CN108180008A - Forecasting Methodology, device, electronic equipment and the storage medium of recoverable reserves - Google Patents
Forecasting Methodology, device, electronic equipment and the storage medium of recoverable reserves Download PDFInfo
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Abstract
The present invention provides a kind of Forecasting Methodology of recoverable reserves, device, electronic equipment and storage mediums, are related to oil-gas exploration technical field.The Forecasting Methodology of the recoverable reserves includes：The relation curve of arithmetic square root that the daily output of plan pressure difference and shale gas well to be measured based on shale gas well to be measured is multiplied by the time obtains the plan flowing bottomhole pressure (FBHP) of shale gas well to be measured, wherein, intend pressure difference as pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP)；Tired production when flowing bottomhole pressure (FBHP) reaches defeated pressure outside shale gas well reality to be measured is obtained based on the daily output for intending flowing bottomhole pressure (FBHP) and pre-stored shale gas well to be measured, tires out production as prediction stable production period；The first ratio based on shale gas-bearing formation adsorbed gas and free gas, stable production period tire out production and tire out the second ratio of production with decline period, and the first ratio relationship equal with the second ratio and prediction stable production period tire out production, obtain prediction decline period and tire out production；Using predict stable production period tire out production with predict decline period tire out production and as predict recoverable reserves.This method can preferably predict recoverable reserves.
Description
Technical field
The present invention relates to field of computer technology, in particular to a kind of Forecasting Methodology of recoverable reserves, device electronics
Equipment and storage medium.
Background technology
At present, domestic is foundation and reference from productivity model analysis mostly for the prediction of shale gas technologically recoverable reserves
Two aspects of derivation of empirical formula are started with, and generally predict shale gas well using two methods of analytic method and numerical simulation
Production law, so as to evaluate recoverable reserves.And the domestic Forecasting Methodology used is only from theory deduction, the derivation of equation, numerical value
The means such as simulation predict shale gas technologically recoverable reserves, while a large amount of theoretical research result does not consider geologic feature not
The influence of same, fracturing reform scale difference and shale gas absorption parsing to the recoverable reserves of different phase, prediction result and reality
Situation deviation is larger.
Invention content
In view of this, an embodiment of the present invention provides a kind of Forecasting Methodology of recoverable reserves, device, electronic equipment and storages
Medium.
To achieve these goals, the technical solution adopted by the present invention is as follows：
In a first aspect, an embodiment of the present invention provides a kind of Forecasting Methodology of recoverable reserves, the method includes：Based on treating
The relation curve of arithmetic square root that the daily output of plan pressure difference and the shale gas well to be measured for surveying shale gas well is multiplied by the time obtains
The plan flowing bottomhole pressure (FBHP) of the shale gas well to be measured is taken, wherein, the pressure difference of intending is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP)；Base
Reach described in the daily output of the plan flowing bottomhole pressure (FBHP) and the pre-stored shale gas well to be measured acquisition flowing bottomhole pressure (FBHP) to treat
Tired production during defeated pressure outside shale gas well reality is surveyed, the prediction stable production period as the shale gas well to be measured tires out production；Based on shale
First ratio of gas-bearing formation adsorbed gas and free gas, stable production period tire out production and tire out the second ratio of production, the first ratio and second with decline period
The equal relationship of ratio and the prediction stable production period tire out production, and the prediction decline period for obtaining the shale gas well to be measured tires out production；It will
The prediction stable production period tires out production and tires out production and as the shale gas well to be measured prediction recoverable reserves with the prediction decline period.
Second aspect, an embodiment of the present invention provides a kind of prediction meanss of recoverable reserves, described device includes intending shaft bottom
Miscarriage pressure acquisition module, stationary phase tire out acquisition module, decline period tires out production acquisition module and recoverable reserves acquisition module, wherein,
The flowing bottomhole pressure (FBHP) acquisition module of intending is for the daily output for intending pressure difference and the shale gas well to be measured based on shale gas well to be measured
The relation curve for being multiplied by the arithmetic square root of time obtains the plan flowing bottomhole pressure (FBHP) of the shale gas well to be measured, wherein, it is described to intend pressure
Difference is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP)；The stationary phase tire out production acquisition module be used for based on it is described plan flowing bottomhole pressure (FBHP) with
And the daily output of the pre-stored shale gas well to be measured obtains flowing bottomhole pressure (FBHP) and reaches defeated outside the shale gas well reality to be measured
Tired production during pressure, the prediction stable production period as the shale gas well to be measured tire out production；The decline period tires out production acquisition module and is used for
The first ratio based on shale gas-bearing formation adsorbed gas and free gas, stable production period tire out production and tire out the second ratio of production with decline period, and first compares
The value relationship equal with the second ratio and the prediction stable production period tire out production, obtain the prediction decline period of the shale gas well to be measured
Tired production；The recoverable reserves acquisition module be used for using it is described prediction stable production period tire out production with it is described prediction decline period tire out production and as
The prediction recoverable reserves of the shale gas well to be measured.
The third aspect, an embodiment of the present invention provides a kind of electronic equipment, the electronic equipment includes memory and processing
Device, the memory are stored with computer instruction, when the computer instruction is read and performed by the processor, make described
Processor performs the Forecasting Methodology for the recoverable reserves that above-mentioned first aspect provides.
Fourth aspect is stored with computer an embodiment of the present invention provides a kind of storage medium, in the storage medium and refers to
It enables, wherein, the computer instruction performs the prediction side for the recoverable reserves that above-mentioned first aspect provides when being read and running
Method.
Forecasting Methodology, device, electronic equipment and the storage medium of recoverable reserves provided in an embodiment of the present invention, by being based on
The relation curve for the arithmetic square root that the plan pressure difference of shale gas well to be measured is multiplied by the time with the daily output of shale gas well to be measured obtains
The plan flowing bottomhole pressure (FBHP) of shale gas well to be measured, wherein, intend pressure difference as pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP), be then based on intending well
Underflow is pressed and the daily output of pre-stored shale gas well to be measured obtains flowing bottomhole pressure (FBHP) and reaches defeated outside shale gas well reality to be measured
Tired production during pressure, the prediction stable production period as shale gas well to be measured tire out production, then based on shale gas-bearing formation adsorbed gas and free gas
First ratio, stable production period tire out production and decline period and tire out the second ratio of production, the first ratio relationship equal with the second ratio and in advance
It surveys stable production period and tires out production, the prediction decline period for obtaining shale gas well to be measured tires out production, is finally tired out production prediction stable production period and successively decreased with prediction
Phase tires out production and as shale gas well to be measured prediction recoverable reserves.This can the amount of adopting Forecasting Methodology consider different phase can
The influence of reserves is adopted, the prediction for making recoverable reserves to shale gas well to be measured is more accurate, solves of the prior art to adopt storage
There is large error in the recoverable reserves of the Forecasting Methodology prediction of amount.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work shall fall within the protection scope of the present invention.
Fig. 1 shows the block diagram of electronic equipment provided in an embodiment of the present invention；
Fig. 2 shows the flow charts of the Forecasting Methodology of recoverable reserves provided in an embodiment of the present invention；
Fig. 3 shows the partial process view of the Forecasting Methodology of recoverable reserves provided in an embodiment of the present invention；
Fig. 4 shows material balance time provided in an embodiment of the present invention and the schematic diagram of the curve of Regularization yield；
Fig. 5 shows that plan pressure difference provided in an embodiment of the present invention and the relationship of arithmetic square root that the daily output is multiplied by the time are bent
The schematic diagram of line；
Fig. 6 shows the fitted figure of the plan flowing bottomhole pressure (FBHP) of shale gas well provided in an embodiment of the present invention；
Fig. 7 shows the module map of the prediction meanss of recoverable reserves provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be configured to arrange and design with a variety of different herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Fig. 1 shows a kind of structure diagram that can be applied to the electronic equipment in the embodiment of the present invention.It is as shown in Figure 1, electric
Sub- equipment 100 includes memory 102, storage control 104, one or more (one is only shown in figure) processors 106, peripheral hardware
Interface 108, radio-frequency module 110, audio-frequency module 112, display unit 114 etc..These components by one or more communication bus/
Signal wire 116 mutually communicates.
Memory 102 can be used for storage software program and module, such as the prediction of the recoverable reserves in the embodiment of the present invention
Corresponding program instruction/the module of method and device, processor 106 by operation be stored in the software program in memory 102 with
And module, so as to perform various functions application and data processing, such as prediction side of recoverable reserves provided in an embodiment of the present invention
Method.
Memory 102 may include high speed random access memory, may also include nonvolatile memory, such as one or more magnetic
Property storage device, flash memory or other non-volatile solid state memories.Processor 106 and other possible components are to storage
The access of device 102 can carry out under the control of storage control 104.
Various input/output devices are coupled to processor 106 and memory 102 by Peripheral Interface 108.In some implementations
In example, Peripheral Interface 108, processor 106 and storage control 104 can be realized in one single chip.In some other reality
In example, they can be realized by independent chip respectively.
Radio-frequency module 110 is used to receive and transmit electromagnetic wave, realizes the mutual conversion of electromagnetic wave and electric signal, thus with
Communication network or other equipment are communicated.
Audio-frequency module 112 provides a user audio interface, may include that one or more microphones, one or more raises
Sound device and voicefrequency circuit.
Display unit 114 provides a display interface between electronic equipment 100 and user.Specifically, display unit 114
Video output is shown to user, and the content of these videos output may include word, figure, video and its arbitrary combination.
It is appreciated that structure shown in FIG. 1 is only to illustrate, electronic equipment 100 may also include it is more than shown in Fig. 1 or
Less component or with the configuration different from shown in Fig. 1.Each component shown in Fig. 1 may be used hardware, software or its
Combination is realized.
First embodiment
The flow chart of the Forecasting Methodology of recoverable reserves provided in an embodiment of the present invention as shown in Figure 2.Fig. 2 is referred to, it should
The Forecasting Methodology of recoverable reserves includes：
Step S110：Plan pressure difference and the daily output of the shale gas well to be measured based on shale gas well to be measured are multiplied by the time
The relation curve of arithmetic square root obtains the plan flowing bottomhole pressure (FBHP) of the shale gas well to be measured, wherein, the plan pressure difference is intends stratum
Pressure and the difference for intending flowing bottomhole pressure (FBHP).
In embodiments of the present invention, when the stable production period for measuring shale gas well to be measured tiring out production, it can first judge the page to be measured
Rock gas well stably generates whether the stage is the unstable linear flow stage, so that in the steady production stage of the shale gas well to be measured
During for the unstable linear flow stage, unstable linear flow factor is considered, so that the stable production period of prediction tires out production accurately.
Therefore, in embodiments of the present invention, before step S110, the Forecasting Methodology of the recoverable reserves can also include：
Judge whether shale gas well production phase stable production period to be measured is the unstable linear flow stage；When to be, obtain
The plan pressure difference is taken to be multiplied by the relation curve of the arithmetic square root of time with the daily output.
It is understood that whether it is to sentence in the unstable linear flow stage to shale gas well production phase stable production period to be measured
It is disconnected, the prediction of corresponding tired production during so as to determine whether to perform the unstable linear flow stage according to result.
In embodiments of the present invention, Fig. 3 is referred to, judges whether shale gas well production phase stable production period to be measured is not
In the regulated linear stream stage, it can include：
Step S101：The daily output based on the shale gas well to be measured, tired production and flowing bottomhole pressure (FBHP), are taken at double-log seat
Regularization yield and the relation curve of material balance time in mark system, wherein, the Regularization yield is the daily output and pressure
The ratio of difference, the material balance time are ratio of the tired production with the daily output of the tired production corresponding time.
In embodiments of the present invention, the daily output of shale gas well to be measured, tired production and flowing bottomhole pressure (FBHP) can be user's inputs
Data or from other-end equipment obtain data.Certainly, the daily output of shale gas well to be measured, tired production and well
The acquisition modes of underflow pressure are not intended as limiting in embodiments of the present invention.
In embodiments of the present invention, the daily output of shale gas well to be measured, tired production and flowing bottomhole pressure (FBHP) can be the page to be measured
Measured data when rock gas well is gone into operation.
In embodiments of the present invention, above-mentioned pressure differential is bottom pressure and the difference of flowing bottomhole pressure (FBHP).Regularization yield is
The one actual measurement stream corresponding daily output of pressure point divided by the corresponding pressure differential of actual measurement stream pressure point by daily corresponding tired yield divided by are somebody's turn to do
Day corresponding daily output, can obtain the material balance time.
It is thus possible to based on above-mentioned Regularization yield and material balance time, relation curve between the two is established,
Specifically can be in log-log coordinate system, using ordinate as Regularization yield, abscissa is the material balance time, can be advised
Change curve of the integralization yield about the material balance time.
Step S102：Judge the oblique of Regularization yield Eigenvector corresponding with the relation curve of material balance time
Whether rate is default slope.
After change curve of the Regularization yield about the material balance time is obtained, it may be determined that the characteristic curve of the curve
Section.Then, the slope of Regularization yield Eigenvector corresponding with the relation curve of material balance time is obtained.
In embodiments of the present invention, default slope can be -1/2.Certainly, the concrete numerical value of slope is preset of the invention real
It applies and is not intended as limiting in example.
It is illustrated in figure 4 a material balance time and the schematic diagram of the curve of Regularization yield, corresponding Eigenvector
Slope be -1/2.
It is thus possible to judging the slope of Regularization yield Eigenvector corresponding with the relation curve of material balance time is
No is default slope, to determine whether production phase stable production period of the shale gas well to be measured is unstable linear according to judging result
The stream stage.
Step S103：When to be, then it is unstable linear flow to judge shale gas well production phase stable production period to be measured
Stage；When being no, then it is not the unstable linear flow stage to judge shale gas well production phase stable production period to be measured.
It is understood that when being determined as that Regularization yield is corresponding with the relation curve of material balance time in step S102
The slope of Eigenvector when being default slope, then it is unstable linear flow to judge shale gas well production phase stable production period to be measured
Stage；When the slope for being determined as Regularization yield Eigenvector corresponding with the relation curve of material balance time in step S102
When not for default slope, then it is not the unstable linear flow stage to judge shale gas well production phase stable production period to be measured.
When determining shale gas well production phase stable production period to be measured as the unstable linear flow stage, then the plan is obtained
Pressure difference is multiplied by the relation curve of the arithmetic square root of time with the daily output, for subsequently determining to intend flowing bottomhole pressure (FBHP).
In embodiments of the present invention, the relationship song intended pressure difference and the arithmetic square root of time is multiplied by with the daily output is obtained
Line can include：
Based on default Darcy's equation, default continuity equation, pre-set gas compression equation, default Number of Fractures and total base
The preset exposure area of matter and fracture surface obtains the relation curve for intending the arithmetic square root that pressure difference is multiplied by the time with the daily output,
In, the pressure difference of intending is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP).
In embodiments of the present invention, default Darcy's equation can be：Continuity equation can be：Gas compression equation can be：Pv=znRT.
Based on above-mentioned default Darcy's equation, default continuity equation and pre-set gas compression equation, can obtain：
For being segmented stress level well, it is i.e. default as nf by Number of Fractures after massive hydraulic fracturing to set the shale gas well to be measured
Number of Fractures.The total matrix of the shale gas well to be measured Jing Guo pressure break is set with fracture surface contact area as A, i.e. preset exposure face
Product.It is hereby achieved that：
Wherein, m is set asIt can obtain：
Wherein, m (pi) represent pseudo-reservoir pressure, MPa2/mPa·s；m
(pwf) represent to intend flowing bottomhole pressure (FBHP), MPa2/mPa·s；QgExpression day gas yield, 104m3/d；xiRepresent fracture half-length, m；T represents ground
Layer temperature, ° R；ctRepresent system compressibility, 1/MPa；K represents matrix permeability after pressure break, md；T represents production time, d.
So as to obtain the relation curve for intending the arithmetic square root that pressure difference is multiplied by the time with the daily output.It is illustrated in figure 5 and enumerates
Plan pressure difference and the daily output be multiplied by the time arithmetic square root relation curve schematic diagram.
Therefore, according toIt can obtain
It is thus possible to according toPredict the plan flowing bottomhole pressure (FBHP) of the shale gas well to be measured.It is illustrated in figure 6
The fitted figure of the plan flowing bottomhole pressure (FBHP) of the shale gas well enumerated, can obtain the corresponding flowing bottomhole pressure (FBHP) of different time accordingly.
Step S120：The daily output based on the plan flowing bottomhole pressure (FBHP) and the pre-stored shale gas well to be measured obtains
Flowing bottomhole pressure (FBHP) reaches tired production during defeated pressure outside the shale gas well reality to be measured, and the prediction as the shale gas well to be measured is steady
Term tires out production.
It is understood that can obtain flowing bottomhole pressure (FBHP) according to the plan flowing bottomhole pressure (FBHP) obtained in step S110 reaches practical
Then time during outer defeated pressure is multiplied according to the daily output of the given shale gas well to be measured with the time, the product of acquisition
Tired production when as flowing bottomhole pressure (FBHP) reaches the shale gas well to be measured practical outer defeated pressure.The tired production is the shale gas well to be measured
Prediction stable production period tire out production.
Step S130：The first ratio based on shale gas-bearing formation adsorbed gas and free gas, stable production period tire out production and tire out production with decline period
The second ratio, the first ratio relationship equal with the second ratio and the prediction stable production period tire out production, the acquisition page to be measured
The prediction decline period of rock gas well tires out production.
In embodiments of the present invention, the first ratio of shale gas-bearing formation adsorbed gas and free gas can be calculated.It is then based on steady
Term tires out production and tires out the second ratio of production with decline period, and second ratio relationship equal with the first ratio calculates the page to be measured
The prediction decline period of rock gas well tires out production.Tire out production divided by the first ratio using the stable production period obtained in step S120, that is, be somebody's turn to do
The prediction decline period of shale gas well to be measured tires out production.
Step S140：Using it is described prediction stable production period tire out production with it is described prediction decline period tire out production and as the shale to be measured
The prediction recoverable reserves of gas well.
The shale gas well to be measured corresponding prediction stable production period tires out production and prediction decline period tires out production and then is based on obtaining
The sum of the two can obtain the prediction recoverable reserves of shale gas well to be measured, will two stages prediction tire out production be added so as to obtain
Obtain the prediction recoverable reserves of the shale gas well to be measured.
For example, the Forecasting Methodology of the recoverable reserves is in Sichuan Basin Fuling coke masonry dam block shale gas horizontal well JY1HF wells
Using.Using when flow be：JY1HF wells are by 60,000 sides/generation production 4 years of being preordained, this well is mainly in a manner of fixed output quota decompression
Production.Using the well daily output, tired production and flowing bottomhole pressure (FBHP) data, being drawn in log-log coordinate system has actual measurement stream pressure point to correspond to daily output
The Regularization yield of amount flows feature recognition plate with the material balance time, it can be seen that slope is -1/2, judges shale gas well
Fluidised form is in the unstable linear flow stage in a very long time, refers to fluid and flows to crack by stratum or flow to pit shaft by crack
Flowing.Plan pressure difference is drawn in rectangular plots and is multiplied by radical sign time evaluating production capacity plate with daily gas, asks for slope m, from
It and can be with Accurate Prediction flowing bottomhole pressure (FBHP)；According to shale gas well give the daily output predict to flowing bottomhole pressure (FBHP) reach outer defeated pressure when it is tired
It produces and tires out production for stable production period, JY1HF well stable production periods tire out production for 0.866 hundred million sides, and free gas is with inhaling in the case where considering adsorbed gas analysis condition
Attached gas contribution ratio and the tired production rule of established stable production period and decline period simultaneously predict that decline period tires out production for 0.664 hundred million sides,
It is 1.53 hundred million sides to predict JY1HF wells technologically recoverable reserves.
For another example the present invention is in the horizontal JY6-2HF wells application of Sichuan Basin Fuling coke masonry dam block shale gas.Using when flow
Cheng Wei：JY6-2HF wells are produced by constant pressure drop production mode.Using the well daily output, tired production and flowing bottomhole pressure (FBHP) data, sat in double-log
Mark system, which draws, has actual measurement stream pressure point to correspond to the Regularization yield of the daily output and material balance time flowing feature recognition plate, can be with
It is -1/2 to find out slope, judges that constant pressure drop generates fluidised form in shale gas well a very long time of production and is in unstable linear flow
Stage refers to fluid and flows to crack by stratum or the flowing of pit shaft is flowed to by crack.In rectangular plots draw intend pressure difference with
Daily gas is multiplied by radical sign time evaluating production capacity plate, asks for slope m, so as to Accurate Prediction flowing bottomhole pressure (FBHP)；According to JY6-2HF
Well actual production data establish corresponding Production Decline Analysis mould model, and prediction JY6-2HF wells technologically recoverable reserves are 3.74 hundred million
Side.
The Forecasting Methodology of recoverable reserves provided in an embodiment of the present invention is predicted the recoverable reserves of different phase, is examined
Considered the influence of the recoverable reserves of different phase, and consider absorption parsing adjust, so as to so that shale gas well to be measured can
The prediction for adopting reserves is more accurate, solve recoverable reserves of the prior art Forecasting Methodology prediction recoverable reserves there are larger
The problem of error.
Second embodiment
Second embodiment of the invention provides a kind of prediction meanss 200 of recoverable reserves, refers to Fig. 7, described to adopt storage
The prediction meanss 200 of amount include plan flowing bottomhole pressure (FBHP) acquisition module 210, stationary phase tires out production acquisition module 220, decline period tires out production and obtains
Module 230 and recoverable reserves acquisition module 240.Wherein, the plan flowing bottomhole pressure (FBHP) acquisition module 210 is used for based on shale to be measured
The daily output of the plan pressure difference of gas well and the shale gas well to be measured is multiplied by described in the relation curve acquisition of the arithmetic square root of time
The plan flowing bottomhole pressure (FBHP) of shale gas well to be measured, wherein, the pressure difference of intending is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP)；The stabilization
Phase tires out production acquisition module 220 and is used for the daily output based on the plan flowing bottomhole pressure (FBHP) and the pre-stored shale gas well to be measured
Tired production when flowing bottomhole pressure (FBHP) reaches defeated pressure outside the shale gas well reality to be measured is obtained, as the pre- of the shale gas well to be measured
It surveys stable production period and tires out production；The decline period tires out production acquisition module 230 and is used for the first ratio based on shale gas-bearing formation adsorbed gas and free gas
Value, stable production period tire out production and tire out the second ratio of production, the first ratio relationship equal with the second ratio and the prediction with decline period
Stable production period tires out production, and the prediction decline period for obtaining the shale gas well to be measured tires out production；The recoverable reserves acquisition module 240 is used for will
The prediction stable production period tires out production and tires out production and as the shale gas well to be measured prediction recoverable reserves with the prediction decline period.
In embodiments of the present invention, the prediction meanss of the recoverable reserves can also include the first judgment module and first
Curve acquisition module.Wherein, first judgment module is used for whether judging shale gas well production phase stable production period to be measured
For the unstable linear flow stage；The first curve acquisition module was used in shale gas well production phase stable production period to be measured
During the unstable linear flow stage, the relation curve intended pressure difference and the arithmetic square root of time is multiplied by with the daily output is obtained.
In embodiments of the present invention, the first judgment module includes curve acquisition unit, judges execution unit and judge to hold
Row unit.Wherein, the curve acquisition unit is for the daily output based on the shale gas well to be measured, tired production and shaft bottom stream
Pressure, is taken at the Regularization yield in log-log coordinate system and the relation curve of material balance time, wherein, the Regularization production
The ratio for the daily output and pressure differential is measured, the material balance time is the daily output of the tired production with the tired production corresponding time
Execution unit is judged described in ratio for judging Regularization yield feature corresponding with the relation curve of material balance time
Whether the slope of line segment is default slope；The Predicated execution unit is used in the Regularization yield and material balance time
When the slope of the corresponding Eigenvector of relation curve is default slope, then shale gas well production phase stable production period to be measured is judged
For the unstable linear flow stage；In the oblique of Regularization yield Eigenvector corresponding with the relation curve of material balance time
When rate is not for default slope, then it is not the unstable linear flow stage to judge shale gas well production phase stable production period to be measured.
In embodiments of the present invention, the first curve acquisition module was specifically used in the shale gas well stable production period to be measured
When production phase is the unstable linear flow stage, based on default Darcy's equation, default continuity equation, pre-set gas compression side
Journey, default Number of Fractures and the preset exposure area of total matrix and fracture surface, obtain plan pressure difference and are multiplied by the time with the daily output
The relation curve of arithmetic square root, wherein, the pressure difference of intending is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP).
3rd embodiment
Third embodiment of the invention provides a kind of electronics and sets 100, refers to Fig. 1, and the electronic equipment 100 includes storage
Device 102 and processor 106, the memory 102 are stored with computer instruction, when the computer instruction is by the processor
106 read and when performing, and the processor 106 is made to perform the Forecasting Methodology for the recoverable reserves that first embodiment of the invention provides.
Fourth embodiment
Fourth embodiment of the invention provides a kind of storage medium, and computer instruction is stored in the storage medium,
In, the computer instruction performs the prediction side of the recoverable reserves of first embodiment of the invention offer when being read and running
Method.
In conclusion the Forecasting Methodology of recoverable reserves provided in an embodiment of the present invention, device, electronic equipment and storage are situated between
Matter is multiplied by the pass of the arithmetic square root of time by the daily output of the plan pressure difference based on shale gas well to be measured and shale gas well to be measured
It is the plan flowing bottomhole pressure (FBHP) of curve acquisition shale gas well to be measured, wherein, intend pressure difference as pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP), so
Flowing bottomhole pressure (FBHP) is obtained based on the daily output for intending flowing bottomhole pressure (FBHP) and pre-stored shale gas well to be measured afterwards and reaches shale gas to be measured
Tired production outside well is practical during defeated pressure, the prediction stable production period as shale gas well to be measured tire out production, then based on shale gas-bearing formation adsorbed gas
With the first ratio of free gas, stable production period tires out production and tires out the second ratio of production with decline period, and the first ratio is equal with the second ratio
Relationship and prediction stable production period tire out production, and the prediction decline period for obtaining shale gas well to be measured tires out production, are finally tired out production prediction stable production period
Tire out production and as shale gas well to be measured prediction recoverable reserves with prediction decline period.This can the Forecasting Methodology of the amount of adopting consider not
With the influence of the recoverable reserves in stage, the prediction for making recoverable reserves to shale gas well to be measured is more accurate, solves the prior art
In recoverable reserves Forecasting Methodology prediction recoverable reserves there are problems that large error.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference from other examples, and just to refer each other for identical similar part between each embodiment.
For device class embodiment, since it is basicly similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in attached drawing are shown
The device of multiple embodiments according to the present invention, architectural framework in the cards, the work(of method and computer program product are shown
It can and operate.In this regard, each box in flow chart or block diagram can represent one of a module, program segment or code
Point, a part for the module, program segment or code includes one or more and is used to implement the executable of defined logic function
Instruction.It should also be noted that at some as in the realization method replaced, the function of being marked in box can also be attached to be different from
The sequence marked in figure occurs.For example, two continuous boxes can essentially perform substantially in parallel, they also may be used sometimes
To perform in the opposite order, this is depended on the functions involved.It is it is also noted that each in block diagram and/or flow chart
The combination of box and the box in block diagram and/or flow chart function or the dedicated of action can be based on as defined in execution
The system of hardware is realized or can be realized with the combination of specialized hardware and computer instruction.
In addition, each function module in each embodiment of the present invention can integrate to form an independent portion
Point or modules individualism, can also two or more modules be integrated to form an independent part.
If the function is realized in the form of software function module and is independent product sale or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform all or part of the steps of the method according to each embodiment of the present invention.
And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, term " comprising ", "comprising" or its any other variant are intended to the packet of nonexcludability
Contain so that process, method, article or equipment including a series of elements not only include those elements, but also including
It other elements that are not explicitly listed or further includes as elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, also there are other identical elements in article or equipment.
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 invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exists
Similar terms are represented in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (10)
1. a kind of Forecasting Methodology of recoverable reserves, which is characterized in that the method includes：
The daily output of plan pressure difference and the shale gas well to be measured based on shale gas well to be measured is multiplied by the arithmetic square root of time
Relation curve obtains the plan flowing bottomhole pressure (FBHP) of the shale gas well to be measured, wherein, the plan pressure difference is pseudo-reservoir pressure with intending shaft bottom
Flow the difference of pressure；
The daily output based on the plan flowing bottomhole pressure (FBHP) and the pre-stored shale gas well to be measured obtains flowing bottomhole pressure (FBHP) and reaches
Tired production outside the shale gas well to be measured is practical during defeated pressure, the prediction stable production period as the shale gas well to be measured tire out production；
The first ratio based on shale gas-bearing formation adsorbed gas and free gas, stable production period tire out production and tire out the second ratio of production with decline period, the
The one ratio relationship equal with the second ratio and the prediction stable production period tire out production, and the prediction for obtaining the shale gas well to be measured is passed
The phase of subtracting tires out production；
Using it is described prediction stable production period tire out production with it is described prediction decline period tire out production and can as the prediction of the shale gas well to be measured
Adopt reserves.
2. according to the method described in claim 1, it is characterized in that, the well plan pressure difference based on shale gas to be measured is treated with described
The relation curve of arithmetic square root that the daily output for surveying shale gas well is multiplied by the time predicts the shaft bottom stream of the shale gas well to be measured
Before pressure, the method further includes：
Judge whether shale gas well production phase stable production period to be measured is the unstable linear flow stage；
When to be, the relation curve intended pressure difference and the arithmetic square root of time is multiplied by with the daily output is obtained.
3. according to the method described in claim 2, it is characterized in that, described judge the shale gas well stable production period production rank to be measured
Whether section is the unstable linear flow stage, including：
The daily output based on the shale gas well to be measured, tired production and flowing bottomhole pressure (FBHP), are taken at regular in log-log coordinate system
Change the relation curve of yield and material balance time, wherein, the Regularization yield is the daily output and the ratio of pressure differential, described
The material balance time is ratio of the tired production with the daily output of the tired production corresponding time；
Whether the slope for judging Regularization yield Eigenvector corresponding with the relation curve of material balance time is default
Slope；
When to be, then it is the unstable linear flow stage to judge shale gas well production phase stable production period to be measured；
When being no, then it is not the unstable linear flow stage to judge shale gas well production phase stable production period to be measured.
4. according to the method described in claim 2, it is characterized in that, described when to be, the acquisition plan pressure difference and the daily output
The relation curve of the arithmetic square root of time is multiplied by, including：
When to be, based on default Darcy's equation, default continuity equation, pre-set gas compression equation, default Number of Fractures with
And the preset exposure area of total matrix and fracture surface, obtain the relationship song for intending the arithmetic square root that pressure difference is multiplied by the time with the daily output
Line, wherein, the pressure difference of intending is pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP).
5. a kind of prediction meanss of recoverable reserves, which is characterized in that described device includes intending flowing bottomhole pressure (FBHP) acquisition module, stationary phase
Tired production acquisition module, decline period tire out production acquisition module and recoverable reserves acquisition module, wherein,
The flowing bottomhole pressure (FBHP) acquisition module of intending is for the day for intending pressure difference and the shale gas well to be measured based on shale gas well to be measured
Yield is multiplied by the plan flowing bottomhole pressure (FBHP) of the relation curve acquisition shale gas well to be measured of the arithmetic square root of time, wherein, it is described
Intend pressure difference as pseudo-reservoir pressure and the difference for intending flowing bottomhole pressure (FBHP)；
The stationary phase tires out production acquisition module and is used for based on the plan flowing bottomhole pressure (FBHP) and the pre-stored shale gas to be measured
The daily output of well obtains tired production when flowing bottomhole pressure (FBHP) reaches defeated pressure outside the shale gas well reality to be measured, as the page to be measured
The prediction stable production period of rock gas well tires out production；
The decline period tires out production acquisition module for the first ratio based on shale gas-bearing formation adsorbed gas and free gas, and stable production period tires out production
The second ratio of production is tired out with decline period, the first ratio relationship equal with the second ratio and the prediction stable production period tire out production, obtain
The prediction decline period of the shale gas well to be measured is taken to tire out production；
The recoverable reserves acquisition module be used for using it is described prediction stable production period tire out production with it is described prediction decline period tire out production and as
The prediction recoverable reserves of the shale gas well to be measured.
6. device according to claim 5, which is characterized in that described device further includes the first judgment module and the first song
Line acquisition module, wherein,
First judgment module is used to judge whether shale gas well production phase stable production period to be measured is unstable linear flow
Stage；
It is unstable linear flow rank that the first curve acquisition module, which was used in shale gas well production phase stable production period to be measured,
Duan Shi obtains the relation curve intended pressure difference and the arithmetic square root of time is multiplied by with the daily output.
7. device according to claim 6, which is characterized in that the first judgment module includes curve acquisition unit, judges to hold
Row unit and Predicated execution unit, wherein,
The curve acquisition unit is taken at for the daily output based on the shale gas well to be measured, tired production and flowing bottomhole pressure (FBHP)
Regularization yield and the relation curve of material balance time in log-log coordinate system, wherein, the Regularization yield is daily output
The ratio of amount and pressure differential, the material balance time are ratio of the tired production with the daily output of the tired production corresponding time
The judgement execution unit is used to judge Regularization yield feature corresponding with the relation curve of material balance time
Whether the slope of line segment is default slope；
The Predicated execution unit is used in Regularization yield characteristic curve corresponding with the relation curve of material balance time
When the slope of section is default slope, then it is the unstable linear flow stage to judge shale gas well production phase stable production period to be measured；
When the slope of Regularization yield Eigenvector corresponding with the relation curve of material balance time is not for default slope, then
It is not the unstable linear flow stage to judge shale gas well production phase stable production period to be measured.
8. device according to claim 6, which is characterized in that the first curve acquisition module is specifically used for treating described
When to survey shale gas well production phase stable production period be the unstable linear flow stage, based on default Darcy's equation, default continuity equation,
Pre-set gas compression equation, default Number of Fractures and the preset exposure area of total matrix and fracture surface, obtain and intend pressure difference and day
Yield is multiplied by the relation curve of the arithmetic square root of time, wherein, the pressure difference of intending is pseudo-reservoir pressure and plan flowing bottomhole pressure (FBHP)
Difference.
9. a kind of electronic equipment, which is characterized in that the electronic equipment includes memory and processor, and the memory is stored with
Computer instruction, when the computer instruction is read and performed by the processor, the processor is made to perform right such as will
Seek the method described in any claim in 1-4.
10. a kind of storage medium, which is characterized in that computer instruction is stored in the storage medium, wherein, the computer
Instruct the method performed when being read and running as described in claim any in claim 1-4.
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