CN109944583B - Method and device for acquiring number of reservoirs in carbonate rock oil well - Google Patents
Method and device for acquiring number of reservoirs in carbonate rock oil well Download PDFInfo
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Abstract
The invention provides a method and a device for acquiring the number of reservoirs in a carbonate rock oil well, wherein the method comprises the following steps: determining an initial number N of reservoirs in a carbonate well; acquiring initial production characteristic information of a carbonate rock oil well; the initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield; acquiring current production characteristic information of a carbonate rock oil well; the current generated characteristic information comprises current choke amount, current oil pressure amount, current daily liquid production amount, current daily oil production amount and current daily water production amount; and if the initial production characteristic information and the current production characteristic information meet the preset conditions, determining that the number of the current reservoirs in the carbonate rock oil well is N + 1. The method and the device for acquiring the number of the reservoirs in the carbonate rock oil well can determine the number of the reservoirs in the carbonate rock oil well.
Description
Technical Field
The invention relates to the technical field of oil field oil extraction engineering, in particular to a method and a device for acquiring the number of reservoirs in a carbonate rock oil well.
Background
Carbonate rock is a generic term for rock composed of precipitated carbonate, mainly limestone and dolomite. Carbonate reservoirs are highly heterogeneous, mainly secondary voids, and the slots form irregularities in and between layers, and are therefore called reservoirs to emphasize their heterogeneity.
For example, in massive or large casing carbonate rocks where the primary porosity has disappeared, the erosion pores, slots, holes are almost the only reservoir spaces, the morphology of which is extremely irregular and its shape can only be described in rough approximation. The carbonate matrix becomes a plug (cap) and it is clear that the plug is not layered but irregular. In general, there are connected and disconnected modes between reservoirs, and the connected reservoir can be used as a reservoir, but for the disconnected reservoir, because the pressure of the used reservoir is continuously reduced during production, pressure difference can be approximately formed between a plurality of sets of reservoirs, and when the pressure difference breaks through the resistance between them, the reservoirs are connected.
Therefore, how to obtain the number of interconnected reservoirs in a carbonate well is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a method and a device for acquiring the number of reservoirs in a carbonate rock oil well, which are used for determining the number of the reservoirs in the carbonate rock oil well.
The embodiment of the invention provides a method for acquiring the number of reservoirs in a carbonate rock oil well, which comprises the following steps:
determining an initial number N of reservoirs in a carbonate well; wherein N is an integer greater than or equal to 1;
acquiring initial production characteristic information of the carbonate rock oil well; the initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield;
acquiring current production characteristic information of the carbonate rock oil well; the current generated characteristic information comprises current choke amount, current oil pressure amount, current daily liquid production amount, current daily oil production amount and current daily water production amount;
if the initial production characteristic information and the current production characteristic information meet preset conditions, determining that the number of current reservoir bodies in the carbonate rock oil well is N + 1; wherein the N +1 reservoirs are a plurality of reservoirs which are communicated with each other.
In an embodiment of the present invention, if the initial production characteristic information and the current production characteristic information satisfy a preset condition, determining that the number of current reservoirs in the carbonate rock oil well is N +1, includes:
comparing the initial oil pressure, the initial daily fluid production, the initial daily oil production, and the daily initial daily fluid production with the current oil pressure, the current daily fluid production, the current daily oil production, and the current daily fluid production when the initial nozzle tip is enlarged;
and if the current oil pressure, the current daily oil production and the current daily water production are greater than the initial oil pressure, the initial daily oil production and the daily initial daily water production, determining that the number of the current reservoirs in the carbonate rock oil well is N + 1.
In an embodiment of the present invention, the acquiring current production characteristic information of the carbonate rock oil well includes:
monitoring the variation of the initial oil pressure when the initial oil nozzle is expanded;
and when the variation of the initial oil pressure is larger than or equal to a preset threshold value, acquiring the current production characteristic information of the carbonate oil well.
In an embodiment of the present invention, if the initial production characteristic information and the current production characteristic information satisfy a preset condition, after determining that the number of current reservoirs in the carbonate rock oil well is N +1, the method further includes:
determining crude oil reserves for each of the N +1 reservoirs in the carbonate well.
In one embodiment of the invention, the determining the crude oil reserves of each of the N +1 reservoirs in the carbonate well comprises:
according to Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well;
according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) Determining a crude oil reserve for an ith reservoir in the carbonate well;
wherein i is more than or equal to 2 and less than or equal to N +1, Np1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of the carbonate well1Representing a formation pressure of a first reservoir; n is a radical ofpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
The embodiment of the invention also provides a device for acquiring the number of reservoirs in the carbonate rock oil well, which comprises:
a determining unit for determining an initial number N of reservoirs in a carbonate well; wherein N is an integer greater than or equal to 1;
the acquisition unit is used for acquiring initial production characteristic information of the carbonate rock oil well; the initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield;
the acquisition unit is also used for acquiring the current production characteristic information of the carbonate rock oil well; the current generated characteristic information comprises current choke amount, current oil pressure amount, current daily liquid production amount, current daily oil production amount and current daily water production amount;
the determining unit is further configured to determine that the number of current reservoirs in the carbonate rock oil well is N +1 if the initial production characteristic information and the current production characteristic information meet a preset condition; wherein the N +1 reservoirs are a plurality of reservoirs which are communicated with each other.
In an embodiment of the present invention, the determining unit is specifically configured to compare the initial oil pressure amount, the initial daily fluid output amount, the initial daily oil output amount, and the daily initial daily water output amount with the current oil pressure amount, the current daily fluid output amount, the current daily oil output amount, and the current daily water output amount when the initial nozzle tip is enlarged; and if the current oil pressure, the current daily oil production and the current daily water production are greater than the initial oil pressure, the initial daily oil production and the daily initial daily water production, determining that the number of the current reservoirs in the carbonate rock oil well is N + 1.
In an embodiment of the invention, the device for acquiring the number of the reservoirs in the carbonate rock oil well further comprises a monitoring unit;
the detection unit is used for monitoring the variation of the initial oil pressure when the initial oil nozzle is expanded;
the acquiring unit is specifically used for acquiring the current production characteristic information of the carbonate oil well when the variation of the initial oil pressure is greater than or equal to a preset threshold value.
In an embodiment of the invention, the determining unit is further configured to determine a crude oil reserve of each of the N +1 reservoirs in the carbonate well.
In an embodiment of the present invention, the determining unit is specifically configured to determine the Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well; and according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) Determining a crude oil reserve for an ith reservoir in the carbonate well;
wherein i is more than or equal to 2 and less than or equal to N +1, Np1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of the carbonate well1Representing a formation pressure of a first reservoir; n is a radical ofpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
According to the method and the device for acquiring the number of the reservoirs in the carbonate rock oil well, when the number of the reservoirs in the carbonate rock oil well is determined, the initial number N of the reservoirs in the carbonate rock oil well is determined, the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well are acquired respectively, then the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well are compared, if the initial production characteristic information and the current production characteristic information meet preset conditions, the number of the reservoirs in the carbonate rock oil well is determined to be increased, namely the number of the current reservoirs in the carbonate rock oil well is determined to be N +1, and therefore the number of the reservoirs in the carbonate rock oil well is acquired.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a method for obtaining the number of reservoirs in a carbonate well according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another method for obtaining the number of reservoirs in a carbonate well according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the amount of oil pressure and the amount of fluid produced according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a variation of production characteristic information provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of an apparatus for acquiring the number of reservoirs in a carbonate well according to an embodiment of the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples. The following specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a method for acquiring the number of reservoirs in a carbonate rock oil well according to an embodiment of the present invention, where the method for acquiring the number of reservoirs in a carbonate rock oil well may be executed by an apparatus for acquiring the number of reservoirs in a carbonate rock oil well, and the apparatus for acquiring the number of reservoirs in a carbonate rock oil well may be independently installed or may be integrated in other devices. Referring to fig. 1, the device for acquiring the number of reservoirs in a carbonate well may include:
s101, determining the initial number N of reservoirs in the carbonate well.
Wherein N is an integer of 1 or more. For example, when N equals 1, the number of reservoirs in the carbonate well may be determined to be 1, when N equals 2, the number of reservoirs in the carbonate well may be determined to be 2, and so on.
S102, acquiring initial production characteristic information of the carbonate oil well.
The initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield.
It should be noted that, in the embodiment of the present invention, the initial production characteristic information may be initial production characteristic information of a first reservoir, and may also be initial production characteristic information of a second or third reservoir, where the initial production characteristic information is initial production characteristic information corresponding to an nth reservoir in S101.
S103, obtaining current production characteristic information of the carbonate oil well.
The current generation characteristic information comprises a current nozzle amount, a current oil pressure amount, a current daily oil production amount and a current daily water production amount.
In the embodiment of the present invention, the current production characteristic information refers to the production characteristic information of the carbonate oil well in the current state.
And S104, if the initial production characteristic information and the current production characteristic information meet preset conditions, determining that the number of the current reservoirs in the carbonate rock oil well is N + 1.
Wherein the N +1 reservoirs are a plurality of reservoirs which are communicated with each other.
After the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well are respectively obtained through the steps S102 and S103, the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well can be compared, and if the initial production characteristic information and the current production characteristic information meet preset conditions, the number of the reservoir bodies in the carbonate rock oil well is determined to be increased, namely the number of the current reservoir bodies in the carbonate rock oil well is determined to be N +1, so that the number of the reservoir bodies in the carbonate rock oil well is obtained.
According to the method for acquiring the number of the reservoirs in the carbonate rock oil well, when the number of the reservoirs in the carbonate rock oil well is determined, the initial number N of the reservoirs in the carbonate rock oil well is determined, the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well are acquired respectively, then the initial production characteristic information of the carbonate rock oil well and the current production characteristic information of the carbonate rock oil well are compared, if the initial production characteristic information and the current production characteristic information meet preset conditions, the number of the reservoirs in the carbonate rock oil well is increased, namely the number of the current reservoirs in the carbonate rock oil well is determined to be N +1, and therefore the number of the reservoirs in the carbonate rock oil well is determined.
Based on the embodiment shown in fig. 1, to more clearly illustrate that if the initial production characteristic information and the current production characteristic information satisfy the preset condition, the number of the current reservoirs in the carbonate rock oil well is determined to be N +1, for example, in the embodiment of the present invention, taking N ═ 1 as an example, please refer to fig. 2, and fig. 2 is a schematic diagram of another method for acquiring the number of reservoirs in the carbonate rock oil well provided by the embodiment of the present invention, where the method for acquiring the number of the reservoirs in the carbonate rock oil well may include:
s201, determining the initial number N of the reservoirs in the carbonate rock oil well.
Wherein N is an integer of 1 or more. For example, N ═ 1 is taken as an example, i.e., in the initial state, the initial number of reservoirs in a carbonate well is 1.
S202, acquiring initial production characteristic information of the carbonate oil well.
The initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield.
For example, when N ═ 1, the initial production characteristic information is the initial production characteristic information when the carbonate well contains only the first reservoir.
S203, monitoring the change amount of the initial oil pressure when the initial nozzle is enlarged.
When the current production characteristic information of the carbonate oil well is obtained, the variation of the initial oil pressure can be monitored when the initial oil nozzle is enlarged, so that whether the current production characteristic information of the carbonate oil well is obtained or not is determined according to the variation of the initial oil pressure.
It should be noted that, when the initial nozzle tip is enlarged, the variation of the initial oil pressure may be monitored in real time, or the variation of the initial oil pressure may be monitored at preset time intervals, and the monitoring may be specifically performed according to actual needs. For example, in the embodiment of the present invention, the change amount of the initial oil pressure is monitored in real time.
And S204, when the variation of the initial oil pressure is larger than or equal to a preset threshold value, acquiring the current production characteristic information of the carbonate oil well.
The current generation characteristic information comprises a current nozzle amount, a current oil pressure amount, a current daily oil production amount and a current daily water production amount.
Optionally, in the embodiment of the present invention, the preset threshold may be any value within a range of greater than or equal to 0.2MPa and less than or equal to 0.5MPa, and may be specifically set according to an actual need, where the number of the preset threshold is specifically, the present invention is not further limited. Illustratively, in the embodiment of the present invention, the preset threshold is 0.2 MPa. Referring to fig. 3, fig. 3 is a schematic diagram of oil pressure and fluid production according to an embodiment of the present invention, in which the abscissa of fig. 3 represents the fluid production and the ordinate represents the oil pressure, and when the fluid production is different, the corresponding oil pressure is different.
Through the above S203, the variation of the initial oil pressure can be monitored in real time, and if the variation of the initial oil pressure is greater than or equal to 0.2MPa, it indicates that the number of the reservoirs in the carbonate oil well may increase at this time, and the current production characteristic information of the carbonate oil well is obtained. Referring to fig. 4, fig. 4 is a schematic diagram illustrating a change of production characteristic information according to an embodiment of the present invention, in fig. 4, an abscissa represents time, and an ordinate represents the production characteristic information, and the production characteristic information changes with time.
S205, when the initial nozzle tip is expanded, the initial oil pressure, the initial daily fluid output, the initial daily oil output and the initial daily water output are compared with the current oil pressure, the current daily fluid output, the current daily oil output and the current daily water output.
After the initial oil pressure, the initial daily oil yield, the initial daily water yield and the current oil pressure, the current daily oil yield and the current daily water yield are respectively obtained through the steps, the initial oil pressure and the current oil pressure, the initial daily oil yield and the current daily oil yield and the initial daily water yield and the current daily water yield can be respectively compared, and the number of the current reservoirs in the carbonate oil well is determined according to the comparison result.
And S206, if the current oil pressure, the current daily oil production and the current daily oil production are larger than the initial oil pressure, the initial daily oil production and the initial daily water production, determining that the number of the current reservoirs in the carbonate oil well is N + 1.
Wherein the N +1 reservoirs are a plurality of reservoirs which are communicated with each other.
If the current oil pressure is greater than the initial oil pressure, the current daily oil production is greater than the initial daily oil production, and the current daily oil production is greater than the initial daily water production, it is said that the number of the reservoir bodies in the carbonate rock oil well is increased, and thus it is determined that the number of the current reservoir bodies in the carbonate rock oil well is N +1, that is, the number of the current reservoir bodies in the carbonate rock oil well becomes 2.
It should be noted that when the initial number N of reservoirs in the carbonate well is determined to be 2, two reservoirs are indicated, it is necessary to acquire initial production characteristic information corresponding to the two reservoirs, and monitor the variation amount of the initial oil pressure amount when the initial nozzle tip is enlarged, when the amount of change in the initial oil pressure amount is 0.2MPa or more, it indicates that the number of reservoirs in the carbonate well may increase, and obtaining current production characteristic information of the carbonate oil well, if the current oil pressure is greater than the initial oil pressure corresponding to the second reservoir, the current daily oil yield is greater than the initial daily oil yield, and the current daily oil yield is greater than the initial daily oil yield, the number of the reservoirs in the carbonate oil well is increased, so that the number of the current reservoirs in the carbonate oil well is determined to be 3, and the like.
In the practical application process, when the number of the reservoirs in the carbonate rock oil well is determined, the initial number N of the reservoirs in the carbonate rock oil well can be determined, the initial production characteristic information of the carbonate rock oil well is obtained, the variation of the initial oil pressure is monitored when the initial oil nozzle is enlarged, when the variation of the initial oil pressure is larger than or equal to a preset threshold value, the possible increase of the number of the reservoirs in the carbonate rock oil well is indicated, the current production characteristic information of the carbonate rock oil well is obtained, the initial oil pressure, the initial daily oil yield and the initial daily water yield are compared with the current oil pressure, the current daily oil yield and the current daily water yield, and if the current oil pressure, the current daily oil yield and the initial oil pressure are larger than the initial oil pressure, the initial daily oil yield and the initial daily water yield, the number of the current reservoirs in the carbonate well is determined to be N +1, thereby determining the number of the current reservoirs in the carbonate well.
After determining that the number of the current reservoirs in the acid salt rock oil well is N +1, the reserve of each of the current N +1 reservoirs in the acid salt rock oil well may be further determined, that is, after determining that the number of the current reservoirs in the carbonate rock oil well is N +1 if the initial production characteristic information and the current production characteristic information satisfy the preset condition at S206, the method may further include:
according to Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well; according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) The crude oil reserves of the ith reservoir in the carbonate well are determined.
Wherein N isp1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of a carbonate well1Representing the formation pressure of the first reservoir, 2 ≦ i ≦ N +1, NpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
For example, in the embodiment of the present invention, N may be acquired in the data acquisition stage respectivelyp1、Bo1、Bo0、Cot、P0And P1And respectively obtaining Np1、Bo1、Bo0、Cot、P0And P1Then, it can be based on Np1Bo1＝N1Bo0Cot(P0-P1) Determining crude oil reserve N of a first reservoir in a carbonate well1. Crude oil reserve N obtained to a first reservoir in a carbonate well1Then N may be added1Substituted into NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) And obtaining the crude oil reserve of the ith reservoir in the carbonate well.
It should be noted that when there are two reservoirs, the reserve N of the second reservoir is obtained2Can be based on Np2Bo2＝(N1+N2)Bo0Cot(P0-P2) Obtaining a crude oil reserve N of a second reservoir in a carbonate well2(ii) a Wherein N isp2Representing the oil production of the second reservoir, Bo2Representing the second reservoir crude oil volume coefficient, P2Representing the formation pressure of the second reservoir. Similarly, when there are three reservoirs, the reserve N of the third reservoir is obtained3Can be based on Np3Bo3＝(N1+N2+N3)Bo0Cot(P0-P3) Obtaining crude oil reserve N of a third reservoir in a carbonate well3(ii) a Similar in sequence, the crude oil reserves of the ith reservoir in the carbonate well can be obtained. Wherein N isp3Represents the oil production of the third reservoir, Bo3Represents the third reservoir crude oil volume coefficient, P3Representing the formation pressure of the third reservoir.
Fig. 5 is a schematic diagram of an apparatus 50 for obtaining the number of reservoirs in a carbonate well according to an embodiment of the present invention, and please refer to fig. 5, the apparatus 50 for obtaining the number of reservoirs in a carbonate well may include:
a determining unit 501 for determining an initial number N of reservoirs in a carbonate well; wherein N is an integer of 1 or more.
An obtaining unit 502, configured to obtain initial production characteristic information of the carbonate oil well; the initial production characteristic information includes an initial choke amount, an initial oil pressure amount, an initial daily liquid yield, an initial daily oil yield, and an initial daily water yield.
The obtaining unit 502 is further configured to obtain current production characteristic information of the carbonate oil well; the current generation characteristic information comprises current choke amount, current oil pressure amount, current daily oil production amount and current daily water production amount.
The determining unit 501 is further configured to determine that the number of current reservoirs in the carbonate rock oil well is N +1 if the initial production characteristic information and the current production characteristic information meet a preset condition; wherein the N +1 reservoirs are a plurality of reservoirs which are communicated with each other.
Optionally, the determining unit 501 is specifically configured to compare the initial oil pressure, the initial daily oil yield, and the initial daily water yield with the current oil pressure, the current daily oil yield, and the current daily water yield when the initial nozzle tip is enlarged; and if the current oil pressure, the current daily oil production and the current daily water production are greater than the initial oil pressure, the initial daily oil production and the daily initial daily water production, determining that the number of the current reservoirs in the carbonate rock oil well is N + 1.
Optionally, the device 50 for obtaining the number of reservoirs in the carbonate well may further comprise a monitoring unit.
The detection unit 503 is configured to monitor a variation amount of the initial oil pressure when the initial nozzle is enlarged;
the obtaining unit 502 is specifically configured to obtain current production characteristic information of the carbonate oil well when the variation of the initial oil pressure is greater than or equal to a preset threshold.
Optionally, the determining unit 501 is further configured to determine crude oil reserves of each of the N +1 reservoirs in the carbonate well.
Optionally, the determining unit 501 is specifically configured to determine the N according to Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well; and according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) Determining a crude oil reserve for an ith reservoir in the carbonate well.
Wherein i is more than or equal to 2 and less than or equal to N +1, Np1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of the carbonate well1Representing a formation pressure of a first reservoir; n is a radical ofpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
The above device 50 for acquiring the number of the reservoirs in the carbonate rock oil well can correspondingly execute the technical scheme of the method for acquiring the number of the reservoirs in the carbonate rock oil well according to any embodiment, and the implementation principle and the technical effect are similar, and are not described herein again.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A method for acquiring the number of reservoirs in a carbonate rock oil well is characterized by comprising the following steps:
a. determining an initial number N of reservoirs in a carbonate well; wherein N is an integer greater than or equal to 1;
b. acquiring initial production characteristic information of an nth reservoir body of the carbonate rock oil well, wherein an initial value of n is 1; the initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield;
c. acquiring current production characteristic information of the carbonate rock oil well; the current production characteristic information comprises current choke amount, current oil pressure amount, current daily liquid production amount, current daily oil production amount and current daily water production amount;
d. if the initial production characteristic information and the current production characteristic information of the nth reservoir body meet preset conditions, determining that the number of the current reservoir bodies in the carbonate rock oil well is N + 1; if not, returning to the step b to continue judging; wherein, N +1 reservoir bodies are a plurality of reservoir bodies that communicate with each other, the preset condition includes that, when the initial choke is enlarged, the current oil pressure amount, the current daily oil production amount and the current daily oil production amount are greater than the initial oil pressure amount, the initial daily oil production amount and the initial daily oil production amount.
2. The method of claim 1, wherein said obtaining current production characteristic information for the carbonate well comprises:
monitoring the variation of the initial oil pressure when the initial oil nozzle is expanded;
and when the variation of the initial oil pressure is larger than or equal to a preset threshold value, acquiring the current production characteristic information of the carbonate oil well.
3. The method according to any one of claims 1 or 2, wherein after determining that the number of the current reservoirs in the carbonate well is N +1 if the initial production characteristic information and the current production characteristic information satisfy a preset condition, further comprising:
determining crude oil reserves for each of the N +1 reservoirs in the carbonate well.
4. The method of claim 3, wherein the determining the crude oil reserves of each of the N +1 reservoirs in the carbonate well comprises:
according to Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well;
according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) Determining a crude oil reserve for an ith reservoir in the carbonate well;
wherein i is more than or equal to 2 and less than or equal to N +1, Np1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of the carbonate well1Representing a formation pressure of a first reservoir; n is a radical ofpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
5. An acquisition device of reservoir body number in carbonate oil well, its characterized in that includes:
a determining unit for a, determining an initial number N of reservoirs in a carbonate well; wherein N is an integer greater than or equal to 1;
the acquisition unit is used for b, acquiring initial production characteristic information of the nth reservoir body of the carbonate rock oil well, wherein the initial value of n is 1; the initial production characteristic information comprises an initial oil nozzle amount, an initial oil pressure amount, an initial daily oil yield and an initial daily water yield;
the acquisition unit is also used for c, acquiring the current production characteristic information of the carbonate rock oil well; the current production characteristic information comprises current choke amount, current oil pressure amount, current daily liquid production amount, current daily oil production amount and current daily water production amount;
the determining unit is further configured to d, if the initial production characteristic information and the current production characteristic information of the nth reservoir body meet preset conditions, determine that the number of the current reservoir bodies in the carbonate rock oil well is N + 1; if not, returning to the step b to continue judging; wherein, N +1 reservoir bodies are a plurality of reservoir bodies that communicate with each other, the preset condition includes that, when the initial choke is enlarged, the current oil pressure amount, the current daily oil production amount and the current daily oil production amount are greater than the initial oil pressure amount, the initial daily oil production amount and the initial daily oil production amount.
6. The device of claim 5, further comprising a monitoring unit;
the monitoring unit is used for monitoring the variable quantity of the initial oil pressure when the initial oil nozzle is expanded;
the acquiring unit is specifically used for acquiring the current production characteristic information of the carbonate oil well when the variation of the initial oil pressure is greater than or equal to a preset threshold value.
7. The apparatus according to any one of claims 5 or 6,
the determination unit is further configured to determine a crude oil reserve for each of the N +1 reservoirs in the carbonate well.
8. The apparatus of claim 7,
the determination unit is specifically configured to determine according to Np1Bo1＝N1Bo0Cot(P0-P1) Determining a crude oil reserve of a first reservoir in the carbonate well; and according to NpiBoi＝(N1+…+Ni)Bo0Cot(P0-Pi) Determining a crude oil reserve for an ith reservoir in the carbonate well;
wherein i is more than or equal to 2 and less than or equal to N +1, Np1Representing the oil production of the first reservoir, Bo1Representing the first reservoir crude oil volume coefficient, N1Representing the crude oil reserve of the first reservoir, Bo0Denotes the initial crude oil volume coefficient, CotRepresenting the original crude compression factor, P0Representing the original formation pressure, P, of the carbonate well1Representing a formation pressure of a first reservoir; n is a radical ofpiRepresents the oil production of the i-th reservoir, BoiRepresents the volume coefficient of the i-th reservoir crude oil, NiRepresents the crude oil reserve, P, of the ith reservoiriRepresenting the formation pressure of the ith reservoir.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265281A (en) * | 2014-10-08 | 2015-01-07 | 成都北方石油勘探开发技术有限公司 | Method for predicting well yield of sealed, unsaturated oil reservoirs through elastic driving water-flooding extraction |
| CN105019894A (en) * | 2015-07-29 | 2015-11-04 | 长江大学 | Method and system for establishing multilayer oil pool inter-well connectivity model |
| CN105673001A (en) * | 2014-11-20 | 2016-06-15 | 中国石油天然气股份有限公司 | Processing method for reduction in formation pressure of carbonatite single well |
| CN107292074A (en) * | 2016-04-01 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of inter well connectivity determination methods |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9308884D0 (en) * | 1993-04-29 | 1993-06-16 | Archaeus Tech Group | Acidising oil reservoirs |
| CA2818991A1 (en) * | 2010-11-30 | 2012-06-07 | Electro-Petroleum, Inc. | Method for enhanced oil recovery from carbonate reservoirs |
| US9097821B2 (en) * | 2012-01-10 | 2015-08-04 | Chevron U.S.A. Inc. | Integrated workflow or method for petrophysical rock typing in carbonates |
| CN105464652A (en) * | 2015-12-03 | 2016-04-06 | 恒泰艾普石油天然气技术服务股份有限公司 | Dynamic reserve calculation method and system for fracture and cave type carbonatite oil reservoir fracture and cave unit |
-
2017
- 2017-12-19 CN CN201711375438.8A patent/CN109944583B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265281A (en) * | 2014-10-08 | 2015-01-07 | 成都北方石油勘探开发技术有限公司 | Method for predicting well yield of sealed, unsaturated oil reservoirs through elastic driving water-flooding extraction |
| CN105673001A (en) * | 2014-11-20 | 2016-06-15 | 中国石油天然气股份有限公司 | Processing method for reduction in formation pressure of carbonatite single well |
| CN105019894A (en) * | 2015-07-29 | 2015-11-04 | 长江大学 | Method and system for establishing multilayer oil pool inter-well connectivity model |
| CN107292074A (en) * | 2016-04-01 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of inter well connectivity determination methods |
Non-Patent Citations (1)
| Title |
|---|
| 利用单井动态识别缝洞型碳酸盐岩油藏多缝洞体—以撒哈拉塘油田哈6井区为例;王平等;《新疆石油地质》;20170601;第38卷(第3期);第363-368页 * |
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