CN106053231B - Shale anisotropy testing device and method under true triaxial condition - Google Patents
Shale anisotropy testing device and method under true triaxial condition Download PDFInfo
- Publication number
- CN106053231B CN106053231B CN201610565444.9A CN201610565444A CN106053231B CN 106053231 B CN106053231 B CN 106053231B CN 201610565444 A CN201610565444 A CN 201610565444A CN 106053231 B CN106053231 B CN 106053231B
- Authority
- CN
- China
- Prior art keywords
- shale
- bedding
- anisotropy
- lead wire
- resistivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
Abstract
The invention discloses a shale anisotropy testing device and a testing method thereof under a true triaxial condition, and aims to solve the problem that the anisotropy of shale under a true stress state cannot be truly reflected because a conventional shale anisotropy measuring method needs to be cored for at least 3 times. The device comprises: the pressure mechanism can apply different pressures along the three directions of XYZ, and can simulate the stress state of the shale under the formation condition more truly. The acoustoelectric testing mechanism can measure acoustic waves and resistivity at 0 degrees, 45 degrees and 90 degrees with the shale layer theory. And obtaining the acoustic and electrical anisotropy of the shale through the measured sound wave and resistivity information. The method has the advantages of simple rock sample acquisition, high success rate and real and reliable measurement result, and can provide reference basis for accurate estimation of the thickness of the reservoir, accurate estimation of water saturation, design of a fracturing construction scheme and the like.
Description
Technical Field
The invention belongs to the technical field of petroleum exploration, and particularly relates to a shale anisotropy testing device and a shale anisotropy testing method under a true triaxial condition.
Background
The shale is one of clay rocks, and is formed by small minerals after clay substances are compacted, dehydrated and recrystallized, the particle size of the clay substances is less than 1/256mm, and the clay substances have a lamellar or flake lining shape, strong brittleness and poor water permeability. Complex geological formations, depths of burial, complex ground stresses, and varying maturity are responsible for the strong anisotropy of shales. The method for accurately evaluating the anisotropy of the shale has important significance for knowing the estimation of the thickness and the water saturation of the shale gas reservoir, formulating proper closing pressure in fracturing construction, forming a criss-cross fracture network, and determining a proper safe density window so as to ensure the stability of a well wall and the like.
The shale can be regarded as a transverse isotropic medium, and the transverse isotropic medium contains 5 independent constants which are respectively C11、C13、C33、C44、C66Wherein, C11Is a first elastic constant, C13Is a fifth elastic parameter, C33Is a fourth elastic constant, C44Is a second elastic constant, C66Is the third elasticity parameter. At present, there are two main methods for obtaining 5 independent elasticity mechanics parameters of shale anisotropy. The first method is to take 3 pieces of plunger-shaped shale with bedding planes of 0 degrees, 45 degrees and 90 degrees, respectively put plunger samples into a core holder to apply corresponding pressure, measure the wave velocity of longitudinal and transverse waves, obtain 5 elastic parameters of the shale, and further obtain the anisotropic parameters of the shale according to the wave velocity of the longitudinal and transverse waves. The second method is to take only one columnar rock sample with parallel bedding, the first, second and third wave velocities are obtained by two sound wave receiving and transmitting devices at the top and bottom of the rock sample, and the fourth and fifth wave velocities are obtained by sound wave receiving and transmitting devices arranged on the side wall of the rock sample. However, the conventional method has certain disadvantages, and firstly aiming at the first method,at least 3 samples need to be prepared for the experiment, the brittleness of the shale is high, the clay mineral content is high, the hydration expansion is easy, water must be used in the coring process, the shale is easy to crack along the bedding surface, and a rock sample forming 45 degrees with the shale bedding surface is difficult to obtain, so that the experiment is difficult to carry out. The shale has strong heterogeneity, and the three samples have certain differences in mineral composition and rock mechanical properties, so that the anisotropy of the obtained shale can not truly reflect the properties of the rock. The second method adopts a sample to complete the measurement of five wave velocities, but the fourth wave velocity and the fifth wave velocity are measured under the stress-free condition, the shale microcracks develop, the cracks are in different forms under the in-situ condition, the closing degree of the cracks has important influence on the anisotropy of the shale, and in order to better guide the fracturing construction, the anisotropy of the shale is more truly reflected, and the measurement is carried out under the in-situ effective stress in the process of reflecting the anisotropy of the shale by using the sound wave velocity.
Disclosure of Invention
The invention aims to provide a shale anisotropy testing device and method for testing the shale anisotropy under the true triaxial condition, wherein the shale anisotropy testing device and method are used for testing the acoustic and electrical anisotropy of shale under the stress state of shale under the simulated formation condition.
The invention relates to a shale anisotropy testing device under a true triaxial condition, wherein the shale is in a cubic structure and comprises:
the pressurizing mechanism is used for respectively simulating the minimum horizontal main stress, the maximum horizontal main stress and the vertical stress under the formation condition to pressurize the test shale along the XYZ three directions;
the acoustic wave lead wire device comprises an acoustic wave lead wire seat and a resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 0 degrees to the shale bedding, an acoustic wave lead wire seat and a resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 90 degrees to the shale bedding, an acoustic wave lead wire seat which is respectively arranged on two opposite edges which are 45 degrees to the shale bedding, an acoustic wave transmitter which is connected with each acoustic wave lead wire seat through a lead wire, and a bridge instrument which is connected with each resistivity lead wire seat through a lead wire; the acoustic wave lead wire seat, the resistivity lead wire seat, the acoustic wave emitter and the bridge instrument form an acoustic testing mechanism;
the data processing mechanism is respectively connected with the acoustic wave transmitter, the bridge instrument and the oscilloscope;
the acoustic wave transmitter transmits acoustic waves, the acoustic waves are transmitted through the acoustic wave lead base in a vertical direction to the shale bedding surface, are transmitted in a parallel direction to the shale bedding surface and are transmitted at an angle of 45 degrees with the shale bedding surface, and the data processing mechanism acquires the longitudinal and transverse wave speed of the acoustic waves transmitted in the vertical direction to the shale bedding surface, the longitudinal and transverse wave speed of the acoustic waves transmitted in the parallel direction to the shale bedding surface and the longitudinal wave speed of the acoustic waves transmitted at an angle of 45 degrees with the shale bedding surface;
the electric bridge instrument obtains shale resistance in vertical bedding and shale resistance in parallel bedding through the resistivity lead seat, and the data processing mechanism obtains resistivity anisotropy indexes of the shale according to the shale resistance in vertical bedding and the shale resistance in parallel bedding.
Further, the pressurizing mechanism comprises pressurizing plates which are respectively arranged corresponding to 6 surfaces of the shale and pressurizing pumps which are in one-to-one correspondence with the pressurizing plates and drive the pressurizing plates.
Furthermore, wedge-shaped grooves are formed in the diagonal edges of the shale, and two sound wave lead seats which are arranged at an angle of 45 degrees with the shale layer are respectively arranged in the wedge-shaped grooves.
The invention relates to a testing method for a shale anisotropy testing device under a true triaxial condition, which is the shale anisotropy testing device under the true triaxial condition as claimed in any one of claims 1 to 4, and the testing method comprises the following steps:
selecting a shale stratum rock sample, and processing wedge-shaped grooves on the diagonal edges of the shale;
the pressurizing mechanism firstly applies pressure along the X axis; secondly, after the pressure is stabilized, the pressurizing mechanism loads pressure along the Z-axis direction; finally, the pressurizing mechanism loads pressure along the Y axis; after the loading of the pressurizing mechanism is finished, stabilizing for 30 minutes;
firstly, sound waves are transmitted along the direction of the vertical bedding shale, the waveform is displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the vertical bedding is obtained through calculationShale longitudinal and transverse wave velocity VP(90°)、VSH(90 °); secondly, sound waves are transmitted along the direction of the shale with parallel bedding, the wave forms are displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the longitudinal and transverse wave velocity V of the shale with parallel bedding is calculatedP(0°)、VSH(0 °); finally, the sound wave is transmitted along the direction forming 45 degrees with the shale layer, the waveform is displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the transmission speed V of the longitudinal wave when the angle forming 45 degrees with the shale layer is obtained through calculationP(45°)；
By said propagation velocity VP(0°)，VP(90°)，VP(45°)，VSH(90°)，VSH(0 °) calculation yielded 5 independent constants, C, describing the shale anisotropy11、C13、C33、C44、C66，
Wherein, C11Is a first elastic constant, C13Is a fifth elastic parameter, C33Is a fourth elastic constant, C44Is a second elastic constant, C66Is the third elasticity parameter. The corresponding 5 tensors are expressed as
The anisotropy of the macroscopic isotropic shale is expressed by longitudinal waves, transverse waves and 3 constants which are propagated along the direction of the symmetry axis, and the corresponding parameters are respectively
Vp(0°)，VSH(0°)，
measurement of resistivity anisotropy: firstly, two measuring ports of the electric bridge instrument are connected with a resistivity lead wire seat, firstly, the resistance of the shale with vertical bedding is obtained, and the resistivity (rho) of the shale with vertical bedding is obtained through calculationv) (ii) a Then obtaining the resistance of the shale with parallel bedding, and calculating the resistivity (rho) of the shale with parallel beddingh)；
According to the formula
And obtaining the resistivity anisotropy index lambda of the shale.
Further, the shale stratum rock sample is a cubic rock sample with the length, width and height of 6 cm.
Compared with the prior art, the shale anisotropy measuring device and method provided by the invention have the following advantages:
(1) effective stresses with different sizes can be applied along the three XYZ directions, the stress state of the shale under the formation condition can be reflected more truly, and therefore the measured shale anisotropy constant is more authentic.
(2) Traditional in-process of getting plunger form sample will use water, and the shale meets water and easily expands and causes to get the rhythm of the heart low, and the waste of rock specimen adopts the square rock specimen can be along the bedding and the perpendicular bedding face direct cutting squarely, and sample preparation method is simple.
Drawings
FIG. 1 is a schematic structural diagram of a shale anisotropic device under a true triaxial condition according to the present invention;
FIG. 2 is a schematic illustration of a shale sample during practice of the present invention;
FIG. 3 is a block diagram of computer software for acquisition control according to the present invention;
in the figure: 1. 4, 9, 11, 17, 18 acoustic wave lead wire seats; 2. an acoustic wave emitter; 3. 12, 22, 23, 24, 27 pressure pumps; 5. 10, 16, 19 compression plates; 6. 14, 20, 26 links; 7. 15, 21, 25, resistivity lead frame; 8. square shale rock samples; 13. an oscilloscope; 28. and (4) a computer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Example 1
This embodiment is used for shale anisotropic testing arrangement under the true triaxial condition, shale be the cube structure, include:
the pressurizing mechanism is used for respectively simulating the minimum horizontal main stress, the maximum horizontal main stress and the vertical stress under the formation condition to pressurize the test shale along the XYZ three directions;
the acoustic wave lead wire device comprises an acoustic wave lead wire seat and a resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 0 degrees to the shale bedding, an acoustic wave lead wire seat and a resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 90 degrees to the shale bedding, an acoustic wave lead wire seat which is respectively arranged on two opposite edges which are 45 degrees to the shale bedding, an acoustic wave transmitter which is connected with each acoustic wave lead wire seat through a lead wire, and a bridge instrument which is connected with each resistivity lead wire seat through a lead wire; the acoustic wave lead wire seat, the resistivity lead wire seat, the acoustic wave emitter and the bridge instrument form an acoustic testing mechanism;
and the data processing mechanism is respectively connected with the sound wave emitter, the bridge instrument and the oscilloscope.
The working mode of the embodiment is as follows:
firstly, a certain shale stratum rock sample is selected, the rock sample is processed into a square rock sample with the length, width and height of 6cm, and wedge-shaped grooves as shown in figure 2 are processed on the diagonal edges of the square sample. Square rock samples are put into 5, 10, 16 and 19 pressing plates, firstly, the pressing mechanisms 3 and 6 and the pressing mechanisms 20 and 23 simultaneously apply pressure along the X axis, after the pressure is stabilized, the pressing mechanisms 12 and 14 and the pressing mechanisms 26 and 27 apply pressure along the Z axis direction, and finally, the pressing mechanisms apply pressure along the Y axis. After the loading of the pressurizing mechanism is finished, the pressurizing mechanism is stabilized for 30 minutes. The sound wave transmitter transmits sound waves to the sound wave lead base 18 along the sound wave lead base 4 through the rock core, simultaneously, the waveform is displayed on an oscilloscope, the sound wave propagation time is recorded, and the longitudinal and transverse wave velocity V of the vertical bedding shale is calculatedP(90°)、VSH(90 °); the acoustic wave emitter 2 is propagated to the acoustic wave lead base 1 along the conducting wire, the acoustic wave is propagated to the acoustic wave lead base 11 along the bedding surface, and the oscillograph displays the wave form to obtain the longitudinal and transverse wave velocity V of the shale with parallel beddingP(0°)、VSH(0 °). The acoustic wave transmitter 2 transmits acoustic waves to the acoustic wave lead base 9 along the lead, the acoustic waves propagate to the acoustic wave lead base 17 along the angle of 45 degrees with the bedding, and the acoustic waves propagate to the oscilloscope 14 through the lead, so that the propagation velocity V of longitudinal waves at 45 degrees with the bedding is obtainedP(45°)。
Through VP(0°)，VP(90°)，VP(45°)，VSH(90°)，VSH(0 °) calculation yielded 5 independent constants, C, describing the shale anisotropy11、C13、C33、C44、C66Wherein, C11Is a first elastic constant, C13Is a fifth elastic parameter, C33Is a fourth elastic constant, C44Is a second elastic constant, C66Is the third elasticity parameter. The corresponding 5 tensors are expressed as
Furthermore, the proposed method of Thomsen in 1986 is to use longitudinal waves, transverse waves and 3 constants propagating along the symmetry axis to express the anisotropy of macroscopically isotropic shale. The corresponding parameters are respectively
Vp(0°)，VSH(0°)，
Measuring the resistivity anisotropy:
firstly, all the leads on the lead seats 1, 4, 9, 11, 17 and 18 are taken off, two measuring ports of the electric bridge instrument are connected with the resistivity lead seats 7 and 21 to obtain the resistance of the shale in the vertical bedding, and the resistivity (rho) of the shale in the vertical bedding is further calculatedv) (ii) a Connecting two measuring ports of the electric bridge instrument with the resistivity lead wire seats 15 and 25 to obtain the resistance of the shale with parallel bedding, and further obtain the resistivity (rho) of the shale with parallel beddingh) (ii) a According to the formula
And obtaining the resistivity anisotropy index lambda of the shale.
The above calculation part is completely completed by software programmed based on VB programming language.
Example 2
The test method for the shale anisotropy test device under the true triaxial condition in the embodiment is the test device for the shale anisotropy test device under the true triaxial condition in the embodiment, and the test method comprises the following steps:
selecting a shale stratum rock sample which is a cubic rock sample with the length, width and height of 6 cm. Processing wedge-shaped grooves on the diagonal edges of the shale;
the pressurizing mechanism firstly applies pressure along the X axis; secondly, after the pressure is stabilized, the pressurizing mechanism loads pressure along the Z-axis direction; finally, the pressurizing mechanism loads pressure along the Y axis; after the loading of the pressurizing mechanism is finished, stabilizing for 30 minutes;
firstly, sound waves are transmitted along the direction of the vertical bedding shale, the waveform is displayed on an oscilloscope, the sound wave transmission time is recorded, and the longitudinal and transverse wave velocity V of the vertical bedding shale is obtained through calculationP(90°)、VSH(90 °); secondly, sound waves are transmitted along the direction of the shale with parallel bedding, the wave forms are displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the longitudinal and transverse wave velocity V of the shale with parallel bedding is calculatedP(0°)、VSH(0 °); finally, the sound wave is transmitted along the direction forming 45 degrees with the shale layer, the waveform is displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the transmission speed V of the longitudinal wave when the angle forming 45 degrees with the shale layer is obtained through calculationP(45°)；
By said propagation velocity VP(0°)，VP(90°)，VP(45°)，VSH(90°)，VSH(0 °) calculation yielded 5 independent constants, C, describing the shale anisotropy11、C13、C33、C44、C66，
Wherein, C11Is a first elastic constant, C13Is a fifth elastic parameter, C33Is a fourth elastic constant, C44Is a second elastic constant, C66Is the third elasticity parameter. The corresponding 5 tensors are expressed as
The anisotropy of the macroscopic isotropic shale is expressed by longitudinal waves, transverse waves and 3 constants which are propagated along the direction of the symmetry axis, and the corresponding parameters are respectively
Vp(0°)，VSH(0°)，
In the formula, rho is the volume density, and the anisotropy of the shale under the true ground stress of the stratum can be obtained through the calculation;
measurement of resistivity anisotropy: firstly, two measuring ports of the electric bridge instrument are connected with a resistivity lead wire seat, firstly, the resistance of the shale with vertical bedding is obtained, and the resistivity (rho) of the shale with vertical bedding is obtained through calculationv) (ii) a Then obtaining the resistance of the shale with parallel bedding, and calculating the resistivity (rho) of the shale with parallel beddingh)；
According to the formula
And obtaining the resistivity anisotropy index lambda of the shale.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a shale anisotropic testing arrangement for under true triaxial condition, the shale be cube structure, its characterized in that, the length, width, the height of shale are 6cm, include:
the pressurizing mechanism is used for respectively simulating the minimum horizontal main stress, the maximum horizontal main stress and the vertical stress under the formation condition to pressurize the test shale along the XYZ three directions;
the acoustic wave lead wire tester comprises an acoustic wave lead wire seat and an electrical resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 0 degrees to the shale bedding, an acoustic wave lead wire seat and an electrical resistivity lead wire seat which are respectively arranged on two opposite surfaces which are 90 degrees to the shale bedding, an acoustic wave lead wire seat which is respectively arranged on two opposite edges which are 45 degrees to the shale bedding, an acoustic wave transmitter which is connected with each acoustic wave lead wire seat through a lead wire, and a bridge instrument which is connected with each electrical resistivity lead wire seat through a lead wire; the acoustic wave lead wire seat, the resistivity lead wire seat, the acoustic wave emitter and the bridge instrument form an acoustic testing mechanism;
the data processing mechanism is respectively connected with the acoustic wave transmitter, the bridge instrument and the oscilloscope;
the acoustic wave transmitter transmits acoustic waves, the acoustic waves are transmitted through the acoustic wave lead base in a vertical direction to the shale bedding surface, are transmitted in a parallel direction to the shale bedding surface and are transmitted at an angle of 45 degrees with the shale bedding surface, and the data processing mechanism acquires the longitudinal and transverse wave speed of the acoustic waves transmitted in the vertical direction to the shale bedding surface, the longitudinal and transverse wave speed of the acoustic waves transmitted in the parallel direction to the shale bedding surface and the longitudinal wave speed of the acoustic waves transmitted at an angle of 45 degrees with the shale bedding surface;
the electric bridge instrument obtains shale resistance in vertical bedding and shale resistance in parallel bedding through the resistivity lead seat, and the data processing mechanism obtains resistivity anisotropy indexes of the shale according to the shale resistance in vertical bedding and the shale resistance in parallel bedding.
2. The shale anisotropy testing apparatus according to claim 1, wherein the pressurizing mechanism comprises pressurizing plates respectively corresponding to 6 surfaces of the shale and pressurizing pumps corresponding to the pressurizing plates one by one and driving the pressurizing plates.
3. The shale anisotropy testing device under true triaxial conditions as claimed in claim 1, wherein the diagonal edges of the shale are provided with wedge-shaped grooves, and two acoustic wave lead seats forming an angle of 45 ° with the shale layer are respectively arranged in the wedge-shaped grooves.
4. The shale anisotropy testing apparatus for true triaxial conditions according to claim 1, wherein the data processing mechanism is a computer.
5. A test method for a shale anisotropy test device under a true triaxial condition is characterized in that,
the test method comprises the following steps:
selecting a shale stratum rock sample, and processing wedge-shaped grooves on the diagonal edges of the shale;
the pressurizing mechanism firstly applies pressure along the X axis; secondly, after the pressure is stabilized, the pressurizing mechanism loads pressure along the Z-axis direction; finally, the pressurizing mechanism loads pressure along the Y axis; after the loading of the pressurizing mechanism is finished, stabilizing for 30 minutes;
firstly, sound waves are transmitted along the direction of the vertical bedding shale, the waveform is displayed on an oscilloscope, the sound wave transmission time is recorded, and the longitudinal wave velocity V of the vertical bedding shale is obtained through calculationP(90 °) and vertical bedding shale transverse wave velocity VSH(90 °); secondly, sound waves are transmitted along the direction of the shale with parallel bedding, the wave forms are displayed on an oscilloscope at the same time, the sound wave transmission time is recorded, and the longitudinal wave velocity V of the shale with parallel bedding is calculatedP(0 degree), shear wave velocity V of parallel-layered shaleSH(0 °); last acoustic wavePropagating along the direction forming 45 degrees with the shale layer, simultaneously displaying the waveform on an oscilloscope, recording the propagation time of the sound wave, and calculating to obtain the propagation velocity V of the longitudinal wave when forming 45 degrees with the shale layerP(45°)；
By said propagation velocity VP(0°)，VP(90°)，VP(45°)，VSH(90°)，VSH(0 °) calculation yielded 5 independent constants, C, describing the shale anisotropy11、C13、C33、C44、C66，
Wherein, C11Is a first elastic constant, C13Is a fifth elastic parameter, C33Is a fourth elastic constant, C44Is a second elastic constant, C66Is a third elasticity parameter; the corresponding 5 tensors are expressed as
The anisotropy of the macroscopic isotropic shale is expressed by longitudinal waves, transverse waves and 3 constants which are propagated along the direction of the symmetry axis, and the corresponding parameters are respectively Vp(0°)，VSH(0°)，
In the formula, rho is the volume density, and the anisotropy of the shale under the true ground stress of the stratum can be obtained through the calculation;
measurement of resistivity anisotropy: firstly, two measuring ports of the electric bridge instrument are connected with a resistivity lead wire seat, firstly, the resistance of the shale with vertical bedding is obtained, and the resistivity (rho) of the shale with vertical bedding is obtained through calculationv) (ii) a Then obtaining the resistance of the shale with parallel bedding, and calculating the resistivity (rho) of the shale with parallel beddingh)；
According to the formulaAnd obtaining the resistivity anisotropy index lambda of the shale.
6. The testing method for the shale anisotropy testing apparatus under the true triaxial condition according to claim 5, wherein the shale formation rock sample is a cubic rock sample with length, width and height of 6 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565444.9A CN106053231B (en) | 2016-07-18 | 2016-07-18 | Shale anisotropy testing device and method under true triaxial condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565444.9A CN106053231B (en) | 2016-07-18 | 2016-07-18 | Shale anisotropy testing device and method under true triaxial condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106053231A CN106053231A (en) | 2016-10-26 |
| CN106053231B true CN106053231B (en) | 2020-01-10 |
Family
ID=57188036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610565444.9A Expired - Fee Related CN106053231B (en) | 2016-07-18 | 2016-07-18 | Shale anisotropy testing device and method under true triaxial condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106053231B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037129B (en) * | 2017-05-16 | 2023-04-25 | 长江大学 | Rock anisotropy measurement clamp and measurement method thereof |
| CN109145340A (en) * | 2017-06-28 | 2019-01-04 | 中国石油化工股份有限公司 | Calculate the method and computer readable storage medium of shale anisotropic parameters |
| CN107829727A (en) * | 2017-09-12 | 2018-03-23 | 中国石油天然气股份有限公司 | A kind of method and device for determining crustal stress |
| GB2580234B (en) * | 2017-10-04 | 2022-05-11 | Halliburton Energy Services Inc | Applying triaxial stresses to a core sample during perforation and flow testing |
| CN108387499B (en) * | 2018-02-08 | 2020-05-22 | 成都理工大学 | Rock underground in-situ multi-parameter anisotropy measuring device |
| CN108825223B (en) * | 2018-06-22 | 2021-10-22 | 西南石油大学 | Method for extracting bedding characteristics of shale stratum |
| CN108896742B (en) * | 2018-08-01 | 2023-09-29 | 中国华能集团有限公司 | System for quantitatively analyzing shale anisotropy and application method thereof |
| CN108982672B (en) * | 2018-09-12 | 2020-10-02 | 中国矿业大学 | Gas-solid coupled coal sample wave velocity anisotropy detection device and method |
| CN109001812B (en) * | 2018-09-12 | 2020-10-30 | 中国矿业大学 | True triaxial gas-liquid-solid coupling coal sample wave velocity anisotropy detection device and method |
| CN109187761A (en) * | 2018-09-12 | 2019-01-11 | 中国矿业大学 | A kind of the coal and rock anelasticity anisotropy detection device and method of gas-solid thermal coupling |
| CN109459496B (en) * | 2018-09-14 | 2019-11-08 | 中国石油大学(华东) | A kind of anisotropy acoustic velocity measurement device of the rectangular rock sample containing crack |
| CN111487287B (en) * | 2019-01-28 | 2023-05-26 | 中国石油天然气股份有限公司 | Method and device for determining resistivity anisotropy of rock core |
| US11353385B2 (en) | 2019-04-24 | 2022-06-07 | Saudi Arabian Oil Company | Testing petro-physical properties using a tri-axial pressure centrifuge apparatus |
| US11249065B2 (en) | 2019-04-24 | 2022-02-15 | Saudi Arabian Oil Company | Testing petro-physical properties using a tri-axial pressure centrifuge apparatus |
| CN110187008A (en) * | 2019-04-29 | 2019-08-30 | 中国科学院地理科学与资源研究所 | A kind of full elastic parameter detection device of lossless sound wave and method |
| CN110242290B (en) * | 2019-06-25 | 2022-09-02 | 中国石油集团川庆钻探工程有限公司 | Shale core bedding crack flow simulation evaluation device and method |
| CN110219631B (en) * | 2019-07-08 | 2020-12-25 | 西南石油大学 | Testing device and method for simulating fracturing well shut-in flow-back performance |
| CN110672926B (en) * | 2019-10-24 | 2021-08-10 | 河北工业大学 | Electrical material conductivity measuring device and measuring system suitable for different working conditions |
| CN111323487A (en) * | 2020-04-14 | 2020-06-23 | 中国石油大学(华东) | Device, system and method for measuring anisotropic sound velocity of rock |
| CN112268818B (en) * | 2020-11-11 | 2021-04-13 | 中国科学院地质与地球物理研究所 | Rock true triaxial controllable shock wave fracturing test system and method |
| CN113075045A (en) * | 2021-03-29 | 2021-07-06 | 绍兴文理学院 | True triaxial testing machine for realizing coordinated control of stress and rigidity and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132992A (en) * | 2013-02-20 | 2013-06-05 | 中国石油大学(北京) | Method and system for evaluating rock drillability anisotropy |
| CN104515738A (en) * | 2014-12-09 | 2015-04-15 | 中国石油大学(北京) | Rock anisotropy detection system and detection method |
| CN105092707A (en) * | 2015-07-10 | 2015-11-25 | 中国石油天然气集团公司 | Method and device for determining shale anisotropic parameters |
| CN105136362A (en) * | 2015-09-25 | 2015-12-09 | 中国石油大学(华东) | Measuring device and method based on rock wave velocity anisotropy determined ground stress direction |
| CN204964453U (en) * | 2015-10-07 | 2016-01-13 | 中国石油大学(华东) | Rock core velocity of sound anisotropic automatic measure mechanism |
| CN205879690U (en) * | 2016-07-18 | 2017-01-11 | 西南石油大学 | Be used for shale anisotropic testing arrangement under true triaxial condition |
| US9835746B2 (en) * | 2013-08-24 | 2017-12-05 | Schlumberger Technology Corporation | Formation stability modeling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547849B (en) * | 2016-03-01 | 2018-12-04 | 安徽理工大学 | Large scale stratiform pressure-bearing rock true triaxial adds unloading test device and test method |
-
2016
- 2016-07-18 CN CN201610565444.9A patent/CN106053231B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132992A (en) * | 2013-02-20 | 2013-06-05 | 中国石油大学(北京) | Method and system for evaluating rock drillability anisotropy |
| US9835746B2 (en) * | 2013-08-24 | 2017-12-05 | Schlumberger Technology Corporation | Formation stability modeling |
| CN104515738A (en) * | 2014-12-09 | 2015-04-15 | 中国石油大学(北京) | Rock anisotropy detection system and detection method |
| CN105092707A (en) * | 2015-07-10 | 2015-11-25 | 中国石油天然气集团公司 | Method and device for determining shale anisotropic parameters |
| CN105136362A (en) * | 2015-09-25 | 2015-12-09 | 中国石油大学(华东) | Measuring device and method based on rock wave velocity anisotropy determined ground stress direction |
| CN204964453U (en) * | 2015-10-07 | 2016-01-13 | 中国石油大学(华东) | Rock core velocity of sound anisotropic automatic measure mechanism |
| CN205879690U (en) * | 2016-07-18 | 2017-01-11 | 西南石油大学 | Be used for shale anisotropic testing arrangement under true triaxial condition |
Non-Patent Citations (7)
| Title |
|---|
| 一种定量评价碎屑岩储层各向异性的新方法;李潮流等;《地球物理学进展》;20121031;第2043-2050页 * |
| 不同围压和流体饱和状态下致密砂岩弹性各向异性特征;宋连腾等;《地球物理学报》;20150930;第3401-3411页 * |
| 基于直剪试验的页岩强度各向异性研究;衡 帅等;《岩石力学与工程学报》;20140531;第874-883页 * |
| 某水电站坝址千枚岩的岩石强度各向异性特征;郑达等;《成都理工大学学报(自然科学版)》;20110831;第438-442页 * |
| 页岩力学参数各向异性研究;王倩等;《天然气工业》;20121231;第62-66页 * |
| 页岩各向异性特征的试验研究;衡帅等;《岩土力学》;20150331;第609-616页 * |
| 饱和水致密砂岩电学参数对有效应力变化的响应;陈明君等;《地球物理学进展》;20141231;第1128-1132页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106053231A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106053231B (en) | Shale anisotropy testing device and method under true triaxial condition | |
| Wang et al. | Investigation of the P-and S-wave velocity anisotropy of a Longmaxi formation shale by real-time ultrasonic and mechanical experiments under uniaxial deformation | |
| CN103256046B (en) | Unconventionaloil pool hides method and the device that horizontal well stitches the simulation of long fracturing parameter entirely | |
| Wang et al. | Experimental study on cracking damage characteristics of a soil and rock mixture by UPV testing | |
| RU2636821C1 (en) | Method for determination of mechanical properties of reservoir rock | |
| CN105182424B (en) | A kind of method and apparatus based on patchy saturation quantitative forecast reservoir porosity | |
| Wu et al. | Shear-tensile fractures in hydraulic fracturing network of layered shale | |
| Wei et al. | Effect of crack aperture on P-wave velocity and dispersion | |
| Casteleyn et al. | An integrated study of the petrophysical properties of carbonate rocks from the “Oolithe Blanche” formation in the Paris Basin | |
| Amendt et al. | Mechanical characterization in unconventional reservoirs: a facies-based methodology | |
| CN104374827A (en) | Measuring method of anisotropy coefficient of transverse isotropic rock in-situ dynamic elasticity modulus | |
| CN205879690U (en) | Be used for shale anisotropic testing arrangement under true triaxial condition | |
| CN102156297A (en) | Fluid substitution method based on sandstone reservoir post-stack seismic data | |
| CN109187916B (en) | Continuous deep processing method and device for judging formation brittleness | |
| Yin et al. | Assessment of the geostress field of deep-thick gypsum cap rocks: A case study of Paleogene Formation in the southwestern Tarim Basin, NW China | |
| CN109459497B (en) | A kind of acoustic speed calculation method of the rock of transverse isotropy containing parallel fracture | |
| CN114626215A (en) | Rock slope modeling method based on discrete element and synthetic rock mass technology | |
| CN104484573B (en) | A kind of method of determination stratum stiffness coefficient | |
| Su et al. | A comprehensive methodology of evaluation of the fracability of a shale gas play | |
| Gokaraju et al. | Evaluation of fracture toughness and its impact on hydraulic fracturing | |
| Dande et al. | The effect of proppant-filled fractures on the elastic properties of 3D-printed rock models | |
| Amalokwu | Saturation effects on frequency-dependent seismic anisotropy in fractured porous rocks | |
| Li et al. | Anisotropic rock physics models for interpreting pore structures in carbonate reservoirs | |
| Purcell et al. | Velocity measurements in reservoir rock samples from the SACROC unit using various pore fluids, and integration into a seismic survey taken before and after a CO2 sequestration flood | |
| Tillotson | A laboratory investigation of frequency-dependent seismic anisotropy in fractured rocks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 Termination date: 20200718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |