CN109538193A - A kind of runner phenetic analysis method applied to fracture-pore reservoir - Google Patents
A kind of runner phenetic analysis method applied to fracture-pore reservoir Download PDFInfo
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- CN109538193A CN109538193A CN201910082335.5A CN201910082335A CN109538193A CN 109538193 A CN109538193 A CN 109538193A CN 201910082335 A CN201910082335 A CN 201910082335A CN 109538193 A CN109538193 A CN 109538193A
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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Abstract
The present invention relates to a kind of runner phenetic analysis methods applied to fracture-pore reservoir, steps are as follows: 1) obtaining the tracer production curve of target fracture-pore reservoir, the tracer production curve changing features for analyzing fracture-pore reservoir, according to sharp peaks characteristic generalized plot type；2) the fracture hole characteristic parameter of target reservoir is analyzed, foundation represents target reservoir seam/hole feature conceptual model；3) combinated seam/hole model is concluded, representative seam/hole model is formed；4) the tracer curve feature in step (1), the corresponding communicating passage of a peak value are combined；5) the characterization defined analysis by crack/solution cavity on tracer curve；6) (time before Liquid output × take effect) in the fracture-pore reservoir of tracer characterization, solution cavity volume (Liquid output × responding time value range) and fracture hole ratio are calculated to characterize flow path features.This method can reasonably parse the feature of fracture-pore reservoir tracer production curve, to help to recognize oil reservoir.
Description
Technical field
The invention belongs to oil-gas field development fields, are related to a kind of runner phenetic analysis method applied to fracture-pore reservoir.
Background technique
The Reservoir Body of fracture and vug carbonate reservoir is made of solution cavity, crack and dissolution pore, and medium-and-large-sized cave is main
Reservoir space, crack is both main reservoir space and main communicating passage.And waterflooding extraction improves fracture-pore reservoir
Stable yields and one of the most important development scheme of recovery ratio is improved, is that injection water electrode is easily broken through and forms predominant pathway there are problem, fastly
Speed causes injection-production well group single by imitating, and water drive, which involves, to be limited in scope, and flood effectiveness is gradually deteriorated, and the production for being unfavorable for oil reservoir is opened
Hair.In conventional runner characterizing method, tracer is a kind of very common technology, but fracture and vug carbonate reservoir shows
Track agent occurrence characteristics are different from sandstone oil reservoir, cannot be general for the explanation means and methods of production curve.Therefore, it is necessary to establish
A kind of runner phenetic analysis method applied to fracture-pore reservoir.
Summary of the invention
The purpose of the invention is to which the tracer production curve feature of fracture-pore reservoir is depicted, and then pass through tracer
Curve sees clearly fracture-pore reservoir feature, and designs a kind of runner phenetic analysis method applied to fracture-pore reservoir.This method packet
Include following steps:
Step (1): the tracer production curve of target fracture-pore reservoir is obtained, the tracer output of fracture-pore reservoir is analyzed
Curvilinear characteristic variation concludes tracer production curve type according to sharp peaks characteristic.
Step (2): analyzing the fracture hole characteristic parameter of target reservoir, establishes and represents the general of target reservoir crack and solution cavity feature
Read model.
Step (3): crack/solution cavity model combination is concluded, representative crack/solution cavity model is formed.
Step (4): in conjunction with the tracer curve feature in step (1), by the peak value in the curve in tracer it is corresponding at
Advantage communicating passage in oil reservoir.
Step (5): phenetic analysis is carried out for tracer feature fracture and solution cavity indication range.
Step (6): calculate crevice volume (time before Liquid output × take effect) in the fracture-pore reservoir of tracer characterization,
Solution cavity volume (Liquid output × responding time value range) and fracture hole ratio are to characterize flow path features.
As the perfect of technology, the tracer occurrence characteristics of fracture-pore reservoir are analyzed described in step (1), it is characterized in that according to
According to the tracer occurrence characteristics of sandstone oil reservoir, according to the peak value of sandstone oil reservoir tracer output rule (normal distribution law is presented)
The understanding for judging predominant pathway, the predominant pathway tracer production curve feature of fracture-pore reservoir being interpreted as in oil reservoir
A corresponding peak value.
As the perfect of technology, the fracture hole feature of target reservoir is analyzed described in step (2), it is characterized in that distinguishing and sorting out
Crack present in oil reservoir and type of cavern determine the size (length × width × height), the filling type of solution cavity and size in crack；And
With the seam of target reservoir/hole type and size average value, seam/hole mathematical model is established using digital-to-analogue software.
As the perfect of technology, crack/solution cavity model is combined in the conclusion in step (3), formed representative crack/
Solution cavity model, it is characterized in that crack and solution cavity in circulation passage between injector producer distance, either in parallel or concatenated connection
Solution cavities all in communicating passage are merged into a solution cavity using the principle of similitude by mode, and crack is merged two cracks, is connected respectively
It connects at solution cavity both ends.
As the perfect of technology, characterization defined analysis described in step (5) by crack/solution cavity on tracer curve,
It is characterized in that crevice volume is small in size compared to solution cavity too many, it is easier to break through between injector producer distance, then tracer is broken through at first
Time be exactly crevice volume size；The responding time characterization of remaining tracer is all solution cavity volume.
The present invention provides a kind of runner phenetic analysis methods applied to fracture-pore reservoir, are the runner of fracture-pore reservoir
Characterization provides Research foundation.
Detailed description of the invention
The runner phenetic analysis method applied to fracture-pore reservoir a kind of to the present invention is made furtherly with reference to the accompanying drawing
It is bright:
The tracer production curve feature of Fig. 1 single-peakedness condition
The tracer production curve feature of Fig. 2 bimodal conditions
The representative unimodal crack/solution cavity model schematic of Fig. 3
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Step (1): according to certain reservoir condition, the tracer production curve of development, it can be seen that fracture-pore reservoir tracer
Output changes greatly, but still remains peak value, shows mono-/bis -/form, sees Fig. 1-Fig. 2.
Step (2): certain reservoir geology analysis of data shows that the mean breadth in crack is 2.2mm；Seam height is mainly distributed on
Within the scope of 0.6m~1.0m.Thus crack conceptual model size is established are as follows: stitch high 0.9m, slit width 2.2mm stitches long 50m.For molten
Known to the analysis result in hole: the average a height of 7.7m in hole, the geometric shape in hole is different, and scrambling is strong, to develop unfilled and portion
Divide based on filling solution cavity.So the conceptual model of solution cavity is established are as follows: the square body Model of side length 5m, inside are not filled through, can be with
Embody solution cavity scrambling influences to fluid bring.
Step (3): crack and solution cavity in the circulation passage between injector producer distance, either in parallel or concatenated connection
Solution cavities all in communicating passage are merged into a solution cavity using the principle of similitude by mode, and crack is merged two cracks, is connected respectively
It connects and forms conceptual model as shown in Figure 3 at solution cavity both ends (Fig. 3 is only only unimodal conceptual model, is exactly two moulds if bimodal
The combination of type parallel connection).
Step (4): a peak value has several peak values to a circulation passage, then just possessing several masters between injection-production well
Circulation road.
Step (5): crevice volume is small in size compared to solution cavity too many, is easier to break through between injector producer distance, then tracer
The time broken through at first is exactly crevice volume size；The responding time characterization of remaining tracer is all solution cavity volume.
Step (6): tracer curve shown in FIG. 1, calculating the fracture hole ratio in fracture-pore reservoir to characterize runner is
0.102；This and other monitoring means of oil reservoir obtain data and are consistent, therefore the fracture-pore reservoir tracer of this method analysis understanding
Agent production curve is characterized in correctly, and significant.
Above embodiment, which is intended to illustrate the present invention, to be realized or use for professional and technical personnel in the field, to above-mentioned
Embodiment, which is modified, will be readily apparent to those skilled in the art, therefore the present invention includes but is not limited to
Above embodiment, it is any to meet the claims or specification description, meet with principles disclosed herein and novelty,
The method of inventive features, technique, product, fall within the scope of protection of the present invention.
Claims (3)
1. a kind of runner phenetic analysis method applied to fracture-pore reservoir, comprising the following steps:
Step (1): the tracer production curve of target fracture-pore reservoir is obtained, the tracer production curve of fracture-pore reservoir is analyzed
Changing features conclude tracer production curve type according to sharp peaks characteristic.
Step (2): analyzing the fracture hole characteristic parameter of target reservoir, establishes the concept mould for representing target reservoir crack and solution cavity feature
Type.
Step (3): crack/solution cavity model combination is concluded, representative crack/solution cavity model is formed.
Step (4): in conjunction with the tracer curve feature in step (1), the peak value in the curve in tracer is corresponding at oil reservoir
In advantage communicating passage.
Step (5): phenetic analysis is carried out for tracer feature fracture and solution cavity indication range.
Step (6): crevice volume (time before Liquid output × take effect) in the fracture-pore reservoir of tracer characterization, solution cavity are calculated
Volume (Liquid output × responding time value range) and fracture hole ratio are to characterize flow path features.
2. a kind of runner phenetic analysis method applied to fracture-pore reservoir according to claim 1, it is characterized in that: step
(1) the tracer occurrence characteristics of the analysis fracture-pore reservoir described in, it is characterized in that the tracer occurrence characteristics according to sandstone oil reservoir,
According to the understanding that the peak value of sandstone oil reservoir tracer output rule (normal distribution law is presented) judges predominant pathway, by fracture hole type
The tracer production curve feature of oil reservoir is interpreted as the corresponding peak value of a predominant pathway in oil reservoir.
3. a kind of method for parsing fracture-pore reservoir tracer production curve feature according to claim 1, it is characterized in that:
Characterization defined analysis described in step (5) by crack/solution cavity on tracer curve, it is characterized in that crevice volume is compared to molten
Hole is small in size too many, is easier to break through between injector producer distance, then the time that tracer is broken through at first is exactly crevice volume size；Its
The responding time characterization of remaining tracer is all solution cavity volume.
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Cited By (4)
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| CN110259426A (en) * | 2019-07-02 | 2019-09-20 | 北京捷贝通石油技术股份有限公司 | Pressure alters the evaluation method of degree between a kind of unconventional platform well well |
| CN113756790A (en) * | 2021-09-07 | 2021-12-07 | 西安石油大学 | Novel multi-section productivity evaluation method for oil and gas well |
| CN114427427A (en) * | 2020-09-24 | 2022-05-03 | 中国石油化工股份有限公司 | Shrinkage split flow method for improving sweep range of fracture-cavity oil reservoir |
| CN115170974A (en) * | 2022-09-08 | 2022-10-11 | 深圳市勘察研究院有限公司 | Method and device for intelligently detecting connectivity of karst cave based on AI (Artificial Intelligence) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259426A (en) * | 2019-07-02 | 2019-09-20 | 北京捷贝通石油技术股份有限公司 | Pressure alters the evaluation method of degree between a kind of unconventional platform well well |
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| CN114427427A (en) * | 2020-09-24 | 2022-05-03 | 中国石油化工股份有限公司 | Shrinkage split flow method for improving sweep range of fracture-cavity oil reservoir |
| CN113756790A (en) * | 2021-09-07 | 2021-12-07 | 西安石油大学 | Novel multi-section productivity evaluation method for oil and gas well |
| CN113756790B (en) * | 2021-09-07 | 2023-10-03 | 西安石油大学 | Multi-section productivity evaluation method for oil and gas well |
| CN115170974A (en) * | 2022-09-08 | 2022-10-11 | 深圳市勘察研究院有限公司 | Method and device for intelligently detecting connectivity of karst cave based on AI (Artificial Intelligence) |
| CN115170974B (en) * | 2022-09-08 | 2022-12-20 | 深圳市勘察研究院有限公司 | Method and device for intelligently detecting connectivity of karst cave based on AI (Artificial Intelligence) |
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