CN112922589B - Pinch-out line determining method, pinch-out line determining device, terminal and storage medium - Google Patents
Pinch-out line determining method, pinch-out line determining device, terminal and storage medium Download PDFInfo
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- CN112922589B CN112922589B CN202110148626.7A CN202110148626A CN112922589B CN 112922589 B CN112922589 B CN 112922589B CN 202110148626 A CN202110148626 A CN 202110148626A CN 112922589 B CN112922589 B CN 112922589B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The application discloses a method, a device, a terminal and a storage medium for determining a pinch-out line, and belongs to the technical field of geological exploration. The method comprises the following steps: acquiring a plurality of seismic section views of a target stratum, and determining a first sharp vanishing point of the seismic section views according to the energy of the target stratum for each seismic section view in the plurality of seismic section views under the condition that the seismic data frequency of the target stratum is larger than a preset frequency, wherein the first sharp vanishing point is a point with abrupt change of the energy in the seismic section views; determining a second sharp vanishing point according to a fault line of the target stratum, wherein the second sharp vanishing point is a point with abrupt change in depth under the condition of the same energy; determining a target point of the seismic section according to the first point and the second point; the method has the advantages that the target pinch points of the plurality of seismic section views are connected, the pinch lines of the paste salt layer are determined, the efficiency of determining the pinch lines of the paste salt layer is improved, the accuracy of determining the pinch lines of the paste salt layer is improved, and the accuracy of exploring the paste salt layer is further improved.
Description
Technical Field
The application relates to the technical field of geological exploration, in particular to a method, a device, a terminal and a storage medium for determining a pinch-out line.
Background
Before hydrocarbon resources are exploited, hydrocarbon reservoirs need to be explored, which are located below a cream-salted layer, an important sedimentary phase of carbonate rock. The pinch-out line of the paste salt layer plays an important role in determining the effective range of the cover layer of the oil and gas reservoir and determining other reservoirs, and can effectively guide the drilling design of the oil and gas reservoir and make breakthrough.
At present, in the process of drilling the stratum, drilling data obtained by drilling are recorded, and then the pinch-out line of a cream salt layer in the stratum is manually determined according to the drilling data and the exploration experience of operators, so that the exploration success rate is low.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for determining a pinch-out line, which can automatically determine the pinch-out line of a paste salt layer according to parameters of a target stratum, so that the efficiency of determining the pinch-out line of the paste salt layer is improved, the accuracy of determining the pinch-out line of the paste salt layer is improved, and the accuracy of exploring an oil-gas reservoir under the paste salt layer and other reservoirs at the boundary of the paste salt layer is further improved. The technical scheme provided by the embodiment of the application is as follows:
in one aspect, an embodiment of the present application provides a method for determining a pinch-out line, the method including:
Acquiring a plurality of seismic profiles of a target stratum, wherein the target stratum comprises a surrounding stratum and a paste salt layer;
under the condition that the seismic data frequency of the target stratum is determined to be larger than a preset frequency, for each seismic profile in the plurality of seismic profiles, determining a first sharp vanishing point of the seismic profile according to the energy of the target stratum, wherein the first sharp vanishing point is a point with abrupt change of the energy in the seismic profile;
determining a second sharp vanishing point according to the fault line of the target stratum, wherein the second sharp vanishing point is a point with abrupt change in depth under the condition of the same energy;
determining a target point of the seismic profile from the first point and the second point;
and connecting the target sharp vanishing points of the plurality of seismic section views, and determining the pinch-out line of the paste salt layer.
In one possible implementation, the method further includes:
determining, for each of the plurality of seismic profiles, the second point vanishing point according to a fault line of the target formation, if it is determined that the seismic data frequency of the target formation is not greater than the preset frequency;
and connecting second pinch-out points of the plurality of seismic sectional views, and determining pinch-out lines of the paste salt layer.
In another possible implementation, the method further includes:
acquiring seismic data of the target stratum;
and determining the frequency corresponding to the maximum amplitude as the seismic data frequency based on the seismic data.
In another possible implementation, the determining the first point vanishing point of the seismic profile from the energy of the target formation includes:
in the seismic profile, acquiring an energy difference value of any two adjacent first target points at the same depth, wherein the interval between the any two adjacent first target points is a first preset width;
and under the condition that the determined energy difference value is larger than the target energy difference value, determining a first target point with smaller energy in two adjacent first target points corresponding to the energy difference value larger than the target energy difference value as the first point vanishing point.
In another possible implementation manner, the determining the second point of extinction according to the fault line of the target stratum includes:
and determining an intersection point of a fault line of the target stratum and a stratum line of the target stratum as the second point of extinction in the seismic profile.
In another possible implementation, the method further includes:
In the seismic profile, acquiring depth difference values of any two adjacent second target points under the same energy, wherein the interval between the two adjacent second target points is a second preset width;
and connecting a second target point corresponding to the depth difference value larger than the target depth difference value under the condition that the determined depth difference value is larger than the target depth difference value, and determining a line obtained by connection as the fault line.
In another possible implementation, the method further includes:
in the seismic section, if a plurality of fault lines are determined, a fault line located at a first position is determined as a fault line for determining the second point vanishing point.
In another possible implementation, the determining the target point of the seismic profile from the first point of extinction and the second point of extinction includes:
and determining a position point corresponding to the average coordinate of the coordinates of the first point vanishing point and the coordinates of the second point vanishing point as the target point vanishing point.
In another aspect, an embodiment of the present application provides an pinch-out line determining apparatus, including:
the system comprises a profile acquisition module, a profile analysis module and a profile analysis module, wherein the profile acquisition module is used for acquiring a plurality of seismic profiles of a target stratum, and the target stratum comprises a surrounding stratum and a paste salt layer;
The sharp vanishing point determining module is used for determining a first sharp vanishing point of each of the plurality of seismic section views according to the energy of the target stratum under the condition that the seismic data frequency of the target stratum is determined to be larger than a preset frequency, wherein the first sharp vanishing point is a point with abrupt change of the energy in the seismic section views;
the pinch-out point determining module is used for determining a second pinch-out point according to the fault line of the target stratum, wherein the second pinch-out point is a point with abrupt change in depth under the condition of the same energy;
the pinch-out point determining module is used for determining a target pinch-out point of the seismic section according to the first pinch-out point and the second pinch-out point;
and the pinch-out line determining module is used for connecting the target pinch-out points of the plurality of seismic section views and determining the pinch-out line of the paste salt layer.
In one possible implementation, the apparatus further includes:
the pinch-out point determining module is used for determining the second pinch-out point according to a fault line of the target stratum for each of the plurality of seismic sectional views under the condition that the seismic data frequency of the target stratum is not greater than the preset frequency;
And the pinch-out line determining module is used for connecting the second pinch-out points of the plurality of seismic section views and determining the pinch-out line of the paste salt layer.
In another possible implementation, the apparatus further includes:
the data acquisition module is used for acquiring the seismic data of the target stratum;
and the frequency determining module is used for determining the frequency corresponding to the maximum amplitude as the seismic data frequency based on the seismic data.
In another possible implementation manner, the pinch-out point determining module includes:
the difference value acquisition unit is used for acquiring the energy difference value of any two adjacent first target points at the same depth in the seismic profile, wherein the interval between the any two adjacent first target points is a first preset width;
and the sharp vanishing point determining unit is used for determining a first target point with smaller energy in two adjacent first target points corresponding to the energy difference value larger than the target energy difference value as the first sharp vanishing point under the condition that the determined energy difference value is larger than the target energy difference value.
In another possible implementation manner, the pinch-out point determining module is configured to determine, in the seismic section, an intersection point of a fault line of the target stratum and a stratum line of the target stratum as the second point of pinch-out.
In another possible implementation, the apparatus further includes:
the difference value acquisition module is used for acquiring depth difference values of any two adjacent second target points under the same energy in the seismic profile, and the interval between the two adjacent second target points is a second preset width;
and the fault line determining module is used for connecting a second target point corresponding to the depth difference value larger than the target depth difference value under the condition that the determined depth difference value is larger than the target depth difference value, and determining a line obtained by connection as the fault line.
In another possible implementation manner, the fault line determining module is configured to determine, in the seismic section, a fault line located at a first position as a fault line for determining the second point vanishing point if a plurality of fault lines are determined.
In another possible implementation manner, the pinch-out point determining module is configured to determine, as the target pinch-out point, a position point corresponding to an average coordinate of the coordinates of the first pinch-out point and the coordinates of the second pinch-out point.
In another aspect, a terminal is provided that includes a processor and a memory having at least one program code stored therein, the at least one program code being loaded and executed by the processor to implement operations as performed in the pinch-out line determination method.
In another aspect, a computer-readable storage medium having at least one program code stored therein is provided, the at least one program code loaded and executed by a processor to implement an operation as performed in the pinch-out line determination method.
In still another aspect, there is provided a computer program product or computer program including computer program code stored in a computer-readable storage medium, the computer program code being read from the computer-readable storage medium by a processor of a terminal, the computer program code being executed by the processor so that the terminal implements the operations performed in the pinch-out line determination method as described in the above aspect.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
according to the method, the device, the equipment and the storage medium provided by the embodiment of the application, under the condition that the seismic data frequency of the target stratum is determined to be larger than the preset frequency, the target point vanishing point of each seismic section in the plurality of seismic section is determined according to the energy and the depth of the target stratum and the fault line of the target stratum, the target point vanishing points of the plurality of seismic section are connected to form the pinch-out line of the paste salt layer in the target stratum, the pinch-out line of the paste salt layer can be automatically determined according to the parameters of the target stratum, the efficiency of determining the pinch-out line of the paste salt layer is improved, the accuracy of determining the pinch-out line of the paste salt layer is improved, and the accuracy of exploring the oil gas reservoir under the paste salt layer and other reservoirs of the paste salt layer boundary is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for determining a pinch-out line according to an embodiment of the present application;
fig. 2 is a flowchart of a method for determining a pinch-out line according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a correspondence between amplitude and frequency according to an embodiment of the present application;
FIG. 4 is a schematic illustration of a seismic profile provided by an embodiment of the application;
FIG. 5 is a schematic illustration of a determined first point vanishing point provided by an embodiment of the application;
FIG. 6 is a schematic illustration of a determined second point vanishing point provided by an embodiment of the application;
fig. 7 is a schematic structural view of an pinch-out line determining apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural view of an pinch-out line determining apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
The method provided by the embodiment of the application is applied to the geological exploration field, the oil and gas resources are stored in the stratum, the stratum is required to be explored before the oil and gas resources are exploited, and the pinch-out line of the paste salt layer can be determined by adopting the method provided by the embodiment of the application, so that the position of the relevant oil and gas reservoir is determined, and the assistance is provided for exploiting the resources.
Fig. 1 is a flowchart of a method for determining a pinch-out line according to an embodiment of the present application. Referring to fig. 1, the method is applied to a terminal, and includes:
101. a plurality of seismic profiles of a target formation are acquired.
The target stratum comprises a surrounding stratum and a paste salt layer, wherein the surrounding stratum is a rock stratum, and sodium chloride and other inorganic salts are stored in the paste salt layer.
In the embodiment of the application, if the target stratum needs to be explored, firstly, scanning the target stratum through exploration equipment to obtain a plurality of seismic section views of the target stratum, wherein each seismic section view is used for representing energy corresponding to different depths of the target stratum.
In the subsequent process, a target point vanishing point is determined from each seismic section, and then the pinch-out line of the paste salt layer is determined according to the determined target point vanishing points.
102. In the event that the frequency of the seismic data of the target formation is determined to be greater than the predetermined frequency, the following steps 103-105 are performed for each of the plurality of seismic profiles.
103. A first sharp vanishing point of the seismic profile is determined based on the energy of the target formation.
The first sharp vanishing point is a point where energy is suddenly changed in the seismic profile.
When the target stratum is explored, the seismic data frequency of the target stratum is detected, the difference of the seismic data frequency can lead to whether the energy in the seismic profile is clear, and under the condition that the seismic data frequency is larger than the preset frequency, the first sharp vanishing point of the seismic profile is determined according to the energy of the target stratum.
If the frequency of the seismic data of the target stratum is determined to be larger than the preset frequency, determining a first sharp vanishing point of each seismic profile in the acquired plurality of seismic profiles according to the energy of the target stratum.
The preset frequency is set by the operator, or by the terminal, or by other means.
104. And determining a second point vanishing point according to the fault line of the target stratum.
In the embodiment of the application, each seismic section view further comprises a fault line, wherein the fault line in each seismic section view is used for representing a line with the same energy but abrupt depth, and a second sharp vanishing point is determined according to the fault line of the seismic section view, and the second sharp vanishing point is a point with the abrupt depth under the condition of the same energy.
105. And determining a target point of the seismic section according to the first point and the second point.
In the embodiment of the application, the first point vanishing point and the second point vanishing point of each seismic section are determined through the steps, and then the target point vanishing point of each seismic section is determined according to the first point vanishing point and the second point vanishing point of each seismic section. And, the target tip vanishing point may be understood as a point on the pinch-out line of the target formation in the corresponding seismic section.
106. And connecting the target pinch-out points of the plurality of seismic sectional views, and determining the pinch-out line of the paste salt layer.
And because the target point vanishing point of each of the plurality of seismic sectional views is determined, connecting the target point vanishing points of the plurality of seismic sectional views to form a pinch-out line of the paste salt layer, determining the position of the paste salt layer according to the pinch-out line connected with the pinch-out line, and further developing the target stratum.
According to the method provided by the embodiment of the application, under the condition that the seismic data frequency of the target stratum is larger than the preset frequency, the target point vanishing point of each seismic section in the plurality of seismic section is determined according to the energy and depth of the target stratum and the fault line of the target stratum, the point vanishing points of the targets of the plurality of seismic section are connected to form the point vanishing line of the paste salt layer in the target stratum, the point vanishing line of the paste salt layer can be automatically determined according to the parameters of the target stratum, the efficiency of determining the point vanishing line of the paste salt layer is improved, the accuracy of determining the point vanishing line of the paste salt layer is improved, and the accuracy of exploring the oil gas reservoir under the paste salt layer and other reservoirs of the paste salt layer boundary is further improved.
Fig. 2 is a flowchart of a method for determining a pinch-out line according to an embodiment of the present application. Referring to fig. 2, the method is applied to a terminal, which may be a mobile phone, a tablet computer, a personal computer, or the like. The method comprises the following steps:
201. seismic data of the target formation is acquired.
In the embodiment of the application, when the target stratum is explored, the seismic data of the target stratum are acquired, and the seismic data frequency is determined according to the seismic data.
Wherein the seismic data is used to indicate frequencies and corresponding amplitudes employed in transmitting seismic waves to a target formation during an exploration. The seismic data includes amplitude and frequency correspondence.
202. Based on the seismic data, a frequency corresponding to the maximum amplitude is determined as the seismic data frequency.
The seismic data comprises a plurality of amplitudes and a plurality of frequencies, one amplitude corresponds to one frequency, the maximum amplitude in the plurality of amplitudes is determined after the amplitude is compared, and the frequency corresponding to the maximum amplitude is determined as the seismic data frequency.
For example, as shown in fig. 3, the correspondence between the amplitude and the frequency in the seismic data is determined, and the maximum amplitude is determined from the correspondence shown in fig. 3, and the frequency corresponding to the maximum amplitude is 34 hz, and then the frequency of the seismic data is determined to be 34 hz.
203. A plurality of seismic profiles of a target formation are acquired.
Before the target stratum is mined, the target stratum is firstly explored, a plurality of seismic section views of the target stratum are obtained, and then the pinch-out line of the paste salt layer of the target stratum is determined according to the energy of the target stratum and the seismic section views.
For example, the acquired seismic profile is shown in FIG. 4, where the connected triangles represent energy in the seismic data and the smoother the connected triangles represent the stable formation structure.
204. In the event that the frequency of the seismic data of the target formation is determined to be greater than the predetermined frequency, the following steps 205-207 are performed for each of the plurality of seismic profiles.
In the embodiment of the application, the determined seismic data frequency is different, so that the pinch-out line of the paste salt layer of the target stratum is determined in different modes, if the seismic data frequency of the target stratum is larger than the preset frequency, the seismic data resolution is high, the quality of the obtained seismic profile is high, the seismic reflection characteristics of the paste salt layer are clear, and the position of the pinch-out line is determined through the seismic wave impedance energy formed by the paste salt layer and the upper and lower surrounding rock layers. If the seismic data frequency of the target stratum is not greater than the target frequency, the seismic reflection characteristics of the paste salt layer are unclear, and the position of the pinch-out line cannot be determined through the seismic wave impedance energy formed by the paste salt layer and the upper and lower surrounding rock layers, so that the position of the pinch-out line needs to be determined through fault lines.
Wherein the preset frequency is set by the terminal, or by an operator, or by other means. For example, the predetermined frequency is 20 hertz, 25 hertz, or other value.
205. A first sharp vanishing point of the seismic profile is determined based on the energy of the target formation.
In the embodiment of the application, if the pinch-out line of the paste salt layer needs to be determined, under the condition that the seismic data frequency of the target stratum is greater than the target frequency, the position of the pinch-out line of the paste salt layer can be determined according to the energy of the target stratum, the pinch-out line is the junction of the surrounding rock layer and the paste salt layer, and the energy of the seismic data is suddenly changed, so that the first sharp vanishing point of the seismic profile is determined according to the suddenly changed energy of the target stratum, and the first sharp vanishing point is the point where the energy of the seismic profile suddenly changed.
Optionally, in the seismic profile, the energy difference value of any two adjacent first target points under the same depth is obtained, and in the case that the determined energy difference value is greater than the target energy difference value, the first target point with smaller energy in the two adjacent first target points corresponding to the energy difference value greater than the target energy difference value is determined as the first point vanishing point of the seismic profile.
The interval between any two adjacent first target points is a first preset width, and the first preset width is represented by depth. The first preset width and the target energy difference are set by the terminal, or by an operator, or by other means.
For example, as shown in fig. 5, the point at the position pointed by the arrow can be determined as the first point vanishing point in the above manner.
In the embodiment of the application, the first preset width represents the interval between the two obtained first target points, the smaller the first preset width is, the smaller the interval between the two obtained first target points of the energy difference is, the higher the accuracy of the determined first point vanishing point is, and the larger the first preset width is, the higher the interval between the two obtained first target points of the energy difference is, the lower the accuracy of the determined first point vanishing point is.
After the terminal acquires a plurality of seismic section views, determining a first point vanishing point of each seismic section view under the condition that the frequency of the seismic data is larger than a preset frequency, acquiring the energy difference value of any two adjacent first target points in the seismic section view under the same depth for each seismic section view, if the determined energy difference value is larger than the target energy difference value, indicating that the two adjacent first target points are positioned in different rock strata, and determining the first target point with smaller energy in the two adjacent first target points as the first point vanishing point.
206. And determining a second point vanishing point according to the fault line of the target stratum.
Wherein the second sharp vanishing point is a point where the depth is abrupt under the same energy.
In the embodiment of the application, as the fault line exists in the target stratum, the point with the depth suddenly changed under the condition of the same energy can be determined according to the fault line, and the point determined by adopting the fault line is determined as the second point vanishing point.
Optionally, in the seismic profile, an intersection of a fault line of the target formation and a formation line of the target formation is determined as a second point of extinction.
The stratum line of the target stratum is a preset line in the seismic section. For each of the acquired plurality of seismic profiles, determining an intersection of a fault line of the target formation in the seismic profile and a formation line of the target formation as a second point of extinction.
In some embodiments, in the seismic profile, depth differences of any two adjacent second target points under the same energy are acquired, and in the case that the determined depth difference is greater than the target depth difference, the second target points corresponding to the depth difference greater than the target depth difference are connected, and a line obtained by connection is determined as a fault line.
The distance between two adjacent second target points is a second preset width, and the second preset width is represented by energy. The second preset width and target depth difference is set by the terminal, or by an operator, or by other means.
In the embodiment of the present application, the second preset width represents the interval between the two obtained second target points, the smaller the second preset width is, the smaller the interval between the two second target points for obtaining the depth difference value is, the higher the accuracy of the determined second point vanishing point is, and the larger the second preset width is, the higher the interval between the two second target points for obtaining the depth difference value is, the lower the accuracy of the determined second point vanishing point is.
After the terminal acquires a plurality of seismic section images, determining a second point vanishing point of each seismic section image under the condition that the frequency of the seismic data is larger than the preset frequency, acquiring the depth difference value of any two adjacent second target points in the seismic section images under the same energy for each seismic section image, if the determined depth difference value is larger than the target depth difference value, indicating that faults exist between the two adjacent second target points, connecting the second target points corresponding to the depth difference value larger than the target depth difference value, and determining a line obtained by connection as a fault line.
For example, as shown in fig. 6, 6 tomographic lines are determined according to the above manner, and the tomographic line located at the first position is determined as the tomographic line for determining the second point vanishing point.
It should be noted that, in the embodiment of the present application, when the second target points corresponding to the depth difference value greater than the target depth difference value are connected, the plurality of second target points having the adjacent relationship are connected, and the second target points having no adjacent relationship are not connected.
Alternatively, in the seismic profile, if a plurality of fault lines are determined, the fault line located at the first position is determined as the fault line for determining the second point vanishing point.
In the embodiment of the application, a plurality of fault lines may be determined in a seismic section, wherein the fault line at the first position indicates that a fault has been generated therein, and the stratum behind the fault line does not belong to the salt layer, so that the fault line at the first position is determined as the fault line for determining the second point vanishing point.
207. And determining the position point corresponding to the average coordinate of the coordinates of the first point vanishing point and the coordinates of the second point vanishing point as the target point vanishing point.
In the embodiment of the application, after the first point vanishing point and the second point vanishing point of each seismic section are determined, as the determined first point vanishing point and the determined second point vanishing point both have coordinates, average coordinates are obtained according to the coordinates of the first point vanishing point and the second point vanishing point, and the position point corresponding to the average coordinates is determined as the target point vanishing point.
208. And connecting the target pinch-out points of the plurality of seismic sectional views, and determining the pinch-out line of the paste salt layer.
In the embodiment of the application, after determining the target point vanishing point in each seismic section by executing the steps 205-207 for a plurality of times, the target point vanishing points of the seismic section are connected to determine the point vanishing line of the salt layer.
It should be noted that, the steps 205-207 in the embodiment of the present application are only described in the case that the frequency of the seismic data is greater than the preset frequency. In another embodiment, if the frequency of the seismic data is not greater than the preset frequency, determining a second pinch-out point according to the fault line of the target stratum for each of the plurality of seismic profiles, and connecting the second pinch-out points of the plurality of seismic profiles to determine a pinch-out line of the salt layer.
In the case that the frequency of the seismic data is not greater than the preset frequency, the step of determining the second point according to the fault line of the target stratum is similar to the step 206, and will not be described herein.
According to the method provided by the embodiment of the application, the frequency corresponding to the maximum amplitude is determined as the seismic data frequency, and under the condition that the seismic data frequency of the target stratum is determined to be larger than the preset frequency, the target point vanishing point of each seismic section in the plurality of seismic section images is determined according to the energy and depth of the target stratum and the fault line of the target stratum, and the target point vanishing points of the plurality of seismic section images are connected to form the pinch-out line of the paste salt layer in the target stratum, so that the pinch-out line of the paste salt layer can be automatically determined according to the parameters of the target stratum, the efficiency of determining the pinch-out line of the paste salt layer is improved, the accuracy of determining the pinch-out line of the paste salt layer is improved, and the accuracy of exploring the oil-gas reservoir under the paste salt layer and other reservoirs of the paste salt layer boundary is further improved.
Fig. 7 is a schematic structural view of an pinch-out line determining apparatus according to an embodiment of the present application. Referring to fig. 7, the apparatus includes:
a profile acquisition module 701, configured to acquire a plurality of seismic profiles of a target stratum, where the target stratum includes a surrounding stratum and a salt layer;
the spike vanishing point determining module 702 is configured to determine, for each of the plurality of seismic profiles, a first spike vanishing point of the seismic profile according to energy of the target stratum, where the first spike vanishing point is a point where energy in the seismic profile is abrupt, when it is determined that the frequency of the seismic data of the target stratum is greater than a preset frequency;
the point vanishing point determining module 702 is configured to determine a second point vanishing point according to a fault line of the target stratum, where the second point vanishing point is a point with a depth abrupt change under the condition of the same energy;
the tip vanishing point determining module 702 is configured to determine a target tip vanishing point of the seismic section according to the first tip vanishing point and the second tip vanishing point;
the pinch-out line determining module 703 is used for connecting the target pinch-out points of the plurality of seismic section views and determining pinch-out lines of the salt layer.
According to the device provided by the embodiment of the application, under the condition that the seismic data frequency of the target stratum is larger than the preset frequency, the target point vanishing point of each seismic section in the plurality of seismic section is determined according to the energy and depth of the target stratum and the fault line of the target stratum, the target point vanishing points of the plurality of seismic section are connected to form the point vanishing line of the paste salt layer in the target stratum, the point vanishing line of the paste salt layer can be automatically determined according to the parameters of the target stratum, the efficiency of determining the point vanishing line of the paste salt layer is improved, the accuracy of determining the point vanishing line of the paste salt layer is improved, and the accuracy of exploring the oil gas reservoir under the paste salt layer and other reservoirs of the paste salt layer boundary is further improved.
In one possible implementation, the apparatus further includes:
the spike vanishing point determining module 702 is configured to determine, for each of the plurality of seismic profiles, a second spike vanishing point according to a fault line of the target stratum if it is determined that the frequency of the seismic data of the target stratum is not greater than a preset frequency;
the pinch-out line determining module 703 is configured to connect the second pinch-out points of the plurality of seismic profiles and determine a pinch-out line of the salt layer.
In another possible implementation, the apparatus further includes:
a data acquisition module 704, configured to acquire seismic data of a target stratum;
the frequency determining module 705 is configured to determine, based on the seismic data, a frequency corresponding to the maximum amplitude as the seismic data frequency.
In another possible implementation, the pinch-out point determination module 702 includes:
a difference value obtaining unit 7021, configured to obtain, in the seismic profile, an energy difference value of any two adjacent first target points at the same depth, where a space between any two adjacent first target points is a first preset width;
the pinch-out point determining unit 7022 is configured to determine, as the first pinch-out point, a first target point having smaller energy among two adjacent first target points corresponding to an energy difference value larger than the target energy difference value, in a case where the determined energy difference value is larger than the target energy difference value.
In another possible implementation, the pinch-out point determination module 702 is configured to determine, in the seismic profile, an intersection of a fault line of the target formation and a formation line of the target formation as the second point of pinch-out.
In another possible implementation, the apparatus further includes:
the difference value obtaining module 706 is configured to obtain, in the seismic profile, a depth difference value of any two adjacent second target points under the same energy, where an interval between the two adjacent second target points is a second preset width;
and a fault line determining module 707, configured to connect a second target point corresponding to a depth difference value greater than the target depth difference value, and determine a line obtained by connection as a fault line, where the determined depth difference value is greater than the target depth difference value.
In another possible implementation, the fault line determination module 707 is configured to determine, in the seismic profile, a fault line located at the first location as a fault line for determining the second point vanishing point if a plurality of fault lines are determined.
In another possible implementation, the pinch-out point determining module 702 is configured to determine, as the target pinch-out point, a location point corresponding to an average of coordinates of the first pinch-out point and the coordinates of the second pinch-out point.
It should be noted that: the pinch-out line determining device provided in the above embodiment only illustrates the division of the above functional modules when determining the safety performance parameter, and in practical application, the above functional allocation is performed by different functional modules according to needs, that is, the internal structure of the terminal is divided into different functional modules to complete all or part of the functions described above. In addition, the pinch-out line determining device provided in the above embodiment and the pinch-out line determining method embodiment belong to the same concept, and detailed implementation processes thereof are shown in the method embodiment, and are not repeated here.
Fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application. The terminal 900 may be a portable mobile terminal such as: a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III, motion picture expert compression standard audio plane 3), an MP4 (Moving Picture Experts Group Audio Layer IV, motion picture expert compression standard audio plane 4) player, a notebook computer, or a desktop computer. Terminal 900 may also be referred to by other names of user devices, portable terminals, laptop terminals, desktop terminals, etc.
In general, the terminal 900 includes: a processor 901 and a memory 902.
Processor 901 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 901 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 901 may also include a main processor and a coprocessor, the main processor being a processor for processing data in an awake state, also referred to as a CPU (Central Processing Unit ); a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 901 may integrate a GPU (Graphics Processing Unit, image processor) for taking care of rendering and drawing of content that the display screen needs to display. In some embodiments, the processor 901 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
The memory 902 may include one or more computer-readable storage media, which may be non-transitory. The memory 902 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 902 is used to store at least one program code for execution by processor 901 to implement the borehole trajectory matching degree method provided by the method embodiments of the present application.
In some embodiments, the terminal 900 may further optionally include: a peripheral interface 903, and at least one peripheral. The processor 901, memory 902, and peripheral interface 903 may be connected by a bus or signal line. The individual peripheral devices may be connected to the peripheral device interface 903 via buses, signal lines, or circuit boards. Specifically, the peripheral device includes: at least one of radio frequency circuitry 904, a display 905, a camera assembly 906, audio circuitry 907, a positioning assembly 908, and a power source 909.
The peripheral interface 903 may be used to connect at least one peripheral device associated with an I/O (Input/Output) to the processor 901 and the memory 902. In some embodiments, the processor 901, memory 902, and peripheral interface 903 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 901, the memory 902, and the peripheral interface 903 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 904 is configured to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 904 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 904 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 904 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuit 904 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area networks, intranets, generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuit 904 may also include NFC (Near Field Communication ) related circuits, which the present application is not limited to.
The display 905 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display 905 is a touch display, the display 905 also has the ability to capture touch signals at or above the surface of the display 905. The touch signal may be input as a control signal to the processor 901 for processing. At this time, the display 905 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 905 may be one and disposed on the front panel of the terminal 900; in other embodiments, the display 905 may be at least two, respectively disposed on different surfaces of the terminal 900 or in a folded design; in other embodiments, the display 905 may be a flexible display disposed on a curved surface or a folded surface of the terminal 900. Even more, the display 905 may be arranged in an irregular pattern other than rectangular, i.e., a shaped screen. The display 905 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.
The camera assembly 906 is used to capture images or video. Optionally, the camera assembly 906 includes a front camera and a rear camera. Typically, the front camera is disposed on the front panel of the terminal and the rear camera is disposed on the rear surface of the terminal. In some embodiments, the at least two rear cameras are any one of a main camera, a depth camera, a wide-angle camera and a tele camera, so as to realize that the main camera and the depth camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize a panoramic shooting and Virtual Reality (VR) shooting function or other fusion shooting functions. In some embodiments, camera assembly 906 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.
The audio circuit 907 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 901 for processing, or inputting the electric signals to the radio frequency circuit 904 for voice communication. For purposes of stereo acquisition or noise reduction, the microphone may be plural and disposed at different portions of the terminal 900. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 901 or the radio frequency circuit 904 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, the audio circuit 907 may also include a headphone jack.
The location component 908 is used to locate the current geographic location of the terminal 900 to enable navigation or LBS (Location Based Service, location-based services). The positioning component 908 may be a positioning component based on the United states GPS (Global Positioning System ), the Beidou system of China, or the Galileo system of Russia.
The power supply 909 is used to supply power to the various components in the terminal 900. The power supply 909 may be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power source 909 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, terminal 900 can further include one or more sensors 910. The one or more sensors 910 include, but are not limited to: acceleration sensor 911, gyroscope sensor 912, pressure sensor 913, fingerprint sensor 914, optical sensor 915, and proximity sensor 916.
The acceleration sensor 911 can detect the magnitudes of accelerations on three coordinate axes of the coordinate system established with the terminal 900. For example, the acceleration sensor 911 may be used to detect components of gravitational acceleration in three coordinate axes. The processor 901 may control the display 905 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal acquired by the acceleration sensor 911. The acceleration sensor 911 may also be used for the acquisition of motion data of a game or a user.
The gyro sensor 912 may detect a body direction and a rotation angle of the terminal 900, and the gyro sensor 912 may collect a 3D motion of the user on the terminal 900 in cooperation with the acceleration sensor 911. The processor 901 may implement the following functions according to the data collected by the gyro sensor 912: motion sensing (e.g., changing UI according to a tilting operation by a user), image stabilization at shooting, game control, and inertial navigation.
The pressure sensor 913 may be provided at a side frame of the terminal 900 and/or at a lower layer of the display 905. When the pressure sensor 913 is provided at a side frame of the terminal 900, a grip signal of the user to the terminal 900 may be detected, and the processor 901 performs left-right hand recognition or shortcut operation according to the grip signal collected by the pressure sensor 913. When the pressure sensor 913 is provided at the lower layer of the display 905, the processor 901 performs control of the operability control on the UI interface according to the pressure operation of the user on the display 905. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.
The fingerprint sensor 914 is used for collecting the fingerprint of the user, and the processor 901 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 914, or the fingerprint sensor 914 identifies the identity of the user according to the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, the processor 901 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying for and changing settings, etc. The fingerprint sensor 914 may be provided on the front, back, or side of the terminal 900. When a physical key or a vendor Logo is provided on the terminal 900, the fingerprint sensor 914 may be integrated with the physical key or the vendor Logo.
The optical sensor 915 is used to collect the intensity of ambient light. In one embodiment, the processor 901 may control the display brightness of the display panel 905 based on the intensity of ambient light collected by the optical sensor 915. Specifically, when the ambient light intensity is high, the display luminance of the display screen 905 is turned up; when the ambient light intensity is low, the display luminance of the display panel 905 is turned down. In another embodiment, the processor 901 may also dynamically adjust the shooting parameters of the camera assembly 906 based on the ambient light intensity collected by the optical sensor 915.
A proximity sensor 916, also referred to as a distance sensor, is typically provided on the front panel of the terminal 900. Proximity sensor 916 is used to collect the distance between the user and the front of terminal 900. In one embodiment, when the proximity sensor 916 detects that the distance between the user and the front face of the terminal 900 gradually decreases, the processor 901 controls the display 905 to switch from the bright screen state to the off screen state; when the proximity sensor 916 detects that the distance between the user and the front surface of the terminal 900 gradually increases, the processor 901 controls the display 905 to switch from the off-screen state to the on-screen state.
Those skilled in the art will appreciate that the structure shown in fig. 9 is not limiting and that more or fewer components than shown may be included or certain components may be combined or a different arrangement of components may be employed.
The embodiment of the present application also provides a computer-readable storage medium having at least one program code stored therein, the at least one program code being loaded and executed by a processor to implement the operations performed in the pinch-out line determination method of the above embodiment.
The embodiments of the present application also provide a computer program product or a computer program comprising computer program code stored in a computer readable storage medium, the computer program code being read from the computer readable storage medium by a processor of a terminal, the computer program code being executed by the processor such that the terminal implements the operations performed in the pinch-out line determination method as described in the above aspect.
The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (11)
1. A pinch-out line determination method, characterized in that the method comprises:
Acquiring a plurality of seismic profiles of a target stratum, wherein the target stratum comprises a surrounding stratum and a paste salt layer;
under the condition that the seismic data frequency of the target stratum is determined to be larger than a preset frequency, for each seismic profile in the plurality of seismic profiles, determining a first sharp vanishing point of the seismic profile according to the energy of the target stratum, wherein the first sharp vanishing point is a point with abrupt change of the energy in the seismic profile;
determining a second sharp vanishing point according to the fault line of the target stratum, wherein the second sharp vanishing point is a point with abrupt change in depth under the condition of the same energy;
determining a target point of the seismic profile from the first point and the second point;
and connecting the target sharp vanishing points of the plurality of seismic section views, and determining the pinch-out line of the paste salt layer.
2. The method according to claim 1, wherein the method further comprises:
determining, for each of the plurality of seismic profiles, the second point vanishing point according to a fault line of the target formation, if it is determined that the seismic data frequency of the target formation is not greater than the preset frequency;
And connecting second pinch-out points of the plurality of seismic sectional views, and determining pinch-out lines of the paste salt layer.
3. The method according to claim 1, wherein the method further comprises:
acquiring seismic data of the target stratum;
and determining the frequency corresponding to the maximum amplitude as the seismic data frequency based on the seismic data.
4. The method of claim 1, wherein the determining the first point of extinction of the seismic profile from the energy of the target formation comprises:
in the seismic profile, acquiring an energy difference value of any two adjacent first target points at the same depth, wherein the interval between the any two adjacent first target points is a first preset width;
and under the condition that the determined energy difference value is larger than the target energy difference value, determining a first target point with smaller energy in two adjacent first target points corresponding to the energy difference value larger than the target energy difference value as the first point vanishing point.
5. The method of claim 1 or 2, wherein the determining a second point of extinction from a fault line of the target formation comprises:
and determining an intersection point of a fault line of the target stratum and a stratum line of the target stratum as the second point of extinction in the seismic profile.
6. The method according to claim 1, wherein the method further comprises:
in the seismic profile, acquiring depth difference values of any two adjacent second target points under the same energy, wherein the interval between the two adjacent second target points is a second preset width;
and connecting a second target point corresponding to the depth difference value larger than the target depth difference value under the condition that the determined depth difference value is larger than the target depth difference value, and determining a line obtained by connection as the fault line.
7. The method of claim 6, wherein the method further comprises:
in the seismic section, if a plurality of fault lines are determined, a fault line located at a first position is determined as a fault line for determining the second point vanishing point.
8. The method of claim 1, wherein said determining a target tip vanishing point for the seismic profile from the first tip vanishing point and the second tip vanishing point comprises:
and determining a position point corresponding to the average coordinate of the coordinates of the first point vanishing point and the coordinates of the second point vanishing point as the target point vanishing point.
9. An pinch-out line determination device, characterized in that the device comprises:
The system comprises a profile acquisition module, a profile analysis module and a profile analysis module, wherein the profile acquisition module is used for acquiring a plurality of seismic profiles of a target stratum, and the target stratum comprises a surrounding stratum and a paste salt layer;
the sharp vanishing point determining module is used for determining a first sharp vanishing point of each of the plurality of seismic section views according to the energy of the target stratum under the condition that the seismic data frequency of the target stratum is determined to be larger than a preset frequency, wherein the first sharp vanishing point is a point with abrupt change of the energy in the seismic section views;
the pinch-out point determining module is used for determining a second pinch-out point according to the fault line of the target stratum, wherein the second pinch-out point is a point with abrupt change in depth under the condition of the same energy;
the pinch-out point determining module is used for determining a target pinch-out point of the seismic section according to the first pinch-out point and the second pinch-out point;
and the pinch-out line determining module is used for connecting the target pinch-out points of the plurality of seismic section views and determining the pinch-out line of the paste salt layer.
10. A terminal comprising a processor and a memory, wherein the memory has stored therein at least one program code that is loaded and executed by the processor to implement the operations performed in the pinch-out line determination method of any of claims 1-8.
11. A computer-readable storage medium, characterized in that at least one program code is stored in the computer-readable storage medium, which is loaded and executed by a processor to implement the operations performed in the pinch-out line determination method as claimed in any one of claims 1 to 8.
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| CN113805227A (en) * | 2021-09-10 | 2021-12-17 | 中国石油大学(华东) | Hidden stratum pinch-out line identification method |
| CN115793073B (en) * | 2023-02-14 | 2023-04-11 | 广东石油化工学院 | Energy prediction method and system based on tomogram |
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