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Model building method and device for oilfield simulation system

An oilfield simulation and model technology, applied in the computer field, can solve the problems of inaccurate model prediction results and inaccurate fitting results of oilfield simulation systems, and achieve the effect of solving inaccurate fitting results and improving robustness.

Active Publication Date: 2022-05-27
BEIJING GRIDSUM TECH CO LTD
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Problems solved by technology

[0007] The embodiment of the present invention provides a model construction method and device for an oilfield simulation system, to at least solve the inaccurate fitting results of the parameters of the oilfield simulation system in the prior art, which leads to the prediction results of the model of the oilfield simulation system inaccurate technical issues

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  • Model building method and device for oilfield simulation system
  • Model building method and device for oilfield simulation system
  • Model building method and device for oilfield simulation system

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Embodiment 1

[0025] According to an embodiment of the present invention, an embodiment of a model construction method for an oilfield simulation system is provided. It should be noted that the steps shown in the flowchart 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 herein.

[0026] figure 1 It is a flow chart of a model building method for an oilfield simulation system according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0027] Step S102, acquiring historical data of a preset time period during the development process of the oil production well.

[0028] Specifically, the above-mentioned historical data may include the liquid production volume and the oil production volume of the oil production we...

Embodiment 2

[0088] According to an embodiment of the present invention, an embodiment of a model building device for an oilfield simulation system is provided, figure 2 is a schematic diagram of a model building device for an oilfield simulation system according to an embodiment of the present invention, such as figure 2 As shown, the device includes:

[0089] The acquisition module 20 is used for acquiring historical data of a preset time period during the development of the oil production well.

[0090]A construction module 22 for constructing a loss function based on a production well capacitance-resistance model including unknown model parameters, a fractional flow model including unknown model parameters, and the historical data, wherein the production well capacitance-resistance model is used to determine a production well The fractional flow rate model is used to determine the oil production rate of the oil production well, and the loss function is used to represent the predicti...

Embodiment 3

[0105] According to an embodiment of the present invention, a storage medium is provided, characterized in that the storage medium includes a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the model building method for an oilfield simulation system of Embodiment 1.

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Abstract

The invention discloses a model building method and device for an oil field simulation system. Among them, the method includes: obtaining historical data of a preset time period during the development of the production well; constructing a loss function based on the production well capacitance and resistance model including unknown model parameters, the fractional flow model including unknown model parameters and historical data, wherein , the production well capacitance-resistance model is used to determine the fluid production of the production well, the fractional flow model is used to determine the oil production of the production well, and the loss function is used to represent the prediction error of the production well capacitance-resistance model and the fractional flow model; The resistance model and the fractional flow model are fitted simultaneously to obtain the model parameters that minimize the loss function; based on the obtained model parameters, the production well capacitance resistance model and the fractional flow model of the oilfield simulation system are constructed. The invention solves the technical problem that the oil field simulation system in the prior art has inaccurate fitting results of parameters, which leads to inaccurate prediction results of the models of the oil field simulation system.

Description

technical field [0001] The invention relates to the field of computers, in particular to a model building method and device for an oilfield simulation system. Background technique [0002] With the continuous development of oilfields, the continuous production of crude oil has led to underground deficits and insufficient reservoir pressure in oilfields. In order to maintain normal oilfield production and fully obtain available resources, water injection development is a commonly implemented method. It refers to the process of injecting qualified water from a water injection well and producing water and crude oil from an oil well through pressure conduction. [0003] In the actual production process, due to the limitations of actual production, it is impossible to try all the water injection distribution schemes. Therefore, a simulation system can be built to simulate the real production conditions, and a large number of repeated experiments can be carried out, and select th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/0635G06Q50/02
Inventor 肖昌南
Owner BEIJING GRIDSUM TECH CO LTD
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