CN113700475A - Micro-amplitude structure logging while-drilling identification method and device, storage medium and electronic equipment - Google Patents
Micro-amplitude structure logging while-drilling identification method and device, storage medium and electronic equipment Download PDFInfo
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Abstract
The invention provides a method and a device for identifying micro-amplitude structure logging while drilling, a storage medium and electronic equipment. A micro-amplitude structure logging while-drilling identification method comprises the following steps: dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process; comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value to determine whether the micro-amplitude structure is drilled or not; calculating the average curvature of the stratum in response to the drilling encounter micro-amplitude structure; and determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure. The change rate of the formation dip angle and the average curvature of the formation are utilized to dynamically identify the micro-amplitude structure in real time in the logging while drilling process, the fluctuation change of the formation is judged, the accuracy is high, the drilling track adjustment is guided, and the drilling rate of a high-quality reservoir is improved.
Description
Technical Field
The invention belongs to the technical field of oil and gas well exploration and development, and particularly relates to a method and a device for identifying a micro-structure logging while drilling, a storage medium and electronic equipment.
Background
In the technical field of petroleum and natural gas exploration and development, the arrangement of a horizontal well is an important mode for improving the drilling contact rate of an oil-gas layer and the oil-gas yield of a single well. Due to lateral variation of the formation dip, micro-amplitude formations with very different scales, sizes and forms may be drilled during the drilling process. Drilling a micro-amplitude structure often reduces the drilling rate of a high-quality reservoir and even causes complex conditions under a well, so that the drilling engineering urgently needs to identify the micro-amplitude structure.
Identification of micro-amplitude structures usually employs seismic interpretation, wherein larger-scale structures with certain response characteristics on seismic sections can be characterized by means of seismic interpretation technology, but the structures interpreted by seismic energy have considerable uncertainty due to the influence of seismic interpretation precision. The micro-amplitude structure with relatively small scale and small transverse spread basically has no seismic response characteristic, cannot be drawn through seismic interpretation and can only be identified while drilling, and the existing micro-amplitude structure identified while drilling still lacks a reliable quantitative identification method.
In conclusion, the prior art has the problems that the interpretation of the micro-amplitude structure earthquake is uncertain, the precision is not high, and an effective identification means is lacked in the identification while drilling. When the drilling tool encounters a micro-amplitude structure, the drilling tool can not be quickly and accurately identified, and the drilling track can not be adjusted in time, so that the drilling rate of an oil-gas reservoir can be reduced, and even complex conditions in the well can be caused.
Disclosure of Invention
The invention provides a method, a device, a storage medium and electronic equipment for identifying a micro-amplitude structure logging while drilling, aiming at solving the problem that the drilling cannot be quickly and accurately identified when the micro-amplitude structure exists and aiming at the particularity of a geological environment with a hidden micro-amplitude structure.
In a first aspect, an embodiment of the present invention provides a method for identifying a micro-structure logging while drilling, including:
dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process;
comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value to determine whether the micro-amplitude structure is drilled or not;
calculating the average curvature of the stratum in response to the drilling encounter micro-amplitude structure;
and determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure.
In some cases, the method for identifying while drilling in micro-amplitude configuration logging, wherein dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process, comprises:
calculating a formation apparent dip rate of change at a first interval during drilling using a first calculation as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Obtaining a dip angle of the drilled section for geophysical data;
the point B is positioned on the forward drilling track of the point A.
In some cases, the method for identifying a micro-formation while drilling by comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold to determine whether a micro-formation is drilled comprises:
and if the change rate of the stratum apparent dip angle is larger than or equal to a first threshold value, drilling the micro-amplitude structure.
In some cases, the method for identifying while drilling in micro-amplitude configuration logging, wherein the calculating the mean curvature of the stratum comprises:
calculating the mean curvature of the formation using a second calculation as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the stratum view dip angle difference between the point A and the point B on the drilling track, Delta s is the well section length between the point A and the point B, and the point B is positioned on the drilling track in front of the point A.
In some cases, in the method for identifying while drilling micro-amplitude structure logging, the first threshold is determined according to the change rate of the apparent dip angle of the stratum with micro-amplitude structures drilled in the current work area.
In some cases, the determining the morphology of the micro-amplitude structure according to the average curvature of the stratum on both wings of the micro-amplitude structure in the method for identifying the micro-amplitude structure while drilling by logging comprises the following steps:
determining a maximum stratigraphic mean curvature of the micro-amplitude construct left wing;
and judging the maximum stratum average curvature of the left wing and a second threshold value, and determining the form of the micro-amplitude structure.
In some cases, before dynamically calculating the formation dip angle change rate according to the first interval during the drilling process, the method for identifying while drilling by using micro-amplitude configuration logging further includes:
a formation apparent dip angle is calculated for a point in the borehole trajectory according to the first interval.
In a second aspect, an embodiment of the present invention provides a device for identifying a micro-structure logging while drilling, including:
the first calculation module is used for dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process;
the first determination module is used for comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value and determining whether the micro-amplitude structure is drilled or not;
a second calculation module for calculating the mean curvature of the formation in response to the drilling encounter microform;
and the second determining module is used for determining the form of the micro-amplitude structure according to the average curvature of the stratums of two wings of the micro-amplitude structure.
In a third aspect, an embodiment of the present invention provides a storage medium, where the storage medium stores a computer program, and the computer program, when executed by one or more processors, implements the method for identifying while drilling of micro-formation logging as described in the first aspect.
In a fourth aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor, where the memory stores a computer program, and the computer program, when executed by the processor, implements the method for identifying while drilling in micro-formation logging as described in the first aspect.
One or more embodiments of the invention have at least the following beneficial effects:
dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process; comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value to determine whether the micro-amplitude structure is drilled or not; calculating the average curvature of the stratum in response to the drilling encounter micro-amplitude structure; and determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure. The change rate of the formation dip angle and the average curvature of the formation are utilized to dynamically identify the micro-amplitude structure in real time in the logging while drilling process, the fluctuation change of the formation is judged, the accuracy is high, the drilling track adjustment is guided, and the drilling rate of a high-quality reservoir is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for identifying a micro-structure logging while drilling according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a rate of change of apparent dip of a formation according to an embodiment of the present invention;
FIG. 3 is a schematic representation of the mean curvature of the formation provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of the change of the formation dip rate at different locations of the micro-scale structure according to an embodiment of the present invention;
FIG. 5 is a flowchart of an example of identification while drilling of a micro-formation log provided by an embodiment of the present invention;
fig. 6 is a block diagram of a micro-amplitude configuration logging while drilling identification device provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 shows a flowchart of a method for identifying a micro-structure logging while drilling, which may be applied to a horizontal drilling process, but is not limited to the horizontal drilling process, as shown in fig. 1, this embodiment provides a method for identifying a micro-structure logging while drilling, including steps S110 to S140:
and S110, dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process.
In practical applications, the formation dip rate is calculated during drilling at intervals of a first interval, which may be, but is not limited to, 5 meters, and the formation dip is expressed as ± 0.1 ° while the formation is near horizontal. The formation apparent dip angle change rate can accurately reflect the structural form of the well section, and along with the drilling process, the formation apparent dip angle change rate is calculated every other first interval and is compared with a first threshold value, so that whether a micro-amplitude structure exists in a drilling track or not and the range of the drilling track covered by the micro-amplitude structure can be determined.
In some cases, in the above method for identifying while drilling a micro-amplitude formation log, before dynamically calculating a formation dip angle change rate according to a first interval during drilling, step S110 further includes:
and S100, calculating the stratum apparent dip angle of a point in the drilling track.
In practical application, the formation apparent dip angle of one point can be calculated every other first interval, and then the change rate of the formation apparent dip angle of two adjacent calculated points can be obtained, so that whether a micro-amplitude structure exists in a drilling track between the two points is reflected. It is also possible to calculate the formation apparent dip at points in the drilling trajectory in real time and calculate the rate of change of the formation apparent dip once every first interval, i.e., calculate the rate of change of the formation apparent dip for two points at a first interval.
In practical applications, before dynamically calculating the formation dip angle change rate according to the first interval during the drilling process in step S110, the method may further include:
and S210, establishing a geological model based on actual drilling data.
And S220, projecting the points in the drilling track to a stratum section of the geological model in the same direction according to the first interval.
In some cases, in the above method for identifying while drilling a micro-amplitude structure logging, the step S110 of dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process includes:
step S110-1, calculating the change rate of the apparent dip angle of the stratum according to a first interval in the drilling process by using a first calculation formula, wherein the first calculation formula is as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Obtaining a dip angle of the drilled section for geophysical data;
and the point B is positioned on the drilling track in front of the point A.
In practical application, the macroscopic stratigraphic attitude can be described by a stratigraphic dip angle, the preset length can be 50 meters, and if the length of a drilled section before a point B reaches 50 meters, the stratigraphic dip angle of the drilled section 50 meters before the point B is taken as K1Describing the stratigraphic dip angle of the drilled section, accurately calculating the change rate of the apparent dip angle of the stratigraphic, and if the drilled section before the point B is less than 50 meters, directly reading the stratigraphic dip angle of the drilled section as K through geophysical prospecting data1。
Fig. 2 shows a schematic diagram of the change rate of the formation apparent dip angle, and it can be seen that the change rate of the formation apparent dip angle K can accurately reflect the change of the formation apparent dip angle between the point a and the point B on the drilling trajectory. For example, the change rate of the formation apparent dip at different positions of the micro-amplitude structure is shown in fig. 4, and it can be seen that the point where the change rate of the formation apparent dip is 0 is the inflection point of the formation shown in fig. 4.
And step S120, comparing the absolute value of the change rate of the stratum apparent dip angle with a first threshold value, and determining whether the micro-amplitude structure is drilled.
In some cases, in the above method for identifying a micro-amplitude structure while drilling in a logging tool, the step S120 of comparing the absolute value of the change rate of the formation dip angle with a first threshold to determine whether the micro-amplitude structure is drilled includes:
and S120-1, if the absolute value of the change rate of the stratum apparent dip angle is greater than or equal to a first threshold value, drilling a micro-amplitude structure.
And S120-2, if the absolute value of the change rate of the formation apparent dip angle is smaller than a first threshold value, no micro-amplitude structure exists.
In practical application, the first threshold value is determined according to the change rate of the apparent dip angle of the stratum with the micro-amplitude structure drilled in the current work area. The stratum apparent dip angle change rate threshold value of the micro-amplitude structure with a certain scale and large influence on the drilling track is determined by carrying out statistical analysis on the micro-amplitude structure drilled in the current work area, namely, when the stratum apparent dip angle change rate of the well section reaches the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track exists, and when the stratum apparent dip angle change rate of the well section does not reach the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track does not exist.
Taking table 1 as an example, if the first threshold determined by statistical analysis of the drilled micro-amplitude structure in the current work area is 5, and the absolute value of the change rate K of the formation dip is greater than or equal to 5, the formation dip is large in fluctuation, the drilling rate of the high-quality reservoir is greatly affected, and the micro-amplitude structure with a large influence on drilling is determined. Of course, if the absolute value of the change rate K of the formation apparent dip is less than 5, it indicates that the formation apparent fluctuation is small, the influence on the drilling rate of the high-quality reservoir is small, and no micro-amplitude structure exists.
TABLE 1 statistics table for apparent dip angle of micro-structure stratum
| Scale and effect of micro-structure | Criterion for judging stratum apparent dip angle change rate |
| Large fluctuation and large influence on the drilling rate of a high-quality reservoir | Absolute value greater than or equal to 5 |
| The fluctuation is small, and the influence on the drilling rate of a high-quality reservoir is small | Absolute value less than 5 |
The method comprises the steps of counting drilled micro-amplitude structures of a work area where current identification is located, obtaining data which accord with current work area stratum structures, enabling the obtained first threshold to be a threshold capable of truly reflecting current work area stratum structure characteristics, judging the micro-amplitude structures by utilizing the first threshold, accurately identifying the stratum structures which push a drilling track in real time in the current work area drilling process, finding the micro-amplitude structures in time, and adjusting the drilling track as early as possible.
And S130, responding to the drilling encounter micro-amplitude structure, and calculating the average curvature of the stratum.
In some embodiments, calculating the mean curvature of the formation in step S130 includes:
calculating the mean curvature of the formation using a second calculation as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the difference value of the stratum view inclination angle between the points A and B on the drilling track, namely the variation of the stratum view inclination angle between the points A and B, Delta s is the length of the well section between the points A and B, namely the arc length between the points A and B, and the point B is positioned on the drilling track in front of the point A.
Fig. 3 shows a schematic diagram of the average curvature of the formation, and it can be seen that the fluctuation between the point a and the point B on the drilling trajectory can be accurately reflected by the average curvature of the formation.
In the case where a micro-amplitude structure exists in the drilling trajectory, it is necessary to further determine the form of the micro-amplitude structure to perform subsequent drilling trajectory adjustment and data analysis in combination with the actual situation, and therefore, in the present embodiment, the form of the micro-amplitude structure, for example, steep left and steep right, steep left and gentle right, and the like, is identified by calculating the average curvature of the formation calculated by the drilling trajectory in which the micro-amplitude structure exists.
And S140, determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure.
In some embodiments, determining the morphology of the micro-amplitude structure based on the mean curvature of the formation on both sides of the micro-amplitude structure in step S140 includes:
s140-1, determining the maximum stratum average curvature of the micro-amplitude structure left wing;
and S140-2, judging the maximum stratum average curvature of the left wing and a second threshold value, and determining the form of the micro-amplitude structure.
In practical application, the second threshold value is determined according to the relation between the form of the micro-amplitude structure drilled in the current work area and the average curvature of the stratums at two wings. And determining the relation between the structure form and the average curvature of the left wing stratum by performing statistical analysis on the micro-amplitude structure drilled in the current work area, and further determining a second threshold value as a standard for identifying the steepness and slowness of two wings of the micro-amplitude structure.
Taking the statistical table shown in table 2 as an example, the second threshold value C is determined to be 1.25.
TABLE 2 statistical table of micro-amplitude morphology and mean curvature of drilled work area
Specifically, the apparent dip angle change rate is calculated every first interval dynamically, and then the section of the drilling track where the micro-amplitude structure begins to exist is determined, and further the drilling track range covered by the micro-amplitude structure is obtained along with the drilling depth, during the drilling process, two wings of the micro-amplitude structure may respectively relate to a plurality of calculated average curvatures of strata, so that the maximum value is taken from the calculated average curvatures of the strata in the drilling track range related to the left wing, and the maximum value can reflect the form trend of the left wing and the right wing of the micro-amplitude structure.
In some embodiments, the maximum stratigraphic mean curvature of the left wing may be judged against a second threshold to determine the morphology of the micro-amplitude structure according to the following rules:
if the maximum formation mean curvature of the left wing is greater than or equal to the second threshold, the morphology of the micro-amplitude structure is steep left and gentle right.
And if the maximum stratum average curvature of the left wing is smaller than a second threshold value, the micro-amplitude structure is in a shape of gradual left and steep right.
In the criterion for determining the morphology of the microstructure exemplified in table 3, the second threshold value C is 1.25.
TABLE 3 determination of micro-amplitude structural morphology for mean curvature of formation
In summary, the method dynamically identifies the micro-amplitude structure in real time in the logging while drilling process by using the change rate of the formation apparent dip angle and the formation average curvature, and judges the fluctuation of the formation, and the method has high accuracy, is favorable for guiding the adjustment of the drilling track, and improves the drilling rate of the high-quality reservoir. Specifically, the following advantageous effects can be brought:
(1) the cost is low. All the utilized data are data generated in the drilling process of the horizontal well, and extra equipment and analysis and test means are not required. Based on relevant data such as logging while drilling, well logging, orientation and the like, the stratum apparent dip angle change rate of the first interval is calculated, a first threshold value is determined by counting the stratum apparent dip angle change rate of a large micro-amplitude structure in a work area, when the absolute value of the calculated stratum apparent dip angle change rate is larger than or equal to the absolute value, the micro-amplitude structure with large drilling influence can be considered, the stratum average curvature value is calculated, and dynamic identification is carried out on the micro-amplitude structure form by combining with an identification standard.
(2) And the identification is quick. Related data calculation can be carried out in the process of drilling, the data calculation process is simple, the key calculation is that the change rate of the apparent dip angle of the stratum and the average stratum curvature are calculated once every first interval, and the calculation period is several minutes, so that the identification is very quick, and the judgment is convenient to be made in time.
(3) The identification accuracy is high. The micro-amplitude structure of 9 wells (from the well A to the well I) can be accurately identified in a certain work area, wherein the identification accuracy rate is 100 percent for 5 wells with steep left and right and 4 wells with steep left and right.
Example two
This example illustrates the detailed implementation of the present invention by the following examples:
FIG. 5 shows a flow chart of an example of micro-formation logging while drilling identification, comprising:
first, the apparent dip of the formation at a point in the drill trajectory is calculated in real time.
And secondly, dynamically calculating the change rate K of the formation apparent dip angle according to the first interval in the drilling process.
Again, the absolute value of the rate of change of the formation apparent dip is compared to a first threshold (e.g., 5) to determine whether to drill a micro-swath of formation: calculating the average curvature of the stratum in response to the drilling encounter micro-amplitude structure; otherwise, the current formation is a normal formation.
In the case of drilling in the micro-amplitude structure, if the left wing maximum formation average curvature of the micro-amplitude structure is greater than or equal to a second threshold (for example, 1.25), the current micro-amplitude structure form is steep from left to right, and if the left wing maximum formation average curvature of the micro-amplitude structure is less than 1.25, the current micro-amplitude structure form is steep from left to right.
According to the average curvature of the strata on the two wings of the micro-amplitude structure, the form of the micro-amplitude structure is determined by taking the well A as an example, and the apparent dip angle change rate and the average curvature of the strata of 5490-5610m are shown in Table 4.
The dip angle of the stratum with the actual drilling depth of 5490-5610m of the well A is inclined upwards by about 0.5 degrees, the dip angle of the stratum with the depth of 5570m is not obviously changed, the change rate of the apparent dip angle of the stratum is-0.18, the stratum with the depth of 5575m is changed from upwards inclined to downwards inclined, the change rate of the apparent dip angle of the stratum is-3.6, the dip angle is continuously increased until the well depth of 5580m is inclined, the apparent dip angle of the stratum is inclined downwards by 10.6 degrees at the highest, the absolute value of the change rate of the apparent dip angle of the stratum is calculated to be 5.12-22.54, and the drilling micro-amplitude structure is judged. The average curvature was calculated to be 2.14, and the micro-amplitude was judged to be of a gradual left-right steepness type.
TABLE 4A well 5490-5610m formation apparent dip rate of change and mean curvature of formation
EXAMPLE III
Fig. 6 shows a block diagram of a micro-structure logging while-drilling identification device, and as shown in fig. 6, the embodiment provides a micro-structure logging while-drilling identification device, which includes the following modules:
the first calculation module 610 is used for dynamically calculating the formation apparent dip angle change rate according to the first interval in the drilling process.
A first determining module 620, configured to compare the formation dip rate with a first threshold to determine whether to drill a micro-amplitude formation.
A second calculation module 630 for calculating a mean curvature of the formation in response to drilling the encountering micro-formation.
And a second determining module 640, configured to determine the morphology of the micro-amplitude structure according to the average curvature of the formation on both wings of the micro-amplitude structure.
It is understood that the first calculating module 610 may be configured to execute the step S110 in the foregoing embodiment, the first determining module 620 may be configured to execute the step S120 in the foregoing embodiment, the second calculating module 630 may be configured to execute the step S130 in the foregoing embodiment, and the second determining module 640 may be configured to execute the step S140 in the foregoing embodiment, and each step is detailed in the foregoing embodiment and is not described again here.
Further, the first calculation module 610, before dynamically calculating the formation apparent dip rate of change according to the first interval during drilling, is further configured to:
the apparent dip of the formation at a point in the drill trajectory is calculated.
In practical applications, the first calculation module 610, before dynamically calculating the formation apparent dip angle change rate according to the first interval during the drilling process, may further be configured to:
establishing a geological model based on actual drilling data; and
points in the drilling trajectory are projected onto the same azimuthal stratigraphic section of the geological model at a first interval.
That is, after calculating the formation apparent dip of a point in the borehole trajectory, the rate of change of the formation apparent dip is further calculated by projecting the point in the borehole trajectory onto the same azimuthal stratigraphic section of the geological model at the first interval.
In some cases, the first calculation module 610 calculates the rate of change of the apparent dip of the formation at a first interval during drilling using a first calculation as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Obtaining a dip angle of the drilled section for geophysical data;
and the point B is positioned on the drilling track in front of the point A.
Further, the first determining module 620 compares the change rate of the formation apparent dip angle with a first threshold value, and determines whether to drill the micro-amplitude structure, if the absolute value of the change rate of the formation apparent dip angle is greater than or equal to the first threshold value, then the micro-amplitude structure is drilled; if the absolute value of the change rate of the formation apparent dip angle is smaller than the first threshold value, no micro-amplitude structure exists.
In practical application, the first threshold value is determined according to the change rate of the apparent dip angle of the stratum with the micro-amplitude structure drilled in the current work area. The stratum apparent dip angle change rate threshold value of the micro-amplitude structure with a certain scale and large influence on the drilling track is determined by carrying out statistical analysis on the micro-amplitude structure drilled in the current work area, namely, when the stratum apparent dip angle change rate of the well section reaches the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track exists, and when the stratum apparent dip angle change rate of the well section does not reach the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track does not exist.
The method comprises the steps of counting drilled micro-amplitude structures of a work area where current identification is located, obtaining data which accord with current work area stratum structures, enabling the obtained first threshold to be a threshold capable of truly reflecting current work area stratum structure characteristics, judging the micro-amplitude structures by utilizing the first threshold, accurately identifying the stratum structures which push a drilling track in real time in the current work area drilling process, finding the micro-amplitude structures in time, and adjusting the drilling track as early as possible.
The second calculation module 630 calculates the mean curvature of the formation using a second calculation formula as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the difference value of the stratum view inclination angle between the points A and B on the drilling track, namely the variation of the stratum view inclination angle between the points A and B, Delta s is the length of the well section between the points A and B, and the point B is positioned on the drilling track in front of the point A.
In the case where a micro-amplitude structure exists in the drilling trajectory, it is necessary to further determine the form of the micro-amplitude structure to perform subsequent drilling trajectory adjustment and data analysis in combination with the actual situation, and therefore, in the present embodiment, the form of the micro-amplitude structure, for example, steep left and steep right, steep left and gentle right, and the like, is identified by calculating the average curvature of the formation calculated by the drilling trajectory in which the micro-amplitude structure exists.
The second determining module 640 is specifically configured to, when determining the form of the micro-amplitude structure according to the average curvature of the strata on both wings of the micro-amplitude structure:
determining the maximum stratum mean curvature of the micro-amplitude structure left wing; and
and judging the maximum stratum average curvature of the left wing and a second threshold value to determine the form of the micro-amplitude structure.
In practical application, the second threshold value is determined according to the relation between the form of the micro-amplitude structure drilled in the current work area and the average curvature of the stratums at two wings. And determining the relation between the structure form and the average curvature of the left wing stratum by performing statistical analysis on the micro-amplitude structure drilled in the current work area, and further determining a second threshold value as a standard for identifying the steepness and slowness of two wings of the micro-amplitude structure.
In some embodiments, the maximum stratigraphic mean curvature of the left wing may be judged against a second threshold to determine the morphology of the micro-amplitude structure according to the following rules:
if the maximum formation mean curvature of the left wing is greater than or equal to the second threshold, the morphology of the micro-amplitude structure is steep left and gentle right.
And if the maximum stratum average curvature of the left wing is smaller than a second threshold value, the micro-amplitude structure is in a shape of gradual left and steep right.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or they may be separately fabricated into various integrated circuit modules, or multiple modules or steps thereof may be fabricated into a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.
Example four
The present embodiment provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by one or more processors, the identification while drilling method for micro-structure logging as in the first embodiment is implemented.
The present embodiment provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by one or more processors, the method of the first embodiment is implemented, where the method includes:
and S110, dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process.
In practical applications, the formation dip rate is calculated during drilling at intervals of a first interval, which may be, but is not limited to, 5 meters, and the formation dip is expressed as ± 0.1 ° while the formation is near horizontal. The formation apparent dip angle change rate can accurately reflect the structural form of the well section, and along with the drilling process, the formation apparent dip angle change rate is calculated every other first interval and is compared with a first threshold value, so that whether a micro-amplitude structure exists in a drilling track or not and the range of the drilling track covered by the micro-amplitude structure can be determined.
In some cases, in the above method for identifying while drilling a micro-amplitude formation log, before dynamically calculating a formation dip angle change rate according to a first interval during drilling, step S110 further includes:
and S100, calculating the stratum apparent dip angle of a point in the drilling track.
In practical application, the formation apparent dip angle of one point can be calculated every other first interval, and then the change rate of the formation apparent dip angle of two adjacent calculated points can be obtained, so that whether a micro-amplitude structure exists in a drilling track between the two points is reflected. It is also possible to calculate the formation apparent dip at points in the drilling trajectory in real time and calculate the rate of change of the formation apparent dip once every first interval, i.e., calculate the rate of change of the formation apparent dip for two points at a first interval.
In practical applications, before dynamically calculating the formation dip angle change rate according to the first interval during the drilling process in step S110, the method may further include:
and S210, establishing a geological model based on actual drilling data.
And S220, projecting the points in the drilling track to a stratum section of the geological model in the same direction according to the first interval.
In some cases, in the above method for identifying while drilling a micro-amplitude structure logging, the step S110 of dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process includes:
step S110-1, calculating the change rate of the apparent dip angle of the stratum according to a first interval in the drilling process by using a first calculation formula, wherein the first calculation formula is as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Obtaining a dip angle of the drilled section for geophysical data;
and the point B is positioned on the drilling track in front of the point A.
Fig. 2 shows a schematic diagram of the change rate of the formation apparent dip angle, and it can be seen that the change rate of the formation apparent dip angle K can accurately reflect the change of the formation apparent dip angle between the point a and the point B on the drilling trajectory. For example, the change rate of the formation apparent dip at different positions of the micro-amplitude structure is shown in fig. 4, and it can be seen that the point where the change rate of the formation apparent dip is 0 is the inflection point of the formation shown in fig. 4.
And step S120, comparing the absolute value of the change rate of the stratum apparent dip angle with a first threshold value, and determining whether the micro-amplitude structure is drilled.
In some cases, in the above method for identifying a micro-amplitude structure while drilling in a logging tool, the step S120 of comparing the absolute value of the change rate of the formation dip angle with a first threshold to determine whether the micro-amplitude structure is drilled includes:
and S120-1, if the absolute value of the change rate of the stratum apparent dip angle is greater than or equal to a first threshold value, drilling a micro-amplitude structure.
And S120-2, if the absolute value of the change rate of the formation apparent dip angle is smaller than a first threshold value, no micro-amplitude structure exists.
In practical application, the first threshold value is determined according to the change rate of the apparent dip angle of the stratum with the micro-amplitude structure drilled in the current work area. The stratum apparent dip angle change rate threshold value of the micro-amplitude structure with a certain scale and large influence on the drilling track is determined by carrying out statistical analysis on the micro-amplitude structure drilled in the current work area, namely, when the stratum apparent dip angle change rate of the well section reaches the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track exists, and when the stratum apparent dip angle change rate of the well section does not reach the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track does not exist.
The method comprises the steps of counting drilled micro-amplitude structures of a work area where current identification is located, obtaining data which accord with current work area stratum structures, enabling the obtained first threshold to be a threshold capable of truly reflecting current work area stratum structure characteristics, judging the micro-amplitude structures by utilizing the first threshold, accurately identifying the stratum structures which push a drilling track in real time in the current work area drilling process, finding the micro-amplitude structures in time, and adjusting the drilling track as early as possible.
And S130, responding to the drilling encounter micro-amplitude structure, and calculating the average curvature of the stratum.
In some embodiments, calculating the mean curvature of the formation in step S130 includes:
calculating the mean curvature of the formation using a second calculation as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the difference value of the stratum view inclination angle between the points A and B on the drilling track, namely the variation of the stratum view inclination angle between the points A and B, the stratum view inclination angle of the point A is alpha, the stratum view inclination angle of the point B is alpha plus Delta alpha, Delta s is the length of the well section between the points A and B, and the point B is positioned on the drilling track in front of the point A.
Fig. 3 shows a schematic diagram of the average curvature of the formation, and it can be seen that the fluctuation between the point a and the point B on the drilling trajectory can be accurately reflected by the average curvature of the formation.
In the case where a micro-amplitude structure exists in the drilling trajectory, it is necessary to further determine the form of the micro-amplitude structure to perform subsequent drilling trajectory adjustment and data analysis in combination with the actual situation, and therefore, in the present embodiment, the form of the micro-amplitude structure, for example, steep left and steep right, steep left and gentle right, and the like, is identified by calculating the average curvature of the formation calculated by the drilling trajectory in which the micro-amplitude structure exists.
And S140, determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure.
In some embodiments, determining the morphology of the micro-amplitude structure based on the mean curvature of the formation on both sides of the micro-amplitude structure in step S140 includes:
s140-1, determining the maximum stratum average curvature of the micro-amplitude structure left wing;
and S140-2, judging the maximum stratum average curvature of the left wing and a second threshold value, and determining the form of the micro-amplitude structure.
In practical application, the second threshold value is determined according to the relation between the form of the micro-amplitude structure drilled in the current work area and the average curvature of the stratums at two wings. And determining the relation between the structure form and the average curvature of the left wing stratum by performing statistical analysis on the micro-amplitude structure drilled in the current work area, and further determining a second threshold value as a standard for identifying the steepness and slowness of two wings of the micro-amplitude structure.
Specifically, the apparent dip angle change rate is calculated every first interval dynamically, and then the section of the drilling track where the micro-amplitude structure begins to exist is determined, and further the drilling track range covered by the micro-amplitude structure is obtained along with the drilling depth, during the drilling process, two wings of the micro-amplitude structure may respectively relate to calculation of multiple formation average curvatures, so that in this embodiment, the calculated formation average curvature in the drilling track range related to the left wing takes the maximum value, correspondingly, the calculated formation average curvature in the drilling track range related to the right wing takes the maximum value, and the two maximum values can reflect the morphological trends of the left wing and the right wing of the micro-amplitude structure.
In some embodiments, the morphology of the micro-amplitude structure may be determined by determining the maximum stratigraphic mean curvature of the left wing and the maximum stratigraphic mean curvature of the right wing with a second threshold according to the following rules:
if the maximum formation mean curvature of the left wing is greater than or equal to the second threshold, the morphology of the micro-amplitude structure is steep left and gentle right.
And if the maximum stratum average curvature of the left wing is smaller than a second threshold value, the micro-amplitude structure is in a shape of gradual left and steep right.
In this embodiment, the storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk. The details of the method are shown in the first embodiment.
EXAMPLE five
The embodiment provides an electronic device, which includes a memory and a processor, where the memory stores a computer program, and the computer program is executed by the processor to implement the identification while drilling method for micro-structure logging in the first embodiment.
In this embodiment, the Processor may be an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, and is configured to perform the method in the above embodiments. The method implemented when the computer program running on the processor is executed may refer to the specific embodiment of the method provided in the foregoing embodiment of the present invention, and details thereof are not described herein.
When executed by the processor, the computer program realizes the identification while drilling method for micro-amplitude structure logging of the first embodiment:
and S110, dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process.
In practical applications, the formation dip rate is calculated during drilling at intervals of a first interval, which may be, but is not limited to, 5 meters, and the formation dip is expressed as ± 0.1 ° while the formation is near horizontal. The formation apparent dip angle change rate can accurately reflect the structural form of the well section, and along with the drilling process, the formation apparent dip angle change rate is calculated every other first interval and is compared with a first threshold value, so that whether a micro-amplitude structure exists in a drilling track or not and the range of the drilling track covered by the micro-amplitude structure can be determined.
In some cases, in the above method for identifying while drilling a micro-amplitude formation log, before dynamically calculating a formation dip angle change rate according to a first interval during drilling, step S110 further includes:
and S100, calculating the stratum apparent dip angle of a point in the drilling track.
In practical application, the formation apparent dip angle of one point can be calculated every other first interval, and then the change rate of the formation apparent dip angle of two adjacent calculated points can be obtained, so that whether a micro-amplitude structure exists in a drilling track between the two points is reflected. It is also possible to calculate the formation apparent dip at points in the drilling trajectory in real time and calculate the rate of change of the formation apparent dip once every first interval, i.e., calculate the rate of change of the formation apparent dip for two points at a first interval.
In practical applications, before dynamically calculating the formation dip angle change rate according to the first interval during the drilling process in step S110, the method may further include:
and S210, establishing a geological model based on actual drilling data.
And S220, projecting the points in the drilling track to a stratum section of the geological model in the same direction according to the first interval.
In some cases, in the above method for identifying while drilling a micro-amplitude structure logging, the step S110 of dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process includes:
step S110-1, calculating the change rate of the apparent dip angle of the stratum according to a first interval in the drilling process by using a first calculation formula, wherein the first calculation formula is as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Obtaining a dip angle of the drilled section for geophysical data;
and the point B is positioned on the drilling track in front of the point A.
Fig. 2 shows a schematic diagram of the change rate of the formation apparent dip angle, and it can be seen that the change rate of the formation apparent dip angle K can accurately reflect the change of the formation apparent dip angle between the point a and the point B on the drilling trajectory. For example, the change rate of the formation apparent dip at different positions of the micro-amplitude structure is shown in fig. 4, and it can be seen that the point where the change rate of the formation apparent dip is 0 is the inflection point of the formation shown in fig. 4.
And step S120, comparing the absolute value of the change rate of the stratum apparent dip angle with a first threshold value, and determining whether the micro-amplitude structure is drilled.
In some cases, in the above method for identifying a micro-amplitude structure while drilling in a logging tool, the step S120 of comparing the absolute value of the change rate of the formation dip angle with a first threshold to determine whether the micro-amplitude structure is drilled includes:
and S120-1, if the absolute value of the change rate of the stratum apparent dip angle is greater than or equal to a first threshold value, drilling a micro-amplitude structure.
And S120-2, if the absolute value of the change rate of the formation apparent dip angle is smaller than a first threshold value, no micro-amplitude structure exists.
In practical application, the first threshold value is determined according to the change rate of the apparent dip angle of the stratum with the micro-amplitude structure drilled in the current work area. The stratum apparent dip angle change rate threshold value of the micro-amplitude structure with a certain scale and large influence on the drilling track is determined by carrying out statistical analysis on the micro-amplitude structure drilled in the current work area, namely, when the stratum apparent dip angle change rate of the well section reaches the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track exists, and when the stratum apparent dip angle change rate of the well section does not reach the threshold value, the micro-amplitude structure with a certain scale and large influence on the drilling track does not exist.
The method comprises the steps of counting drilled micro-amplitude structures of a work area where current identification is located, obtaining data which accord with current work area stratum structures, enabling the obtained first threshold to be a threshold capable of truly reflecting current work area stratum structure characteristics, judging the micro-amplitude structures by utilizing the first threshold, accurately identifying the stratum structures which push a drilling track in real time in the current work area drilling process, finding the micro-amplitude structures in time, and adjusting the drilling track as early as possible.
And S130, responding to the drilling encounter micro-amplitude structure, and calculating the average curvature of the stratum.
In some embodiments, calculating the mean curvature of the formation in step S130 includes:
calculating the mean curvature of the formation using a second calculation as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the difference value of the stratum view inclination angle between the points A and B on the drilling track, namely the variation of the stratum view inclination angle between the points A and B, Delta s is the length of the well section between the points A and B, and the point B is positioned on the drilling track in front of the point A.
Fig. 3 shows a schematic diagram of the average curvature of the formation, and it can be seen that the fluctuation between the point a and the point B on the drilling trajectory can be accurately reflected by the average curvature of the formation.
In the case where a micro-amplitude structure exists in the drilling trajectory, it is necessary to further determine the form of the micro-amplitude structure to perform subsequent drilling trajectory adjustment and data analysis in combination with the actual situation, and therefore, in the present embodiment, the form of the micro-amplitude structure, for example, steep left and steep right, steep left and gentle right, and the like, is identified by calculating the average curvature of the formation calculated by the drilling trajectory in which the micro-amplitude structure exists.
And S140, determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure.
In some embodiments, determining the morphology of the micro-amplitude structure based on the mean curvature of the formation on both sides of the micro-amplitude structure in step S140 includes:
step S140-1, determining the maximum stratum average curvature of the left wing and the maximum stratum average curvature of the right wing of the micro-amplitude structure;
and S140-2, judging the maximum stratum average curvature of the left wing and the maximum stratum average curvature of the right wing and a second threshold value, and determining the form of the micro-width structure.
In practical application, the second threshold value is determined according to the relation between the form of the micro-amplitude structure drilled in the current work area and the average curvature of the stratums at two wings. And determining the relation between the structure form and the average curvature of the left wing stratum by performing statistical analysis on the micro-amplitude structure drilled in the current work area, and further determining a second threshold value as a standard for identifying the steepness and slowness of two wings of the micro-amplitude structure.
Specifically, the apparent dip angle change rate is calculated every first interval dynamically, and then the section of the drilling track where the micro-amplitude structure begins to exist is determined, and further the drilling track range covered by the micro-amplitude structure is obtained along with the drilling depth, during the drilling process, two wings of the micro-amplitude structure may respectively relate to calculation of multiple formation average curvatures, so that in this embodiment, the calculated formation average curvature in the drilling track range related to the left wing takes the maximum value, correspondingly, the calculated formation average curvature in the drilling track range related to the right wing takes the maximum value, and the two maximum values can reflect the morphological trends of the left wing and the right wing of the micro-amplitude structure.
In some embodiments, the morphology of the micro-amplitude structure may be determined by determining the maximum stratigraphic mean curvature of the left wing and the maximum stratigraphic mean curvature of the right wing with a second threshold according to the following rules:
if the maximum formation mean curvature of the left wing is greater than or equal to the second threshold, the morphology of the micro-amplitude structure is steep left and gentle right.
And if the maximum stratum average curvature of the left wing is smaller than a second threshold value, the micro-amplitude structure is in a shape of gradual left and steep right.
In the embodiments provided in the present invention, it should be understood that the disclosed system and method can be implemented in other ways. The system and method embodiments described above are merely illustrative.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A micro-amplitude structure logging while-drilling identification method is characterized by comprising the following steps:
dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process;
comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value to determine whether the micro-amplitude structure is drilled or not;
calculating the average curvature of the stratum in response to the drilling encounter micro-amplitude structure;
and determining the form of the micro-amplitude structure according to the average curvature of the stratums of the two wings of the micro-amplitude structure.
2. The method for identifying while drilling of micro-amplitude structure logging in claim 1, wherein the step of dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process comprises the following steps:
calculating a formation apparent dip rate of change at a first interval during drilling using a first calculation as follows:
in the formula, K is the change rate of the apparent dip angle of the stratum;
ΔRAthe formation apparent dip angle of the point A on the drilling track is obtained;
ΔRBthe formation apparent dip angle of a point B on the drilling track is obtained;
K1for the stratum inclination angle of the drilled well section, when the drilled well section before the point B reaches the preset length, K1Is the stratum inclination angle of the drilled section with the preset length before the point B, and when the drilled section before the point B is less than the preset length, K1Drilling section stratigraphic dip angle for geophysical data reading;
the point B is positioned on the forward drilling track of the point A.
3. The method for identifying a micro-amplitude formation logging while drilling as claimed in claim 1, wherein the step of comparing the absolute value of the change rate of the formation dip angle with a first threshold value to determine whether to drill a micro-amplitude formation comprises:
and if the absolute value of the change rate of the stratum apparent dip angle is greater than or equal to a first threshold value, drilling the micro-amplitude structure.
4. The method for identifying while drilling of micro-amplitude configuration logging according to claim 1, wherein the calculating of the mean curvature of the stratum comprises:
calculating the mean curvature of the formation using a second calculation as follows:
C＝|△α/△s|，
in the formula, C is the average curvature of the stratum, Delta alpha is the stratum view dip angle difference between the point A and the point B on the drilling track, Delta s is the well section length between the point A and the point B, and the point B is positioned on the drilling track in front of the point A.
5. The method for identifying a micro-amplitude structure logging while drilling as claimed in claim 1, wherein the first threshold is determined according to a change rate of a formation dip angle of a micro-amplitude structure drilled in a current work area.
6. The method for identifying the micro-amplitude structure during logging while drilling as claimed in claim 1, wherein the determining the morphology of the micro-amplitude structure according to the average curvature of the stratum on both wings of the micro-amplitude structure comprises:
determining a maximum stratigraphic mean curvature of the micro-amplitude construct left wing;
and judging the maximum stratum average curvature of the left wing and a second threshold value, and determining the form of the micro-amplitude structure.
7. The method for identifying while drilling of micro-amplitude configuration logging as claimed in claim 1, wherein before dynamically calculating the change rate of the formation apparent dip angle according to the first interval during the drilling process, the method further comprises:
a formation apparent dip angle is calculated for a point in the borehole trajectory according to the first interval.
8. A device for identifying a micro-structure logging while drilling is characterized by comprising:
the first calculation module is used for dynamically calculating the change rate of the formation apparent dip angle according to the first interval in the drilling process;
the first determination module is used for comparing the absolute value of the change rate of the formation apparent dip angle with a first threshold value and determining whether the micro-amplitude structure is drilled or not;
a second calculation module for calculating the mean curvature of the formation in response to the drilling encounter microform;
and the second determining module is used for determining the form of the micro-amplitude structure according to the average curvature of the stratums of two wings of the micro-amplitude structure.
9. A storage medium having stored thereon a computer program that, when executed by one or more processors, implements the method of micro-formation logging while drilling identification as claimed in any one of claims 1 to 7.
10. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the method for identifying while drilling micro-formation logging as claimed in any one of claims 1 to 7.
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