CN105160414B - Method and device for predicting type of full oil reservoir production area - Google Patents
Method and device for predicting type of full oil reservoir production area Download PDFInfo
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- CN105160414B CN105160414B CN201510419405.3A CN201510419405A CN105160414B CN 105160414 B CN105160414 B CN 105160414B CN 201510419405 A CN201510419405 A CN 201510419405A CN 105160414 B CN105160414 B CN 105160414B
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Abstract
The invention discloses a method and a device for predicting the type of a full oil reservoir producing area, wherein the method comprises the following steps: determining the production division standard of the production wells according to the production data of all the mined production wells in the whole oil reservoir; determining the stratum pressure of all the mined production wells during the production according to the test pressure data of all the mined production wells in the whole oil reservoir, and determining the pressure division standard of the production wells according to the stratum pressure of all the mined production wells during the production; synthesizing the production division standard and the pressure division standard, and determining the well type of each mined production well according to the production data of each mined production well and the formation pressure during production; drawing a relation graph of the well type of the production well and the geological characteristic parameters; and predicting the type of the full oil reservoir production area according to the relation graph. The technical scheme improves the accuracy of the type prediction of the whole oil reservoir producing area, and has guiding significance for the actual production well position deployment, the development strategy formulation and the like.
Description
Technical field
The present invention relates to Exploration of Oil And Gas technical field, in particular to a kind of method for predicting full oil reservoir producing region type and
Device.
Background technique
It is carried out in advance currently, the method for predicting full oil reservoir producing region type both at home and abroad is specifically included that according to oil-gas reservoir Reservoir type
It surveys and is predicted etc. according to oil-gas reservoir flow unit.Existing various methods carry out producing region to oil reservoir only with static data
Type prediction.Since these static datas only include the intrinsic geologic characteristic parameter α etc. in some stratum, which results in benefits
When being predicted with these methods full oil reservoir producing region type, the production capacity height estimated to oil-gas reservoir each region or the size of capacity
Cannot have intuitive concept, and with oil-gas reservoir whole development after, it may appear that the actual production of producing region type and prediction produce
Situations such as amount is not consistent.By above-mentioned analysis it is found that predicting that full oil reservoir produces according to the method for existing prediction full oil reservoir producing region type
Area's types results are inaccurate, to affect subsequent correct development decision-making.
Summary of the invention
The embodiment of the invention provides a kind of methods for predicting full oil reservoir producing region type, to improve full oil reservoir producing region type
The accuracy of prediction, this method comprises:
According to the yield datas for having exploited producing well all in full oil reservoir, the production well yield criteria for classifying is determined；
According to the test pressure datas for having exploited producing well all in full oil reservoir, determine all when having exploited producing well and going into operation
Strata pressure, according to it is all exploited producing well go into operation when strata pressures, determine the pressure criteria for classifying of producing well；
Based on the yield criteria for classifying and the pressure criteria for classifying, when according to each yield data for having exploited producing well and operation
Strata pressure, determine and each exploited the well type of producing well；Well type represents the Yield Grade and strata pressure of producing well
Grade；
Draw the well type of producing well and the relational graph of geologic characteristic parameter α；
According to relational graph, the type in full oil reservoir producing region is predicted.
In one embodiment, yield data include: individual well initil output, average product, it is tired produce and production decline rate its
One of or any combination.
In one embodiment, geologic characteristic parameter α includes: well perforation thickness, well brill chance reservoir thickness, well maximum perforation
Sand thickness, well perforated interval mean permeability, well perforated interval formation capacity and well, which bore, meets one of reservoir formation coefficient or appoints
Meaning combination.
In one embodiment, the relational graph of the well type and geologic characteristic parameter α of drawing producing well includes:
It draws strata pressure and is greater than the well type and geologic feature of first threshold and yield greater than the producing well of second threshold
The relational graph of parameter.
In one embodiment, it is based on the yield criteria for classifying and the pressure criteria for classifying, according to each producing well of having exploited
Strata pressure when yield data and operation, determines the well type for each having exploited producing well, comprising:
Based on the yield criteria for classifying and the pressure criteria for classifying, when according to each yield data for having exploited producing well and operation
Strata pressure, the relational graph of strata pressure when drawing all yield datas for having exploited producing well and operation；
The relational graph of strata pressure, determines the well type of all producing wells when being gone into operation according to yield data and individual well.
The embodiment of the invention also provides a kind of devices for predicting full oil reservoir producing region type, to improve full oil reservoir producing region class
The accuracy of type prediction, the device include:
Yield criteria for classifying determining module, for determining according to the yield datas for having exploited producing well all in full oil reservoir
Produce the well yield criteria for classifying；
Pressure criteria for classifying determining module, for according to the test pressure datas for having exploited producing well all in full oil reservoir,
Determine all strata pressures exploited when producing well is gone into operation, according to all strata pressures exploited when producing well is gone into operation, really
Determine the pressure criteria for classifying of producing well；
Well determination type module has exploited production according to each for being based on the yield criteria for classifying and the pressure criteria for classifying
Strata pressure when well yield data and operation, determines the well type for each having exploited producing well；Well type represents producing well
Yield Grade and strata pressure grade；
Relational graph drafting module, for drawing the well type of producing well and the relational graph of geologic characteristic parameter α；
Producing region type prediction module, for predicting the type in full oil reservoir producing region according to relational graph.
In one embodiment, yield data include: individual well initil output, average product, it is tired produce and production decline rate its
One of or any combination.
In one embodiment, geologic characteristic parameter α includes: well perforation thickness, well brill chance reservoir thickness, well maximum perforation
Sand thickness, well perforated interval mean permeability, well perforated interval formation capacity and well, which bore, meets one of reservoir formation coefficient or appoints
Meaning combination.
In one embodiment, relational graph drafting module is specifically used for:
It draws strata pressure and is greater than the well type and geologic feature of first threshold and yield greater than the producing well of second threshold
The relational graph of parameter.
In one embodiment, well determination type module, comprising:
The relational graph drafting module of strata pressure when yield data and operation, for being drawn based on the yield criteria for classifying and pressure
Minute mark is quasi-, strata pressure when according to each yield data for having exploited producing well and operation, and drafting is all to have exploited producing well
Yield data and when operation strata pressure relational graph；
Well type determination module determines institute for the relational graph according to strata pressure when yield data and individual well operation
There is the well type of producing well.
With predict that full oil reservoir produces only with static data (such as intrinsic geologic characteristic parameter α in stratum etc.) in the prior art
The technical solution of area's type compares, and the embodiment of the present invention is complete according to the yield criteria for classifying and the pressure criteria for classifying, and each
Strata pressure when yield data and the operation of producing well has been exploited in oil reservoir, determines the well type for each having exploited producing well,
The relational graph for drawing well type and geologic characteristic parameter α carries out full oil reservoir further according to the relationship of well type and geologic characteristic parameter α
The division and prediction in different type producing region are thus set up oil-gas reservoir static (geologic characteristic parameter α etc.) and (are examined with development behavior
Considered several dynamic datas such as yield exploited when producing well well is gone into operation) between connection, as one kind is association of activity and inertia progress
The technical solution of full oil reservoir producing region type prediction.By verifying to the later real data of full oil reservoir whole development, producing region is found
Practical well yield is consistent with the yield of prediction in type.Therefore, using technical solution provided by the invention to full oil reservoir producing region
The prediction of type improves the accuracy of full oil reservoir producing region type prediction, to the system of actual production well site deployment and development strategy
Fixed wait has more directive significance.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not
Constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the flow diagram that the method for full oil reservoir producing region type is predicted in the embodiment of the present invention；
Fig. 2 is the initial daily oil production of individual well and individual well operation initial stage pressure dependence figure in the embodiment of the present invention；
Fig. 3 is all producing well maximum perforation sand thickness, the total perforation thickness of individual well and well type in the embodiment of the present invention
Relational graph；
Fig. 4 is that strata pressure is greater than all producing wells of first threshold in the embodiment of the present invention and yield is greater than second threshold
Maximum perforation sand thickness, the relational graph of individual well total perforation thickness and well type of producing well；
Fig. 5 is that producing well bores the single sand thickness of chance and corresponding mean permeability relational graph in the embodiment of the present invention；
Fig. 6 is the high, medium and low producing region division result schematic diagram of certain oil reservoir in the embodiment of the present invention；
Fig. 7 is the structural block diagram that the device of full oil reservoir producing region type is predicted in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right below with reference to embodiment and attached drawing
The present invention is described in further details.Here, exemplary embodiment and its explanation of the invention is used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Currently, the method for predicting hydrocarbon reservoirs producing region type mainly includes being predicted according to oil-gas reservoir Reservoir type both at home and abroad
It is predicted etc. with according to oil-gas reservoir flow unit.Various methods carry out subregion division to oil reservoir only with static data, from
And classification development is carried out, but various division methods have not set up static the contacting between development behavior of oil-gas reservoir, to oil gas
The estimated production capacity height in hiding each region or the size of capacity cannot have intuitive concept.It, cannot be correct after oil reservoir whole development
Instruct development decision-making and deployment.
For the producing well of oil-gas reservoir, by Darcy's equation it is found that well capacity by reservoir properties, fluid properties,
The influence of the parameters such as drainage radius, reservoir thickness.For a certain specific oil-gas reservoir, if oil-gas reservoir Well Pattern And Spacing one
Under fixed, reservoir fluid property unanimous circumstances, well capacity difference is mainly influenced by the thickness transitivity parameter of reservoir.Cause
This can establish the relationship of well capacity height and reservoir parameter, to carry out by studying a certain specific oil-gas reservoir
The division in oil-gas reservoir producing region.According to above-mentioned analysis, the invention proposes one kind to pass through with establishing oil well output dynamic cataloging and well
Relationship between matter property parameters, to predict the new method of full oil reservoir producing region type, as one kind, which is association of activity and inertia, carries out inhomogeneity
The new method that type producing region divides.Explanation is introduced in detail below.
Fig. 1 is the flow diagram that the method for full oil reservoir producing region type is predicted in the embodiment of the present invention, as shown in Figure 1, should
Method includes:
Step 101: according to the yield datas for having exploited producing well all in full oil reservoir, determining that production well yield divides mark
It is quasi-；
Step 102: according to the test pressure datas for having exploited producing well all in full oil reservoir, determining and all exploited production
Strata pressure when well is gone into operation determines that the pressure of producing well divides according to all strata pressures exploited when producing well is gone into operation
Standard；
Step 103: being based on the yield criteria for classifying and the pressure criteria for classifying, exploited production well yield according to each
Strata pressure when data and operation, determines the well type for each having exploited producing well；The well type represents the production of producing well
Measure grade and strata pressure grade；
Step 104: drawing the well type of producing well and the relational graph of geologic characteristic parameter α；
Step 105: according to relational graph, predicting the type in full oil reservoir producing region.
With predict that full oil reservoir produces only with static data (such as intrinsic geologic characteristic parameter α in stratum etc.) in the prior art
The technical solution of area's type compares, and the embodiment of the present invention is complete according to the yield criteria for classifying and the pressure criteria for classifying, and each
Strata pressure when yield data and the operation of producing well has been exploited in oil reservoir, determines the well type for each having exploited producing well,
The relational graph for drawing well type and geologic characteristic parameter α carries out full oil reservoir further according to the relationship of well type and geologic characteristic parameter α
The division and prediction in different type producing region are thus set up oil-gas reservoir static (geologic characteristic parameter α etc.) and (are examined with development behavior
Considered several dynamic datas such as yield exploited when producing well well is gone into operation) between connection, as one kind is association of activity and inertia progress
The technical solution of full oil reservoir producing region type prediction.By verifying to the later real data of full oil reservoir whole development, producing region is found
Practical well yield is consistent with the yield of prediction in type.Therefore, using technical solution provided by the invention to full oil reservoir producing region
The prediction of type improves the accuracy of full oil reservoir producing region type prediction, to the system of actual production well site deployment and development strategy
Fixed wait has more directive significance.
In one embodiment, the yield data mentioned in above-mentioned steps 101 may include: individual well initil output, be averaged
One of yield, tired production and production decline rate or any combination.As shown in Fig. 2, the yield data in the embodiment of the present invention is
Being illustrated using individual well initil output (such as the initial daily oil production of individual well shown in Fig. 2 ordinate).
In addition, the figures such as triangle and circle in Fig. 2 represent producing well different in full oil reservoir.
When it is implemented, being analyzed in above-mentioned steps 101 by the yield data to producing wells all in oil gas field
(to the multi-proxy investigations such as individual well initil output, average product, tired production, production decline rate), determine the production of different type well
The criteria for classifying is measured, all wells are divided into the well of respective type according to well yield data, based on the step to institute in full oil reservoir
After thering is the yield data of producing well to be analyzed, it can determine that every mouthful of producing well particularly belongs to stripper well, middle production well or height
Produce well.
When it is implemented, in above-mentioned steps 102, the test pressure data based on individual well determines ground when individual well is gone into operation
Stressor layer.If individual well does not have initial pressure test data, the pressure testing data of surrounding well similar time can be borrowed.To individual well
Strata pressure is for statistical analysis when operation, determines high pressure, the low pressure criteria for classifying, and all wells are drawn according to the pressure condition of operation
It is divided into high-pressure well, two class well of low pressure well.For example the specific meaning of step 102 for: for being produced for well in low pressure, if
The well pressure is significantly raised after later period water filling and becomes high-pressure well, then the well production may become high-yield well, rather than middle production well.
Therefore, pressure also has vital influence to yield height.By step 102, prediction provided in an embodiment of the present invention is complete
The method of the producing region type of oil reservoir, on the basis of step 101, it is also contemplated that pressure data when specific operation thus improves
The accuracy of the producing region type prediction of full oil reservoir, has more subsequent actual production well site deployment, formulation of development strategy etc.
Directive significance.
The pressure criteria for classifying mentioned in the embodiment of the present invention is i.e. are as follows: strata pressure when being gone into operation according to individual well determines production
Well belongs to the criteria for classifying of high-pressure well or low pressure well.How specific high pressure and low pressure define, and are depending on real work
's.
When it is implemented, in conjunction with the criteria for classifying in step 101 and step 102 and as a result, being incited somebody to action in above-mentioned steps 103
All wells are divided into the well two major classes of the well of high pressure different output type, low pressure different type yield.It is mentioned in above-mentioned steps 103
To well type may include: high yield high-pressure well, high yield low pressure well, middle production high-pressure well, middle production low pressure well, low yield high-pressure well and low
Produce low pressure well.
In one embodiment, in above-mentioned steps 103, the yield criteria for classifying and the pressure criteria for classifying, root are based on
Strata pressure when according to each yield data for having exploited producing well and operation determines the well type for each having exploited producing well,
May include:
Based on the yield criteria for classifying and the pressure criteria for classifying, according to each yield data for having exploited producing well and throwing
Strata pressure when production, the relational graph of strata pressure is (such as Fig. 2 institute when drawing all yield datas for having exploited producing well and operation
Show)；
The relational graph of strata pressure, determines the well type of all producing wells when being gone into operation according to yield data and individual well.
When it is implemented, different type well geologic feature is analyzed in above-mentioned steps 104, so that it is determined that influencing well production
The main controlling geological factors of height.The relational graph of drafting different type well and geologic characteristic parameter α can be attempted, different type is such as drawn
Well and well perforation thickness, well bore and meet reservoir thickness, well maximum perforation sand thickness, well perforated interval mean permeability, well perforated interval
Formation capacity, well bore meet the parameters such as reservoir formation coefficient relational graph (such as: as shown in Figure 3).
In one embodiment, in above-mentioned steps 104, geologic characteristic parameter α may include: well perforation thickness, well brill chance
Reservoir thickness, well maximum perforation sand thickness, well perforated interval mean permeability, well perforated interval formation capacity and well bore with meeting reservoir
One of layer coefficients or any combination.In the embodiment of the present invention, using well perforation thickness, (individual well as shown in Figure 3 is maximum
Perforation sand thickness and the total perforation thickness of individual well) it is illustrated.
When it is implemented, in one embodiment, the relational graph of the well type and geologic characteristic parameter α of drawing producing well can
With include: draw strata pressure be greater than all producing wells of first threshold and yield be greater than second threshold producing well well type with
The relational graph of geologic characteristic parameter α, after as the data for producing well and low-voltage and low-yield well in low pressure are rejected, then draw well type with
The relational graph of geologic characteristic parameter α.
Since the data representativeness for producing well and low-voltage and low-yield well in low pressure is poor, analyzed again after can rejecting.Such as Fig. 4 institute
It is shown as after producing well and low-voltage and low-yield well in rejecting low pressure, the well type of drafting and the relational graph of geologic characteristic parameter α.It can by the figure
Clearly to find out that well type and geologic characteristic parameter α have clearly relationship, carried out convenient for the type to full oil reservoir producing region pre-
It surveys, improves the accuracy of the producing region type prediction of full oil reservoir.Above-mentioned first threshold and second threshold according to real work situation and
It is fixed.
When it is implemented, according to the relational graph, logging well in conjunction with drilling wells all in full oil reservoir in above-mentioned steps 105
The understanding such as explanation results, full oil reservoir sedimentary facies, reservoir thickness distribution, predict the type in full oil reservoir producing region, and by difference
Relational graph is analyzed, i.e., according to the relationship between the well type of foundation and well geological property parameter, carries out full oil reservoir producing region class
The accurate division of type.The understanding such as relationship, full oil reservoir correlation geology attribute evaluation result and sedimentary facies based on foundation, to full oil reservoir
Carry out the division of different type producing region (prediction producing region type).
Based on the same inventive concept, a kind of device for predicting full oil reservoir producing region type is additionally provided in the embodiment of the present invention,
As described in the following examples.The principle solved the problems, such as due to the device of prediction full oil reservoir producing region type and the full oil reservoir producing region of prediction
The method of type is similar, therefore predicts that the implementation of the device of full oil reservoir producing region type may refer to predict full oil reservoir producing region type
The implementation of method, overlaps will not be repeated.Used below, predetermined function may be implemented in term " unit " or " module "
Software and/or hardware combination.Although device described in following embodiment is preferably realized with software, hardware,
Or the realization of the combination of software and hardware is also that may and be contemplated.
Fig. 7 is the structural block diagram that the device of full oil reservoir producing region type is predicted in the embodiment of the present invention, as shown in fig. 7, the dress
It sets and includes:
Yield criteria for classifying determining module 10, for according to the yield datas for having exploited producing well all in full oil reservoir, really
Surely the well yield criteria for classifying is produced；
Pressure criteria for classifying determining module 20, for according to the test number pressures for having exploited producing well all in full oil reservoir
According to, determine it is all exploited producing well go into operation when strata pressures, according to it is all exploited producing well go into operation when strata pressures,
Determine the pressure criteria for classifying of producing well；
Well determination type module 30 has been opened for being based on the yield criteria for classifying and the pressure criteria for classifying according to each
Strata pressure when yield data and the operation of producing well is adopted, determines the well type for each having exploited producing well；Well type represents
The Yield Grade and strata pressure grade of producing well；
Relational graph drafting module 40, for drawing the well type of producing well and the relational graph of geologic characteristic parameter α；
Producing region type prediction module 50, for predicting the type in full oil reservoir producing region according to relational graph.
In one embodiment, predicted output data includes: individual well initil output, average product, tired production and production decline
One of rate or any combination.
In one embodiment, geologic characteristic parameter α includes: well perforation thickness, well brill chance reservoir thickness, well maximum perforation
Sand thickness, well perforated interval mean permeability, well perforated interval formation capacity and well, which bore, meets one of reservoir formation coefficient or appoints
Meaning combination.
In one embodiment, well determination type module 30, comprising:
The relational graph drafting module of strata pressure when yield data and operation, for being based on the yield criteria for classifying and pressure
The power criteria for classifying, strata pressure when according to each yield data for having exploited producing well and operation, drafting is all to have exploited life
The relational graph of strata pressure when producing well yield data and going into operation；
Well type determination module determines institute for the relational graph according to strata pressure when yield data and individual well operation
There is the well type of producing well.
In one embodiment, relational graph drafting module 40 is specifically used for:
It draws strata pressure and is greater than the well type of all producing wells of first threshold and yield greater than the producing well of second threshold
With the relational graph of geologic characteristic parameter α.
Obviously, those skilled in the art should be understood that each module of the above-mentioned embodiment of the present invention or each step can be with
It is realized with general computing device, they can be concentrated on a single computing device, or be distributed in multiple computing devices
On composed network, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by it
Store and be performed by computing device in the storage device, and in some cases, can be held with the sequence for being different from herein
The shown or described step of row, perhaps they are fabricated to each integrated circuit modules or will be multiple in them
Module or step are fabricated to single integrated circuit module to realize.In this way, the embodiment of the present invention be not limited to it is any specific hard
Part and software combine.
It is illustrated again with example below, in order to understanding how to implement the present invention.
By taking certain failure formula develops oil reservoir as an example, well is divided into conjunction with all well yield data of the oil reservoir and pressure data
Six classes, respectively high yield high-pressure well, high yield low pressure well, middle production high-pressure well, middle production low pressure well, low yield high-pressure well and low production and low pressure well
Six class wells.It is illustrated in figure 2 the initial daily oil production of oil reservoir individual well (as yield data) and initial stage pressure of going into operation (is as gone into operation
When strata pressure) relational graph, can also equally draw the relationship of other yield datas and pressure, thus finally integrate to well class
Type is divided, to carry out the prediction of producing region type.
Recognize in conjunction with static state, classification analysis is carried out to high-yield well, middle production well and stripper well, it is thus identified that the ground of different type well
Matter feature.The single perforation sand body of high-yield well has a substantially greater thickness, total perforation thickness is thick；The middle single perforation sand thickness of production well is medium；It is low
The production single perforation sand thickness of well is smaller, total perforation thickness is also smaller.
As shown in figure 3, depicting well classification (as well type) and individual well maximum perforation sand thickness and the total perforation of individual well
The relationship of thickness.It can be seen from figure 3 that well type and individual well maximum perforation sand thickness and the total perforation thickness of individual well have certain relationship,
But relationship is simultaneously unintelligible.
By analyzing it is found that the pressure of well has an impact to well yield.For low pressure high-yield well, if well is gone into operation
Pressure is high, and well yield should be higher, still falls within high-yield well.For being produced for well in low pressure, if the well pressure after later period water filling
Power is significantly raised simultaneously to become high-pressure well, then the well production may become high-yield well, rather than middle production well.Equally, low for low pressure
It produces for well, if well pressure is higher when going into operation, the well of the position may become high-yield well or middle production well.Therefore, in low pressure
The data representativeness for producing well and low-voltage and low-yield well is poor, is analyzed again after can rejecting.
It is illustrated in figure 4 to reject and produces the well type drawn after well and low-voltage and low-yield well data and geologic characteristic parameter α in low pressure
Relational graph.It can clearly find out that well type and geologic characteristic parameter α have clearly relationship by the Fig. 4, can establish well class
The geologic characteristic parameter α criteria for classifying of type.The high-yield well criteria for classifying are as follows: individual well maximum perforation sand thickness > 10m or individual well are always penetrated
Hole sand thickness > 22m；The middle production well criteria for classifying are as follows: 4m≤individual well maximum perforation sand thickness≤10m and the total perforation sand body of individual well
Thickness≤22m；The stripper well criteria for classifying are as follows: individual well maximum perforation sand thickness < 4m and the total perforation sand thickness≤22m of individual well.
Although here not comprising reservoir permeability parameter, the actually single sand thickness of reservoir in well classification of type
Imply reservoir properties.Fig. 5 show the relational graph that well bores the single sand thickness and single sand body mean permeability of meeting sand body,
As shown in Figure 5, single sand thickness is bigger, and the mean permeability of corresponding single sand body is higher and variation range is smaller；Single sand
Body thickness is smaller, and the corresponding mean permeability of single sand body is relatively low, and variation range is larger.It can be seen that the maximum single sand of individual well
Body perforation thickness is bigger, and corresponding reservoir properties are higher, and yield is higher.The well type of Fig. 4 and the relationship of geologic parameter can be used to
The producing region for carrying out full oil reservoir divides.
In addition, the figures such as diamond shape and circle in Fig. 5 represent the sedimentary facies of different sand bodies.
The geologic characteristic parameter α criteria for classifying of well type based on foundation and the oil reservoir different layers sand thickness spread data
Body, the division in the high, medium and low three classes producing region of the whole district has been carried out to the oil reservoir, and division result figure is as shown in Figure 6.The meaning of the figure is
After oil reservoir full scale waterflood, high, medium and low producing region represents the new well capacity of different location.Because the oil reservoir south is stored up
Layer is good, and high yield producing region range is big, and the north is mainly in, based on stripper well.The graph clearly recognizes to policymaker, and oil reservoir newly bores
Well and water filling are northern in the first tentative exploitation of high yield wellblock based on preferential development south, low yield in redevelopment after gradually recognizing
Area.The graph provides guidance to the deployment of new well well location, the formulation of development strategy.
The present invention is applied in the development plan establishment of certain external large-scale oil reservoir, by establish well type with
The relational implementation of the geological property division in the high, medium and low producing region of full oil reservoir, the actual measurement Production development of stepout well demonstrate result
Reliability.The beneficial effects of the present invention are method of the invention is using the method being association of activity and inertia to the producing region type of full oil reservoir
It is predicted, prediction accuracy is high, has more directive significance to formulation of actual production well site deployment, development strategy etc..
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the embodiment of the present invention can have various modifications and variations.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method for predicting full oil reservoir producing region type characterized by comprising
According to the yield datas for having exploited producing well all in full oil reservoir, the production well yield criteria for classifying is determined；
According to the test pressure datas for having exploited producing well all in full oil reservoir, all ground exploited when producing well is gone into operation are determined
Stressor layer determines the pressure criteria for classifying of producing well according to all strata pressures exploited when producing well is gone into operation；
Based on the yield criteria for classifying and the pressure criteria for classifying, when according to each yield data for having exploited producing well and operation
Strata pressure, determine and each exploited the well type of producing well；The well type represents Yield Grade and the stratum of producing well
Pressure rating；Well type include: high yield high-pressure well, high yield low pressure well, middle production high-pressure well, middle production low pressure well, low yield high-pressure well and
Low production and low pressure well；
Draw the different well types relational graph different from geologic characteristic parameter α of producing well；
It is thick in conjunction with the result of log interpretation of drilling well all in full oil reservoir, full oil reservoir sedimentary facies, reservoir according to the different relational graphs
Degree distribution understanding, predicts the type in full oil reservoir producing region；
Based on the yield criteria for classifying and the pressure criteria for classifying, when according to each yield data for having exploited producing well and operation
Strata pressure, determine and each exploited the well type of producing well, comprising: mark is divided based on the yield criteria for classifying and pressure
Standard, strata pressure when according to each yield data for having exploited producing well and operation draw all productions for having exploited producing well
The relational graph of strata pressure when measuring data and going into operation；The relational graph of strata pressure, determines when being gone into operation according to yield data and individual well
The well type of all producing wells；
The different well types relational graph different from geologic characteristic parameter α for drawing producing well includes: to draw strata pressure to be greater than first
Threshold value and yield are greater than the well type of the producing well of second threshold and the relational graph of geologic characteristic parameter α.
2. predicting the method for full oil reservoir producing region type as described in claim 1, which is characterized in that the yield data includes:
One of individual well initil output, average product, tired production and production decline rate or any combination.
3. predicting the method for full oil reservoir producing region type as described in claim 1, which is characterized in that the geologic characteristic parameter α packet
Include: well perforation thickness, well bore with meeting reservoir thickness, well maximum perforation sand thickness, well perforated interval mean permeability, well perforated interval
Layer coefficients and well, which bore, meets one of reservoir formation coefficient or any combination.
4. a kind of device for predicting full oil reservoir producing region type characterized by comprising
Yield criteria for classifying determining module, for determining production according to the yield datas for having exploited producing well all in full oil reservoir
The well yield criteria for classifying；
Pressure criteria for classifying determining module, for determining according to the test pressure datas for having exploited producing well all in full oil reservoir
All strata pressures exploited when producing well is gone into operation determine life according to all strata pressures exploited when producing well is gone into operation
Produce the pressure criteria for classifying of well；
Well determination type module has exploited production according to each for being based on the yield criteria for classifying and the pressure criteria for classifying
Strata pressure when well yield data and operation, determines the well type for each having exploited producing well；The well type represents life
Produce well yield grade and strata pressure grade；Well type includes: high yield high-pressure well, high yield low pressure well, middle production high-pressure well, middle production
Low pressure well, low yield high-pressure well and low production and low pressure well；
Relational graph drafting module, for drawing the different well types relational graph different from geologic characteristic parameter α of producing well；
Producing region type prediction module is used for according to the different relational graphs, in conjunction with the well log interpretation knots of drilling well all in full oil reservoir
Fruit, full oil reservoir sedimentary facies, reservoir thickness distribution understanding, predict the type in full oil reservoir producing region；
The well determination type module, comprising:
The relational graph drafting module of strata pressure when yield data and operation, for being drawn based on the yield criteria for classifying and pressure
Minute mark is quasi-, strata pressure when according to each yield data for having exploited producing well and operation, and drafting is all to have exploited producing well
Yield data and when operation strata pressure relational graph；
Well type determination module determines all lifes for the relational graph according to strata pressure when yield data and individual well operation
Produce the well type of well；
The relational graph drafting module is specifically used for: drawing the life that strata pressure is greater than first threshold and yield is greater than second threshold
Produce the well type of well and the relational graph of geologic characteristic parameter α.
5. predicting the device of full oil reservoir producing region type as claimed in claim 4, which is characterized in that the yield data includes:
One of individual well initil output, average product, tired production and production decline rate or any combination.
6. predicting the device of full oil reservoir producing region type as claimed in claim 4, which is characterized in that the geologic characteristic parameter α packet
Include: well perforation thickness, well bore with meeting reservoir thickness, well maximum perforation sand thickness, well perforated interval mean permeability, well perforated interval
Layer coefficients and well, which bore, meets one of reservoir formation coefficient or any combination.
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| CN105975761B (en) * | 2016-04-29 | 2018-11-16 | 中国石油天然气股份有限公司 | Method and device for determining type of oil and gas reservoir |
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