CN117287180B - Electromagnetic wave logging method and system - Google Patents
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Abstract
The invention provides an electromagnetic wave logging method and system, wherein the method comprises the following steps: step S1: arranging a triaxial induction logging instrument on a logging site; step S2: acquiring electromagnetic wave logging data generated by a triaxial induction logging instrument; step S3: based on the electromagnetic wave logging data, a logging result is determined. According to the electromagnetic wave logging method and system, the triaxial induction logging instrument is added with the radial transmitting-receiving coil system in the horizontal direction, so that the axisymmetry of the induction electromagnetic field spatial distribution is broken, rich conductivity anisotropy information can be provided, and the stratum evaluation is facilitated.
Description
Technical Field
The invention relates to the technical field of electromagnetic wave logging, in particular to an electromagnetic wave logging method and system.
Background
Currently, conventional axial induction logging instruments consist of an axial transmitting coil and an axial receiving coil, inverting formation resistivity by measuring the imaginary signal of the magnetic field. In vertical wells, the measurement signal is related only to the horizontal conductivity of the formation, and is often left out by treating low-resistance oil reservoirs, such as thin interaction layers of sand and mudstone, as high-cement bearing formations, independent of the vertical conductivity. In an inclined well, the apparent conductivity inverted by the axial induction logging instrument is a weighted average of the horizontal conductivity and the vertical conductivity, and also brings trouble to accurate formation evaluation.
Disclosure of Invention
One of the purposes of the invention is to provide an electromagnetic wave logging method, and the triaxial induction logging instrument breaks the axisymmetry of the electromagnetic field spatial distribution due to the addition of a radial transmitting-receiving coil system in the horizontal direction, can provide rich conductivity anisotropy information, and is beneficial to the evaluation of stratum.
The electromagnetic wave logging method provided by the embodiment of the invention comprises the following steps:
step S1: arranging a triaxial induction logging instrument on a logging site;
step S2: acquiring electromagnetic wave logging data generated by a triaxial induction logging instrument;
step S3: based on the electromagnetic wave logging data, a logging result is determined.
Preferably, the electromagnetic wave logging method further comprises:
and visually outputting the logging result.
Preferably, the visually outputting the logging result includes:
acquiring a preset field model corresponding to the logging field;
mapping the logging results into the field model;
and outputting and displaying the field model.
Preferably, the electromagnetic wave logging method further comprises:
assisting a user to input a supplementary logging strategy based on the field model;
and issuing the supplementary logging strategy to the logging site.
Preferably, the assisting user inputs a supplementary logging strategy based on the field model, including:
acquiring a focus area of the user in the field model;
performing feature extraction on the region of interest based on a preset feature extraction template to obtain a plurality of first features;
matching the first feature with a second feature in a plurality of preset trigger feature sets;
determining whether a target trigger feature set exists; the target trigger feature set is one of the trigger feature sets, and all the second features in the target trigger feature set are matched with the first features;
if yes, acquiring a supplementary logging strategy recommendation set corresponding to the target trigger feature set, and recording acquisition time;
setting the supplementary logging strategy recommendation set on a preset time axis according to the acquisition time;
determining a recommended supplemental well logging strategy from the recommended set of supplemental well logging strategies on the timeline based on recommended supplemental well logging strategy determination conditions;
based on a preset recommendation table template, generating a recommendation table according to the recommendation supplementary logging strategy;
outputting and displaying the recommendation table;
receiving the supplementary logging strategy selected by the user from the recommendation table;
wherein the recommended supplemental logging strategy determination conditions include:
the total number of the recommended set of supplemental well logging strategies for which the recommended supplemental well logging strategy is present is greater than or equal to a preset number threshold;
the recommended set of the supplementary logging strategies occurring with the recommended supplementary logging strategy are adjacent to each other on the timeline;
and the interval distance between every two adjacent supplementary logging strategy recommendation sets of the recommended supplementary logging strategies on the time axis is smaller than or equal to a preset distance threshold.
Preferably, the step of issuing the supplementary logging strategy to the logging site comprises:
creating a strategy issuing meeting;
acquiring a preset field personnel list corresponding to the logging field;
accessing a preset personnel node corresponding to the field personnel in the field personnel list into the strategy to issue a meeting;
analyzing a plurality of sub-strategies and corresponding strategy types in the supplementary logging strategy;
acquiring a target function corresponding to the strategy type;
determining a target field person belonging to the target function from the field persons;
pushing the corresponding sub-strategy to the personnel node corresponding to the target field personnel.
An electromagnetic wave logging system provided by an embodiment of the present invention includes:
the triaxial induction logging instrument layout module is used for layout triaxial induction logging instruments on a logging site;
the electromagnetic wave logging data acquisition module is used for acquiring electromagnetic wave logging data generated by the triaxial induction logging instrument;
and the logging result determining module is used for determining the logging result based on the electromagnetic wave logging data.
Preferably, the electromagnetic wave logging system further comprises:
and the logging result output module is used for visually outputting the logging result.
Preferably, the logging result output module visually outputs the logging result, including:
acquiring a preset field model corresponding to the logging field;
mapping the logging results into the field model;
and outputting and displaying the field model.
Preferably, the electromagnetic wave logging system further comprises:
an auxiliary module for including:
assisting a user to input a supplementary logging strategy based on the field model;
and issuing the supplementary logging strategy to the logging site.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an electromagnetic wave logging method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the orientation of a triaxial induction logging instrument and formation in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a triaxial induction logging instrument and formation according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the geometry and electrical parameters of a horizontal layer of biaxially anisotropic formation in accordance with an embodiment of the present invention;
FIG. 5 shows a spectral domain field f (k) in an embodiment of the invention x ,k y Z) with k x And k is equal to y Is a schematic diagram of the variation relationship of (a);
FIG. 6 is a schematic diagram of rotation transformation of singular points and a coordinate system in an embodiment of the present invention;
FIG. 7 is a further schematic diagram of rotational transformation of singular points and coordinate systems in an embodiment of the present invention;
FIG. 8 is a schematic diagram of a rotation coordinate from an xyz coordinate system to x ' y ' z ' in an embodiment of the present invention;
FIG. 9 is a schematic diagram of an electromagnetic logging system according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
An embodiment of the present invention provides an electromagnetic wave logging method, as shown in fig. 1, including:
step S1: arranging a triaxial induction logging instrument on a logging site;
step S2: acquiring electromagnetic wave logging data generated by a triaxial induction logging instrument; electromagnetic wave logging data are generated when the triaxial induction logging instrument works;
step S3: based on the electromagnetic wave logging data, a logging result is determined. Logging results can be determined directly based on electromagnetic wave logging data.
The working principle and the beneficial effects of the technical scheme are as follows:
triaxial induction logging provides information such as formation anisotropy and azimuth through the imaginary part of a magnetic field. The basic composition of the instrument includes three mutually orthogonal transmit and three mutually orthogonal receive coils, as shown in fig. 2. When the size of the coil is far smaller than that of the instrument, the visible orthogonal coil is an orthogonal magnetic dipole, and the receiving coil can measure nine magnetic field components simultaneously. Nine magnetic field components at any point in space in the stratum coordinate system form the following tensor form:
h in ij (r) represents the magnetic field component received by the i-direction coil transmitting the j-direction coil at position r.
During the well logging process, the orientation between the triaxial sensing instrument and the earth will change, and the instrument coordinate system x "y" z "fixed on the instrument needs to be introduced, as shown in fig. 3. The magnetic field signal measured by the triaxial induction logging instrument is obtained by rotating and transforming a magnetic field tensor H under a stratum coordinate system. Then in the instrument coordinate system the magnetic field tensor H t Can be expressed as:
H t ＝RHR T
where "T" represents the transposed symbol. The well angle α (device angle) is the angle between the formation normal (z-axis) and the instrument axis (z "-axis), and the azimuth angle β (azimuthal angle) is the angle between the x-axis and the projection of the instrument in the x-y plane, rotation angleIs self-rotation about the instrument axis.
The triaxial induction logging instrument breaks the axisymmetry of the induction electromagnetic field spatial distribution due to the addition of the radial transmitting-receiving coil system in the horizontal direction, can provide rich conductivity anisotropy information, and is beneficial to stratum evaluation.
For a biaxial anisotropic model, another set of recurrence relation of lamellar medium electromagnetic fields is provided based on the concepts of generalized reflection and generalized transmission, and propagation terms in the method depend on an electric field and a magnetic field.
As shown in FIG. 4, three mutually orthogonal magnetic dipole sources J M Placed at (0, z) T ) Where it is located. The electromagnetic field excited by the magnetic dipole source in the homogeneous medium satisfies the Maxwell equation:
electric parameter epsilon * Tensor forms of μ can be expressed as:
substituting (3.3.3) into (3.1.3) the constitutive relation,
substituting (3.1.10) into (3.3.1) and (3.3.2), and combining (3.3.4) to obtain a normal differential equation set of the electromagnetic field in the horizontal direction:
electromagnetic field in vertical direction:
wherein the source vectorThe system matrix A is:
wherein,
by determinant det (A-p z I) Eigenvalue p of solution=0 z ：
As can be readily seen from the above, two eigenvalues p must be generated by sign alternation z1 And p is as follows z2 Having a positive imaginary part and two p z3 And p is as follows z4 Has a negative imaginary part, and p z3 ＝-p z1 And p is as follows z4 ＝-p z2 Eigenvalue matrixThe eigenvectors are:
solving the inverse matrix by linear algebra theory to letSatisfy NN -1 The =i expansion can be foundThen
The symmetrical relation can be obtained by comparing (3.1.62):
substituting (3.1.28) into (3.3.5), and obtaining the analytical expressions of the upstream and downstream as follows:
u(z)＝-exp(-iωp z (z-z T ))Σ - ，z<z T (3.3.13)
d(z)＝exp(iωp z (z-z T ))Σ + ，z>z T (3.3.14)
the source term expression is:
horizontal electromagnetic field in layered medium:
wherein the mode field expression:
substituting (3.3.17) into (3.3.16) and developing the electric field andmagnetic field separation, at z<z T The section has only upstream waves related to the source, so there are:
in z>z T The interval, only downstream wave related to source, so:
matrix elements at two ends of the equal sign are correspondingly equal, (3.3.18) and (3.3.19) are rewritten as:
in z<z T In the interval of the time period,
propagation item:
in z>z T In the interval of the time period,
propagation item:
where γ=1 corresponds to an electric field propagation term and γ= -1 corresponds to a magnetic field propagation term.
Considering any two adjacent layers of non-source bearing strata, layer boundary d n The upstream and downstream of the junction are connected by a narrow reflection and narrow transmission coefficient:
γD n+1 ＝γT n,n+1 exp(iωp z,n (d n -d n-1 ))D n +R n+1,n exp(-iωp z,n+1 (d n -d n+1 ))U n+1 ..(3.3.24)
U n ＝T n+1,n exp(-iωp z,n+1 (d n -d n+1 ))U n+1 +γR n,n+1 exp(iωp z,n (d n -d n-1 ))D n ...(3.3.25)
the formulas (3.3.24) and (3.3.25) are arranged in a matrix form:
for propagation of the treated electromagnetic field in the multilayer medium, the generalized reflection and generalized transmission concepts are utilized for the connection of upstream waves:
connection of corresponding downstream wave:
the propagation term in each layer of medium is solved below. First consider the travelling wave coefficients of the layer in which the source is located. As shown in fig. 4, the m-layer is divided into two regions by using the position zT of the emission point as a boundary, the upper half region of the field from the emission source is an upstream wave, and the lower half region is a downstream wave. The propagation term for the upper/lower region can be written as:
let U' m ＝-exp(-iωp z,m (d m -z T ))Σ - +U m ,D′ m ＝exp(iωp z,m (d m-1 -z T ))Σ + +D m Respectively with respect to the upstream and downstream directions. To solve the amplitude coefficient matrix U m And D m Generalized reflection/generalized transmission is applied to the formation boundary locations. First, at the upper boundary d m-1 And lower boundary d m Formulas (3.3.27) and (3.3.30) were used respectively, and there were:
simultaneously (3.3.33) and (3.3.34), D is eliminated m Obtaining the upstream wave amplitude coefficient U of the active layer m ，
Likewise, the U is eliminated by combining (3.3.33) with (3.3.34) m Obtaining the amplitude coefficient D of the downstream wave of the active layer m Is that
Substituting (3.3.35) - (3.3.36) into (3.3.31) and (3.3.32) allows the propagation term of the layer where the source is located to be determined.
Based on travelling wave coefficient U 'of active layer' m With D' m Up/down wave coefficient U of non-source layer n (n.noteq.m) n And D n Can be determined by the generalized transmission relation (3.3.28) and (3.3.29), respectively.
For n=m-1 layer upstream wave is derived from the m-th layer upstream wave generalized transmission (3.3.28):
and n < m-1 layer, using equation (3.3.28) continuously, gives the n-th layer upstream wave:
likewise, the downstream wave coefficients for n=m+1 layers are derived from the m-th downstream wave generalized transmission (3.3.29):
and n > m+1, using (3.3.29) continuously, solving the n-th layer downstream wave:
finally, the downstream wave D of the nth layer is respectively obtained through (3.3.27) and (3.3.30) n (n<m) and upstream wave U n (n>m). Finally, the propagation term coefficients (3.3.37), (3.3.38) and (3.3.39), (3.3.40) of each layer are used to obtain the propagation term without the source layer. Finally, the propagation terms are substituted into (3.3.20) and (3.3.22), respectively, to determine the horizontal component of the electromagnetic field.
The generalized reflection coefficient and the generalized transmission coefficient are derived below.
The narrow reflection coefficient and narrow transmission coefficient are solved by considering a single boundary. The continuous condition at the boundary by the horizontal component of the electromagnetic field:
collating (3.3.41) and comparing with (3.3.26) and satisfyingObtaining a specific expression of the narrow reflectance and the narrow transmittance:
knowing the narrow reflectance/transmittance, solving the generalized reflectance and generalized transmittance using the generalized reflectance and generalized transmittance concepts has the same specific expressions as those of 3.2-cell, and (3.2.16), (3.2.18) and (3.2.20), (3.2.22).
Aiming at the problem of slow convergence of the spectrum field, the following solution is adopted.
Rotating coordinate system
For an electromagnetic field in a layered anisotropic formation, the direct field produced by the transmitting source is superimposed with the reflected field caused by the upper and lower boundaries. To avoid the problem of singularities, the direct field is separated from the electromagnetic field (sub-transmission), and the reflected field is rapidly converged, expressed mathematically as:
wherein f sub (k x ,k y Z) is the spectral domainIntermediate direct field, F sub (x, y, z) is the direct field in the corresponding spatial domain, F when the medium is isotropic or transversely isotropic sub The algebraic solutions (2.4.2) - (2.4.10) exist for (x, y, z). According to the reference [72] Separated direct field f sub (k x ,k y Z) can be calculated through coordinate system rotation transformation, for example, the emission point and the measurement point falling on the x-axis of the original coordinate system are transformed into the z 'axis under the new coordinate system through rotation (as shown in fig. 6 and 7), the positions of the emission point and the measurement point under the new coordinate system are not equal in the z' direction, and the singular point disappears; when the emission point and the measurement point are very close in the z direction, as shown in fig. 8, the emission point-measurement point is rotated to the z 'axis as well, namely, the connection direction of the emission point and the measurement point, and the distance between the emission point and the receiving point in the z' direction in the new coordinate system is enough, so that the singular point disappears. FIG. 6 is a raw coordinate system with the measurement points located on the x-axis; FIG. 7 is a rotational coordinate system with the measurement point located on the z' axis.
In one embodiment, the electromagnetic wave logging method further comprises:
and visually outputting the logging result.
The visually outputting the logging result includes:
acquiring a preset field model corresponding to the logging field; the field model is a three-dimensional model of a logging field;
mapping the logging results into the field model; during mapping, the logging result is represented on a field model;
and outputting and displaying the field model.
The working principle and the beneficial effects of the technical scheme are as follows:
and the logging result is visually output, so that a user can visually check the logging result.
In one embodiment, the electromagnetic wave logging method further comprises:
assisting a user to input a supplementary logging strategy based on the field model; the supplementary logging strategy is a measurement strategy that a user feels that supplementary logging is needed after checking logging results through a field model; the user may be a logging specialist, or the like;
and issuing the supplementary logging strategy to the logging site. After being sent to the logging site, each personnel at the logging site can execute a supplementary logging strategy.
The assisting user entering a supplemental logging strategy based on the field model, comprising:
acquiring a focus area of the user in the field model;
performing feature extraction on the region of interest based on a preset feature extraction template to obtain a plurality of first features; the first feature includes: the type of information within the region of interest (e.g., oil layer, water layer, etc.), the change in position of the region of interest (e.g., left to right, etc.), etc.;
matching the first feature with a second feature in a plurality of preset trigger feature sets;
determining whether a target trigger feature set exists; the target trigger feature set is one of the trigger feature sets, and all the second features in the target trigger feature set are matched with the first features;
if yes, acquiring a supplementary logging strategy recommendation set corresponding to the target trigger feature set, and recording acquisition time; when there is a target trigger feature set, there is a policy in the supplemental logging policy recommendation set that the user may wish to make supplemental logging, such as: the second characteristic is that the information type in the concerned area is oil layer, the position of the concerned area is changed from left to right, the user hopes to test whether the oil layer exists on the right side of the current oil layer area, and the supplementary logging strategy recommended set has a strategy for testing whether the oil layer exists on the right side of the current oil layer area;
setting the supplementary logging strategy recommendation set on a preset time axis according to the acquisition time; when the method is used for setting, the supplementary logging strategy recommendation set is set at a time position corresponding to the acquisition time on the time axis;
determining a recommended supplemental well logging strategy from the recommended set of supplemental well logging strategies on the timeline based on recommended supplemental well logging strategy determination conditions;
based on a preset recommendation table template, generating a recommendation table according to the recommendation supplementary logging strategy; the recommendation table template is a multi-row list, and when the recommendation table is generated, the recommendation supplementary logging strategy is filled in each row of the list;
outputting and displaying the recommendation table; the user can select the supplementary logging strategy from the recommendation table to realize assistance;
receiving the supplementary logging strategy selected by the user from the recommendation table;
wherein the recommended supplemental logging strategy determination conditions include:
the total number of the recommended set of supplemental well logging strategies for which the recommended supplemental well logging strategy is present is greater than or equal to a preset number threshold; the number threshold may be, for example: 3, a step of; when the determination condition of the recommended supplemental logging strategy is met, the fact that the user possibly wants to recommend the supplemental logging strategy to be executed for many times is explained, the recommended supplemental logging strategy is recommended to the user, and the recommendation rationality is improved;
the recommended set of the supplementary logging strategies occurring with the recommended supplementary logging strategy are adjacent to each other on the timeline; when the determination condition of the recommended supplemental well logging strategy is met, the condition that the user possibly hopes to recommend the supplemental well logging strategy to be executed for many times is continuously indicated, the recommended supplemental well logging strategy is recommended to the user, and the recommendation rationality is improved;
and the interval distance between every two adjacent supplementary logging strategy recommendation sets of the recommended supplementary logging strategies on the time axis is smaller than or equal to a preset distance threshold. The distance threshold may be, for example: 20 seconds (distance units on the time axis in time units); when the determination condition of the recommended supplemental logging strategy is met, the fact that the recommended supplemental logging strategy is expected to be executed for many times in a short period is indicated, the recommended supplemental logging strategy is recommended to a user, and the recommendation rationality is improved;
issuing the supplemental logging strategy to the logging site, comprising:
creating a strategy issuing meeting; the strategy issuing meeting is an online meeting for issuing a supplementary logging strategy;
acquiring a preset field personnel list corresponding to the logging field; the field personnel list is provided with a plurality of field personnel in a logging field;
accessing a preset personnel node corresponding to the field personnel in the field personnel list into the strategy to issue a meeting; the personnel node is a communication node of an intelligent terminal (such as a mobile phone, a tablet and the like) used by field personnel;
analyzing a plurality of sub-strategies and corresponding strategy types in the supplementary logging strategy; the policy types include: debugging logging equipment, on-site recording and the like;
acquiring a target function corresponding to the strategy type; target functions include: debugging, recording and the like;
determining a target field person belonging to the target function from the field persons;
pushing the corresponding sub-strategy to the personnel node corresponding to the target field personnel. And pushing the sub-strategy to on-site personnel corresponding to the target function according to the strategy type of the sub-strategy, so as to realize targeted supplement logging strategy delivery.
An embodiment of the present invention provides an electromagnetic wave logging system, as shown in fig. 9, including:
the triaxial induction logging instrument layout module 1 is used for layout triaxial induction logging instruments on a logging site;
the electromagnetic wave logging data acquisition module 2 is used for acquiring electromagnetic wave logging data generated by the triaxial induction logging instrument;
a logging result determining module 3, configured to determine a logging result based on electromagnetic wave logging data.
Electromagnetic wave logging system, still include:
and the logging result output module is used for visually outputting the logging result.
The logging result output module visually outputs the logging result, including:
acquiring a preset field model corresponding to the logging field;
mapping the logging results into the field model;
and outputting and displaying the field model.
Electromagnetic wave logging system, still include:
an auxiliary module for including:
assisting a user to input a supplementary logging strategy based on the field model;
and issuing the supplementary logging strategy to the logging site.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (3)
1. An electromagnetic wave logging method, comprising:
step S1: arranging a triaxial induction logging instrument on a logging site;
step S2: acquiring electromagnetic wave logging data generated by a triaxial induction logging instrument;
step S3: determining a logging result based on electromagnetic wave logging data;
visually outputting the logging result;
the visually outputting the logging result includes:
acquiring a preset field model corresponding to the logging field;
mapping the logging results into the field model;
outputting and displaying the field model mapped by the logging result;
further comprises:
the auxiliary user inputs a supplementary logging strategy based on the field model mapped by the logging result;
issuing the supplemental logging strategy to the logging site;
the assisting user entering a supplemental logging strategy based on the field model, comprising:
acquiring a concerned area of the user in the field model after the logging result is mapped;
performing feature extraction on the region of interest based on a preset feature extraction template to obtain a plurality of first features;
matching the first feature with a second feature in a plurality of preset trigger feature sets;
determining whether a target trigger feature set exists; the target trigger feature set is one of the trigger feature sets, and all the second features in the target trigger feature set are matched with the first features;
if yes, acquiring a supplementary logging strategy recommendation set corresponding to the target trigger feature set, and recording acquisition time;
setting the supplementary logging strategy recommendation set on a preset time axis according to the acquisition time;
determining a recommended supplemental well logging strategy from the recommended set of supplemental well logging strategies on the timeline based on recommended supplemental well logging strategy determination conditions;
based on a preset recommendation table template, generating a recommendation table according to the recommendation supplementary logging strategy;
outputting and displaying the recommendation table;
receiving the supplementary logging strategy selected by the user from the recommendation table;
wherein the recommended supplemental logging strategy determination conditions include one or more of the following combinations:
the total number of the recommended set of supplemental well logging strategies for which the recommended supplemental well logging strategy is present is greater than or equal to a preset number threshold;
the recommended set of the supplementary logging strategies occurring with the recommended supplementary logging strategy are adjacent to each other on the timeline;
and the interval distance between every two adjacent supplementary logging strategy recommendation sets of the recommended supplementary logging strategies on the time axis is smaller than or equal to a preset distance threshold.
2. The electromagnetic wave logging method of claim 1, wherein issuing the supplemental logging strategy to the logging site comprises:
creating a strategy issuing meeting;
acquiring a preset field personnel list corresponding to the logging field;
accessing a preset personnel node corresponding to the field personnel in the field personnel list into the strategy to issue a meeting;
analyzing a plurality of sub-strategies and corresponding strategy types in the supplementary logging strategy;
acquiring a target function corresponding to the strategy type;
determining a target field person belonging to the target function from the field persons;
pushing the corresponding sub-strategy to the personnel node corresponding to the target field personnel.
3. An electromagnetic wave logging system, comprising:
the triaxial induction logging instrument layout module is used for layout triaxial induction logging instruments on a logging site;
the electromagnetic wave logging data acquisition module is used for acquiring electromagnetic wave logging data generated by the triaxial induction logging instrument;
the logging result determining module is used for determining logging results based on electromagnetic wave logging data;
the logging result output module is used for visually outputting the logging result;
the logging result output module visually outputs the logging result, including:
acquiring a preset field model corresponding to the logging field;
mapping the logging results into the field model;
outputting and displaying the field model mapped by the logging result;
further comprises:
an auxiliary module for including:
the auxiliary user inputs a supplementary logging strategy based on the field model mapped by the logging result;
issuing the supplemental logging strategy to the logging site;
the assistance module assists a user in entering a supplemental logging strategy based on the field model, including:
acquiring a concerned area of the user in the field model after the logging result is mapped;
performing feature extraction on the region of interest based on a preset feature extraction template to obtain a plurality of first features;
matching the first feature with a second feature in a plurality of preset trigger feature sets;
determining whether a target trigger feature set exists; the target trigger feature set is one of the trigger feature sets, and all the second features in the target trigger feature set are matched with the first features;
if yes, acquiring a supplementary logging strategy recommendation set corresponding to the target trigger feature set, and recording acquisition time;
setting the supplementary logging strategy recommendation set on a preset time axis according to the acquisition time;
determining a recommended supplemental well logging strategy from the recommended set of supplemental well logging strategies on the timeline based on recommended supplemental well logging strategy determination conditions;
based on a preset recommendation table template, generating a recommendation table according to the recommendation supplementary logging strategy;
outputting and displaying the recommendation table;
receiving the supplementary logging strategy selected by the user from the recommendation table;
wherein the recommended supplemental logging strategy determination conditions include one or more of the following combinations:
the total number of the recommended set of supplemental well logging strategies for which the recommended supplemental well logging strategy is present is greater than or equal to a preset number threshold;
the recommended set of the supplementary logging strategies occurring with the recommended supplementary logging strategy are adjacent to each other on the timeline;
and the interval distance between every two adjacent supplementary logging strategy recommendation sets of the recommended supplementary logging strategies on the time axis is smaller than or equal to a preset distance threshold.
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| CN108875122A (en) * | 2018-04-25 | 2018-11-23 | 杭州迅美科技有限公司 | The artificial intelligence approach and system of geologic parameter are calculated using well logging data |
| CN111927443A (en) * | 2020-05-19 | 2020-11-13 | 中国石油天然气集团有限公司 | Logging system and method for measuring true resistivity of stratum based on electric field |
| CN112814668A (en) * | 2021-01-07 | 2021-05-18 | 河南理工大学 | Stratum inclination angle estimation method for time domain electromagnetic logging |
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| CN108875122A (en) * | 2018-04-25 | 2018-11-23 | 杭州迅美科技有限公司 | The artificial intelligence approach and system of geologic parameter are calculated using well logging data |
| CN111927443A (en) * | 2020-05-19 | 2020-11-13 | 中国石油天然气集团有限公司 | Logging system and method for measuring true resistivity of stratum based on electric field |
| CN112814668A (en) * | 2021-01-07 | 2021-05-18 | 河南理工大学 | Stratum inclination angle estimation method for time domain electromagnetic logging |
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