CN106226400A - Shale anisotropy measurement device and measuring method - Google Patents

Abstract

The invention provides a shale anisotropy measuring device and a measuring method, which solves the problem that the prior art only studies the shale isotropy and cannot meet the actual engineering requirements in the exploration and development process. The shale anisotropy measurement device provided by the present invention includes a bracket for supporting the core column to be tested, the core column to be tested is a cylinder, and is taken from a shale reservoir core; multiple probes are used to transmit ultrasonic waves to the core to be tested column, and is used to receive the ultrasonic wave propagating in the core column to be tested, the probe is fixed on the side surface of the core column to be tested by means of a bracket, and multiple probes are arranged along the circumferential direction of multiple cross-sections of the core column to be tested; the ultrasonic signal is generated The device is used to excite the probe with ultrasonic signals, so that the probe emits ultrasonic waves to the core column to be tested; the ultrasonic wave velocity testing device is used to detect the ultrasonic waves received by the probe to obtain wave velocity information.

Description

Shale anisotropy measuring device and measuring method

technical field

The invention relates to object performance measurement technology, in particular to a shale anisotropy measurement device and measurement method.

Background technique

The exploration and development of shale gas has aroused widespread interest worldwide, and has been listed as an important strategy for the development of oil and gas resources in my country.

Shale generally has thin sheet-like or thin-sheet-like joints and has natural strong anisotropy. The exploitation of shale gas is mainly through fracturing to form a network of fractures in the shale, so that the gas can seep out. In order to form a more reasonable fracture network structure, it is necessary to study the properties of shale.

At present, the research on shale performance is mainly based on the isotropic model, but because shale has strong anisotropy, studying the isotropic model obviously cannot meet the actual engineering requirements in the process of exploration and development.

Contents of the invention

The invention provides a shale anisotropy measuring device and a measuring method, which solves the problem that the prior art only studies the shale isotropy and cannot meet the actual engineering requirements in the exploration and development process.

Embodiments of the present invention provide a shale anisotropy measuring device on the one hand, comprising:

A bracket, used to support the core column to be tested, the core column to be tested is a cylinder, taken from a shale reservoir core;

A plurality of probes are used to transmit ultrasonic waves to the core column to be tested and to receive the ultrasonic waves propagating in the core column to be tested, and the probes are fixed on the side surface of the core column to be tested by means of the bracket Above, the plurality of probes are arranged along the circumferential direction of the plurality of cross-sections of the core column to be tested;

An ultrasonic signal generator, used to excite the probe with an ultrasonic signal, so that the ultrasonic signal generator generates ultrasonic waves through the probe;

The ultrasonic wave velocity testing device is used to detect the ultrasonic wave received by the probe to obtain wave velocity information.

Another aspect of the embodiments of the present invention provides a method for measuring shale anisotropy, using the above-mentioned shale anisotropy measuring device, including:

Fixing the core column to be tested on the support;

Using the ultrasonic signal generator to sequentially perform ultrasonic signal excitation on each of the probes except the detected probe;

Use the ultrasonic wave velocity testing device to detect the ultrasonic waves received by the detected probe each time to obtain wave velocity information, the wave velocity information includes an angle and a wave velocity corresponding to the angle, and the angle is the The included angle between the line between the detected probe and the excited probe and the axis of the core column to be tested;

Anisotropy parameters at the positions of the detected probes on the core string to be tested are calculated according to all the acquired wave velocity information.

In the shale anisotropy measurement device and measurement method provided in the embodiments of the present invention, a plurality of probes are fixed on the side surface of the core column to be tested by using a bracket and the core column to be tested is fixed, and an ultrasonic signal generator is used to generate ultrasonic waves through the probes , so that the ultrasonic wave can pass through the core column to be tested from the specified probe position to the probe at another specified position, and the ultrasonic wave velocity testing device can detect the waveform of the ultrasonic wave and the corresponding wave velocity information. The circumferential arrangement of the cross-section enables the probe to receive multiple ultrasonic waves transmitted from different angles, thereby obtaining multiple wave velocity information. According to these wave velocity information, the anisotropy parameters of the core column to be tested can be calculated, and then The properties of shale anisotropy are obtained to meet the practical requirements of engineering in the process of exploration and development.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a cross-sectional view of a shale anisotropy measuring device provided in Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the arrangement of probes on the shale anisotropy measuring device shown in Fig. 1;

Fig. 3 is a flow chart of the method for measuring shale anisotropy provided by Embodiment 2 of the present invention;

4 is a schematic diagram of the ultrasonic wave velocity detected by the ultrasonic wave velocity testing device in Embodiment 2 of the present invention;

Fig. 5 is a schematic plan view of the layout of the probes in Embodiment 2 of the present invention;

Fig. 6 is a flow chart of the method for measuring shale anisotropy provided by Embodiment 3 of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

Fig. 1 is a cross-sectional view of a shale anisotropy measuring device provided in Embodiment 1 of the present invention, and Fig. 2 is a schematic diagram of the arrangement of probes on the shale anisotropy measuring device shown in Fig. 1 . As shown in FIG. 1 and FIG. 2 , the device includes: a bracket 11 , a probe 21 , an ultrasonic signal generator 22 and an ultrasonic wave velocity testing device 23 .

Wherein, the bracket 11 is used to support the core column 12 to be tested, and the core column to be tested is a cylinder, which is taken from a shale reservoir core.

The probe 21 is used to transmit ultrasonic waves to the core column 12 to be tested, and to receive the ultrasonic waves propagated in the core column 12 to be tested, and the probe 21 is fixed on the side surface of the core column 12 to be tested by means of the bracket 11, so that the probe 21 can Close to the side surface of the core column 12 to be tested, when the probe 21 emits ultrasonic waves, the ultrasonic waves can directly enter the core column 12 to be tested and propagate in the core column 12 to be tested, and when the probe 21 receives ultrasonic waves, it can also directly receive The ultrasonic waves propagating into the core string 12 to be tested avoid energy loss caused by part of the ultrasonic waves not propagating in the core string 12 to be tested, thereby reducing measurement errors.

There are multiple probes 21 arranged along the circumference of multiple cross-sections of the core column 12 to be tested. When a plurality of probes 21 are arranged at different positions, one of the probes 21 can receive ultrasonic waves emitted from other probes 21 at different angles. For example, in Fig. 2, designate a probe 21 as the probe 21 to be detected, when the ultrasonic wave emitted by other probes 21 on the same cross section as the probe 21 propagates to the position of the probe 21 to be detected, the ultrasonic wave If the angle of the ultrasonic wave is θ1, and the ultrasonic waves emitted by other probes 21 that are not on the same cross-section as the probe 21 to be detected propagate to the position of the probe 21 to be detected, if the angle of the ultrasonic waves is θ2, then the two The angles are different.

In addition, the probe 21 described here has two functions: transmitting ultrasonic waves and receiving ultrasonic waves. The emitted ultrasonic waves are generated by an ultrasonic signal generator 22 .

The ultrasonic signal generator 22 is used to excite the probe 21 with an ultrasonic signal, so that the ultrasonic signal generator 22 generates ultrasonic waves through the probe 21, so that the probe 21 can transmit the ultrasonic waves to the core column to be tested. The ultrasonic wave velocity testing device 23 is used to detect the ultrasonic waves received by the probe 21 to obtain wave velocity information. Specifically, the ultrasonic wave velocity testing device 23 can detect the waveform of the ultrasonic wave, and the wave velocity information corresponding to the waveform can be obtained by analyzing the waveform. It can also be said that the ultrasonic wave velocity testing device 23 can detect the ultrasonic wave waveform and the corresponding wave velocity information. As mentioned above, the probe 21 can receive ultrasonic waves at different angles. Therefore, the acquired wave velocity information also includes multiple wave velocity information at different angles. According to these wave velocity information, the anisotropy parameters of the core column to be tested are calculated, and then obtained Anisotropic properties of shale. The specific calculation method will be described in detail in the following examples.

In the above embodiment, the bracket 11 may include a plurality of fixing rings 24 (as shown in FIG. 2 ), which are used to fasten the core column 12 to be tested. The planes where these fixing rings 24 are located are perpendicular to the axis of the core column 12 to be tested, that is to say, the plane where these fixing rings 24 are located is the cross section of the core column 12 to be tested. A plurality of probes 21 are arranged on a fixing ring 24, so that the probes 21 are fixed on the side surface of the core column 12 to be tested by means of the fixing ring 24. By arranging a plurality of probes 21 on a fixed ring 24, the circumferential arrangement of a plurality of probes 21 along the cross-section of the core string 12 to be tested can be easily realized; in addition, by arranging a plurality of fixed rings 24, and making each Multiple probes 21 are arranged on each fixing ring 24, so that multiple probes 21 can be arranged circumferentially along multiple cross-sections of the core column 12 to be tested conveniently.

Specifically, several fixing rings 24 can be selected according to the needs of the measurement. If more angles of shale properties need to be obtained, more fixing rings 24 can be installed, and more probes 21 can be installed on each fixing ring.

In addition, among the plurality of probes 21 on one fixing ring 24 , the angle between two adjacent probes 21 is 90 degrees. That is to say, on the plane where the fixing ring 24 is located, four probes 21 can be arranged along the circumferential direction of the plane, so that the angle between two adjacent probes 21 is 90 degrees. Of course, the number of probes 21 arranged in the circumferential direction of the plane is not limited thereto, and can be selected according to the needs of measurement.

And, assuming that there is a first probe 21 on a fixed ring 24, and assuming that there is a second probe 21 on the adjacent fixed ring 24, the probe 21 can be set so that the connection line between the first probe 24 and the second probe 24 is parallel to The axis of the core column 12 to be tested. That is to say, in the direction parallel to the axis of the core column 12 to be tested, a probe 21 is provided on each of the two adjacent fixed rings 24, that is, the two probes 21 go up and down along the direction parallel to the axis of the core column 12 to be tested. align. Two probes 21 are circled in oval circles as shown in FIG. 2 .

It can be stipulated here that one of the two probes 21 emits ultrasonic waves, and the other receives ultrasonic waves.

According to this regulation, when transmitting and receiving ultrasonic waves between two probes 21 on the same fixed ring, the angle of the ultrasonic waves received by the probes 21 is 90 degrees. , the angle of the ultrasonic waves received by the probe 21 is 0 degrees. Setting the angles between the probes 21 in this way can simplify the calculation of the anisotropy parameters.

In the above embodiment, the bracket 11 may also include a base 111 and a support rod 112 as shown in FIG. 1 , the base 111 is used to fix the support rod 112 , and the support rod 112 is used to support the core column to be tested.

In addition, the parallelism of the two end surfaces of the cylinder core column 12 to be tested can be within ±0.01 mm, so as to ensure that the core column 12 to be tested is stressed when the core column 12 to be tested is pressurized to fix it. uniform.

In the shale anisotropy measuring device provided in this embodiment, a plurality of probes are fixed on the side surface of the core column to be tested by using a bracket, and the core column to be tested is fixed, and an ultrasonic signal generator is used to generate ultrasonic waves through the probes, so that the ultrasonic waves The probe at the specified position can pass through the core column to be tested to reach the probe at another specified position. The ultrasonic wave velocity testing device can detect the waveform of the ultrasonic wave and the corresponding wave velocity information. The circumferential arrangement of the probe can make the probe receive multiple ultrasonic waves transmitted from different angles, thereby obtaining multiple wave velocity information. According to these wave velocity information, the anisotropy parameters of the core column to be tested can be calculated, and then obtained The anisotropic nature of shale to meet the practical requirements of engineering in the exploration and development process.

Embodiment two

Fig. 3 is a flow chart of the method for measuring shale anisotropy provided by Embodiment 2 of the present invention. The method uses the shale anisotropy measuring device described in Example 1, as shown in FIG. 3 , and the method includes the following steps.

Step 301, fixing the core column to be tested on the support.

Specifically, the shale anisotropy measuring device is shown in FIG. 1 , wherein the bracket 11 is used to support the core column 12 to be tested, and the core column 12 to be tested can be fixed by using the bracket 11 .

Step 302 , using the ultrasonic signal generator 22 to sequentially excite each probe 21 except the detected probe 21 with an ultrasonic signal.

Specifically, the shale anisotropy measurement device includes an ultrasonic signal generator 22 and a probe 21, the ultrasonic signal generator 22 is used to excite the probe 21 with an ultrasonic signal, so that the ultrasonic signal generator 22 generates ultrasonic waves through the probe 21, and The probe 21 is used to receive or transmit ultrasonic waves. Through the excitation of the ultrasonic signal generator 22, the probe 21 can transmit the generated ultrasonic waves to the core column 12 to be tested, and the wave velocity information contained in the ultrasonic waves received by the probe 21 from the core column 12 to be tested can pass through the ultrasonic wave velocity testing device 23 Detect and acquire.

In this step, one of the plurality of probes 21 is arbitrarily designated as the detected probe, and then the remaining probes are sequentially stimulated by ultrasonic signals, that is, each probe except the detected probes is sequentially stimulated by ultrasonic signals, Thus, the ultrasonic signal generator 22 passes through each probe 21 in turn to generate ultrasonic signals.

Step 303, use the ultrasonic wave velocity testing device 23 to detect the ultrasonic waves received by the detected probe 21 each time to obtain wave velocity information, the wave velocity information includes the angle and the wave velocity corresponding to the angle, wherein the angle is the wave velocity of the detected probe 21 The included angle between the line connecting the excited probe and the axis of the core string 12 to be tested.

Fig. 4 is a schematic diagram of the ultrasonic wave velocity detected by the ultrasonic wave velocity testing device in the second embodiment of the present invention. As shown in Figure 4, the P wave refers to the longitudinal wave, and the S wave refers to the transverse wave. Since the wave speed of the P wave is greater than that of the S wave, the P wave is usually received first. The first take-off point in Figure 4 is the P wave take-off Point, starting from this point to detect, the wave velocity of P wave can be obtained, and when the amplitude of P wave wave velocity begins to decay and become smaller, the point where the increase trend appears is the S wave take-off point, starting from this point to detect, can obtain S wave wave speed.

Each wave velocity information corresponds to an angle, which is defined as the angle between the line connecting the detected probe 21 and the excited probe and the axis of the core column 12 to be tested. Fig. 5 is a schematic plan view of the layout of the probes in the second embodiment of the present invention. The plane shown in FIG. 5 can be understood as the side surface of the core column 12 to be tested is cut along the axis direction of the core column 12 to be tested and then flattened. The small dots in Fig. 5 represent probes, and 12 probes are shown in the figure in total, and are marked with 12 letters of A～M, and the "depth" marking line of the plane is parallel to the axis of the rock core column 12 to be tested, so , the angle between the line between the two probes and the axis of the core column 12 to be tested is equal to the angle between the line between the two probes and the "depth" marking line of the plane. Therefore, as can be seen from Fig. 5, assuming that the probe F is the detected probe, when the ultrasonic waves emitted by the probe A are transmitted from the core column 12 to be tested to the position of the probe F, the angle of the ultrasonic waves received by the probe F is: A. The angle between the connection line between the probes F and the "depth" marking line of the plane is 90 degrees as shown in Figure 5. Several other angles are also shown in FIG. 5 .

It should be noted that the angle of the ultrasonic wave received by the probe is related to the setting position of each probe. Figure 5 only shows one setting method. speed of ultrasonic waves.

Step 304 , calculating the anisotropy parameter of the position of the detected probe on the core string 12 to be tested according to all the acquired wave velocity information.

According to the above description, when the ultrasonic waves emitted by each excited probe reach the detected probe, an angled wave velocity information will be obtained. After multiple probes are excited, multiple wave velocities can be obtained from the detected probe. information. According to the wave velocity information, the anisotropy parameter at the position of the detected probe on the core column 12 to be tested can be calculated, and then the anisotropic property of the shale can be obtained.

In the shale anisotropy measurement method provided in this embodiment, since the shale anisotropy measurement device described in the above-mentioned embodiments is used, multiple probes can be fixed on the side surface of the core column to be tested by using the bracket and fixed to be The core column is measured, and the ultrasonic signal generator is used to generate ultrasonic waves through each probe in turn, so that the ultrasonic wave can be transmitted from the excited probe to the detected probe through the core column to be tested, and the ultrasonic wave velocity testing device can detect the received by the probe. Ultrasonic waves can obtain wave velocity information with angles. In addition, multiple probes are arranged along the circumferential direction of multiple cross-sections of the core column to be tested, so that the probes can receive multiple ultrasonic waves transmitted from different angles, thereby Obtain multiple wave velocity information, and calculate the anisotropy parameters of the core column to be tested according to these wave velocity information, and then obtain the anisotropic properties of shale to meet the actual engineering requirements in the exploration and development process.

Embodiment Three

Fig. 6 is a flow chart of the method for measuring shale anisotropy provided by Embodiment 3 of the present invention. This method uses the shale anisotropy measuring device described in Example 1, as shown in FIG. 6 , and the method includes the following steps.

Step 601 , cutting and grinding the shale reservoir core to prepare a cylindrical core column to be tested.

Specifically, the cross-sectional diameter×height of the prepared core column to be tested may be 25mm×50mm, 38mm×76mm, or 50mm×100mm.

Step 602, fixing the core column to be tested on the support.

Step 603 , use the ultrasonic signal generator to sequentially excite each probe except the detected probe with an ultrasonic signal.

Step 604: Use the ultrasonic wave velocity testing device to detect the ultrasonic waves received by the detected probe each time to obtain wave velocity information. The wave velocity information includes the angle and the wave velocity corresponding to the angle. The angle is the distance between the detected probe and the excited probe. The included angle between the line of and the axis of the core column to be tested.

Steps 602 to 604 have been described in detail in Embodiment 2, and will not be repeated here.

Step 605. Obtain V _p (θ) when θ is 0°, 90°, or 45°, where θ is the angle, and V _p (θ) is the wave velocity of the longitudinal wave corresponding to θ.

Specifically, steps 605 to 608 are detailed instructions for calculating anisotropy parameters according to Mavko and Thomsen's theories on anisotropy research. Specifically, ultrasonic waves are divided into longitudinal waves (P waves) and transverse waves (S waves). To calculate the anisotropy parameters at the position of the detected probe, it is necessary to obtain the P wave velocity of several specified angles. When θ is the angle, the obtained θ is 0 V _{p (θ) at degrees, 90 degrees, and 45 degrees, where V p (} θ) is the P wave velocity.

Step 606: Obtain V _{SH (θ) when θ is 0° and 90°, where V SH (} θ) is the wave velocity of the shear wave corresponding to θ.

Specifically, it is also necessary to obtain shear wave velocities at several specified angles, that is, to obtain V _SH (θ) when θ is 0 degrees and 90 degrees, where V _SH (θ) is the S wave velocity.

Step 607, according to the formula formula and the formula

M=[(c ₁₁ -c ₄₄ )sin ² θ-(c ₃₃ -c ₄₄ )cos ² θ] ² +(c ₁₃ +c ₄₄ ) ² sin ² 2 θ to calculate the elastic constants c ₁₁ , c ₃₃ , c ₄₄ , c ₆₆ and c ₁₃ .

Step 608, according to the formula as well as Calculate the anisotropy parameters ε, γ, and δ.

Step 609 , judging whether the calculation of the anisotropy parameters at the positions of all the probes on the core column to be tested is completed.

Specifically, in order to fully understand the anisotropy performance of the core column to be tested, it is necessary to calculate the anisotropy parameters of all probe positions. Each of the probes is detected and calculated.

If the judgment result is no, select a probe that has not been detected as the detected probe, and go to step 603 .

That is to say, if there is an undetected probe, it is necessary to select this undetected probe for detection.

If the judgment result is yes, the method ends.

That is to say, when all the probes have been tested and the anisotropy parameters have been calculated, the method ends, indicating that the anisotropic performance of the core column to be tested can be obtained through the calculation results.

In the shale anisotropy measurement method provided in this embodiment, since the shale anisotropy measurement device described in the above-mentioned embodiments is used, multiple probes can be fixed on the side surface of the core column to be tested by using the bracket and fixed to be Measure the core column, and use the ultrasonic signal generator to generate ultrasonic waves through each probe except the detected probe in turn, so that the ultrasonic energy can pass from the excited probe through the core column to be tested to the detected probe. Ultrasonic wave velocity test device The ultrasonic wave received by the probe can be detected, and the wave velocity information with angle can be obtained. In addition, multiple probes can be arranged along the circumferential direction of multiple cross-sections of the core column to be tested, so that the probe can receive multiple signals from different Ultrasonic waves transmitted at different angles, so as to obtain multiple wave velocity information, based on these wave velocity information, the anisotropy parameters of the core column to be tested can be calculated, and then the anisotropic properties of the shale can be obtained, so as to meet the engineering requirements in the exploration and development process. actual requirements.

In addition, through this method, the anisotropy performance at different positions of the core column to be tested can be obtained, so that engineers can more comprehensively understand the anisotropy performance of the core column to be tested.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. a shale anisotropy measurement device, it is characterised in that including:

Support, is used for supporting core column to be measured, and described core column to be measured is cylinder, takes from shale reservoir core；

Multiple probes, are used for launching ultrasound wave extremely described core column to be measured, and for receiving propagation in described core column to be measured Described ultrasound wave, described probe is fixed on the side surface of described core column to be measured by described support, the plurality of probe edge Being circumferentially arranged of multiple cross sections of described core column to be measured；

Ultrasonic signal generator, for carrying out ultrasonic signal excitation to described probe, so that described ultrasonic signal occurs Device produces ultrasound wave by described probe；

Ultrasonic velocity test device, for detecting the described ultrasound wave that described probe receives, to obtain velocity of wave information.

Device the most according to claim 1, it is characterised in that described support includes multiple retainer ring, is used for fixing described Core column to be measured, the plane at described retainer ring place is perpendicular to the axis of described core column to be measured, a described retainer ring sets It is equipped with multiple described probe, so that described probe is fixed on the side surface of described core column to be measured by described retainer ring.

Device the most according to claim 2, it is characterised in that in the multiple described probe in a described retainer ring, phase The adjacent angle between two described probes is 90 degree.

Device the most according to claim 2, it is characterised in that have the first probe in a described retainer ring is adjacent Described retainer ring on there is the second probe, described first probe is parallel to described rock core to be measured with the line of described second probe The axis of post.

Device the most according to claim 1, it is characterised in that described support also includes base and support bar, described base For fixing described support bar, described support bar is used for supporting described core column to be measured.

6. according to the device described in any one of Claims 1 to 5, it is characterised in that two end faces of described core column to be measured The depth of parallelism is ± 0.01mm within.

7. a shale anisotropy measurement method, it is characterised in that use the shale described in any one of claim 1～6 each Anisotropy measurement apparatus, described method includes:

(1) core column to be measured is fixed on the bracket；

(2) utilize described ultrasonic signal generator that each the described probe in addition to detected described probe is entered successively Row ultrasonic signal encourages；

(3) ultrasound wave utilizing described ultrasonic velocity test device every time to receive described detected described probe is carried out Detection, to obtain velocity of wave information, described velocity of wave information comprises angle and the velocity of wave of corresponding described angle, the angle ranging from described quilt The angle between line and the axis of described core column to be measured between described probe and the energized described probe of detection；

(4) according to residing for described detected described probe in all described velocity of wave information described core column to be measured of calculating obtained The anisotropic parameters of position.

Shale anisotropy measurement method the most according to claim 7, it is characterised in that also include:

Judge in described core column to be measured, whether the anisotropic parameters of all described probe present positions has calculated；

When judged result is no, chooses the most tested described probe and pop one's head in as detected, perform described step (2) to institute State step (4).

Shale anisotropy measurement method the most according to claim 7, it is characterised in that described according to all institutes obtained State velocity of wave information and calculate the anisotropic parameters of described detected described probe present position in described core column to be measured, specifically Including:

Obtain θ be 0 degree, 90 degree, 45 degree time V_p(θ), wherein, θ is angle, V_p(θ) it is the velocity of wave of compressional wave of corresponding θ；

Obtain θ be 0 degree, 90 degree time V_SH(θ),V_SH(θ) it is the velocity of wave of shear wave of corresponding θ；

According to formula

$V_p\left(\mathrm{\θ}\right)={(c_{11}{\sin }^2\mathrm{\θ}+c_{33}{\cos }^2\mathrm{\θ}+c_{44}+\sqrt{M})}^{1/2}{\left(2\mathrm{\ρ}\right)}^{-1/2},$

Formula

And formula M=[(c₁₁-c₄₄)sin²θ-(c₃₃-c₄₄)cos²θ]²+(c₁₃+c₄₄)²sin²2 θ calculate elastic constant therein c₁₁、c₃₃、c₄₄、c₆₆And c₁₃；

According to formulaAndCalculate anisotropic parameters ε, γ with And δ.

Shale anisotropy measurement method the most according to claim 7, it is characterised in that before described step (1) also Including:

Shale reservoir core being cut, polished, is prepared as cylindrical core column to be measured, described core column cross section to be measured is straight The size of footpath × height is 25mm × 50mm, 38mm × 76mm, or 50mm × 100mm.