be tested as an example, the method for obtaining the height of the oil column is as follows: carry out the static temperature and pressure gradient test on the oil well 1 to be tested before or at the beginning of production, and the well depth range For the inner 0-7100m, and measure the static temperature data corresponding to different well depths of the oil well 1 to be tested, make a line graph with the static temperature data as the abscissa and different well depths as the ordinate, and the higher end of the line graph temperature ( Figure 5 The position of the circle in the circle) is used for linear fitting to obtain a linear fitting formula, such as Figure 5 As shown, the fitting formula to obtain the static temperature linear fitting line is T=0.0182h+18.5004, and the depth of the produ...

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Abstract

The invention provides an oil column height obtaining method and device. The method comprises the steps: firstly obtaining a static temperature T1 corresponding to a preset depth in a to-be-measured oil well before the production or at the initial stage of production; then obtaining a flow temperature T2 and a ground temperature gradient t corresponding to the preset depth in the well after the to-be-measured oil well is put into production for a preset period; and finally, determining the oil reservoir oil column height of the to-be-measured oil well according to the flow temperature T2, thestatic temperature T1 and the ground temperature gradient t. The oil column height obtaining method has high operability, the obtained oil reservoir oil column height result is accurate, high guidanceis provided for oil reservoir development, the purpose of accurately obtaining the oil column height of a carbonate rock oil reservoir is achieved, and the technical problem that in the prior art, the value accuracy of the oil column height of the carbonate rock oil reservoir is not high is solved.

Description

technical field [0001] The invention relates to the technical field of oil field reservoir engineering, in particular to a method and device for obtaining the height of an oil column. Background technique [0002] The height of the oil column in a carbonate reservoir refers to the vertical distance from the bottom boundary to the top boundary of the oil in the reservoir, and is an important parameter for judging the size of the reservoir and calculating the reserves of the reservoir. The accuracy of oil column height in carbonate reservoirs is of great significance to the calculation of reservoir reserves, and reservoir reserves are important parameters for judging oil well potential and guiding later development. Therefore, how to get a more accurate oil reservoir Column height is a key topic of research for reservoir researchers. [0003] At present, the engraving method and reference adjacent wells are usually used to judge the oil column height of carbonate reservoirs i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/07E21B47/00
CPCE21B47/00Y02E10/10
Inventor 李红波王翠丽
Owner PETROCHINA CO LTD
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