CN113033857B - Method and device for predicting initial annual output of linear decreasing production well - Google Patents
Method and device for predicting initial annual output of linear decreasing production well Download PDFInfo
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Abstract
The invention provides a method and a device for predicting initial annual output of a linear degressive production well, wherein the method comprises the following steps: obtaining oil production data of a target linear degressive production well; obtaining the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate according to the oil production data; and obtaining the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production 1 st year, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate, objectively and accurately evaluating the initial annual output of the linear degressive production well, and eliminating the error of the initial annual output determined by generalized Arps degressive theory regression.
Description
Technical Field
The invention relates to the technical field of oilfield exploration and development, in particular to a method and a device for predicting initial annual output of a linear degressive production well.
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, when the productivity evaluation is carried out on the straight degressive production well, the initial annual yield of the oil well is required to be obtained, the productivity evaluation can be carried out, the future productivity of the oil well is predicted according to the known yield of the oil well, and the productivity prediction is a basic parameter for finally 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 the application of the decreasing exponent n in the hyperbolic decreasing type is extended to (-10, 10) or (— infinity, + ∞) and the formula of the stable annual production in the linear decreasing period is as follows:
in the formula, D yi Initial annual rate of decline, f; n is a decreasing index; q 0 Initial annual yield, m 3 /a；Q y To decrease the steady annual yield in year y of production, m 3 A; y is the number of years of the decreasing production calendar (y is more than or equal to 1), a.
When the decrement index n = -1, the linear decrement period stable annual yield formula is transformed into a linear decrement production oil well stable annual yield formula:
Q y ＝Q 0 (1-yD yi ) (2)
it is worth to be noted that the linear degressive production oil well initial annual output is calculated by applying the generalized Arps degressive theory, and the oil well initial annual output is determined by regression in the form of a formula (2).
The regression method is adopted to determine that the initial annual output of the oil well has errors through the arithmetic series analysis and comparison of the stable annual output of the straight degressive production oil well.
Disclosure of Invention
The present invention is directed to a method and apparatus for predicting initial annual production of a straight-line depletion producing well, an electronic device, and a computer readable storage medium that at least partially solve the problems associated with the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a method of predicting initial annual production of a straight-line diminishing production well is provided, comprising:
obtaining oil production data of a target linear degressive production well;
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 initial daily decrement rate according to the oil production data;
and acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate.
Further, the obtaining of the stable annual output of the decreasing production year 1, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well, and the initial daily decrement rate according to the oil production data includes:
obtaining the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the stable daily output of the straight decreasing period according to the oil production data;
and obtaining an initial daily decrement rate according to the initial daily yield before the oil well degressive production and the stable daily yield in the linear degressive period.
Further, the obtaining of the initial annual production of the target straight-line decreasing production well according to the stable annual production of the 1 st year of decreasing production, the average decreasing production days per month, the initial daily production before decreasing production of the oil well and the initial daily decreasing rate includes:
acquiring an average difference value of adjacent stable annual yields of the oil wells according to the average number of production days decreased every month, the initial daily yield before the oil wells are decreased and the initial daily decrement rate;
and acquiring the initial annual output of the target linear degressive production well according to the average difference and the stable annual output of the degressive production year 1.
Further, the average difference value of the adjacent stable annual output of the oil wells is obtained according to the average number of production days decreased per month, the initial daily output before the oil wells are decreased and the initial daily decrement rate, and the method is realized by adopting the following formula:
Q y-1 -Q y ＝(12m) 2 q 0 D di
wherein,Q y-1 -Q y average difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q 0 Indicating the initial daily production before the well is degressive, D di Indicating the initial daily decrement rate.
Further, the obtaining of the initial annual output of the target linear decreasing production well according to the average difference value and the stable annual output of the decreasing production year 1 is implemented by adopting the following formula:
Q 0 ＝Q 1 +(Q y-1 -Q y )
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Representing a steady annual production of decreasing production year 1.
Further, the initial annual output of the target straight-line decreasing production well is obtained according to the stable annual output of the decreasing production year 1, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate, and the method is realized by adopting the following formula:
Q 0 ＝Q 1 +(12m) 2 q 0 D di
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing producing well 1 Representing steady annual production at year 1 of declining production, m representing average days of declining production per month, q 0 Indicating the initial daily production before decreasing production of the well, D di Indicating the initial daily decrement rate.
Further, the initial annual output of the target straight-line degressive production well is obtained according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate, and is realized by adopting the following formula:
Q 0 ＝6mq 0 [2+D di (12m-1)]
wherein Q is 0 Representing the initial annual production of a target straight-line diminishing production well, m representing the average diminishing days per month, q 0 Indicating decreasing production from wellPre-initial daily yield, D di Indicating the initial daily decrement rate.
In a second aspect, there is provided an apparatus for predicting initial annual production of a straight-line tapered production well, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linear decreasing production well;
the parameter determining module 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 initial daily decrement rate according to the oil production data;
and the prediction module is used for acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate.
Further, the parameter determination module comprises:
the first parameter determining unit is used for acquiring the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the stable daily output of a straight decreasing period according to the oil production data;
and the second parameter determining unit is used for 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.
Further, the prediction module comprises:
the difference value prediction unit is used for acquiring the average difference value of the adjacent stable annual output of the oil well according to the average monthly degressive production days, the initial daily output before degressive production of the oil well and the initial daily decrement rate;
and a yield prediction unit for acquiring the initial annual yield of the target linear degressive production well according to the average difference value and the stable annual yield of the degressive production year 1.
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 initial annual production of a straight-line depletion production well 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, performs the steps of the above method of predicting the initial annual production of a straight-line depletion production well.
The invention provides a method and a device for predicting initial annual output of a linear degressive production well, 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; 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 initial daily decrement rate according to the oil production data; and obtaining the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output of the oil well before degressive production and the initial daily decrement rate, objectively and accurately evaluating the initial annual output of the linear degressive production well, and eliminating the error of the initial annual output determined by the generalized Arps degressive theory regression.
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 used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram between a server S1 and a client device B1 according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an architecture among a server S1, a client device B1 and a database server S2 according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method of predicting initial annual production of a straight-line diminishing production well in an embodiment of the present invention;
fig. 4 shows a specific step of step S200 in fig. 3;
fig. 5 shows the specific steps of step S300 in fig. 3;
FIG. 6 is a block diagram of an apparatus for predicting initial annual production from a straight-line declining production well in an embodiment of the invention;
fig. 7 shows a specific structure of the parameter determination module 20 in fig. 6;
FIG. 8 shows a specific structure of prediction module 30 in FIG. 6;
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 explicitly 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.
The generalized Arps decreasing theory is applied to calculate the linear decreasing production oil well initial annual output, and the oil well initial annual output is determined by regression in a form of a formula (2).
By carrying out arithmetic series analysis and comparison on the stable annual output of the linear degressive production oil well, the fact that the initial annual output of the oil well is calculated by applying the generalized Arps degressive theory to calculate the initial annual output of the linear degressive production oil well causes errors in the initial annual output of the oil well, further causes the accuracy of production performance prediction to be reduced, and influences the accuracy of a subsequently formulated oil field development scheme.
To at least partially solve the above technical problems in the prior art, embodiments of the present invention provide a method for predicting the initial annual output of a linear decreasing production well, which can objectively and accurately evaluate the initial annual output of the linear decreasing production well and eliminate an error in the initial annual output determined by regression using the generalized Arps decreasing theory.
In view of the above, the present application provides an apparatus for predicting the initial annual production of a straight-line decreasing production well, the apparatus may be a server S1, referring to fig. 1, the server S1 may be communicatively connected to at least one client device B1, the client device B1 may transmit the oil production data of a target straight-line decreasing production well to the server S1, and the server S1 may receive the oil production data of the target straight-line decreasing production well online. The server S1 can carry out online or offline pretreatment on the acquired oil production data of the target linear degressive production well, and according to the oil production data, the stable annual output of the degressive production in the 1 st year, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate are acquired; and acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate. The server S1 may then send the initial annual production of the target straight-line diminishing production well online to the client device B1. The client device B1 may receive the initial annual production of the target straight-line diminishing production well online.
In addition, referring to fig. 2, the server S1 may be further communicatively connected to at least one database server S2, and the database server S2 is configured to store oil production data of the target straight-line decreasing production well. According to a prediction instruction of client equipment B1, the database server S2 sends the oil production data of a target linear decreasing production well to the server S1 on line, the server S1 can receive the oil production data of the target linear decreasing production well on line, and the stable annual output of the 1 st year of decreasing production, the average decreasing production days per month, the initial daily output before decreasing production of an oil well and the initial daily decreasing rate are obtained according to the oil production data; and acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate.
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), an in-vehicle device, a smart wearable device, and the like. Wherein, intelligence wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..
In practical applications, the part of predicting the initial annual production of the straight-line decreasing production well may be performed on the server S1 side as described above, that is, in the architecture shown in fig. 1, or all operations may be performed in the client device B1, and the client device B1 may be directly connected to the database server S2 in a communication manner. 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 operations are performed in the client device B1, the client device B1 may further include a processor for performing a specific process of predicting the initial annual production rate of the straight-line tapered production well.
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 initial annual production of a straight-line diminishing production well in an embodiment of the present invention; as shown in fig. 3, the method for predicting the initial annual production of the straight-line decreasing production well may specifically include the following steps:
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: and obtaining the stable annual output of the 1 st year of the degressive production, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate according to the oil production data.
From the oil production data, the stable annual production for the 1 st year of declining production and the average days per month of declining production can be counted. 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 S300: and acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate.
Specifically, according to the parameters acquired in step S200, the initial annual production rate of the target straight-line decreasing production well may be acquired.
It is worth explaining that the initial annual output of the target linear decreasing production well is obtained and mainly used for predicting the oil deposit productivity, and then an oil field development scheme required in industry is formulated according to the predicted productivity to guide oil field development and production and achieve long-term and medium-term planning of an oil field.
In summary, the method for predicting the initial annual output of the linear decreasing production well provided by the embodiment of the invention establishes the prediction scheme of the initial annual output of the linear decreasing production well according to the initial daily output of the oil well, the stable daily output of the linear decreasing period and the average decreasing production days per month, is suitable for determining the initial annual output of the linear decreasing period in each stage of exploration and development of an oil field in a conventional oil reservoir, accurately and objectively evaluating the initial annual output of the linear decreasing production well, and eliminating the error of the initial annual output determined by the regression theory of generalized Arps decrease.
In an alternative embodiment, referring to fig. 4, this step S200 may include the following:
step S210: 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;
specifically, the steady annual production of the 1 st year of decreasing production and the average number of decreasing production days 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 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 is di Initial daily decrement rate, f; q. q.s 0 For wells with decreasing initial daily production, m 3 /d；q 1 To decrease the steady daily output on day 1 of production, m 3 /d。
By adopting the scheme, the initial daily decrement rate can be accurately calculated, and the prediction precision is further improved.
In an alternative embodiment, referring to fig. 5, this step S300 may include the following:
step S310: acquiring an average difference value of adjacent stable annual yields of the oil wells according to the average number of production days decreased every month, the initial daily yield before the oil wells are decreased and the initial daily decrement rate;
specifically, the following formula is adopted:
Q y-1 -Q y ＝(12m) 2 q 0 D di
wherein Q is y-1 -Q y Mean difference, m, representing adjacent stable annual production of a well 3 A, m represents the average decreasing production days per month (1. Ltoreq. M < 31), d, q 0 Indicating the initial daily production before decreasing production of the well, D di Indicating 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.
Step S320: and acquiring the initial annual output of the target linear degressive production well according to the average difference and the stable annual output of the degressive production year 1.
Specifically, the following formula is adopted for implementation:
Q 0 ＝Q 1 +(Q y-1 -Q y )
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Representing steady annual production at 1 year of decreasing production, m 3 /a。
By adopting the scheme, the calculation formula of the stable annual yield of the linear decreasing period is derived according to the attribute characteristics of the linear decreasing production oil well stable annual yield equal difference data series, the theoretical error is 0, and a foundation is provided for objectively evaluating the oil deposit capacity by establishing an initial annual yield evaluation equation of the oil well linear decreasing period.
In an alternative embodiment, the step S300 can be directly implemented by using the following formula:
Q 0 ＝Q 1 +(12m) 2 q 0 D di
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Represents the steady annual production for the 1 st year of declining production, m represents the average number of declining days per month, q 0 Indicating the initial daily production before the well is degressive, D di Indicating the initial daily decrement rate.
In another alternative embodiment, the step S300 can also be implemented by using the following equation:
Q 0 ＝6mq 0 [2+D di (12m-1)]
wherein Q is 0 Representing the initial annual production of a target straight-line declining producer, m representing the average number of declining days per month, q 0 Indicating the initial daily production before the well is degressive, D di Indicating the initial daily decrement rate.
By adopting the scheme, the initial annual output of the target linear degressive production well can be accurately predicted, the accurate prediction of the oil deposit productivity is facilitated, the obtained oil field development scheme is accurate, the oil field development production efficiency is improved, and the long-term planning in the oil field is facilitated.
The method for predicting the initial annual production of the straight-line decreasing production well provided by the invention is illustrated as follows:
the average linear degressive production of the H3 well is decreased for 25 days every month, the stable daily yield and the stable annual yield of the oil well are shown in an H3 well degressive production data table (table 1), and the initial annual yield of the H3 well is calculated.
Table 1: h3 well straight line degressive production data table
Firstly, determining the initial daily output of an oil well in a steady production period:
q 0 ＝50m 3 /d
secondly, determining the average decreased production days per month of the oil well in a decreasing period:
m＝25d
step three, obtaining the initial daily decrement rate of the H3 well:
and step four, acquiring the stable annual output of the 1 st year of the degressive production of the H3 well:
Q 1 ＝12742.5m 3 /a
and fifthly, calculating the initial annual output of the H3 well:
Q 0 ＝Q 1 +(12m) 2 q 0 D di ＝17242.5m 3 /a
or, Q 0 ＝6mq 0 [2+D di (12m-1)]＝17242.5m 3 /a
Therefore, the method for predicting the initial annual output of the linear decreasing production well provided by the embodiment of the invention establishes the prediction scheme of the initial annual output of the linear decreasing production well according to the initial daily output of the oil well, the stable daily output of the linear decreasing period and the average decreasing production days per month, is suitable for determining the initial annual output of the linear decreasing period in each stage of exploration and development of an oil field by a conventional oil reservoir, accurately and objectively evaluating the initial annual output of the linear decreasing production well, and eliminating the error of the initial annual output determined by generalized Arps decreasing theory regression.
Based on the same inventive concept, the embodiment of the present application further provides a device for predicting the initial annual production rate of the linearly decreasing production well, which can be used for implementing the method described in the above embodiment, as described in the following embodiment. Because the principle of the device for predicting the initial annual output of the linear degressive production well is similar to that of the method, the implementation of the device for predicting the initial annual output of the linear degressive production well can refer to the implementation of the method, and repeated parts are not described again. 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. 6 is a block diagram of an apparatus for predicting initial annual production from a straight-line depletion producing well in an embodiment of the present invention; as shown in fig. 6, the apparatus for predicting the initial annual production of the linearly declining production well specifically includes: an oil production data acquisition module 10, a parameter determination module 20, and a prediction module 30.
The oil production data acquisition module 10 acquires oil production data of a target linear decreasing production well;
the parameter determination module 20 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 initial daily decrement rate according to the oil production data;
the prediction module 30 obtains the initial annual output of the target straight-line degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate.
In summary, the device for predicting the initial annual output of the linear decreasing production well provided by the embodiment of the invention establishes the prediction scheme of the initial annual output of the linear decreasing production well according to the initial daily output of the oil well, the stable daily output of the linear decreasing period and the average decreasing production days per month, and is suitable for determining the initial annual output of the linear decreasing period in each stage of exploration and development of an oil field in a conventional oil reservoir, accurately and objectively evaluating the initial annual output of the linear decreasing production well, and eliminating the error of the initial annual output determined by the generalized Arps decreasing theory regression.
In an alternative embodiment, referring to fig. 7, the parameter determination module 20 includes: a first parameter determination unit 21 and a second parameter determination unit 22.
The first parameter determining unit 21 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 second parameter determining unit 22 is used for acquiring an initial daily decrement rate according to the initial daily yield before the oil well decremental production and the stable daily yield in the linear decremental period.
In an alternative embodiment, referring to fig. 8, the prediction module 30 comprises: difference prediction unit 31 and yield prediction unit 31
The difference value prediction unit 31 is used for acquiring the average difference value of the adjacent stable annual output of the oil wells according to the average monthly decrement production days, the initial daily output before the oil wells decrement production and the initial daily decrement rate;
and a yield prediction unit 32 for obtaining the initial annual yield of the target straight-line degressive production well according to the average difference value and the stable annual yield of the degressive production 1 year.
The apparatuses, modules or units illustrated in the above embodiments may be specifically 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;
obtaining the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate according to the oil production data;
and acquiring the initial annual output of the target straight-line decreasing production well according to the stable annual output of the 1 st year of decreasing production, the average decreasing production days per month, the initial daily output before decreasing production of the oil well and the initial daily decreasing rate.
From the above description, the electronic device provided by the embodiment of the invention can be used for predicting the initial annual output of the linear degressive production well, objectively and accurately evaluating the initial annual output of the linear degressive production well, and eliminating the error of the initial annual output determined by the generalized Arps degressive theory regression.
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. A 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 the computer program read out therefrom is mounted as necessary in the storage section 608.
In particular, the processes described above with reference to the flowcharts may be implemented as a computer software program according to an embodiment of the present invention. For example, an embodiment of the invention includes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
obtaining oil production data of a target linear decreasing production well;
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 initial daily decrement rate according to the oil production data;
and acquiring the initial annual output of the target straight-line decreasing production well according to the stable annual output of the 1 st year of decreasing production, the average decreasing production days per month, the initial daily output before decreasing production of the oil well and the initial daily decreasing rate.
As can be seen from the foregoing description, the computer-readable storage medium provided in the embodiments of the present invention can be used to predict the initial annual output of a straight-line tapered production well, objectively and accurately evaluate the initial annual output of a straight-line tapered production well, and eliminate an error in the initial annual output determined by generalized Arps regression theory.
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 permanent and non-permanent, removable and non-removable media, may implement the 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 Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising 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, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.
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 or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (6)
1. A method of predicting initial annual production of a straight-line depletion production well, comprising:
obtaining oil production data of a target linear degressive production well;
obtaining the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate according to the oil production data;
acquiring the initial annual output of a target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate;
the method 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 initial daily decrement rate according to the oil production data comprises the following steps: 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; acquiring an initial daily decrement rate according to the initial daily yield before the oil well decremental production and the stable daily yield in the linear decremental period;
wherein the obtaining of the initial annual output of the target straight-line tapered production well according to the stable annual output of the tapered production year 1, the average tapered production days per month, the initial daily output before the tapered production of the oil well and the initial daily decrement rate comprises: acquiring an average difference value of adjacent stable annual yields of the oil wells according to the average number of production days decreased every month, the initial daily yield before the oil wells are decreased and the initial daily decrement rate; acquiring the initial annual output of the target linear degressive production well according to the average difference and the stable annual output of the degressive production year 1;
the average difference value of the adjacent stable annual output of the oil well is obtained according to the average reduction production days per month, the initial daily output before the oil well is reduced and the initial daily reduction rate, and the method is realized by adopting the following formula:
Q y-1 -Q y ＝(12m) 2 q 0 D di
wherein Q y-1 -Q y Average difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q 0 Indicating the initial daily production before the well is degressive, D di Represents the initial daily decrement rate;
the initial annual output of the target linear degressive production well is obtained according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate, and is realized by adopting the following formula:
Q 0 ＝Q 1 +(12m) 2 q 0 D di
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Representing steady annual production at year 1 of declining production, m representing average days of declining production per month, q 0 Indicating the initial daily production before decreasing production of the well, D di Indicating the initial daily decrement rate.
2. The method for predicting initial annual production of a straight-line decreasing production well according to claim 1, wherein the obtaining of the initial annual production of the target straight-line decreasing production well according to the average difference value and the stable annual production of the decreasing production year 1 is realized by adopting the following formula:
Q 0 ＝Q 1 +(Q y-1 -Q y )
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Representing a steady annual yield at year 1 of declining production.
3. The method for predicting the initial annual production of a linear decreasing production well according to claim 1, wherein the obtaining of the initial annual production of the target linear decreasing production well according to the stable annual production of the 1 st year of decreasing production, the average decreasing production days per month, the initial daily production before decreasing production of the oil well and the initial daily decreasing rate is realized by adopting another formula:
Q 0 ＝6mq 0 [2+D di (12m-1)]
wherein Q is 0 Representing the initial annual production of a target straight-line diminishing production well, m representing the average diminishing days per month, q 0 Indicating the initial daily production before decreasing production of the well, D di Indicating the initial daily decrement rate.
4. An apparatus for predicting initial annual production from a straight-line tapered production well, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linear decreasing production well;
the parameter determining module is used for acquiring the stable annual output of the 1 st year of the decreasing production, the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate according to the oil production data;
the prediction module is used for acquiring the initial annual output of the target linear degressive production well according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate;
wherein the parameter determination module comprises: the first parameter determining 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; the second parameter determining unit is used for 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;
wherein the prediction module comprises: the difference value prediction unit is used for acquiring the average difference value of the adjacent stable annual output of the oil well according to the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decreasing rate; the yield prediction unit is used for acquiring the initial annual yield of the target linear degressive production well according to the average difference value and the stable annual yield of the degressive production year 1;
the average difference value of the adjacent stable annual output of the oil well is obtained according to the average decreasing production days per month, the initial daily output before the decreasing production of the oil well and the initial daily decrement rate, and the method is realized by adopting the following formula:
Q y-1 -Q y ＝(12m) 2 q 0 D di
wherein Q is y-1 -Q y Average difference representing adjacent steady annual production of wells, m represents average days of diminishing production per month, q 0 Indicating the initial daily production before the well is degressive, D di Representing an initial daily decrement rate;
the initial annual output of the target linear degressive production well is obtained according to the stable annual output of the degressive production year 1, the average degressive production days per month, the initial daily output before the degressive production of the oil well and the initial daily decrement rate, and is realized by adopting the following formula:
Q 0 ＝Q 1 +(12m) 2 q 0 D di
wherein Q is 0 Representing the initial annual production, Q, of a target straight-line diminishing production well 1 Represents the steady annual production for the 1 st year of declining production, m represents the average number of declining days per month, q 0 Indicating the initial daily production before the well is degressive, D di Indicating the initial daily decrement rate.
5. 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 initial annual production of a straight diminishing production well of any one of claims 1 to 3.
6. A computer-readable storage medium, having stored thereon a computer program, wherein the computer program, when executed by a processor, performs the steps of the method of predicting initial annual production of a straight-line diminishing production well of any one of claims 1 to 3.
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