CN105160414A - Method and device for predicting type of whole oil reservoir production area - Google Patents
Method and device for predicting type of whole oil reservoir production area Download PDFInfo
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- CN105160414A CN105160414A CN201510419405.3A CN201510419405A CN105160414A CN 105160414 A CN105160414 A CN 105160414A CN 201510419405 A CN201510419405 A CN 201510419405A CN 105160414 A CN105160414 A CN 105160414A
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Abstract
The invention discloses a method and device for predicting the type of a whole oil reservoir production area. The method comprises steps of: determining an output classification standard of production wells according to the output data of all exploited production wells in the whole oil reservoir; determining the stratum pressure when all the exploited production wells are put into production according to the test pressure data of all the exploited production wells in the whole oil reservoir, and determining a pressure classification standard of the production wells according to the stratum pressure when all the exploited production wells are put into production; determining the type of each exploited production well according to the output data of the exploited production well and the stratum pressure when the exploited production well is put into production in combination with the output classification standard and the pressure classification standard; drawing a relation graph between the type of the production wells and a geologic feature parameter; and according to the relation graph, predicting the type of the whole oil reservoir production area. The method improves the prediction precision of the whole oil reservoir production area and has guidance meaning to actual production well location disposition and exploitation strategy establishment.
Description
Technical field
The present invention relates to Exploration of Oil And Gas technical field, particularly a kind of method and device predicting full oil reservoir producing region type.
Background technology
At present, the method for prediction full oil reservoir producing region type mainly comprises both at home and abroad: carry out predicting and predicting etc. according to hydrocarbon-bearing pool flow unit according to hydrocarbon-bearing pool Reservoir type.Existing various method all only adopts static data to carry out producing region type prediction to oil reservoir.Because these static datas only comprise the intrinsic geologic characteristic parameter α etc. in some stratum, which results in when utilizing these methods to predict full oil reservoir producing region type, the production capacity height estimate hydrocarbon-bearing pool regional or the size of capacity can not have concept intuitively, and after hydrocarbon-bearing pool whole development, the actual output that there will be producing region type and the situation such as forecast production does not conform to.Known by above-mentioned analysis, the method according to existing prediction full oil reservoir producing region type predicts full oil reservoir producing region types results out of true, thus have impact on follow-up correct development decision-making.
Summary of the invention
Embodiments provide a kind of method predicting full oil reservoir producing region type, in order to improve the degree of accuracy of full oil reservoir producing region type prediction, the method comprises:
According to yield datas having exploited producing well all in full oil reservoir, determine the production well yield criteria for classifying;
According to test pressure data of having exploited producing well all in full oil reservoir, determine all reservoir pressures exploited when producing well is gone into operation, according to all reservoir pressures exploited when producing well is gone into operation, determine the pressure criteria for classifying of producing well;
Based on the output criteria for classifying and the pressure criteria for classifying, exploit the yield data of producing well and reservoir pressure when going into operation according to each, determined each well type of having exploited producing well; Well type represents Yield Grade and the reservoir pressure grade of producing well;
Draw the well type of producing well and the graph of a relation of geologic characteristic parameter α;
According to graph of a relation, predict the type in full oil reservoir producing region.
In one embodiment, yield data comprises: individual well initil output, average output, tired to produce and production decline rate one of them or combination in any.
In one embodiment, geologic characteristic parameter α comprises: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.
In one embodiment, the drafting well type of producing well and the graph of a relation of geologic characteristic parameter α comprise:
Drafting reservoir pressure is greater than first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation of geologic characteristic parameter α.
In one embodiment, based on the output criteria for classifying and the pressure criteria for classifying, exploit the yield data of producing well and reservoir pressure when going into operation according to each, determined each well type of having exploited producing well, comprising:
Based on the output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
When going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
The embodiment of the present invention additionally provides a kind of device predicting full oil reservoir producing region type, and in order to improve the degree of accuracy of full oil reservoir producing region type prediction, this device comprises:
Output criteria for classifying determination module, for according to yield datas having exploited producing well all in full oil reservoir, determines the production well yield criteria for classifying;
Pressure criteria for classifying determination module, for according to test pressure data of having exploited producing well all in full oil reservoir, determine all reservoir pressures exploited when producing well is gone into operation, according to all reservoir pressures exploited when producing well is gone into operation, determine the pressure criteria for classifying of producing well;
Well determination type module, for based on the output criteria for classifying and the pressure criteria for classifying, has exploited the yield data of producing well and reservoir pressure when going into operation according to each, has determined each well type of having exploited producing well; Well type represents Yield Grade and the reservoir pressure grade of producing well;
Graph of a relation drafting module, for the graph of a relation of the well type and geologic characteristic parameter α of drawing producing well;
Producing region type prediction module, for according to graph of a relation, predicts the type in full oil reservoir producing region.
In one embodiment, yield data comprises: individual well initil output, average output, tired to produce and production decline rate one of them or combination in any.
In one embodiment, geologic characteristic parameter α comprises: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.
In one embodiment, graph of a relation drafting module specifically for:
Drafting reservoir pressure is greater than first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation of geologic characteristic parameter α.
In one embodiment, well determination type module, comprising:
The graph of a relation drafting module of reservoir pressure when yield data and operation, for based on the output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
Well type determination module, during for going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
Predict compared with the technical scheme of full oil reservoir producing region type with only adopting static data (intrinsic geologic characteristic parameter α in such as stratum etc.) in prior art, the embodiment of the present invention is according to the output criteria for classifying and the pressure criteria for classifying, and reservoir pressure when having exploited the yield data of producing well in each full oil reservoir and gone into operation, determine each well type of having exploited producing well, draw the graph of a relation of well type and geologic characteristic parameter α, again according to the relation of well type and geologic characteristic parameter α, carry out division and the prediction in the dissimilar producing region of full oil reservoir, so just set up the contact between hydrocarbon-bearing pool static state (geologic characteristic parameter α etc.) and development behavior (consider some exploited the dynamic datas such as output when producing well well is gone into operation), be a kind of being association of activity and inertia and carry out the technical scheme of full oil reservoir producing region type prediction.By the real data checking later to full oil reservoir whole development, find that in the type of producing region, actual well yield conforms to the output of prediction.Therefore, apply the prediction of technical scheme provided by the invention to full oil reservoir producing region type, improve the degree of accuracy of full oil reservoir producing region type prediction, directive significance is had more to the formulation etc. of actual production well site deployment and development strategy.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the method predicting full oil reservoir producing region type in the embodiment of the present invention;
Fig. 2 is that in the embodiment of the present invention, the initial daily oil production of individual well and individual well are gone into operation initial stage pressure dependence figure;
Fig. 3 is the graph of a relation of all producing wells maximum perforation sand thickness, the total perforation thickness of individual well and well type in the embodiment of the present invention;
Fig. 4 is that in the embodiment of the present invention, reservoir pressure is greater than the graph of a relation that all producing wells of first threshold and output is greater than the maximum perforation sand thickness of the producing well of Second Threshold, the total perforation thickness of individual well and well type;
Fig. 5 is that in the embodiment of the present invention, producing well bores the single sand thickness of chance and corresponding mean permeability graph of a relation;
Fig. 6 is certain oil reservoir high, medium and low producing region division result schematic diagram in the embodiment of the present invention;
Fig. 7 is the structured flowchart of the device predicting full oil reservoir producing region type in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and illustrating for explaining the present invention, but not as a limitation of the invention.
At present, the method for domestic and international predicting hydrocarbon reservoirs producing region type mainly comprises and carries out predicting and predicting etc. according to hydrocarbon-bearing pool flow unit according to hydrocarbon-bearing pool Reservoir type.Various method all only adopts static data to carry out a point Division to oil reservoir, thus carry out classification development, but various division methods does not all set up contacting between hydrocarbon-bearing pool static state and development behavior, the production capacity height estimate hydrocarbon-bearing pool regional or the size of capacity can not have concept intuitively.After oil reservoir whole development, can not be correct instruct development decision-making and deployment.
For the producing well of hydrocarbon-bearing pool, known by Darcy's equation, well capacity is by the impact of the parameters such as reservoir properties, fluid properties, drainage radius, reservoir thickness.For a certain specific hydrocarbon-bearing pool, if when hydrocarbon-bearing pool Well Pattern And Spacing is certain, reservoir fluid character is consistent, well capacity difference is mainly by the impact of the thickness transitivity parameter of reservoir.Therefore, by studying a certain specific hydrocarbon-bearing pool, well productivity height and the relation of reservoir parameter can be set up, thus carry out the division in hydrocarbon-bearing pool producing region.According to above-mentioned analysis, the present invention proposes a kind of relation by setting up between oil well output dynamic cataloging and well geological property parameter, predicting the new method of full oil reservoir producing region type, be a kind of being association of activity and inertia and carry out the new method of dissimilar producing region division.Describe in detail explanation below.
Fig. 1 is the schematic flow sheet of the method predicting full oil reservoir producing region type in the embodiment of the present invention, and as shown in Figure 1, the method comprises:
Step 101: according to yield datas having exploited producing well all in full oil reservoir, determine the production well yield criteria for classifying;
Step 102: according to test pressure data of having exploited producing well all in full oil reservoir, determines all reservoir pressures exploited when producing well is gone into operation, and according to all reservoir pressures exploited when producing well is gone into operation, determines the pressure criteria for classifying of producing well;
Step 103: based on the described output criteria for classifying and the pressure criteria for classifying, has exploited the yield data of producing well and reservoir pressure when going into operation according to each, has determined each well type of having exploited producing well; Described well type represents Yield Grade and the reservoir pressure grade of producing well;
Step 104: draw the well type of producing well and the graph of a relation of geologic characteristic parameter α;
Step 105: according to graph of a relation, predicts the type in full oil reservoir producing region.
Predict compared with the technical scheme of full oil reservoir producing region type with only adopting static data (intrinsic geologic characteristic parameter α in such as stratum etc.) in prior art, the embodiment of the present invention is according to the output criteria for classifying and the pressure criteria for classifying, and reservoir pressure when having exploited the yield data of producing well in each full oil reservoir and gone into operation, determine each well type of having exploited producing well, draw the graph of a relation of well type and geologic characteristic parameter α, again according to the relation of well type and geologic characteristic parameter α, carry out division and the prediction in the dissimilar producing region of full oil reservoir, so just set up the contact between hydrocarbon-bearing pool static state (geologic characteristic parameter α etc.) and development behavior (consider some exploited the dynamic datas such as output when producing well well is gone into operation), be a kind of being association of activity and inertia and carry out the technical scheme of full oil reservoir producing region type prediction.By the real data checking later to full oil reservoir whole development, find that in the type of producing region, actual well yield conforms to the output of prediction.Therefore, apply the prediction of technical scheme provided by the invention to full oil reservoir producing region type, improve the degree of accuracy of full oil reservoir producing region type prediction, directive significance is had more to the formulation etc. of actual production well site deployment and development strategy.
In one embodiment, the yield data mentioned in above-mentioned steps 101 can comprise: individual well initil output, average output, tired to produce and production decline rate one of them or combination in any.As shown in Figure 2, the yield data in the embodiment of the present invention adopts individual well initil output (the initial daily oil production of the individual well as shown in Fig. 2 ordinate) to be described.
In addition, the triangle in Fig. 2 and circle wait producing wells different in the full oil reservoir of graphical representation.
During concrete enforcement, in above-mentioned steps 101, by analyzing the yield data of producing wells all in oil gas field (to the multi-proxy investigations such as individual well initil output, average output, tired product, production decline rate), determine the dissimilar well yield criteria for classifying, according to per-well production data, all wells are divided into the well of respective type, after analyzing based on the yield data of this step to producing wells all in full oil reservoir, can determine that every mouthful of producing well specifically belongs to stripper well, middle product well or prolific well.
During concrete enforcement, in above-mentioned steps 102, based on the test pressure data of individual well, determine reservoir pressure when individual well is gone into operation.If individual well does not have original pressure test data, the pressure testing data of well similar time around can be used.When going into operation to individual well, reservoir pressure carries out statistical study, determines high pressure, the low pressure criteria for classifying, and all wells are divided into strong well, low pressure well two class well according to the pressure condition of going into operation.The concrete meaning of step 102 of giving an example: produce well in low pressure, if this well pressure obviously raises and becomes strong well after later stage water filling, then this well production rate may become prolific well, instead of middle product well.Therefore, pressure also has vital impact to output height.By step 102, the method of the producing region type of the full oil reservoir of the prediction that the embodiment of the present invention provides, on the basis of step 101, also consider pressure data during concrete operation, which improves the degree of accuracy of the producing region type prediction of full oil reservoir, directive significance is had more to the formulation etc. of follow-up actual production well site deployment, development strategy.
The pressure criteria for classifying mentioned in the embodiment of the present invention is: reservoir pressure determination producing well when going into operation according to individual well belongs to the criteria for classifying of strong well or low pressure well.How concrete high pressure and low pressure define, fixed according to real work.
During concrete enforcement, in above-mentioned steps 103, the criteria for classifying in integrating step 101 and step 102 and result, be divided into the large class of well two of the well of high pressure different output type, the dissimilar output of low pressure by all wells.The well type mentioned in above-mentioned steps 103 can comprise: high yield strong well, high yield low pressure well, middle product strong well, middle product low pressure well, low yield strong well and low production and low pressure well.
In one embodiment, in above-mentioned steps 103, based on the described output criteria for classifying and the pressure criteria for classifying, exploit the yield data of producing well and reservoir pressure when going into operation according to each, determined each well type of having exploited producing well, can comprise:
Based on the described output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation (as shown in Figure 2) of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
When going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
During concrete enforcement, in above-mentioned steps 104, analyze dissimilar well geologic feature, thus determine the main controlling geological factors affecting well production rate height.The graph of a relation drawing dissimilar well and geologic characteristic parameter α can be attempted, as draw dissimilar well and well perforation thickness, well bore meet reservoir thickness, well maximum perforation sand thickness, well perforation interval mean permeability, well perforation interval permeability capacity, well bore and meet the isoparametric graph of a relation of reservoir formation coefficient (such as: as shown in Figure 3).
In one embodiment, in above-mentioned steps 104, geologic characteristic parameter α can comprise: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.In the embodiment of the present invention, have employed well perforation thickness (the maximum perforation sand thickness of individual well as shown in Figure 3 and the total perforation thickness of individual well) and be described.
During concrete enforcement, in one embodiment, draw the well type of producing well and the graph of a relation of geologic characteristic parameter α can comprise: draw reservoir pressure and be greater than all producing wells of first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation of geologic characteristic parameter α, be after the data of producing well and low-voltage and low-yield well in low pressure are rejected, then draw the graph of a relation of well type and geologic characteristic parameter α.
Because the data representativeness of producing well and low-voltage and low-yield well in low pressure is poor, analyze again after can rejecting.Be illustrated in figure 4 after producing well and low-voltage and low-yield well in rejecting low pressure, the well type of drafting and the graph of a relation of geologic characteristic parameter α.Clearly can find out that well type and geologic characteristic parameter α exist relation clearly by this figure, be convenient to predict the type in full oil reservoir producing region, improve the degree of accuracy of the producing region type prediction of full oil reservoir.Above-mentioned first threshold and Second Threshold are determined according to real work situation.
During concrete enforcement, in above-mentioned steps 105, according to described graph of a relation, in conjunction with drilling well result of log interpretation all in full oil reservoir, the full understanding such as oil reservoir sedimentary facies, reservoir thickness distribution, predict the type in full oil reservoir producing region, also being by analyzing different graph of a relation, namely according to the relation between the well type set up and well geological property parameter, carrying out the accurate division of full oil reservoir producing region type.To be correlated with geology attribute evaluation result and deposit equal understanding based on the relation set up, full oil reservoir, dissimilar producing region division (prediction producing region type) is carried out to full oil reservoir.
Based on same inventive concept, additionally provide a kind of device predicting full oil reservoir producing region type in the embodiment of the present invention, as described in the following examples.Similar to the method for prediction full oil reservoir producing region type owing to predicting the principle that the device of full oil reservoir producing region type is dealt with problems, therefore predict that the enforcement of the device of full oil reservoir producing region type see the enforcement of the method for prediction full oil reservoir producing region type, can repeat part and repeat no more.Following used, term " unit " or " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.
Fig. 7 is the structured flowchart of the device predicting full oil reservoir producing region type in the embodiment of the present invention, and as shown in Figure 7, this device comprises:
Output criteria for classifying determination module 10, for according to yield datas having exploited producing well all in full oil reservoir, determines the production well yield criteria for classifying;
Pressure criteria for classifying determination module 20, for according to test pressure data of having exploited producing well all in full oil reservoir, determine all reservoir pressures exploited when producing well is gone into operation, according to all reservoir pressures exploited when producing well is gone into operation, determine the pressure criteria for classifying of producing well;
Well determination type module 30, for based on the described output criteria for classifying and the pressure criteria for classifying, has exploited the yield data of producing well and reservoir pressure when going into operation according to each, has determined each well type of having exploited producing well; Well type represents Yield Grade and the reservoir pressure grade of producing well;
Graph of a relation drafting module 40, for the graph of a relation of the well type and geologic characteristic parameter α of drawing producing well;
Producing region type prediction module 50, for according to graph of a relation, predicts the type in full oil reservoir producing region.
In one embodiment, predicted output data comprises: individual well initil output, average output, tired to produce and production decline rate one of them or combination in any.
In one embodiment, geologic characteristic parameter α comprises: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.
In one embodiment, well determination type module 30, comprising:
The graph of a relation drafting module of reservoir pressure when yield data and operation, for based on the described output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
Well type determination module, during for going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
In one embodiment, graph of a relation drafting module 40 specifically for:
Drafting reservoir pressure is greater than all producing wells of first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation 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 realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the embodiment of the present invention is not restricted to any specific hardware and software combination.
Be described with example more below, so that understand how to implement the present invention.
For certain exhaustion formula exploitation oil reservoir, in conjunction with all per-well production data of this oil reservoir and pressure data, well is divided into six classes, is respectively high yield strong well, high yield low pressure well, middle product strong well, middle product low pressure well, low yield strong well and low production and low pressure well six class well.Be illustrated in figure 2 the initial daily oil production of this oil reservoir individual well (being yield data) and the graph of a relation of initial stage pressure when operation (be reservoir pressure) of going into operation, equally also can draw the relation of other yield datas and pressure, thus finally comprehensive well type to be divided, thus carry out the prediction of producing region type.
In conjunction with static understanding, classification analysis is carried out to prolific well, middle product well and stripper well, confirms the geologic feature of dissimilar well.Obviously thicker, total perforation thickness is thick for prolific well single perforation sand body; Middle product well single perforation sand thickness is medium; Less, the total perforation thickness of stripper well single perforation sand thickness is also less.
As shown in Figure 3, the relation of well classification (being well type) and individual well maximum perforation sand thickness and the total perforation thickness of individual well is depicted.As seen from Figure 3, well type and individual well maximum perforation sand thickness and the total perforation thickness of individual well have certain relation, but relation unintelligible.
Known by analyzing, the pressure of well has impact to well yield.For low pressure prolific well, if pressure is high when well is gone into operation, well yield should be higher, still belongs to prolific well.Produce well in low pressure, if this well pressure obviously raises and becomes strong well after later stage water filling, then this well production rate may become prolific well, instead of middle product well.Equally, for low-voltage and low-yield well, if well pressure is higher when going into operation, then the well of this position may become prolific well or middle product well.Therefore, the data representativeness of producing well and low-voltage and low-yield well in low pressure is poor, analyzes after can rejecting again.
Be illustrated in figure 4 the graph of a relation of well type and the geologic characteristic parameter α drawn after producing well and low-voltage and low-yield well data in rejecting low pressure.Can find out that well type and geologic characteristic parameter α exist relation clearly clearly by this Fig. 4, the geologic characteristic parameter α criteria for classifying of well type can be set up.The prolific well criteria for classifying is: individual well maximum perforation sand thickness >10m or the total perforation sand thickness >22m of individual well; The middle product well criteria for classifying is: 4m≤individual well maximum perforation sand thickness≤10m and the total perforation sand thickness≤22m of individual well; The stripper well criteria for classifying is: individual well maximum perforation sand thickness <4m and the total perforation sand thickness≤22m of individual well.
Although do not comprise reservoir permeability parameter here in well classification of type, in fact the single sand thickness of reservoir implies reservoir properties.Figure 5 shows that well bores and meet the single sand thickness of sand body and the graph of a relation of single sand body mean permeability, as shown in Figure 5, single sand thickness is larger, and the mean permeability of corresponding single sand body is higher and variation range is less; Single sand thickness is less, and the mean permeability that single sand body is corresponding is on the low side, and variation range is larger.As can be seen here, the maximum single sand body perforation thickness of individual well is larger, and corresponding reservoir properties is higher, and output is higher.The producing region that the well type of Fig. 4 and the relation of geologic parameter can be used for carrying out full oil reservoir divides.
In addition, the rhombus in Fig. 5 and the circular sedimentary facies waiting the different sand body of graphical representation.
Based on the geologic characteristic parameter α criteria for classifying and this oil reservoir different layers sand thickness spread data volume of the well type set up, this oil reservoir has been carried out to the division in the high, medium and low three class producing regions of the whole district, division result figure as shown in Figure 6.The implication of this figure is for after oil reservoir full-scale waterflood, and high, medium and low producing region represents the new well capacity of diverse location.Because this oil reservoir south reservoir is good, and high yield producing region scope is large, northern mainly based in, stripper well.This map is familiar with clearly to decision maker, and oil reservoir newly drilled well and water filling are based on preferential development south, and the north tastes the exploitation of examination property in high yield wellblock, low producing region in progressively redeveloping after understanding.This map gives the new deployment of well well location, the formulation of development strategy provides guidance.
The present invention abroad certain large-scale oil reservoir development plan establishment in apply, by setting up the division in the high, medium and low producing region of the full oil reservoir of the relational implementation of well type and geological property, the actual measurement Production development of newly drilled well demonstrates the reliability of result.Beneficial effect of the present invention is, method of the present invention adopts the producing region type of method to full oil reservoir of being association of activity and inertia to predict, prediction accuracy is high, has more directive significance to the formulation etc. of actual production well site deployment, development strategy.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. predict a method for full oil reservoir producing region type, it is characterized in that, comprising:
According to yield datas having exploited producing well all in full oil reservoir, determine the production well yield criteria for classifying;
According to test pressure data of having exploited producing well all in full oil reservoir, determine all reservoir pressures exploited when producing well is gone into operation, according to all reservoir pressures exploited when producing well is gone into operation, determine the pressure criteria for classifying of producing well;
Based on the described output criteria for classifying and the pressure criteria for classifying, exploit the yield data of producing well and reservoir pressure when going into operation according to each, determined each well type of having exploited producing well; Described well type represents Yield Grade and the reservoir pressure grade of producing well;
Draw the well type of producing well and the graph of a relation of geologic characteristic parameter α;
According to described graph of a relation, predict the type in full oil reservoir producing region.
2. the method for prediction as claimed in claim 1 full oil reservoir producing region type, it is characterized in that, described yield data comprises: individual well initil output, average output, tiredly to produce and production decline rate one of them or combination in any.
3. the method for prediction as claimed in claim 1 full oil reservoir producing region type, it is characterized in that, described geologic characteristic parameter α comprises: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.
4. the method for prediction as claimed in claim 1 full oil reservoir producing region type, is characterized in that, the drafting well type of producing well and the graph of a relation of geologic characteristic parameter α comprise:
Drafting reservoir pressure is greater than first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation of geologic characteristic parameter α.
5. the method for prediction as claimed in claim 1 full oil reservoir producing region type, it is characterized in that, based on the described output criteria for classifying and the pressure criteria for classifying, exploited the yield data of producing well and reservoir pressure when going into operation according to each, determine each well type of having exploited producing well, comprising:
Based on the described output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
When going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
6. predict a device for full oil reservoir producing region type, it is characterized in that, comprising:
Output criteria for classifying determination module, for according to yield datas having exploited producing well all in full oil reservoir, determines the production well yield criteria for classifying;
Pressure criteria for classifying determination module, for according to test pressure data of having exploited producing well all in full oil reservoir, determine all reservoir pressures exploited when producing well is gone into operation, according to all reservoir pressures exploited when producing well is gone into operation, determine the pressure criteria for classifying of producing well;
Well determination type module, for based on the described output criteria for classifying and the pressure criteria for classifying, has exploited the yield data of producing well and reservoir pressure when going into operation according to each, has determined each well type of having exploited producing well; Described well type represents Yield Grade and the reservoir pressure grade of producing well;
Graph of a relation drafting module, for the graph of a relation of the well type and geologic characteristic parameter α of drawing producing well;
Producing region type prediction module, for according to described graph of a relation, predicts the type in full oil reservoir producing region.
7. the device of prediction as claimed in claim 6 full oil reservoir producing region type, it is characterized in that, described yield data comprises: individual well initil output, average output, tiredly to produce and production decline rate one of them or combination in any.
8. the device of prediction as claimed in claim 6 full oil reservoir producing region type, it is characterized in that, described geologic characteristic parameter α comprises: well perforation thickness, well bore meets reservoir thickness, the maximum perforation sand thickness of well, well perforation interval mean permeability, well perforation interval permeability capacity and well and bore and meet reservoir formation coefficient one of them or combination in any.
9. the device of prediction as claimed in claim 6 full oil reservoir producing region type, is characterized in that, described graph of a relation drafting module specifically for:
Drafting reservoir pressure is greater than first threshold and output is greater than the well type of the producing well of Second Threshold and the graph of a relation of geologic characteristic parameter α.
10. the device of prediction as claimed in claim 6 full oil reservoir producing region type, it is characterized in that, described well determination type module, comprising:
The graph of a relation drafting module of reservoir pressure when yield data and operation, for based on the described output criteria for classifying and the pressure criteria for classifying, the yield data having exploited producing well according to each and reservoir pressure when going into operation, draw the graph of a relation of all reservoir pressures when having exploited the yield data of producing well and gone into operation;
Well type determination module, during for going into operation according to yield data and individual well, the graph of a relation of reservoir pressure, determines the well type of all producing wells.
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