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Method and device for determining effective points of ternary compound oil flooding system

A ternary compound, oil displacement technology, applied in complex mathematical operations, instruments, climate change adaptation, etc., to achieve the effect of easy application and promotion, and convenient calculation methods

Inactive Publication Date: 2018-04-24
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Aiming at the deficiencies in the prior art and solving the problem of how to objectively and accurately judge the effect point of the ASP flooding system when the inflection point cannot be determined or the inflection point is not obvious in the prior art, the present invention provides an ASP flooding system. The method and device for determining the effective point of the oil system can effectively realize the objective, accurate and rapid judgment of the effective point of the ASP flooding system

Method used

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  • Method and device for determining effective points of ternary compound oil flooding system
  • Method and device for determining effective points of ternary compound oil flooding system
  • Method and device for determining effective points of ternary compound oil flooding system

Examples

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Comparison scheme
Effect test

Embodiment 1

[0072] The purpose of Example 1 is to provide a method for determining the effective point of the ASP flooding system.

[0073] In order to achieve the above object, the present invention adopts the following technical scheme:

[0074] like figure 1 as shown,

[0075] A method for determining the effectiveness point of an ASP flooding system, the method comprising:

[0076] Step (1): Receive the actual production data of the oil well and the actual water cut in the two stages of polymer flooding and ASP flooding;

[0077] Step (2): Fit the actual production data to obtain the water drive water cut prediction model parameters, and calculate the water drive fitted water cut;

[0078] Step (3): Calculate the difference between the actual water cut and the water-flooding fitting water cut in the polymer flooding and ASP flooding stages respectively; and calculate the difference between the actual water cut and the fitting continuous polymer flooding water cut in the whole stage...

Embodiment 2

[0129] The purpose of Embodiment 2 is to provide a computer-readable storage medium.

[0130] In order to achieve the above object, the present invention adopts the following technical scheme:

[0131] A computer-readable storage medium, in which a plurality of instructions are stored, and the instructions are adapted to be loaded by a processor of a terminal device and perform the following processing:

[0132] Receive the actual production data of the oil well and the actual water cut in the two stages of polymer flooding and ASP flooding;

[0133] Fit the actual production data to obtain the water cut model parameters, and calculate the water flooding fitting water cut;

[0134] Calculate the difference between the actual water cut and the water-flooding fitting water cut in the polymer flooding and ASP flooding stages respectively; and calculate the difference between the actual water cut and the fitting continuous polymer flooding water cut in the whole stage;

[0135] ...

Embodiment 3

[0138] The purpose of Embodiment 3 is to provide a device for determining the effective point of the ASP flooding system.

[0139] In order to achieve the above object, the present invention adopts the following technical scheme:

[0140] A device for determining the effective point of an ASP flooding system, which uses an Internet terminal device, including a processor and a computer-readable storage medium, the processor is used to implement instructions; the computer-readable storage medium is used to store multiple instructions, and the computer-readable storage medium is used to store multiple instructions. The above instructions are adapted to be loaded by the processor and perform the following processes:

[0141] Receive the actual production data of the oil well and the actual water cut in the two stages of polymer flooding and ASP flooding;

[0142] Fit the actual production data to obtain the water cut model parameters, and calculate the water flooding fitting wate...

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Abstract

The invention discloses a method and device for determining effective points of a ternary compound oil flooding system. The method comprises the steps of receiving oil well actual production data andactual moisture contents of two stages of a polymer flooding stage and a ternary compound oil flooding stage respectively; fitting the actual production data to obtain moisture content model parameters, and calculating the water flooding fitting moisture content; calculating the difference value of the actual moisture content and the water flooding fitting moisture of the polymer flooding stage and the difference value of the actual moisture content and the water flooding fitting moisture of the ternary compound oil flooding stage respectively; calculating the difference value of the actual moisture content and the fitting continuous polymer-flooding moisture content of the whole stage; drawing a curve on the same graph for the calculated difference value data in sequence, and determiningthe effective points. When a water-flooding curve method and a water-flooding derivative curve method cannot find inflection points or the inflection points are not obvious, the method for determiningthe effective points of the ternary compound oil flooding system can be utilized to judge the effective time, and can also be combined with a direct observation method for comparison and judgment, and the result is more objective and more accurate. The calculation method is convenient and practical, and is suitable for being applied and popularized in a mine field.

Description

technical field [0001] The invention belongs to the technical field of tertiary oil recovery, and in particular relates to a method and a device for determining the effect point of a three-element compound oil displacement system. Background technique [0002] At present, there are four main methods of tertiary oil recovery in the world, namely chemical flooding, gas flooding, thermal flooding and microbial oil recovery. Compared with the four major technology series of tertiary oil recovery, chemical flooding is an economical and efficient enhanced oil recovery technology, while ASP flooding is a new tertiary oil recovery technology that stands out from chemical flooding, and it is my country's tertiary oil recovery improvement. The main direction of research on recovery factor. The ASP flooding technology was produced in the early 1980s and was developed on the basis of the binary composite flooding. It refers to adding a compound of alkali (A), surfactant (S) and polymer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18G06Q10/06G06Q50/02
CPCG06F17/18G06Q10/06315G06Q50/02Y02A10/40
Inventor 程宏杰刘文涛张菁
Owner PETROCHINA CO LTD
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