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Optimization method and device for oilfield development scheme

A technology for oilfield development and optimization methods, applied in the direction of instruments, calculation models, data processing applications, etc., can solve the problem of not being able to obtain a more optimized oilfield development plan, and achieve the effect of promoting computer implementation, optimizing oilfield development plans, and flexibly expanding

Inactive Publication Date: 2019-01-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the development of computer technology, some development index optimization algorithms combined with computer technology have emerged, but they are limited to single index such as the optimization of well pattern parameters or injection-production parameters, and cannot obtain a more optimized oilfield development plan

Method used

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  • Optimization method and device for oilfield development scheme
  • Optimization method and device for oilfield development scheme
  • Optimization method and device for oilfield development scheme

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Embodiment 1

[0032] Embodiment 1 of the present invention provides a method for optimizing an oilfield development plan, see figure 1 The flow chart of the method for optimizing the oilfield development plan is shown, and the method includes:

[0033] Step S102, respectively code the optimization indexes of the oilfield development plan and combine the obtained codes to obtain the individual code of the oilfield development plan; the optimization indexes include at least two of the following parameters: well location parameters, well specific parameters, perforation and injection parameters.

[0034] The optimization index of oilfield development plan can include various categories, such as core variables such as well location parameters, well specific parameters, perforation and injection-production parameters. Each scheme includes at least the above two optimization indexes. Each indicator in each scheme is coded separately, and the obtained codes are combined to obtain an individual c...

Embodiment 2

[0094] Embodiment 2 of the present invention provides a method for optimizing an oilfield development plan, see Figure 7 The numerical model diagram of the oilfield work area of ​​the optimization method of the oilfield development plan is shown, the model dimension is 189×210×7; the two production wells in the work area are respectively Y5P1-1 and YX5; vertically divided into 7 layers, of which the first, Layers 3, 5, and 7 are reservoirs, layers 2, 4, and 6 are mudstone interlayers, and the oil-bearing area of ​​each layer is different (determined by the effective grid range of each layer); the open horizon of Y5P1-1 is the third layer, and YX5 Open the layer to layer 3. Now it is necessary to formulate a development plan for the area. The plan plans to deploy 5 new wells, including 3 production wells and 2 water injection wells. Now it is necessary to optimize the design of the scheme, and the design content includes new well location, well classification, open horizon of...

Embodiment 3

[0109] Embodiment 3 of the present invention provides a kind of oilfield development scheme optimization device, see Figure 8 The structural block diagram of the oilfield development plan optimization device shown, the device includes:

[0110]The encoding module 81 is used to separately encode the optimization indicators of the oilfield development plan and combine the obtained codes to obtain the individual encoding of the oilfield development plan; the optimization indicators include at least two of the following parameters: well location parameters and well specific parameters , perforation and injection-production parameters; calculation module 82, used to determine the fitness function, and calculate the fitness of individual codes according to the fitness function; genetic module 83, used to The fitness of the population generates a target population, and according to the target population, sequentially crossover and mutate to generate the Nth generation population, wh...

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Abstract

The invention provides an optimization method and device for an oilfield development scheme, which relate to the technical field of petroleum exploration and development. The method comprises the following steps: coding optimization indexes of the oilfield development scheme respectively and combining the codes obtained to obtain individual codes of the oilfield development scheme; calculating thefitness of individual coding according to the fitness function; carrying out cross and mutation according to that target population in turn to generate the N generation population, wherein N is greater than or equal to 2; judging whether the Nth generation population satisfies the constraint condition, and if not, regenerating the Nth generation population; if yes, judging whether the N generation population satisfies the termination condition; if the termination condition is not satisfied, generating the N+1 generation population; if the termination condition is satisfied, selecting and decoding the optimal individual coding to obtain the optimal oilfield development plan. The invention realizes the collaborative optimization of multi-index oilfield development scheme, and can be flexibly expanded to obtain more optimized oilfield development scheme.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a genetic method and device for optimizing an oilfield development plan. Background technique [0002] General oilfield development optimization is mainly to complete the development plan or adjustment plan optimization design through reservoir engineering method calculation, numerical simulation analysis combined with actual development adjustment experience. In recent years, with the development of computer technology, some development index optimization algorithms combined with computer technology have emerged, but they are limited to the optimization of a single index such as well pattern parameters or injection-production parameters, and cannot obtain a more optimized oilfield development plan. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a method and device for optimizing an oilfield d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02G06N3/00
CPCG06N3/006G06Q10/04G06Q10/06393G06Q50/02
Inventor 印波雷乐张国威王娟
Owner CHINA PETROLEUM & CHEM CORP
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