CN109424349A - Fiber takes the acquisition methods and device of sand turning efficiency - Google Patents
Fiber takes the acquisition methods and device of sand turning efficiency Download PDFInfo
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- CN109424349A CN109424349A CN201710740278.6A CN201710740278A CN109424349A CN 109424349 A CN109424349 A CN 109424349A CN 201710740278 A CN201710740278 A CN 201710740278A CN 109424349 A CN109424349 A CN 109424349A
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- imbibition
- stifled
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention provides the acquisition methods and device that a kind of fiber takes sand turning efficiency, this method comprises: obtaining at the first moment and turning a forward first ground construction pressure；At the second moment, the second ground construction pressure after turning to is obtained；The ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number is obtained according to the first ground construction pressure, the second ground construction pressure and parameter preset；The parameter preset includes the diameter of the pre- stifled imbibition eyelet, the pre- stifled imbibing hole eye-shaped shape flow coefficient, turns to staged construction discharge capacity and diversion agent specific gravity；Determine that the fiber takes sand turning efficiency according to the ratio.Fiber provided by the invention takes the acquisition methods and device of sand turning efficiency, improves the accuracy that fiber takes sand turning efficiency.
Description
Technical field
The present invention relates to acquisition methods and dress that oil reservoir technical field more particularly to a kind of fiber take sand turning efficiency
It sets.
Background technique
For gram ultra-deep in deep area, superhigh temperature, super-pressure reservoir conditions, generally use at present fiber take sand turn to it is real
Now classification turns to technique.So-called fiber take sand turn to technique, be by added in fracturing fluid fluid certain density fiber and
Proppant, during pumping note, the certain density fiber and proppant are formed when reaching crack sealing position and are temporarily blocked up, to hinder
Only subsequent fluid enters stratum, i.e., prevents the lasting feed liquor of eyelet by blocking the crack being connected with preforation tunnel, indirectly
It is formed to the temporary stifled of preforation tunnel.
In the prior art, when acquisition fiber takes sand turning efficiency, usually according to the ground construction pressure in steering procedure
The parameters such as power variation, the variation for turning to front and back fracture propagation pressure, the variation of instantaneous characteristics determine that fiber takes sand and turns to effect
Fruit, so that the accuracy that fiber takes sand turning efficiency is not high.
Summary of the invention
The present invention provides the acquisition methods and device that a kind of fiber takes sand turning efficiency, takes sand turning efficiency to improve fiber
Accuracy.
The present invention provides the acquisition methods that a kind of fiber takes sand turning efficiency, comprising:
At the first moment, obtains and turn forward first ground construction pressure；
At the second moment, the second ground construction pressure after turning to is obtained；
It is obtained according to the first ground construction pressure, the second ground construction pressure and parameter preset and does not block up imbibing hole
The ratio of eye number and pre- stifled imbibition eyelet number；The parameter preset includes the diameter, described pre- of the pre- stifled imbibition eyelet
Stifled imbibing hole eye-shaped shape flow coefficient turns to staged construction discharge capacity and diversion agent specific gravity；
Determine that the fiber takes sand turning efficiency according to the ratio.
In an embodiment of the present invention, described according to the first ground construction pressure, the second ground construction pressure
And parameter preset obtains the ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number, comprising:
According toObtain the ratio of not stifled the imbibition eyelet number and the pre- stifled imbibition eyelet number
Value；
Wherein,Δ P=P2-P1；N2It indicates described and does not block up imbibition eyelet number, N1
Indicate the pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure
Power, dpIndicate that the diameter of the pre- stifled imbibition eyelet, c indicate that the pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate described and turn
The diversion agent specific gravity is indicated to staged construction discharge capacity, ρ.
It is in an embodiment of the present invention, described to determine that the fiber takes sand turning efficiency according to the ratio, comprising:
The ratio for the imbibition eyelet number that is blocked according to ratio acquisition；
Determine that the fiber takes sand turning efficiency according to the ratio for being blocked imbibition eyelet number.
In an embodiment of the present invention, the ratio of the imbibition eyelet number that is blocked according to ratio acquisition, packet
It includes:
According toThe ratio for the imbibition eyelet number that is blocked described in acquisition.
In an embodiment of the present invention, when the pre- stifled imbibition eyelet is without sand fracturing, the pre- stifled imbibing hole
Eye-shaped shape flow coefficient is any value in 0.55 to 0.66；It is described pre- when the default imbibition eyelet have passed through sand fracturing
Stifled imbibing hole eye-shaped shape flow coefficient is any value in 0.95 to 0.99.
The embodiment of the present invention also provides the acquisition device that a kind of fiber takes sand turning efficiency, comprising:
Acquiring unit, for obtaining and turning forward first ground construction pressure at the first moment；
The acquiring unit is also used to obtain the second ground construction pressure after turning at the second moment；
Processing unit, for according to the first ground construction pressure, the second ground construction pressure and parameter preset
Obtain the ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number；The parameter preset includes the pre- stifled imbibition eyelet
Diameter, the pre- stifled imbibing hole eye-shaped shape flow coefficient, turn to staged construction discharge capacity and diversion agent specific gravity；
Determination unit, for determining that the fiber takes sand turning efficiency according to the ratio.
In an embodiment of the present invention, the processing unit is specifically used for basisIt is not blocked up described in obtaining
The ratio of imbibition eyelet number and the pre- stifled imbibition eyelet number；
Wherein,Δ P=P2-P1；N2It indicates described and does not block up imbibition eyelet number, N1
Indicate the pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure
Power, dpIndicate that the diameter of the pre- stifled imbibition eyelet, c indicate that the pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate described and turn
The diversion agent specific gravity is indicated to staged construction discharge capacity, ρ.
In an embodiment of the present invention, the determination unit, specifically for the imbibition that is blocked according to ratio acquisition
The ratio of eyelet number；And determine that the fiber takes sand turning efficiency according to the ratio for being blocked imbibition eyelet number.
In an embodiment of the present invention, the determination unit is specifically used for basisBe blocked imbibition eyelet described in acquisition
The ratio of number.
In an embodiment of the present invention, when the pre- stifled imbibition eyelet is without sand fracturing, the pre- stifled imbibing hole
Eye-shaped shape flow coefficient is any value in 0.55 to 0.66；It is described pre- when the default imbibition eyelet have passed through sand fracturing
Stifled imbibing hole eye-shaped shape flow coefficient is any value in 0.95 to 0.99.
Fiber provided in an embodiment of the present invention takes the acquisition methods and device of sand turning efficiency, by obtaining at the first moment
It takes and turns forward first ground construction pressure；At the second moment, the second ground construction pressure after turning to is obtained；And according to first
Ground construction pressure, the second ground construction pressure and parameter preset obtain not stifled imbibition eyelet number and pre- stifled imbibition eyelet number
Ratio；And then determine that fiber takes sand turning efficiency according to ratio.It can be seen that fiber provided in an embodiment of the present invention is taken
The acquisition methods and device of sand turning efficiency are obtained by the first ground construction pressure, the second ground construction pressure and parameter preset
The ratio between not stifled imbibition eyelet number and pre- stifled imbibition eyelet number is taken, and determines that fiber takes sand and turns to effect according to the ratio
Fruit, to improve the accuracy that fiber takes sand turning efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram for the acquisition methods that a kind of fiber provided in an embodiment of the present invention takes sand turning efficiency；
Fig. 2 is a kind of imbibing hole the structure of the eye schematic diagram without sand fracturing provided in an embodiment of the present invention；
Fig. 3 is a kind of imbibing hole the structure of the eye schematic diagram by sand fracturing provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of turn-around design provided in an embodiment of the present invention；
Fig. 5 is a kind of construction schematic diagram in steering stage provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram for the acquisition device that a kind of fiber provided in an embodiment of the present invention takes sand turning efficiency.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A 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
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this
A little process, methods, the other step or units of product or equipment inherently.
In the following, being described in detail with technical solution of the specific embodiment to the application.It should be noted that below this
Several specific embodiments can be combined with each other, may be no longer superfluous in some embodiments for the same or similar concept or process
It states.
Fig. 1 is the flow diagram for the acquisition methods that a kind of fiber provided in an embodiment of the present invention takes sand turning efficiency, should
The acquisition device that the acquisition methods that fiber takes sand turning efficiency can be taken sand turning efficiency by fiber executes, which takes sand steering
The acquisition device of effect can be independently arranged, and also can integrate in the processor.Shown in Figure 1, which takes sand steering
The acquisition methods of effect may include:
S101, at the first moment, obtain and turn a forward first ground construction pressure.
S102, the second ground construction pressure at the second moment, after obtaining steering.
S103, it is obtained according to the first ground construction pressure, the second ground construction pressure and parameter preset and does not block up imbibition eyelet
The ratio of number and pre- stifled imbibition eyelet number.
Wherein, parameter preset includes the diameter of pre- stifled imbibition eyelet, pre- stifled imbibing hole eye-shaped shape flow coefficient, steering stage
Operational discharge capacity and diversion agent specific gravity.
S104, determine that fiber takes sand turning efficiency according to ratio.
Fiber provided in an embodiment of the present invention takes the acquisition methods of sand turning efficiency, by obtaining and turning at the first moment
The first preceding ground construction pressure；At the second moment, the second ground construction pressure after turning to is obtained；And it is applied according to the first ground
Work pressure, the second ground construction pressure and parameter preset obtain the ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number
Value；And then determine that fiber takes sand turning efficiency according to ratio.Turn it can be seen that fiber provided in an embodiment of the present invention takes sand
To the acquisition methods of effect, is obtained by the first ground construction pressure, the second ground construction pressure and parameter preset and do not block up imbibition
Ratio between eyelet number and pre- stifled imbibition eyelet number, and determine that fiber takes sand turning efficiency according to the ratio, to mention
High fiber takes the accuracy of sand turning efficiency.
Based on the corresponding embodiment of Fig. 1, on the basis of Fig. 1 corresponding embodiment, further, S103 is according to the first
Surface construction pressure, the second ground construction pressure and parameter preset obtain not stifled imbibition eyelet number and pre- stifled imbibition eyelet number
Ratio may include:
According toObtain the ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number.
Wherein,Δ P=P2-P1；N2It indicates not block up imbibition eyelet number, N1It indicates
Pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure, dpIndicate pre- stifled imbibition
Diameter, the c of eyelet indicate that pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate to turn to staged construction discharge capacity, ρ expression diversion agent ratio
Weight.
So, how to obtain? in embodiments of the present invention, it will derive in detail
Establishment process:
At the first moment, P1+Phyd-Pft-Ppf1-Ptort=Pc+Pnet(formula 1)
At the second moment: P2+Phyd-Pft-Ppf2-Ptort=Pc+Pnet(formula 2)
Wherein: PhydIndicate liquid column hydrostatic pressure；PftIndicate string friction；Ppf1Indicate the first moment imbibition Kong Zhaoxia；
PtortIndicate crack tortuosity frictional resistance；PcIndicate the corresponding fracture closure pressure of the 1st grade of main pressure break；PnetIndicate net in the 1st grade of crack
Pressure；Ppf2Indicate the second moment imbibition Kong Zhaoxia.
Imbibition Kong Zhaoxia PperfCalculation formula it is as follows:
Optionally, in embodiments of the present invention, if being taken before sand turns to and carry out in fiber, in pre- stifled imbibition eyelet without adding
When sand pressure break, pre- stifled imbibing hole eye-shaped shape flow coefficient is any value in 0.55 to 0.66；It has passed through and add in default imbibition eyelet
When sand pressure break, pre- stifled imbibing hole eye-shaped shape flow coefficient is any value in 0.95 to 0.99.It is exemplary, shown in Figure 2, figure
2 be a kind of imbibing hole the structure of the eye schematic diagram without sand fracturing provided in an embodiment of the present invention, in the embodiment of the present invention
In, when pre- stifled imbibition eyelet is without sand fracturing, the initial value of pre- stifled imbibing hole eye-shaped shape flow coefficient is usually 0.61；
Shown in Figure 3, Fig. 3 is a kind of imbibing hole the structure of the eye schematic diagram by sand fracturing provided in an embodiment of the present invention,
And in a gram deep area, it have passed through sand fracturing (adding sand 50t-60t) in default imbibition eyelet, when, pre- stifled imbibing hole eye-shaped shape stream
Dynamic coefficient is 0.98.
It is available according to formula 1 and formula 2:
P2-P1=Ppf2-Ppf1=Δ P (formula 4)
It enablesThen obtain following formula:
It enablesThen obtain following formula:
Do not block up imbibing hole number N then2With pre- stifled imbibing hole number N1Ratio:
To obtain
Imbibing hole number N is not blocked up getting2With pre- stifled imbibing hole number N1Ratio after, so that it may according to the ratio
Determine that fiber takes sand turning efficiency.In embodiments of the present invention, determine that fiber takes sand turning efficiency there are two types of can according to the ratio
The implementation of energy:
In the first possible implementation, directly it can determine that fiber takes sand turning efficiency according to the ratio, the ratio
Value takes sand turning efficiency with fiber and is inversely proportional.
It is exemplary, if not blocking up imbibing hole number N2With pre- stifled imbibing hole number N1Ratio be 23%, then fiber take sand steering
Effect is 77%, if not blocking up imbibing hole number N2With pre- stifled imbibing hole number N1Ratio be 40%, then fiber takes sand turning efficiency
It is 60%.
In the second possible implementation, the ratio for the imbibition eyelet number that is blocked can be first obtained according to ratio；Root
Determine that fiber takes sand turning efficiency according to the ratio for the imbibition eyelet number that is blocked, it is directly proportional which to fiber takes sand turning efficiency.
Optionally, in embodiments of the present invention, the ratio of imbibition eyelet number of being blocked is obtained according to ratio, may include:
According toObtain the ratio for the imbibition eyelet number that is blocked.
It is exemplary, if not blocking up imbibing hole number N2With pre- stifled imbibing hole number N1Ratio be 23%, can be with according to the ratio
The ratio for obtaining the imbibition eyelet number that is blocked is 77%, then it is 77% that fiber, which takes sand turning efficiency, if not blocking up imbibing hole number N2
With pre- stifled imbibing hole number N1Ratio be 40%, be according to the available ratio for being blocked imbibition eyelet number of the ratio
60%, then it is 66% that fiber, which takes sand turning efficiency,.
It can be seen that fiber provided in an embodiment of the present invention takes sand turning efficiency acquisition methods, first passes through the first ground and apply
Work pressure, the second ground construction pressure and parameter preset obtain between not stifled imbibition eyelet number and pre- stifled imbibition eyelet number
Ratio obtains the ratio for the imbibition eyelet number that is blocked further according to ratio, and then determines that fiber takes sand and turns to effect according to the ratio
Fruit, it is often more important that, it can determine that fiber takes the occurrence of sand turning efficiency, to improve the standard that fiber takes sand turning efficiency
Exactness.It is also possible to the acquisition that the fiber for after takes sand turning efficiency provides reference, and it is exemplary, refer to following table 1 institute
Show:
1 fiber of table takes sand and turns to construction parameter combination
It can be seen that in conjunction with table 1, it is generally the case that the value range of fibre concentration is 11-18kg/m3；Proppant concentration
Value range be 240-480kg/m3；The value range of fiber slug volume is 1.5-9.5m3；Diversion agent enters formation velocity
Value range be 1.5-3m3/min.It constructs for the steering that gram depth is 2 blocks, the value of fibre concentration can be 12kg/
m3；The value of proppant concentration can be 300kg/m3；The value of fiber slug volume can be 9m3；Diversion agent enters stratum
The value of speed can be 2m3/min.
In the following, shown in Figure 4, Fig. 4 is a kind of schematic diagram of turn-around design provided in an embodiment of the present invention, in conjunction with figure
Before 4 it can be seen that turn to, diversion agent enters reservoir, and area 1 is first with regional 2 crack initiations, and there are q1 > q2 for stratum liquid inlet volume；It turns to
In, the stratum feed liquor section of diversion agent with turn to before feed liquor section it is consistent, into the steering dosage on stratum, there are q1 > q2；It turns to
Afterwards, most of diversion agent enters area 1, and temporarily the imbibition eyelet in stifled area 1, stratum feed liquor section change, during subsequent construction
There are q2 > q1.Turn-around design based on shown in Fig. 4, shown in Figure 5, Fig. 5 is a kind of steering provided in an embodiment of the present invention
The construction schematic diagram in stage；In conjunction with Fig. 5 as can be seen that diversion agent lays the stage, ground construction pressure is gradually increased, by
65.6MPa is gradually increased to 72MPa, Δ P=6.4MPa, turns to staged construction discharge capacity Q=1.5m3/min, the liquid of diversion agent
Specific gravity ρ=1.3, the diameter dp=8.6mm of pre- stifled imbibition eyelet, pre- stifled imbibing hole eye-shaped shape flow coefficient c=0.98, pre- stifled suction
Fluid apertures eye number N1=64, sand turning efficiency acquisition methods are taken using fiber provided in an embodiment of the present invention, it can be deduced that do not block up
The ratio of imbibition hole count and pre- stifled imbibition hole count is 7%, and the ratio for the imbibition eyelet number that is blocked is 93%, then fiber takes sand steering
Effect is 93%, improves the accuracy that fiber takes sand turning efficiency.
Fig. 6 is the structural schematic diagram for the acquisition device 60 that a kind of fiber provided in an embodiment of the present invention takes sand turning efficiency,
Certainly, the embodiment of the present invention is only illustrated by taking Fig. 6 as an example, but does not represent that present invention is limited only by this.Refer to Fig. 6 institute
Show, the acquisition device 60 which takes sand turning efficiency includes:
Acquiring unit 601, for obtaining and turning forward first ground construction pressure at the first moment.
Acquiring unit 601 is also used to obtain the second ground construction pressure after turning at the second moment.
Processing unit 602, for being obtained not according to the first ground construction pressure, the second ground construction pressure and parameter preset
The ratio of stifled imbibition eyelet number and pre- stifled imbibition eyelet number；Parameter preset includes the diameter of pre- stifled imbibition eyelet, pre- stifled suction
Fluid apertures eye-shaped shape flow coefficient turns to staged construction discharge capacity and diversion agent specific gravity.
Determination unit 603, for determining that fiber takes sand turning efficiency according to ratio.
Optionally, processing unit 602 are specifically used for basisObtain stifled imbibition eyelet number and pre-
The ratio of stifled imbibition eyelet number.
Wherein,Δ P=P2-P1；N2It indicates not block up imbibition eyelet number, N1It indicates
Pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure, dpIndicate pre- stifled imbibition
Diameter, the c of eyelet indicate that pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate to turn to staged construction discharge capacity, ρ expression diversion agent ratio
Weight.
Optionally, determination unit 603, specifically for obtaining the ratio for the imbibition eyelet number that is blocked according to ratio；And according to
The ratio for the imbibition eyelet number that is blocked determines that fiber takes sand turning efficiency.
Optionally, determination unit 603 are specifically used for basisObtain the ratio for the imbibition eyelet number that is blocked.
Optionally, when pre- stifled imbibition eyelet is without sand fracturing, pre- stifled imbibing hole eye-shaped shape flow coefficient is 0.55
Any value in 0.66；When default imbibition eyelet have passed through sand fracturing, pre- stifled imbibing hole eye-shaped shape flow coefficient is 0.95
Any value in 0.99.
The acquisition device 60 that fiber shown in the embodiment of the present invention takes sand turning efficiency can execute above-mentioned fiber and take sand turn
Technical solution shown in acquisition methods embodiment to effect, realization principle and beneficial effect are similar, no longer carry out herein
It repeats.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. the acquisition methods that a kind of fiber takes sand turning efficiency characterized by comprising
At the first moment, obtains and turn forward first ground construction pressure；
At the second moment, the second ground construction pressure after turning to is obtained；
It is obtained according to the first ground construction pressure, the second ground construction pressure and parameter preset and does not block up imbibition eyelet number
The ratio of mesh and pre- stifled imbibition eyelet number；The parameter preset includes the diameter of the pre- stifled imbibition eyelet, the pre- stifled suction
Fluid apertures eye-shaped shape flow coefficient turns to staged construction discharge capacity and diversion agent specific gravity；
Determine that the fiber takes sand turning efficiency according to the ratio.
2. the method according to claim 1, wherein it is described according to the first ground construction pressure, described
Two ground construction pressure and parameter preset obtain the ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number, comprising:
According toObtain the ratio of not stifled the imbibition eyelet number and the pre- stifled imbibition eyelet number；
Wherein,Δ P=P2-P1；N2It indicates described and does not block up imbibition eyelet number, N1Indicate institute
State pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure, dpTable
Show that the diameter of the pre- stifled imbibition eyelet, c indicate that the pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate the steering stage
Operational discharge capacity, ρ indicate the diversion agent specific gravity.
3. according to the method described in claim 2, it is characterized in that, described determine that the fiber is taken sand and turned to according to the ratio
Effect, comprising:
The ratio for the imbibition eyelet number that is blocked according to ratio acquisition；
Determine that the fiber takes sand turning efficiency according to the ratio for being blocked imbibition eyelet number.
4. according to the method described in claim 3, it is characterized in that, the imbibition eyelet that is blocked according to ratio acquisition
The ratio of number, comprising:
According toThe ratio for the imbibition eyelet number that is blocked described in acquisition.
5. method according to claim 1-4, which is characterized in that
When the pre- stifled imbibition eyelet is without sand fracturing, the pre- stifled imbibing hole eye-shaped shape flow coefficient be 0.55 to
Any value in 0.66；When the default imbibition eyelet have passed through sand fracturing, the pre- stifled imbibing hole eye-shaped shape flow coefficient
For any value in 0.95 to 0.99.
6. the acquisition device that a kind of fiber takes sand turning efficiency characterized by comprising
Acquiring unit, for obtaining and turning forward first ground construction pressure at the first moment；
The acquiring unit is also used to obtain the second ground construction pressure after turning at the second moment；
Processing unit, for being obtained according to the first ground construction pressure, the second ground construction pressure and parameter preset
The ratio of not stifled imbibition eyelet number and pre- stifled imbibition eyelet number；The parameter preset includes the straight of the pre- stifled imbibition eyelet
Diameter, turns to staged construction discharge capacity and diversion agent specific gravity at the pre- stifled imbibing hole eye-shaped shape flow coefficient；
Determination unit, for determining that the fiber takes sand turning efficiency according to the ratio.
7. device according to claim 6, which is characterized in that
The processing unit is specifically used for basisObtain the stifled imbibition eyelet number and described pre- stifled
The ratio of imbibition eyelet number；
Wherein,Δ P=P2-P1；N2It indicates described and does not block up imbibition eyelet number, N1It indicates
The pre- stifled imbibition eyelet number, P1Indicate the first ground construction pressure, P2Indicate the second ground construction pressure, dp
Indicate that the diameter of the pre- stifled imbibition eyelet, c indicate that the pre- stifled imbibing hole eye-shaped shape flow coefficient, Q indicate the steering rank
Section operational discharge capacity, ρ indicate the diversion agent specific gravity.
8. device according to claim 7, which is characterized in that
The determination unit, specifically for the ratio for the imbibition eyelet number that is blocked according to ratio acquisition；And according to institute
The ratio for stating the imbibition eyelet number that is blocked determines that the fiber takes sand turning efficiency.
9. device according to claim 8, which is characterized in that
The determination unit is specifically used for basisThe ratio for the imbibition eyelet number that is blocked described in acquisition.
10. according to the described in any item devices of claim 6-9, which is characterized in that
When the pre- stifled imbibition eyelet is without sand fracturing, the pre- stifled imbibing hole eye-shaped shape flow coefficient be 0.55 to
Any value in 0.66；When the default imbibition eyelet have passed through sand fracturing, the pre- stifled imbibing hole eye-shaped shape flow coefficient
For any value in 0.95 to 0.99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710740278.6A CN109424349B (en) | 2017-08-25 | 2017-08-25 | Method and device for acquiring fiber sand-carrying steering effect |
Applications Claiming Priority (1)
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