CN107939365B - Pad fluid energizing fracturing scheme generation method and device - Google Patents
Pad fluid energizing fracturing scheme generation method and device Download PDFInfo
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- CN107939365B CN107939365B CN201711138015.4A CN201711138015A CN107939365B CN 107939365 B CN107939365 B CN 107939365B CN 201711138015 A CN201711138015 A CN 201711138015A CN 107939365 B CN107939365 B CN 107939365B
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- 239000012530 fluid Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 165
- 239000007924 injection Substances 0.000 claims abstract description 165
- 238000004519 manufacturing process Methods 0.000 claims abstract description 150
- 239000003129 oil well Substances 0.000 claims abstract description 143
- 238000004088 simulation Methods 0.000 claims abstract description 59
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 230000008901 benefit Effects 0.000 claims abstract description 32
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 110
- 230000000638 stimulation Effects 0.000 claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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Abstract
The invention provides a method and a device for generating kinds of pad fluid energized fracturing schemes, wherein the method comprises the steps of obtaining oil deposit physical data of a target oil well and establishing a corresponding oil deposit model, simulating formation pressure recovery conditions of the target oil well under different energized fluid injection quantities based on the oil deposit model to obtain a formation pressure recovery model, simulating oil production conditions of the target oil well under different energized fluid injection quantities based on the formation pressure recovery model to obtain a corresponding fracturing simulation model and a corresponding relation between oil production quantity and production time, selecting the energized fluid injection quantity which enables the target oil well to have highest oil production efficiency or highest economic benefit within a preset production time period according to the corresponding relation, and generating the corresponding fracturing scheme based on the fracturing simulation model of the energized fluid injection quantity, wherein the application range of the method is , and the appropriate pad fluid energized fracturing scheme can be generated for the target oil well so as to improve the fracturing oil production quantity of the corresponding oil well.
Description
Technical Field
The invention relates to the technical field of hydraulic fracturing of oil wells, in particular to a method and a device for generating pad fluid energized fracturing schemes.
Background
The hydraulic fracturing conducts high pressure formed by a ground pump truck to a stratum through fracturing fluid to crack the reservoir and form artificial fractures, so that oil-gas flowing channels are formed in the reservoir by the artificial fractures, the oil-gas drainage area and the sweep range are increased, and the oil-gas yield is increased, wherein the fracturing fluid carries a propping agent for supporting the fractures.
However, the scheme has very large limitation and narrow application range, and cannot fundamentally improve the fracturing oil yield of oil wells with serious stratum energy depletion, therefore, how to provide application ranges can provide a proper fracturing scheme according to oil wells in different conditions so as to improve the fracturing oil yield of the corresponding oil wells, and the method is a technical problem which needs to be solved urgently for technicians in the field.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide pad fluid energized fracturing scheme generation methods and devices, wherein the pad fluid energized fracturing scheme generation method has an application range of , and the fracturing oil yield of a corresponding oil well can be improved by correspondingly generating a fracturing scheme with an appropriate injection amount of energized fluid in the pad fluid for the oil wells in different conditions.
With respect to the pad energized fracturing plan generation method, a preferred embodiment of the present invention provides pad energized fracturing plan generation methods.
Acquiring oil deposit physical data of a target oil well, and establishing an oil deposit model corresponding to the target oil well according to the oil deposit physical data;
simulating the stratum pressure recovery conditions of the target oil well under different injection quantities of the energizing liquid based on the oil reservoir model to obtain a corresponding stratum pressure recovery model;
simulating the oil production condition when the target oil well is fractured under different injection quantities of the energizing liquid based on the stratum pressure recovery model to obtain corresponding fracturing simulation models under different injection quantities of the energizing liquid and the corresponding relation between the oil production quantity and the production time;
and selecting the injection quantity of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection quantities of the energizing liquids according to the corresponding relation, and generating a corresponding fracturing scheme based on a fracturing simulation model corresponding to the injection quantity of the energizing liquid.
With respect to the pad energized fracturing plan generating device, a preferred embodiment of the present invention provides pad energized fracturing plan generating devices.
The oil reservoir model establishing module is used for acquiring oil reservoir physical data of a target oil well and establishing an oil reservoir model corresponding to the target oil well according to the oil reservoir physical data;
the recovery model simulation module is used for simulating the formation pressure recovery conditions of the target oil well under different injection quantities of the energizing liquid based on the oil reservoir model to obtain a corresponding formation pressure recovery model;
the fracturing model simulation module is used for simulating the oil production condition when the target oil well is fractured under different injection quantities of the energizing liquid based on the stratum pressure recovery model to obtain corresponding fracturing simulation models under different injection quantities of the energizing liquid and the corresponding relation between the oil production quantity and the production time;
and the fracturing scheme generation module is used for selecting the injection amount of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection amounts of the energizing liquids according to the corresponding relation, and generating a corresponding fracturing scheme based on a fracturing simulation model corresponding to the injection amount of the energizing liquid.
Compared with the prior art, the method and the device for generating the pad fluid energized fracturing scheme have the advantages that the application range of the pad fluid energized fracturing scheme generation method is , the fracturing oil yield of a corresponding oil well can be improved by correspondingly generating the fracturing scheme with the energy-increasing fluid with the proper injection amount in advance for the oil wells with different conditions, specifically, after the oil deposit physical data of the target oil well are obtained, a model corresponding to the target oil well is built according to the oil deposit physical data, the stratum pressure recovery conditions of the target oil well under different energy-increasing fluid injection amounts are simulated based on the oil deposit model, the stratum pressure recovery models under different energy-increasing fluid injection amounts are obtained, then the oil production conditions of the target oil well when the target oil well is fractured under different energy-increasing fluid injection amounts are simulated based on the stratum pressure recovery model, the fracturing simulation models under different energy-increasing fluid injection amounts and the corresponding relation between the oil yield and the production time are obtained, finally, the highest economic benefit of the pad fluid injection amount of the oil production is selected from the corresponding energy-increasing fluid injection amounts according to the corresponding relation, and the fracturing scheme is generated based on the fracturing scheme with the highest energy-increasing fluid injection amount, and the highest economic benefit of the fracturing of the target oil production fluid is improved by correspondingly.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the claims of the present invention, and it is obvious for those skilled in the art that other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an interaction diagram of a server communicating with at least user terminals according to a preferred embodiment of the present invention.
Fig. 2 is a block diagram of kinds of blocks of the user terminal shown in fig. 1.
Fig. 3 is a block diagram of types of the server shown in fig. 1.
Fig. 4 is a schematic flow chart of methods for generating a pad fluid energized fracturing plan according to the preferred embodiment of the present invention.
Fig. 5 is a flowchart illustrating sub-steps included in step S330 shown in fig. 4.
Fig. 6 is a schematic flow chart of a sub-step included in step S340 shown in fig. 4.
Fig. 7 is a schematic flow chart of another partial sub-step included in step S340 shown in fig. 4.
Fig. 8 is another schematic flow charts of the method for generating a pad fluid energized fracturing plan according to the preferred embodiment of the present invention.
Fig. 9 is a block diagram of schematic diagrams of the pad energized fracturing scheme generating device shown in fig. 2 according to a preferred embodiment of the present invention.
Fig. 10 is another block schematic diagram of the pad energized fracturing scheme generating device shown in fig. 2 according to the preferred embodiment of the present invention.
The icon comprises a 10-user terminal, a 20-server, a 30-network, a 11- th storage, a 12- th processor, a 13- th communication unit, a 100-pad energization fracturing scheme generation device, a 21-second storage, a 22-second processor, a 23-second communication unit, a 110-reservoir model establishment module, a 120-recovery model simulation module, a 130-fracturing model simulation module, a 140-fracturing scheme generation module and a 150-corresponding relation establishment module.
Detailed Description
To further clarify the objects, aspects and advantages of embodiments of the present invention, reference will now be made in detail to the present embodiments of the invention as illustrated in the accompanying drawings, which are incorporated in this specification, and it is to be understood that the embodiments illustrated and described are some, but not all, of the embodiments of the invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once a item is defined in figures, it need not be further defined and explained by in subsequent figures.
In describing the present invention, it should be noted that unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are used to mean, for example, either fixedly connected, removably connected, or physically connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, and communicating between two elements.
Embodiments of the present invention are described in detail below with reference to the drawings, and features of the following examples and embodiments may be combined without conflict.
Referring to fig. 1, an interactive schematic diagram of a server 20 communicating with at least user terminals 10 according to a preferred embodiment of the present invention is provided, in which at least of the user terminals 10 are communicatively connected to the server 20, and the user terminals 10 can communicate with the server 20 through a network 30 to complete data communication or interaction with the server 20, so that an engineer can generate a fracturing scheme with an appropriate amount of energy-increasing fluid in front for wells of different conditions, thereby increasing the fracturing oil yield of the corresponding wells and increasing the oil production efficiency.
Referring to fig. 2, which is a block diagram of types of the user terminal 10 shown in fig. 1, in an embodiment of the present invention, the user terminal 10 may include a pad fracturing plan generating apparatus 100, a th memory 11, a th processor 12, and a th communication unit 13, the elements of the th memory 11, the th processor 12, and the th communication unit 13 are electrically connected to each other directly or indirectly to achieve data transmission or interaction, for example, the elements may be electrically connected to each other through or more communication buses or signal lines.
In this embodiment, the Memory 11 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), etc. in this embodiment, the Memory 11 may be used to store physical reservoir data, historical production data, and a corresponding reservoir model, wherein the physical reservoir data may be used to characterize the physical properties of the reservoir and the oil reservoir of the target well itself, the historical production data may be used to characterize the oil production data of the target well before the formation of the pad fracturing scheme provided by the present invention, the reservoir model may characterize the current reservoir conditions of the target well , wherein the second Memory 35 is used to execute the program execution instructions .
The th Processor 12 may be a kind of integrated circuit chip with signal Processing capability, the th Processor 12 may be a general purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), etc., a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable array (FPGA) or other programmable logic device, discrete or transistor logic, discrete hardware components, etc. the disclosed methods, steps, and logic blocks of the embodiments of the present invention may be implemented or performed.
The -th communication unit 13 is configured to establish a communication connection between the user terminal 10 and the server 20 via the network 30, and to transceive data via the network 30.
The pad fracturing plan generating device 100 comprises at least software functional modules which can be stored in the memory 11 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the user terminal 10, the processor 12 is configured to execute executable modules stored in the memory 11, such as software functional modules and computer programs included in the pad fracturing plan generating device 100, in the present embodiment, the pad fracturing plan generating device 100 may obtain reservoir physical data, historical production data and corresponding pressure change data of a target well from the server 20 through the communication unit 13, establish a reservoir model of the target well according to the reservoir physical data of the target well, simulate the oil production conditions when fracturing the target well under formation pressure recovery conditions at different injection amounts of the stimulation fluid and corresponding injection amounts of the stimulation fluid, select the optimal amount of the stimulation fluid from the reservoir models, and inject the optimal amount of stimulation fluid into the target well to increase the economic benefit of the stimulation fluid injection, and perform the optimal fracturing of the optimal amount of stimulation fluid injection into the target well.
It will be appreciated that the configuration shown in fig. 2 is merely an schematic diagram of the user terminal 10, and that the user terminal 10 may include more or fewer components than shown in fig. 2, or have a different configuration than shown in fig. 2, and that the components shown in fig. 2 may be implemented in hardware, software, or a combination thereof.
Referring to fig. 3, which is a block diagram of types of the server 20 shown in fig. 1, in an embodiment of the present invention, the server 20 includes a second memory 21, a second processor 22 and a second communication unit 23, each of the elements of the second memory 21, the second processor 22 and the second communication unit 23 are electrically connected to each other directly or indirectly to implement data transmission or interaction, for example, the elements may be electrically connected to each other through communication buses or signal lines.
The second memory 21 can store the physical oil reservoir data, the historical production data and the corresponding pressure variation data corresponding to different oil wells, the second processor 22 can be used for organizing the physical oil reservoir data, the historical production data and the pressure variation data of each oil well and storing the data into the second memory 21, the second communication unit 23 can establish a communication connection with the th communication unit 13 of the user terminal 10 through the network 30 so as to realize the transmission or interaction of data information, in the embodiment, the hardware configurations of the second memory 21, the second processor 22 and the second communication unit 23 are respectively the same as those of the th memory 11, the th processor 12 and the th communication unit 13 shown in fig. 2, and therefore, the is not described herein.
It is understood that the configuration shown in fig. 3 is merely an configuration schematic diagram of the server 20, and that the server 20 may include more or fewer components than shown in fig. 3, or have a different configuration than shown in fig. 3, the components shown in fig. 3 may be implemented in hardware, software, or a combination thereof.
Referring to fig. 4, it is a schematic view of flow charts of a pre-fluid energized fracturing scheme generation method according to a preferred embodiment of the present invention, the pre-fluid energized fracturing scheme generation method is applied to a user terminal 10 communicatively connected to a server 20, the second memory 21 of the server 20 stores physical reservoir data, historical production data, and corresponding pressure variation data of each oil well, and the specific flow charts and steps of the pre-fluid energized fracturing scheme generation method shown in fig. 4 are described in detail below.
In an embodiment of the present invention, the pad fluid energized fracturing scheme generation method includes the following steps:
step S310, acquiring physical oil deposit data of a target oil well, and establishing an oil deposit model corresponding to the target oil well according to the physical oil deposit data.
In this embodiment, the user terminal 10 may obtain, through the communication unit 13, the physical oil deposit data of the target oil well from the second storage 21 of the server 20, and may also obtain, from an external information input device, the physical oil deposit data of the target oil well by providing an information input interface capable of being electrically connected to the external information input device, where the physical oil deposit data includes oil well parameters, oil layer physical property parameters, rock mechanics parameters, and oil layer fluid high pressure physical property parameters of the target oil well, the oil well parameters include a well body structure, oil casing data, perforation section data, and well inclination data of the target oil well, the oil layer physical property parameters include physical properties of the oil layer in the target oil well, the oil layer physical property parameters include relative oil-water permeability data, reservoir porosity, permeability, and saturation data, the rock mechanics parameters include elastic characteristics of rock core, a young modulus, a poisson ratio, and a stress of the reservoir, the high pressure physical oil fluid parameters include a physical oil-water-gas ratio, a crude oil-water-gas ratio, and a crude oil-gas ratio.
In this embodiment, after acquiring the physical oil deposit data of the target oil well, the user terminal 10 classifies the acquired physical oil deposit data, and accordingly establishes an oil deposit model corresponding to the target oil well according to the physical oil deposit data.
And S320, simulating the stratum pressure recovery conditions of the target oil well under different injection quantities of the energizing liquid based on the oil reservoir model to obtain a corresponding stratum pressure recovery model.
In this embodiment, the formation pressure recovery condition is a specific condition that the formation pressure of the target oil well is recovered to the original formation pressure at different injection amounts of the energizing fluid. Specifically, when the injection amount of the energizing liquid is equal to the historical oil production amount and the water yield, the formation pressure of the target oil well is recovered to the original formation pressure; when the injection amount of the energizing liquid is 0, the formation pressure of the target oil well is the current formation pressure. Therefore, the stratum pressure recovery conditions of the target oil well under different injection quantities of the energizer can be simulated based on the oil reservoir model, and the stratum pressure recovery models corresponding to the different injection quantities of the energizer are obtained. Wherein the energizer fluid can be, but is not limited to, slickwater, active water, and the like.
And S330, simulating the oil production condition when the target oil well is fractured under different injection quantities of the energizing liquid based on the stratum pressure recovery model to obtain corresponding fracturing simulation models under different injection quantities of the energizing liquid and the corresponding relation between the oil production quantity and the production time.
In this embodiment, the user terminal 10 may simulate the oil production condition when fracturing the target oil well at different injection quantities of the energizing liquid on the formation pressure recovery models corresponding to the different injection quantities of the energizing liquid, to obtain a fracturing simulation model that can characterize the fracturing process of the target oil well at different injection quantities of the energizing liquid, and a corresponding relationship between the oil production quantity and the production time of the target oil well at different injection quantities of the energizing liquid.
Specifically, please refer to fig. 5, which is a flowchart illustrating the sub-steps included in step S330 shown in fig. 4. In an embodiment of the present invention, the step of simulating the oil production condition of fracturing the target oil well at different injection amounts of the stimulation fluid based on the formation pressure recovery model in step S330 may include substeps S331, S332 and S333. Wherein, the substep S331, the substep S332 and the substep S333 are as follows:
and a substep S331, calculating hydraulic fracture information when the target oil well is fractured according to the rock mechanical parameters of the target oil well to obtain corresponding hydraulic fracture information.
In this embodiment, the user terminal 10 may calculate, according to the rock mechanical parameters of the target oil well, the related information of the hydraulic fracture generated when the target oil well is fractured by combining the liquid amount and sand amount, the logging data, and the well data when no energizing liquid is injected in a normal condition, so as to obtain corresponding hydraulic fracture information. The hydraulic fracture information comprises hydraulic fracture length, hydraulic fracture width, hydraulic fracture height and fracture conductivity corresponding to the hydraulic fracture.
And S332, loading the hydraulic fracture information on the formation pressure recovery models corresponding to different injection quantities of the energizing liquid to obtain fracturing simulation models for fracturing the target oil well under different injection quantities of the energizing liquid.
In this embodiment, after acquiring the hydraulic fracture information when fracturing the target oil well under normal conditions, the user terminal 10 loads the hydraulic fracture information on the formation pressure recovery models corresponding to different injection quantities of the energizing fluid, so as to obtain fracture simulation models capable of representing the fracturing process of fracturing the target oil well under different injection quantities of the energizing fluid.
And a substep S333 of analyzing data of the fracturing simulation model to obtain a corresponding relation between the corresponding oil production and the production time.
In this embodiment, after obtaining the fracturing simulation models at different injection quantities of the stimulation fluid, the user terminal 10 performs data analysis on the fracturing simulation model corresponding to each injection quantity of the stimulation fluid to obtain a corresponding relationship between the oil production and the production time of the target oil well at each injection quantity of the stimulation fluid.
Specifically, the step of analyzing the data of the fracturing simulation model to obtain the corresponding relationship between the corresponding oil production and the production time includes:
and performing data analysis on the fracturing simulation models under different injection quantities of the energizing fluid according to the corresponding relation between the pressure change condition and the accumulated oil production of the target oil well and the hydraulic fracture conductivity when the target oil well is fractured, so as to obtain the corresponding relation between the oil production and the production time of the target oil well under different injection quantities of the energizing fluid.
And step S340, selecting the injection quantity of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection quantities of the energizing liquids according to the corresponding relation, and generating a corresponding fracturing scheme based on a fracturing simulation model corresponding to the injection quantity of the energizing liquid.
In this embodiment, the oil production efficiency is a ratio between an accumulated oil production amount of the target oil well in a preset production time period under the action of different injection amounts of the energizing fluid and the corresponding energizing fluid, and can represent the oil production amount of the target oil well in unit injection amount under different injection amounts of the energizing fluid; the economic benefit is an economic net present value between the economic value of the accumulated oil production of the target oil well in the preset production time period under the action of different injection quantities of the energizing fluid and the economic cost of the respective injection quantities of the energizing fluid, and the economic benefit can represent the production profit of the target oil well under different injection quantities of the energizing fluid. The user terminal 10 may select, according to a corresponding relationship between the oil production amount and the production time of the target oil well under different injection amounts of the energizing liquid, an injection amount of the energizing liquid that enables the target oil well to have the highest oil production efficiency or the highest economic benefit within a preset production time period from among the injection amounts of the energizing liquid, and generate a fracturing scheme provided with the injection amount of the energizing liquid based on a fracturing simulation model corresponding to the injection amount of the energizing liquid.
In an embodiment of the present invention, the step of selecting the injection amount of the stimulation fluid from the injection amounts of the stimulation fluids according to the corresponding relationship in step S340, wherein the injection amount of the stimulation fluid is selected to maximize the oil production efficiency or the economic benefit of the target oil well within the preset production time period, may include sub-step S341, sub-step S342, and sub-step S343, wherein the sub-step S341, sub-step S342, and sub-step S343 are as follows:
and a substep S341 of obtaining the accumulated total oil production amount of the target oil well in a preset production time period under different injection amounts of the energizing liquid according to the corresponding relation between the oil production amount and the production time of the target oil well under different injection amounts of the energizing liquid.
In this embodiment, the user terminal 10 may obtain the total accumulated oil production amount of the target oil well under the action of different injection amounts of the energizer fluid within a preset production time period according to the corresponding relationship between the oil production amount and the production time of the target oil well under different injection amounts of the energizer fluid. The preset production time period can be three years, four years or five years, and specific numerical values can be set by engineers according to the yield requirement.
And a substep S342, obtaining the oil production efficiency of the target oil well under different injection quantities of the energizing liquid according to the ratio relation between the total accumulated oil production quantity and the injection quantity of the respective corresponding energizing liquid, or obtaining the economic benefit of the target oil well under different injection quantities of the energizing liquid by carrying out net present value calculation on the economic value of the total accumulated oil production quantity and the economic cost of the injection quantity of the respective corresponding energizing liquid.
In this embodiment, when the user terminal 10 obtains the cumulative total oil production amount of the target oil well under the action of different injection amounts of the energizing liquid within a preset production time period, a ratio operation may be performed on each cumulative total oil production amount and the corresponding injection amount of the energizing liquid, so as to obtain the oil production efficiency of the target oil well under different injection amounts of the energizing liquid; and the economic benefits of the target oil well under different injection quantities of the energizing liquid can be obtained by carrying out net present value calculation on the economic value of each accumulated oil production total quantity and the economic cost of the corresponding energizing liquid injection quantity.
And a substep S343, selecting the energy increasing liquid injection amount with the highest oil production efficiency value or the highest economic benefit from the energy increasing liquid injection amounts.
In this embodiment, the user terminal 10 may select an injection amount of the stimulation fluid matching the target well from the injection amounts of the stimulation fluids according to the magnitude of the oil production efficiency value or the economic benefit value. Specifically, the user terminal 10 selects an energy-increasing fluid injection amount having the highest oil production efficiency value or the highest economic benefit from the energy-increasing fluid injection amounts as the energy-increasing fluid injection amount matched with the target oil well.
In this embodiment, the user terminal 10 may select the injection amount of the energizing liquid matched with the target oil well by using an oil production efficiency selection mode or an economic benefit selection mode under the control of an engineer, and the specific selection mode may be set by the engineer according to different requirements.
Referring to fig. 7, which is a schematic flow chart illustrating another sub-step included in step S340 shown in fig. 4, in an embodiment of the present invention, the step of generating a corresponding fracture plan based on the fracture simulation model corresponding to the injection amount of the energizing fluid in step S340 may include sub-steps S345 and S346, where the sub-steps S345 and S346 are as follows:
and step S345, calculating the pressure diffusion time around the hydraulic fracture in the fracturing simulation model based on the fracturing simulation model corresponding to the injection amount of the energizing liquid to obtain the corresponding pressure diffusion time.
In this embodiment, after selecting the injection amount of the stimulation fluid matching the target oil well, the user terminal 10 calculates the pressure diffusion time around the hydraulic fracture when the stimulation fluid is injected in the fracture simulation model corresponding to the injection amount of the stimulation fluid, so as to obtain the corresponding pressure diffusion time, where the pressure diffusion time is time periods, not a time point, and for example, the pressure diffusion time may be 3S to 5S.
And a substep S346 of selecting time with lower damage to the reservoir stratum of the target oil well from the pressure diffusion time as soaking time, and generating a corresponding fracturing scheme according to the injection amount of the energizing liquid, the fracturing simulation model and the soaking time.
In this embodiment, after obtaining the pressure diffusion time when the energizing fluid is injected into the hydraulic fracture, the user terminal 10 selects, in combination with the damage condition of the energizing fluid to the reservoir of the target oil well, a time with a low damage degree and a high stability degree to the reservoir of the target oil well from the pressure diffusion time as a soaking time, and generates a fracturing scheme with an injection amount of the energizing fluid in front corresponding to the target oil well according to the injection amount of the energizing fluid, the fracturing simulation model and the soaking time, so as to improve the fracturing oil yield of the target oil well and improve the oil production efficiency.
Referring to fig. 8, another flow charts of the method for generating a pad fluid energized fracturing plan according to the preferred embodiment of the present invention are shown, in the embodiment of the present invention, the method for generating a pad fluid energized fracturing plan may further include:
step S309, acquiring historical production data and corresponding pressure change data of the target oil well, and generating a corresponding relation between the pressure change condition of the target oil well and the accumulated oil production.
In this embodiment, the user terminal 10 may obtain the historical production data and the corresponding pressure variation data of the target well from the second memory 21 of the server 20, and generate the corresponding relationship between the pressure variation condition and the cumulative oil production of the target well according to the historical production data and the pressure variation data.
Referring to fig. 9, which is a block diagram of kinds of the pre-fluid energized fracturing plan generating device 100 shown in fig. 2 according to the preferred embodiment of the present invention, in the embodiment of the present invention, the pre-fluid energized fracturing plan generating device 100 includes a reservoir model establishing module 110, a recovery model simulating module 120, a fracturing model simulating module 130, and a fracturing plan generating module 140.
The reservoir model establishing module 110 is configured to obtain reservoir physical data of a target oil well, and establish a reservoir model corresponding to the target oil well according to the reservoir physical data.
In this embodiment, the reservoir model building module 110 may execute step S310 in fig. 4, and the detailed description may refer to the above detailed description of step S310.
The recovery model simulation module 120 is configured to simulate, based on the reservoir model, a formation pressure recovery condition of the target oil well under different injection amounts of the energizing liquid, so as to obtain a corresponding formation pressure recovery model.
In this embodiment, the recovery model simulation module 120 may execute step S320 in fig. 4, and the detailed description may refer to the above detailed description of step S320.
The fracturing model simulation module 130 is configured to simulate an oil production condition when the target oil well is fractured at different injection amounts of the energizing fluid based on the formation pressure recovery model, so as to obtain corresponding fracturing simulation models at different injection amounts of the energizing fluid and a corresponding relationship between the oil production amount and the production time.
In this embodiment, the manner of simulating the oil production condition of the target oil well when the fracturing model simulation module 130 fractures the target oil well at different injection amounts of the energizing fluid based on the formation pressure recovery model includes:
calculating hydraulic fracture information when the target oil well is fractured according to the rock mechanical parameters of the target oil well to obtain corresponding hydraulic fracture information;
loading the hydraulic fracture information on the stratum pressure recovery models corresponding to different injection quantities of the energizing liquid to obtain fracturing simulation models for fracturing the target oil well under different injection quantities of the energizing liquid;
and analyzing the data of the fracturing simulation model to obtain the corresponding relation between the corresponding oil production and the production time.
The fracture model simulation module 130 may execute step S330 in fig. 4, and sub-step S331, sub-step S332, and sub-step S333 in fig. 5, and the specific description may refer to the above detailed description of step S330, sub-step S331, sub-step S332, and sub-step S333.
The fracturing scheme generation module 140 is configured to select, according to the correspondence, an energizing liquid injection amount that enables the target oil well to have the highest oil production efficiency or the highest economic benefit within a preset production time period from among the energizing liquid injection amounts, and generate a corresponding fracturing scheme based on a fracturing simulation model corresponding to the energizing liquid injection amount.
In this embodiment, the manner of selecting the injection amount of the energizing liquid from the injection amounts of the energizing liquids by the fracturing plan generating module 140 according to the corresponding relationship, so that the target oil well has the highest oil production efficiency or the highest economic benefit within the preset production time period, includes:
obtaining the accumulated total oil production amount of the target oil well in a preset production time period under different injection quantities of the energizing liquid according to the corresponding relation between the oil production amount and the production time of the target oil well under different injection quantities of the energizing liquid;
obtaining the oil production efficiency of the target oil well under different injection quantities of the energizing liquid according to the ratio relation between the total accumulated oil production quantity and the injection quantity of the respective corresponding energizing liquid, or obtaining the economic benefits of the target oil well under different injection quantities of the energizing liquid by carrying out net present value calculation on the economic value of the total accumulated oil production quantity and the economic cost of the injection quantity of the respective corresponding energizing liquid;
and selecting the energizing liquid injection amount with the highest oil production efficiency value or the highest economic benefit from the energizing liquid injection amounts.
The way that the fracturing scheme generation module 140 generates the corresponding fracturing scheme based on the fracturing simulation model corresponding to the injection amount of the energizing fluid includes:
calculating the pressure diffusion time around the hydraulic fracture in the fracturing simulation model based on the fracturing simulation model corresponding to the injection amount of the energizing liquid to obtain the corresponding pressure diffusion time;
and selecting the time with the lowest damage to the reservoir of the target oil well from the pressure diffusion time as the soaking time, and generating a corresponding fracturing scheme according to the injection amount of the energizing liquid, the fracturing simulation model and the soaking time.
The fracturing scheme generating module 140 may execute step S340 in fig. 4, sub-step S341, sub-step S342, and sub-step S343 in fig. 6, and sub-step S345 and sub-step S346 in fig. 7, and the detailed description may refer to the detailed description of step S340, sub-step S341, sub-step S342, sub-step S343, sub-step S345, and sub-step S346 above.
Referring to fig. 10, another block diagrams of the pad fluid energized fracturing scheme generating device 100 shown in fig. 2 according to the preferred embodiment of the present invention are shown, in which in the embodiment of the present invention, the pad fluid energized fracturing scheme generating device 100 may further include a correspondence relationship establishing module 150.
The corresponding relationship establishing module 150 is configured to obtain historical production data and corresponding pressure change data of the target oil well, and generate a corresponding relationship between a pressure change condition of the target oil well and an accumulated oil production.
In this embodiment, the corresponding relationship establishing module 150 may execute step S309 in fig. 8, and the specific description may refer to the above detailed description of step S309.
In summary, in the method and the apparatus for generating a pad fluid energized fracturing scheme according to the preferred embodiment of the present invention, the application range of the method for generating a pad fluid energized fracturing scheme is capable of increasing the fracturing oil yield of a corresponding oil well by correspondingly generating a fracturing scheme with a suitable injection amount of an energizing fluid in advance for oil wells in different conditions.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1, A pad energized fracturing plan generation method, comprising:
acquiring oil deposit physical data of a target oil well, and establishing an oil deposit model corresponding to the target oil well according to the oil deposit physical data;
simulating the stratum pressure recovery conditions of the target oil well under different injection quantities of the energizing liquid based on the oil reservoir model to obtain a corresponding stratum pressure recovery model;
simulating the oil production condition when the target oil well is fractured under different injection quantities of the energizing liquid based on the stratum pressure recovery model to obtain corresponding fracturing simulation models under different injection quantities of the energizing liquid and the corresponding relation between the oil production quantity and the production time;
selecting the injection quantity of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection quantities of the energizing liquids according to the corresponding relation, and generating a corresponding fracturing scheme of the energizing liquid with the injection quantity of the energizing liquid in front based on a fracturing simulation model corresponding to the injection quantity of the energizing liquid;
the step of selecting the injection amount of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection amounts of the energizing liquids according to the corresponding relation comprises the following steps:
obtaining the accumulated total oil production amount of the target oil well in a preset production time period under different injection quantities of the energizing liquid according to the corresponding relation between the oil production amount and the production time of the target oil well under different injection quantities of the energizing liquid;
obtaining the oil production efficiency of the target oil well under different injection quantities of the energizing liquid according to the ratio relation between the total accumulated oil production quantity and the injection quantity of the respective corresponding energizing liquid, or obtaining the economic benefits of the target oil well under different injection quantities of the energizing liquid by carrying out net present value calculation on the economic value of the total accumulated oil production quantity and the economic cost of the injection quantity of the respective corresponding energizing liquid;
selecting the injection amount of the energizing liquid with the highest oil production efficiency value or the highest economic benefit from the injection amounts of the energizing liquids;
the step of generating a corresponding fracturing scheme of the energizing fluid with the pre-set energizing fluid injection amount based on the fracturing simulation model corresponding to the energizing fluid injection amount comprises the following steps:
calculating the pressure diffusion time around the hydraulic fracture in the fracturing simulation model based on the fracturing simulation model corresponding to the injection amount of the energizing liquid to obtain the corresponding pressure diffusion time;
and selecting time with low damage to the reservoir of the target oil well from the pressure diffusion time as soaking time, and generating a corresponding fracturing scheme according to the injection amount of the energizing liquid, the fracturing simulation model and the soaking time.
2. The method of claim 1, wherein the reservoir physics data comprises rock mechanics parameters of the target well, and wherein simulating production conditions when fracturing the target well at different stimulation fluid injection rates based on the formation pressure recovery model comprises:
calculating hydraulic fracture information when the target oil well is fractured according to the rock mechanical parameters of the target oil well to obtain corresponding hydraulic fracture information;
loading the hydraulic fracture information on the stratum pressure recovery models corresponding to different injection quantities of the energizing liquid to obtain fracturing simulation models for fracturing the target oil well under different injection quantities of the energizing liquid;
and analyzing the data of the fracturing simulation model to obtain the corresponding relation between the corresponding oil production and the production time.
3. The method of claim 2, wherein the step of analyzing the data of the fracture simulation model to obtain the corresponding relationship between the oil production and the production time comprises:
and performing data analysis on the fracturing simulation models under different injection quantities of the energizing fluid according to the corresponding relation between the pressure change condition and the accumulated oil production of the target oil well and the hydraulic fracture conductivity when the target oil well is fractured, so as to obtain the corresponding relation between the oil production and the production time of the target oil well under different injection quantities of the energizing fluid.
4. The method of claim 1, further comprising:
and acquiring historical production data and corresponding pressure change data of the target oil well, and generating a corresponding relation between the pressure change condition of the target oil well and the accumulated oil production.
5, A pad energized fracturing scheme generating device, the device comprising:
the oil reservoir model establishing module is used for acquiring oil reservoir physical data of a target oil well and establishing an oil reservoir model corresponding to the target oil well according to the oil reservoir physical data;
the recovery model simulation module is used for simulating the formation pressure recovery conditions of the target oil well under different injection quantities of the energizing liquid based on the oil reservoir model to obtain a corresponding formation pressure recovery model;
the fracturing model simulation module is used for simulating the oil production condition when the target oil well is fractured under different injection quantities of the energizing liquid based on the stratum pressure recovery model to obtain corresponding fracturing simulation models under different injection quantities of the energizing liquid and the corresponding relation between the oil production quantity and the production time;
the fracturing scheme generation module is used for selecting the injection amount of the energizing liquid which enables the oil production efficiency of the target oil well to be highest or the economic benefit to be highest in a preset production time period from the injection amounts of the energizing liquids according to the corresponding relation, and generating a corresponding fracturing scheme of the energizing liquid with the injection amount of the energizing liquid in front based on a fracturing simulation model corresponding to the injection amount of the energizing liquid;
the mode that the fracturing scheme generation module selects the injection amount of the energizing liquid which enables the target oil well to have the highest oil production efficiency or the highest economic benefit in the preset production time period from the injection amounts of the energizing liquids according to the corresponding relation comprises the following steps:
obtaining the accumulated total oil production amount of the target oil well in a preset production time period under different injection quantities of the energizing liquid according to the corresponding relation between the oil production amount and the production time of the target oil well under different injection quantities of the energizing liquid;
obtaining the oil production efficiency of the target oil well under different injection quantities of the energizing liquid according to the ratio relation between the total accumulated oil production quantity and the injection quantity of the respective corresponding energizing liquid, or obtaining the economic benefits of the target oil well under different injection quantities of the energizing liquid by carrying out net present value calculation on the economic value of the total accumulated oil production quantity and the economic cost of the injection quantity of the respective corresponding energizing liquid;
selecting the injection amount of the energizing liquid with the highest oil production efficiency value or the highest economic benefit from the injection amounts of the energizing liquids;
the mode that the fracturing scheme generation module generates the corresponding fracturing scheme based on the fracturing simulation model corresponding to the injection amount of the energizing liquid comprises the following steps:
calculating the pressure diffusion time around the hydraulic fracture in the fracturing simulation model based on the fracturing simulation model corresponding to the injection amount of the energizing liquid to obtain the corresponding pressure diffusion time;
and selecting time with low damage to the reservoir of the target oil well from the pressure diffusion time as soaking time, and generating a corresponding fracturing scheme according to the injection amount of the energizing liquid, the fracturing simulation model and the soaking time.
6. The apparatus of claim 5, further comprising:
and the corresponding relation establishing module is used for acquiring historical production data and corresponding pressure change data of the target oil well and generating a corresponding relation between the pressure change condition of the target oil well and the accumulated oil production.
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