RU2795644C1 - Method for operational control of waterflooding - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: to implement the method of operational control of waterflooding in a row waterflooding system, a mathematical model of the field is created, in which the intake capacity of injection wells is determined based on the concept of approaching injection to production wells in development blocks with current fluid compensation and reservoir pressure. Injection modes on injection wells are calculated using the injection approximation factor, the value of which depends on the average distance between the producing wells and injection wells affecting them. The calculation of the current compensation is carried out using the CRM mathematical model, based on the principle of enlargement of production and injection wells, where wells of the same nature are combined into one well with generalized technological parameters. As a mathematical model, a combination of the analytical solution of the material balance equation and Darcy's law is used, which reflects the change in the fluid flow rate of the production well when changing the intake capacity of the injection wells affecting it and the fluid production of the surrounding production wells. At the same time, the adaptation of the mathematical model is performed by obtaining the minimum value of the objective function of the discrepancy between the actual and calculated fluid flow rates for each enlarged production well. The values of the control parameters of the model are determined, on the basis of which the distribution of injection between enlarged production wells is calculated. The injection is redistributed based on the values of the current fluid compensation and reservoir pressure measurements in the areas.

EFFECT: increase in the efficiency of injection distribution in injection rows and development blocks.

1 cl, 4 tbl, 8 dwg

Description

The invention relates to the oil industry, and in particular to the control of waterflooding of the in-line reservoir pressure maintenance system. The method makes it possible to distribute the injection between rows of injection wells, depending on the operating modes of production wells in development blocks.

There is a known method for estimating the distribution of injection by blocks of the field, which is described in the article by D.G. Abidov and M.R. Kamartdinova "Method of material balance as a primary tool for assessing the indicators of the development of a field site during waterflooding." The injection distribution is estimated for each injection well using the WAF coefficient (well allocation factor), which depends on the angle of inflow to the well, this coefficient is not constant and changes over time [1].

In the known method, the distribution of injection between injection wells and production wells is carried out only from geometrical considerations, which is a significant drawback.

There is a known method of distribution of injection, described in the work of Antonov M.S. "Compensatory regulation of waterflooding to improve the efficiency of the energy field of an oil reservoir". The author has developed a number of methods for increasing the production of oil reserves by regulating the selection and injection. The approach makes it possible to determine under-compensated and over-compensated zones of the reservoir, and in accordance with this, redistribute the injection to increase the recovery of reserves. Estimation of the distribution of injection in the method under consideration is carried out on the basis of a combination of statistical, geometric, and geological and filtration parameters. The described method is difficult to apply to in-line waterflooding systems due to the complexity of distributing injection between wells of the second, third and higher orders of the Voronov grid [2].

A known method of operational control of waterflooding is described in patent RU 2715593 C1, the set of features of which is closest to the set of features of the claimed invention, including the creation of a mathematical model based on a combination of the material balance equation and Darcy's law, which makes it possible to determine the effect of the mode of operation of injection wells on the fluid flow rate and oil production wells, thereby effectively distributing the injection in the field, which contributes to the achievement of the technical result [3].

The disadvantages of the known method, taken as a prototype, are:

- firstly, the method is poorly applicable to in-line waterflooding systems, since the search for potentially influencing wells is determined based on the radius, taken as the average distance between wells in the development system, and therefore not all influencing wells are taken into account when adapting;

- secondly, the methodology does not involve calculating the injectivity of candidate wells for transfer to reservoir pressure.

The task to be solved by the claimed technical solution is the effective organization of the reservoir pressure maintenance system (RPM).

The proposed method is designed to eliminate these shortcomings, which will positively affect the accuracy of the assessment of the injection distribution in the field and will expand the limits of applicability of the method to significantly undercompensated and overcompensated areas.

When implementing a technical solution, the task is solved by achieving a technical result, which consists in providing a targeted impact on the reservoir by injection in order to maintain reservoir pressure and increase fluid withdrawals.

The method for operational waterflooding management includes the creation of a mathematical model of a field with an in-line waterflooding system, in which each development block is presented in the form of enlarged production and injection wells. Within the framework of the proposed model, the calculated and actual indicators of the flow rate of the liquid of the enlarged production well are adapted, depending on the injectivity of the affecting enlarged injection wells. When calculating the model, the coefficients of mutual influence are determined, which reflect the proportion of injection that came from enlarged injection wells to enlarged production wells. Based on the coefficients obtained, the current compensation is calculated for each development block for the period for which the mathematical model was adapted.

Knowing the current compensation and the actual reservoir pressure makes it possible to effectively distribute the injection in the formed waterflooding system, to assign targeted measures designed to eliminate undercompensation and overcompensation zones, which ensures the effective organization of the reservoir pressure maintenance system and contributes to the achievement of the technical result.

The method is illustrated by materials where:

in fig. 1 schematically shows the principle of enlargement of production and injection wells in development blocks and waterflood rows;

in fig. 2 shows the configuration of the wells of the hydrodynamic model, the data of which are accepted as actual within the framework of the example for testing the algorithm;

in fig. 3, 4, 5 show the results of adapting the calculated flow rate to the actual flow rate for enlarged production wells P1, P2, P3;

in fig. 6 shows the distribution of reservoir pressure in the development blocks;

in fig. 7 is a graph of fluid production rate increment during distribution of injection according to the method described below;

in fig. 8 is a graph of oil production rate increase in the distribution of injection according to the method described below.

The method is characterized by the following sequence of actions:

1) formation of enlarged production and injection wells;

2) determination of the scheme of influence of enlarged wells;

3) calculation of indicators for enlarged wells (total fluid flow rate, total injectivity, weighted average productivity factor, weighted average bottomhole pressure);

4) adaptation of the CRM model to actual fluid flow rates, determination of mutual influence coefficients;

5) determination of the current compensation based on the coefficients of mutual influence;

6) increase in injection in development blocks with low compensation and reservoir pressure, determination of the modes of injected injection wells.

Formation of enlarged production and injection wells

Within each development block, all production wells are combined into one enlarged well. Similarly, injection wells within each development block are combined into one enlarged injection well. The injection wells belonging to each waterflood row also form enlarged wells. The well combination scheme is shown in Fig. 1. The initial development block is shown above, consisting of upper and lower injection wells, as well as production and injection wells located inside. The converted development block is shown below, based on the principle of well enlargement.

Determination of the scheme of influence of enlarged wells

The scheme of mutual influence of enlarged wells is established according to geometric features. It is understood that the injection series directly affects only the converted development blocks with which it shares a common boundary. It is also assumed that injection wells located within a converted development block only affect the production wells of that converted development block. In FIG. 1, the red arrows show the influence between producers and injection wells.

Calculation of indicators of enlarged wells

For each enlarged production well (example P1 in Fig. 1), the fluid flow rate is the sum of the flow rates of the wells that are part of it. Bottom hole pressure and productivity factor are determined as weighted average indicators per fluid flow rate. The injectivity of an enlarged injection well (example I1, I2, I3 shown in Fig. 1) is the sum of the injectivities of all its wells.

Adaptation of the CRM model

When adapting the mathematical model, the minimum value of the residual of the objective function is found sequentially for each of the enlarged production wells according to the formula:

дебит жидкости j-ой укрупненной добывающей скважины в момент времени t;

количество укрупненных добывающих скважин [ед.];

количество временных шагов; индексы «ф» и «р» показывают принадлежность величины дебита к факту и расчету соответственно.Where

fluid flow rate of the j-th enlarged production well at time t;

number of enlarged production wells [unit];

number of time steps; indices "f" and "p" show that the debit value belongs to the fact and calculation, respectively.

Estimated fluid flow rate is determined by the formula:

Where:

индекс нагнетательной скважины;

injection well index;

индекс добывающей скважины;

production well index;

приемистость i-ой укрупненной нагнетательной скважины [м³/сут];

injectivity of the i-th enlarged injection well [m ³ /day];

дебит жидкости j-ой укрупненной добывающей скважины [м³/сут];

fluid flow rate of the j-th enlarged production well [m ³ /day];

время [сут];

time [days];

номер временного шага;

time step number;

изменение времени на k-ом временном шаге [сут];

change in time at the k-th time step [days];

– временная константа [сут];

– time constant [days];

коэффициент взаимовлияния между i-ой укрупненной нагнетательной скважиной и j-ой укрупненной добывающей скважиной [д.ед.];

coefficient of mutual influence between the i-th enlarged injection well and the j-th enlarged production well [n.u.];

средний коэффициент продуктивности j-ой укрупненной добывающей скважины, взвешенный на дебит жидкости j-ой укрупненной добывающей скважины [м³/(сут*атм)];

the average productivity factor of the j-th enlarged production well, weighted by the fluid flow rate of the j-th enlarged production well [m ³ /(day*atm)];

среднее забойное давление j-ой укрупненной добывающей скважины, взвешенное на дебит жидкости j-ой укрупненной добывающей скважины [атм];

average bottomhole pressure of the j-th enlarged production well, weighted by the fluid flow rate of the j-th enlarged production well [atm];

– количество добывающих скважин, объединенных в j-ую укрупненную добывающую скважину [ед.];

– the number of production wells combined into the j-th enlarged production well [unit];

– количество влияющих укрупненных нагнетательных скважин [ед.];

– number of influencing enlarged injection wells [unit];

– объем воды, поступающей из водоносного горизонта за интервал времени

[м³/сут];

- the volume of water coming from the aquifer for a time interval

[m ³ / day];

– доля притока из-за контура, поступившая j-ый в блок разработки, д.ед.

is the share of inflow from behind the contour, received by the j-th development block, f.u.

и

в соответствии c формулами:In case of a change in the number of production wells over time, the parameters are recalculated

And

in accordance with the formulas:

и

соответственно.where m and n are the number of production wells at the time

And

respectively.

Determination of current compensation

When calculating the current compensation for the development block, the coefficients of mutual influence are used, the calculation formula is as follows:

накопленная закачка в пластовых условиях для нагнетательных скважин внутри блока разработки, за рассматриваемый период [м³];Where

cumulative injection in reservoir conditions for injection wells within the development block, for the period under consideration [m ³ ];

накопленная закачка в пластовых условиях для скважин нагнетательного ряда, за рассматриваемый период [м³];

cumulative injection in reservoir conditions for wells of the injection series, for the period under consideration [m ³ ];

накопленная добыча в пластовых условиях для добывающих скважин внутри блока разработки, за рассматриваемый период [м³].

cumulative production in reservoir conditions for production wells within the development block, for the period under review [m ³ ].

Download redistribution

Redistribution of injection is carried out according to the obtained values of the current compensation and reservoir pressure measurements. The regulation process is carried out by transferring the injection to undercompensated zones, which contributes to the restoration of reservoir pressure in these areas and an increase in fluid production. Transfer of injection is carried out by transferring production wells to the reservoir pressure maintenance program and launching injection wells. The calculation of the modes of injection wells when transferring injection to zones with low compensation is carried out using the injection approximation coefficient.

The injection approximation factor is equal to the ratio of the average distance between the influencing injection and production wells after the introduction of a new injection well to the average distance before the introduction of a new injection well:

среднее расстояние между добывающими и влияющими на них нагнетательными скважинами до ввода новой нагнетательной скважины;Where

the average distance between producing and influencing injection wells before the introduction of a new injection well;

среднее расстояние между добывающими и влияющими на них нагнетательными скважинами после ввода новой нагнетательной скважины.

the average distance between producers and influencing injectors after the introduction of a new injector.

The injectivity of a new injection source (a running well or a well converted to reservoir pressure) of an injection well is determined by the formula:

приемистость на новой нагнетательной скважине,Where

injectivity at a new injection well,

средняя приемистость влияющих нагнетательных скважин.

average injectivity of influencing injection wells.

To maintain the total injection for all wells, the injectivity of the influencing injection wells is reduced by an amount equal to:

величина сокращения приемистости,Where

the amount of reduction in injectivity,

приемистость влияющей нагнетательной скважины,

injectivity of the influencing injection well,

количество влияющих нагнетательных скважин.

number of influencing injection wells.

An example of the application of the method

The example is based on filtration model calculations.

In the example in FIG. Figure 2 shows an inline waterflooding system consisting of three development blocks, in the central part of development block 2 there are stopped injection wells. The permeability of the development blocks, in which the production and injection rows are located, is 100 mD. Development block 2 is limited by low-permeability (permeability equal to 5 mD) barriers from the northern and southern parts. The indicators of enlarged production and injection wells are presented in Table 1.

To evaluate the effect of the proposed waterflooding management work, a base case is calculated in which the injectivity of the injection wells remains unchanged throughout the entire calculation period.

Next, the CRM model is adapted to the actual flow rate of the liquid. For this, wells are grouped in development blocks into enlarged production and injection wells. The wells are combined as follows:

P1-1, P1-2, P1-3 are combined into P1;

P2-4, P2-5, P2-6 are combined into P2;

P3-7, P3-8, P3-9 are combined into P3;

I1-1, I1-2, I1-3, I1-4 are combined into I1;

I2-5, I2-6, I2-7, I2-8 are combined into I2;

I3-9, I3-10 are combined into I3.

After the enlargement of production and injection wells, a scheme of mutual influence is formed, based on the geometric arrangement of the blocks:

well I1 affects neighboring wells P1 and P2;

well I2 affects adjacent wells P2 and P3;

well I3, located in development block #2, affects only well P2.

The parameters of enlarged wells are determined: injectivity for injection wells; fluid rate, fluid rate weighted average bottomhole pressure, fluid rate weighted average productivity factor. The technological parameters of enlarged production wells are presented in Table 1.

Next, the CRM model is adapted to the actual fluid flow rate of enlarged production wells by finding the minimum residual of the objective function (Formula 1). The control parameters for the adaptation of the model are: the coefficient of mutual influence with the first injection row f ₁ , the coefficient of interference with the second injection row f ₂ , time constants τ and the coefficient of inflow due to the contour f _ew , the productivity coefficient J. The CRM model was tuned for the period from 01.01. .2016 to 01.01.2030. The results of CRM adaptation for enlarged production wells P1, P2, P3 are presented in Fig. 3, fig. 4 FIG. 5, respectively. The control parameters selected as a result of the calculation are shown in Table 2.

Table 2 - Control parameters control parameter P1 P2 P3 τ, days 32 36 208 f ₁ , d.u. 0.77 0.21 - f ₂ , d.u. - 0.2 0.79 F 0.0003 0.0033 0.0001 f _ew , d.u. 0.23 0.41 0.36 J, m ³ / atm * day 8.7 8.6 9.6

According to the results of the CRM model calculation, a low influence of wells of both the first and second injection series on production wells P2-4, P2-5, P2-6 was revealed. This is confirmed by the reduced reservoir pressure in development block No. 2 relative to development blocks No. 1 and No. 3 (Fig. 1), which directly affects the well flow rates in this development block. The fluid flow rate of the wells of the development block No. 2 is on average 40% lower than the fluid flow rate of the wells included in the development blocks No. 1 and No. 3. The parameters of development blocks are presented in Table 3.

Table 3 - Parameters of development blocks Parameter Block 1 Block 2 Block 3 Current reservoir pressure, atm 56.8 51.8 56.8 Fluid withdrawal compensation, % 91 75 87 Initial reservoir pressure, atm 60 60 60 Total liquid flow rate, m ³ / day 381 249 410

To restore reservoir pressure and increase the fluid flow rate of production wells located in development block No. 2, injection wells I3-9, I3-10 are launched in development block No. 2 and the injection is redistributed in the injection rows of wells, provided that the total injection volume is maintained at previous level.

Redistribution of the injection is carried out as follows.

The average distance between producing wells and influencing injection wells in development blocks is determined before the introduction of new wells. Next, the average distance between the production wells and the injection wells affecting them in the development blocks after the introduction of new wells is determined. Calculate the coefficient of approximation of the injection of injection wells. In accordance with the obtained coefficient, the injection mode is determined at a new injection well and the amount of injection reduction is calculated for the remaining influencing wells.

Well I3-9 affects wells P2-4 and P2-5. The average distance from wells P2-4 and P2-5 to the influencing injection wells I1-1, I1-2, I1-3, I2-5, I2-6, I2-7 is 353.6 m, after the launch of I3-9 the average distance is reduced up to 332.9 m. In the case under consideration, the injection approximation coefficient is (formula 6):

Knowing the injection approximation factor, the injection mode at well I3-9 is determined by formula (7):

The injection reduction in wells I1-1, I1-2, I1-3, I2-5, I2-6, I2-7 is:

Similarly, the algorithm is applied to well I3-10. The final modes of operation of wells in the injection rows, taking into account the launch of wells I3-9 and I3-10, are presented in Table 4.

Table 4 - Modes of injection of injection wells injection well Current injection mode, m ³ /day New injection mode, ^m3 /day I1-1 112.5 95 I1-2 112.5 77.5 I1-3 112.5 77.5 I1-4 112.5 95 I2-5 112.5 95 I2-6 112.5 77.5 I2-7 112.5 77.5 I2-8 112.5 95 I3-9 0 105 I3-10 0 105

After changing the modes of injection wells, in accordance with Table 2, the calculation of the forecast indicators of the flow rate of liquid and oil is performed. Comparison of technological indicators of development without changing the injection modes (base case) and technological indicators taking into account changes in injectivity in accordance with the proposed algorithm is shown in Fig. 1 and 2.

The increase in fluid flow rate over the three forecast years relative to the base case averaged 3.6%, and the increase in oil flow rate reached 2.6%.

Thus, the inventive method, through the operational management of waterflooding, allows you to effectively distribute the injection in the injection rows and development blocks, thereby achieving pressure restoration in undercompensated zones, as well as increasing fluid and oil flow rates.

Table 1 - Indicators of enlarged production wells date Liquid flow rate, m ³ / day Oil flow rate, m ³ / day Weighted average bottomhole pressure, atm Injectivity, m ³ / day Aquifer, ^m3 /day Flow rate of liquid CRM, m ³ / day P1 P2 P3 P1 P2 P3 P1 P2 P3 I1 I2 I3 P1 P2 P3 01/01/2016 364 215 384 78 51 51 40 40 40 450 450 0 82 364 215 384 01.02.2016 364 215 384 78 51 51 40 40 40 450 450 0 82 365 215 385 03/01/2016 364 216 384 77 51 51 40 40 40 450 450 0 82 365 216 385 04/01/2016 364 216 385 77 50 50 40 40 40 450 450 0 83 365 216 385 05/01/2016 365 216 385 77 50 50 40 40 40 450 450 0 83 366 217 385 06/01/2016 365 216 385 77 50 50 40 40 40 450 450 0 84 366 217 386 07/01/2016 365 217 385 76 49 50 40 40 40 450 450 0 84 366 217 386 08/01/2016 365 217 386 76 49 50 40 40 40 450 450 0 85 366 217 386 09/01/2016 365 217 386 76 49 49 40 40 40 450 450 0 85 366 218 386 01.10.2016 365 218 386 76 48 49 40 40 40 450 450 0 86 366 218 386 11/01/2016 366 218 386 75 48 49 40 40 40 450 450 0 86 366 218 386 12/01/2016 366 218 387 75 48 49 40 40 40 450 450 0 87 366 218 387 01/01/2017 366 218 387 75 47 49 40 40 40 450 450 0 87 367 219 387 02/01/2017 366 219 387 75 47 48 40 40 40 450 450 0 88 367 219 387 03/01/2017 366 219 387 74 47 48 40 40 40 450 450 0 89 367 219 387 04/01/2017 367 219 388 74 46 48 40 40 40 450 450 0 89 367 219 387 05/01/2017 367 219 388 74 46 48 40 40 40 450 450 0 90 367 220 388 06/01/2017 367 220 388 74 46 48 40 40 40 450 450 0 90 367 220 388 07/01/2017 367 220 388 74 46 48 40 40 40 450 450 0 91 367 220 388 08/01/2017 367 220 388 73 45 47 40 40 40 450 450 0 92 367 220 388 09/01/2017 367 221 389 73 45 47 40 40 40 450 450 0 92 368 221 389 01.10.2017 368 221 389 73 45 47 40 40 40 450 450 0 93 368 221 389 11/01/2017 368 221 389 73 44 47 40 40 40 450 450 0 93 368 221 389 12/01/2017 368 221 389 73 44 47 40 40 40 450 450 0 94 368 221 389 01/01/2018 368 222 389 72 44 46 40 40 40 450 450 0 94 368 222 389 01.02.2018 368 222 390 72 44 46 40 40 40 450 450 0 95 368 222 390 03/01/2018 368 222 390 72 43 46 40 40 40 450 450 0 96 368 222 390 04/01/2018 369 222 390 72 43 46 40 40 40 450 450 0 96 368 222 390 05/01/2018 369 222 390 72 43 46 40 40 40 450 450 0 97 369 223 390 06/01/2018 369 223 391 71 43 46 40 40 40 450 450 0 97 369 223 390 07/01/2018 369 223 391 71 43 46 40 40 40 450 450 0 98 369 223 391 08/01/2018 369 223 391 71 42 45 40 40 40 450 450 0 98 369 223 391 09/01/2018 369 223 391 71 42 45 40 40 40 450 450 0 99 369 224 391 01.10.2018 369 224 391 71 42 45 40 40 40 450 450 0 101 369 224 391 11/01/2018 370 224 392 71 42 45 40 40 40 450 450 0 101 370 224 392 12/01/2018 370 224 392 70 41 45 40 40 40 450 450 0 101 370 224 392 01.01.2019 370 224 392 70 41 45 40 40 40 450 450 0 102 370 225 392 02/01/2019 370 225 392 70 41 44 40 40 40 450 450 0 102 370 225 392 03/01/2019 370 225 392 70 41 44 40 40 40 450 450 0 103 370 225 392 04/01/2019 370 225 393 70 41 44 40 40 40 450 450 0 103 370 225 393 05/01/2019 370 225 393 70 40 44 40 40 40 450 450 0 104 370 226 393 06/01/2019 371 225 393 69 40 44 40 40 40 450 450 0 104 370 226 393 07/01/2019 371 226 393 69 40 44 40 40 40 450 450 0 104 370 226 393 08/01/2019 371 226 393 69 40 44 40 40 40 450 450 0 105 371 226 393 09/01/2019 371 226 394 69 40 44 40 40 40 450 450 0 105 371 226 393 01.10.2019 371 226 394 69 39 43 40 40 40 450 450 0 106 371 227 394 01.11.2019 371 226 394 69 39 43 40 40 40 450 450 0 106 371 227 394 01.12.2019 371 227 394 68 39 43 40 40 40 450 450 0 107 371 227 394 01/01/2020 372 227 394 68 39 43 40 40 40 450 450 0 107 371 227 394 02/01/2020 372 227 395 68 39 43 40 40 40 450 450 0 108 371 227 394 01.03.2020 372 227 395 68 38 43 40 40 40 450 450 0 108 371 228 394 04/01/2020 372 228 395 68 38 43 40 40 40 450 450 0 109 371 228 395 05/01/2020 372 228 395 68 38 42 40 40 40 450 450 0 109 372 228 395 06/01/2020 372 228 395 68 38 42 40 40 40 450 450 0 110 372 228 395 07/01/2020 372 228 395 67 38 42 40 40 40 450 450 0 110 372 228 395 08/01/2020 372 228 396 67 37 42 40 40 40 450 450 0 111 372 229 395 01.09.2020 373 229 396 67 37 42 40 40 40 450 450 0 111 372 229 395 01.10.2020 373 229 396 67 37 42 40 40 40 450 450 0 112 372 229 396 01.11.2020 373 229 396 67 37 42 40 40 40 450 450 0 112 372 229 396 01.12.2020 373 229 396 67 37 42 40 40 40 450 450 0 113 372 229 396 01.01.2021 373 229 397 67 37 42 40 40 40 450 450 0 113 372 230 396 02/01/2021 373 230 397 66 36 41 40 40 40 450 450 0 114 373 230 396 01.03.2021 373 230 397 66 36 41 40 40 40 450 450 0 114 373 230 396 04/01/2021 373 230 397 66 36 41 40 40 40 450 450 0 115 373 230 397 05/01/2021 374 230 397 66 36 41 40 40 40 450 450 0 115 373 230 397 06/01/2021 374 230 397 66 36 41 40 40 40 450 450 0 115 373 231 397 07/01/2021 374 231 398 66 36 41 40 40 40 450 450 0 116 373 231 397 08/01/2021 374 231 398 66 36 41 40 40 40 450 450 0 116 373 231 397 01.09.2021 374 231 398 66 35 41 40 40 40 450 450 0 117 373 231 397 01.10.2021 374 231 398 65 35 41 40 40 40 450 450 0 117 373 231 398 01.11.2021 374 231 398 65 35 40 40 40 40 450 450 0 118 373 232 398 01.12.2021 374 232 398 65 35 40 40 40 40 450 450 0 118 374 232 398 01.01.2022 374 232 399 65 35 40 40 40 40 450 450 0 119 374 232 398 02/01/2022 374 232 399 65 35 40 40 40 40 450 450 0 119 374 232 398 01.03.2022 375 232 399 65 35 40 40 40 40 450 450 0 119 374 232 398 04/01/2022 375 232 399 65 34 40 40 40 40 450 450 0 120 374 232 399 05/01/2022 375 233 399 65 34 40 40 40 40 450 450 0 120 374 233 399 06/01/2022 375 233 399 64 34 40 40 40 40 450 450 0 121 374 233 399 07/01/2022 375 233 399 64 34 40 40 40 40 450 450 0 121 374 233 399 08/01/2022 375 233 400 64 34 40 40 40 40 450 450 0 122 374 233 399 09/01/2022 375 234 400 64 34 39 40 40 40 450 450 0 122 375 233 399 01.10.2022 375 234 400 64 34 39 40 40 40 450 450 0 123 375 234 400 01.11.2022 375 234 400 64 33 39 40 40 40 450 450 0 123 375 234 400 12/01/2022 375 234 400 64 33 39 40 40 40 450 450 0 123 375 234 400 01.01.2023 375 234 400 64 33 39 40 40 40 450 450 0 124 375 234 400 02/01/2023 376 235 401 64 33 39 40 40 40 450 450 0 124 375 234 400 01.03.2023 376 235 401 63 33 39 40 40 40 450 450 0 125 375 234 400 04/01/2023 376 235 401 63 33 39 40 40 40 450 450 0 125 375 235 400 05/01/2023 376 235 401 63 33 39 40 40 40 450 450 0 125 375 235 401 06/01/2023 376 235 401 63 33 39 40 40 40 450 450 0 126 375 235 401 07/01/2023 376 235 401 63 32 39 40 40 40 450 450 0 126 375 235 401 08/01/2023 376 236 401 63 32 38 40 40 40 450 450 0 127 376 235 401 09/01/2023 376 236 402 63 32 38 40 40 40 450 450 0 127 376 236 401 01.10.2023 376 236 402 63 32 38 40 40 40 450 450 0 127 376 236 401 11/01/2023 376 236 402 63 32 38 40 40 40 450 450 0 128 376 236 401 01.12.2023 376 236 402 63 32 38 40 40 40 450 450 0 128 376 236 402 01.01.2024 376 237 402 62 32 38 40 40 40 450 450 0 129 376 236 402 02/01/2024 377 237 402 62 32 38 40 40 40 450 450 0 129 376 236 402 03/01/2024 377 237 402 62 32 38 40 40 40 450 450 0 129 376 237 402 04/01/2024 377 237 403 62 31 38 40 40 40 450 450 0 130 376 237 402 05/01/2024 377 237 403 62 31 38 40 40 40 450 450 0 130 376 237 402 06/01/2024 377 238 403 62 31 38 40 40 40 450 450 0 131 376 237 402 07/01/2024 377 238 403 62 31 38 40 40 40 450 450 0 131 377 237 403 08/01/2024 377 238 403 62 31 37 40 40 40 450 450 0 131 377 237 403 09/01/2024 377 238 403 62 31 37 40 40 40 450 450 0 132 377 237 403 01.10.2024 377 238 403 62 31 37 40 40 40 450 450 0 132 377 238 403 11/01/2024 377 239 404 62 31 37 40 40 40 450 450 0 132 377 238 403 01.12.2024 377 239 404 61 31 37 40 40 40 450 450 0 133 377 238 403 01.01.2025 377 239 404 61 thirty 37 40 40 40 450 450 0 133 377 238 403 02/01/2025 377 239 404 61 thirty 37 40 40 40 450 450 0 135 377 238 404 03/01/2025 378 239 404 61 thirty 37 40 40 40 450 450 0 135 377 239 404 04/01/2025 378 239 404 61 thirty 37 40 40 40 450 450 0 135 378 239 404 05/01/2025 378 240 404 61 thirty 37 40 40 40 450 450 0 135 378 239 404 06/01/2025 378 240 404 61 thirty 37 40 40 40 450 450 0 136 378 239 404 07/01/2025 378 240 405 61 thirty 37 40 40 40 450 450 0 136 378 239 404 08/01/2025 378 240 405 61 thirty 37 40 40 40 450 450 0 136 378 239 404 09/01/2025 378 240 405 61 thirty 36 40 40 40 450 450 0 136 378 240 405 01.10.2025 378 240 405 61 29 36 40 40 40 450 450 0 137 378 240 405 11/01/2025 378 241 405 61 29 36 40 40 40 450 450 0 137 378 240 405 01.12.2025 378 241 405 61 29 36 40 40 40 450 450 0 137 378 240 405 01/01/2026 378 241 405 60 29 36 40 40 40 450 450 0 138 378 240 405 02/01/2026 378 241 405 60 29 36 40 40 40 450 450 0 138 378 240 405 03/01/2026 378 241 406 60 29 36 40 40 40 450 450 0 138 378 240 405 04/01/2026 378 242 406 60 29 36 40 40 40 450 450 0 139 378 240 405 05/01/2026 378 242 406 60 29 36 40 40 40 450 450 0 139 378 241 405 06/01/2026 379 242 406 60 29 36 40 40 40 450 450 0 139 379 241 406 07/01/2026 379 242 406 60 29 36 40 40 40 450 450 0 140 379 241 406 08/01/2026 379 242 406 60 29 36 40 40 40 450 450 0 140 379 241 406 09/01/2026 379 242 406 60 28 36 40 40 40 450 450 0 141 379 241 406 01.10.2026 379 243 406 60 28 36 40 40 40 450 450 0 141 379 241 406 01.11.2026 379 243 407 60 28 35 40 40 40 450 450 0 141 379 241 406 01.12.2026 379 243 407 60 28 35 40 40 40 450 450 0 141 379 242 406 01.01.2027 379 243 407 60 28 35 40 40 40 450 450 0 142 379 242 406 02/01/2027 379 243 407 60 28 35 40 40 40 450 450 0 142 379 242 407 03/01/2027 379 243 407 59 28 35 40 40 40 450 450 0 142 379 242 407 04/01/2027 379 244 407 59 28 35 40 40 40 450 450 0 143 379 242 407 05/01/2027 379 244 407 59 28 35 40 40 40 450 450 0 143 379 242 407 06/01/2027 379 244 407 59 28 35 40 40 40 450 450 0 143 379 242 407 07/01/2027 379 244 407 59 28 35 40 40 40 450 450 0 144 379 243 407 08/01/2027 379 244 408 59 27 35 40 40 40 450 450 0 144 380 243 407 09/01/2027 379 245 408 59 27 35 40 40 40 450 450 0 144 380 243 407 01.10.2027 379 245 408 59 27 35 40 40 40 450 450 0 145 380 243 407 11/01/2027 379 245 408 59 27 35 40 40 40 450 450 0 145 380 243 408 01.12.2027 380 245 408 59 27 35 40 40 40 450 450 0 145 380 243 408 01.01.2028 380 245 408 59 27 35 40 40 40 450 450 0 146 380 243 408 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409 05/01/2029 380 248 410 58 26 34 40 40 40 450 450 0 150 381 245 410 06/01/2029 380 248 410 58 26 34 40 40 40 450 450 0 151 381 246 410 07/01/2029 380 248 410 58 26 34 40 40 40 450 450 0 151 381 246 410 08/01/2029 381 248 410 58 26 34 40 40 40 450 450 0 151 381 246 410 09/01/2029 381 249 410 58 26 33 40 40 40 450 450 0 152 381 246 410 01.10.2029 381 249 410 58 25 33 40 40 40 450 450 0 152 381 246 410 11/01/2029 381 249 410 58 25 33 40 40 40 450 450 0 152 381 246 410 01.12.2029 381 249 410 58 25 33 40 40 40 450 450 0 153 382 246 410 01.01.2030 381 249 411 58 25 33 40 40 40 450 450 0 152 382 246 410 02/01/2030 376 274 405 57 27 33 40 40 40 345 345 210 156 - - - 03/01/2030 373 288 403 57 29 34 40 40 40 345 345 210 163 - - - 04/01/2030 372 297 401 57 29 34 40 40 40 345 345 210 169 - - - 05/01/2030 371 302 401 57 29 34 40 40 40 345 345 210 174 - - - 06/01/2030 371 305 401 57 29 34 40 40 40 345 345 210 178 - - - 07/01/2030 371 307 401 57 29 34 40 40 40 345 345 210 181 - - - 08/01/2030 371 308 401 57 29 34 40 40 40 345 345 210 184 - - - 09/01/2030 371 309 401 57 29 34 40 40 40 345 345 210 186 - - - 01.10.2030 371 310 401 57 29 34 40 40 40 345 345 210 188 - - - 11/01/2030 371 310 401 57 28 34 40 40 40 345 345 210 189 - - - 01.12.2030 370 310 401 57 28 33 40 40 40 345 345 210 190 - - - 01/01/2031 370 311 401 57 28 33 40 40 40 345 345 210 191 - - - 02/01/2031 370 311 401 57 28 33 40 40 40 345 345 210 192 - - - 03/01/2031 370 311 401 57 28 33 40 40 40 345 345 210 193 - - - 04/01/2031 370 311 402 57 27 33 40 40 40 345 345 210 193 - - - 05/01/2031 370 312 402 57 27 33 40 40 40 345 345 210 194 - - - 06/01/2031 370 312 402 57 27 33 40 40 40 345 345 210 194 - - - 07/01/2031 370 312 402 57 27 33 40 40 40 345 345 210 195 - - - 08/01/2031 370 312 402 57 27 33 40 40 40 345 345 210 195 - - - 09/01/2031 370 313 402 57 27 33 40 40 40 345 345 210 196 - - - 01.10.2031 370 313 402 57 26 33 40 40 40 345 345 210 196 - - - 11/01/2031 370 313 402 57 26 33 40 40 40 345 345 210 197 - - - 12/01/2031 370 314 402 57 26 33 40 40 40 345 345 210 197 - - - 01/01/2032 370 314 402 57 26 33 40 40 40 345 345 210 198 - - - 02/01/2032 370 314 402 57 26 33 40 40 40 345 345 210 198 - - - 03/01/2032 370 314 402 57 26 33 40 40 40 345 345 210 198 - - - 04/01/2032 370 315 402 57 25 33 40 40 40 345 345 210 199 - - - 05/01/2032 370 315 402 57 25 33 40 40 40 345 345 210 199 - - - 06/01/2032 370 315 402 57 25 33 40 40 40 345 345 210 200 - - - 07/01/2032 370 315 402 57 25 32 40 40 40 345 345 210 200 - - - 08/01/2032 370 316 402 57 25 32 40 40 40 345 345 210 200 - - - 09/01/2032 370 316 402 57 25 32 40 40 40 345 345 210 200 - - - 01.10.2032 370 316 402 57 25 32 40 40 40 345 345 210 201 - - - 11/01/2032 370 316 402 57 24 32 40 40 40 345 345 210 201 - - - 12/01/2032 370 317 403 57 24 32 40 40 40 345 345 210 201 - - - 01/01/2033 370 317 403 57 24 32 40 40 40 345 345 210 202 - - - 02/01/2033 370 317 403 57 24 32 40 40 40 345 345 210 202 - - - 03/01/2033 370 317 403 57 24 32 40 40 40 345 345 210 202 - - - 04/01/2033 370 318 403 57 24 32 40 40 40 345 345 210 202 - - - 05/01/2033 370 318 403 57 24 32 40 40 40 345 345 210 203 - - - 06/01/2033 370 318 403 57 23 32 40 40 40 345 345 210 203 - - - 07/01/2033 370 318 403 57 23 32 40 40 40 345 345 210 203 - - - 08/01/2033 370 318 403 57 23 32 40 40 40 345 345 210 204 - - - 09/01/2033 370 319 403 57 23 32 40 40 40 345 345 210 204 - - - 01.10.2033 370 319 403 57 23 32 40 40 40 345 345 210 204 - - - 11/01/2033 370 319 403 57 23 32 40 40 40 345 345 210 205 - - - 12/01/2033 370 319 403 57 23 32 40 40 40 345 345 210 205 - - - 01/01/2034 370 320 403 57 23 32 40 40 40 345 345 210 205 - - - 02/01/2034 370 320 403 57 22 32 40 40 40 345 345 210 205 - - - 03/01/2034 370 320 403 57 22 32 40 40 40 345 345 210 206 - - - 04/01/2034 370 320 403 57 22 32 40 40 40 345 345 210 206 - - - 05/01/2034 370 321 403 57 22 32 40 40 40 345 345 210 206 - - - 06/01/2034 370 321 403 57 22 32 40 40 40 345 345 210 206 - - - 07/01/2034 370 321 403 57 22 31 40 40 40 345 345 210 207 - - - 08/01/2034 370 321 404 57 22 31 40 40 40 345 345 210 207 - - - 09/01/2034 370 321 404 57 22 31 40 40 40 345 345 210 207 - - - 01.10.2034 370 322 404 57 22 31 40 40 40 345 345 210 208 - - - 11/01/2034 370 322 404 57 22 31 40 40 40 345 345 210 208 - - - 12/01/2034 370 322 404 57 21 31 40 40 40 345 345 210 208 - - - 01.01.2035 370 322 404 57 21 31 40 40 40 345 345 210 208 - - - 02/01/2035 370 323 404 57 21 31 40 40 40 345 345 210 209 - - - 03/01/2035 370 323 404 57 21 31 40 40 40 345 345 210 209 - - - 04/01/2035 370 323 404 57 21 31 40 40 40 345 345 210 209 - - - 05/01/2035 370 323 404 57 21 31 40 40 40 345 345 210 209 - - - 06/01/2035 370 323 404 57 21 31 40 40 40 345 345 210 210 - - - 07/01/2035 370 324 404 57 21 31 40 40 40 345 345 210 210 - - - 08/01/2035 370 324 404 57 21 31 40 40 40 345 345 210 210 - - - 09/01/2035 370 324 404 57 21 31 40 40 40 345 345 210 210 - - - 01.10.2035 370 324 404 57 21 31 40 40 40 345 345 210 211 - - - 11/01/2035 370 324 404 57 21 31 40 40 40 345 345 210 211 - - - 12/01/2035 370 325 404 57 20 31 40 40 40 345 345 210 211 - - - 01/01/2036 370 325 404 57 20 31 40 40 40 345 345 210 211 - - - 02/01/2036 370 325 404 57 20 31 40 40 40 345 345 210 212 - - - 03/01/2036 370 325 404 57 20 31 40 40 40 345 345 210 212 - - - 04/01/2036 370 325 405 57 20 31 40 40 40 345 345 210 212 - - - 05/01/2036 370 326 405 57 20 31 40 40 40 345 345 210 212 - - - 06/01/2036 370 326 405 57 20 31 40 40 40 345 345 210 213 - - - 07/01/2036 370 326 405 57 20 31 40 40 40 345 345 210 213 - - - 08/01/2036 370 326 405 57 20 31 40 40 40 345 345 210 213 - - - 09/01/2036 370 326 405 57 20 31 40 40 40 345 345 210 213 - - - 01.10.2036 370 327 405 57 20 31 40 40 40 345 345 210 214 - - - 11/01/2036 370 327 405 57 20 31 40 40 40 345 345 210 214 - - - 12/01/2036 370 327 405 57 20 31 40 40 40 345 345 210 214 - - - 01/01/2037 370 327 405 57 19 31 40 40 40 345 345 210 214 - - - 02/01/2037 370 327 405 57 19 thirty 40 40 40 345 345 210 215 - - - 03/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 215 - - - 04/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 215 - - - 05/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 215 - - - 06/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 216 - - - 07/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 216 - - - 08/01/2037 370 328 405 57 19 thirty 40 40 40 345 345 210 216 - - - 09/01/2037 370 329 405 57 19 thirty 40 40 40 345 345 210 216 - - - 01.10.2037 370 329 405 57 19 thirty 40 40 40 345 345 210 217 - - - 11/01/2037 370 329 405 57 19 thirty 40 40 40 345 345 210 217 - - - 12/01/2037 370 329 405 57 19 thirty 40 40 40 345 345 210 217 - - - 01.01.2038 370 329 406 57 19 thirty 40 40 40 345 345 210 217 - - - 02/01/2038 370 330 406 57 19 thirty 40 40 40 345 345 210 218 - - - 03/01/2038 370 330 406 57 19 thirty 40 40 40 345 345 210 218 - - - 04/01/2038 370 330 406 57 19 thirty 40 40 40 345 345 210 218 - - - 05/01/2038 370 330 406 57 18 thirty 40 40 40 345 345 210 218 - - - 06/01/2038 370 330 406 57 18 thirty 40 40 40 345 345 210 218 - - - 07/01/2038 370 330 406 57 18 thirty 40 40 40 345 345 210 218 - - - 08/01/2038 370 331 406 57 18 thirty 40 40 40 345 345 210 219 - - - 09/01/2038 370 331 406 57 18 thirty 40 40 40 345 345 210 219 - - - 01.10.2038 370 331 406 57 18 thirty 40 40 40 345 345 210 219 - - - 11/01/2038 370 331 406 57 18 thirty 40 40 40 345 345 210 219 - - - 12/01/2038 370 331 406 57 18 thirty 40 40 40 345 345 210 220 - - - 01/01/2039 370 331 406 57 18 thirty 40 40 40 345 345 210 220 - - - 02/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 220 - - - 03/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 221 - - - 04/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 221 - - - 05/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 221 - - - 06/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 221 - - - 07/01/2039 370 332 406 57 18 thirty 40 40 40 345 345 210 221 - - - 08/01/2039 370 332 407 57 18 thirty 40 40 40 345 345 210 221 - - - 09/01/2039 370 333 407 57 18 thirty 40 40 40 345 345 210 222 - - - 01.10.2039 370 333 407 57 18 thirty 40 40 40 345 345 210 222 - - - 11/01/2039 370 333 407 57 17 thirty 40 40 40 345 345 210 222 - - - 12/01/2039 370 333 407 57 17 thirty 40 40 40 345 345 210 222 - - - 01.01.2040 370 333 407 57 17 thirty 40 40 40 345 345 210 222 - - - 02/01/2040 370 333 407 57 17 29 40 40 40 345 345 210 223 - - - 03/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 223 - - - 04/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 223 - - - 05/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 223 - - - 06/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 224 - - - 07/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 224 - - - 08/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 224 - - - 09/01/2040 370 334 407 57 17 29 40 40 40 345 345 210 224 - - - 01.10.2040 370 335 407 57 17 29 40 40 40 345 345 210 224 - - - 11/01/2040 370 335 407 57 17 29 40 40 40 345 345 210 224 - - - 12/01/2040 370 335 407 57 17 29 40 40 40 345 345 210 225 - - -

Claims (1)

A method for operational control of reservoir flooding in a row flooding system, characterized in that it includes the creation of a mathematical model of the field, in which the determination of the injectivity of injection wells is carried out based on the concept of approaching injection to production wells in development blocks with current fluid compensation and reservoir pressure, in which injection modes on injection wells, it is calculated using the injection approximation factor, the value of which depends on the average distance between the producing and influencing injection wells, while the calculation of the current fluid compensation is carried out using the CRM mathematical model, based on the principle of enlargement of production and injection wells, where they are combined wells of the same nature into one well with generalized technological parameters, the input current data for the mathematical model are the date of measurement, the flow rate of an enlarged production well, equal to the sum of the flow rates of the combined production wells, the weighted average bottomhole pressure for the combined production wells, the weighted average productivity factor for the combined production wells, injectivity of injection wells, equal to the total injectivity of the combined injection wells, as a mathematical model, a combination of the analytical solution of the material balance equation and Darcy's law is used, which reflects the change in the fluid flow rate of the production well with a change in the injectivity of the injection wells affecting it and the fluid production of the surrounding production wells, while adapting the mathematical model are performed by obtaining the minimum value of the objective function of the discrepancy between the actual and calculated fluid flow rates for each enlarged production well, determine the values of the control parameters of the model, on the basis of which the injection distribution between the enlarged production wells is calculated, based on the values of the current fluid compensation and reservoir pressure measurements in the areas, redistribution is carried out downloads.

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