CN113033859A - Method and device for predicting cumulative yield of crude oil in straight descending period - Google Patents
Method and device for predicting cumulative yield of crude oil in straight descending period Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for predicting the cumulative yield of crude oil in a straight descending period, wherein the method comprises the following steps: obtaining oil production data of a target linear degressive production well; acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data; obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value; and acquiring the crude oil cumulative yield of the straight decreasing period according to the stable annual yield of the decreasing production year 1, the average difference value and the oil well initial annual decreasing rate, wherein the prediction precision of the crude oil cumulative yield of the straight decreasing period is improved by acquiring the crude oil cumulative yield of the straight decreasing period by using the stable annual yield of the decreasing production year 1, the average difference value and the oil well initial annual decreasing rate.
Description
Technical Field
The invention relates to the technical field of oil field exploration and development, in particular to a method and a device for predicting the cumulative yield of crude oil in a straight descending period.
Background
In the process of oil well development, the yield data of the oil well is mainly analyzed to research the yield decreasing rule after the oil well is put into operation and predict the future yield decreasing trend so as to guide the development of an oil reservoir and the measure adjustment work of the oil well.
Specifically, the prediction of the future capacity of the straight-line degressive production oil well can be realized by calculating the accumulated yield of the crude oil of the oil well at any time point in the degressive period, so that the accumulated yield of the oil well is a core parameter for measuring the production capacity of the oil well and is also an essential parameter for making an oil field development scheme.
At present, three oil well yield decreasing types are exponential decreasing, hyperbolic decreasing and harmonic decreasing, and the application range of decreasing indexes is defined as n is more than or equal to 0 and less than or equal to 1; in practical applications, the range of application of the decreasing exponent n in the hyperbolic decreasing type is extended to (-10, 10) or (— infinity, + ∞), and is referred to as "generalized Arps decreasing theory":
wherein D isyiInitial annual rate of decline, f; n is a decreasing index; n is a radical ofyFor decreasing crude cumulative production (q-free)0And previous yield), m3；Q 0 Initial annual yield, m3/a；QyTo decrease the steady annual production of the y year of production, m3A; y-decreasing production calendar year (y is more than or equal to 1), a.
When the decreasing index n is-1, the linear decreasing period stable annual production formula (1) of the generalized Arps decreasing theory is transformed into a linear decreasing oil well stable annual production formula:
Qy＝Q 0 (1-yDyi) (3)
when the decreasing index n is-1, the formula (2) of the crude oil cumulative production in the straight decreasing period of the generalized Arps decreasing theory is deformed as follows:
when the generalized Arps decreasing theory is applied to calculate the crude oil cumulative yield in the straight decreasing period, the crude oil cumulative yield in the straight decreasing period can be calculated after the initial annual yield and the initial annual decreasing rate of the oil well are determined by regression in the form of a formula (3).
Through the arithmetic series analysis and comparison of the stable annual output of the ideal straight line decreasing period, the formula (4) is adopted to calculate the accumulated output of the crude oil of the ideal straight line decreasing period, and obvious deviation exists.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a method and apparatus for predicting cumulative crude oil production during a straight descending period, an electronic device, and a computer readable storage medium, which can at least partially solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, there is provided a method of predicting cumulative production of straight diminishing phase crude oil, comprising:
obtaining oil production data of a target linear degressive production well;
acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data;
obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value;
and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
Further, the obtaining the average difference of the stable annual output of the 1 st year of the decreasing production and the adjacent stable annual output of the oil well according to the oil production data comprises:
obtaining the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of a linear degressive period according to the oil production data;
and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average day of degressive production per month, the initial daily output before degressive production of the oil well and the stable daily output in the linear degressive period.
Further, the obtaining of the average difference value of the adjacent stable annual production of the oil wells according to the average number of production days decreased per month, the initial daily production before the oil well decreased production and the stable daily production in the linear decreasing period comprises:
acquiring an initial daily decrement rate according to the initial daily output before the oil well decremental production and the stable daily output in the linear decremental period;
and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average number of production days decreased every month, the initial daily output before the oil well is decreased and the initial daily decrement rate.
Further, the average difference value of the adjacent stable annual output of the oil well is obtained according to the average number of production days decreased per month, the initial daily output of the oil well before the decreased production and the initial daily decrement rate, and the method is realized by adopting the following formula:
Qy-1-Qy＝(12m)2q0Ddi
wherein Q isy-1-QyAverage difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q0Indicating the initial daily production before the well is degressive, DdiIndicating the initial daily decrement rate.
Further, the obtaining of the initial annual declining rate of the oil well according to the stable annual yield of the 1 st year of the declining production and the average difference value is realized by adopting the following formula:
wherein D isyiIndicates the initial annual rate of decline, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyRepresenting the average difference in adjacent stable annual production of the well.
Further, the step of obtaining the cumulative yield of crude oil in the straight decreasing period according to the stable annual yield of the decreasing production year 1, the average difference value and the initial annual decreasing rate of the oil well is realized by adopting the following formula:
wherein N isyRepresents the cumulative yield of crude oil in the y-th year of linear decreasing production of the oil well, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyMean difference, D, representing adjacent stable annual production of a wellyiIndicating the initial annual rate of decline.
In a second aspect, there is provided an apparatus for predicting cumulative production of crude oil over a straight diminishing period, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linear decreasing production well;
the average difference value acquisition module is used for acquiring the average difference value of the stable annual output of the descending production year 1 and the adjacent stable annual output of the oil well according to the oil production data;
the initial annual decrement rate obtaining module is used for obtaining the initial annual decrement rate of the oil well according to the stable annual yield of the 1 st year of the degressive production and the average difference value;
and the prediction module is used for acquiring the accumulated yield of the crude oil in the straight descending period according to the stable annual yield of the descending production year 1, the average difference value and the initial annual descending rate of the oil well.
Further, the average difference value obtaining module includes:
the parameter acquisition unit is used for acquiring the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of a linear degressive period according to the oil production data;
and the average difference value acquisition unit is used for acquiring the average difference value of the adjacent stable annual output of the oil wells according to the average descending production days per month, the initial daily output before descending production of the oil wells and the stable daily output in the linear descending period.
In a third aspect, an electronic device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method for predicting cumulative production of crude oil during a straight diminishing period when executing the program.
In a fourth aspect, a computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, carries out the steps of the above-described method of predicting cumulative production of crude oil over a straight diminishing period.
The embodiment of the invention provides a method and a device for predicting the cumulative yield of crude oil in a straight descending period, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: obtaining oil production data of a target linear degressive production well; acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data; obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value; and acquiring the crude oil cumulative yield of the straight decreasing period according to the stable annual yield of the decreasing production year 1, the average difference value and the oil well initial annual decreasing rate, wherein the prediction precision of the crude oil cumulative yield of the straight decreasing period is improved by acquiring the crude oil cumulative yield of the straight decreasing period by using the stable annual yield of the decreasing production year 1, the average difference value and the oil well initial annual decreasing rate.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of an architecture between a server S1 and a client device B1 according to an embodiment of the present invention;
FIG. 2 is a block diagram of the server S1, the client device B1 and the database server S2 according to an embodiment of the present invention;
FIG. 3 is a schematic flow diagram of a method of predicting linear diminishing phase cumulative production of crude oil in an embodiment of the present invention;
FIG. 4 is a cross-plot of the decreasing production calendar year of an oil well and the stable annual production of a straight line decreasing period
Fig. 5 shows the specific steps of step S200 in fig. 3;
FIG. 6 shows the detailed steps of step S220 in FIG. 5;
FIG. 7 is a block diagram of an apparatus for predicting cumulative production of straight-line pull-down crude in an embodiment of the present invention;
fig. 8 shows a specific structure of the average difference value acquisition module 20 in fig. 7;
fig. 9 is a block diagram of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
By analyzing and comparing the arithmetic series of the stable annual output of the ideal straight line decreasing period, the prior art is adopted to calculate the accumulated output of the crude oil of the ideal straight line decreasing period, and obvious deviation exists.
To at least partially solve the technical problems in the prior art, an embodiment of the present invention provides a method for predicting cumulative production of crude oil in a straight decreasing period, which improves the accuracy of predicting the cumulative production of crude oil in the straight decreasing period by obtaining the cumulative production of crude oil in the straight decreasing period through the stable annual production of the decreasing production year 1, the average difference value and the initial annual decreasing rate of the oil well.
In view of the above, the present application provides an apparatus for predicting cumulative production of crude oil during a straight pull-down period, which may be a server S1, see fig. 1, where the server S1 may be communicatively connected to at least one client device B1, the client device B1 may transmit oil production data of a target straight pull-down production well to the server S1, and the server S1 may receive the oil production data of the target straight pull-down production well online. The server S1 may perform online or offline preprocessing on the acquired oil production data of the target linear degressive production well, and acquire the stable annual output of the degressive production in the 1 st year and the average difference value between the adjacent stable annual outputs of the oil wells according to the oil production data; obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value; and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well. The server S1 may then send the straight diminishing period crude cumulative production online to the client device B1. The client device B1 may receive the straight diminishing period cumulative production of crude oil online.
Additionally, referring to FIG. 2, the server S1 may also be communicatively coupled to at least one database server S2, the database server S2 configured to store production data for a target straight-line decreasing production well. According to the prediction instruction of the client device B1, the database server S2 sends the oil production data of the target straight-line decreasing production well to the server S1 on line, and the server S1 can receive the oil production data of the target straight-line decreasing production well on line and obtain the average difference value of the stable annual output of the decreasing production in the 1 st year and the adjacent stable annual output of the oil well according to the oil production data; obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value; and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
It is understood that the client device B1 may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a Personal Digital Assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Wherein, intelligence wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..
In practical applications, the part of predicting the cumulative production of crude oil during the straight-line depletion period may be performed at the server S1 side as described above, i.e., the architecture shown in fig. 1, or all operations may be performed at the client device B1, and the client device B1 may be directly connected to the database server S2 in communication. Specifically, the selection may be performed according to the processing capability of the client device B1, the limitation of the user usage scenario, and the like. This is not a limitation of the present application. If all of the operations are performed at the client device B1, the client device B1 may further include a processor for performing specific processes for predicting the cumulative production of crude oil for the straight pull down period.
The server and the client device may communicate using any suitable network protocol, including network protocols not yet developed at the filing date of this application. The network protocol may include, for example, a TCP/IP protocol, a UDP/IP protocol, an HTTP protocol, an HTTPS protocol, or the like. Of course, the network Protocol may also include, for example, an RPC Protocol (Remote Procedure Call Protocol), a REST Protocol (Representational State Transfer Protocol), and the like used above the above Protocol.
FIG. 3 is a schematic flow chart of a method of predicting linear decreasing crude cumulative production in an embodiment of the present invention. As shown in fig. 3, the method for predicting the cumulative production of crude oil during the straight-line decreasing period may include:
step S100: obtaining oil production data of a target linear degressive production well;
the oil well adopts oil field development equipment and a corresponding production mode to extract oil in a target oil reservoir, and oil well oil production data are obtained through corresponding storage and transportation equipment in the process of extracting the oil.
Step S200: acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data;
specifically, the stable annual output of the 1 st year of degressive production can be counted according to the oil production data, and the average difference value of the adjacent stable annual outputs of the oil wells can be calculated according to the oil production data.
Step S300: obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value;
step S400: and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
It is worth explaining that the prediction of the future capacity of the linearly decreasing production oil well can be realized by calculating the accumulated yield of the crude oil at any time point of the decreasing period of the oil well, so that the accumulated yield of the oil well is a core parameter for measuring the production capacity of the oil well and is also a necessary parameter for making an oil field development scheme, and further is used for making an oil field development scheme required in industry, guiding the development and production of the oil field and realizing long-term and medium-term planning of the oil field.
In summary, according to the method for predicting the cumulative yield of crude oil in the straight decreasing period provided by the embodiment of the invention, the cumulative yield of crude oil in the y-th year of the decreasing production of the oil well in the decreasing period is calculated according to the average difference of the adjacent stable annual yields in the decreasing period of the oil well and the initial annual decreasing rate, so that the prediction accuracy of the cumulative yield of crude oil in the straight decreasing period is improved.
According to the attribute characteristics of the equipartition data series of the stable annual output of the oil well in the linear decreasing period, the calculation formula of the stable annual output of the linear decreasing period is derived, the calculated stable annual output deviation of the linear decreasing period is small, and a convenient, accurate and effective prediction scheme is provided for oil deposit capacity evaluation and oil field exploration and development planning.
It is worth explaining that any oil well enters a yield decreasing production stage along with the development time, and when the annual yield change of the decreasing production stage belongs to a linear decreasing type, a crude oil cumulative yield prediction method of the oil well in the linear decreasing period is established based on the yield decreasing change rule of the oil well, so that errors existing when the crude oil cumulative yield in the linear decreasing period is calculated by utilizing a generalized Arps decreasing theory are eliminated, and a convenient, accurate and effective crude oil cumulative yield prediction scheme is provided for the productivity evaluation and medium and long term planning of a linear decreasing production evaluation unit. The method for predicting the crude oil cumulative yield of the straight descending stage can objectively evaluate the crude oil cumulative yield of the straight descending stage, and is particularly suitable for predicting the crude oil cumulative yield of the straight descending stage determined by oil reservoirs developed in various modes at various stages of oil field exploration and development.
In addition, the change of the stable annual output of the oil well in the linear decreasing period is controlled by the initial annual decreasing rate, the smaller the initial annual decreasing rate is, the smaller the slope of the linear decreasing production of the stable annual output is, and the slower the linear decreasing production of the stable annual output is; the greater the initial annual rate of decline, the greater the slope of the steady annual production linear decline production, and the faster the steady annual production decline, see fig. 4.
In an alternative embodiment, referring to fig. 5, this step S200 may include the following:
step S210: and acquiring the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of the linear degressive period according to the oil production data.
Specifically, the stable annual production for the 1 st year of declining production and the average days of declining production per month can be counted from the oil production data. In addition, the decreasing production starting time of the oil well can be counted according to the oil production data, and then the initial daily yield of the oil well before decreasing production is found according to the decreasing production starting time of the oil well.
Step S220: and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average day of degressive production per month, the initial daily output before degressive production of the oil well and the stable daily output in the linear degressive period.
Specifically, referring to fig. 6, this step S220 may include the following:
step S221: and obtaining an initial daily decrement rate according to the initial daily output before the oil well decremental production and the stable daily output in the linear decremental period.
Specifically, the following formula can be used:
wherein D isdiInitial daily decrement rate, f; q. q.s0For wells with decreasing initial daily production, m3/d；q1To decrease the steady daily output on day 1 of production, m3/d。
By adopting the scheme, the initial daily decrement rate can be accurately calculated, and the prediction precision is further improved.
Step S222: and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average number of production days decreased every month, the initial daily output before the oil well is decreased and the initial daily decrement rate.
Specifically, the following formula is adopted for implementation:
Qy-1-Qy＝(12m)2q0Ddi
wherein Q isy-1-QyAverage difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q0Indicating the initial daily production before the well is degressive, DdiIndicating the initial daily decrement rate.
It is worth noting that the difference between any adjacent stable annual production rates of linearly decreasing production wells is constant.
In an alternative embodiment, the step S300 can be implemented by the following formula:
wherein D isyiIndicates the initial annual rate of decline, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyRepresenting the average difference in adjacent stable annual production of the well.
By adopting the technical scheme, the initial annual decrement rate can be accurately calculated, and the prediction precision is further improved.
In an alternative embodiment, the step S400 is implemented by the following formula:
wherein N isyRepresents the cumulative yield of crude oil in the y-th year of linear decreasing production of the oil well, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyMean difference, D, representing adjacent stable annual production of a wellyiIndicating the initial annual rate of decline.
By adopting the technical scheme, the cumulative yield of the crude oil in the y-th year of the degressive production of the oil well in the degressive period is calculated according to the average difference value of the adjacent stable annual yields in the degressive period of the oil well and the initial annual decrement rate, so that the prediction precision of the cumulative yield of the crude oil in the linear degressive period is improved.
The method for predicting the cumulative production of crude oil in a straight decreasing period provided by the invention is illustrated as follows:
the cumulative yield of crude oil before the descending production of the L3 well is 380m3The stable daily yield, the stable annual yield and the cumulative yield of crude oil in the descending period of the oil well are shown in an L3 well descending production data table (table 1), and the cumulative yield of crude oil in the descending period of the L3 well in the 3 rd year of descending production is calculated.
Table 1: l3 well straight line degressive production data table
In a first step, the average difference between adjacent stable annual productivities of the wells in the decline period is determined:
Qy-1-Qy＝4500m3/a
second, calculate the initial annual rate of decline of the L3 well:
thirdly, calculating the cumulative yield of the crude oil in the 3 rd decreasing period of the linear decreasing production of the L3 well:
based on the same inventive concept, the embodiments of the present application further provide an XX apparatus, which can be used to implement the methods described in the foregoing embodiments, as described in the following embodiments. Since the principle of solving the problem of the XX device is similar to that of the method, the XX device can be implemented by the method, and repeated details are omitted. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
FIG. 7 is a block diagram I of an apparatus for predicting cumulative production of straight-line pull-down crude oil according to an embodiment of the present invention. As shown in fig. 7, the apparatus for predicting the cumulative production of crude oil during the straight decreasing period specifically includes: the system comprises an oil production data acquisition module 10, an average difference acquisition module 20, an initial annual reduction rate acquisition module 30 and a prediction module 40.
The oil production data acquisition module 10 acquires oil production data of a target linear decreasing production well;
the average difference value acquisition module 20 acquires the average difference value of the stable annual output of the descending production 1 st year and the adjacent stable annual output of the oil well according to the oil production data;
the initial annual decrement rate obtaining module 30 obtains the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the degressive production and the average difference value;
the prediction module 40 obtains a straight diminishing period cumulative yield of crude oil based on the steady annual yield for the 1 st year of declining production, the average difference value, and the initial annual decline rate for the well.
In summary, the device for predicting the cumulative yield of crude oil in the straight descending stage provided by the embodiment of the invention calculates the cumulative yield of crude oil in the y-th year of the descending production of the oil well in the descending stage according to the average difference of the adjacent stable annual yields in the descending stage of the oil well and the initial annual descending rate, thereby improving the prediction accuracy of the cumulative yield of crude oil in the straight descending stage.
In an alternative embodiment, referring to fig. 8, the average difference value obtaining module 20 may include: a parameter acquiring unit 21 and an average difference acquiring unit 22.
The parameter acquiring unit 21 acquires the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of the linear degressive period according to the oil production data;
the average difference value obtaining unit 22 obtains the average difference value of the adjacent stable annual output of the oil wells according to the average descending production days per month, the initial daily output before descending production of the oil wells and the stable daily output of the straight descending period.
The apparatuses, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or implemented by a product with certain functions. A typical implementation device is an electronic device, which may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
In a typical example, the electronic device specifically includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the following steps when executing the program:
obtaining oil production data of a target linear degressive production well;
acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data;
obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value;
and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
As can be seen from the above description, the electronic device provided in the embodiment of the present invention may be configured to predict the cumulative yield of crude oil in the straight decreasing period, and improve the prediction accuracy of the cumulative yield of crude oil in the straight decreasing period by obtaining the cumulative yield of crude oil in the straight decreasing period through the stable annual yield of the decreasing production year 1, the average difference value, and the initial annual decreasing rate of the oil well.
Referring now to FIG. 9, shown is a schematic diagram of an electronic device 600 suitable for use in implementing embodiments of the present application.
As shown in fig. 9, the electronic apparatus 600 includes a Central Processing Unit (CPU)601 that can perform various appropriate works and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM)) 603. In the RAM603, various programs and data necessary for the operation of the system 600 are also stored. The CPU601, ROM602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output portion 607 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted as necessary on the storage section 608.
In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, an embodiment of the invention includes a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, performs the steps of:
obtaining oil production data of a target linear degressive production well;
acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data;
obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value;
and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
As can be seen from the foregoing description, the computer-readable storage medium provided by the embodiments of the present invention can be used for predicting the cumulative yield of crude oil in the straight decreasing period, and the accuracy of predicting the cumulative yield of crude oil in the straight decreasing period is improved by obtaining the cumulative yield of crude oil in the straight decreasing period by using the stable annual yield of the decreasing production 1 year, the average difference value, and the initial annual decreasing rate of the oil well.
In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should also be noted that 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for predicting cumulative production of crude oil over a straight diminishing period, comprising:
obtaining oil production data of a target linear degressive production well;
acquiring the stable annual output of the descending production year 1 and the average difference value of the adjacent stable annual outputs of the oil wells according to the oil production data;
obtaining the initial annual decrement rate of the oil well according to the stable annual output of the 1 st year of the decremental production and the average difference value;
and acquiring the cumulative yield of crude oil in a straight decreasing period according to the stable annual yield of the 1 st year of decreasing production, the average difference value and the initial annual decreasing rate of the oil well.
2. The method of predicting cumulative production of crude oil over a straight diminishing period of claim 1, wherein said obtaining an average difference between steady annual production for the 1 st year of diminishing production and adjacent steady annual production for a well from said production data comprises:
obtaining the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of a linear degressive period according to the oil production data;
and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average day of degressive production per month, the initial daily output before degressive production of the oil well and the stable daily output in the linear degressive period.
3. The method of predicting cumulative straight-line pull-down crude oil production as set forth in claim 2 wherein said obtaining an average difference between adjacent stable annual productivities of wells based on said average days of pull-down production per month, initial daily production before pull-down production of wells, and stable daily production of straight-line pull-down comprises:
acquiring an initial daily decrement rate according to the initial daily output before the oil well decremental production and the stable daily output in the linear decremental period;
and acquiring the average difference value of the adjacent stable annual output of the oil well according to the average number of production days decreased every month, the initial daily output before the oil well is decreased and the initial daily decrement rate.
4. The method of predicting cumulative production of crude oil over a straight diminishing period of claim 3, wherein said obtaining an average difference between adjacent stable annual productivities of wells based on said average days of diminishing production per month, said initial daily production of wells before diminishing production and said initial daily decline rate is performed using the following equation:
Qy-1-Qy＝(12m)2q0Ddi
wherein Q isy-1-QyAverage difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q0Indicating the initial daily production before the well is degressive, DdiIndicating the initial daily decrement rate.
5. The method of predicting cumulative production of crude oil over a straight diminishing period of claim 1, wherein said obtaining an initial annual rate of decline for the well based on said steady annual production for the 1 st year of decline and said average difference is performed using the following equation:
wherein D isyiIndicates the initial annual rate of decline, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyRepresenting the average difference in adjacent stable annual production of the well.
6. The method of predicting cumulative production of crude oil over a straight diminishing period according to claim 1, wherein said obtaining cumulative production of crude oil over a straight diminishing period based on said steady annual production at the 1 st year of diminishing production, said average difference value and said initial annual rate of decline of said well is performed by using the following formula:
wherein N isyRepresents the cumulative yield of crude oil in the y-th year of linear decreasing production of the oil well, Q 1 Representing steady annual production at 1 year of decreasing production, m3/a；Qy-1-QyMean difference, D, representing adjacent stable annual production of a wellyiIndicating the initial annual rate of decline.
7. An apparatus for predicting cumulative production of crude oil over a straight pull-down period, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linear decreasing production well;
the average difference value acquisition module is used for acquiring the average difference value of the stable annual output of the descending production year 1 and the adjacent stable annual output of the oil well according to the oil production data;
the initial annual decrement rate obtaining module is used for obtaining the initial annual decrement rate of the oil well according to the stable annual yield of the 1 st year of the degressive production and the average difference value;
and the prediction module is used for acquiring the accumulated yield of the crude oil in the straight descending period according to the stable annual yield of the descending production year 1, the average difference value and the initial annual descending rate of the oil well.
8. The apparatus for predicting cumulative production of crude oil over a straight diminishing period according to claim 7, wherein said average difference obtaining module comprises:
the parameter acquisition unit is used for acquiring the stable annual output of the 1 st year of degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the stable daily output of a linear degressive period according to the oil production data;
and the average difference value acquisition unit is used for acquiring the average difference value of the adjacent stable annual output of the oil wells according to the average descending production days per month, the initial daily output before descending production of the oil wells and the stable daily output in the linear descending period.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method of predicting straight pull down period cumulative production of crude oil of any one of claims 1 to 6.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of predicting cumulative production of crude oil over a straight diminishing period of any one of claims 1 to 6.
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