CN107229083A - A kind of crack induction logging response analogue means - Google Patents
A kind of crack induction logging response analogue means Download PDFInfo
- Publication number
- CN107229083A CN107229083A CN201610179062.2A CN201610179062A CN107229083A CN 107229083 A CN107229083 A CN 107229083A CN 201610179062 A CN201610179062 A CN 201610179062A CN 107229083 A CN107229083 A CN 107229083A
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- China
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- analogue means
- induction logging
- wire netting
- simulated
- crack
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
- G01V3/28—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
Abstract
The invention discloses a kind of crack induction logging response analogue means, including：Stratum simulated assembly, is made up of multiple conductive ring groups, conductive for simulated formation；Results of fracture simulation component, is made up of wire netting group, is coupled with stratum simulated assembly, for simulated formation crack；Induction logging simulated assembly, modeling logging instrument, for carrying out formation fracture induction logging measurement；Well simulated assembly, through wire netting group and multiple conductive ring groups, for simulating borehole environment.The present invention can quantitatively determine induction logging response feature in crack under different parameters, set up fracture parameters quantitative evalution model, and then realize fracture evaluation by induction logging data.
Description
Technical field
The invention belongs to physical simulation techniques field of logging well, specifically, more particularly to a kind of crack induction logging
Response simulation device.
Background technology
Crack is both important hydrocarbon pore volume, is the important migration pathway of low permeability reservoir again.Fracture development
Whether, it is directly connected to oil-production capacity.With going deep into that oil-gas exploration and development works, the well logging of fracture-type reservoir
Appraisal has attracted increasing attention.Fracture parameters evaluation is the important problem that well log interpretation faces,
Resistivity logging is the effective means that current conventional logging evaluates crack.
It is use dual laterolog measurement stratum resistance because shoulder-bed resistivity (SBR) is higher in carbonate reservoir more
Rate.The analogue experiment installation that fracture parameters influence on dual laterolog response is developed, is carried out
The experiment that fracture parameters influence on dual laterolog response, has cleared the pass of fracture parameters and dual laterolog response
System, it is proposed that fracture parameters dual laterolog quantitative evalution model.
But, it is many using induction logging measurement in background resistivity than in relatively low sandstone, shale reservoir.Mesh
Before, the simulation analysis design influenceed on induction logging for fracture parameters is less, with actual conditions coincide compared with
Wellbore effect and crack and well, the coupled relation on stratum are not accounted in difference, and model, only can fracture
Response carries out deterministic simulation, so that the quantitative study that fracture parameters change influences on induction logging is hindered, influence
Induction logging fracture parameters quantitative assessment.
The content of the invention
To solve problem above, the invention provides a kind of crack induction logging response analogue means, to accurate
Quantitative simulation crack induction logging response.
According to one embodiment of present invention there is provided a kind of crack induction logging response analogue means, including：
Stratum simulated assembly, is made up of multiple conductive ring groups, conductive for simulated formation；
Results of fracture simulation component, is made up of wire netting group, is coupled with the stratum simulated assembly, for simulated formation
Crack；
Induction logging simulated assembly, modeling logging instrument, for carrying out formation fracture induction logging measurement；
Well simulated assembly, through the wire netting group and multiple conductive ring groups, for simulating borehole environment.
According to one embodiment of present invention, the conductive ring group is made up of annular concentric conducting ring, each annular
Conducting ring concatenates standard resistance box to realize that each conductive loop resistance is controllable.
According to one embodiment of present invention, each conductive ring group is by being fixed on same insulation board, with pre-
Multiple concentric conducting rings of determining deviation arrangement are constituted.
According to one embodiment of present invention, the wire netting group includes multiple wire nettings, the gold of the wire netting
The size for belonging to spacing between the diameter of silk, wire and the wire netting is adjustable.
According to one embodiment of present invention, the wire netting group is connected with the conductive ring group by predetermined angle,
Coupled to simulated formation with crack.
According to one embodiment of present invention, the induction logging simulated assembly runs through the conductive ring group and described
The center of wire netting group.
According to one embodiment of present invention, the well simulated assembly is the pipe of filling different resistivity conducting resinl
Shape part.
According to one embodiment of present invention, the tubular part is polyvinyl chloride pipe.
According to one embodiment of present invention, the analogue means also includes being used to hang and the fixed sensing is surveyed
The suspension fixed component of well simulated assembly.
According to one embodiment of present invention, the analogue means also includes being used to gathering and recording well logging sensing letter
Number signal acquisition part.
Beneficial effects of the present invention：
The present invention can quantitatively determine induction logging response feature in crack under different parameters, set up fracture parameters and quantify
Evaluation model, and then fracture evaluation is realized by induction logging data.
Other features and advantages of the present invention will be illustrated in the following description, also, partly from specification
In become apparent, or by implement the present invention and understand.The purpose of the present invention and other advantages can pass through
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing required in description of the prior art does simple introduction：
Fig. 1 is a kind of crack induction logging response analogue means structural representation according to an embodiment of the invention
Figure；
Fig. 2 is conductive ring group structural representation according to an embodiment of the invention, and
Fig. 3 is conductive mesh structural representation according to an embodiment of the invention；
Wherein, 1. wire netting；2. conducting ring；3. induction logging instrument；4. chain connected nut；5. logging cable；6.
Top sheave；7. support；8. lower sheave support；9. lower sheave；10. computer；11. induction logging collecting part；
12. winch；13. conductive mesh retained part；14. conducting resinl；15.PVC is managed；16. transverse conductance silk；17. longitudinal direction
Conductive filament；18. insulation board.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, whereby to the present invention how
Application technology means solve technical problem, and reach the implementation process of technique effect and can fully understand and real according to this
Apply.As long as it should be noted that conflict is not constituted, in each embodiment and each embodiment in the present invention
Each feature can be combined with each other, and the technical scheme formed is within protection scope of the present invention.
As shown in figure 1, the crack induction logging response analogue means of the present invention includes stratum simulated assembly, crack
Simulated assembly, induction logging simulated assembly and well simulated assembly.Wherein, stratum simulated assembly is by multiple conductions
Ring group is constituted, conductive for simulated formation；Results of fracture simulation component is made up of wire netting group, with stratum simulated assembly
Coupling, for simulated formation crack；Induction logging simulated assembly modeling logging instrument (usual induction logging mould
Actual logger can directly be chosen by intending component), for carrying out formation fracture induction logging measurement；Well mould
Intend component and pass through wire netting group and multiple conductive ring groups, for simulating borehole environment.
The crack induction logging response analogue means simple structure, it is easy to accomplish, by adjusting multiple conductive ring groups
Parameter it is conductive to simulate different resistivity stratum, simulate different situations by adjusting the parameter of wire netting group
Crack, so as to quantitatively determine the crack induction logging response feature under different parameters, sets up fracture parameters and determines
Evaluation model is measured, and then fracture evaluation is realized by induction logging data.Meanwhile, analogue means of the invention
It can be used for the research and development of induction logging instrument, scale, and induction well logging method principle demonstration teaching.
In one embodiment of the invention, conductive ring group is made up of annular concentric wire, each conducting ring string
Standard resistance box is connect to realize that each conductive loop resistance is controllable.
In one embodiment of the invention, each conductive ring group is by being fixed on same insulation board 18, with pre-
Multiple concentric conducting rings 2 of determining deviation arrangement are constituted, as shown in Figure 3.The conductive effect on stratum can with it is equivalent into
The conductive effect superposition of multiple insulation boards with conductive filament.The center of induction logging instrument 3 is placed in conduction during measurement
Ring group center.By adjusting the resistivity of conducting ring 2, different basement rock resistivity fracture stratum can be simulated
The influence of induction logging response, solves crack induction logging response feature under different basement rock resistivity conditions and quantifies
Analogue measurement problem.
Concentric conducting ring 2 fixed on insulation board 18 is produced on, carrying out simulated formation conduction with determining deviation arrangement imitates
Should, the equivalent formation conductivity of conduction ring group can be calculated according to following formula with one heart：
Wherein, σaFor the equivalent resistivity of conductive ring group, giCell rings for i-th of conducting ring position are several
What factor, DiFor i-th of conductive ring diameter, RiFor i-th of conducting ring series resistor value.Adjust conducting ring straight
Footpath, spacing make multigroup conducting ring equivalent space resistivity be equal to formation resistivity.So, conductive ring group can be used
Equivalent simulation different resistivity stratum.
In one embodiment of the invention, wire netting group includes multiple wire nettings 1, and wire netting 1 is by wire
Braiding is made, and the size of spacing and wire netting between the diameter of wire, wire is adjustable.Specifically, such as
Shown in Fig. 2, square conductive wire netting 1, metal are woven using transverse conductance silk 16 and longitudinal conductive filament 17
Wire side resistivity can be calculated according to surface resistivity formula, adjustment wire diameter dwAnd wire spacing hwSo that
Wire netting resistivity is equal to given crack resistivity.So, the wire netting equivalent simulation of different resistivity can be used
The crack of different resistivity in stratum.Different development lengths can be simulated by adjusting the size of conductive metal mesh to split
The log response of seam.Multiple wire nettings are set, you can to simulate the crack in multiple stratum.
In one embodiment of the invention, wire netting group is connected with conductive ring group by predetermined angle, to simulate
Stratum is coupled with crack.Specifically, wire netting 1 with the concentric contact position of conducting ring 2 is by conducting resin adhesion or passes through
Metal welds together, with the coupling in simulated formation and crack.As shown in figure 1, wire netting 1 is by clamper 13
It is fixed, the concentric conducting ring 2 of the wire netting 1 of simulation fracture and simulated formation is intercoupled welding by angle α,
Using in simulated formation with stratum angle as α crack.For other inclination angle cracks, different angle moulds can be made
Type is simulated.
In one embodiment of the invention, induction logging simulated assembly 3 runs through conductive ring group and wire netting group
Center, as shown in Figure 1.The feelings having in crannied stratum can be stretched into analogue inductive logger by so setting
Condition.
In one embodiment of the invention, well simulated assembly 15 is filling different resistivity conducting resinl 14
Tubular structure.The tubular structure includes polyvinyl chloride pipe (pvc pipe).The conductive pvc pipe simulation well,
Conducting resinl is wherein filled, conducting resinl resistivity is equal to mud resistivity in well.The conduction of well will be simulated
Pvc pipe is placed in the center of conducting ring 2 and wire netting group, and induction logging simulated assembly 3 is arranged at into conductive PVC
Tube hub, completes fracture formation induction logging modelling.
For induction logging simulated assembly 3 is fixed in well simulated assembly 15, the analogue means also includes using
In the suspension fixed component for hanging and fixing induction logging instrument.Specifically, as shown in figure 1, the suspension is fixed
Part includes logging cable 5, support 7, top sheave 6, lower sheave 9, lower sheave support 8 and winch 12,
Top sheave 6 is fixed on support 7, lower sheave 9 is fixed on lower sheave support 8, passes through chain connected nut
4 link logging cables 5 and induction logging instrument 3, the other end of logging cable 5 bypass top sheave 6, lower sheave 9
The signal acquisition part of well logging induced signal is connected to gather and recorded by winch 12.The signal acquisition part
Part is including induction logging instrument ground signal acquisition system 11 and for handling, the computer 10 of data storage.
Induction logging response analogue means in crack of the present invention, simple structure, it is easy to accomplish, it can pass through
The spacing adjusted between the conductive wire diameter and conductive wire of wire netting 1 is split to simulate different resistivity
The induction logging response of seam；Different angle crack (such as water is simulated by adjusting wire netting and multigroup conducting ring angle
Flush joint, oblique seam, upright seam) log response；Split by adjusting the different development lengths of wire netting size simulation
Stitch log response；Different spacing crack group log responses are simulated by adjusting different metal net spacing；Pass through adjustment
Crack response characteristic under the conditions of the different mud of conducting resinl resistivity simulation of mud is simulated, by adjusting conducting ring electricity
Resistance rate simulates the influence of different basement rock resistivity fracture formation induction log responses, realizes different crack ginsengs
Number induction logging response feature quantitative simulation measurement problem.
The measurement result of the present invention can quantitatively determine induction logging response feature in crack under different parameters, and foundation is split
Parameter quantitative evaluation model is stitched, and then fracture evaluation is realized by induction logging data.
When using analogue means work, induction log tool 3 is controlled to be located at simulation well by winch 12 first
The bottom of eye (pvc pipe) 15.By induction logging signal acquisition part 11, powered to induction log tool 3,
Alternating current in induction log tool 3 in transmitting coil is in space excitation electromagnetic field, and the electromagnetic field will be in phase mutual coupling
Induced-current is produced in the wire netting 1 of the simulation fracture of conjunction and the conducting ring 2 of multigroup simulated formation, the induced electricity
The size of stream and the resistivity of conductive metal mesh 1, the length of wire netting 1, the resistivity of conducting ring 2, both angle αs,
The resistivity of conducting resinl 14 for simulating well is related.The induced-current will excite secondary electromagnetic field in space, secondary
The sensed well logging simulated assembly 3 receiving coil detection of electromagnetic field signal, and then sensed logging signal collecting part
Collection, handles software records by existing induction logging in computer 10 and stores.Surveyed this completes sensing
Well simulated assembly 3 is measured in pvc pipe bottom depth point, then by winch 12 by induction logging instrument 3
Slowly lifted in pvc pipe, complete induction logging response measurement at different depth point in whole model, pass through meter
The record storage of calculation machine 10 is got off, and so just completes the simulation of induction logging response under single fracture parameters.
Both making different resistivity wire netting 1, the multigroup conducting ring 2 of different resistivity, different angle models,
Different length of side square-shaped metal nets 1, the model of different resistivity conducting resinl 14, you can the different crack resistivity of simulation,
Different Strata resistivity, different fracture dips, different fracture penetrations and different mud resistivity model senses
Answer logging response character.
While it is disclosed that embodiment as above, but described content is only to facilitate understand the present invention
And the embodiment used, it is not limited to the present invention.Technology people in any the technical field of the invention
Member, on the premise of spirit and scope disclosed in this invention are not departed from, can implementation formal and details
On make any modification and change, but the scope of patent protection of the present invention still must be with appended claims institute
The scope defined is defined.
Claims (10)
1. a kind of crack induction logging response analogue means, including：
Stratum simulated assembly, is made up of multiple conductive ring groups, conductive for simulated formation；
Results of fracture simulation component, is made up of wire netting group, is coupled with the stratum simulated assembly, for simulated formation
Crack；
Induction logging simulated assembly, modeling logging instrument, for carrying out formation fracture induction logging measurement；
Well simulated assembly, through the wire netting group and multiple conductive ring groups, for simulating borehole environment.
2. analogue means according to claim 1, it is characterised in that the conductive ring group is by concentric ring
Shape conducting ring is constituted, and each annular conductive rings concatenate standard resistance box to realize that each conductive loop resistance is controllable.
3. analogue means according to claim 1 or 2, it is characterised in that each conductive ring group
The multiple concentric conducting rings arranged by being fixed on same insulation board, with preset space length are constituted.
4. the analogue means according to any one of claim 1-3, it is characterised in that the wire netting group
Including multiple wire nettings, spacing and the wire netting between the diameter of the wire of the wire netting, wire
Size it is adjustable.
5. analogue means according to claim 4, it is characterised in that the wire netting group is led with described
Electric ring group is connected by predetermined angle, is coupled to simulated formation with crack.
6. the analogue means according to any one of claim 1-5, it is characterised in that the induction logging
Simulated assembly is through the center of the conductive ring group and the wire netting group.
7. the analogue means according to any one of claim 1-6, it is characterised in that the well simulation
Component is the tubular part of filling different resistivity conducting resinl.
8. analogue means according to claim 7, it is characterised in that the tubular part is polychlorostyrene second
Alkene pipe.
9. analogue means according to claim 1, it is characterised in that the analogue means also includes using
In suspension and the suspension fixed component of the fixed induction logging simulated assembly.
10. analogue means according to claim 1, it is characterised in that the analogue means also includes using
In collection and the signal acquisition part of record well logging induced signal.
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| CN201610179062.2A CN107229083B (en) | 2016-03-25 | 2016-03-25 | A kind of crack induction logging response simulator |
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| CN201610179062.2A CN107229083B (en) | 2016-03-25 | 2016-03-25 | A kind of crack induction logging response simulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901230A (en) * | 2019-04-02 | 2019-06-18 | 中国科学院地质与地球物理研究所 | A kind of equipment for carrying out temperature correction and deep formation environmental simulation to induction logging instrument |
| CN113219141A (en) * | 2021-06-01 | 2021-08-06 | 盾构及掘进技术国家重点实验室 | Grooved pipe device for micro-fracture development characteristics in tunnel surrounding rock and monitoring method |
| CN114076781A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | Experimental device, system and method for simulating electrical logging response of stratum fracture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109901230A (en) * | 2019-04-02 | 2019-06-18 | 中国科学院地质与地球物理研究所 | A kind of equipment for carrying out temperature correction and deep formation environmental simulation to induction logging instrument |
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| CN114076781A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | Experimental device, system and method for simulating electrical logging response of stratum fracture |
| CN114076781B (en) * | 2020-08-20 | 2024-03-19 | 中国石油化工股份有限公司 | Experimental device, system and method for simulating electric logging response of formation fracture |
| CN113219141A (en) * | 2021-06-01 | 2021-08-06 | 盾构及掘进技术国家重点实验室 | Grooved pipe device for micro-fracture development characteristics in tunnel surrounding rock and monitoring method |
| CN113219141B (en) * | 2021-06-01 | 2023-03-14 | 盾构及掘进技术国家重点实验室 | Grooved pipe device for micro-fracture development characteristics in tunnel surrounding rock and monitoring method |
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