CN110805416A - Method and device for evaluating polymer flooding effect - Google Patents
Method and device for evaluating polymer flooding effect Download PDFInfo
- Publication number
- CN110805416A CN110805416A CN201811604141.9A CN201811604141A CN110805416A CN 110805416 A CN110805416 A CN 110805416A CN 201811604141 A CN201811604141 A CN 201811604141A CN 110805416 A CN110805416 A CN 110805416A
- Authority
- CN
- China
- Prior art keywords
- polymer flooding
- index
- well
- evaluation index
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/40—Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a method and a device for evaluating a polymer flooding effect. Wherein, the method comprises the following steps: obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data. The invention solves the technical problems that the evaluation of the polymer flooding effect of the conglomerate oil reservoir in the prior art is inaccurate due to incomplete consideration and incomplete evaluation system.
Description
Technical Field
The invention relates to the field of oilfield development, in particular to a method and a device for evaluating a polymer flooding effect.
Background
With the continuous deepening of the development of old oil fields, the water flooding effect is worse and worse, particularly for conglomerate oil reservoirs with strong heterogeneity; conglomerate oil reservoir stratum rock particles are mixed, the heterogeneity is strong, the pore structure is complex, water flow dominant channels are easily formed, the injected water wave and the volume are rapidly reduced, the water content is rapidly increased, the oil field development effect is influenced, and a new displacement mode is required to be adopted. The polymer mainly has the functions of improving the viscosity of water, changing the oil-water fluidity ratio and expanding the swept volume. For a conglomerate oil reservoir with a complex pore structure characteristic, polymer flooding is a commonly used tertiary oil recovery method, and can obviously play a role in precipitation and oil increment under proper conditions. Therefore, it is very important to be able to accurately and objectively evaluate the polymer flooding effect of the conglomerate reservoir.
At present, the evaluation of the polymer flooding effect of the conglomerate reservoir is only considered from one or more aspects of the recovery rate condition, the water content change, the degree of polymerization and the like after the polymer flooding, and generally, an evaluator judges and evaluates according to subjective judgment, so that in the process of evaluating the polymer flooding effect of the conglomerate reservoir, the considered factors are not comprehensive enough, an evaluation system is not perfect enough, and the obtained evaluation conclusion is not accurate, and the reliability and the persuasion are lacked.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for evaluating a polymer flooding effect, which are used for at least solving the technical problems that the evaluation of the polymer flooding effect of a conglomerate oil reservoir in the prior art is inaccurate due to the fact that the considered factors are not comprehensive enough and the evaluation system is not perfect.
According to an aspect of an embodiment of the present invention, there is provided a method of evaluating polymer flooding effect, including: obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
Further, the polymer flooding effect evaluation index includes: before obtaining the pre-established polymer flooding effect evaluation index, the method further comprises: obtaining a first response type of the production well, wherein the first response type at least comprises: an immediate response and an immediate response; determining a first evaluation index of the production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period; and establishing the first polymer flooding effect evaluation index in advance according to the first response type and the first evaluation index.
Further, the index ranking data includes: the first index grading data of the oil production well, which is used for determining the index grading data of the oil production equipment adopting the polymer flooding mode, comprises the following steps: obtaining a plurality of first evaluation indexes of a plurality of oil production wells in each well zone; sequencing the first evaluation indexes to obtain a first sequencing result; and dividing the index grades of the plurality of oil production wells based on the first sequencing result to obtain the first index grading data.
Further, the evaluating the polymer flooding effect of the oil recovery equipment according to the polymer flooding effect evaluation index and the index grading data includes: and evaluating the polymer flooding effect of the oil production well according to the first polymer flooding effect evaluation index and the first index grading data.
Further, the polymer flooding effect evaluation index includes: the second polymer flooding effectiveness evaluation index for the well group, prior to obtaining the pre-established polymer flooding effectiveness evaluation index, the method further comprising: obtaining a second response type for the well group, wherein the second response type at least comprises: an immediate response and an immediate response; determining a second evaluation index for the well group, wherein the second evaluation index comprises at least: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude; and establishing the second polymer flooding effect evaluation index in advance according to the second response type and the second evaluation index.
Further, the index ranking data includes: the second index rating data of the well group, which is used for determining the index rating data of the oil extraction equipment adopting the polymer flooding mode, comprises the following steps: obtaining a plurality of second evaluation indexes of the plurality of well groups in each well zone; sequencing a plurality of second evaluation indexes to obtain a second sequencing result; and dividing the index grades of the plurality of well groups based on the second sequencing result to obtain the second index grading data.
Further, the evaluating the polymer flooding effect of the oil recovery equipment according to the polymer flooding effect evaluation index and the index grading data includes: and evaluating the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index grading data.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for evaluating polymer flooding effect, including: the device comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring a pre-established polymer flooding effect evaluation index, and the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; a determination module, configured to determine index classification data of an oil recovery device using a polymer flooding method, where the oil recovery device at least includes: a production well and a well group, wherein the well group comprises a plurality of the production wells; and the evaluation module is used for evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program is executed, the apparatus on which the storage medium is located is controlled to execute any one of the above methods for evaluating a polymer flooding effect.
According to another aspect of the embodiments of the present invention, there is also provided a processor, configured to run a program, where the program is run to perform any one of the above methods for evaluating polymer flooding effect.
In the embodiment of the invention, a pre-established polymer flooding effect evaluation index is obtained, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; according to the polymer flooding effect evaluation index and the index grading data, the polymer flooding effect of the oil extraction equipment is evaluated, the polymer flooding effect evaluation index and the index grading data are established by comprehensively considering the polymer flooding validity period, the oil increment amount, the maximum precipitation amplitude and other factors of the oil production well and the well group, so that the polymer flooding effect evaluation of the conglomerate oil reservoir is achieved, the purposes of comprehensive consideration of the factors and perfect evaluation system are achieved, the accurate and objective technical effect of improving the evaluation conclusion is achieved, and the technical problems that the evaluation of the conglomerate oil reservoir polymer flooding effect in the prior art is inaccurate due to incomplete consideration of the factors and imperfect evaluation system are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of evaluating polymer flooding effectiveness according to an embodiment of the present invention;
FIG. 2 is a flow chart of an alternative method of evaluating polymer flooding effectiveness in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of an alternative method of evaluating polymer flooding effectiveness in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for evaluating polymer flooding effect according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above 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 capable of operation in sequences other than those illustrated or 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.
First, in order to facilitate understanding of the embodiments of the present invention, some terms or nouns referred to in the present invention will be explained as follows:
polymer flooding: is a production increasing measure for injecting polymer into stratum to drive oil.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method of evaluating polymer flooding effects, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 1 is a flow chart of a method of evaluating polymer flooding effectiveness according to an embodiment of the present invention, as shown in fig. 1, comprising the steps of:
step S102, obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir;
step S104, determining index grading data of oil extraction equipment adopting a polymer flooding mode, wherein the oil extraction equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells;
and step S106, evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
It should be noted that the embodiment of the method for evaluating the polymer flooding effect provided by the embodiment of the present application may be used for, but is not limited to, evaluating the polymer flooding effect of a conglomerate reservoir, where rock particles in a conglomerate reservoir layer are mixed, the heterogeneity is strong, the pore structure is complex, a water flow dominant channel is easily formed, the injected water wave and the volume are rapidly reduced, and the water content is rapidly increased, which affects the oil field development effect, so that for a conglomerate reservoir with a complex pore structure, the polymer flooding may significantly play a role in precipitation and oil increment.
Optionally, the polymer flooding mode is to add a small amount of water-soluble high molecular polymer into the injected water, and improve the mobility ratio and the sweep efficiency by increasing the viscosity of the water phase and reducing the permeability of the water phase, thereby improving the oil recovery rate of the crude oil.
Optionally, the polymer flooding effect evaluation index includes: a first polymer flooding effect evaluation index of the oil production well and a second polymer flooding effect evaluation index of the well group; the index classification data includes: the first index grading data of the oil production well and the second index grading data of the well group; the oil recovery apparatus at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells.
The method comprises the steps of obtaining a first polymer flooding effect evaluation index of the oil production well and a second polymer flooding effect evaluation index of the well group which are established in advance, determining first index grading data of the oil production well adopting a polymer flooding mode and second index grading data of the well group, and further evaluating the polymer flooding effect of the oil production well according to the first polymer flooding effect evaluation index and the first index grading data; and evaluating the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index grading data.
Through the embodiment, the polymer flooding effect factor is considered more comprehensively, the polymer flooding effect is evaluated more scientifically and reasonably, a reliable basis is provided for making a production system, and the method has important practical significance for guiding further yield increasing measures; the problems that in the process of evaluating the polymer flooding effect of the conglomerate oil reservoir, the consideration factors are not comprehensive enough, the evaluation system is not complete enough, the obtained conclusion is lack of credibility and persuasion and the like are solved, the scientific and reasonable evaluation of the polymer flooding effect of the conglomerate oil reservoir is realized, and a reliable basis is provided for further production measures.
In the embodiment of the invention, a pre-established polymer flooding effect evaluation index is obtained, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; according to the polymer flooding effect evaluation index and the index grading data, the polymer flooding effect of the oil extraction equipment is evaluated, the polymer flooding effect evaluation index and the index grading data are established by comprehensively considering the polymer flooding validity period, the oil increment amount, the maximum precipitation amplitude and other factors of the oil production well and the well group, so that the polymer flooding effect evaluation of the conglomerate oil reservoir is achieved, the purposes of comprehensive consideration of the factors and perfect evaluation system are achieved, the accurate and objective technical effect of improving the evaluation conclusion is achieved, and the technical problems that the evaluation of the conglomerate oil reservoir polymer flooding effect in the prior art is inaccurate due to incomplete consideration of the factors and imperfect evaluation system are solved.
In an alternative embodiment, fig. 2 is a flow chart of an alternative method for evaluating polymer flooding effect according to an embodiment of the present invention, and as shown in fig. 2, the polymer flooding effect evaluation index includes: before obtaining the pre-established polymer flooding effect evaluation index, the method further comprises:
step S202, a first response type of the oil production well is obtained, wherein the first response type at least comprises: an immediate response and an immediate response;
step S204, determining a first evaluation index of the oil production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period;
step S206, pre-establishing the first polymer flooding effect evaluation index according to the first response type and the first evaluation index.
In the above optional embodiment, the first response type of the oil production well may be obtained by analyzing the block geology and production dynamics of the oil production well, and optionally, the effective response of the oil production well at least includes: increasing oil, lowering water, increasing liquid and raising working fluid level.
Alternatively, because the production wells after polymer flooding have different effect times and effect degrees, the period from the beginning of the effect to the failure of the production wells is called the period of validity of a single well.
Wherein, the validity period can be calculated by, but not limited to: the effective period time is calculated according to the actual production increasing days of the oil well corresponding to the polymer flooding water injection well in an accumulated mode, and the statistics of the effective period is not limited by the annual period. After polymer flooding, the corresponding oil well is considered to start to take effect if it meets one of the following conditions in the absence of other stimulation measures:
a. the daily oil yield is increased, and the water content is reduced by more than 3 percent;
b. the daily oil yield is increased by more than 10 percent, and the water content is unchanged;
c. the daily oil yield is unchanged, and the water content is reduced by more than 10 percent;
d. the water content is increased by less than 5 percent, and the daily oil yield is increased by 15 percent or more;
e. the yield decline slowed down significantly.
It should be noted that changes in the working regime (e.g., pumping well parameters) during the polymer flooding life should not affect the statistics of the polymer flooding effect.
Optionally, the failure definition may be performed, but is not limited to, by: and after the polymer flooding well takes effect on the corresponding oil well, if any condition in the calculation of the validity period does not exist for more than 3 months continuously, the corresponding oil well is regarded as invalid. And, well failure is defined by a yield decrement value returning to a polymer pre-flood level, and a negative value for more than 3 months of monthly oil gain.
Optionally, the oil increment of the single well during the validity period can be calculated by, but is not limited to: and subtracting the monthly yield of the polymer flooding from the base number of the single well to obtain the monthly oil increment (taking a positive value), and accumulating and summing to obtain the accumulated oil increment of the single well.
QIncrease＝Qn-QBase of……………………………………(1)
In the formula: qIncreaseIncreasing oil quantity in the nth month after single well polymer flooding is effective; qBase ofIs the single well monthly production base before polymer flooding, t; qnThe oil yield at the nth month after the single-well polymer flooding takes effect, t;
Qtired of＝∑QIncrease………………………………………(2)
In the formula: sigma QIncreaseThe sum of the accumulated oil increment of the corresponding oil well in the effective period is t;
optionally, the maximum precipitation amplitude during the valid period may be calculated by, but is not limited to, the following method: the maximum precipitation amplitude during the period of validity is subtracted from the minimum water content after (during the period of validity) polymer flooding by the water content before polymer flooding.
In the formula: Δ fwMaximum precipitation amplitude, f; f. ofBase ofF is the water content base value before adjustment;
is the lowest water content during the polymer flooding life, f.
Further, in the embodiment of the present application, the first polymer flooding effect evaluation index is established in advance based on the first response type and the first evaluation index.
In an alternative embodiment, fig. 3 is a flow chart of an alternative method of evaluating polymer flooding effect according to an embodiment of the present invention, as shown in fig. 3, the index rating data comprises: the first index grading data of the oil production well, which is used for determining the index grading data of the oil production equipment adopting the polymer flooding mode, comprises the following steps:
step S302 of acquiring a plurality of first evaluation indexes of the plurality of producing wells in each well zone;
step S304, sequencing a plurality of first evaluation indexes to obtain a first sequencing result;
step S306, dividing the index levels of the plurality of oil production wells based on the first ranking result to obtain the first index ranking data.
Optionally, the first evaluation index at least includes: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period; the sorting manner may be, but is not limited to, descending sorting and ascending sorting.
In this embodiment of the present application, according to a statistical result of first evaluation indexes of a plurality of oil production wells in each well zone oil well, the validity period of a single well, the oil increment of the single well in the validity period, and the maximum precipitation amplitude in the validity period in the first evaluation index may be sorted in a descending order, and the index levels of the plurality of oil production wells may be divided according to an equally-divided distribution interval based on the first sorting result, so as to divide the first index classification data into good, medium, and bad three grades.
In an optional embodiment, the evaluating the polymer flooding effect of the oil recovery equipment according to the polymer flooding effect evaluation index and the index grading data includes:
and a step S402 of evaluating the polymer flooding effect of the oil production well according to the first polymer flooding effect evaluation index and the first index grading data.
Optionally, but not limited to, the polymer flooding effect of the oil production well can be evaluated by referring to the first index grading data according to the first polymer flooding effect evaluation index, the single well validity period, the single well oil increment amount in the validity period, and the maximum precipitation amplitude in the validity period.
In an alternative embodiment, the polymer flooding effect evaluation index includes: the second polymer flooding effectiveness evaluation index for the well group, prior to obtaining the pre-established polymer flooding effectiveness evaluation index, the method further comprising:
step S502, obtaining a second response type of the well group, where the second response type at least includes: an immediate response and an immediate response;
step S504, determining a second evaluation index of the well group, where the second evaluation index at least includes: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude;
step S506 is performed to establish the second polymer flooding effect evaluation index in advance according to the second response type and the second evaluation index.
In the above alternative embodiment, the desired response of the well group comprises at least: type A response: the liquid oil amount is increased, and the water content is increased (stable); type B response: the liquid oil content is increased, and the water content is reduced; type C response: the stable oil content is increased, and the water content is reduced; class D response: the oil quantity is stable, and the water content is reduced; class E response: the liquid amount rises; class F response: the working fluid level rises.
It should be noted that the above-mentioned "a-type response" reflects that the underground energy is supplemented, the water channeling channel is blocked, but the contradiction between layers and in-layer is intensified, so that the water content is increased; the B-type response belongs to the effect characteristics of improvement and combined action of plane contradiction and interlayer contradiction; the C-type response reflects that the water channeling channel with larger level difference but smaller volume is blocked; the "class D response" described above is characteristic of the effectiveness of plugging a fracture.
Optionally, the above-mentioned effectiveness ratio of polymer flooding is the percentage of the number of effective wells corresponding to the polymer flooding well group in the total number of wells in the well group, which is called the oil well efficiency, wherein the higher the effectiveness ratio of polymer flooding in the well group is, the better the polymer flooding effect is.
In the formula: rEffect of (1)Efficiency is seen for the well group; n is a radical ofEffect of (1)The number of wells in the well group with effect; n is a radical ofGeneral assemblyThe total number of wells in the well group.
Optionally, the oil increment of the well group refers to the sum of oil increments of single wells of the oil wells corresponding to the polymer flooding well group.
QGroup tired＝∑QTired of(6)
In the formula: qGroup tiredIncreasing the oil quantity for the well group in the valid period; qTired ofThe oil quantity of a single well is increased within the validity period.
Optionally, the above-mentioned well group precipitation amplitude refers to the sum of the precipitation amplitudes of the oil wells corresponding to the polymer flooding well group.
ΔfGroup w＝∑Δfw (7)
In the formula: Δ fGroup wThe maximum precipitation amplitude of the well group in the valid period; Δ fwThe maximum precipitation amplitude of a single well in the period of validity.
Further, in the embodiment of the present application, the second polymer flooding effect evaluation index is established in advance according to the second response type and the second evaluation index.
In an alternative embodiment, the index ranking data includes: the second index rating data of the well group, which is used for determining the index rating data of the oil extraction equipment adopting the polymer flooding mode, comprises the following steps:
step S602, acquiring a plurality of second evaluation indexes of the plurality of well groups in each well zone;
step S604, sequencing a plurality of second evaluation indexes to obtain a second sequencing result;
step S606, the index levels of the plurality of well groups are divided based on the second sorting result, so as to obtain the second index grading data.
Optionally, the second evaluation index at least includes: the well group polymer flooding efficiency, the well group oil increasing amount and the well group dewatering amplitude. The sorting manner may be, but is not limited to, descending sorting and ascending sorting.
In this embodiment, according to the statistical result of the second evaluation indexes of the plurality of well groups in each well oil well, the well group polymer flooding efficiency, the well group oil increment amount, and the well group precipitation amplitude in the second evaluation indexes are sorted in a descending order, the index grades of the plurality of well groups are divided according to an equally-divided distribution interval based on the second sorting result, and the second index grading data is divided into good, medium, and poor three grades.
In an optional embodiment, the evaluating the polymer flooding effect of the oil recovery equipment according to the polymer flooding effect evaluation index and the index grading data includes:
step S702, evaluating the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index classification data.
In the above alternative embodiment, the polymer flooding effect of the well group may be further evaluated, but not limited to, according to the second polymer flooding effect evaluation index, according to the well group polymer flooding efficiency, the well group oil increment amount, the well group precipitation magnitude, and with reference to the second index grading data.
Example 2
According to an embodiment of the present invention, there is also provided an embodiment of an apparatus for implementing the method for evaluating a polymer flooding effect, fig. 4 is a schematic structural diagram of an apparatus for evaluating a polymer flooding effect according to an embodiment of the present invention, and as shown in fig. 4, the apparatus for evaluating a polymer flooding effect includes: an acquisition module 40, a determination module 42, and an evaluation module 44, wherein:
the acquiring module 40 is configured to acquire a pre-established polymer flooding effect evaluation index, where the polymer flooding effect evaluation index is used to evaluate a polymer flooding effect of a conglomerate reservoir; a determination module 42, configured to determine index rating data of an oil recovery device using polymer flooding, where the oil recovery device at least includes: a production well and a well group, wherein the well group comprises a plurality of the production wells; and an evaluation module 44, configured to evaluate the polymer flooding effect of the oil recovery equipment according to the polymer flooding effect evaluation index and the index grading data.
It should be noted that the above modules may be implemented by software or hardware, for example, for the latter, the following may be implemented: the modules can be located in the same processor; alternatively, the modules may be located in different processors in any combination.
It should be noted here that the above-mentioned acquiring module 40, determining module 42 and evaluating module 44 correspond to steps S102 to S106 in embodiment 1, and the above-mentioned modules are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to what is disclosed in embodiment 1 above. It should be noted that the modules described above may be implemented in a computer terminal as part of an apparatus.
It should be noted that, reference may be made to the relevant description in embodiment 1 for alternative or preferred embodiments of this embodiment, and details are not described here again.
The above apparatus for evaluating polymer flooding effect may further include a processor and a memory, and the above acquiring module 40, determining module 42, and evaluating module 44, etc. are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.
The processor comprises a kernel, and the kernel calls a corresponding program unit from the memory, wherein one or more than one kernel can be arranged. The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
According to the embodiment of the application, the embodiment of the storage medium is also provided. Optionally, in this embodiment, the storage medium includes a stored program, and the apparatus in which the storage medium is located is controlled to execute any one of the above methods for evaluating the polymer flooding effect when the program is executed.
Optionally, in this embodiment, the storage medium may be located in any one of a group of computer terminals in a computer network, or in any one of a group of mobile terminals, and the storage medium includes a stored program.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: obtaining a first response type of the production well, wherein the first response type at least comprises: an immediate response and an immediate response; determining a first evaluation index of the production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period; and establishing the first polymer flooding effect evaluation index in advance according to the first response type and the first evaluation index.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: obtaining a plurality of first evaluation indexes of a plurality of oil production wells in each well zone; sequencing the first evaluation indexes to obtain a first sequencing result; and dividing the index grades of the plurality of oil production wells based on the first sequencing result to obtain the first index grading data.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: and evaluating the polymer flooding effect of the oil production well according to the first polymer flooding effect evaluation index and the first index grading data.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: obtaining a second response type for the well group, wherein the second response type at least comprises: an immediate response and an immediate response; determining a second evaluation index for the well group, wherein the second evaluation index comprises at least: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude; and establishing the second polymer flooding effect evaluation index in advance according to the second response type and the second evaluation index.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: obtaining a plurality of second evaluation indexes of the plurality of well groups in each well zone; sequencing a plurality of second evaluation indexes to obtain a second sequencing result; and dividing the index grades of the plurality of well groups based on the second sequencing result to obtain the second index grading data.
Optionally, the program controls the device on which the storage medium is located to perform the following functions when running: and evaluating the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index grading data.
According to the embodiment of the application, the embodiment of the processor is also provided. Optionally, in this embodiment, the processor is configured to execute a program, where the program executes any one of the above methods for evaluating polymer flooding effect.
The embodiment of the application provides equipment, the equipment comprises a processor, a memory and a program which is stored on the memory and can run on the processor, and the following steps are realized when the processor executes the program: obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
Optionally, when the processor executes the program, a first response type of the oil production well may be further obtained, where the first response type at least includes: an immediate response and an immediate response; determining a first evaluation index of the production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period; and establishing the first polymer flooding effect evaluation index in advance according to the first response type and the first evaluation index.
Optionally, when the processor executes a program, a plurality of first evaluation indexes of a plurality of the production wells in each well zone may be acquired; sequencing the first evaluation indexes to obtain a first sequencing result; and dividing the index grades of the plurality of oil production wells based on the first sequencing result to obtain the first index grading data.
Alternatively, the processor may be configured to evaluate the polymer flooding effect of the production well based on the first polymer flooding effect evaluation index and the first index classification data when executing the program.
Optionally, when the processor executes the program, a second response type of the well group may be further obtained, where the second response type at least includes: an immediate response and an immediate response; determining a second evaluation index for the well group, wherein the second evaluation index comprises at least: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude; and establishing the second polymer flooding effect evaluation index in advance according to the second response type and the second evaluation index.
Optionally, when the processor executes a program, a plurality of second evaluation indexes of a plurality of well groups in each well zone may be obtained; sequencing a plurality of second evaluation indexes to obtain a second sequencing result; and dividing the index grades of the plurality of well groups based on the second sequencing result to obtain the second index grading data.
Alternatively, the processor may be configured to evaluate the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index classification data when executing the program.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir; determining index grading data of oil production equipment adopting a polymer flooding mode, wherein the oil production equipment at least comprises: a production well and a well group, wherein the well group comprises a plurality of the production wells; and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
Optionally, when the processor executes the program, a first response type of the oil production well may be further obtained, where the first response type at least includes: an immediate response and an immediate response; determining a first evaluation index of the production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period; and establishing the first polymer flooding effect evaluation index in advance according to the first response type and the first evaluation index.
Optionally, when the computer program product executes a program, a plurality of first evaluation indexes of a plurality of the production wells in each well zone may be acquired; sequencing the first evaluation indexes to obtain a first sequencing result; and dividing the index grades of the plurality of oil production wells based on the first sequencing result to obtain the first index grading data.
Alternatively, when the computer program product executes a program, the polymer flooding effect of the oil production well may be evaluated based on the first polymer flooding effect evaluation index and the first index classification data.
Optionally, when the computer program product executes a program, a second response type of the well group may be further obtained, where the second response type at least includes: an immediate response and an immediate response; determining a second evaluation index for the well group, wherein the second evaluation index comprises at least: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude; and establishing the second polymer flooding effect evaluation index in advance according to the second response type and the second evaluation index.
Optionally, when the computer program product executes a program, a plurality of second evaluation indexes of a plurality of well groups in each well zone may be obtained; sequencing a plurality of second evaluation indexes to obtain a second sequencing result; and dividing the index grades of the plurality of well groups based on the second sequencing result to obtain the second index grading data.
Alternatively, when the computer program product executes a program, the polymer flooding effect of the well group may be evaluated based on the second polymer flooding effect evaluation index and the second index classification data.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of evaluating polymer flooding, comprising:
obtaining a pre-established polymer flooding effect evaluation index, wherein the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir;
determining index rating data of a polymer flooding based oil recovery device, wherein the oil recovery device comprises at least: a production well, a well group comprising a plurality of said production wells;
and evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
2. The method of claim 1, wherein the polymer flooding effect evaluation index comprises: the first polymer flooding effect evaluation index of the production well, prior to obtaining a pre-established polymer flooding effect evaluation index, the method further comprising:
obtaining a first response type of the production well, wherein the first response type comprises at least: an immediate response and an immediate response;
determining a first evaluation index of the oil production well, wherein the first evaluation index at least comprises: the effective period of a single well, the oil increment of the single well in the effective period and the maximum precipitation amplitude in the effective period;
and establishing the first polymer flooding effect evaluation index in advance according to the first response type and the first evaluation index.
3. The method of claim 2, wherein the metric rating data comprises: the first index grading data of the oil production well, which is used for determining the index grading data of the oil production equipment adopting the polymer flooding mode, comprises the following steps:
obtaining a plurality of first evaluation indexes of a plurality of oil production wells in each well area;
sequencing the first evaluation indexes to obtain a first sequencing result;
and dividing the index grades of the oil production wells based on the first sequencing result to obtain the first index grading data.
4. The method of claim 3, wherein evaluating the polymer flooding effect of the oil recovery equipment based on the polymer flooding effect evaluation index and the index grading data comprises:
and evaluating the polymer flooding effect of the oil production well according to the first polymer flooding effect evaluation index and the first index grading data.
5. The method of claim 1, wherein the polymer flooding effect evaluation index comprises: a second polymer flooding effectiveness evaluation index for the well group, the method further comprising, prior to obtaining a pre-established polymer flooding effectiveness evaluation index:
obtaining a second response type for the well group, wherein the second response type comprises at least: an immediate response and an immediate response;
determining a second evaluation index for the well group, wherein the second evaluation index comprises at least: well group polymer flooding efficiency, well group oil increasing amount and well group dewatering amplitude;
and according to the second response type and the second evaluation index, pre-establishing the second polymer flooding effect evaluation index.
6. The method of claim 5, wherein the metric rating data comprises: and determining index grading data of the oil extraction equipment adopting a polymer flooding mode by using second index grading data of the well group, wherein the index grading data comprises the following steps:
obtaining a plurality of second evaluation indexes of a plurality of well groups in each well zone;
sequencing the second evaluation indexes to obtain a second sequencing result;
and dividing the index grades of the plurality of well groups based on the second sequencing result to obtain second index grading data.
7. The method of claim 6, wherein evaluating the polymer flooding effect of the oil recovery equipment based on the polymer flooding effect evaluation index and the index grading data comprises:
and evaluating the polymer flooding effect of the well group according to the second polymer flooding effect evaluation index and the second index grading data.
8. An apparatus for evaluating polymer flooding effects, comprising:
the device comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring a pre-established polymer flooding effect evaluation index, and the polymer flooding effect evaluation index is used for evaluating the polymer flooding effect of the conglomerate oil reservoir;
a determination module for determining indicator rating data of an oil recovery device using polymer flooding, wherein the oil recovery device comprises at least: a production well, a well group comprising a plurality of said production wells;
and the evaluation module is used for evaluating the polymer flooding effect of the oil extraction equipment according to the polymer flooding effect evaluation index and the index grading data.
9. A storage medium comprising a stored program, wherein the program, when executed, controls an apparatus in which the storage medium is located to perform the method for evaluating a polymer flooding effect of any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of evaluating a polymer flooding effect of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604141.9A CN110805416B (en) | 2018-12-26 | 2018-12-26 | Method and device for evaluating polymer flooding effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604141.9A CN110805416B (en) | 2018-12-26 | 2018-12-26 | Method and device for evaluating polymer flooding effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110805416A true CN110805416A (en) | 2020-02-18 |
| CN110805416B CN110805416B (en) | 2022-07-05 |
Family
ID=69487231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811604141.9A Active CN110805416B (en) | 2018-12-26 | 2018-12-26 | Method and device for evaluating polymer flooding effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805416B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010138558A2 (en) * | 2009-05-27 | 2010-12-02 | Chevron U.S.A. Inc. | Computer-implemented systems and methods for screening and predicting the performance of enhanced oil recovery and improved oil recovery methods |
| CN104675372A (en) * | 2015-01-30 | 2015-06-03 | 中国石油大学(华东) | Method for distributing polymer flooding injection rate and polymer flooding produced rate |
| CN107832900A (en) * | 2017-05-09 | 2018-03-23 | 中国石油化工股份有限公司 | Sandy conglomerate bodies Evaluation of Affusion Effect method |
-
2018
- 2018-12-26 CN CN201811604141.9A patent/CN110805416B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010138558A2 (en) * | 2009-05-27 | 2010-12-02 | Chevron U.S.A. Inc. | Computer-implemented systems and methods for screening and predicting the performance of enhanced oil recovery and improved oil recovery methods |
| CN104675372A (en) * | 2015-01-30 | 2015-06-03 | 中国石油大学(华东) | Method for distributing polymer flooding injection rate and polymer flooding produced rate |
| CN107832900A (en) * | 2017-05-09 | 2018-03-23 | 中国石油化工股份有限公司 | Sandy conglomerate bodies Evaluation of Affusion Effect method |
Non-Patent Citations (2)
| Title |
|---|
| 石晋等: ""聚合物驱跟踪评价软件系统开发应用"", 《内蒙古石油化工》 * |
| 陈民锋等: "海上油田普通稠油聚合物驱效果分级评价研究"", 《复杂油气藏》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110805416B (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104915512B (en) | It is a kind of to predict oil field produced degree and the method for moisture content | |
| CN102913233B (en) | Method for recognizing dominant flow channel based on zero dimension comparison plate | |
| CN103244087B (en) | A kind of low-permeability oil deposit profile control and water plugging selects well decision-making technique | |
| CN104806231B (en) | The method for quantitatively evaluating of thickened oil steam-stimulated Water Flooding Layer | |
| CN102419787B (en) | Method and system for identifying water flow dominant channels of high-water-content oil field | |
| CN109209312B (en) | Resource development method suitable for polymer flooding | |
| CN109403962A (en) | Oil reservoir block Monitoring Indexes association analysis method | |
| CN105631138A (en) | Oil and gas reservoir development unit and well group numerical simulation dynamic analysis method | |
| CN107035348B (en) | A kind of oil field profile control multiplicity well choosing method and device | |
| CN105631754A (en) | Method and apparatus for determining output profile data of overseas oil field | |
| CN107060705A (en) | A kind of CO2Oil reservoirs has channeling passage dynamic playback method | |
| Craig et al. | Permeability, pore pressure, and leakoff-type distributions in Rocky Mountain basins | |
| CN110805416B (en) | Method and device for evaluating polymer flooding effect | |
| CN106014365A (en) | Method for predicting water-flooding development oil field output decline rate | |
| CN111706320A (en) | Measure well/layer rapid screening plate establishing method based on yield and water content change master control factor cluster analysis | |
| CN107832900B (en) | Conglomerate oil reservoir water injection effect evaluation method | |
| CN108984952A (en) | A kind of oil field injectability variation prediction method | |
| CN113090232B (en) | Method for improving recovery ratio of complex broken block high-saturation sandstone oil reservoir | |
| CN107288595A (en) | A kind of evaluation method of affusion utilizing ratio | |
| CN104806215A (en) | Identification method for dynamic association degree of chemical flooding injection production wells | |
| CN108457631A (en) | A kind of dispensing well classification test allotment design method | |
| CN106227995A (en) | Shale gas reservoir single well productivity computational methods | |
| CN113971528A (en) | Method for identifying dominant seepage channel | |
| CN112943160A (en) | Evaluation method for chemical water plugging effect of oil well | |
| CN115341885B (en) | Method and device for determining volume of steam flooding channeling channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |