CN115142827A - Fracturing process determination method, device, equipment and storage medium - Google Patents
Fracturing process determination method, device, equipment and storage medium Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The application provides a method, a device, equipment and a storage medium for determining a fracturing process, which comprise the following steps: acquiring basic information of a reservoir where a target well is located, and acquiring imbibition information of the reservoir; determining target fracturing parameter information based on the basic information and the imbibition information; determining a fracturing process based on the target fracturing parameter information.
Description
Technical Field
The application relates to the technical field of oil exploitation, in particular to a method, a device, equipment and a storage medium for determining a fracturing process.
Background
At present, fracturing process parameters of the compact oil, such as cluster spacing, scale and soaking time, are considered from the traditional construction point of view, for example, in the related technology, the soaking time is determined based on fracturing fluid performance parameters and the like. In the related technology, the imbibition research is not effectively compounded with the fracturing technology, namely, the fracturing technology based on the imbibition effect cannot be realized, and the imbibition efficiency cannot be fully exerted.
Disclosure of Invention
In order to solve the above problems, the present application provides a method, an apparatus, a device and a storage medium for determining a fracturing process.
The application provides a method for determining a fracturing process, which comprises the following steps:
acquiring basic information of a reservoir where a target well is located, and acquiring imbibition information of the reservoir;
determining target fracturing parameter information based on the basic information and the imbibition information;
determining a fracturing process based on the target fracturing parameter information.
In some embodiments, the imbibition information comprises: wettability and capillary force, wherein the basic information comprises average oil saturation, porosity, total fracture control volume and deficit fluid supplement amount, and the target fracturing parameter information comprises: the determination of the target fracturing parameter information based on the basic information and the imbibition information comprises the following steps:
determining a target fracturing fluid based on the lubricity and the capillary force;
determining a first ultimate recovery factor for the target fracturing fluid;
determining a total fluid imbibition volume based on the first limiting recovery, the average oil saturation, the porosity, and the total fracture control volume;
and determining the lower limit value of the sum of the total seepage and imbibition amount and the total deficit and fluid supplement amount as the injection amount of the target fracturing fluid.
In some embodiments, the target fracture parameter information further comprises: the formation pressure recovery degree, and the basic information further comprises: well control area, reservoir thickness, formation hydraulic pressure coefficient, formation pressure before fluid replacement, and the determining of the target fracturing parameter information based on the basic information and the imbibition information further comprises:
calculating the formation pressure after fluid replacement based on the injection amount of the target fracturing fluid, the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid replacement;
and determining the stratum pressure recovery degree of the reservoir stratum based on the stratum pressure after fluid infusion.
In some embodiments, the imbibition information comprises: imbibition stabilization time, the basic information comprising: the formation temperature, the target fracturing parameter information comprises: soaking time, wherein the target fracturing parameter information is determined based on the basic information and the imbibition information, and the method comprises the following steps:
determining the minimum time for the reservoir to complete imbibition as a first time based on the imbibition stabilization time;
determining a second time for the temperature of the target fracturing fluid to increase to the formation temperature;
determining the soak time based on the first time and the second time.
In some embodiments, the imbibition information comprises: imbibition stabilization time, the basic information comprising: and the oil drainage radius, wherein the target fracturing parameter information comprises: the soaking time, the determination of the target fracturing parameter information based on the basic information and the imbibition information, comprises the following steps:
and determining the soaking time based on the imbibition stable time and the oil drainage radius.
In some embodiments, the target fracture parameter information further comprises: a perforation parameter, wherein the determination of the target fracturing parameter information based on the basic information and the imbibition information further comprises:
determining a maximum distance of a imbibition front based on the soaking time;
determining twice the maximum distance as the upper limit of the cluster spacing during fracturing;
and determining perforation parameters according to the cluster spacing.
In some embodiments, the method further comprises:
determining construction parameters during fracturing based on the fracturing process;
and determining a pumping program based on the construction parameters.
The embodiment of the application provides a fracturing technology's confirming device, includes:
the acquisition module is used for acquiring basic information of a reservoir where a target well is located and acquiring imbibition information of the reservoir;
a first determination module for determining target fracturing parameter information based on the basic information and the imbibition information;
and the second determination module is used for determining the fracturing process based on the target fracturing parameter information.
The embodiment of the application provides a fracturing process determining device, which comprises a memory and a processor, wherein the memory is stored with a computer program, and the computer program is executed by the processor to execute any one of the fracturing process determining methods.
The present embodiments provide a storage medium storing a computer program, which can be executed by one or more processors, and can be used to implement any one of the methods for determining a fracturing process described above.
According to the method, the device, the equipment and the storage medium for determining the fracturing process, the basic information and the imbibition information of the reservoir are obtained, the target fracturing parameter information (such as the soaking time, the injection amount of the target fracturing fluid, the perforation parameter and the like) is determined based on the basic information and the imbibition information, and then the fracturing process is determined based on the target fracturing parameter information, so that the method, the device and the equipment have better adaptability to compact and reservoir and can improve the imbibition efficiency.
Drawings
The present application will be described in more detail below on the basis of embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic implementation flow chart of a determination method of a fracturing process provided in an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating an implementation of another determination method for a fracturing process provided in an embodiment of the present application;
fig. 3 is a schematic flow chart of a method for determining a fracturing process according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a determination device for a fracturing process according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a determining apparatus of a fracturing process provided in an embodiment of the present application.
In the drawings, like parts are designated with like reference numerals, and the drawings are not drawn to scale.
Detailed Description
In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the attached drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
The following description will be added if similar descriptions of "first \ second \ third" appear in the application file, and the terms "first \ second \ third" referred to in the following description are merely used for distinguishing similar objects and do not represent a specific ordering for the objects, it should be understood that "first \ second \ third" may be interchanged under the permission of a specific order or sequence, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application
Based on the problems in the related art, the embodiments of the present application provide a method for determining a fracturing process, which is applied to a determination device of a fracturing process, where the determination device of a fracturing process may be an electronic device, such as a computer, a mobile terminal, and the like. The functions implemented by the method for determining the fracturing process provided by the embodiment of the application can be implemented by calling program codes through a processor of the electronic device, wherein the program codes can be stored in a computer storage medium.
Example one
An embodiment of the present application provides a method for determining a fracturing process, and fig. 1 is a schematic flow chart illustrating an implementation of the method for determining a fracturing process provided in the embodiment of the present application, and as shown in fig. 1, the method includes:
and S101, acquiring basic information of a reservoir where a target well is located, and acquiring imbibition information of the reservoir.
In the embodiment of the application, the basic information of the reservoir is acquired through each measuring device, and can also be obtained based on partial basic information analysis. The basic information may be stored in a server from which the determination device of the fracturing process may retrieve the basic information of the reservoir. The basic information may include: average oil saturation, porosity, total joint control volume, void fluid supplement amount, well control area, reservoir thickness, formation water pressure coefficient, formation pressure before fluid supplement, formation temperature, drainage radius, pore throat structure, permeability, elastic modulus and the like.
The imbibition information of the reservoir can be obtained by carrying out an imbibition experiment on the basis of a real core of the reservoir or an artificial core manufactured on the basis of real parameters, the imbibition information can be stored in a server after being obtained through the imbibition experiment, and the determining equipment of the fracturing process obtains the imbibition information of the reservoir from the server. The imbibition information may include: second limit recovery, imbibition stability time, wetting angle, surface tension, wettability, and capillary forces, among others.
And S102, determining target fracturing parameter information based on the basic information and the imbibition information.
In an embodiment of the present application, the target fracturing parameter information may include a plurality of pieces, and the target fracturing parameter information may include: the injection amount of the target fracturing fluid, the stratum pressure recovery degree, the soaking time, the perforation parameters and the like. When the imbibition information includes: wettability and capillary force, wherein the basic information comprises average oil saturation, porosity, total fracture control volume and void fluid supplement amount, and the target fracturing parameter information comprises: the determination of the target fracturing parameter information based on the basic information and the imbibition information can be realized by the following steps: determining a target fracturing fluid based on the lubricity and the capillary force; determining a first ultimate recovery factor for the target fracturing fluid; determining a total fluid imbibition volume based on the first limiting recovery, the average oil saturation, the porosity, and the total fracture control volume; and determining the lower limit value of the sum of the total seepage and imbibition amount and the total deficit and fluid supplement amount as the injection amount of the target fracturing fluid.
In some embodiments, when the basic information further includes: the target fracturing parameter information further comprises the following information when the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid infusion are measured: the method for determining the target fracturing parameter information based on the basic information and the imbibition information may further include: calculating the formation pressure after fluid replacement based on the injection amount of the fracturing fluid, the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid replacement; and determining the stratum pressure recovery degree of the reservoir stratum based on the stratum pressure after fluid infusion.
In some embodiments, when the imbibition information comprises: imbibition stabilization time, the basic information including: the target fracturing parameter information comprises, at formation temperature: the soaking time, the determination of the target fracturing parameter information based on the basic information and the imbibition information, comprises the following steps: determining the minimum time for the reservoir to complete imbibition as a first time based on the imbibition stabilization time; determining a second time for the temperature of the target fracturing fluid to increase to the formation temperature; determining the soak time based on the first time and the second time.
In some embodiments, when the imbibition information comprises: imbibition stabilization time, the basic information comprising: when the oil drainage radius is large, the target fracturing parameter information comprises: the soaking time, the determination of the target fracturing parameter information based on the basic information and the imbibition information, comprises the following steps: and determining the soaking time based on the imbibition stable time and the oil drainage radius.
In some embodiments, the target fracture parameter information further comprises: a perforation parameter, said determining target fracturing parameter information based on said base information and said imbibition information, further comprising: determining a maximum distance of a imbibition front based on the soaking time; determining twice the maximum distance as the upper limit of the cluster spacing during fracturing; and determining perforation parameters according to the cluster spacing.
And S103, determining a fracturing process based on the target fracturing parameter information.
In the embodiment of the application, the corresponding relation between the fracturing process and each fracturing parameter can be stored in advance, and after the target fracturing parameter is determined, the corresponding fracturing process can be determined based on the target fracturing parameter information. In some embodiments, the fracturing process may be generated directly based on the target fracturing parameter information.
According to the method for determining the fracturing process, the basic information and the imbibition information of the reservoir are obtained, the target fracturing parameter information (such as the soaking time, the injection amount of the target fracturing fluid, the perforation parameter and the like) is determined based on the basic information and the imbibition information, and then the fracturing process is determined based on the target fracturing parameter information.
Example two
Based on the foregoing embodiment, an embodiment of the present application further provides a method for determining a fracturing process, and fig. 2 is a schematic flow chart illustrating an implementation of another method for determining a fracturing process provided in the embodiment of the present application, as shown in fig. 2, including:
step S201, obtaining basic information of a reservoir where a target well is located, and obtaining imbibition information of the reservoir.
In an embodiment of the present application, the imbibition information includes: wettability and tubular force, wherein the basic information comprises average oil saturation, porosity, total seam control volume, fluid loss and fluid supplement amount, well control area, reservoir thickness, formation hydraulic pressure coefficient and formation pressure before fluid supplement.
Step S202, determining a target fracturing fluid based on the lubricity and the capillary force.
In the embodiment of the application, in order to improve the imbibition recovery ratio, the key factors determining the imbibition recovery ratio are capillary force and wetting angle. The fracturing fluid is used as a medium for pressure transmission, and not only the crack formation and sand carrying performance but also the seepage effect on the contact surface of a reservoir layer need to be considered in seepage. Thus, in embodiments of the present application, the target fracturing fluid is determined by lubricity and capillary force. In the embodiment of the application, the corresponding relation between different lubricity and the pipe force and the fracturing fluid can be stored in advance.
In some embodiments, slickwater may be used as the main body of the fracturing fluid, and different fracturing fluid formulations are run by additives to obtain different fracturing fluids. Therefore, the corresponding relations between different lubricity and tubular force and the additive can be stored in advance, and after the lubricity and the tubular force are determined, the corresponding additive can be determined, so that the target fracturing fluid can be determined.
Step S203, determining a first ultimate recovery ratio of the target fracturing fluid.
In the embodiment of the application, the first ultimate recovery ratio corresponding to the target fracturing fluid can be obtained through experiments, the corresponding relation between the first ultimate recovery ratio and the target fracturing fluid is established, and after the target fracturing fluid is determined, the first ultimate recovery ratio corresponding to the target fracturing fluid can be determined.
Step S204, determining total imbibition volume based on the first ultimate recovery factor, the average oil saturation, the porosity and the total joint control volume.
In the examples of the present application, the total imbibition volume can be calculated by the formula (1), see the formula (1):
imbibition volume = ultimate recovery factor average oil saturation porosity total gap control volume (1);
and step S205, determining the lower limit value of the sum of the total seepage and imbibition amount and the total deficit and fluid supplement amount as the injection amount of the target fracturing fluid.
And S206, calculating the formation pressure after fluid replacement based on the injection amount of the target fracturing fluid, the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid replacement.
In the embodiment of the application, the bottom layer pressure after liquid supplementing can be calculated based on a material balance method. See formula (2) for the material balance formula:
Wi＝A·H·Φ·Cw·(Pi-Po) (2)；
in the formula, wi is the liquid injection amount; a is the well control area; h is reservoir thickness; phi is porosity; cw is the formation water compression coefficient; po is the formation pressure before fluid replenishment, and Pi is the formation pressure after fluid replenishment.
And step S207, determining the stratum pressure recovery degree of the reservoir stratum based on the stratum pressure after fluid infusion.
In the embodiment of the application, when the formation pressure after fluid infusion is determined, the formation pressure recovery degree of the reservoir can be determined.
And S208, determining a fracturing process based on the stratum pressure recovery degree and the injection amount of the target fracturing fluid.
According to the pressure process determining method provided by the embodiment of the application, the target fracturing fluid is determined through wettability, capillary force and basic information, the injection amount of the target fracturing fluid is calculated, the recovery degree of the formation pressure after fluid replacement is determined based on the injection amount, and the imbibition recovery rate can be improved when the fracturing process works based on the determined fracturing process through the target fracturing fluid, the injection amount of the formation pressure after fluid replacement and the recovery degree of the formation pressure after fluid replacement.
EXAMPLE III
Based on the foregoing embodiments, an embodiment of the present application further provides a method for determining a fracturing process, and fig. 3 is a schematic flow chart of an implementation of the method for determining a fracturing process provided in the embodiment of the present application, as shown in fig. 3, including:
step S301, obtaining the stratum temperature of the reservoir where the target well is located, and obtaining the imbibition stabilization time of the reservoir.
Step S302, based on the imbibition stable time, determining the minimum time for the reservoir to complete imbibition as a first time.
In the embodiment of the application, as the soaking time is mainly influenced by the imbibition speed, the minimum time of complete imbibition in the seam control range under the current fracture form can be determined as the first time by taking the imbibition temperature time as a reference, and the first time is taken as the initial lower limit of the soaking time.
Step S303, determining a second time for the temperature of the target fracturing fluid to rise to the formation temperature.
In the embodiment of the application, the time for the target fracturing fluid to rise to the formation temperature can be used as the second time, and the larger the difference value between the temperature of the target fracturing fluid and the formation temperature is, the faster the imbibition speed is, and the second time can be used as the initial lower limit of the soaking time.
Step S304, determining the soaking time based on the first time and the second time.
In the embodiment of the application, the first time and the second time are compared, the larger time is taken as the soaking time, namely, if the first time is larger than the second time, the first time is taken as the soaking time, and if the second time is larger than the first time, the second time is taken as the soaking time.
And S305, determining a fracturing process based on the soaking time.
According to the method for determining the fracturing process, the soaking time is determined according to the formation temperature and the imbibition stable time, the determined soaking time is more accurate, and further the imbibition efficiency can be improved.
Example four
Based on the foregoing embodiments, an embodiment of the present application further provides a method for determining a fracturing process, where the method includes:
and S401, acquiring the drainage radius of a reservoir where the target well is located, and acquiring the imbibition stable time of the reservoir.
And S402, determining the soaking time based on the imbibition stable time and the oil drainage radius.
In the embodiment of the application, the larger the oil drainage radius is, the longer the soaking time is.
And S403, determining the maximum distance of the imbibition front based on the soaking time.
And S404, determining twice of the maximum distance as the upper limit of the cluster spacing in fracturing.
In the embodiment of the application, twice of the maximum distance is determined as the upper limit of the cluster spacing in fracturing, so that the condition that the joints are not used can be prevented.
And S405, determining perforation parameters according to the cluster spacing.
In an embodiment of the application, the location of the reservoir requiring She Kai, i.e., the perforation parameters, may be determined based on the geological plan requirements and cluster spacing.
And step S406, determining a fracturing process based on the soaking time and the perforation parameters.
The determination method of fracturing technology that this application embodiment provided determines the soaking time through imbibition stability time, and then confirms the upper limit of cluster interval through the soaking time, can confirm the perforation parameter through the cluster interval, can prevent when carrying out fracturing technology, the condition that does not use between the seam appears, can promote the efficiency of imbibition.
EXAMPLE five
Based on the foregoing embodiments, embodiments of the present application provide a method for determining a fracturing process, where the method includes:
step S501, basic information acquisition.
Basic information of a reservoir where the target well is located, such as pore throat structure, permeability, oil saturation, ground stress, elastic modulus and other parameters, can be researched and analyzed.
The deficit condition of the target well can also be analyzed. The method comprises two conditions, wherein the first condition is a new well, but the formation pressure coefficient is lower than 1, and energy supplement is required according to the formation condition; and the second method is a produced old well, and the vacancy degree of each section needs to be calculated according to the analysis of the produced quantity to obtain the fluid infusion quantity.
Carrying out imbibition experiments by using a real core of a reservoir where a target well is located or an artificial core manufactured based on real parameters of the real core, wherein the target is to obtain information (the imbibition information in the embodiment) such as ultimate recovery ratio, imbibition stable time, wetting angle, surface tension and the like of the reservoir;
and step S502, analyzing the fracturing parameters based on the basic information.
The fracturing design method based on the imbibition effect firstly needs to combine the conventional fracturing design with imbibition. Parameters such as gap spacing, soaking time, scale, fracturing fluid properties and the like are determined mainly based on imbibition.
The quantitative evaluation index of the imbibition effect is the recovery ratio of imbibition, and the core factors determining the imbibition recovery ratio are capillary force and wetting angle. The fracturing fluid is used as a medium for pressure transmission, and not only the crack formation and sand carrying performance but also the seepage effect on the contact surface of a reservoir layer need to be considered in seepage. The effects of increasing capillary force and improving wetting angle can be realized through the additive (namely the change of the formula), and finally the functional fracturing fluid is formed to improve the imbibition recovery ratio;
the ultimate recovery ratio corresponding to the determined functional fracturing fluid can be obtained through experiments; through the determined ultimate recovery factor, the total imbibition amount can be determined according to the formula of 'imbibition amount = ultimate recovery factor x mean oil saturation x porosity x total suture control volume'; the lower limit of the total scale can be determined as the sum of the total seepage and suction liquid amount and the total deficit and fluid supplement amount;
after the lower limit of the overall scale is determined, the recovery degree of the formation pressure can be calculated according to a material balance method, and the formula is as follows:
Wi＝A·H·Φ·Cw·(Pi-Po)
in the formula, wi is the liquid injection amount; a is the well control area; h is reservoir thickness; phi is porosity; cw is the formation water compression coefficient; po is the formation pressure before fluid replenishment, and Pi is the formation pressure after fluid replenishment.
The time for achieving imbibition stability can be obtained according to an indoor experimental result, the expected soaking time can be obtained by combining the imbibition rate and the expected oil drainage radius, and obviously, the soaking time is longer when the oil drainage radius is larger;
under the condition of determined soaking time, the maximum distance of the imbibition front can be calculated, and the distance can be used as an optimization basis of the cluster spacing during fracturing, namely the upper limit of the cluster spacing is not higher than twice of the maximum distance of the imbibition front so as to prevent the condition that no power is used between seams;
step S503, designing a fracturing scheme.
Optimizing perforation parameters: determining the position of a reservoir to be jetted according to the geological scheme requirement, and considering that when a plurality of clusters are arranged in a section, the upper limit of the cluster spacing is not higher than twice of the maximum distance of the imbibition front so as to prevent the condition that no power is used between seams; the seepage effect is used as an index for evaluating the fracturing effect, so that the requirement on the fracture complexity (such as a fracture network) is not high, the requirement can be met by effectively expanding the main fracture and providing a seepage surface, and the complexity of the fracture does not need to be improved.
The fracturing material is preferably: the compact reservoir considers the combination of fluid and energy supplementation and seam making, and mainly uses functional slick water which is optimized for performances such as wettability, capillary force and the like; the sand-carrying effect is improved by properly mixing a certain proportion of glue solution, and a high flow guide channel is constructed.
Optimizing crack parameters: and optimizing the length of the half seam and the flow guiding capacity based on numerical simulation.
And (3) optimizing the fracturing scale: and (3) comprehensively considering the formation void volume and the imbibition volume to determine the lower limit of the fracturing scale, and combining the requirements of the half-seam length and the flow conductivity to obtain the intersection of the two required scales.
And (3) optimizing soaking time: the soaking time is mainly influenced by the imbibition speed, and on one hand, the minimum time of complete imbibition in the seam control range under the current fracture form is determined by taking the experimental imbibition stable time as a reference and is used as the lower limit of the soaking time; on the other hand, the temperature of the fracturing fluid is increased to the formation temperature as an index, the imbibition speed is higher as the temperature is higher, the time is also used as the lower limit of the soaking time, the soaking time is determined by integrating the temperature rise time and the imbibition stabilization time, and the soaking time with a larger value is taken as the soaking time in principle.
The process is preferably as follows: on the basis of the parameter optimization, related processes are optimized, construction parameters such as wellhead pressure and limit discharge capacity under the optimized process conditions are calculated, and a pumping program is further determined.
So far, the fracturing energy-complementing imbibition replacement scheme based on the imbibition effect is completed.
Example six
Based on the foregoing embodiments, the present application provides a device for determining a fracturing process, where the device includes modules and units included in the modules, and the modules may be implemented by a processor in a computer device; of course, the implementation can also be realized through a specific logic circuit; in the implementation process, the processor may be a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
The embodiment of the present application provides a determining apparatus for a fracturing process, fig. 4 is a schematic structural diagram of the determining apparatus for a fracturing process provided in the embodiment of the present application, and as shown in fig. 4, a determining apparatus 400 for a fracturing process includes:
the acquisition module 401 is configured to acquire basic information of a reservoir where a target well is located, and acquire imbibition information of the reservoir;
a first determining module 402, configured to determine target fracturing parameter information based on the basic information and the imbibition information;
a second determination module 403 for determining a fracturing process based on the target fracturing parameter information.
In some embodiments, the imbibition information comprises: wettability and capillary force, wherein the basic information comprises average oil saturation, porosity, total fracture control volume and void fluid supplement amount, and the target fracturing parameter information comprises: the first determination module 402 comprises:
a first determination unit for determining a target fracturing fluid based on the lubricity and the capillary force;
a second determination unit for determining a first ultimate recovery factor of the target fracturing fluid;
a third determination unit for determining a total imbibition volume based on the first ultimate recovery factor, the average oil saturation, the porosity, and the total joint control volume;
and the fourth determining unit is used for determining the lower limit value of the sum of the total seepage and imbibition amount and the total deficit and fluid supplement amount as the injection amount of the target fracturing fluid.
In some embodiments, the basic information further comprises: well control area, reservoir thickness, formation hydraulic pressure coefficient, formation pressure before fluid infusion, the target fracturing parameter information further includes: the formation pressure recovery degree, the first determining module 402, further comprises:
the calculation unit is used for calculating the formation pressure after fluid replacement based on the injection amount of the target fracturing fluid, the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid replacement;
and the fifth determining unit is used for determining the stratum pressure recovery degree of the reservoir based on the stratum pressure after the fluid infusion.
In some embodiments, the imbibition information comprises: imbibition stabilization time, the basic information including: the formation temperature, the target fracturing parameter information comprises: the soaking time, first determining module 402, includes:
a sixth determining unit, configured to determine, based on the imbibition stabilization time, that a minimum time for the reservoir to complete imbibition is the first time;
a seventh determining unit for determining a second time for the temperature of the target fracturing fluid to rise to the formation temperature;
an eighth determining unit, configured to determine the soaking time based on the first time and the second time.
In some embodiments, the imbibition information comprises: imbibition stabilization time, the basic information comprising: and the oil drainage radius, wherein the target fracturing parameter information comprises: the soaking time, first determining module 402, includes:
and the ninth determining unit is used for determining the soaking time based on the imbibition stable time and the oil drainage radius.
In some embodiments, the target fracture parameter information further comprises: the perforation parameter, the first determination module 402, further comprises:
a tenth determining unit, configured to determine a maximum distance of an imbibition front based on the soaking time;
an eleventh determining unit for determining twice the maximum distance as an upper limit of a cluster pitch at the time of fracturing;
and the twelfth determining unit is used for determining perforation parameters according to the cluster spacing.
In some embodiments, the apparatus 400 for determining a fracture process further comprises:
the third determination module is used for determining construction parameters during fracturing based on the fracturing process;
and the fourth determination module is used for determining a pumping program based on the construction parameters.
It should be noted that, in the embodiment of the present application, if the determination method of the fracturing process is implemented in the form of a software functional module and is sold or used as a stand-alone product, the determination method may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Accordingly, the present application provides a storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the determination method of the fracturing process provided in the above embodiments.
EXAMPLE seven
The embodiment of the application provides a device for determining a fracturing process; fig. 5 is a schematic structural diagram of a determining apparatus of a fracturing process provided in an embodiment of the present application, and as shown in fig. 5, the electronic apparatus 500 includes: a processor 501, at least one communication bus 502, a user interface 503, at least one external communication interface 504, and a memory 505. Wherein the communication bus 502 is configured to enable connective communication between these components. The user interface 503 may include a display screen, and the external communication interface 504 may include a standard wired interface and a wireless interface, among others. The processor 501 is configured to execute a program of a determination method of a fracturing process stored in the memory to implement the steps in the determination method of a fracturing process provided in the above-described embodiments.
The above description of the display device and storage medium embodiments, similar to the description of the method embodiments above, have similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the computer device and the storage medium of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a controller to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of determining a fracturing process, comprising:
acquiring basic information of a reservoir where a target well is located, and acquiring imbibition information of the reservoir;
determining target fracturing parameter information based on the basic information and the imbibition information;
determining a fracturing process based on the target fracturing parameter information.
2. The method of claim 1, wherein the imbibition information comprises: wettability and capillary force, wherein the basic information comprises average oil saturation, porosity, total fracture control volume and void fluid supplement amount, and the target fracturing parameter information comprises: the determination of the target fracturing parameter information based on the basic information and the imbibition information comprises the following steps:
determining a target fracturing fluid based on the lubricity and the capillary force;
determining a first ultimate recovery factor for the target fracturing fluid;
determining a total fluid imbibition volume based on the first limiting recovery, the average oil saturation, the porosity, and the total fracture control volume;
and determining the lower limit value of the sum of the total seepage and imbibition amount and the total deficit and fluid supplement amount as the injection amount of the target fracturing fluid.
3. The method of claim 2, wherein the basic information further comprises: well control area, reservoir thickness, formation water pressure coefficient, formation pressure before fluid infusion, and the target fracturing parameter information further comprises: the formation pressure recovery degree is determined based on the basic information and the imbibition information, and the method further comprises the following steps:
calculating the formation pressure after fluid replacement based on the injection amount of the target fracturing fluid, the well control area, the reservoir thickness, the formation water pressure coefficient and the formation pressure before fluid replacement;
and determining the stratum pressure recovery degree of the reservoir stratum based on the stratum pressure after fluid infusion.
4. The method of claim 1, wherein the imbibition information comprises: imbibition stabilization time, the basic information comprising: the formation temperature, the target fracturing parameter information comprises: the soaking time, the determination of the target fracturing parameter information based on the basic information and the imbibition information, comprises the following steps:
determining the minimum time for the reservoir to complete imbibition as a first time based on the imbibition stabilization time;
determining a second time for the temperature of the target fracturing fluid to increase to the formation temperature;
determining the soak time based on the first time and the second time.
5. The method of claim 1, wherein the imbibition information comprises: imbibition stabilization time, the basic information comprising: and the oil drainage radius, wherein the target fracturing parameter information comprises: the soaking time, the determination of the target fracturing parameter information based on the basic information and the imbibition information, comprises the following steps:
and determining the soaking time based on the imbibition stable time and the oil drainage radius.
6. The method according to any one of claims 4 or 5, wherein the target fracture parameter information further comprises: a perforation parameter, said determining target fracturing parameter information based on said base information and said imbibition information, further comprising:
determining a maximum distance of a imbibition front based on the soaking time;
determining twice the maximum distance as an upper limit of cluster spacing at fracture;
and determining perforation parameters according to the cluster spacing.
7. The method of claim 1, further comprising:
determining construction parameters during fracturing based on the fracturing process;
and determining a pumping program based on the construction parameters.
8. An apparatus for determining a fracturing process, comprising:
the acquisition module is used for acquiring basic information of a reservoir where a target well is located and acquiring imbibition information of the reservoir;
a first determination module for determining target fracturing parameter information based on the basic information and the imbibition information;
a second determination module to determine a fracturing process based on the target fracturing parameter information.
9. An apparatus for determining a fracturing process, comprising a memory and a processor, the memory having stored thereon a computer program which, when executed by the processor, performs the method of determining a fracturing process according to any one of claims 1 to 7.
10. A storage medium storing a computer program executable by one or more processors and operable to implement a method of determining a fracturing process as claimed in any one of claims 1 to 7.
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