CN110389099A - The modification method and device of reservoir properties - Google Patents
The modification method and device of reservoir properties Download PDFInfo
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- CN110389099A CN110389099A CN201810368515.5A CN201810368515A CN110389099A CN 110389099 A CN110389099 A CN 110389099A CN 201810368515 A CN201810368515 A CN 201810368515A CN 110389099 A CN110389099 A CN 110389099A
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- 238000002715 modification method Methods 0.000 title claims abstract description 34
- 238000005266 casting Methods 0.000 claims abstract description 68
- 230000035699 permeability Effects 0.000 claims abstract description 62
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000084 colloidal system Substances 0.000 claims abstract description 15
- 238000003703 image analysis method Methods 0.000 claims abstract description 12
- 230000010412 perfusion Effects 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 claims description 51
- 230000006870 function Effects 0.000 claims description 40
- 239000011148 porous material Substances 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 14
- 238000001764 infiltration Methods 0.000 claims description 5
- 230000005055 memory storage Effects 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 24
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 229910001711 laumontite Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000004310 photopic vision Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
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Abstract
The present invention provides the modification method and device of a kind of reservoir properties, this method comprises: obtaining aobvious porosity-permeability function model of full-hole core according to the pressure mercury data of the full-hole core of the reservoir of low pressure colloid perfusion；According to the casting body flake data of full-hole core, pass through image analysis method, the aobvious seam Areal porosity and baste Areal porosity of full-hole core are obtained, aobvious seam Areal porosity is used to indicate the apertured ratio of institute, baste Areal porosity in casting body flake image and is used to indicate the ratio of baste in casting body flake image；According to aobvious seam Areal porosity and baste Areal porosity, the true porosity of full-hole core is obtained；According to aobvious porosity-permeability function model of true porosity and full-hole core, the amendment permeability of full-hole core is obtained.The modification method of reservoir properties provided by the invention can obtain the true porosity and permeability of reservoir, provide the foundation data for the exploration production of oil/gas well.
Description
Technical field
The present invention relates to oil gas development technology field more particularly to the modification methods and device of a kind of reservoir properties.
Background technique
The porosity of reservoir, permeability are to evaluate the important parameter of reservoir quality, and accuracy directly affects oil-gas exploration
The deployment of development plan.
In the prior art, rock core production plunger sample usually is drilled through from subsurface reservoir, experimental analysis storage is carried out with the sample
The porosity and permeability of layer.And for the sandy gravel materials cementing for laumontite, reservoir loose cementation is stored up from underground
When layer drills through rock core, since the decompression expansion rate of cement laumontite and glutenite particle makes rock core generate rupture；And it is making
Make the mechanical force that the techniques such as polishing cutting generate during plunger sample and cause glutenite particle loose or dislocation, forms crack.
Resulting crack is not the true hole of reservoir core, in turn results in the hole obtained with this plunger sample
Degree, permeability are far longer than actual numerical value, can not reflect true porosity, the permeability of reservoir.
Summary of the invention
The present invention provides the modification method and device of a kind of reservoir properties, can obtain the true porosity of reservoir and infiltration
Rate provides the foundation data for the exploration production of oil/gas well.
The first aspect of the present invention provides a kind of modification method of reservoir properties, comprising:
According to the pressure mercury data of the full-hole core of the reservoir of low pressure colloid perfusion, the aobvious hole of full-hole core is obtained
Degree-permeability function model；
The full-hole core is obtained by image analysis method according to the casting body flake data of the full-hole core
Aobvious seam Areal porosity and baste Areal porosity, the aobvious seam Areal porosity is used to indicate in casting body flake image the apertured ratio of institute,
The baste Areal porosity is used to indicate the ratio of baste in the casting body flake image；
According to the aobvious seam Areal porosity and baste Areal porosity, the true porosity of the full-hole core is obtained；
According to aobvious porosity-permeability function model of the true porosity and the full-hole core, obtain described complete
The amendment permeability of diameter rock core.
Optionally, described according to the aobvious seam Areal porosity and baste Areal porosity, obtain the true hole of the full-hole core
Degree, comprising:
According to the pressure mercury data of the full-hole core, the aobvious porosity of the full-hole core is obtained；
According to transformational relation, the aobvious seam Areal porosity and the baste Areal porosity of two-dimentional Areal porosity and three-dimensional apertures porosity,
Obtain the aobvious seam body opening rate and baste body opening rate of the full-hole core；
According to the aobvious porosity of the full-hole core, the aobvious seam body opening rate and baste body opening rate, obtain described complete straight
The true porosity of diameter rock core.
Optionally, described according to the aobvious porosity of the full-hole core, the aobvious seam body opening rate and baste body opening rate, it obtains
Take the true porosity of the full-hole core, comprising:
According to the average value of the aobvious porosity of the full-hole core and aobvious seam body opening rate, the full-hole core is obtained
Average pore；
According to the difference of the average pore and the baste body opening rate, the true hole of the full-hole core is obtained
Degree.
Optionally, described according to the aobvious seam Areal porosity and baste Areal porosity, obtain the true hole of the full-hole core
Degree, comprising:
According to the difference of aobvious the seam Areal porosity and baste Areal porosity, true seam Areal porosity is obtained；
According to transformational relation, the true seam Areal porosity of two-dimentional Areal porosity and three-dimensional apertures porosity, the full diameter rock is obtained
The true porosity of the heart.
Optionally, the casting body flake data according to the full-hole core, by image analysis method, described in acquisition
The aobvious seam Areal porosity and baste Areal porosity of full-hole core, comprising:
According to the feature and distinguishing mark in gap in the casting body flake and baste, the aobvious seam and the baste are obtained
Area；
According to the ratio of the area of the aobvious seam and the area of the casting body flake, the aobvious seam of the full-hole core is obtained
Areal porosity；
According to the ratio of the area of the baste and the area of the casting body flake, the baste of the full-hole core is obtained
Areal porosity.
Optionally, the pressure mercury data of the reservoir full-hole core according to the perfusion of low pressure colloid, obtains full-hole core
Aobvious porosity-permeability function model, comprising:
According to the pressure mercury data of the full-hole core, different size of hole is obtained to the contribution margin of permeability；
According to the contribution margin, the critical value of the aobvious hole and micropore is determined；
According to the permeability of multiple full-hole cores in the critical value and the pressure mercury data, obtain described complete
Aobvious porosity-permeability function model of diameter rock core.
Optionally, according to the contribution margin, the critical value of the aobvious hole and micropore is determined, comprising:
By contribution margin >=95% to permeability, pore size >=0.293um porosity value be determined as the aobvious hole and
The critical value of micropore.
The second aspect of the present invention provides a kind of correcting device of reservoir properties, comprising:
Aobvious porosity-permeability function model obtains module, the full diameter rock of the reservoir for being perfused according to low pressure colloid
The pressure mercury data of the heart obtains aobvious porosity-permeability function model of full-hole core；
Areal porosity obtains module, for the casting body flake data according to the full-hole core, by image analysis method,
The aobvious seam Areal porosity and baste Areal porosity of the full-hole core are obtained, the aobvious seam Areal porosity is used to indicate casting body flake image
The middle apertured ratio of institute, the baste Areal porosity are used to indicate the ratio of baste in the casting body flake image；
True porosity obtains module, for obtaining the full diameter rock according to the aobvious seam Areal porosity and baste Areal porosity
The true porosity of the heart；
It corrects permeability and obtains module, for aobvious porosity-infiltration according to the true porosity and the full-hole core
Saturating rate function model, obtains the amendment permeability of the full-hole core.
The third aspect of the present invention provides a kind of correcting device of reservoir properties, comprising: at least one processor and storage
Device；
The memory stores computer executed instructions；
At least one described processor executes the computer executed instructions of the memory storage, so that the reservoir properties
Correcting device execute the modification methods of above-mentioned reservoir properties.
The fourth aspect of the present invention provides a kind of computer readable storage medium, deposits on the computer readable storage medium
Computer executed instructions are contained, when the computer executed instructions are executed by processor, realize the amendment of above-mentioned reservoir properties
Method.
The present invention provides the modification method and device of a kind of reservoir properties, this method comprises: according to the perfusion of low pressure colloid
The pressure mercury data of the full-hole core of reservoir obtains aobvious porosity-permeability function model of full-hole core；According to full diameter
The casting body flake data of rock core obtains the aobvious seam Areal porosity and baste Areal porosity of full-hole core by image analysis method, shows
Seam Areal porosity is used to indicate the apertured ratio of institute, baste Areal porosity in casting body flake image and is used to indicate in casting body flake image
The ratio of baste；According to aobvious seam Areal porosity and baste Areal porosity, the true porosity of full-hole core is obtained；According to true porosity and
Aobvious porosity-permeability function model of full-hole core, obtains the amendment permeability of full-hole core.Storage provided by the invention
The modification method of layer physical property, can obtain the true porosity and permeability of reservoir, provide base for the exploration production of oil/gas well
Plinth data.
Detailed description of the invention
Fig. 1 is the flow diagram one of the modification method of reservoir properties provided by the invention；
Fig. 2 is the flow diagram two of the modification method of reservoir properties provided by the invention；
Fig. 3 is contribution Distribution value of the corresponding different size of hole of pressure mercury data to permeability of X reservoir core in A well
Figure；
Fig. 4 is aobvious porosity-permeability function model schematic diagram of X reservoir core in A well；
Fig. 5 is the exemplary diagram one of the casting body flake baste identification of X reservoir core in A well；
Fig. 6 is the exemplary diagram two of the casting body flake baste identification of X reservoir core in A well；
Fig. 7 is the flow diagram three of the modification method of reservoir properties provided by the invention；
Fig. 8 (1) is the porosity amendment front and back comparison diagram one of reservoir core in A well；
Fig. 8 (2) is the permeability amendment front and back comparison diagram one of reservoir core in A well；
Fig. 9 (1) is the porosity amendment front and back comparison diagram two in A well；
Fig. 9 (2) is the permeability amendment front and back comparison diagram two in A well；
Figure 10 is the structural schematic diagram one of the correcting device of reservoir properties provided by the invention；
Figure 11 is the structural schematic diagram two of the correcting device of reservoir properties provided by the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to this
Technical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
In following embodiments, gap, hole represent the hole formed in rock sample, in order to distinguish on rock sample face
Two holes and rock sample in three-dimensional pore space, two holes on rock sample face are just known as gap.
Fig. 1 is the modification method flow diagram one of reservoir properties provided by the invention, the execution of method flow shown in Fig. 1
Main body can be the correcting device of reservoir properties, and the correcting device of the reservoir properties can be by arbitrary software and or hardware realization.
As shown in Figure 1, the modification method of reservoir properties provided in this embodiment may include:
S101 obtains the aobvious of full-hole core according to the pressure mercury data of the full-hole core of the reservoir of low pressure colloid perfusion
Porosity-permeability function model.
For the core sample for the reservoir that the present embodiment uses for full-hole core, full-hole core is with existing CORING TECHNOLOGY
The rock core taken out from oily (gas) layer, without cutting and splitting point, whole section carries out the related parameter of analysis measurement for laboratory
Rock core.By using full-hole core, avoiding the mechanical force that the techniques such as polishing cutting generate in this present embodiment and causing rock
The false crack that stone particle loose or dislocation is formed；And after obtaining full-hole core, using low-pressure injection colloid in the present embodiment
Mode, to full-hole core sample infusion colloid, which is filled with is taken out from subterranean strata due to extraneous confining pressure due to rock core
Reduce the false crack generated, due to the mode using low-pressure injection colloid in the present embodiment, pressure is low, therefore colloid is filled
Crack be in obvious false crack caused by mechanical force or extraneous confining pressure.
Mercury-injection test is the important means of RESERVOIR PORE STRUCTURE research, and the porosity and permeability parameter of reservoir is characterization
The important parameter of reservoir oily.Mercury-injection test is carried out to the full-hole core of same lithology, wherein the specific step of Mercury-injection test
Suddenly in the prior art the step of it is identical, therefore not to repeat here.It can in the pressure mercury data for the full-hole core that Mercury-injection test obtains
The aobvious porosity for obtaining multiple full-hole cores, the minimum line distance according to the distinguishable photopic vision of physics principle human eye away from place is about
0.1mm, therefore in the case where microscope amplifies 200 times, minimal linear that human eye can be differentiated distance is 0.5um, i.e., will be
The minimum pore radius identified on body of casting body thin slice is 0.25um, and the hole by radius greater than 0.25um is determined as aobvious hole；It is aobvious
Porosity refers to the ratio of the volume of the volume and full-hole core more than the hole of default size；It can also obtain multiple complete straight
Multiple permeabilities of diameter rock core, permeability referred in the unit time, passed through the flow value of the mercury of unit volume rock.
By Mercury-injection test, according to pressure mercury data, can obtain same lithology multiple aobvious porositys and corresponding permeability
Value, according to the corresponding relationship, obtains aobvious porosity-permeability function model of full-hole core, which is used to indicate a certain
Relationship between the aobvious porosity and permeability of the rock of lithology.
S102 obtains the aobvious of full-hole core by image analysis method according to the casting body flake data of full-hole core
Areal porosity and baste Areal porosity are stitched, aobvious seam Areal porosity is used to indicate the apertured ratio of institute, baste face in casting body flake image
Rate is used to indicate the ratio of baste in casting body flake image.
Casting body flake is that coloured liquid glue is injected to blowhole space under vacuum pressed, is ground after liquid adhesive curing
At petrographic thin section.The coloured liquid glue due under stress, can both filling into the baste of rock core, also can be filled to
It, can be with effective district parting gap and rock matrix in casting body flake image in the true hole of rock core.Wherein, according to distinguishing
Aobvious seam Areal porosity can be obtained by having the gap in the image, specifically, aobvious seam Areal porosity be apertured area in the image and
The ratio of the image area.
By image analysis method, not filling out property, omnidirectional, the development of grain edge, regular recoverable feature according to baste can
The baste in having the gap in the image is distinguished, baste Areal porosity can be obtained, baste Areal porosity is the face of baste in the image
The long-pending ratio with the image area.
Optionally, in the present embodiment, default gap value can be set according to the size in gap in the casting body flake image, it will
It is known as effective gap and effective baste greater than the gap for presetting gap value, when obtaining aobvious seam Areal porosity and baste Areal porosity, meter
The ratio in effective gap or effective baste and the image area is calculated, so that two porositys obtained are more accurate.
S103 obtains the true porosity of full-hole core according to aobvious seam Areal porosity and baste Areal porosity.
True porosity is to be not due to caused by external environment, due to the hole of rock itself generation in full-hole core
Volume accounts for the ratio of the total volume of rock.In the present embodiment, a kind of implementation of the true porosity of full-hole core is obtained are as follows: root
According to the pressure mercury data of full-hole core, the aobvious porosity of rock core is obtained；It is closed according to the conversion of two-dimentional Areal porosity and three-dimensional apertures porosity
System obtains the baste body opening rate obtained by image；The difference of aobvious porosity and baste body opening rate is determined as full-hole core
True porosity.
Another implementation are as follows: according to the feature really stitched in casting body flake image, true seam Areal porosity is directly acquired,
In really stitch Areal porosity acquisition modes it is identical as the mode of above-mentioned acquisition baste Areal porosity, therefore not to repeat here；According to two-dimensional surface
The transformational relation of porosity and three-dimensional apertures porosity obtains the true seam body opening rate obtained by image；True seam body opening rate is determined as complete straight
The true porosity of diameter rock core.
Another implementation are as follows: according to the aobvious seam Areal porosity and baste Areal porosity of above-mentioned acquisition, true seam Areal porosity is obtained,
Specifically, obtaining the true seam body opening rate obtained by image further according to the transformational relation of two-dimentional Areal porosity and three-dimensional apertures porosity；It will be true
Seam body opening rate is determined as the true porosity of full-hole core.
Another implementation are as follows: according to the aobvious seam Areal porosity and baste Areal porosity of above-mentioned acquisition and two-dimentional Areal porosity with
The transformational relation of three-dimensional apertures porosity obtains aobvious seam body opening rate and baste body opening rate respectively；According to the pressure mercury data of full-hole core,
Obtain the aobvious porosity of rock core；According to the average value of aobvious porosity and aobvious seam body opening rate, the average pore of full-hole core is obtained
The difference of the average pore and baste body opening rate is determined as true porosity by degree.The present embodiment is to the tool for obtaining true porosity
Body mode is with no restrictions.
S104 obtains full-hole core according to aobvious porosity-permeability function model of true porosity and full-hole core
Amendment permeability.
It is the true porosity of full-hole core by the true porosity of above-mentioned acquisition, which is substituted into aobvious hole
In degree-permeability function model, the corresponding amendment permeability of full-hole core is obtained, is the true permeability of rock core.
The present embodiment provides a kind of modification methods of reservoir properties, this method comprises: the reservoir being perfused according to low pressure colloid
Full-hole core pressure mercury data, obtain aobvious porosity-permeability function model of full-hole core；According to full-hole core
Casting body flake data the aobvious seam Areal porosity and baste Areal porosity of full-hole core are obtained by image analysis method, show seam face
Porosity is used to indicate the apertured ratio of institute, baste Areal porosity in casting body flake image and is used to indicate baste in casting body flake image
Ratio；According to aobvious seam Areal porosity and baste Areal porosity, the true porosity of full-hole core is obtained；According to true porosity and Quan Zhi
Aobvious porosity-permeability function model of diameter rock core, obtains the amendment permeability of full-hole core.Firstly, since the present embodiment
The rock sample used just has modified porosity and the infiltration of rock core for the full-hole core after low-pressure injection from sample selection
Rate；Secondly, the true porosity and permeability of reservoir rock is obtained by the combination of two-dimentional porosity and three-dimensional apertures porosity,
It provides the foundation data for the exploration production of oil/gas well.
It is described in detail below with reference to modification method of the Fig. 2 to reservoir properties provided by the invention, Fig. 2 mentions for the present invention
The flow diagram two of the modification method of the reservoir properties of confession, as shown in Fig. 2, the amendment side of reservoir properties provided in this embodiment
Method includes:
S201 obtains different size of hole to the contribution margin of permeability according to the pressure mercury data of full-hole core.
According to pressure mercury data, the pore size distribution figure of rock core can be obtained, according to different size of hole to permeability
Contribution margin.Such as: Fig. 3 is contribution margin point of the corresponding different size of hole of pressure mercury data to permeability of X reservoir core in A well
Butut, abscissa are contribution margin of the different size of hole to permeability, and ordinate is shared by corresponding hole under the contribution margin
Percentage composition.
S202 determines the critical value of aobvious hole and micropore according to contribution margin.
For convenience of calculation, by be more than using contribution margin 95% the corresponding radius size of hole as aobvious hole and micropore
Critical value, specifically, the critical value is 0.293um, i.e., radius is aobvious hole greater than the hole of 0.293um.
S203 obtains full-hole core according to the permeability of multiple full-hole cores in critical value and pressure mercury data
Aobvious porosity-permeability function model.
According to the critical value of aobvious hole and micropore, the aobvious porosity in multiple full-hole core samples is obtained, according to more
The relationship between aobvious porosity and corresponding permeability in a rock core, obtains aobvious porosity-permeability letter of full-hole core
Exponential model.Fig. 4 is aobvious porosity-permeability function model schematic diagram of X reservoir core in A well.Aobvious hole in the present embodiment
With abscissa to show porosity in degree-permeability function model, ordinate is permeability；Aobvious porosity-permeability functional relation
Be expressed as linear relationship, it may occur to persons skilled in the art that be that aobvious hole can also be indicated using other kinds of functional relation
Porosity-permeability functional relation.
S204 obtains the area of aobvious seam and baste according to the feature and distinguishing mark in gap in casting body flake and baste.
Fig. 5 is the exemplary diagram one of the casting body flake baste identification of X reservoir core in A well, as shown in figure 5, according to gap and
The feature of baste in black or Dark grey as rock core, and has continuity；Gap is generally white wire strip, dotted, and
Baste has not filling out property, omnidirectional, the development of grain edge, regular recoverable feature, and aobvious gap and vacation are identified in casting body flake image
Seam obtains the area that seam and baste are shown in casting body flake image further according to the calculation of area of the prior art respectively.In order to more
Baste and rock core are clearly distinguished, binary conversion treatment can be carried out to image, Fig. 6 is the casting body flake baste of X reservoir core in A well
The exemplary diagram two of identification, as shown in fig. 6, baste and rock core in casting body flake image can clearly be distinguished, so that obtaining
Seam is shown in the casting body flake image taken and the area of baste is more accurate.
S205 obtains the aobvious seam Areal porosity of full-hole core according to the ratio of the area of aobvious seam and the area of casting body flake；
According to the ratio of the area of baste and the area of casting body flake, the baste Areal porosity of full-hole core is obtained.
After obtaining the area for showing seam and baste in casting body flake image, the area of area and casting body flake further according to aobvious seam
Ratio, the area of baste and the ratio of area of casting body flake obtain aobvious seam Areal porosity and baste Areal porosity respectively.
S206 obtains the aobvious porosity of full-hole core according to the pressure mercury data of full-hole core.
Wherein, after obtaining the critical value of aobvious hole and micropore, the aobvious porosity of full-hole core can be obtained, is obtained
Take mode identical as the mode of above-mentioned acquisition porosity, this will not be repeated here.
S207 is obtained according to two-dimentional Areal porosity and the transformational relation of three-dimensional apertures porosity, aobvious seam Areal porosity and baste Areal porosity
The aobvious seam body opening rate and baste body opening rate of full-hole core.
Specifically, in the present embodiment, it, will according to the transformational relation of two-dimentional Areal porosity and three-dimensional apertures porosity in the prior art
Two-dimensional face porosity is converted to three-dimensional porosity, can obtain by the aobvious seam body opening rate and baste body of casting body flake acquisition
Porosity.
S208 obtains full-hole core according to the aobvious porosity of full-hole core, aobvious seam body opening rate and baste body opening rate
True porosity.
Specifically, can be thin according to the aobvious porosity of the full-hole core obtained by pressure mercury data and by the body of casting in the present embodiment
The aobvious seam body opening rate of the three-dimensional that piece obtains, seeks the average value of the two, the average pore of full-hole core is obtained, in conjunction with two kinds of sides
The aobvious porosity that method is sought is more accurate.
Further according to the difference of average pore and three-dimensional baste body opening rate, the true porosity of full-hole core is obtained.
S209 obtains full-hole core according to aobvious porosity-permeability function model of true porosity and full-hole core
Amendment permeability.
Wherein, S209 specifically can refer to the associated description of the S104 in above-described embodiment, and therefore not to repeat here.
In the present embodiment, aobvious porosity-permeability function model is obtained according to pressure mercury data, rock is obtained according to casting body flake
The aobvious seam Areal porosity of heart two dimension and baste Areal porosity are obtained further according to the transformational relation of two-dimentional Areal porosity and three-dimensional apertures porosity by casting
The aobvious seam body opening rate and baste body opening rate for the core three-dimensional that body thin slice obtains；According to the aobvious porosity of full-hole core and aobvious seam body
The average value of porosity and the difference of baste body opening rate, obtain the true porosity of full-hole core.Pressure mercury money is combined in the present embodiment
The true porosity for the rock core that material and casting body flake obtain, eliminates the influence of baste body opening rate, obtains the true of full-hole core
Real true porosity obtains full-hole core further according to aobvious porosity-permeability function model of true porosity and full-hole core
True permeability.
It is described in detail below with reference to modification method of the Fig. 7 to reservoir properties provided in this embodiment, Fig. 7 is the present invention
The flow diagram three of the modification method of the reservoir properties of offer, as shown in fig. 7, the amendment of reservoir properties provided in this embodiment
Method includes:
S301 obtains different size of hole to the contribution margin of permeability according to the pressure mercury data of full-hole core.
S302 determines the critical value of aobvious hole and micropore according to contribution margin.
S303 obtains full-hole core according to the permeability of multiple full-hole cores in critical value and pressure mercury data
Aobvious porosity-permeability function model.
S304 obtains the area of aobvious seam and baste according to the feature and distinguishing mark in gap in casting body flake and baste.
S305 obtains the aobvious seam Areal porosity of full-hole core according to the ratio of the area of aobvious seam and the area of casting body flake；
According to the ratio of the area of baste and the area of casting body flake, the baste Areal porosity of full-hole core is obtained.
S306 obtains true seam Areal porosity according to the difference of aobvious seam Areal porosity and baste Areal porosity.
In the present embodiment, the area really stitched is not directly obtained according to the feature really stitched, since casting body flake really stitches identification
In the process, inevitably there is error, and the feature of baste is obvious, more easily discriminates relative to true seam, in order to more precisely obtain
True seam Areal porosity obtains true seam Areal porosity using the difference of aobvious seam Areal porosity and baste Areal porosity.
S307 according to two-dimentional Areal porosity and the transformational relation of three-dimensional apertures porosity, really stitches Areal porosity, obtains full-hole core
True porosity.
Specifically, being converted in the mode and above-described embodiment of three-dimensional true seam body opening rate by two-dimensional true seam Areal porosity
Mode is identical, and this will not be repeated here.
S308 obtains full-hole core according to aobvious porosity-permeability function model of true porosity and full-hole core
Amendment permeability.
Wherein, S301-S305, S308 specifically can refer to S201-S205, S209 in above-described embodiment, not go to live in the household of one's in-laws on getting married herein
It states.
In the present embodiment, aobvious porosity-permeability function model is obtained according to pressure mercury data, according to aobvious seam Areal porosity and vacation
The difference of Areal porosity is stitched, true seam Areal porosity is obtained and obtains further according to the transformational relation of two-dimentional Areal porosity and three-dimensional apertures porosity by casting
The true seam body opening rate for the core three-dimensional that body thin slice obtains.The rock core for combining pressure mercury data and casting body flake to obtain in the present embodiment
True porosity eliminates the influence of baste body opening rate, the true true porosity of full-hole core is obtained, further according to true porosity
With aobvious porosity-permeability function model of full-hole core, the true permeability of full-hole core is obtained.
The modification method of the reservoir properties provided in above-described embodiment is applied but is not limited to laumontite cement gravel reservoir.
Fig. 8 (1) is the porosity amendment front and back comparison diagram one of reservoir core in A well, specifically, abscissa is porosity,
Ordinate is well depth, and different well depths can represent different lithology；Fig. 8 (2) is that the permeability of reservoir core in A well corrects front and back
Comparison diagram one；Specifically, abscissa is permeability, ordinate is well depth；Specifically, hole before being corrected in Fig. 8 (1), Fig. 8 (2)
Degree, permeability indicate that porosity, permeability are indicated with shape " star " after amendment with shape " circle ".
Porosity before and after the amendment of well A in Fig. 8 (1) is segmented expression respectively, is obtained Fig. 9 (1), Fig. 9 (1) is A well
In porosity amendment front and back comparison diagram two；It can be obtained by Fig. 9 (1), the porosity distributed area before amendment is 10%-16%, is repaired
Porosity distributed area after just is 9%-14%, and porosity correction value is 3-5%.
Permeability before and after the amendment of well A in Fig. 8 (2) is segmented expression respectively, is obtained Fig. 9 (2), Fig. 9 (2) is A well
In permeability amendment front and back comparison diagram two；It can be obtained by Fig. 9 (1), the Permeability Distribution section before amendment is 1-1000mD, amendment
Permeability Distribution section afterwards is 0.01-1mD, 2-3 order of magnitude of permeability correction value, so that the accuracy of permeability improves
Thousands of times.
The porosity to rock core, infiltration can be effectively obtained using the modification method of reservoir properties provided in this embodiment
Rate is modified, and acquisition is more bonded actual reservoir properties, and then is provided the foundation data for the exploration production of oil/gas well.
Further, the modification method of reservoir properties provided in this embodiment can be applied to areal different lithology
Reservoir core, and study the reservoir properties of the different lithology in the same area, available is a kind of lithology to another kind of rock
The transition physical property of property, and then provide fundamental basis to the exploration production of the oil/gas well in the region.
Figure 10 is the structural schematic diagram one of the correcting device of reservoir properties provided by the invention, as shown in Figure 10, the reservoir
The correcting device 400 of physical property includes: that aobvious porosity-permeability function model obtains module 401, Areal porosity obtains module 402, true
Porosity obtains module 403, amendment permeability obtains module 404.
Aobvious porosity-permeability function model obtains module 401, the full diameter of the reservoir for being perfused according to low pressure colloid
The pressure mercury data of rock core obtains aobvious porosity-permeability function model of full-hole core；
Areal porosity obtains module 402, for the casting body flake data according to full-hole core, by image analysis method,
The aobvious seam Areal porosity and baste Areal porosity of full-hole core are obtained, it is seamed that aobvious seam Areal porosity is used to indicate institute in casting body flake image
The ratio of gap, baste Areal porosity are used to indicate the ratio of baste in casting body flake image；
True porosity obtains module 403, for obtaining the true of full-hole core according to aobvious seam Areal porosity and baste Areal porosity
Porosity；
It corrects permeability and obtains module 404, for aobvious porosity-permeability letter according to true porosity and full-hole core
Exponential model obtains the amendment permeability of full-hole core.
Principle that the modification method of the correcting device of reservoir properties provided in this embodiment and above-mentioned reservoir properties is realized and
Technical effect is similar, and therefore not to repeat here.
Optionally, true porosity obtains module 403, specifically for the pressure mercury data according to full-hole core, obtains complete straight
The aobvious porosity of diameter rock core；
According to two-dimentional Areal porosity and the transformational relation of three-dimensional apertures porosity, aobvious seam Areal porosity and baste Areal porosity, obtain complete straight
The aobvious seam body opening rate and baste body opening rate of diameter rock core；
According to the aobvious porosity of full-hole core, aobvious seam body opening rate and baste body opening rate, the true hole of full-hole core is obtained
Porosity.
Optionally, true porosity obtains module 403, specifically for the aobvious porosity and aobvious seam body opening according to full-hole core
The average value of rate obtains the average pore of full-hole core；
According to the difference of average pore and baste body opening rate, the true porosity of full-hole core is obtained.
Optionally, true porosity obtains module 403, is specifically also used to the difference according to aobvious seam Areal porosity and baste Areal porosity
Value obtains true seam Areal porosity；
According to two-dimentional Areal porosity and the transformational relation of three-dimensional apertures porosity, Areal porosity is really stitched, obtains the true hole of full-hole core
Porosity.
Optionally, Areal porosity obtains module 402, specifically for the feature and identification according to gap in casting body flake and baste
Mark obtains the area of aobvious seam and baste；
According to the ratio of the area of aobvious seam and the area of casting body flake, the aobvious seam Areal porosity of full-hole core is obtained；
According to the ratio of the area of baste and the area of casting body flake, the baste Areal porosity of full-hole core is obtained.
Optionally, it shows porosity-permeability function model and obtains module 401, specifically for the pressure according to full-hole core
Mercury data obtains different size of hole to the contribution margin of permeability；
According to contribution margin, the critical value of aobvious hole and micropore is determined；
According to the permeability of multiple full-hole cores in critical value and pressure mercury data, the aobvious hole of full-hole core is obtained
Degree-permeability function model.
Optionally, it shows porosity-permeability function model and obtains module 401, being specifically also used to will be to the contribution of permeability
Value >=95%, pore size >=0.293um porosity value are determined as the critical value of aobvious hole and micropore.
Figure 11 is the structural schematic diagram two of the correcting device of reservoir properties provided by the invention, the amendment dress of the reservoir properties
Setting for example can be terminal device, such as smart phone, tablet computer, computer etc..As shown in figure 11, which repairs
Equipment 500 includes: memory 501 and at least one processor 502.
Memory 501, for storing program instruction.
Processor 502, for being performed the modification method for realizing the reservoir properties in the present embodiment, tool in program instruction
Body realization principle can be found in above-described embodiment, and details are not described herein again for the present embodiment.
The correcting device 500 of the reservoir properties can also include and input/output interface 503.
Input/output interface 503 may include independent output interface and input interface, or integrated input and defeated
Integrated interface out.Wherein, output interface is used for output data, and input interface is used to obtain the data of input, above-mentioned output
Data are the general designation exported in above method embodiment, and the data of input are the general designation inputted in above method embodiment.
The present invention also provides a kind of readable storage medium storing program for executing, it is stored with and executes instruction in readable storage medium storing program for executing, work as reservoir properties
At least one processor of correcting device when executing this and executing instruction, it is real when computer executed instructions are executed by processor
The modification method of reservoir properties in existing above-described embodiment.
The present invention also provides a kind of program product, the program product include execute instruction, this execute instruction be stored in it is readable
In storage medium.At least one processor of the correcting device of reservoir properties can read the execution from readable storage medium storing program for executing and refer to
It enables, at least one processor executes this and executes instruction so that the correcting device of reservoir properties is implemented above-mentioned various embodiments and mentioned
The modification method of the reservoir properties of confession.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of device or unit
Letter connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) or processor (English: processor) execute this hair
The part steps of bright each embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(English: Read-Only Memory, abbreviation: ROM), random access memory (English: Random Access Memory, letter
Claim: RAM), the various media that can store program code such as magnetic or disk.
In the embodiment of the above-mentioned network equipment or terminal device, it should be appreciated that processor can be central processing unit
(English: Central Processing Unit, referred to as: CPU), it can also be other general processors, digital signal processor
(English: Digital Signal Processor, abbreviation: DSP), specific integrated circuit (English: Application
Specific Integrated Circuit, referred to as: ASIC) etc..General processor can be microprocessor or the processor
It is also possible to any conventional processor etc..Hardware handles can be embodied directly in conjunction with the step of method disclosed in the present application
Device executes completion, or in processor hardware and software module combination execute completion.
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. a kind of modification method of reservoir properties characterized by comprising
According to the pressure mercury data of the full-hole core of the reservoir of low pressure colloid perfusion, aobvious porosity-infiltration of full-hole core is obtained
Saturating rate function model；
The aobvious of the full-hole core is obtained by image analysis method according to the casting body flake data of the full-hole core
Areal porosity and baste Areal porosity are stitched, the aobvious seam Areal porosity is used to indicate the apertured ratio of institute in casting body flake image, described
Baste Areal porosity is used to indicate the ratio of baste in the casting body flake image；
According to the aobvious seam Areal porosity and baste Areal porosity, the true porosity of the full-hole core is obtained；
According to aobvious porosity-permeability function model of the true porosity and the full-hole core, the full diameter is obtained
The amendment permeability of rock core.
2. modification method according to claim 1, which is characterized in that described according to the aobvious seam Areal porosity and baste face
Rate obtains the true porosity of the full-hole core, comprising:
According to the pressure mercury data of the full-hole core, the aobvious porosity of the full-hole core is obtained；
According to transformational relation, the aobvious seam Areal porosity and the baste Areal porosity of two-dimentional Areal porosity and three-dimensional apertures porosity, obtain
The aobvious seam body opening rate and baste body opening rate of the full-hole core；
According to the aobvious porosity of the full-hole core, the aobvious seam body opening rate and baste body opening rate, the full diameter rock is obtained
The true porosity of the heart.
3. modification method according to claim 2, which is characterized in that the aobvious hole according to the full-hole core
Degree, the aobvious seam body opening rate and baste body opening rate, obtain the true porosity of the full-hole core, comprising:
According to the average value of the aobvious porosity of the full-hole core and aobvious seam body opening rate, being averaged for the full-hole core is obtained
Porosity；
According to the difference of the average pore and the baste body opening rate, the true porosity of the full-hole core is obtained.
4. modification method according to claim 1, which is characterized in that described according to the aobvious seam Areal porosity and baste face
Rate obtains the true porosity of the full-hole core, comprising:
According to the difference of aobvious the seam Areal porosity and baste Areal porosity, true seam Areal porosity is obtained；
According to transformational relation, the true seam Areal porosity of two-dimentional Areal porosity and three-dimensional apertures porosity, the full-hole core is obtained
True porosity.
5. modification method according to claim 1-4, which is characterized in that described according to the full-hole core
Casting body flake data obtains the aobvious seam Areal porosity and baste Areal porosity of the full-hole core by image analysis method, packet
It includes:
According to the feature and distinguishing mark in gap in the casting body flake and baste, the face of the aobvious seam and the baste is obtained
Product；
According to the ratio of the area of the aobvious seam and the area of the casting body flake, the aobvious seam face of the full-hole core is obtained
Rate；
According to the ratio of the area of the baste and the area of the casting body flake, the baste face of the full-hole core is obtained
Rate.
6. modification method according to claim 1, which is characterized in that the full diameter of reservoir being perfused according to low pressure colloid
The pressure mercury data of rock core obtains aobvious porosity-permeability function model of full-hole core, comprising:
According to the pressure mercury data of the full-hole core, different size of hole is obtained to the contribution margin of permeability；
According to the contribution margin, the critical value of the aobvious hole and micropore is determined；
According to the permeability of multiple full-hole cores in the critical value and the pressure mercury data, the full diameter is obtained
Aobvious porosity-permeability function model of rock core.
7. modification method according to claim 6, which is characterized in that according to the contribution margin, determine the aobvious hole and
The critical value of micropore, comprising:
By contribution margin >=95% to permeability, pore size >=0.293um porosity value is determined as the aobvious hole and micropore
The critical value of gap.
8. a kind of correcting device of reservoir properties characterized by comprising
Aobvious porosity-permeability function model obtains module, the full-hole core of the reservoir for being perfused according to low pressure colloid
Mercury data is pressed, aobvious porosity-permeability function model of full-hole core is obtained；
Areal porosity obtains module, is obtained for the casting body flake data according to the full-hole core by image analysis method
The aobvious seam Areal porosity and baste Areal porosity of the full-hole core, the aobvious seam Areal porosity are used to indicate institute in casting body flake image
Apertured ratio, the baste Areal porosity are used to indicate the ratio of baste in the casting body flake image；
True porosity obtains module, for obtaining the full-hole core according to the aobvious seam Areal porosity and baste Areal porosity
True porosity；
It corrects permeability and obtains module, for aobvious porosity-permeability according to the true porosity and the full-hole core
Function model obtains the amendment permeability of the full-hole core.
9. a kind of correcting device of reservoir properties characterized by comprising at least one processor and memory；
The memory stores computer executed instructions；
At least one described processor executes the computer executed instructions of the memory storage, so that the amendment of reservoir properties fills
It sets perform claim and requires the described in any item methods of 1-7.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
It executes instruction, when the computer executed instructions are executed by processor, realizes the described in any item methods of claim 1-7.
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