CN117217393B - System for detecting and correcting oil-gas well yield through dialysis capacity expansion - Google Patents
System for detecting and correcting oil-gas well yield through dialysis capacity expansion Download PDFInfo
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- 238000000502 dialysis Methods 0.000 title claims abstract description 12
- 238000012937 correction Methods 0.000 claims abstract description 6
- 239000010779 crude oil Substances 0.000 claims description 134
- 239000003129 oil well Substances 0.000 claims description 109
- 238000000605 extraction Methods 0.000 claims description 77
- 238000004519 manufacturing process Methods 0.000 claims description 54
- 230000006872 improvement Effects 0.000 claims description 53
- 230000035699 permeability Effects 0.000 claims description 47
- 230000000694 effects Effects 0.000 claims description 36
- 230000001965 increasing effect Effects 0.000 claims description 34
- 230000008901 benefit Effects 0.000 claims description 31
- 238000005065 mining Methods 0.000 claims description 26
- 230000009467 reduction Effects 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 238000011156 evaluation Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 9
- 230000000704 physical effect Effects 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
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- 210000003128 head Anatomy 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000002354 daily effect Effects 0.000 description 10
- 230000000638 stimulation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 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
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Abstract
The invention discloses a detection and correction system for improving the yield of an oil and gas well through dialysis capacity expansion, and particularly relates to the technical field of oil and gas yield prediction.
Description
Technical Field
The invention relates to the technical field of oil and gas yield prediction, in particular to a detection and correction system for improving oil and gas well yield through dialysis capacity expansion.
Background
Along with continuous proceeding of oil and gas well exploitation, pollution often occurs in underground oil and gas reserves, oil and gas exploitation difficulty is higher and higher, and exploitation schemes need to be adjusted in time when errors occur between actual output and expected output, so that oil and gas exploitation is performed to the greatest extent.
The existing oil and gas well yield detection and correction system acquires crude oil yield data and accumulated yield data extracted every day, calculates the ratio of the accumulated yield to the daily yield, draws a material time balance curve by taking the calculated ratio of the accumulated yield to the daily yield as an abscissa and the daily yield as an ordinate, predicts the decreasing trend and the extraction period of the extracted yield of the oil and gas well based on the material time balance curve, and improves the dynamic prediction precision of the production.
However, the above system still has some problems: along with the progress of oil gas exploitation work, the pollution degree of underground oil gas reservoirs is also heavier, the actual yield often has larger errors with the expected yield, at the moment, the decrease of daily yield cannot be determined because of the extraction difficulty caused by the fact that the oil gas reserves are not more or the pollution degree is too heavy, and whether the yield is ensured by adopting yield increasing measures or not is required to be judged according to the numerical difference between the actual exploitation condition and the theoretical expected exploitation condition.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a system for improving the production of oil and gas wells by dialysis and expansion, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a system for enhanced oil and gas well production detection and correction by dialysis expansion, comprising:
crude oil extraction area dividing module: the crude oil extraction area is marked as a target area, the target area is divided into a plurality of target subareas according to the ground extraction area, the number of each target subarea is marked as i, and the values of i are 1, 2.
The crude oil extraction area data acquisition module comprises: carrying out geological survey on the crude oil extraction area to obtain geological parameter information, reservoir crude oil physical parameters and stratum pressure data, and recording the geological parameter information, the reservoir crude oil physical parameters and the stratum pressure data;
the crude oil exploitation setting module: determining the type of oil well, parameters, theoretical production pressure differences and theoretical average permeability of the reservoir based on the recorded crude oil production zone data;
oil well yield prediction module: predicting the yield of the oil well before each crude oil extraction based on the set crude oil extraction related information, the related information in the drilling, cementing and completion processes of the oil well and the previous crude oil extraction condition;
an oil well exploitation monitoring module: monitoring the whole exploitation process of the oil well, and recording actual production pressure difference, yield, stratum thickness, crude oil volume coefficient, crude oil viscosity, supply radius, shaft radius and radius of polluted or damaged reservoir in the zone near the bottom of the well;
yield-increasing demand judging module: comparing the daily actual yield of the oil well with the expected minimum yield of the oil well, and judging whether a yield increasing measure needs to be adopted;
yield effect evaluation module: processing data of the last crude oil exploitation before the yield increase and data of the first crude oil exploitation after the yield increase measures are taken, and comparing the processed data to judge whether the yield increase effect reaches the standard or not;
the comprehensive benefit improvement index calculation module: calculating a comprehensive benefit improvement index based on the received damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficient, and sending a calculation result to a yield-increasing scheme adjustment module;
the yield-increasing scheme adjusting module: when receiving the judging result that the yield increasing measures are not up to standard or the invalid data of the comprehensive benefit increasing index, adjusting the current yield increasing scheme, and when receiving the valid data of the comprehensive benefit increasing index, continuing to execute the current yield increasing scheme;
database: for storing data in all modules of the system.
Preferably, the crude oil exploitation region data acquisition module comprises a geological survey data recording unit, a reservoir crude oil physical property parameter acquisition unit, a stratum pressure data acquisition unit and a data output unit, wherein the geological survey data recording unit surveys rock surface volumes and absolute compact volumes of different underground depths of a target subarea; the reservoir crude oil physical property parameter acquisition unit acquires the viscosity, density and crude oil volume coefficient of crude oils with different reservoir thicknesses; the stratum pressure data acquisition unit acquires pressure data of different reservoir thicknesses in the target subarea; the data output unit sends the acquired data to the crude oil exploitation setting module.
Preferably, the crude oil extraction setting module comprises an oil well information determining unit, a theoretical production differential pressure calculating unit, a reservoir theoretical average permeability calculating unit and a data output unit, wherein the oil well information determining unit selects an oil well type and characteristic parameters thereof based on geological features of a target subarea; the theoretical production pressure difference is calculated by taking the horizontal plane of the ground of the target subarea as a reference plane and establishing an equation based on the horizontal plane of the conveying position and the liquid level of crude oil, wherein the specific equation is as follows:，/>、/>flow rate of the level of the crude oil and the level of the transport position, respectively,/->、/>Flow pressure and crude oil delivery position pressure during stable production of crude oil respectively, < >>For crude oil density->、/>The level of the crude oil level and the level of the delivery position are respectively +.>For adding effective pressure head->For head loss->，/>For friction coefficient>For average flow rate +.>Is a local resistance coefficient->For the total length of the crude oil conveying pipeline, < > and->For conveying pipe diameter, i.e. theoretical production pressure differenceThe method comprises the steps of carrying out a first treatment on the surface of the The reservoir theoretical average permeability calculation unit calculates the volume of the rock surface from the recorded different subsurface depths +.>And absolute dense volume->Calculating the porosity of the rock at the subsurface depth>The specific calculation formula is as follows: />Further calculate +.>The specific calculation formula is as follows: />，/>For the primary term coefficient->>0，/>To adjust the parameters, the permeability of the same underground depth in the target subarea is summarized and filtered to remove abnormal values, and then the theoretical average permeability of the reservoir is calculated>The specific calculation formula is as follows: />，/>For permeability at a certain subsurface depth in a single zone, < >>Permeability for a target subregion having the same subsurface depth number i; and the data output unit uploads the calculated data to a crude oil extraction control center.
Preferably, the oil well yield prediction module comprises an oil well perfection condition judgment unit, an oil well yield prediction unit, an oil well expected minimum yield setting unit and a data output unit, wherein the oil well perfection condition judgment unit judges whether an oil well has an imperfect condition or not through naked eyes; the oil well yield prediction unit judges the oil well yield when the oil well condition is perfect with naked eyesThe calculation formula is as follows: />，/>For the thickness of stratum>For the viscosity of crude oil->Is the volume coefficient of crude oil, ">For supplying radius, ++>Judging the oil well yield when the oil well condition is imperfect for the radius of the shaft and the naked eye>The calculation formula is as follows:，/>adding resistance coefficient to seepage>The specific calculation formula is as follows: />Wherein->、/>Average permeability of damaged and undamaged areas in target subregion, respectively,/>Radius of contaminated or damaged reservoir for the zone near the bottom of the well; the expected minimum oil well yield setting unit sets the expected minimum oil well yield based on the predicted oil well yield and actual requirements; the data output unit sends the expected minimum yield to the stimulation demand determination module.
Preferably, the yield-increasing demand judging module comprises an actual yield data recording unit, a data comparison unit, a yield-increasing demand judging unit and a judging result output unit, wherein the actual yield data recording unit records daily oil well yield data; the data comparison unit is used for comparing the actual yield data with the expected minimum yield of the oil well; the yield-increasing demand judging unit judges that no yield-increasing measures need to be taken when the actual yield is larger than or equal to the expected minimum yield of the oil well, and judges that the yield-increasing measures need to be taken when the actual yield is smaller than the expected minimum yield of the oil well; and the judging result output unit sends the judging result to the crude oil extraction control center.
Preferably, the yield-increasing effect evaluation module comprises a data processing unit before yield increasing, a data processing unit after yield increasing, a data comparison unit, a yield-increasing effect judging unit and a judging result output unit, wherein the specific evaluation process is as follows:
a data processing unit before yield increase: actual effective average permeability of last crude oil extraction before yield increaseThe specific calculation formula of (2) is as follows: />，/>For practical production of pressure difference>Calculating effective average permeability of virtually lossless zone for the specific gravity of crude oil on the ground>The specific formula of (2) is: />，/>For atmospheric pressure, the actual effective average permeability +.>And effective average permeability of the virtually intact zone +.>Substitution formulaCalculating the effective average permeability of the actually damaged area +.>Calculating the damage coefficient from the effective average permeability of the actually damaged area and the effective average permeability of the actually undamaged area>The specific calculation formula is as follows: />Calculating the crude oil extraction perfection from the theoretical production pressure difference and the actual production pressure difference>The specific calculation formula is as follows: />，/>For the actual production of pressure differences, the production from the well is +>And mining investment costs->Calculating mining cost performance->The specific calculation formula is as follows: />，/>For exponentially adjusting the parameter, the value is greater than 0, < >>Is a constant coefficient, and the numerical value is more than 0;
post-production data processing unit: calculating damage coefficient of first crude oil exploitation after addition by using the same calculation formulaPerfection of crude oil extraction>And cost performance of exploitation->；
Data comparison unit: comparing the data before and after the production increase, and respectively calculating damage reduction coefficientsExtraction perfection improvement factor->Cost performance improvement coefficient of mining->The specific calculation formula is as follows:、/>、/>，/>、/>、/>constant coefficients of the respective indices, +.>>0、/>>0、/>>0，/>For adjusting parameters +.>>0；
Yield increasing effect judging unit: if the value of the mining cost performance lifting coefficient is larger than 0, carrying out numerical judgment on the damage reduction coefficient and the mining perfection lifting coefficient, if both are smaller than 0, judging that the yield effect is not up to standard, if both are larger than 0, judging that the yield effect is up to standard, and if one positive and one negative are generated, marking as the yield effect to be calculated, and if the value of the mining cost performance lifting coefficient is smaller than or equal to 0, directly judging that the yield effect is not up to standard;
and a judgment result output unit: and sending the damage reduction coefficient, the mining perfection improvement coefficient and the mining cost performance improvement coefficient which reach the standard or are marked as damage reduction coefficient, mining cost performance improvement coefficient to be calculated for the yield increase effect to a comprehensive benefit improvement index calculation module, and sending the judging result of the yield increase measure which does not reach the standard to a yield increase scheme adjustment module.
Preferably, the comprehensive benefit improvement index calculation module calculates the comprehensive benefit improvement index based on the received damage reduction coefficient, the mining perfection improvement coefficient and the mining cost performance improvement coefficientThe specific calculation formula of (2) is as follows:wherein->、/>For exponentially adjusting parameters, ++>、/>Are all odd numbers and are filled with->、/>To impair the scaling factor of the reduction factor and the extraction perfection improvement factor, +.>>0、/>>0。
The invention has the technical effects and advantages that:
according to the invention, an oil well yield prediction module is arranged, oil well yield is predicted before each crude oil extraction based on set crude oil extraction related information, related information in the drilling, cementing and completion processes of an oil well and the previous crude oil extraction condition, oil well extraction monitoring module is arranged to monitor oil well yield overall process data, a yield increase demand judging module is arranged to compare daily actual yield of the oil well with expected minimum yield of the oil well, whether a yield increase measure needs to be adopted or not is judged, a yield increase effect evaluation module is arranged to compare the crude oil extraction related data before and after the yield increase measure is adopted to finally obtain damage reduction coefficient, extraction perfection improvement coefficient and extraction cost performance improvement coefficient, whether the obtained data reach the standard or not is judged, a comprehensive benefit improvement index calculation module is arranged to calculate a comprehensive benefit improvement index, a yield increase scheme is arranged to be adjusted when a judging result of the yield increase measure is not reached or a comprehensive benefit improvement index invalid data is received, the current yield increase scheme is continuously executed when the effective data of the comprehensive benefit improvement index is received, the connection function of the module improves the matching degree of the actual yield and theoretical yield of the oil well, interference of the oil and gas well yield attenuation other factors is reduced, and the oil and gas well yield is predicted accurately and cycle is predicted on the basis.
Drawings
Fig. 1 is a block diagram of a system architecture of the present invention.
FIG. 2 is a flow chart of the system operation of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment as shown in fig. 1 provides a system for detecting and correcting the oil and gas well yield by dialysis capacity expansion, which comprises a crude oil extraction area dividing module, a crude oil extraction area data acquisition module, a crude oil extraction setting module, an oil well yield prediction module, an oil well extraction monitoring module, a yield increase requirement judging module, a yield increase effect evaluation module, a comprehensive benefit increase index calculation module, a yield increase scheme adjustment module and a database, wherein the crude oil extraction area dividing module, the crude oil extraction area data acquisition module, the crude oil extraction setting module and the oil well yield prediction module are sequentially connected, the oil well yield prediction module, the oil well extraction monitoring module are connected with the yield increase requirement judging module, the yield increase requirement judging module is connected with the yield increase effect evaluation module, the yield increase effect evaluation module is connected with the comprehensive benefit increase index calculation module and the yield increase scheme adjustment module, and all modules in the system are connected with the database.
The crude oil extraction area dividing module marks the crude oil extraction area as a target area, the target area is divided into a plurality of target subareas according to the ground extraction area, the number of each target subarea is marked as i, and the values of i are 1, 2.
In this embodiment, the crude oil extraction area dividing module may include a dividing condition selecting unit, an area dividing unit, an oil well arranging unit, and an oil well numbering unit, where the dividing condition selecting unit selects a ground extraction area as an area dividing condition; the region dividing unit equally divides the target region into a plurality of target subregions based on the ground mining area; the oil well arrangement unit is used for arranging an oil well in each target subarea to carry out subsequent crude oil exploitation work; the oil well numbering unit is used for numbering the oil wells in the target subarea, and the oil well numbering unit is the same as the target subarea numbering.
And the crude oil extraction area data acquisition module carries out geological survey on the crude oil extraction area to acquire geological parameter information, reservoir crude oil physical parameters and stratum pressure data and records the geological parameter information, the reservoir crude oil physical parameters and the stratum pressure data.
Further, the crude oil exploitation region data acquisition module comprises a geological survey data recording unit, a reservoir crude oil physical property parameter acquisition unit, a stratum pressure data acquisition unit and a data output unit, wherein the geological survey data recording unit surveys rock surface volumes and absolute compact volumes of different underground depths of a target subarea; the reservoir crude oil physical property parameter acquisition unit acquires the viscosity, density and crude oil volume coefficient of crude oils with different reservoir thicknesses; the stratum pressure data acquisition unit acquires pressure data of different reservoir thicknesses in the target subarea; the data output unit sends the acquired data to the crude oil exploitation setting module.
The crude oil extraction setting module determines the type of well used, parameters, theoretical production pressure differentials, and theoretical average permeability of the reservoir based on the recorded crude oil extraction zone data.
Further, the crude oil production setting module comprises an oil well information determining unit, a theoretical production pressure difference calculating unit, a reservoir theoretical average permeability calculating unit and a data output unit, wherein the oil well information determining unit selects based on geological characteristics of a target subareaThe type of well and its characteristic parameters; the theoretical production pressure difference is calculated by taking the horizontal plane of the ground of the target subarea as a reference plane and establishing an equation based on the horizontal plane of the conveying position and the liquid level of crude oil, wherein the specific equation is as follows:，/>、/>flow rate of the level of the crude oil and the level of the transport position, respectively,/->、/>Flow pressure and crude oil delivery position pressure during stable production of crude oil respectively, < >>For crude oil density->、/>The level of the crude oil level and the level of the delivery position are respectively +.>For adding effective pressure head->For head loss->，/>For friction coefficient>For average flow rate +.>Is a local resistance coefficient->For the total length of the crude oil conveying pipeline, < > and->For conveying pipe diameter, i.e. theoretical production pressure differenceThe method comprises the steps of carrying out a first treatment on the surface of the The reservoir theoretical average permeability calculation unit calculates the volume of the rock surface from the recorded different subsurface depths +.>And absolute dense volume->Calculating the porosity of the rock at the subsurface depth>The specific calculation formula is as follows: />Further calculate +.>The specific calculation formula is as follows: />，/>For the primary term coefficient->>0，/>To adjust the parameters, the permeability of the same underground depth in the target subarea is adjustedCalculating the theoretical average permeability of the reservoir after the abnormal values are removed by summarizing>The specific calculation formula is as follows: />，k a For permeability, k, at a certain subsurface depth within a single zone ai Permeability for a target subregion having the same subsurface depth number i; and the data output unit uploads the calculated data to a crude oil extraction control center.
The oil well yield prediction module predicts the yield of the oil well before each crude oil extraction based on the set crude oil extraction related information, the related information in the drilling and well cementation processes of the oil well and the well completion process and the previous crude oil extraction condition.
Further, the oil well yield prediction module comprises an oil well perfection condition judgment unit, an oil well yield prediction unit, an oil well expected minimum yield setting unit and a data output unit, wherein the oil well perfection condition judgment unit judges whether an oil well has an imperfect condition or not through naked eyes; the oil well yield prediction unit judges the oil well yield when the oil well condition is perfect with naked eyesThe calculation formula is as follows: />，/>For the thickness of stratum>For the viscosity of crude oil->Is the volume coefficient of crude oil, ">For supplying radius, ++>Judging the oil well yield when the oil well condition is imperfect for the radius of the shaft and the naked eye>The calculation formula is as follows: />，/>Adding resistance coefficient to seepage>The specific calculation formula is as follows: />Wherein->、/>Average permeability of damaged and undamaged areas in target subregion, respectively,/>Radius of contaminated or damaged reservoir for the zone near the bottom of the well; the expected minimum oil well yield setting unit sets the expected minimum oil well yield based on the predicted oil well yield and actual requirements; the data output unit sends the expected minimum yield to the stimulation demand determination module.
In this example, it is specifically noted that the average permeability of the formation when crude oil production is predicted under imperfect conditions is the actual effective average permeability of the last crude oil production.
The oil well exploitation monitoring module monitors the whole exploitation process of the oil well, and records actual production pressure difference, yield, stratum thickness, crude oil volume coefficient, crude oil viscosity, supply radius, shaft radius and radius of polluted or damaged reservoir in the zone near the bottom of the well.
The stimulation demand determination module compares the actual daily production of the well with the expected minimum production of the well to determine whether stimulation is needed.
Further, the yield-increasing demand judging module comprises an actual yield data recording unit, a data comparison unit, a yield-increasing demand judging unit and a judging result output unit, wherein the actual yield data recording unit records daily oil well yield data; the data comparison unit is used for comparing the actual yield data with the expected minimum yield of the oil well; the yield-increasing demand judging unit judges that no yield-increasing measures need to be taken when the actual yield is larger than or equal to the expected minimum yield of the oil well, and judges that the yield-increasing measures need to be taken when the actual yield is smaller than the expected minimum yield of the oil well; and the judging result output unit sends the judging result to the crude oil extraction control center.
The yield-increasing effect evaluation module processes the data of the last crude oil extraction before yield increase and the data of the first crude oil extraction after yield-increasing measures are taken, and compares the processed data to judge whether the yield-increasing effect reaches the standard.
Further, the yield-increasing effect evaluation module comprises a data processing unit before yield increasing, a data processing unit after yield increasing, a data comparison unit, a yield-increasing effect judgment unit and a judgment result output unit, and the specific evaluation process is as follows:
a data processing unit before yield increase: actual effective average permeability of last crude oil extraction before yield increaseThe specific calculation formula of (2) is as follows: />，/>For practical production of pressure difference>For the specific gravity of crude oil on groundCalculating effective average permeability of the actual lossless region +.>The specific formula of (2) is: />，/>For atmospheric pressure, the actual effective average permeability +.>And effective average permeability of the virtually intact zone +.>Substitution formulaCalculating the effective average permeability of the actually damaged area +.>Calculating the damage coefficient from the effective average permeability of the actually damaged area and the effective average permeability of the actually undamaged area>The specific calculation formula is as follows: />Calculating the crude oil extraction perfection from the theoretical production pressure difference and the actual production pressure difference>The specific calculation formula is as follows: />，/>For the actual production of pressure differences, the production from the well is +>And mining investment costs->Calculating mining cost performance->The specific calculation formula is as follows: />，/>For exponentially adjusting the parameter, the value is greater than 0, < >>Is a constant coefficient, and the numerical value is more than 0;
post-production data processing unit: calculating damage coefficient of first crude oil exploitation after addition by using the same calculation formulaPerfection of crude oil extraction>And cost performance of exploitation->；
Data comparison unit: comparing the data before and after the production increase, and respectively calculating damage reduction coefficientsExtraction perfection improvement factor->Cost performance improvement coefficient of mining->The specific calculation formula is as follows:、/>、/>，/>、/>、/>constant coefficients of the respective indices, +.>>0、/>>0、/>>0，/>For adjusting parameters +.>>0；
Yield increasing effect judging unit: if the value of the mining cost performance lifting coefficient is larger than 0, carrying out numerical judgment on the damage reduction coefficient and the mining perfection lifting coefficient, if both are smaller than 0, judging that the yield effect is not up to standard, if both are larger than 0, judging that the yield effect is up to standard, and if one positive and one negative are generated, marking as the yield effect to be calculated, and if the value of the mining cost performance lifting coefficient is smaller than or equal to 0, directly judging that the yield effect is not up to standard;
and a judgment result output unit: and sending the damage reduction coefficient, the mining perfection improvement coefficient and the mining cost performance improvement coefficient which reach the standard or are marked as damage reduction coefficient, mining cost performance improvement coefficient to be calculated for the yield increase effect to a comprehensive benefit improvement index calculation module, and sending the judging result of the yield increase measure which does not reach the standard to a yield increase scheme adjustment module.
The comprehensive benefit improvement index calculation module calculates a comprehensive benefit improvement index based on the received damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficient, and sends a calculation result to the yield increase scheme adjustment module.
Further, the comprehensive benefit improvement index calculation module calculates a comprehensive benefit improvement index based on the received damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficientThe specific calculation formula of (2) is as follows:wherein->、/>For exponentially adjusting parameters, ++>、/>Are all odd numbers and are filled with->、/>To impair the scaling factor of the reduction factor and the extraction perfection improvement factor, +.>>0、/>>0。
The yield increasing scheme adjusting module adjusts the current yield increasing scheme when receiving the judging result that the yield increasing measures are not up to standard or the invalid data of the comprehensive benefit increasing index, and continuously executes the current yield increasing scheme when receiving the valid data of the comprehensive benefit increasing index.
The database is used for storing data in all modules of the system.
In this embodiment, it should be specifically noted that, the preset value, the adjustment parameter, and the constant coefficient used in this embodiment are all selected based on actual needs, and this embodiment is not limited to specific numerical values herein.
The embodiment of fig. 2 provides an operation flow of the oil and gas well yield detection and correction system by dialysis capacity expansion, which comprises the following steps:
s1: marking a crude oil extraction area as a target area, and dividing the target area into a plurality of target subareas according to the ground extraction area;
s2: obtaining geological parameter information of a crude oil extraction area, physical property parameters of reservoir crude oil and formation pressure data;
s3: determining the type of oil well, parameters, theoretical production pressure differences and theoretical average permeability of the reservoir based on the recorded crude oil production zone data;
s4: predicting the yield of the oil well before each crude oil extraction based on the set crude oil extraction related information, the related information in the drilling, cementing and completion processes of the oil well and the previous crude oil extraction condition;
s5: monitoring and recording the whole process data of oil well exploitation;
s6: comparing the daily actual yield of the oil well with the expected minimum yield of the oil well, and judging whether a yield increasing measure needs to be adopted;
s7: processing data of the last crude oil exploitation before the yield increase and data of the first crude oil exploitation after the yield increase measures are taken, and comparing the processed data to judge whether the yield increase effect reaches the standard or not;
s8: judging that the yield effect reaches the standard or marking the yield effect as a damage reduction coefficient, a mining perfection improvement coefficient and a mining cost performance improvement coefficient which are obtained after treatment when the yield effect is to be calculated, calculating a comprehensive benefit improvement index, and sending a calculation result to a yield scheme adjusting module;
s9: and when receiving the judging result that the yield increasing measures are not up to standard or the invalid data of the comprehensive benefit increasing index, adjusting the current yield increasing scheme, and when receiving the valid data of the comprehensive benefit increasing index, continuing to execute the current yield increasing scheme.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The utility model provides an increase oil gas well output detects correction system through dialysis dilatation which characterized in that: comprising the following steps:
crude oil extraction area dividing module: the crude oil extraction area is marked as a target area, the target area is divided into a plurality of target subareas according to the ground extraction area, the number of each target subarea is marked as i, and the values of i are 1, 2.
The crude oil extraction area data acquisition module comprises: carrying out geological survey on the crude oil extraction area to obtain geological parameter information, reservoir crude oil physical parameters and stratum pressure data, and recording the geological parameter information, the reservoir crude oil physical parameters and the stratum pressure data;
the crude oil exploitation setting module: determining the type of oil well, parameters, theoretical production pressure differences and theoretical average permeability of the reservoir based on the recorded crude oil production zone data;
the crude oil extraction setting module comprises an oil well information determining unit, a theoretical production pressure difference calculating unit, a reservoir theoretical average permeability calculating unit and a data output unit, wherein the oil well information determining unit selects an oil well type and characteristic parameters thereof based on geological characteristics of a target subarea; the theoretical production pressure difference is calculated by taking the horizontal plane of the ground of the target subarea as a reference plane and establishing an equation based on the horizontal plane of the conveying position and the liquid level of crude oil, wherein the specific equation is as follows:，/>、/>flow rate of the level of the crude oil and the level of the transport position, respectively,/->、/>Flow pressure and crude oil delivery position pressure during stable production of crude oil respectively, < >>For crude oil density->、/>The level of the crude oil level and the level of the delivery position are respectively +.>For adding effective pressure head->For head loss->，/>For friction coefficient>For average flow rate +.>Is a local resistance coefficient->For the total length of the crude oil conveying pipeline, < > and->For conveying pipe diameter, i.e. theoretical production pressure differenceThe method comprises the steps of carrying out a first treatment on the surface of the The reservoir theoretical average permeability calculation unit calculates the volume of the rock surface from the recorded different subsurface depths +.>And absolute dense volume->Calculating subsurface depth rock porosity->The specific calculation formula is as follows: />Further calculate +.>The specific calculation formula is as follows: />，/>For the primary term coefficient->>0，/>To adjust the parameters, the permeability of the same underground depth in the target subarea is summarized and filtered to remove abnormal values, and then the theoretical average permeability of the reservoir is calculated>The specific calculation formula is as follows: />，/>For permeability at a certain subsurface depth in a single zone, < >>Permeability for a target subregion having the same subsurface depth number i; the data output unit uploads the calculated data to a crude oil extraction control center;
oil well yield prediction module: predicting the yield of the oil well before each crude oil extraction based on the set crude oil extraction related information, the related information in the drilling, cementing and completion processes of the oil well and the previous crude oil extraction condition;
the oil well yield prediction module comprises an oil well perfection condition judgment unit, an oil well yield prediction unit, an oil well expected minimum yield setting unit and a data output unit, wherein the oil well perfection condition judgment unit judges whether an oil well has imperfect conditions or not through naked eyes; the oil well yield prediction unit judges the oil well yield when the oil well condition is perfect with naked eyesThe calculation formula is as follows: />，/>For the thickness of stratum>For the viscosity of crude oil->Is crude oilVolume coefficient, < >>For supplying radius, ++>Judging the oil well yield when the oil well condition is imperfect for the radius of the shaft and the naked eye>The calculation formula is as follows:，/>adding resistance coefficient to seepage>The specific calculation formula is as follows: />Wherein->、/>Average permeability of damaged and undamaged areas in target subregion, respectively,/>Radius of contaminated or damaged reservoir for the zone near the bottom of the well; the expected minimum oil well yield setting unit sets the expected minimum oil well yield based on the predicted oil well yield and actual requirements; the data output unit sends the expected minimum yield to the yield-increasing demand judging module;
an oil well exploitation monitoring module: monitoring the whole exploitation process of the oil well, and recording actual production pressure difference, yield, stratum thickness, crude oil volume coefficient, crude oil viscosity, supply radius, shaft radius and radius of polluted or damaged reservoir in the zone near the bottom of the well;
yield-increasing demand judging module: comparing the daily actual yield of the oil well with the expected minimum yield of the oil well, and judging whether a yield increasing measure needs to be adopted;
yield effect evaluation module: processing data of the last crude oil exploitation before the yield increase and data of the first crude oil exploitation after the yield increase measures are taken, and comparing the processed data to judge whether the yield increase effect reaches the standard or not;
the yield-increasing effect evaluation module comprises a data processing unit before yield increasing, a data processing unit after yield increasing, a data comparison unit, a yield-increasing effect judgment unit and a judgment result output unit, wherein the specific evaluation process is as follows:
a data processing unit before yield increase: actual effective average permeability of last crude oil extraction before yield increaseThe specific calculation formula of (2) is as follows: />，/>For practical production of pressure difference>Calculating effective average permeability of virtually lossless zone for the specific gravity of crude oil on the ground>The specific formula of (2) is: />，/>Is at atmospheric pressure, will be solidEffective average permeability->And effective average permeability of the virtually intact zone +.>Substitution formulaCalculating the effective average permeability of the actually damaged area +.>Calculating the damage coefficient from the effective average permeability of the actually damaged area and the effective average permeability of the actually undamaged area>The specific calculation formula is as follows: />Calculating the crude oil extraction perfection from the theoretical production pressure difference and the actual production pressure difference>The specific calculation formula is as follows: />，/>For the actual production of pressure differences, the production from the well is +>And mining investment costs->Calculating mining cost performance->The specific calculation formula is as follows: />，/>For exponentially adjusting the parameter, the value is greater than 0, < >>Is a constant coefficient, and the numerical value is more than 0;
post-production data processing unit: calculating damage coefficient of first crude oil exploitation after addition by using the same calculation formulaPerfection of crude oil extraction>And cost performance of exploitation->；
Data comparison unit: comparing the data before and after the production increase, and respectively calculating damage reduction coefficientsExtraction perfection improvement factor->Cost performance improvement coefficient of mining->The specific calculation formula is as follows:、/>、/>，/>、/>、/>constant coefficients of the respective indices, +.>>0、/>>0、/>>0，/>For adjusting parameters +.>>0；
Yield increasing effect judging unit: if the value of the mining cost performance lifting coefficient is larger than 0, carrying out numerical judgment on the damage reduction coefficient and the mining perfection lifting coefficient, if both are smaller than 0, judging that the yield effect is not up to standard, if both are larger than 0, judging that the yield effect is up to standard, and if one positive and one negative are generated, marking as the yield effect to be calculated, and if the value of the mining cost performance lifting coefficient is smaller than or equal to 0, directly judging that the yield effect is not up to standard;
and a judgment result output unit: the damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficient which reach the standard or are marked as to-be-calculated yield increase effects are sent to a comprehensive benefit improvement index calculation module, and yield increase measure unreach judgment results are sent to a yield increase scheme adjustment module;
the comprehensive benefit improvement index calculation module: calculating a comprehensive benefit improvement index based on the received damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficient, and sending a calculation result to a yield-increasing scheme adjustment module;
the yield-increasing scheme adjusting module: and when receiving the judging result that the yield increasing measures are not up to standard or the invalid data of the comprehensive benefit increasing index, adjusting the current yield increasing scheme, and when receiving the valid data of the comprehensive benefit increasing index, continuing to execute the current yield increasing scheme.
2. The system for detecting and correcting the production of an oil and gas well by dialysis capacity expansion according to claim 1, wherein: the crude oil extraction area data acquisition module comprises a geological survey data recording unit, a reservoir crude oil physical property parameter acquisition unit, a stratum pressure data acquisition unit and a data output unit, wherein the geological survey data recording unit surveys rock surface volumes and absolute compact volumes of different underground depths of a target subarea; the reservoir crude oil physical property parameter acquisition unit acquires the viscosity, density and crude oil volume coefficient of crude oils with different reservoir thicknesses; the stratum pressure data acquisition unit acquires pressure data of different reservoir thicknesses in the target subarea; the data output unit sends the acquired data to the crude oil exploitation setting module.
3. The system for detecting and correcting the production of an oil and gas well by dialysis capacity expansion according to claim 1, wherein: the yield-increasing demand judging module comprises an actual yield data recording unit, a data comparison unit, a yield-increasing demand judging unit and a judging result output unit, wherein the actual yield data recording unit records daily oil well yield data; the data comparison unit is used for comparing the actual yield data with the expected minimum yield of the oil well; the yield-increasing demand judging unit judges that no yield-increasing measures need to be taken when the actual yield is larger than or equal to the expected minimum yield of the oil well, and judges that the yield-increasing measures need to be taken when the actual yield is smaller than the expected minimum yield of the oil well; and the judging result output unit sends the judging result to the crude oil extraction control center.
4. The system for detecting and correcting the production of an oil and gas well by dialysis capacity expansion according to claim 1, wherein: the comprehensive benefit improvement index calculation module calculates a comprehensive benefit improvement index based on the received damage reduction coefficient, the exploitation perfection improvement coefficient and the exploitation cost performance improvement coefficientThe specific calculation formula of (2) is as follows:wherein->、/>For exponentially adjusting parameters, ++>、/>Are all odd numbers and are filled with->、/>To impair the scaling factor of the reduction factor and the extraction perfection improvement factor, +.>>0、/>>0。
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