CN113137218A - Method and device for determining fire flooding front edge position of fire flooding gas injection well - Google Patents
Method and device for determining fire flooding front edge position of fire flooding gas injection well Download PDFInfo
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- 239000007924 injection Substances 0.000 title claims abstract description 271
- 238000000034 method Methods 0.000 title claims abstract description 57
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 106
- 238000004590 computer program Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 214
- 238000002485 combustion reaction Methods 0.000 description 20
- 239000003921 oil Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 239000010779 crude oil Substances 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
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- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 238000012935 Averaging Methods 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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- E21B—EARTH OR ROCK 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention provides a method and a device for determining the fire flooding front edge position of a fire flooding gas injection well, wherein the method comprises the following steps: establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well; and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front. The invention can accurately, simply and conveniently determine the fire flooding front edge position of the fire flooding well group, further timely and reasonably adjust the gas injection strength at different stages and adopt corresponding control measures, thereby realizing uniform and stable forward propulsion of a fire line and achieving the optimal fire flooding effect.
Description
Technical Field
The invention relates to the technical field of development of petroleum and natural gas, in particular to the technical field of thickened oil exploitation, and specifically relates to a method and a device for determining a fireflood front edge position of a fireflood gas injection well.
Background
Fire flooding exploitation is used as a replacing technology for thick oil steam injection exploitation, has higher thermal efficiency, is suitable for wider oil reservoir conditions, and can play a role in modifying crude oil. The fire flooding oil production technology needs to have an injection well and a production well at the same time, and the injection well and the production well are combined according to a certain proportion and an arrangement mode. The process is that firstly, the injection well injects combustion-supporting gas such as air or oxygen, and simultaneously ensures that the oil layer has enough relative permeability to the injection well, so as to provide oxygen required by combustion for the oil layer and discharge waste gas generated in the combustion process, then the combustion-supporting gas is ignited underground, and the gas injection is continued to maintain the combustion of the oil layer, so that a narrow high-temperature combustion zone is formed in the oil layer, and the combustion zone is continuously combusted along with the supply of the injected oxygen and is pushed to the production well by the injection well, and the reference figure 1 shows that the combustion zone is continuously combusted.
Crude oil is distilled and cracked under the action of high temperature, wherein lighter oil flows along an oil layer to a production well under the action of steam, and is condensed due to heat exchange when encountering rocks and fluid of the oil layer with lower temperature relative to the crude oil, heavy hydrocarbon components remained due to distillation and cracking in the combustion process are used as fuel to provide energy for maintaining combustion, exhaust gas generated after combustion is pushed forward under the pressure of a gas injection well, the rocks and the fluid of the oil layer are heated in the pushing process, and the crude oil is well displaced. Meanwhile, the water in the combustion products and the water vapor in the oil layer evaporated due to high temperature can be condensed in the propulsion process to form a hot water zone with crude oil displacement, and the effect of hot water displacement is achieved, and the hot water zone is shown in fig. 2.
The fire wire can generate local miscible phases among other components such as gas-phase hydrocarbons, condensate oil, water vapor and the like generated in the combustion propulsion process, and the miscible-phase flooding effect is achieved for the displacement of crude oil. Therefore, in order to maintain the normal combustion of the combustion front, fuel, temperature and oxygen for maintaining combustion are required in the oil layer, and the position of a firing line is continuously pushed towards the direction of a production well under certain gas injection pressure, so that a larger swept range is realized.
Accurate definition of in situ combustion front location is important to determine and select reasonable development parameters and to adjust operating parameters in real time during in situ combustion. In the process of developing thick oil and extra thick oil by adopting an in-situ combustion method, the propulsion speed of a live wire, the position of the live wire, the physicochemical reaction in a stratum caused by combustion, the development dynamics of a well and the like are main controlled parameters in the in-situ combustion process, and the gas injection strength in different stages can be timely and reasonably adjusted and corresponding control measures can be taken only according to the grasped radial distance of the propulsion of the front edge of the live wire, so that the live wire can be uniformly and stably propelled forwards, and the optimal fire flooding effect can be achieved. The conventional method is obtained by reasonably arranging monitoring wells between a production well and a gas injection well and analyzing according to the thermodynamic rule of the monitoring wells. The method has the disadvantages of complicated calculation, long operation time, numerous required parameters and no contribution to field application.
Disclosure of Invention
Aiming at the problems in the prior art, the method and the device for determining the fire flooding front edge position of the fire flooding gas injection well can accurately, simply and conveniently determine the fire flooding front edge position of the fire flooding well group.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the present invention provides a method of determining a fireflood front location for a fireflood gas injection well, comprising:
establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well;
and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front.
In one embodiment, the establishing a relationship between the gas injection amount and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection amounts of the fireflood gas injection well includes:
measuring gas injection pressures corresponding to different gas injection quantities to establish a relational expression between the gas injection quantities and the gas injection pressures;
measuring formation pressures corresponding to different gas injection pressures;
and establishing a relation between the gas injection quantity and the formation pressure according to the relation between the gas injection quantity and the gas injection pressure and the formation pressure.
In one embodiment, the feed radius is the fireflood front location when the production well reaches a steady state production.
In one embodiment, the formation pressure supplies a boundary pressure for the production well.
In a second aspect, the present invention provides a fireflood front apparatus for identifying a fireflood gas injection well, the apparatus comprising:
the relational expression establishing unit is used for establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well;
and the front edge position determining unit is used for determining the supply radius of the production well according to a relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the fire flooding front edge position.
In one embodiment, the relational expression establishing unit includes:
the gas injection pressure measuring module is used for measuring gas injection pressures corresponding to different gas injection quantities so as to establish a relational expression between the gas injection quantities and the gas injection pressures;
the formation pressure measuring module is used for measuring formation pressures corresponding to different gas injection pressures;
and the relational expression establishing module is used for establishing a relational expression between the gas injection quantity and the formation pressure according to the relational expression between the gas injection quantity and the gas injection pressure and the formation pressure.
In one embodiment, the feed radius is the fireflood front location when the production well reaches a steady state production.
In one embodiment, the formation pressure supplies a boundary pressure for the production well.
In a third aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor when executing the program performing the steps of the method for determining a fire front location for a fire flooding gas injection well.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of determining a fireflood front location for a fireflood gas injection well.
From the above description, the method and the device for determining the fire flooding front position of the fire flooding gas injection well provided by the invention determine the dynamic formation pressure of the gas injection well by monitoring the gas injection quantity and the gas injection pressure of the fire flooding gas injection well, calculate the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, use the fire flooding front position as the fire flooding production well supply boundary, use the average formation pressure of the gas injection well as the fire flooding production well supply boundary pressure, monitor the production flow pressure and the yield data of the fire flooding production well, and calculate the fire flooding production well supply boundary, so that the fire flooding front positions of the fire flooding well group can be accurately and simply determined, and further the gas injection strength at different stages can be timely and reasonably adjusted, and the uniform and stable forward propulsion of a fire line can be realized, and the optimal fire flooding effect can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram I of the gas injection fireflood heavy oil recovery principle in an embodiment of the invention;
FIG. 2 is a schematic diagram of a gas injection fireflood heavy oil recovery principle in an embodiment of the invention;
FIG. 3 is a schematic flow chart of a method of determining the location of a fireflood front of a fireflood gas injection well in an embodiment of the present disclosure;
FIG. 4 is a flow chart illustrating step 100 according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a fireflood gas injection well according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view of a fireflood production well according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart of a method for determining the location of the fireflood front of a fireflood gas injection well in an example embodiment of the present invention;
FIG. 8 is a schematic diagram of a fireflood front apparatus for identifying fireflood gas injection wells, in an embodiment of the invention;
FIG. 9 is a schematic diagram of a relational expression building unit according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electronic device in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
An embodiment of the present invention provides a specific implementation of a method for determining the location of a fireflood front of a fireflood gas injection well, which specifically includes the following steps, with reference to fig. 3:
step 100: and establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well.
Specifically, in the gas injection process of the fireflood well group gas injection well, due to the influence and interference of gas injection amount, gas injection time, oxygen combustion amount, fireflood front position propulsion, and production conditions of adjacent well production wells, the formation pressure and gas injection pressure of the gas injection well are real-time changing values, and by changing different injection amounts of a well mouth and keeping stable, and measuring gas injection pressure data corresponding to different gas injection amounts, a relational expression of the formation pressure of the gas injection well changing along with the gas injection amount can be established, so that the formation pressure changing along with the gas injection amount is obtained.
Step 200: and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front.
It can be understood that the fireflood front edge position of the fireflood gas injection well can be regarded as a constant-pressure supply boundary of a fireflood production well, the supply boundary pressure is formation pressure, when the production well is produced with stable yield and reaches stable flow, the supply boundary pressure and the production well flow pressure meet a certain relation, and the supply radius of the production well can be regarded as the position of the fireflood front edge.
From the above description, the method for determining the fire flooding front position of the fire flooding gas injection well provided by the invention determines the dynamic formation pressure of the gas injection well by monitoring the gas injection amount and the gas injection pressure of the fire flooding gas injection well, calculates the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, uses the fire flooding front position as the fire flooding production well supply boundary, uses the average formation pressure of the gas injection well as the fire flooding production well supply boundary pressure, monitors the production flow pressure and the yield data of the fire flooding production well, and calculates the fire flooding production well supply boundary, so that the fire flooding front positions of the fire flooding well group can be accurately and simply determined, the gas injection intensity at different stages can be timely and reasonably adjusted, corresponding control measures can be taken, and the uniform and stable forward propulsion of a fire line can be realized, and the optimal fire flooding effect can be achieved.
In one embodiment, referring to fig. 4, step 100 specifically includes:
step 101: gas injection pressures corresponding to different gas injection quantities are measured to establish a relationship between the gas injection quantity and the gas injection pressure.
Step 102: and measuring formation pressures corresponding to different gas injection pressures.
Step 103: and establishing a relation between the gas injection quantity and the formation pressure according to the relation between the gas injection quantity and the gas injection pressure and the formation pressure.
In steps 101 to 103, gas injection pressure data corresponding to different gas injection quantities are measured, and a relational expression of the formation pressure of the gas injection well along with the change of the gas injection quantity can be established according to a binomial productivity equation, so that the formation pressure along with the change of the gas injection quantity is obtained.
In one embodiment, the feed radius is the fireflood front location when the production well reaches a steady state production.
In one embodiment, the formation pressure supplies a boundary pressure for the production well.
Referring to fig. 5 and fig. 6, it can be understood that, for the mining mode of the fireflood gas injection well, the fireflood front position of the fireflood gas injection well can be regarded as a constant-pressure supply boundary of a fireflood production well, at this time, the supply boundary pressure can be regarded as formation pressure, and the supply radius of the production well can be regarded as the position of the fireflood front.
From the above description, the method for determining the fire flooding front position of the fire flooding gas injection well provided by the invention determines the dynamic formation pressure of the gas injection well by monitoring the gas injection amount and the gas injection pressure of the fire flooding gas injection well, calculates the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, uses the fire flooding front position as the fire flooding production well supply boundary, uses the average formation pressure of the gas injection well as the fire flooding production well supply boundary pressure, monitors the production flow pressure and the yield data of the fire flooding production well, and calculates the fire flooding production well supply boundary, so that the fire flooding front positions of the fire flooding well group can be accurately and simply determined, the gas injection intensity at different stages can be timely and reasonably adjusted, corresponding control measures can be taken, and the uniform and stable forward propulsion of a fire line can be realized, and the optimal fire flooding effect can be achieved.
To further illustrate the present solution, the present invention provides a specific application example of the method for determining the location of the fireflood front of a fireflood gas injection well, taking an LH oilfield H block as an example, and the specific application example specifically includes the following contents, and refer to fig. 7.
In this specific application example, the following conditions are assumed:
the gas injection layer of the gas injection well and the production layer of the production well are uniform in thickness; the components of crude oil in the stratum are balanced; the heavy hydrocarbon component in the crude oil is fully combusted; the fire lines around the gas injection well are evenly pushed;
the meaning of the symbol:
Pwf injection-gas injection pressure of gas injection well, MPa
qg- - -gas injection amount of gas injection well, m3/d
PiGas injection well formation pressure, MPa
L- -fire front (length unit), m
Pwf productionBottom hole flow pressure of the production well, MPa
qProduction ofProduction well yield, m3/d
K- -permeability of producing well pay zone, mD
H- -production well production zone thickness, m
B- -crude oil volume coefficient, dimensionless
reProduction well feed radius, m
rwWell diameter of the production well, m
S- -skin factor of producing well, no dimension
S1: and determining the formation pressure of the fireflood gas injection well.
In the gas injection process of the fireflood well group gas injection well, due to the influence and interference of gas injection amount, gas injection time, oxygen combustion amount, fireflood front edge position propulsion and production conditions of production wells of adjacent wells, the formation pressure and the gas injection pressure of the gas injection well are real-time changing values, and different injection amounts q of a well mouth are changedgi(i is more than or equal to 4), and the gas injection pressure data p corresponding to different gas injection quantities is measured while the gas injection pressure data is kept stablewf injection iGas injection well formation pressure p may be establishediVariation of q with the amount of gas injectedgiThereby obtaining the gas injection quantity qgiVarying formation pressure pi。
Injection quantity q of gas injection wellgiWith formation pressure piThe relational equation can be expressed as a binomial equation of formulas (1) and (2):
p2 wf injection i-p2 i＝Aqgi+Bq2 gi (1)
p2 wf injection i-1-p2 i-1＝Aqgi-1+Bq2 gi-1 (2)
It will be appreciated that during the test period, the formation pressure p of the reservoiriWith little change, i.e. Pi≈Pi-1Each test point data satisfies the above equation. And (2) the productivity equation of each test point is collated, and the formula (2) is the formula (1), and the productivity equation can be obtained through conversion:
as can be seen from the formula (3),
and (q)gi+qgi-1) The relation between the injection quantity of the well gas injection well and the formation pressure can be obtained by substituting A, B values into the formula (1) and transforming the relation to obtain the formation pressure piSee formula (4).
Substituting the stable injection amount and injection pressure obtained by multiple tests into the formula to obtain multiple formation pressures piValue of p is more than oneiAveraging to obtain the formation pressure p of the gas injection well in the test periodiAverage value of (2)
(n≥4)。
S2: the location of the fire front is determined.
The fire flooding front edge position of the fire flooding gas injection well can be regarded as a constant-pressure supply boundary r of a fire flooding production wellwThe supply boundary pressure is the formation pressure
The boundary pressure is supplied when the production well is producing at a steady production rate, when a steady flow is reached
With production well flow pressure Pwf productionSatisfies the following relationship, see formula (5):
converting the formula 5 to obtain the supply radius r of the production welleNamely:
in the above equation, the production well feed radius reI.e. the position that can be considered as the fireflood front.
From the above description, the method for determining the fire flooding front position of the fire flooding gas injection well provided by the invention determines the dynamic formation pressure of the gas injection well by monitoring the gas injection amount and the gas injection pressure of the fire flooding gas injection well, calculates the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, uses the fire flooding front position as the fire flooding production well supply boundary, uses the average formation pressure of the gas injection well as the fire flooding production well supply boundary pressure, monitors the production flow pressure and the yield data of the fire flooding production well, and calculates the fire flooding production well supply boundary, so that the fire flooding front positions of the fire flooding well group can be accurately and simply determined, the gas injection intensity at different stages can be timely and reasonably adjusted, corresponding control measures can be taken, and the uniform and stable forward propulsion of a fire line can be realized, and the optimal fire flooding effect can be achieved.
Based on the same inventive concept, the embodiment of the present application further provides a fireflood front device for determining a fireflood gas injection well, which can be used for implementing the method described in the above embodiment, as described in the following embodiment. Because the principle of determining the solution of the fireflood front edge device of the fireflood gas injection well is similar to the method for determining the position of the fireflood front edge of the fireflood gas injection well, the implementation of the fireflood front edge device for determining the fireflood gas injection well can be implemented by referring to the method for determining the position of the fireflood front edge of the fireflood gas injection well, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
The embodiment of the invention provides a specific implementation manner of a fireflood leading edge device for determining a fireflood gas injection well, which can realize the method for determining the position of the fireflood leading edge of the fireflood gas injection well, and referring to fig. 8, the method for determining the fireflood leading edge device for the fireflood gas injection well specifically comprises the following steps:
the relational expression establishing unit 10 is configured to establish a relational expression between the gas injection amount and the formation pressure according to the formation pressures of the plurality of gas injection wells corresponding to the plurality of gas injection amounts of the fireflood gas injection well;
and a leading edge position determining unit 20, configured to determine a supply radius of the production well according to a relation between the gas injection amount and the formation pressure, a yield of the production well corresponding to the gas injection well, and a flowing pressure, so as to determine the location of the fireflood leading edge.
In an embodiment, referring to fig. 9, the relation establishing unit 10 includes:
the gas injection pressure measuring module 101 is used for measuring gas injection pressures corresponding to different gas injection quantities so as to establish a relational expression between the gas injection quantities and the gas injection pressures;
the formation pressure measuring module 102 is used for measuring formation pressures corresponding to different gas injection pressures;
a relational expression establishing module 103, configured to establish a relational expression between the gas injection amount and the formation pressure according to the relational expression between the gas injection amount and the gas injection pressure and the formation pressure.
In one embodiment, the feed radius is the fireflood front location when the production well reaches a steady state production.
In one embodiment, the formation pressure supplies a boundary pressure for the production well.
From the above description, the fireflood front edge device for determining the fireflood gas injection well provided by the invention determines the dynamic formation pressure of the gas injection well by monitoring the gas injection quantity and the gas injection pressure of the fireflood gas injection well, calculates the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, uses the fireflood front edge position as the supply boundary of the fireflood production well, uses the average formation pressure of the gas injection well as the supply boundary pressure of the fireflood production well, monitors the production flow pressure and the yield data of the fireflood production well, and calculates the supply boundary of the fireflood production well, so that the fireflood front edge positions of the fireflood well group can be accurately and simply determined, the gas injection intensity at different stages can be timely and reasonably adjusted, corresponding control measures can be taken, and uniform and stable forward propulsion of a fire line can be realized, and the optimal fireflood effect can be achieved.
Embodiments of the present application further provide an implementation of an electronic device capable of implementing all steps of the method for determining a fireflood front position of a fireflood gas injection well in the foregoing embodiments, and referring to fig. 10, the electronic device specifically includes the following contents:
a processor (processor)1201, a memory (memory)1202, a communication Interface 1203, and a bus 1204;
the processor 1201, the memory 1202 and the communication interface 1203 complete communication with each other through the bus 1204; the communication interface 1203 is configured to implement information transmission between related devices, such as a server-side device, a monitoring device, and a client device.
The processor 1201 is configured to invoke a computer program in the memory 1202, the processor when executing the computer program performs all of the steps in the method of determining a fire front location for a fire flooding gas injection well in the embodiments described above, for example, the processor when executing the computer program performs the steps of:
step 100: and establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well.
Step 200: and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front.
From the above description, it can be known that, in the electronic device in the embodiment of the present application, dynamic formation pressure of the gas injection well is determined by monitoring gas injection amount and gas injection pressure of the fireflood gas injection well, an average value of the dynamic formation pressure of the gas injection well is obtained and used as the average formation pressure of the gas injection well, the fireflood front edge position is used as a fireflood production well supply boundary, the average formation pressure of the gas injection well is used as the fireflood production well supply boundary pressure, production flowing pressure and yield data of the fireflood production well are monitored, and the fireflood production well supply boundary is calculated, so that the fireflood front edge positions of the fireflood well group can be accurately, simply and conveniently determined, gas injection intensities at different stages can be timely and reasonably adjusted, corresponding control measures are taken, uniform and stable forward propulsion of a.
Embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps in the method for determining a fire front position of a fire flooding gas injection well in the above embodiments, where the computer-readable storage medium stores thereon a computer program, and the computer program, when executed by a processor, implements all the steps in the method for determining a fire front position of a fire flooding gas injection well in the above embodiments, for example, the processor implements the following steps when executing the computer program:
step 100: and establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well.
Step 200: and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front.
From the above description, it can be seen that the computer-readable storage medium in the embodiment of the present application determines the dynamic formation pressure of the gas injection well by monitoring the gas injection amount and the gas injection pressure of the fireflood gas injection well, calculates the average value of the dynamic formation pressure of the gas injection well as the average formation pressure of the gas injection well, uses the fireflood front position as the fireflood production well supply boundary, uses the average formation pressure of the gas injection well as the fireflood production well supply boundary pressure, monitors the production flow pressure and the yield data of the fireflood production well, and calculates the fireflood production well supply boundary, so that the fireflood front positions of the fireflood well group can be accurately, simply and conveniently determined, and further gas injection intensities at different stages can be timely and reasonably adjusted and corresponding control measures can be taken to achieve uniform and stable forward propulsion of a live wire, so as to achieve the optimal fireflood effect.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Although the present application provides method steps as described in an embodiment or flowchart, additional or fewer steps may be included based on conventional or non-inventive efforts. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or client product executes, it may execute sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures.
Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method of determining a fireflood front location for a fireflood gas injection well, comprising:
establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well;
and determining the supply radius of the production well according to the relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the position of the fire flooding front.
2. The method for locating a fireflood front according to claim 1, wherein the establishing a relationship between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection wells comprises:
measuring gas injection pressures corresponding to different gas injection quantities to establish a relational expression between the gas injection quantities and the gas injection pressures;
measuring formation pressures corresponding to different gas injection pressures;
and establishing a relation between the gas injection quantity and the formation pressure according to the relation between the gas injection quantity and the gas injection pressure and the formation pressure.
3. The method of claim 1, wherein the feed radius is the fireflood front location when the production well reaches a steady state production.
4. The fireflood front location method of claim 1, wherein the formation pressure supplies a boundary pressure for the production well.
5. A fireflood leading edge location device for determining a fireflood gas injection well, comprising:
the relational expression establishing unit is used for establishing a relational expression between the gas injection quantity and the formation pressure according to the formation pressure of a plurality of gas injection wells corresponding to a plurality of gas injection quantities of the fireflood gas injection well;
and the front edge position determining unit is used for determining the supply radius of the production well according to a relational expression between the gas injection quantity and the formation pressure, the yield of the production well corresponding to the gas injection well and the flowing pressure so as to determine the fire flooding front edge position.
6. A fireflood leading edge position device according to claim 5, wherein the relationship establishing unit comprises:
the gas injection pressure measuring module is used for measuring gas injection pressures corresponding to different gas injection quantities so as to establish a relational expression between the gas injection quantities and the gas injection pressures;
the formation pressure measuring module is used for measuring formation pressures corresponding to different gas injection pressures;
and the relational expression establishing module is used for establishing a relational expression between the gas injection quantity and the formation pressure according to the relational expression between the gas injection quantity and the gas injection pressure and the formation pressure.
7. A fireflood front location device according to claim 5, wherein the feed radius is the fireflood front location when the production well reaches a steady state production.
8. A fireflood front position device according to claim 5, wherein the formation pressure supplies a boundary pressure for the production well.
9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method of determining a fire front location for a fire flood gas injection well of any of claims 1 to 4.
10. A computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of the method of determining a fireflood front location of a fireflood gas injection well of any of claims 1 to 4.
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