CN113033858B - Method and device for predicting recoverable reserves of crude oil technology - Google Patents
Method and device for predicting recoverable reserves of crude oil technology Download PDFInfo
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Abstract
The invention provides a method and a device for predicting the recoverable reserves of crude oil technology, wherein the method comprises the following steps: obtaining oil production data of a target linear decreasing production well; acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data; and obtaining the crude oil technology recoverable reserves according to the decreasing production time of the crude oil before decreasing production, the average production time of decreasing production day of each month, the initial annual rate of decreasing oil well and the initial annual rate of increasing oil well, wherein the crude oil technology recoverable reserves are obtained according to the decreasing production time of decreasing production of the crude oil before decreasing production, the average production time of decreasing production day of each month, the initial annual rate of decreasing oil well and the initial annual rate of increasing oil well, and the crude oil technology recoverable reserves are predicted with improved accuracy.
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 recoverable reserves of crude oil technology.
Background
The technical recoverable reserves refer to the quantity of the finally recoverable oil gas which is calculated by a manager or estimated by analogy under the given technical conditions, and are important parameters for formulating a high-efficiency reasonable oil field development scheme.
At present, three oil well yield decrementing types are exponential decrementing, hyperbolic decrementing and harmonic decrementing, and the application range of the decrementing index is defined as 0-1; in practical applications, the range of application of the decreasing exponent n in the hyperbolic decreasing type is extended to (-10, 10) or (- ≡, in +++). And is referred to as the "generalized Arps decreasing theory":
Wherein D yi represents the initial annual percentage of decline, f; n represents a decreasing exponent; n y represents the cumulative yield of crude oil (excluding q 0 and prior yields) at the time of decreasing production at the y-th year, t; q 0 represents the initial annual yield, t/a; q y represents the stable annual yield, t/a, of decreasing production year y; y represents a decreasing production calendar year number (y.gtoreq.1), a.
When the decrementing index n= -1, the decrementing period steady year yield equation (1) of the generalized Arps decrementing theory is deformed into a linear decrementing production well steady year yield equation:
Qy＝Q0(1-yDyi)
When the decreasing index n= -1, the decreasing period crude oil accumulation yield formula (2) of the generalized Arps decreasing theory can be transformed into a linear decreasing production well crude oil technology recoverable reserve calculation formula:
Wherein, the crude oil technology of N' T -Arps linear decreasing period can collect 10 4 t of reserves.
When the generalized Arps decreasing theory is applied to calculate the recoverable reserves of the crude oil technology in the linear decreasing period, the initial annual output of the oil well and the recoverable reserves of the crude oil technology in the linear decreasing period can be calculated after the initial annual decreasing rate are determined by means of form regression of a formula (3).
Through the analysis and comparison of the steady annual yield arithmetic series, obvious errors exist in the oil well crude oil calculation technology by adopting the formula (4).
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a method and apparatus for predicting crude oil technical recoverable reserves, 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 above purpose, the present invention adopts the following technical scheme:
in a first aspect, a method of predicting crude oil technical recoverable reserves is provided, comprising:
obtaining oil production data of a target linear decreasing production well;
acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well.
Further, the step of obtaining the accumulated production of the crude oil before the production, the average production days per month, the initial annual decline rate of the oil well and the initial annual production of the oil well according to the oil production data comprises the following steps:
Acquiring the accumulated yield of crude oil before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of an oil well, the steady daily yield in a linear decreasing period and the steady annual yield in the 1 st year of decreasing production according to the oil production data;
acquiring an initial daily yield according to the initial daily yield before the oil well is reduced and the linear reduction period stable daily yield;
Obtaining the initial annual output of the oil well according to the stable annual output of the decreasing production 1 year, the average decreasing production days per month, the initial daily output before decreasing production of the oil well and the initial daily decreasing rate;
And obtaining the initial annual decline rate according to the average day of production decline per month, the initial daily decline rate, the initial daily yield before oil well decline production and the initial annual yield of the oil well.
Further, the obtaining the initial annual production of the oil well according to the steady annual production of the 1 st year of decreasing production, the average decreasing production day per month, the initial daily production of the oil well before decreasing production, and the initial daily decrease rate comprises:
obtaining an average difference value of the adjacent stable annual yields of the oil well according to the average decreasing production days per month, the initial daily yield before decreasing production of the oil well and the initial daily decreasing rate;
And obtaining the initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the 1 st year of the decreasing production.
Further, the average difference value of the oil well adjacent stable annual output is obtained according to the average production days per month, the initial daily output before the oil well is produced in a decreasing mode and the initial daily decreasing rate, and the average difference value is achieved by the following formula:
Qy-1-Qy＝(12m)2q0Ddi
where Q y-1-Qy represents the average difference in the production of the adjacent stable years of the well, m represents the average number of decreasing production days per month, Q 0 represents the initial daily production of the well before decreasing production, and D di represents the initial daily rate of decrease.
Further, the obtaining the initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the decreasing production 1 st year is realized by adopting the following formula:
Q0＝Q1+(Qy-1-Qy)
where Q 0 represents the initial annual production of the well, Q 1 represents the steady annual production of decreasing production for year 1, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
Further, the initial annual reduction rate is obtained according to the average production days per month, the initial daily reduction rate, the initial daily production before the oil well is reduced, and the initial annual production of the oil well, and is realized by adopting the following formula:
Where D yi represents the initial annual rate of decline, Q 0 represents the initial annual production of the well, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
Further, the obtaining crude oil technical recoverable reserves according to the decreasing pre-production crude oil cumulative production, the average decreasing production days per month, the initial annual rate of decline of the oil well, and the initial annual production of the oil well comprises:
Where N RT represents crude oil technology recoverable reserves, 10 4t,No represents decreasing crude oil cumulative yield before production, 10 4 t, m represents average decreasing production days per month, and D yi represents initial year progressive rate.
In a second aspect, there is provided an apparatus for predicting crude oil technical recoverable reserves, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linearly decreasing production well;
The parameter acquisition module acquires the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
and the prediction module is used for obtaining the technical recoverable reserves of the crude oil according to the accumulated crude oil yield before the decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well.
Further, the parameter obtaining module includes:
The parameter acquisition unit acquires the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of the oil well, the stable daily yield in the linear decreasing period and the stable annual yield in the 1 st year of decreasing production according to the oil production data;
An initial daily reduction rate obtaining unit for obtaining an initial daily reduction rate according to the initial daily yield before the oil well is reduced and the linear reduction period stable daily yield;
An initial annual output obtaining unit that obtains the initial annual output of the oil well based on the steady annual output of the reduced production 1 st year, the average reduced production day per month, the initial daily output of the oil well before the reduced production, and the initial daily reduction rate;
And an initial year decreasing rate acquiring unit configured to acquire an initial year decreasing rate based on the average day of production decreasing per month, the initial day decreasing rate, the initial day production before oil well decreasing production, and the initial year production of the oil well.
Further, the initial annual output acquisition unit includes:
An average difference value obtaining subunit, configured to obtain an average difference value of the production of the adjacent stable years of the oil well according to the average decreasing production days per month, the initial daily production before decreasing production of the oil well, and the initial daily decreasing rate;
And an initial annual output obtaining subunit for obtaining the initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the 1 st year of the decreasing production.
In a third aspect, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the steps of the method of predicting crude oil technical recoverable reserves described above.
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 method of predicting crude oil technical recoverable reserves described above.
The invention provides a method and a device for predicting the recoverable reserves of crude oil technology, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: obtaining oil production data of a target linear decreasing production well; acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data; and obtaining the crude oil technology recoverable reserves according to the decreasing production time of the crude oil before decreasing production, the average production time of decreasing production day of each month, the initial annual rate of decreasing oil well and the initial annual rate of increasing oil well, wherein the crude oil technology recoverable reserves are obtained according to the decreasing production time of decreasing production of the crude oil before decreasing production, the average production time of decreasing production day of each month, the initial annual rate of decreasing oil well and the initial annual rate of increasing oil well, and the crude oil technology recoverable reserves are predicted with improved accuracy.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. 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 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 flow chart of a method of predicting crude oil technical recoverable reserves in an embodiment of the present invention;
fig. 4 shows a specific step of step S200 in fig. 3;
fig. 5 shows a specific step of step S230 in fig. 4;
fig. 6 shows HN24 well production curves in an embodiment of the present invention.
FIG. 7 is a block diagram of an apparatus for predicting crude oil technical recoverable reserves in an embodiment of the present invention;
FIG. 8 shows a specific structure of the parameter acquisition module of FIG. 7;
FIG. 9 shows a specific structure of the initial annual output acquiring unit in FIG. 8;
Fig. 10 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It will be appreciated by those skilled in the art that 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 is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present application and in the foregoing figures, 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 or inherent to such process, method, article, or apparatus.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Through the analysis and comparison of the steady annual yield arithmetic series, obvious errors exist in the oil well crude oil calculation technology by adopting the prior art.
To at least partially solve the above technical problems in the prior art, an embodiment of the present invention provides a method for predicting a recoverable crude oil technical reserve, which improves the accuracy of predicting the recoverable crude oil technical reserve by obtaining the recoverable crude oil technical reserve according to the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well, and the initial annual yield of the oil well.
In view of this, the present application provides an apparatus for predicting the recoverable reserves of crude oil technology, which 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 send the oil production data of the target linearly decreasing production well to the server S1, and the server S1 may receive the oil production data of the target linearly decreasing production well online. The server S1 can pretreat the obtained oil production data of the target linear decreasing production well on line or off line, and obtain the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data; and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well. The server S1 may then send crude technology recoverable reserves online to the client device B1. The client device B1 may receive the crude technology recoverable reserves online.
In addition, referring to fig. 2, the server S1 may be further communicatively connected to at least one database server S2, where the database server S2 is configured to store the oil production data of the target linearly 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 linearly decreasing production well to the server S1 online, and the server S1 can receive the oil production data of the target linearly decreasing production well online, and obtain the accumulated yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual rate of the oil well and the initial annual yield of the oil well according to the oil production data; and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield 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, intelligent wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..
In practical applications, the portion of predicting the crude oil technical recoverable reserves may be performed on the server S1 side as described above, i.e. 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, and restrictions of the use scenario of the user. The application is not limited in this regard. If all operations are performed in the client device B1, the client device B1 may further include a processor for performing specific processing for predicting the crude oil technical recoverable reserves.
Any suitable network protocol may be used for communication between the server and the client device, including those not yet developed on the filing date of the present application. The network protocols may include, for example, TCP/IP protocol, UDP/IP protocol, HTTP protocol, HTTPS protocol, etc. Of course, the network protocol may also include, for example, RPC protocol (Remote Procedure Call Protocol ), REST protocol (Representational STATE TRANSFER) or the like used above the above-described protocol.
FIG. 3 is a flow chart of a method of predicting crude oil technical recoverable reserves in an embodiment of the present invention. As shown in fig. 3, the method of predicting crude technology recoverable reserves may include the following:
Step S100: obtaining oil production data of a target linear decreasing production well;
The oil well adopts oil field development equipment and corresponding production modes to extract oil in a target oil reservoir, and oil production data of the oil well are obtained through corresponding storage and transportation equipment in the process of oil extraction.
Step S200: acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
specifically, the cumulative yield of crude oil before decreasing production and the average decreasing production days per month can be counted according to the oil production data, and the initial annual decreasing rate of the oil well and the initial annual yield of the oil well can be calculated according to the oil production data.
Step S300: and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well.
It is worth to say that, through predicting the crude oil technology recoverable reserves, can realize the future productivity prediction of the linearly decreasing production oil well, is the requisite parameter of formulating the development scheme of the oil field, and then is used for formulating the development scheme of the oil field required in industry, is used for guiding the development and production of the oil field, realizes the long-term planning in the oil field.
In summary, the method for predicting the recoverable reserves of the crude oil technology according to the embodiments of the present invention improves the accuracy of predicting the recoverable reserves of the crude oil technology by obtaining the recoverable reserves of the crude oil technology according to the accumulated yields of the crude oil before the decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well, and the initial annual yields of the oil well.
The method for predicting the recoverable reserves of the crude oil technology provided by the embodiment of the invention can objectively evaluate the recoverable reserves of the crude oil technology of the linear decreasing production oil well, eliminates obvious deviation existing when the recoverable reserves of the crude oil technology of the linear decreasing period are calculated by the generalized Arps decreasing theory, and is particularly suitable for determining the recoverable reserves of the crude oil technology of the linear decreasing production oil well in various stages of oil field exploration and development of new blocks in old areas and conventionally developed oil reservoirs.
It is worth to say that the change of the steady annual output in the linear decreasing period of the oil well 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 steady annual output is, and the slower the decreasing of the steady annual output is; the larger the initial annual decline rate is, the larger the slope of the linear decline production of the stable annual yield is, and the faster the stable annual yield is decreased.
In an alternative embodiment, referring to fig. 4, this step S200 may include the following:
Step S210: acquiring the accumulated yield of crude oil before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of an oil well, the steady daily yield in a linear decreasing period and the steady annual yield in the 1 st year of decreasing production according to the oil production data;
Specifically, decreasing the cumulative production of crude oil before production, decreasing the average number of days of production per month, and decreasing the steady annual production of year 1 can be counted based on 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 output of the oil well before decreasing production is found according to the decreasing production starting time of the oil well.
Step S220: acquiring an initial daily yield according to the initial daily yield before the oil well is reduced and the linear reduction period stable daily yield;
specifically, the following formula can be adopted:
Wherein D di is the initial daily reduction rate, f; q 0 is the initial daily yield before decreasing production of the well, m 3/d;q1 is the steady daily yield on day 1 of decreasing production, m 3/d.
By adopting the scheme, the initial daily reduction rate can be accurately calculated, and the prediction precision is further improved.
Step S230: obtaining the initial annual output of the oil well according to the stable annual output of the decreasing production 1 year, the average decreasing production days per month, the initial daily output before decreasing production of the oil well and the initial daily decreasing rate;
step S240: and obtaining the initial annual decline rate according to the average day of production decline per month, the initial daily decline rate, the initial daily yield before oil well decline production and the initial annual yield of the oil well.
Specifically, the following formula is adopted:
Where D yi represents the initial annual rate of decline, Q 0 represents the initial annual production of the well, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
By adopting the technical scheme, the accurate initial annual decline rate can be obtained, and the prediction precision is further improved.
In an alternative embodiment, referring to fig. 5, this step S230 may include the following:
step S231: obtaining an average difference value of the adjacent stable annual yields of the oil well according to the average decreasing production days per month, the initial daily yield before decreasing production of the oil well and the initial daily decreasing rate;
specifically, the following formula is adopted:
Qy-1-Qy＝(12m)2q0Ddi
where Q y-1-Qy represents the average difference in the production of the adjacent stable years of the well, m represents the average number of decreasing production days per month, Q 0 represents the initial daily production of the well before decreasing production, and D di represents the initial daily rate of decrease.
It is worth noting that the difference between any adjacent stable annual production of the linearly decreasing production well is constant.
Step S232: and obtaining the initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the 1 st year of the decreasing production.
Specifically, the following formula is adopted:
Q0＝Q1+(Qy-1-Qy)
where Q 0 represents the initial annual production of the well, Q 1 represents the steady annual production of decreasing production for year 1, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
By adopting the technical scheme, a crude oil technical recoverable reserve formula in the linear decrementing period is derived according to the attribute characteristics of the steady annual yield equal difference data series in the linear decrementing period of the oil well, and the error of a calculation result is reduced.
In an alternative embodiment, this step S300 may be implemented using the following formula:
Where N RT represents crude oil technology recoverable reserves, 10 4t,No represents decreasing crude oil cumulative yield before production, 10 4 t, m represents average decreasing production days per month, and D yi represents initial year progressive rate.
By adopting the technical scheme, the recoverable reserves of the crude oil technology can be accurately predicted.
The method for predicting the technical recoverable reserves of crude oil provided by the invention is illustrated by the following example:
The HN24 well production begins to decrease, the initial stable daily yield of 58.0t/d before the linear decrease production, the cumulative crude oil of 0t before the decrease production are decreased, the average daily yield of 15.5937 days per month decrease production, the stable daily yield, the stable annual yield and the cumulative crude oil yield of the oil well in the decreasing period are shown in the HN24 well decreasing production data table 1 and fig. 6.
TABLE 1HN24 well linear decreasing production data table
From table 1 and known conditions, it can be determined that the initial stable daily production of HN24 well, q 0, and the decreasing pre-production cumulative crude oil production, N o:
q0＝58.0t/d
No＝0×104t
Determining the average production days per month of oil well decrease m in the linear decrease period:
m＝15.593669d
The initial daily reduction rate D di for HN24 well was calculated:
determining the average value of the differences between the adjacent stable annual yields in the decreasing period, and ensuring that the decreasing of the oil well yields accords with the linear decreasing characteristic; thereafter, the initial annual production rate Q 0 and initial annual decline rate D yi of HN24 wells were calculated:
Qy-1-Qy＝512.5667t/a
Q0＝Q1+512.5667＝11292.5667t/a
Calculating HN24 well crude oil technology recoverable reserves N RT:
HN24 well ascertains crude oil geological reserves 51×10 4 t, the well calculates crude oil technical recoverable reserves 12.20×10 4 t by static method; the 11.88× 4 t of crude oil can be calculated by adopting the progressive method (the invention) and the calculated value of the static method are consistent.
Based on the same inventive concept, the embodiment of the present application also provides a device for predicting the technical recoverable reserves of crude oil, which can be used to implement the method described in the above embodiment, as described in the following embodiment. Since the principle of solving the problem of the device for predicting the recoverable reserves of the crude oil technology is similar to that of the method, the implementation of the device for predicting the recoverable reserves of the crude oil technology can be referred to the implementation of the method, and the repetition is omitted. As used below, the term "unit" or "module" may be a combination of software and/or hardware that implements the intended function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
FIG. 7 is a block diagram of an apparatus for predicting recoverable reserves using crude oil technology in an embodiment of the present invention. As shown in fig. 7, the device for predicting the recoverable reserves of the crude oil technology specifically comprises: the system comprises an oil production data acquisition module 10, a parameter acquisition module 20 and a prediction module 30.
The oil production data acquisition module 10 acquires oil production data of a target linearly decreasing production well;
The parameter acquisition module 20 acquires the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
Prediction module 30 obtains crude oil technical reserves based on the decreasing pre-production cumulative yield, the average decreasing production days per month, the initial annual rate of decline of the well, and the initial annual yield of the well.
In summary, the device for predicting the recoverable reserves of the crude oil technology provided by the embodiment of the invention improves the prediction accuracy of the recoverable reserves of the crude oil technology by obtaining the recoverable reserves of the crude oil technology according to the accumulated yields of the crude oil before the decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yields of the oil well.
In an alternative embodiment, referring to fig. 8, the parameter acquisition module 20 includes: a parameter acquisition unit 21, an initial daily reduction rate acquisition unit 22, an initial annual yield acquisition unit 23, and an initial annual reduction rate acquisition unit 24.
The parameter acquisition unit 21 acquires the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of the oil well, the steady daily yield in the straight decreasing period, and the steady annual yield in the 1 st year of decreasing production, based on the oil production data;
An initial daily reduction rate acquisition unit 22 acquires an initial daily reduction rate from the initial daily yield before the oil well is reduced in production and the steady daily yield in the straight line reduction period;
An initial annual output obtaining unit 23 obtains the initial annual output of the oil well from the steady 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;
The initial annual percentage decrease acquisition unit 24 acquires an initial annual percentage decrease based on the average number of days of production decrease per month, the initial daily percentage decrease, the initial daily production before production decrease of the oil well, and the initial annual production decrease of the oil well.
In an alternative embodiment, referring to fig. 9, the initial annual output acquiring unit 23 may include: average difference value acquisition subunit 23a and initial annual output acquisition subunit 23b.
The average difference value obtaining subunit 23a obtains an average difference value of the adjacent stable annual yields of the oil well according to the average decreasing production days per month, the initial daily yield before decreasing production of the oil well and the initial daily decreasing rate;
The initial annual production obtaining subunit 23b obtains the initial annual production of the oil well from the average difference of the adjacent stable annual production of the oil well and the stable annual production of the 1 st year of the decreasing production.
The apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. 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 comprises in particular a memory, a processor and a computer program stored on the memory and executable on the processor, said processor implementing the following steps when said program is executed:
obtaining oil production data of a target linear decreasing production well;
acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well.
As can be seen from the above description, the electronic device provided by the embodiment of the invention can be used for predicting the technical recoverable reserves of crude oil, and the accuracy of predicting the technical recoverable reserves of crude oil is improved by obtaining the technical recoverable reserves of crude oil according to the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well.
Referring now to fig. 10, a schematic diagram of an electronic device suitable for use in implementing embodiments of the present application is shown.
As shown in fig. 10, the electronic apparatus includes a Central Processing Unit (CPU) 601, which 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 required for system operation are also stored. The CPU601, ROM602, and RAM603 are connected to each other through 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, mouse, etc.; an output portion 607 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; 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 drive 610 is also connected to the I/O interface 605 as needed. Removable media 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on drive 610 as needed, so that a computer program read therefrom is mounted as needed as storage section 608.
In particular, according to embodiments of the present invention, the processes described above with reference to flowcharts may be implemented as computer software programs. 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;
acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
and obtaining crude oil technical recoverable reserves according to the accumulated crude oil yield before production decrease, the average production day decrease per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well.
As can be seen from the above description, the computer-readable storage medium provided by the embodiments of the present invention can be used to predict the technical recoverable reserves of crude oil, and the accuracy of predicting the technical recoverable reserves of crude oil can be improved by obtaining the technical recoverable reserves of crude oil according to the accumulated production of crude oil before the decreasing production, the decreasing production days per month, the initial annual rate of decrease of the oil well and the initial annual production of the oil well.
In such an embodiment, the computer program may be downloaded and installed from a network through the communication portion 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 storage media for a computer 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, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in the same piece or pieces of 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be appreciated by those skilled in the art that 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.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (7)
1. A method of predicting crude oil technical recoverable reserves, comprising:
obtaining oil production data of a target linear decreasing production well;
acquiring the cumulative yield of crude oil before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
obtaining crude oil technical recoverable reserves according to the decreasing production of crude oil before production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual production of the oil well;
The step of obtaining the accumulated yield of the crude oil before the production, the average production days per month, the initial annual decline rate of the oil well and the initial annual yield of the oil well according to the oil production data comprises the following steps:
Acquiring the accumulated yield of crude oil before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of an oil well, the steady daily yield in a linear decreasing period and the steady annual yield in the 1 st year of decreasing production according to the oil production data;
acquiring an initial daily yield according to the initial daily yield before the oil well is reduced and the linear reduction period stable daily yield;
Obtaining the initial annual output of the oil well according to the stable annual output of the decreasing production 1 year, the average decreasing production days per month, the initial daily output before decreasing production of the oil well and the initial daily decreasing rate;
Obtaining an initial annual percentage of decline according to the average day of decline per month, the initial daily percentage of decline, the initial daily yield before decline of the oil well production and the initial annual yield of the oil well;
Said obtaining said initial annual production of said well from said steady annual production of decreasing production year 1, said average decreasing production day per month, said initial daily production prior to decreasing production of said well, and said initial daily rate of decreasing production, comprising:
obtaining an average difference value of the adjacent stable annual yields of the oil well according to the average decreasing production days per month, the initial daily yield before decreasing production of the oil well and the initial daily decreasing rate;
Acquiring initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the decreasing production 1 st year;
the obtaining crude oil technical recoverable reserves according to the decreasing pre-production crude oil cumulative production, the average decreasing production days per month, the initial annual rate of decline of the oil well and the initial annual production of the oil well comprises:
Where N RT represents crude oil technology recoverable reserves, 10 4t,No represents decreasing crude oil cumulative production before production, 10 4 t, m represents average decreasing production days per month, D yi represents initial annual rate of decrease, and Q 0 represents initial annual production of the well.
2. The method for predicting crude oil technical recoverable reserves as recited in claim 1, wherein said obtaining an average difference between the production of adjacent stable years of the well based on said average production days per month, the initial daily production before the production of the well, and the initial daily production rate is accomplished using the following equation:
Qy-1-Qy＝(12m)2q0Ddi
where Q y-1-Qy represents the average difference in the production of the adjacent stable years of the well, m represents the average number of decreasing production days per month, Q 0 represents the initial daily production of the well before decreasing production, and D di represents the initial daily rate of decrease.
3. The method of predicting crude oil technology recoverable reserves as in claim 1, wherein said deriving the initial annual oil well production from the average difference between the adjacent annual oil well yields and the decreasing annual oil production for year 1 is accomplished using the following equation:
Q0＝Q1+(Qy-1-Qy)
where Q 0 represents the initial annual production of the well, Q 1 represents the steady annual production of decreasing production for year 1, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
4. The method of predicting crude oil technical recoverable reserves as recited in claim 3, wherein said obtaining an initial annual percentage reduction from said average number of days of production per month, said initial daily percentage reduction, said initial daily percentage prior to production of said well, and said initial annual percentage of production of said well is accomplished using the formula:
Where D yi represents the initial annual rate of decline, Q 0 represents the initial annual production of the well, and Q y-1-Qy represents the average difference between the adjacent steady annual production of the well.
5. An apparatus for predicting crude oil technology recoverable reserves, comprising:
the oil production data acquisition module is used for acquiring oil production data of the target linearly decreasing production well;
The parameter acquisition module acquires the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well according to the oil production data;
The prediction module is used for obtaining the crude oil technical recoverable reserves according to the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial annual decreasing rate of the oil well and the initial annual yield of the oil well by the following steps:
Wherein, N RT represents the crude oil technology recoverable reserves, 10 4t,No represents the accumulated crude oil yield before decreasing production, 10 4 t, m represents the average decreasing production days per month, D yi represents the initial annual decreasing rate, and Q 0 represents the initial annual oil well yield;
the parameter acquisition module comprises:
The parameter acquisition unit acquires the accumulated crude oil yield before decreasing production, the average decreasing production days per month, the initial daily yield before decreasing production of the oil well, the stable daily yield in the linear decreasing period and the stable annual yield in the 1 st year of decreasing production according to the oil production data;
An initial daily reduction rate obtaining unit for obtaining an initial daily reduction rate according to the initial daily yield before the oil well is reduced and the linear reduction period stable daily yield;
An initial annual output obtaining unit that obtains the initial annual output of the oil well based on the steady annual output of the reduced production 1 st year, the average reduced production day per month, the initial daily output of the oil well before the reduced production, and the initial daily reduction rate;
an initial year decreasing rate obtaining unit that obtains an initial year decreasing rate based on the average day of production decreasing per month, the initial day decreasing rate, the initial day production before oil well decreasing production, and the initial year production of the oil well;
the initial annual output acquisition unit includes:
An average difference value obtaining subunit, configured to obtain an average difference value of the production of the adjacent stable years of the oil well according to the average decreasing production days per month, the initial daily production before decreasing production of the oil well, and the initial daily decreasing rate;
And an initial annual output obtaining subunit for obtaining the initial annual output of the oil well according to the average difference value of the adjacent stable annual output of the oil well and the stable annual output of the 1 st year of the decreasing production.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of the method of predicting crude oil technical recoverable quantities as claimed in any one of claims 1 to 4.
7. A computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method of predicting crude oil technical recoverable reserves as claimed in any one of claims 1 to 4.
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