CN107085650B - Three-dimensional seismic project evaluation method and device - Google Patents
Three-dimensional seismic project evaluation method and device Download PDFInfo
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Abstract
The invention provides a three-dimensional seismic project evaluation method and a device, wherein the method comprises the steps of analyzing the discoverable resource strategic value of a three-dimensional seismic project to obtain a discoverable resource strategic value index; analyzing the feasibility of the technical scheme of the three-dimensional seismic project to obtain a feasibility index of the technical scheme; drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in a three-dimensional seismic project evaluation classification chart; and evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map. The method is beneficial to standardizing the evaluation flow of the three-dimensional earthquake project, unifying the evaluation standard of the three-dimensional earthquake project, reducing the artificial subjective randomness, improving the scientificity of exploration and deployment, providing a basis for the three-dimensional earthquake deployment direction and sequence of the oil company, effectively reducing the cost and improving the exploration benefit.
Description
Technical Field
The invention relates to the technical field of oil-gas exploration, in particular to a three-dimensional seismic project evaluation method and device.
Background
The seismic exploration technology is one of the main regional physical exploration technical methods for searching petroleum and natural gas at the present stage, the data acquired by the method can more accurately reflect the related information such as the underground reservoir structure, the rock physical properties and the like, and the well drilling position and the well drilling depth can be more accurately determined, so that the breakthrough discovery of oil and gas or the stable increase of reserves can be realized. Therefore, the seismic exploration technology is paid attention by each large petroleum company, the investment for the technology is gradually increased and accounts for nearly 30% of the annual exploration investment of each petroleum company, but with the continuous rise of seismic exploration cost, especially three-dimensional seismic exploration cost in recent years, how to perform the optimal evaluation and optimization of a plurality of three-dimensional seismic exploration projects under the condition of limited fund is urgent.
The seismic exploration is divided into general survey, detailed survey and fine survey, corresponding task targets are different in different exploration stages (oil and gas seismic exploration technical specification DZ/T0180-1997), and the preferable methods and parameters for evaluating the seismic exploration are also different. The evaluation of domestic three-dimensional earthquake projects is preferably carried out by manually scoring and queuing experts from 4 aspects of deployment strategic significance, oil and gas resource conditions, scheme rationality, technical feasibility and the like according to whether production is needed or not, whether a scheme is reasonable or not, whether the technology is feasible or not and whether implementation is effective or not.
Disclosure of Invention
The invention provides a three-dimensional seismic project evaluation method and device, which are used for solving the problems that a corresponding method in the prior art has no standard, artificial subjective randomness is strong, and judgment scales of different judging personnel are difficult to unify.
The invention provides a three-dimensional seismic project evaluation method on one hand, which comprises the following steps:
analyzing the discoverable resource strategic value of the three-dimensional earthquake project to obtain a discoverable resource strategic value index;
analyzing the feasibility of the technical scheme of the three-dimensional seismic project to obtain a feasibility index of the technical scheme;
drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in a three-dimensional seismic project evaluation classification chart;
and evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map.
Further, the method for analyzing the discoverable resource strategic value of the three-dimensional seismic project to obtain the discoverable resource strategic value index specifically comprises the following steps:
according to the formula
Calculating to obtain a discoverable resource strategic value index,
wherein, PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas;
Qabundance of discoverable resourcesTaking values according to the standards of each region;
Panalog zone exploration well success rateBetween 20% and 40%;
Qabundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions;
Qstrategic significance∈(0，1)。
Further, analyzing the feasibility of the technical scheme of the three-dimensional seismic project to obtain a feasibility index of the technical scheme, specifically comprising:
according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnAnd E represents the exploration trap type.
Further, evaluating the three-dimensional seismic item corresponding to the point according to the position of the point in the three-dimensional seismic item evaluation classification map, specifically comprising,
dividing a three-dimensional seismic item evaluation classification map into nine parts, wherein the three-dimensional seismic item evaluation classification map is a square area with the side length of 1, the left lower vertex of the square is taken as a coordinate origin, two sides of the square forming the left lower vertex respectively fall in the positive direction of an x axis and the positive direction of a y axis, a straight line x is 0.3, x is 0.6, y is 0.3, and y is 0.6, and the square area is divided into nine parts;
and judging that the point is positioned in the position in the three-dimensional seismic item evaluation classification map so as to evaluate the three-dimensional seismic item corresponding to the point, wherein when the point is positioned in an area enclosed by a straight line x being 0.6, x being 1, y being 0.6 and y being 1, the three-dimensional seismic item evaluation is optimal.
And further, evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification chart, and when the same part in the three-dimensional seismic item evaluation classification chart has a plurality of points, carrying out weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to the point to obtain a processing result, wherein the three-dimensional seismic item corresponding to the point with the large processing result value is superior to the three-dimensional seismic item corresponding to the point with the small processing result value.
Further according to the formula
wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRAnd the highest resolution required by the target layer of the three-dimensional seismic project to be implemented at the time is shown.
Further according to the formula
wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRAnd the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented is shown.
Another aspect of the present invention provides a three-dimensional seismic item evaluation apparatus, including:
the discoverable resource strategic value index obtaining module is used for analyzing the discoverable resource strategic value of the three-dimensional earthquake project to obtain the discoverable resource strategic value index;
the technical scheme feasibility index acquisition module is used for analyzing the technical scheme feasibility of the three-dimensional seismic project to acquire a technical scheme feasibility index;
the point drawing module is used for drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in the three-dimensional seismic item evaluation classification chart;
and the evaluation module is used for evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification chart.
Further, the evaluation module specifically includes:
the classification submodule is used for dividing the three-dimensional seismic item evaluation classification map into nine parts, wherein the three-dimensional seismic item evaluation classification map is a square area with the side length of 1, a left lower intersection point of the square is used as a coordinate origin, two sides of the square forming the intersection point respectively fall in the positive direction of an x axis and the positive direction of a y axis, x is 0.3, x is 0.6, y is 0.3, and y is 0.6 to divide the square area into nine parts;
and the evaluation sub-module is used for evaluating the three-dimensional seismic item corresponding to the point according to the position of the point in the three-dimensional seismic item evaluation classification map, wherein when the point is positioned in an area enclosed by x being 0.6, x being 1, y being 0.6, and y being 1, the three-dimensional seismic item evaluation is optimal.
And the sorting submodule is used for carrying out weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to a point when the same part in the three-dimensional seismic item evaluation classification chart has the plurality of points to obtain a processing result, wherein the three-dimensional seismic item corresponding to the point with the large processing result value is superior to the three-dimensional seismic item corresponding to the point with the small processing result value.
Further, a resource strategic value index acquisition module can be found, particularly for,
according to the formula
Calculating to obtain a discoverable resource strategic value index,
wherein, PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas; qAbundance of discoverable resourcesTaking values according to the standards of each region; pAnalog zone exploration well success rateBetween 20% and 40%; qAbundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions; qStrategic significance∈(0，1)；
The feasibility index acquisition module of the technical scheme is specifically used for,
according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnRepresenting a signal-to-noise ratio demand index of the three-dimensional seismic project, and E representing an exploration trap type;
as described above
Wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRRepresenting the highest resolution required by the target layer of the three-dimensional seismic project to be implemented;
as described above
Acquiring a signal-to-noise ratio demand index of a three-dimensional seismic project; wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRAnd the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented is shown.
According to the three-dimensional seismic project evaluation method provided by the invention, the discoverable resource strategic value index and the technical scheme feasibility index of the three-dimensional seismic project are obtained by analyzing the discoverable resource strategic value and the technical scheme feasibility index, so that points consisting of the discoverable resource strategic value index as an abscissa and the technical scheme feasibility index as an ordinate are drawn in the three-dimensional seismic project evaluation classification diagram, and finally, the three-dimensional seismic project corresponding to the points is evaluated according to the positions of the points in the three-dimensional seismic project evaluation classification diagram. The method is beneficial to standardizing the evaluation flow of the three-dimensional earthquake project, unifying the evaluation standard of the three-dimensional earthquake project, reducing the artificial subjective randomness, improving the scientificity of exploration and deployment, providing a basis for the three-dimensional earthquake deployment direction and sequence of the oil company, effectively reducing the cost and improving the exploration benefit.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 is a schematic flow chart of a three-dimensional seismic project evaluation method according to a first embodiment of the invention;
FIG. 2 is a schematic flow chart of a three-dimensional seismic item evaluation method according to a second embodiment of the invention;
FIG. 3 is an exploration degree assignment diagram corresponding to a three-dimensional seismic work area hydrocarbon discovery probability;
FIG. 4 is a three-dimensional seismic item evaluation classification chart according to a second embodiment of the invention;
FIG. 5 is a schematic structural diagram of a three-dimensional seismic item evaluation device according to a third embodiment of the invention;
fig. 6 is a schematic structural diagram of a three-dimensional seismic-item evaluation apparatus according to a fourth embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Example one
Fig. 1 is a schematic flow chart of a three-dimensional seismic project evaluation method according to a first embodiment of the present invention, and as shown in fig. 1, the present embodiment provides a three-dimensional seismic project evaluation method, including:
Specifically, the resource strategic value can be found to be a parameter comprehensively reflecting the oil-gas geological conditions, the resource scale and the exploration strategic significance of the earthquake deployment work area. The discoverable resource strategic value of the three-dimensional seismic project is analyzed, for example, the influences of the oil and gas discovery probability of a working area of the three-dimensional seismic project, the exploratory well success rate of an analog area, the resource abundance of the analog area, the discoverable resource strategic value and the like on the discoverable resource strategic value can be considered, and the respective influences are quantified, so that a discoverable resource strategic value index is obtained, and the discoverable resource strategic value index is a value which can represent the discoverable resource strategic value and is a decimal number.
And 102, analyzing the feasibility of the technical scheme of the three-dimensional seismic project to obtain a feasibility index of the technical scheme.
Specifically, the feasibility of the technical scheme is to prejudge the reliability and rationality of the geological task which can be completed by the deployed earthquake, and the feasibility parameters of the technical scheme are used for representing the reliability and rationality. The feasibility of the technical scheme of the three-dimensional seismic project is analyzed, for example, the influences of the surface condition, the underground geological condition, the resolution requirement index of the three-dimensional seismic project, the signal-to-noise ratio requirement index of the three-dimensional seismic project, the exploration trap type and the like on the feasibility of the technical scheme can be considered, and the influences of the influences on the feasibility of the technical scheme can be quantized, so that the feasibility index of the technical scheme is obtained, and the feasibility index of the technical scheme is a quantized value which can represent the feasibility of the technical scheme and is a decimal number.
And 103, drawing points which are composed of the index of the strategic value of the discoverable resources as the abscissa and the index of feasibility of the technical scheme as the ordinate in the three-dimensional seismic project evaluation classification chart.
Specifically, a three-dimensional seismic item evaluation classification map is placed in a rectangular coordinate axis, wherein the three-dimensional seismic item evaluation classification map is a rectangular area, a left lower vertex of the rectangle is taken as a coordinate origin, two sides forming the left lower vertex are respectively in an x-axis positive direction and a y-axis positive direction, and after a discoverable resource strategic value index and a technical scheme feasibility index are obtained, points formed by the discoverable resource strategic value index serving as a horizontal coordinate and the technical scheme feasibility index serving as a vertical coordinate are drawn in the three-dimensional seismic item evaluation classification map.
And 104, evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification chart.
Specifically, after points corresponding to the three-dimensional seismic items are drawn in the three-dimensional seismic item evaluation classification chart, the three-dimensional seismic items corresponding to the points are evaluated according to the positions of the points in the three-dimensional seismic item evaluation classification chart. The three-dimensional seismic project evaluation classification chart is divided into a plurality of parts, and the three-dimensional seismic projects corresponding to the points falling on different parts have different preference orders, so that the quantitative analysis and evaluation of the three-dimensional seismic projects are realized.
The three-dimensional seismic project evaluation method provided by this embodiment obtains the discoverable resource strategic value index and the technical scheme feasibility index by analyzing the discoverable resource strategic value and the technical scheme feasibility of the three-dimensional seismic project, so as to draw a point composed of the discoverable resource strategic value index as an abscissa and the technical scheme feasibility index as an ordinate in the three-dimensional seismic project evaluation classification diagram, and finally evaluate the corresponding three-dimensional seismic project according to the position of the point in the three-dimensional seismic project evaluation classification diagram. The method is beneficial to standardizing the evaluation flow of the three-dimensional seismic project, unifying the evaluation standard of the three-dimensional seismic project, reducing the artificial subjective randomness, improving the scientificity of exploration and deployment, providing a basis for the three-dimensional seismic deployment direction and sequence of a petroleum company, optimizing the exploration investment, effectively reducing the cost and improving the exploration benefit.
Example two
This embodiment is a supplementary explanation based on the above embodiment.
Fig. 2 is a schematic flow chart of a three-dimensional seismic item evaluation method according to a second embodiment of the present invention, and as shown in fig. 2, the present embodiment provides a three-dimensional seismic item evaluation method, including:
Further according to the formula
Calculating to obtain a discoverable resource strategic value index, wherein PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas; qAbundance of discoverable resourcesTaking values according to the standards of each region; pAnalog zone exploration well success rateBetween 20% and 40%; qAbundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions; qStrategic significance∈(0，1)。
Specifically, the hydrocarbon discovery probability of the three-dimensional seismic project work area is the product of the work area trap discovery probability, the storage probability, the reservoir probability and the hydrocarbon charge probability, namely PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling withIn the formula, the value range of each probability value is between 0 and 1, and each evaluation factor (the work area trap discovery probability, the storage probability, the reservoir probability and the oil gas filling probability) explains the reliability of the result according to the data quality, the quantity, the evidence source (direct or indirect) and the oil gas filling probability. The three-dimensional seismic work area oil and gas discovery probability corresponding exploration degree assignment graph shown in fig. 3 corresponds to different exploration degrees, the exploration degrees are divided into three types, namely low, medium and high, the risk degree is divided into three intervals, and the smaller the probability value is, the larger the risk is, the larger the degree of impossibility is. And (3) respectively assigning evaluation factors in the three intervals, wherein the evaluation factors such as filling or reservoir are assigned when the exploration degree is low, the maximum evaluation factor cannot exceed 0.7, and the minimum evaluation factor cannot be lower than 0.3. The finally calculated oil gas discovery probability is verified with geologists, and generally, the extremely low risk calculation value interval is 0.5-0.99, the low risk is 0.25-0.5, the medium risk is 0.125-0.25, the high risk is 0.0625-0.125, and the extremely high risk is 0.01-0.0625.
PAnalog zone exploration well success ratePreferably 30%. QAbundance of resources in the analogy regionAnd taking values according to the normalized resource abundance value table of different area scale areas, and particularly taking values according to the table 1. QStrategic significanceE (0, 1), and the value can be specifically selected according to the table 2.
TABLE 1
TABLE 2
And 102, analyzing the feasibility of the technical scheme of the three-dimensional seismic project to obtain a feasibility index of the technical scheme.
Further according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnAnd E represents the exploration trap type.
The exploration trap type (E) is subjected to classified assignment, and traps can be constructed according to a single structure; complex structure trap, simple stratum lithologic trap (larger thickness and large scale); lithologic trap of complex stratum (thinner thickness and small scale); special lithologic formations and complex formations traps (volcanoes, sub-salt, magma invasion, etc.); the types of fractures, unconventional shale, etc. are divided into five intervals, with different values chosen between 0-1 for the different intervals.
The three-dimensional seismic project resolution requirement index (R) is an index which is predicted to meet geological requirements and achieve geological requirement resolution by the design of the three-dimensional seismic project.
Further, in the above-mentioned case,
acquiring a resolution requirement index of a three-dimensional seismic project;
wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRRepresenting the three-dimensional seismic project object to be implementedThe highest resolution required for the layer.
Further, in the above-mentioned case,
acquiring a signal-to-noise ratio demand index of a three-dimensional seismic project;
wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRAnd the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented is shown.
And 103, drawing points which are composed of the index of the strategic value of the discoverable resources as the abscissa and the index of feasibility of the technical scheme as the ordinate in the three-dimensional seismic project evaluation classification chart.
The steps can be specifically referred to the description of the corresponding steps in the first embodiment.
And 104, evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification chart.
Further, step 104 includes: step 1041, dividing the three-dimensional seismic item evaluation classification map into nine parts, where the three-dimensional seismic item evaluation classification map is a square area with a side length of 1, taking a lower left vertex of the square as a coordinate origin, and two sides of the square forming the lower left vertex respectively fall in the positive x-axis direction and the positive y-axis direction, where a straight line x is 0.3, x is 0.6, y is 0.3, and y is 0.6, and the square area is divided into nine parts.
Specifically, the three-dimensional seismic item evaluation classification map is a square area with a side length of 1, a lower left vertex of the square is used as a coordinate origin, two sides of the square forming the lower left vertex respectively fall in a positive x-axis direction and a positive y-axis direction, a straight line x is 0.3, x is 0.6, y is 0.3, and y is 0.6, so that the square area is divided into nine parts, wherein a sixth area, an eighth area, a ninth area, a third area, a fourth area, a seventh area, a first area, a second area and a fifth area are respectively arranged from top to bottom and from left to right. See in particular the three-dimensional seismic project evaluation classification chart of fig. 4, wherein the abscissa represents the discoverable resource strategic value index; the ordinate represents the technical solution feasibility index. The three-dimensional seismic items corresponding to the points falling in the first zone are superior to the three-dimensional seismic items corresponding to the points falling in the second zone, the three-dimensional seismic items corresponding to the points falling in the second zone are superior to the three-dimensional seismic items corresponding to the points falling in the third zone, and so on.
The points falling in the first area, the second area and the third area correspond to three-dimensional seismic projects which have great exploration significance, resources, feasible technology and deployment; points falling in the fourth area, the fifth area and the sixth area correspond to points which have certain resource scale or exploration significance, but the technical scheme has risks; or the technical scheme is feasible, but the resource scale is small or the exploration significance is small, and a three-dimensional seismic project which is deployed after the reinforcement and demonstration of the exploration strategy is required to be combined; points falling within the seventh, eighth, and ninth zones correspond to three-dimensional seismic items that have little potential or greater technical risk that are not recommended for deployment.
And 1042, judging that the point is located at a position in the three-dimensional seismic item evaluation classification map so as to evaluate the corresponding three-dimensional seismic item, wherein the three-dimensional seismic item evaluation is optimal when the point is located in an area surrounded by a straight line x being 0.6, x being 1, y being 0.6, and y being 1.
Specifically, in the three-dimensional seismic item evaluation classification chart, an area surrounded by a straight line x being 0.6, x being 1, y being 0.6, and y being 1 is the first area in step 1041, and when the point falls in the first area, the three-dimensional seismic item corresponding to the point is evaluated as the optimal, that is, the exploration meaning is the greatest.
Further, the step 104 includes a step 1043 of, when there are multiple points in the same portion of the three-dimensional seismic item evaluation classification map, performing weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to the points to obtain a processing result, where a three-dimensional seismic item corresponding to a point with a large processing result value is superior to a three-dimensional seismic item corresponding to a point with a small processing result value.
Specifically, when a plurality of three-dimensional seismic items fall on the same part of the three-dimensional seismic item evaluation classification map, that is, fall on the same area of the three-dimensional seismic item evaluation classification map, the plurality of three-dimensional seismic items need to be evaluated, at this time, the strategic resource value index and the technical scheme feasibility index corresponding to each point are respectively subjected to weighted average processing to obtain a processing result, and the three-dimensional seismic item corresponding to the point with the large processing result value is superior to the three-dimensional seismic item corresponding to the point with the small processing result value.
The following examples are given for illustrative purposes.
The method is applied to 27 three-dimensional seismic item evaluations in 2015 of a certain oil company, and the 27 three-dimensional seismic items are respectively mapped in a three-dimensional seismic item evaluation classification chart so as to be evaluated preferably, wherein 19 three-dimensional seismic items of 3, 4, 6, 7, 9, 10, 13, 14, 17, 18, 20, 22, 1, 2, 12, 23, 24, 26 and 27 are deployable seismic items, the 19 three-dimensional seismic items are sorted by using the weighted average of the technical scheme feasibility index and the discoverable resource strategic value index of each three-dimensional seismic item as quantitative indexes, and finally the sorting order of the 19 three-dimensional seismic items is obtained as follows: 10. 7, 17, 20, 22, 19, 6, 18, 4, 9, 13, 14, 3, 23, 12, 26, 1, 2, 27, 24. Through the sorting and the specific exploration investment of the oil company, the three-dimensional seismic items with the top sorting can be preferentially selected for exploration, so that the risk is reduced to the maximum extent, and the exploration benefit is improved.
The three-dimensional seismic project evaluation method provided by this embodiment obtains the discoverable resource strategic value index and the technical scheme feasibility index by analyzing the discoverable resource strategic value and the technical scheme feasibility of the three-dimensional seismic project, so as to draw a point composed of the discoverable resource strategic value index as an abscissa and the technical scheme feasibility index as an ordinate in the three-dimensional seismic project evaluation classification diagram, and finally divide the three-dimensional seismic project evaluation classification diagram, and determine the position of the point in the three-dimensional seismic project evaluation classification diagram, so as to evaluate the corresponding three-dimensional seismic project. The method is beneficial to standardizing the evaluation flow of the three-dimensional seismic project, unifying the evaluation standard of the three-dimensional seismic project, reducing the artificial subjective randomness, improving the scientificity of exploration and deployment, providing a basis for the three-dimensional seismic deployment direction and sequence of a petroleum company, optimizing the exploration investment, effectively reducing the cost and improving the exploration benefit.
EXAMPLE III
The present embodiment is an apparatus embodiment for performing the methods of the above embodiments.
Fig. 5 is a schematic structural diagram of a three-dimensional seismic item evaluation device according to a third embodiment of the present invention, and as shown in fig. 5, the present embodiment provides a three-dimensional seismic item evaluation device, including: the resource strategic value index acquisition module 201, the technical scheme feasibility index acquisition module 202, the drawing point module 203 and the evaluation module 204 can be found.
A discoverable resource strategic value index obtaining module 201, configured to analyze the discoverable resource strategic value of the three-dimensional seismic project to obtain a discoverable resource strategic value index;
the technical scheme feasibility index obtaining module 202 is used for analyzing the technical scheme feasibility of the three-dimensional seismic project to obtain a technical scheme feasibility index;
the point drawing module 203 is used for drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in the three-dimensional seismic item evaluation classification chart;
and the evaluation module 204 is configured to evaluate the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map.
The present embodiment is a device embodiment corresponding to the method embodiment, and specific reference may be made to the corresponding description in the first embodiment, which is not described herein again.
In the three-dimensional seismic project evaluation device provided by this embodiment, the discoverable resource strategic value of the three-dimensional seismic project and the technical scheme feasibility index of the three-dimensional seismic project are analyzed by the discoverable resource strategic value index acquisition module 201 and the technical scheme feasibility index acquisition module 202 to acquire the discoverable resource strategic value index and the technical scheme feasibility index, so that the point drawing module 203 draws a point composed of the discoverable resource strategic value index as an abscissa and the technical scheme feasibility index as an ordinate in the three-dimensional seismic project evaluation classification diagram, and finally, the evaluation module 204 evaluates the corresponding three-dimensional seismic project according to the position of the point in the three-dimensional seismic project evaluation classification diagram. The method is beneficial to standardizing the evaluation flow of the three-dimensional seismic project, unifying the evaluation standard of the three-dimensional seismic project, reducing the artificial subjective randomness, improving the scientificity of exploration and deployment, providing a basis for the three-dimensional seismic deployment direction and sequence of a petroleum company, optimizing the exploration investment, effectively reducing the cost and improving the exploration benefit.
Example four
This embodiment is a supplementary description performed on the basis of the third embodiment, and is used to execute the method in the second embodiment.
Fig. 6 is a schematic structural diagram of a three-dimensional seismic item evaluation device according to a fourth embodiment of the present invention, and as shown in fig. 6, the present embodiment provides a three-dimensional seismic item evaluation device, including: the resource strategic value index acquisition module 201, the technical scheme feasibility index acquisition module 202, the drawing point module 203 and the evaluation module 204 can be found.
Further, the evaluation module 204 specifically includes: a classification sub-module 2041, an evaluation sub-module 2042, and an ordering sub-module 2043.
The classification submodule 2041 is configured to divide the three-dimensional seismic item evaluation classification map into nine parts, where the three-dimensional seismic item evaluation classification map is a square area with a side length of 1, a left lower intersection point of the square is used as a coordinate origin, two sides of the square forming the intersection point respectively fall in an x-axis positive direction and a y-axis positive direction, x is 0.3, x is 0.6, y is 0.3, and y is 0.6, and the square area is divided into nine parts;
and the evaluation sub-module 2042 is configured to evaluate the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map, where the three-dimensional seismic item evaluation is optimal when the point is located in an area surrounded by x being 0.6, x being 1, y being 0.6, and y being 1.
The sorting submodule 2043 is configured to, when there are multiple points in the same portion of the three-dimensional seismic item evaluation classification map, perform weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to the points to obtain a processing result, where a three-dimensional seismic item corresponding to a point with a large processing result value is superior to a three-dimensional seismic item corresponding to a point with a small processing result value.
Further, the resource strategic value index acquisition module 201 can be found, in particular,
according to the formula
Calculating to obtain a discoverable resource strategic value index,
wherein, PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas;
Qabundance of discoverable resourcesTaking values according to the standards of each region;
Panalog zone exploration well success rateBetween 20% and 40%;
Qabundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions;
Qstrategic significance∈(0，1)；
The technical solution feasibility index obtaining module 202 is specifically configured to,
according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnRepresenting a signal-to-noise ratio demand index of the three-dimensional seismic project, and E representing an exploration trap type;
as described above
Wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRRepresenting the highest resolution required by the target layer of the three-dimensional seismic project to be implemented;
as described above
Acquiring a signal-to-noise ratio demand index of a three-dimensional seismic project; wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRAnd the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented is shown.
The present embodiment is a device embodiment corresponding to the method embodiment, and specific reference may be made to the corresponding description in the second embodiment, which is not described herein again.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A method for three-dimensional seismic item evaluation, comprising:
analyzing the discoverable resource strategic value of the three-dimensional seismic project according to the oil and gas discovery probability of the work area of the three-dimensional seismic project, the exploration success rate of the analog area, the resource abundance of the analog area and the discoverable resource abundance to obtain the discoverable resource strategic value index, which comprises the following steps:
according to the formula
Calculate and obtain the possibleThe value index of the strategic value of the existing resources,
wherein, PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas;
Qabundance of discoverable resourcesTaking values according to the standards of each region;
Panalog zone exploration well success rateBetween 20% and 40%;
Qabundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions;
Qstrategic significance∈(0，1)；
Analyzing the feasibility of the technical scheme of the three-dimensional seismic project according to the surface condition, the underground geological condition, the three-dimensional seismic project resolution ratio demand index, the three-dimensional seismic project signal-to-noise ratio demand index and the exploration trap type to obtain the feasibility index of the technical scheme, wherein the feasibility index of the technical scheme comprises the following steps:
according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnRepresenting a signal-to-noise ratio demand index of the three-dimensional seismic project, and E representing an exploration trap type;
according to the formula
Acquiring a resolution requirement index of a three-dimensional seismic project; wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRRepresenting the highest resolution required by the target layer of the three-dimensional seismic project to be implemented;
according to the formula
Acquiring a signal-to-noise ratio demand index of a three-dimensional seismic project; wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRRepresenting the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented;
drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in a three-dimensional seismic project evaluation classification chart;
and evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map.
2. The three-dimensional seismic item evaluation method of claim 1, wherein evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification map, specifically comprising,
dividing a three-dimensional seismic item evaluation classification map into nine parts, wherein the three-dimensional seismic item evaluation classification map is a square area with the side length of 1, the left lower vertex of the square is taken as a coordinate origin, two sides of the square forming the left lower vertex respectively fall in the positive direction of an x axis and the positive direction of a y axis, a straight line x is 0.3, x is 0.6, y is 0.3, and y is 0.6, and the square area is divided into nine parts;
and judging that the point is positioned in the position in the three-dimensional seismic item evaluation classification map so as to evaluate the three-dimensional seismic item corresponding to the point, wherein when the point is positioned in an area enclosed by a straight line x being 0.6, x being 1, y being 0.6 and y being 1, the three-dimensional seismic item evaluation is optimal.
3. The three-dimensional seismic item evaluation method of claim 2, wherein the three-dimensional seismic item corresponding to the point is evaluated according to the position of the point in the three-dimensional seismic item evaluation classification map, and further comprising, when there are multiple points in the same part of the three-dimensional seismic item evaluation classification map, performing weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to the point to obtain a processing result, wherein the three-dimensional seismic item corresponding to the point with the large processing result value is better than the three-dimensional seismic item corresponding to the point with the small processing result value.
4. A three-dimensional seismic item evaluation apparatus, comprising:
the discoverable resource strategic value index obtaining module is used for analyzing the discoverable resource strategic value of the three-dimensional seismic project according to the oil and gas discovery probability of the work area of the three-dimensional seismic project, the exploratory well success rate of the analog area, the resource abundance of the analog area and the discoverable resource abundance to obtain the discoverable resource strategic value index, and comprises the following steps:
according to the formula
Calculating to obtain a discoverable resource strategic value index,
wherein, PProbability of oil and gas discovery＝PTrap ring×PPreservation of×PReservoir bed×PFilling with，PTrap ringFinding probability, P, for industrial trapsPreservation ofTo preserve the probability, PReservoir bedIs the reservoir probability, PFilling withFilling probability for oil gas;
Qabundance of discoverable resourcesTaking values according to the standards of each region;
Panalog zone exploration well success rateBetween 20% and 40%;
Qabundance of resources in the analogy regionTaking values according to the normalized resource abundance value table of the scale areas in different regions;
Qstrategic significance∈(0，1)；
The technical scheme feasibility index obtaining module is used for analyzing the technical scheme feasibility of the three-dimensional seismic project according to the earth surface condition, the underground geological condition, the three-dimensional seismic project resolution ratio demand index, the three-dimensional seismic project signal-to-noise ratio demand index and the exploration trap type to obtain the technical scheme feasibility index, and comprises the following steps:
according to the formula
Calculating to obtain a technical scheme feasibility index, wherein M represents the surface condition, G represents the underground geological condition, R represents a three-dimensional seismic project resolution requirement index, and SnRepresenting a signal-to-noise ratio demand index of the three-dimensional seismic project, and E representing an exploration trap type;
according to the formula
Wherein, V represents the maximum interval velocity of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; f represents the highest main frequency of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eRRepresenting the highest resolution required by the target layer of the three-dimensional seismic project to be implemented;
according to the formula
Acquiring a signal-to-noise ratio demand index of a three-dimensional seismic project; wherein, OSNRRepresenting the highest signal-to-noise ratio of the target layer of the three-dimensional seismic data implemented in the local area or the adjacent area; eSNRRepresenting the highest signal-to-noise ratio required by the target layer of the three-dimensional seismic project to be implemented;
the point drawing module is used for drawing points which are composed of a discoverable resource strategic value index serving as an abscissa and a technical scheme feasibility index serving as an ordinate in the three-dimensional seismic item evaluation classification chart;
and the evaluation module is used for evaluating the corresponding three-dimensional seismic item according to the position of the point in the three-dimensional seismic item evaluation classification chart.
5. The three-dimensional seismic item evaluation device of claim 4, wherein the evaluation module specifically comprises:
the classification submodule is used for dividing the three-dimensional seismic item evaluation classification map into nine parts, wherein the three-dimensional seismic item evaluation classification map is a square area with the side length of 1, a left lower intersection point of the square is used as a coordinate origin, two sides of the square forming the intersection point respectively fall in the positive direction of an x axis and the positive direction of a y axis, x is 0.3, x is 0.6, y is 0.3, and y is 0.6 to divide the square area into nine parts;
the evaluation sub-module is used for evaluating the three-dimensional seismic item corresponding to the point according to the position of the point in the three-dimensional seismic item evaluation classification map, wherein when the point is positioned in an area enclosed by x being 0.6, x being 1, y being 0.6, and y being 1, the three-dimensional seismic item evaluation is optimal;
and the sorting submodule is used for carrying out weighted average processing on the strategic resource value index and the technical scheme feasibility index corresponding to a point when the same part in the three-dimensional seismic item evaluation classification chart has the plurality of points to obtain a processing result, wherein the three-dimensional seismic item corresponding to the point with the large processing result value is superior to the three-dimensional seismic item corresponding to the point with the small processing result value.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551463A (en) * | 2008-04-03 | 2009-10-07 | 中国石油天然气集团公司 | Noise suppression evaluation method for three-dimensional observation system |
| EP2912492A1 (en) * | 2012-10-26 | 2015-09-02 | Chevron U.S.A. Inc. | System and method for analysis of trap integrity |
| CN105093348A (en) * | 2014-04-25 | 2015-11-25 | 中国石油化工股份有限公司 | Multilayer oil gas resource amount prediction method |
-
2016
- 2016-02-15 CN CN201610085983.2A patent/CN107085650B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551463A (en) * | 2008-04-03 | 2009-10-07 | 中国石油天然气集团公司 | Noise suppression evaluation method for three-dimensional observation system |
| EP2912492A1 (en) * | 2012-10-26 | 2015-09-02 | Chevron U.S.A. Inc. | System and method for analysis of trap integrity |
| CN105093348A (en) * | 2014-04-25 | 2015-11-25 | 中国石油化工股份有限公司 | Multilayer oil gas resource amount prediction method |
Non-Patent Citations (3)
| Title |
|---|
| 圈闭含油气概率赋值标准及其在塔里木盆地的应用;李娜 等;《石油与天然气地质》;20150430;第36卷(第2期);第330-338页 * |
| 油气勘探目标评价与优选系统;徐旭辉 等;《石油与天然气地质》;20150630;第36卷(第3期);第517-524页 * |
| 油气预探区带评价优选方法及其应用;刘超英 等;《石油与天然气地质》;20150430;第36卷(第2期);第314-318页 * |
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