CN116838318A - Reservoir encryption adjustment well productivity prediction method, device, equipment and medium - Google Patents

Reservoir encryption adjustment well productivity prediction method, device, equipment and medium Download PDF

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Publication number
CN116838318A
CN116838318A CN202310802415.XA CN202310802415A CN116838318A CN 116838318 A CN116838318 A CN 116838318A CN 202310802415 A CN202310802415 A CN 202310802415A CN 116838318 A CN116838318 A CN 116838318A
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China
Prior art keywords
developed
well
encryption
productivity
initial
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CN202310802415.XA
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Chinese (zh)
Inventor
罗启源
戴建文
黄余金
董毅夫
江健超
李松林
王伟峰
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China National Offshore Oil Corp Shenzhen Branch
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China National Offshore Oil Corp Shenzhen Branch
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Priority to CN202310802415.XA priority Critical patent/CN116838318A/en
Publication of CN116838318A publication Critical patent/CN116838318A/en
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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
    • E21B47/00—Survey of boreholes or wells
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/02—Agriculture; Fishing; Mining

Abstract

The embodiment of the application discloses a reservoir encryption adjustment well productivity prediction method, device, equipment and medium. The method comprises the following steps: the method comprises the steps of obtaining stable productivity of a sea-phase sandstone reservoir in the initial production stage of a developed adjustment well and stratum attribute information of an encryption adjustment well to be developed; determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the adjustment well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed; and determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by the inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed. By adopting the technical scheme of the embodiment of the application, the productivity prediction difficulty of the sea-phase sandstone reservoir encryption adjustment well is reduced, the productivity prediction efficiency is improved, and the blank of the initial yield prediction of the current sea-phase sandstone reservoir encryption adjustment well is filled; sensitivity analysis is carried out on the influence parameters affecting productivity, so that pertinence and efficiency of fitting work are improved.

Description

Reservoir encryption adjustment well productivity prediction method, device, equipment and medium
Technical Field
The embodiment of the application relates to the technical field of oilfield development, in particular to a reservoir encryption adjustment well productivity prediction method, device, equipment and medium.
Background
The development and adjustment well has important functions in the offshore oil field yield increase and production stabilization, and is important for improving the oil field development effect, the oil extraction speed and the final oil field recovery rate. The implementation of the well regulation is an important measure for regulating the well digging in the middle and later stages of offshore oil field development, and the continuous implementation of the well regulation according to local conditions is a necessary work for keeping long-term stable production of the oil field.
Offshore oil fields are usually developed in a 'low well high yield' mode for economic reasons, and from the production of a first well, the batch successive production of the well is regulated. Therefore, accurate prediction of interference and productivity between wells in different development stages is an important point for ensuring the oil reservoir development effect. At present, the method for researching the interference between wells can obtain productivity results, but in the initial stage of well design adjustment, interactive parameter fitting is difficult to realize rapidly due to the deficiency of calculation data.
Disclosure of Invention
The embodiment of the application provides a reservoir encryption adjustment well productivity prediction method, device, equipment and medium, so as to effectively predict the initial productivity of a newly-put-in encryption adjustment well of a sea-phase sandstone reservoir.
In a first aspect, an embodiment of the present application provides a reservoir encryption adjustment well productivity prediction method, including:
the method comprises the steps of obtaining stable productivity of a sea-phase sandstone reservoir in the initial production stage of a developed adjustment well and stratum attribute information of an encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well;
determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the adjustment well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed;
and determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by the inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed.
In a second aspect, an embodiment of the present application further provides a reservoir encryption adjustment well productivity prediction apparatus, including:
the information acquisition module is used for acquiring the stable productivity of the sea-phase sandstone reservoir in the initial production stage of the developed adjustment well and the stratum attribute information of the encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well;
the initial productivity formula determining module is used for determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the production initial of the developed adjustment well and the stratum attribute information of the encryption adjustment well to be developed;
and the productivity influence factor determining module is used for determining a target influence factor influencing the initial productivity of the encryption adjustment well to be developed according to the initial productivity formula of the encryption adjustment well to be developed.
In a third aspect, an embodiment of the present application further provides an electronic device, including:
one or more processors;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the reservoir encryption trim well productivity prediction method according to any embodiment of the present application.
In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, where a computer program is stored, where the program when executed by a processor implements the reservoir encryption adjustment well productivity prediction method according to any embodiment of the present application.
The embodiment of the application provides a reservoir encryption adjustment well productivity prediction method, a device, electronic equipment and a storage medium, which are used for obtaining stable productivity of a sea-phase sandstone reservoir developed adjustment well in the production initial stage and stratum attribute information of the encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well; determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the adjustment well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed; and determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by the inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed. By adopting the technical scheme of the embodiment of the application, the productivity prediction difficulty of the sea-phase sandstone reservoir encryption adjustment well is reduced, the productivity prediction efficiency is improved, and the blank of the initial yield prediction of the current sea-phase sandstone reservoir encryption adjustment well is filled; sensitivity analysis is carried out on the influence parameters affecting productivity, so that pertinence and efficiency of fitting work are improved; aiming at the development characteristics of the sea-phase sandstone reservoir encryption adjustment well, the productivity prediction method is more in line with the development characteristics of the sea-phase sandstone reservoir and actual geological conditions, and the accuracy of the plate fitting is higher.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a flow chart of a reservoir encryption trim well productivity prediction method provided in an embodiment of the present application;
FIG. 2 is a flow chart of another reservoir encryption trim well productivity prediction method provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of a relationship between the M1 layer capacity ratio of an XX-1 oilfield and the production time interval provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a relationship between the M2 layer capacity ratio of an XX-1 oilfield and the production time interval provided in an embodiment of the present application;
FIG. 5 is a schematic diagram of a relationship between the M3 layer capacity ratio of an XX-2 oilfield and the production time interval provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of a reservoir encryption adjustment well productivity prediction apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings.
Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations (or steps) can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
The technical scheme of the application obtains, stores, uses and processes the data and the like all conform to the relevant regulations of national laws and regulations.
Fig. 1 is a flowchart of a reservoir encryption adjustment well productivity prediction method provided in an embodiment of the present application, where the embodiment is applicable to a case of predicting the reservoir encryption adjustment well productivity of marine facies sandstone, and the method of the embodiment may be performed by a reservoir encryption adjustment well productivity prediction device, and the device may be implemented in a hardware and/or software manner. The device can be configured in a server for reservoir encryption adjustment well productivity prediction. The method specifically comprises the following steps:
s110, stable productivity of the sea-phase sandstone reservoir in the production initial stage of the developed adjustment well is obtained, and stratum attribute information of the encrypted adjustment well to be developed is obtained.
The sea-phase sandstone reservoir can be a strong-edge bottom water reservoir and has the characteristics of high energy, ultrahigh permeability, high liquid production strength and the like, and the sea-phase sandstone reservoir comprises, but is not limited to, a developed adjusting well and an encryption adjusting well to be developed, and the developed adjusting well is adjacent to the encryption adjusting well to be developed. For economic consideration, offshore oil fields are usually developed in a 'few wells and high yield' mode, and starting from the production of a first well, the batch successive production of the wells is adjusted; for example, after the development of the developed trim well is started, the trim well to be developed adjacent to the developed trim well is developed. The encryption adjustment well can be used for improving dead oil areas which are not affected by water injection in order to excavate unused oil reservoir, and adjusting wells drilled with poor transverse and longitudinal oil extraction development effects.
As an alternative but non-limiting implementation manner, the obtaining stable productivity of the initial production stage of the sea-phase sandstone reservoir developed adjustment well and formation attribute information of the encrypted adjustment well to be developed includes but is not limited to steps A1-A2:
step A1: and obtaining stable productivity of the sea-phase sandstone reservoir at the initial production stage of the developed regulating well according to the dynamic production data of the developed regulating well.
Step A2: acquiring stratum attribute information of an encryption adjustment well to be developed of a sea-phase sandstone reservoir according to drilling data; the formation property information includes permeability, fluid viscosity, formation raw pressure, and wellbore radius.
The productivity may refer to the productivity or oil production capacity of an oil well, and is used for characterizing the injection and production conditions and development effects of the oil field. The productivity is used for describing the oil production capacity of each adjustment well of the sea-phase sandstone reservoir, and the productivity is used for describing the development effect of each adjustment well.
In an alternative embodiment of the present application, the capacity at which the initial capacity of the developed trim well is stable may be obtained based on the production dynamics data of the developed trim well. According to the drilling data, stratum attribute information of an encryption adjustment well to be developed can be obtained; the formation property information may refer to property information capable of describing formation characteristics of a sea-phase sandstone reservoir, including, but not limited to, permeability, fluid viscosity, formation raw pressure, and wellbore radius.
And S120, determining an initial capacity formula of the encryption adjustment well to be developed according to the stable capacity of the well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed.
The method comprises the steps of predicting the productivity of each encryption adjustment well of the marine sea-phase sandstone reservoir, wherein the sea-phase sandstone reservoir comprises a side water reservoir and a bottom water reservoir, predicting the initial productivity of the encryption adjustment well of the side water reservoir and the initial productivity of the encryption adjustment well of the bottom water reservoir, and determining the initial productivity formulas of the encryption adjustment well to be developed for the side water reservoir and the encryption adjustment well to be developed for the bottom water reservoir, referring to fig. 2.
As an optional but non-limiting implementation manner, determining the initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the initial production period of the adjustment well to be developed and the stratum attribute information of the encryption adjustment well to be developed, including but not limited to steps B1-B2:
step B1: converting the simultaneous production of two horizontal wells in the side water oil reservoir into the simultaneous production of a plurality of rows of horizontal wells in an infinite stratum, and determining the potential of any point in the side water oil reservoir stratum by adopting the potential superposition principle and a Beziet summation formula; wherein the sea-phase sandstone oil reservoir comprises a side water oil reservoir and a bottom water oil reservoir.
Step B2: and determining an initial productivity formula of the encryption adjustment well to be developed for the side water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the side water reservoir stratum.
The method comprises the steps of converting the simultaneous production of two horizontal wells in a reservoir into the simultaneous production of multiple rows of horizontal wells in an infinite stratum by using a mirror image reflection method, and establishing an expression of any point potential in the stratum by using a potential superposition principle and a Beziet summation formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,can be the potential of the combined flow at any point, q can be the productivity (strength of the produced liquid) per unit thickness, h i Can be used for encrypting and adjusting the reservoir thickness of the well i, r i May refer to the distance from any point in the formation to the i-well, C may refer to a constant and is related to boundary conditions, and x and y are the coordinates of any point in the formation.
Determining the potential of the boundary of the encryption adjustment well to be developed and the potential of the bottom position of the encryption adjustment well to be developed; and determining an initial capacity formula of the encryption adjustment well to be developed for the side water reservoir according to the potential of the boundary of the encryption adjustment well to be developed and the potential of the bottom hole position:
wherein Q is A Characterization of edge water reservoirsTo-be-developed encryption adjusting well initial productivity, K represents side water reservoir permeability and mu o Characterization of the fluid viscosity of the side Water reservoir, B is the volume coefficient, P e Is the original pressure of stratum, P wfA Is the bottom-hole flow pressure of the side water reservoir, q B For adjacent well capacity (e.g., developed trim well capacity), L A The length of the well is adjusted by encryption to be developed, b is the distance between the well and the top of the reservoir, r w For the borehole radius, z A Eccentricity of A, z B The eccentricity of B.
As an optional but non-limiting implementation manner, the determining the preliminary productivity formula of the encryption adjustment well to be developed according to the stable productivity of the initial production stage of the adjustment well to be developed and the formation attribute information of the encryption adjustment well to be developed further includes but is not limited to steps C1-C2:
step C1: and determining the potential of any point in the bottom water reservoir stratum by adopting a mirror image reflection principle and a Beziet summation formula.
Step C2: and determining an initial productivity formula of the encryption adjustment well to be developed for the bottom water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the stratum of the bottom water reservoir.
For a bottom water oil reservoir, namely an oil reservoir produced by developing a well pattern with smaller well spacing, the inter-well interference has a larger influence on the production of an oil well. Assuming that the top of the reservoir is a closed boundary and the oil-water interface is a constant pressure boundary, calculating the initial capacity formula of the to-be-developed encryption adjustment well of the bottom water reservoir according to the mirror image reflection principle and the Besset formula, wherein the initial capacity formula is as follows:
wherein Q is 1 Representing initial productivity of a bottom water reservoir to-be-developed encryption adjustment well, wherein L is the length of the bottom water reservoir to-be-developed encryption adjustment well, and P is the length of the bottom water reservoir to-be-developed encryption adjustment well w1 Is bottom water reservoir bottom hole flow pressure, mu is bottom water reservoir fluid viscosity, Z w Characterizing the eccentricity.
S130, determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed.
The inter-well interference may be that when an oil well or a water injection well on the same oil layer is opened, a certain oil well or water injection well changes a working system, and influences the pressure, the productivity or the water injection quantity of the adjacent oil well or water injection well. For example, if the working system of the developed adjustment well is adjusted, the productivity of the encryption adjustment well to be developed adjacent to the developed adjustment well will have a certain effect.
As an optional but non-limiting implementation manner, the determining the target influencing factor that the inter-well interference influences the initial productivity of the encryption adjustment well to be developed according to the initial productivity formula of the encryption adjustment well to be developed includes but is not limited to steps D1-D2:
step D1: and determining the corresponding relation between the length of the encryption adjustment well to be developed and the capacity of the encryption adjustment well to be developed and the corresponding relation between the stable capacity of the production initial stage of the adjustment well to be developed and the initial capacity of the encryption adjustment well to be developed according to the initial capacity formula of the encryption adjustment well to be developed of the side water reservoir.
According to the obtained initial capacity formula of the encryption adjustment well to be developed of the side water reservoir, the length of the encryption adjustment well to be developed can be determined to be positively correlated with the capacity of the encryption adjustment well to be developed, and the stable capacity of the encryption adjustment well to be developed at the initial stage of production is negatively correlated with the capacity of the encryption adjustment well to be developed at the initial stage.
Step D2: and determining the influence of the well spacing between the developed adjusting well and the to-be-developed encryption adjusting well on the initial productivity of the to-be-developed encryption adjusting well according to the initial productivity formula of the to-be-developed encryption adjusting well of the bottom water reservoir.
According to the obtained initial productivity formula of the bottom water reservoir to be developed and encrypted, the method has no influence on the interference between wells when the pressure difference between the bottom hole flow pressure and the original stratum pressure is changed; however, as the well spacing increases, the smaller the effect of inter-well interference, the smaller the loss of capacity of the well to be developed for encryption adjustment.
As an optional but non-limiting implementation manner, the determining the target influencing factor that the inter-well interference influences the initial productivity of the encryption adjustment well to be developed according to the initial productivity formula of the encryption adjustment well to be developed further includes but is not limited to steps E1-E2:
step E1: determining at least two influencing factors influencing the initial productivity of the encryption adjustment well to be developed; the at least two influencing factors include interwell distance, interwell azimuth, and operating regimes that have been developed to adjust the well.
Step E2: and determining target influence factors which influence the initial productivity of different reservoirs from the at least two influence factors according to the initial productivity formula of the encryption adjustment well to be developed.
And carrying out parameter sensitivity analysis on influence factors influencing the initial capacity of the encryption adjustment well to be developed, and determining the influence of each influence factor on the initial capacity of the encryption adjustment well to be developed. For example, during the inter-well intervention phase, the pressure curve and pressure derivative curve of the well to be developed will exhibit upwarp characteristics; and the larger the dimensionless yield is, the larger the upwarp degree is, but the pressure derivative curve finally tends to be horizontal.
In an alternative of the embodiment of the application, other parameters are kept constant, the distance between two wells is changed, as the interval between the wells is smaller, the interference signal of the interference well is transmitted to the bottom of the observation well faster, the interference transition phase appears in advance on the well test curve, the pressure curve rises slowly, and as the interval between the wells is smaller, the productivity of the observation well is smaller. The interference well may refer to a developed adjustment well in the embodiment of the present application, and the observation well may refer to an encryption adjustment well to be developed.
In another alternative of the embodiment of the application, the influence of different inter-well azimuth angles on the well test curve is analyzed, and when the non-dimensional distance between the wells is smaller than 2, the influence of the inter-well azimuth angles on the interference well pressure signal transmission can be obviously reflected. The interfering well is located in the extending direction of the artificial fracture, and the high pressure guiding capacity of the fracture enables the interfering pressure waves to be transmitted into the observation well more quickly.
In yet another alternative of embodiments of the present application, the production well is disturbed for a long period of time, which will create a quasi-steady pressure drop at the observation well, resulting in a later downward shift of the pressure derivative curve. And in the case of production well production reduction, the drop amplitude (compared with the case of injection increase of a water injection well) under the pressure derivative curve of the observation well is larger.
In the embodiment of the application, the initial productivity formulas of the encryption adjustment well to be developed of the side water reservoir and the bottom water reservoir are analyzed to determine the target influence factors influencing the initial productivity of the encryption adjustment well to be developed, so as to obtain the initial productivity prediction layout of the encryption adjustment well to be developed, as shown in fig. 3, 4 and 5. The reservoir encryption adjustment well productivity prediction method provided by the embodiment of the application is more in line with the development characteristics of the sea-phase sandstone reservoir, so that the encryption adjustment well design result is more reasonable.
The embodiment of the application provides a reservoir encryption adjustment well productivity prediction method, which comprises the steps of obtaining stable productivity of a sea-phase sandstone reservoir developed adjustment well in the production initial stage and stratum attribute information of the encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well; determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the adjustment well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed; and determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by the inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed. By adopting the technical scheme of the embodiment of the application, the productivity prediction difficulty of the sea-phase sandstone reservoir encryption adjustment well is reduced, the productivity prediction efficiency is improved, and the blank of the initial yield prediction of the current sea-phase sandstone reservoir encryption adjustment well is filled; sensitivity analysis is carried out on the influence parameters affecting productivity, so that pertinence and efficiency of fitting work are improved; aiming at the development characteristics of the sea-phase sandstone reservoir encryption adjustment well, the productivity prediction method is more in line with the development characteristics of the sea-phase sandstone reservoir and actual geological conditions, and the accuracy of the plate fitting is higher.
Fig. 6 is a schematic structural diagram of an apparatus for predicting the productivity of an oil reservoir encryption adjustment well according to an embodiment of the present application, where the technical solution of the present embodiment may be suitable for use in predicting the productivity of an offshore marine sandstone oil reservoir encryption adjustment well, and the apparatus may be implemented by software and/or hardware and generally integrated on any electronic device having a network communication function, where the electronic device includes, but is not limited to: server, computer, personal digital assistant, etc. As shown in fig. 6, the reservoir encryption adjustment well productivity prediction apparatus provided in this embodiment may include:
the information obtaining module 610 is configured to obtain stable productivity of the sea-phase sandstone reservoir at a production start stage of the developed adjustment well and formation attribute information of the encrypted adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well;
the initial capacity formula determining module 620 is configured to determine an initial capacity formula of the encryption adjustment well to be developed according to the stable capacity of the initial production stage of the developed adjustment well and the formation property information of the encryption adjustment well to be developed;
and the productivity influence factor determining module 630 is configured to determine a target influence factor that influences the initial productivity of the encryption adjustment well to be developed according to the initial productivity formula of the encryption adjustment well to be developed.
On the basis of the foregoing embodiment, optionally, the information obtaining module includes:
according to the dynamic production data of the developed adjustment well, obtaining stable productivity of the sea-phase sandstone reservoir at the initial production stage of the developed adjustment well;
acquiring stratum attribute information of an encryption adjustment well to be developed of a sea-phase sandstone reservoir according to drilling data; the formation property information includes permeability, fluid viscosity, formation raw pressure, and wellbore radius.
On the basis of the foregoing embodiment, optionally, the initial capacity formula determining module includes:
converting the simultaneous production of two horizontal wells in the side water oil reservoir into the simultaneous production of a plurality of rows of horizontal wells in an infinite stratum, and determining the potential of any point in the side water oil reservoir stratum by adopting the potential superposition principle and a Beziet summation formula; wherein the sea-phase sandstone oil reservoir comprises a side water oil reservoir and a bottom water oil reservoir;
and determining an initial productivity formula of the encryption adjustment well to be developed for the side water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the side water reservoir stratum.
On the basis of the foregoing embodiment, optionally, the initial capacity formula determining module further includes:
determining the potential of any point in the bottom water reservoir stratum by adopting a mirror image reflection principle and a Beziet summation formula;
and determining an initial productivity formula of the encryption adjustment well to be developed for the bottom water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the stratum of the bottom water reservoir.
On the basis of the foregoing embodiment, optionally, the capacity influencing factor determining module includes:
determining the corresponding relation between the length of the encryption adjustment well to be developed and the capacity of the encryption adjustment well to be developed and the corresponding relation between the stable capacity of the production initial stage of the adjustment well to be developed and the initial capacity of the encryption adjustment well to be developed according to the initial capacity formula of the encryption adjustment well to be developed of the side water reservoir;
and determining the influence of the well spacing between the developed adjusting well and the to-be-developed encryption adjusting well on the initial productivity of the to-be-developed encryption adjusting well according to the initial productivity formula of the to-be-developed encryption adjusting well of the bottom water reservoir.
On the basis of the foregoing embodiment, optionally, the capacity influencing factor determining module further includes:
determining at least two influencing factors influencing the initial productivity of the encryption adjustment well to be developed; the at least two influencing factors comprise inter-well distance, inter-well azimuth and working system of the developed and adjusted well;
and determining target influence factors which influence the initial productivity of different reservoirs from the at least two influence factors according to the initial productivity formula of the encryption adjustment well to be developed.
The reservoir encryption adjustment well productivity prediction device provided by the embodiment of the application can execute the reservoir encryption adjustment well productivity prediction method provided by any embodiment of the application, has the corresponding functions and beneficial effects of executing the reservoir encryption adjustment well productivity prediction method, and the detailed process refers to the related operation of the reservoir encryption adjustment well productivity prediction method in the embodiment.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 10 is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the applications described and/or claimed herein.
As shown in fig. 7, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as reservoir encryption trim well productivity prediction methods.
In some embodiments, the reservoir encryption trim well productivity prediction method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more of the steps of the reservoir encryption trim well productivity prediction method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the reservoir encryption trim well productivity prediction method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present application may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present application, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present application are achieved, and the present application is not limited herein.
The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.

Claims (10)

1. A reservoir encryption adjustment well productivity prediction method, the method comprising:
the method comprises the steps of obtaining stable productivity of a sea-phase sandstone reservoir in the initial production stage of a developed adjustment well and stratum attribute information of an encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well;
determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the adjustment well to be developed in the initial production period and the stratum attribute information of the encryption adjustment well to be developed;
and determining a target influence factor for influencing the initial productivity of the encryption adjustment well to be developed by the inter-well interference according to the initial productivity formula of the encryption adjustment well to be developed.
2. The method of claim 1, wherein the obtaining stable capacity of the sea sand reservoir at the beginning of production of the developed trim well and formation property information of the to-be-developed freeze trim well comprises:
according to the dynamic production data of the developed adjustment well, obtaining stable productivity of the sea-phase sandstone reservoir at the initial production stage of the developed adjustment well;
acquiring stratum attribute information of an encryption adjustment well to be developed of a sea-phase sandstone reservoir according to drilling data; the formation property information includes permeability, fluid viscosity, formation raw pressure, and wellbore radius.
3. The method of claim 1, wherein determining the preliminary productivity formula of the encryption adjustment well to be developed based on the stable productivity of the preliminary production of the developed adjustment well and the formation property information of the encryption adjustment well to be developed comprises:
converting the simultaneous production of two horizontal wells in the side water oil reservoir into the simultaneous production of a plurality of rows of horizontal wells in an infinite stratum, and determining the potential of any point in the side water oil reservoir stratum by adopting the potential superposition principle and a Beziet summation formula; wherein the sea-phase sandstone oil reservoir comprises a side water oil reservoir and a bottom water oil reservoir;
and determining an initial productivity formula of the encryption adjustment well to be developed for the side water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the side water reservoir stratum.
4. The method of claim 1, wherein determining the preliminary productivity formula for the well to be developed based on the stable productivity for the well to be developed at the initial stage of production and the formation property information for the well to be developed at the encrypted adjustment, further comprises:
determining the potential of any point in the bottom water reservoir stratum by adopting a mirror image reflection principle and a Beziet summation formula;
and determining an initial productivity formula of the encryption adjustment well to be developed for the bottom water reservoir according to the stable productivity of the developed adjustment well in the initial production period, the stratum attribute information of the encryption adjustment well to be developed and the potential of any point in the stratum of the bottom water reservoir.
5. The method of claim 1, wherein determining a target influencing factor for influencing the initial productivity of the encryption adjustment well to be developed based on the initial productivity formula of the encryption adjustment well to be developed, the target influencing factor comprising:
determining the corresponding relation between the length of the encryption adjustment well to be developed and the capacity of the encryption adjustment well to be developed and the corresponding relation between the stable capacity of the production initial stage of the adjustment well to be developed and the initial capacity of the encryption adjustment well to be developed according to the initial capacity formula of the encryption adjustment well to be developed of the side water reservoir;
and determining the influence of the well spacing between the developed adjusting well and the to-be-developed encryption adjusting well on the initial productivity of the to-be-developed encryption adjusting well according to the initial productivity formula of the to-be-developed encryption adjusting well of the bottom water reservoir.
6. The method of claim 5, wherein determining a target influencing factor for influencing the initial capacity of the encryption adjustment well to be developed based on the initial capacity formula of the encryption adjustment well to be developed, the method further comprising:
determining at least two influencing factors influencing the initial productivity of the encryption adjustment well to be developed; the at least two influencing factors comprise inter-well distance, inter-well azimuth and working system of the developed and adjusted well;
and determining target influence factors which influence the initial productivity of different reservoirs from the at least two influence factors according to the initial productivity formula of the encryption adjustment well to be developed.
7. An oil reservoir encryption adjustment well productivity prediction apparatus, comprising:
the information acquisition module is used for acquiring the stable productivity of the sea-phase sandstone reservoir in the initial production stage of the developed adjustment well and the stratum attribute information of the encryption adjustment well to be developed; the sea sand reservoir comprises a developed adjusting well and a to-be-developed encryption adjusting well, and the developed adjusting well is adjacent to the to-be-developed encryption adjusting well;
the initial productivity formula determining module is used for determining an initial productivity formula of the encryption adjustment well to be developed according to the stable productivity of the production initial of the developed adjustment well and the stratum attribute information of the encryption adjustment well to be developed;
and the productivity influence factor determining module is used for determining a target influence factor influencing the initial productivity of the encryption adjustment well to be developed according to the initial productivity formula of the encryption adjustment well to be developed.
8. The apparatus of claim 7, wherein the information acquisition module comprises:
according to the dynamic production data of the developed adjustment well, obtaining stable productivity of the sea-phase sandstone reservoir at the initial production stage of the developed adjustment well;
acquiring stratum attribute information of an encryption adjustment well to be developed of a sea-phase sandstone reservoir according to drilling data; the formation property information includes permeability, fluid viscosity, formation raw pressure, and wellbore radius.
9. An electronic device, comprising:
one or more processors;
a storage means for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the reservoir encryption trim well productivity prediction method of any one of claims 1-6.
10. A storage medium containing computer executable instructions, which when executed by a computer processor are for performing the reservoir encryption trim well productivity prediction method of any one of claims 1-6.
CN202310802415.XA 2023-06-30 2023-06-30 Reservoir encryption adjustment well productivity prediction method, device, equipment and medium Pending CN116838318A (en)

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CN202310802415.XA CN116838318A (en) 2023-06-30 2023-06-30 Reservoir encryption adjustment well productivity prediction method, device, equipment and medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310802415.XA CN116838318A (en) 2023-06-30 2023-06-30 Reservoir encryption adjustment well productivity prediction method, device, equipment and medium

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CN116838318A true CN116838318A (en) 2023-10-03

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Country Link
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