CN105303274A - Oil and gas trap analysis method - Google Patents
Oil and gas trap analysis method Download PDFInfo
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- CN105303274A CN105303274A CN201410232735.7A CN201410232735A CN105303274A CN 105303274 A CN105303274 A CN 105303274A CN 201410232735 A CN201410232735 A CN 201410232735A CN 105303274 A CN105303274 A CN 105303274A
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Abstract
The invention discloses an oil and gas trap analysis method. The method comprises: a trap optimization step: performing trap optimization on a to-be-analyzed trap set according to a geologic risk parameter and a first value parameter of a trap, to obtain a first trap subset, wherein the geologic risk parameter comprises an oil and gas bearing probability and/or an internal rate of return, and the first value parameter comprises at least one of a resource volume, a net present value, and an expected return; and an pre-exploration well optimization step: performing pre-exploration well optimization on the trap subset according to a strategic risk parameter and a second value parameter of the trap, and obtaining a required trap according to a pre-exploration well optimization result, wherein the strategic risk parameter comprises at least one of a pre-exploration well success rate, an engineering technology risk parameter, and a strategic value coefficient, and the second value parameter comprises an expected return and/or a strategic value. According to the oil and gas trap analysis method provided by the invention, the trap is analyzed by using a trap parameter that can comprehensively reflect trap properties and a product of different parameters, so as to obtain a more objective and accurate analysis result.
Description
Technical field
The present invention relates to oil-gas exploration and development technical field, specifically, relate to a kind of hydrocarbon trap analytical approach.
Background technology
The basic goal of hydrocarbon trap analysis is as the Optimal Decision-making of multiple trap target provides foundation, and its result can provide Target For Drilling for the increasing the storage of oil gas is produced effectively, and advances design and the in-depth of region oil-gas exploration.Modern hydrocarbon trap analysis plays more and more important effect in oil-gas exploration, and in practice, also development goes out multiple trap analytical technique thereupon.
Existing trap analytical approach mainly utilizes simple quadrant preferably preferred to carry out trap with grey cluster.Quadrant method for optimizing is exactly the two class evaluatings selecting X-axis and Y-axis, by defining different threshold value, sets different favored area.The greatest problem of the method is exactly to superpose the optimizing evaluation parameter based on aspects such as economic benefits more simultaneously, also just cannot distinguish the otherness of different quadrant inner evaluation target further.
First GRAY CLUSTER is chosen relevant geologic parameter and is given every parameter suitable numerical value, to set up original cluster matrix.The subjective geology experiences of control fusion person sets up gray level whiting function subsequently.Then according to Grey Cluster Theory, initial parameter matrix and white function eigenwert are carried out sequential operation, obtains cluster result data matrix.GRAY CLUSTER has good effect for the multiple uncertainty parametric synthesis evaluation problem of solution, but the key of the method is the definition of white function.The white function definition of different control performance parameter also has difference to a great extent, and this is to the actual geology experiences of researcher and have higher requirement to the understanding of Parameter Variation, and therefore the method has higher dependency degree for the experience of researcher individual.
Based on above-mentioned situation, need a kind of objective, method of carrying out trap analysis exactly badly.
Summary of the invention
For solving the problem, the invention provides a kind of hydrocarbon trap analytical approach, the method comprises:
Trap preferred steps, according to geologic risk parameter and first value parameter of trap, trap is carried out to trap set to be analyzed preferred, obtain first lap closed subset, described geologic risk parameter comprises oily probability and/or internal rate of return, and described first value parameter comprises at least one item in stock number, net present value (NPV) and expected revenus;
Preparatory reconnaissance borehole preferred steps, according to Strategic Risk parameter and second value parameter of trap, preparatory reconnaissance borehole carries out to first lap closed subset preferred, required trap is obtained according to preparatory reconnaissance borehole preferred result, described Strategic Risk parameter comprises at least one item in preparatory reconnaissance borehole success ratio, engineering risk parameter and strategic value coefficient, and the second value parameter comprises expected revenus and/or strategic value.
According to one embodiment of present invention, in described trap preferred steps,
The geologic risk parameter of each trap in described trap set to be analyzed, the first value parameter and geologic risk parameter are compared with corresponding predetermined threshold value respectively to the product of the first value parameter, obtains first lap closed subset according to comparative result.
According to one embodiment of present invention, in described trap preferred steps,
For each trap, statistics value is greater than the quantity of the first trap parameter of corresponding predetermined threshold value, judges whether the ratio of the total quantity of this quantity and the first trap parameter is greater than the first preset ratio threshold value, if be greater than, then using the element of this trap as first lap closed subset
Wherein, described first trap parameter comprises the product of geologic risk parameter, the first value parameter and geologic risk parameter and the first value parameter.
According to one embodiment of present invention, the span of described first preset ratio threshold value comprises [0.7,1].
According to one embodiment of present invention, in described trap preferred steps,
For each trap in described trap set to be analyzed, judge whether the geologic risk parameter of trap, the first value parameter and geologic risk parameter are all greater than corresponding predetermined threshold value to the product of the first value parameter, if be greater than, then using the element of this trap as first lap closed subset.
According to one embodiment of present invention, in described preparatory reconnaissance borehole preferred steps,
The Strategic Risk parameter of each trap in described first lap closed subset, the second value parameter and Strategic Risk parameter are compared with corresponding predetermined threshold value respectively to the product of the second value parameter, the trap that preparatory reconnaissance borehole preferably requires is met, namely required trap according to comparative result.
According to one embodiment of present invention, in described preparatory reconnaissance borehole preferred steps,
For each trap in described first lap closed subset, statistics value is greater than the quantity of the second trap parameter of corresponding predetermined threshold value, judge whether the ratio of the total quantity of this quantity and the second trap parameter is greater than the second preset ratio threshold value, if be greater than, then judge that this trap meets preparatory reconnaissance borehole preferably requirement
Wherein, described second trap parameter comprises the product of Strategic Risk parameter, the second value parameter and Strategic Risk parameter and the second value parameter.
According to one embodiment of present invention, the span of described second preset ratio threshold value comprises [0.7,1].
According to one embodiment of present invention, in described preparatory reconnaissance borehole preferred steps,
For each trap in first lap closed subset, judge whether the Strategic Risk parameter of trap, the second value parameter and Strategic Risk parameter are all greater than corresponding predetermined threshold value to the product of the second value parameter, if be greater than, then judge that this trap meets preparatory reconnaissance borehole preferably requirement.
According to one embodiment of present invention, described Strategic Risk parameter is calculated according to the product of expected revenus and Strategic Risk coefficient.
By adopting, trap analytical approach provided by the invention can reflect that the trap parameter of trap characteristic is analyzed trap comprehensively, like this compared to existing trap analytical approach, the analysis result that this method obtains is more accurate, thus overcome adopt single factors carry out analyzing and causing analysis result inaccurately problem.Meanwhile, the present invention is by the different trap parameter product of introducing two, thus the quantitative test of value relation between achieving parameters, makes to portray and analyze more comprehensive for trap, which further increases precision of analysis.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, do simple introduction by accompanying drawing required in embodiment or description of the prior art below:
Fig. 1 is the process flow diagram of trap analytical approach according to an embodiment of the invention;
Fig. 2 is the Parameter Map of each trap in trap preferred steps according to an embodiment of the invention;
Fig. 3 is the preferred coordinate schematic diagram of trap according to an embodiment of the invention (horizontal ordinate is stock number, and ordinate is oily probability);
Fig. 4 is preferred another coordinate schematic diagram (horizontal ordinate is expected revenus, and ordinate is oily probability) of trap according to an embodiment of the invention;
Fig. 5 is preferred another the coordinate schematic diagram (horizontal ordinate is internal rate of return, and ordinate is expected revenus) of trap according to an embodiment of the invention;
Fig. 6 is preferred another coordinate schematic diagram (horizontal ordinate is stock number, and ordinate is expected revenus) of trap according to an embodiment of the invention;
Fig. 7 is the preferred coordinate schematic diagram of trap according to an embodiment of the invention with filtering option;
Fig. 8 is the preferred Parameter Map of preparatory reconnaissance borehole in first lap closed subset according to an embodiment of the invention;
Fig. 9 is the preferred coordinate schematic diagram of preparatory reconnaissance borehole (horizontal ordinate is strategic value, and ordinate is preparatory reconnaissance borehole success ratio) according to an embodiment of the invention.
Figure 10 is preferred another coordinate schematic diagram (horizontal ordinate is strategic value, and ordinate is expected revenus) of preparatory reconnaissance borehole according to an embodiment of the invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
In addition, can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
The object of the invention is to select satisfactory trap from multiple trap to be analyzed, in the process chosen, need to overcome the dependence to the actual geology experiences of researcher in existing trap method for optimizing, also need the reliability and the accuracy that ensure result simultaneously.Fig. 1 shows the process flow diagram of the hydrocarbon trap analytical approach that the present embodiment provides.
As shown in Figure 1, the present embodiment, first in step S101, according to Analysis of HC potential of traps, TRAP RESERVE analysis and trap financial analysis, obtains geologic risk parameter and first value parameter of each trap.Wherein, the geologic risk parameter of trap comprises oily probability and/or internal rate of return, and the first value parameter comprises at least one item in stock number, net present value (NPV), expected revenus.
In order to make trap preferred result more accurate, thus make the more realistic optimal result of trap finally determined, in the present embodiment, using oily probability and internal rate of return as geologic risk parameter, using stock number, net present value (NPV), expected revenus as the first value parameter.Like this, by analyzing multiple parameters of trap, the characteristic of trap to be analyzed can be reflected more accurately, all sidedly, thus make the analysis result of trap more accurate, reliable, think that the analysis decision of evaluation of trap personnel provides reliable basis.
Fig. 2 to show in the present embodiment each geologic risk parameter of each trap and the numerical tabular of the first value parameter in trap set to be analyzed.
As can be seen from Figure 2, in the present embodiment, trap set to be analyzed comprises 9 traps (i.e. trap S4, B1, WJZ, J1, ZS5, PDQ, SD, ZL, L6), wherein, the numerical value of the stock number of each trap comprises minimum business success stock number, P90 stock number (probability that namely value is greater than a certain occurrence is the stock number of 0.9), P50 stock number (probability that namely value is greater than a certain occurrence is the stock number of 0.5), P10 stock number (probability that namely value is greater than a certain occurrence is the stock number of 0.1), arithmetic mean stock number (stock number namely shown in Fig. 2).
It should be noted that, in other embodiments of the invention, the geologic risk parameter of trap, the first value parameter also can select one or several in above listed relevant parameter, can certainly comprise other Reasonable Parameters do not listed, the present invention is not limited thereto.
Again as shown in Figure 1, in step s 102, according to geologic risk parameter and first value parameter of each trap in trap set to be analyzed, trap is carried out to trap set to be analyzed preferred, and using the trap preferably obtained (namely meeting the trap that trap preferably requires) as first lap closed subset.
In the present embodiment, when carrying out trap and being preferred, the geologic risk parameter of each trap, the first value parameter and geologic risk parameter are compared with corresponding predetermined threshold value respectively to the product of the first value parameter, add up the trap meeting trap and preferably require according to comparative result, thus obtain first lap closed subset.
Such as, respectively the product of the stock number of trap, oily probability and stock number and oily probability and corresponding predetermined threshold value are compared, if the value of above-mentioned three parameters is all greater than corresponding predetermined threshold value, then show that these three parameters of this trap all meet trap preferably requirement.Wherein, the product of the geologic risk parameter of trap, the first value parameter and geologic risk parameter and the first value parameter together constitutes the first trap parameter of trap.
The present embodiment, on the basis analyzed geology risk parameter and the first value parameter, also introduces the analysis of the product to risk parameter and the first value parameter.Solely analyze parameters in existing trap analytical approach, this method that the present embodiment provides also is analyzed the product of risk parameter and the first value parameter.And the product of risk parameter and the first value parameter can embody the mutual relationship between different parameters, so this method can reflect the characteristic of trap more all sidedly, thus make the trap analysis result that obtains also more accurate.
In order to more clearly describe above-mentioned trap preferred process, trap preferred process is reflected in coordinate schematic diagram by the present embodiment, below gather Fig. 3 ~ different parameters that utilizes illustrated in fig. 6 to carry out preferred coordinate schematic diagram to analysis trap set, be further described the trap preferred process in the present embodiment.
The preferred schematic diagram of trap that Fig. 3 is take stock number as horizontal ordinate, oily probability is ordinate.As can be seen from the figure, in the present embodiment, the stock number threshold value of trap is 200 (i.e. straight line x=200), and oily probability threshold value is 0.2 (i.e. straight line y=0.2), and the threshold value of the product of stock number and oily probability is 90 (i.e. curve f=xy=90).Wherein, curve f=xy=90 represents under the prerequisite meeting the constraint of a certain economic return, when a certain occurrence of hypothetical resource amount, and the minimum value corresponding to oily probability, or when oily probability at a certain occurrence, the minimum value corresponding to stock number.
Thus according to above-mentioned three threshold values, set up rectangular coordinate system can be divided into multiple region, zones of different corresponds to different parameter characteristics, by analyzing the position of each trap in rectangular coordinate system, can judge whether above-mentioned three parameters of each trap meet corresponding threshold requirement.
, it can also be seen that from Fig. 3 meanwhile, when with the stock number of trap for horizontal ordinate time, the stock number parameter of each trap will be expressed as the line segment that is parallel to transverse axis.Wherein, the left end point (i.e. figure intermediate cam symbol position) of line segment represents minimum successful resource amount, and the right endpoint of line segment represents P10 stock number, is also distributed with the arithmetic mean stock number of P90 stock number and trap in line segment.
In order to make the trap preferred result that obtains more reliable, the present embodiment is used as the RESERVE EVALUATION parameter of trap with the arithmetic mean stock number of trap.Such as, but it should be noted that, in other embodiments of the invention, according to the trap preferably requirement of reality, the RESERVE EVALUATION parameter of trap can also select other parameters, and minimum successful resource amount etc., the present invention is not limited thereto.
As shown in Figure 3, for trap S4, its arithmetic mean stock number is 353.14, and oily probability is 0.48, and the product of arithmetic mean stock number and oily probability is 169.5.The value of these three parameters is all greater than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 4, namely shows as trap S4 be positioned at above the right side of straight line x=200, straight line y=0.2, above curve f=xy=90.Can judge that above-mentioned three parameters of trap S4 meet trap preferably requirement thus.
For trap L6, the arithmetic average of its stock number is 86.87, and oily probability is 0.42, and the product of trap mean value and oily probability is 36.48.Wherein, the arithmetic average of TRAP RESERVE and trap mean value are all less than corresponding default trap threshold value to the product of oily probability, and oily probability is greater than corresponding predetermined threshold value, namely in the rectangular coordinate system shown in Fig. 3, show as that trap L6 is positioned at above straight line y=0.2, the below of curve f=xy=90, the arithmetic average of TRAP RESERVE is positioned at the left side of straight line x=200.Can judge that the arithmetic average of the stock number of trap L6 and the product of trap mean value and oily probability do not meet trap preferably requirement thus, but oily probability meets trap preferably requirement.
In like manner whether can also be greater than corresponding predetermined threshold value to above-mentioned three parameters of other traps in trap set to be analyzed.As can be seen from Figure 3, in the present embodiment, the trap that above-mentioned three parameters are all greater than corresponding predetermined threshold value comprises trap S4, J1, B1, PDQ, ZS5, WJZ.
The preferred schematic diagram of trap that it is horizontal ordinate that Fig. 4 shows with expected revenus, oily probability is ordinate.As can be seen from Figure 4, in the present embodiment, the expected revenus threshold value of trap is 17,000 ten thousand yuan (i.e. straight line x=17000), oily probability threshold value is 0.2 (i.e. straight line y=0.2), and the threshold value of the product of expected revenus and oily probability is 8000 (i.e. curve f=xy=8000).
As shown in Figure 4, for trap S4, its expected revenus is 22934.88, and oily probability is 0.48, and the product of arithmetic mean stock number and oily probability is 11008.7.The value of these three parameters is all greater than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 4, namely shows as trap S4 be positioned at above the right side of straight line x=17000, straight line y=0.2, above curve f=xy=8000.Can judge that above-mentioned three parameters of trap S4 meet trap preferably requirement thus.
For trap WJZ, its expected revenus is 6341.5, and oily probability is 0.22, and the product of expected revenus and oily probability is 1395.1.The value of oily probability is only had all to be greater than oily probability threshold value 0.2 in these three parameters, the value of other two parameters is all less than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 4, namely show as that trap WJZ is positioned at above the left side of straight line x=17000, straight line y=0.2, the below of curve f=xy=8000.
In like manner whether can also be greater than corresponding predetermined threshold value to above-mentioned three parameters of other traps in trap set to be analyzed.As can be seen from Figure 4, in the present embodiment, the trap that above-mentioned three parameters are all greater than corresponding predetermined threshold value comprises trap S4, J1, B1.
The preferred schematic diagram of trap that it is horizontal ordinate that Fig. 5 shows with internal rate of return, expected revenus is ordinate.As can be seen from Figure 5, in the present embodiment, the trap that these three parameters are all greater than corresponding predetermined threshold value comprises trap B1, S4, J1.
Certainly, in other embodiments of the invention, trap can also be carried out according to other parameter combinations forms preferred.Such as in another embodiment of invention, judge that stock number, expected revenus and stock number and the product of expected revenus are all greater than corresponding threshold value and are used as trap and meet the necessary condition that trap preferably requires, the preferred schematic diagram of trap that it is horizontal ordinate that Fig. 6 shows with stock number, expected revenus is ordinate, its principle is identical with above-mentioned Fig. 3 ~ Fig. 5 principle, does not repeat them here.
Utilize above-mentioned principle, can also judge to treat whether other parameters of each trap in molecule trap set are greater than corresponding predetermined threshold value, the present invention is not limited thereto.
In the present embodiment, judge whether a certain trap meets trap when preferably requiring, only have when the first trap parameter of this trap is all greater than corresponding predetermined threshold value, just judge that this trap meets trap preferably requirement, thus using this trap as the element of in first lap closed subset.
In the present embodiment, the trap that trap preferably requires that meets finally obtained comprises trap S4, B1 and J1, and namely first lap closed subset comprises trap S4, B1 and J1 tri-elements.
Certainly, in other embodiments of the invention, can also judge whether each trap meets trap preferably requirement, the present invention is not limited thereto according to other reasonable terms.Such as, in one embodiment of the invention, judge a certain trap whether meet trap preferably require time, first add up the quantity that value is greater than the first trap parameter of corresponding predetermined threshold value, judge whether the ratio of the total quantity of this quantity and the first trap parameter is greater than the first preset ratio threshold value subsequently.If be greater than, then judged that this trap meets and preset trap preferably requirement, and using the element of this trap as first lap closed subset.
In this embodiment, altogether can form 11 parameters (namely the first trap parameter comprises 11 parameters) by the product of the geologic risk parameter of trap, the first value parameter and geologic risk parameter and the first value parameter.When there being 8 parameters to be greater than (preset ratio threshold value is 0.7) when corresponding predetermined threshold value requires in these 11 parameters, then judge that this trap meets trap preferably requirement.It should be noted that, in other embodiments of the invention, preset ratio threshold value can also be other reasonable values, and such as, other values in interval [0.7,1], the present invention is not limited thereto.
Coordinate system schematic diagram shown in above-mentioned Fig. 3 ~ Fig. 6 is only used to more clearly to describe the object of trap analytical approach provided by the present invention, principle and advantage, certainly, in the preferred process of trap, above-mentioned schematic diagram can carry out visual presenting to trap analyst, so that trap analyst carries out observation and analysis intuitively.Further, being current carrying out visual, in order to more meet the observation habit of user, color essential can also being added in coordinate system schematic diagram.
Such as shown in Figure 7, carrying out the visual in current of coordinate diagram to trap analyst, on the basis of figure shown in Fig. 3, the present embodiment with the addition of filtration types and selects option.The filtration types option provided in the present embodiment comprise meet straight line arrange and curve arrange, meet straight line arrange but do not meet curve arrange, do not meet straight line arrange but meet curve arrange, do not meet straight line setting and curve four Class Options are set.
As can be seen from Figure 7, meet straight line to arrange and curve arranges the expression stock number arithmetic average of trap and oily probability is all greater than corresponding predetermined threshold value, meanwhile, TRAP RESERVE arithmetic average is also greater than corresponding predetermined threshold value to the product of oily probability.When trap meet this require time, then by this trap adopt green show.In like manner, when trap meets other filtering options, then different colors trap is adopted to present.Such as, will meet straight line arrange but do not meet curve arrange trap adopt pink colour show, will not meet straight line arrange but meet curve arrange trap adopt yellow show, will not meet straight line arrange and curve arrange trap employing red display.Certainly, in other embodiments of the invention, other colour match can also be adopted to distinguish and to meet the different trap required, the present invention is not limited thereto.
Again as shown in Figure 1, after preferably obtaining first lap closed subset by trap, the present embodiment in step s 103, according to Strategic Risk parameter and second value parameter of trap, carries out preparatory reconnaissance borehole preferably to first lap closed subset, thus obtains the trap preferably.Wherein, Strategic Risk parameter comprises at least one item in preparatory reconnaissance borehole success ratio, engineering risk parameter and strategic value coefficient, second value parameter comprises expected revenus and/or strategic value, and these parameters above-mentioned all can obtain according to Analysis of HC potential of traps, TRAP RESERVE analysis and trap financial analysis.
The optimum trap that the trap preferably obtained to make preparatory reconnaissance borehole is more realistic, in the present embodiment, using preparatory reconnaissance borehole success ratio, engineering risk parameter and strategic value coefficient three parameters all as the key element of Strategic Risk parameter, and using expected revenus and the strategic value key element as the second value parameter, Fig. 8 shows the expected revenus of each trap and the value of strategic value in first lap closed subset.
It should be noted that, in other embodiments of the invention, Strategic Risk parameter and the second value parameter also only can choose the partial parameters in above-mentioned lising, certainly, Strategic Risk parameter and the second value parameter also can comprise other Reasonable Parameters unlisted in other the application, the present invention is not limited thereto.
The present embodiment is when carrying out preparatory reconnaissance borehole and being preferred, the Strategic Risk parameter of each trap in first lap closed subset, the second value parameter and Strategic Risk parameter are compared with corresponding predetermined threshold value respectively to the product of the second value parameter, and add up the trap meeting preparatory reconnaissance borehole and preferably require according to comparative result, thus obtain the trap preferably.
Such as, respectively the product of the strategic value of trap, preparatory reconnaissance borehole success ratio and strategic value and preparatory reconnaissance borehole success ratio and corresponding predetermined threshold value are compared, if the value of above-mentioned three parameters is all greater than corresponding predetermined threshold value, then show that these three parameters of this trap all meet preparatory reconnaissance borehole preferably requirement.Wherein, the Strategic Risk parameter, second of trap is worth and the product of Strategic Risk parameter and the second value parameter together constitutes the second trap parameter of trap.
In order to more clearly describe the preferred principle of preparatory reconnaissance borehole, below in conjunction with Fig. 9 and Figure 10, the preparatory reconnaissance borehole preferred process in the trap analytical approach provided in the present embodiment is further described.
The preferred schematic diagram of preparatory reconnaissance borehole that it is horizontal ordinate that Fig. 9 shows with strategic value, preparatory reconnaissance borehole success ratio is ordinate.As can be seen from Figure 9, in the present embodiment, the strategic value threshold value of trap is 20,000 ten thousand yuan (i.e. straight line x=20000), preparatory reconnaissance borehole success ratio threshold value is 0.2 (i.e. straight line y=0.2), and the threshold value of the product of expected revenus and oily probability is 8000 (i.e. curve f=xy=8000).
As shown in Figure 9, for trap S4, its strategic value is 16054.42 ten thousand yuan, and preparatory reconnaissance borehole success ratio is 0.38, and the product of strategic value and preparatory reconnaissance borehole success ratio is 6100.7.The value of preparatory reconnaissance borehole success ratio is only had all to be greater than corresponding predetermined threshold value in these three parameters, the value of other two parameters is all less than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 9, namely show as that trap S4 is positioned at above the left side of straight line x=20000, straight line y=0.2, the below of curve f=xy=8000.
In like manner also can show that the preparatory reconnaissance borehole success ratio of trap J1 meets preparatory reconnaissance borehole preferably requirement, and the product of strategic value and strategic value and preparatory reconnaissance borehole success ratio does not all meet preparatory reconnaissance borehole preferably requirement, namely trap J1 is positioned at the left side of straight line x=20000, the top of straight line y=0.2, the below of curve f=xy=8000.
For trap B1, its strategic value is 66615.32 ten thousand yuan, and preparatory reconnaissance borehole success ratio is 0.32, and the product of strategic value and oily probability is 21316.9.Value in these three parameters is all greater than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 9, namely shows as trap B1 be positioned at above the right side of straight line x=17000, straight line y=0.2, above curve f=xy=8000.
The preferred schematic diagram of preparatory reconnaissance borehole that it is horizontal ordinate that Figure 10 shows with strategic value, expected revenus is ordinate.As can be seen from Figure 10, in the present embodiment, the strategic value threshold value of trap is 20,000 ten thousand yuan (i.e. straight line x=20000), and expected revenus threshold value is 30,000 ten thousand yuan (i.e. straight line y=30000), and the threshold value of the product of strategic value and expected revenus is 1.5 × 10
9(i.e. curve f=xy=1.5 × 10
9).
As shown in Figure 10, for trap S4, its strategic value is 16054.42 ten thousand yuan, and expected revenus is 22934.88 ten thousand yuan, and the product of expected revenus and preparatory reconnaissance borehole success ratio is 3.7 × 10
8.These three parameters are all less than corresponding predetermined threshold value, in the rectangular coordinate system shown in Figure 10, namely show as trap S4 be positioned at the left side of straight line x=20000, the below of straight line y=30000, curve f=xy=1.5 × 10
9below.In like manner also can show that above-mentioned three parameters of trap J1 are also all less than corresponding predetermined threshold value.
For trap B1, its strategic value is 66615.32 ten thousand yuan, and expected revenus is 102485.1 ten thousand yuan, and the product of expected revenus and strategic value is 6.3 × 10
9.Value in these three parameters is all greater than corresponding predetermined threshold value, in the rectangular coordinate system shown in Fig. 9, namely show as that trap B1 is positioned at above the right side of straight line x=20000, straight line y=30000, curve f=xy=1.5 × 10
9top.
In like manner can also judge that in first lap closed subset, whether other parameters of each trap are greater than corresponding predetermined threshold value, do not repeat them here.
Judging whether the parameters obtaining trap meets after preparatory reconnaissance borehole preferably requires, can judge whether this trap meets preparatory reconnaissance borehole preferably requirement in conjunction with these judged results.In the present embodiment, judge whether a certain trap meets trap when preferably requiring, only has when the second trap parameter of this trap is all greater than corresponding predetermined threshold value, just judges that this trap meets preparatory reconnaissance borehole preferably requirement.In the present embodiment, finally obtain to meet the trap that preparatory reconnaissance borehole preferably requires be B1.
Certainly, in other embodiments of the invention, can also judge whether each trap meets preparatory reconnaissance borehole preferably requirement, the present invention is not limited thereto according to other reasonable terms.Such as, in one embodiment of the invention, judge a certain trap whether meet preparatory reconnaissance borehole preferably require time, first add up the quantity that value is greater than the second trap parameter of corresponding predetermined threshold value, judge whether the ratio of the total quantity of this quantity and the second trap parameter is greater than the second preset ratio threshold value subsequently.If be greater than, then judge that this trap meets and preset preparatory reconnaissance borehole preferably requirement, otherwise this trap do not met preparatory reconnaissance borehole preferably requirement.
In this embodiment, altogether can form 11 parameters (namely the second trap parameter comprises 11 parameters) by the product of the Strategic Risk parameter of trap, the second value parameter and Strategic Risk parameter and the second value parameter.When there being 8 parameters to be greater than (preset ratio threshold value is 0.7) when corresponding predetermined threshold value requires in these 11 parameters, then judge that this trap meets preparatory reconnaissance borehole preferably requirement.It should be noted that, in other embodiments of the invention, this preset ratio threshold value can also be other reasonable values, and such as, other values in interval [0.7,1], the present invention is not limited thereto.
Similar with trap preferred process, in preparatory reconnaissance borehole preferred process, also can present the rectangular coordinate system of carrying out trap mark with different colours to trap analyst, its principle is identical with trap preferred process, does not repeat them here.
In sum, trap analytical approach provided by the invention overcomes and adopts single factors to carry out analyzing and causing analysis result inaccurately problem.Such as trap WJZ, its stock number is 272.14 ten thousand tons, ranked third in 9 traps to be analyzed, and its net present value (NPV) is 139809.38, ranked second in 9 traps to be analyzed.But the oily probability of this trap is 0.22, expected revenus is 6341.5.If so only adopt stock number and net present value (NPV) to carry out trap analysis, then can obtain trap WJZ and meet trap preferably requirement, this actual characteristic that is obvious and this trap has larger difference.By adopting, method provided by the invention can reflect that the trap parameter of trap characteristic is analyzed trap comprehensively, like this compared to existing trap analytical approach, the analysis result that this method obtains is more accurate.Meanwhile, the present invention, by the analysis to corresponding trap parameter product value, further increases precision of analysis.
It should be understood that disclosed embodiment of this invention is not limited to ad hoc structure disclosed herein, treatment step or material, and the equivalent of these features that those of ordinary skill in the related art understand should be extended to substitute.It is to be further understood that term is only for describing the object of specific embodiment as used herein, and and do not mean that restriction.
Special characteristic, structure or characteristic that " embodiment " mentioned in instructions or " embodiment " mean to describe in conjunction with the embodiments comprise at least one embodiment of the present invention.Therefore, instructions various places throughout occur phrase " embodiment " or " embodiment " might not all refer to same embodiment.
Although above-mentioned example is for illustration of the principle of the present invention in one or more application, but for a person skilled in the art, when not deviating from principle of the present invention and thought, obviously can in form, the details of usage and enforcement does various amendment and need not creative work be paid.Therefore, the present invention is limited by appending claims.
Claims (10)
1. a hydrocarbon trap analytical approach, is characterized in that, described method comprises:
Trap preferred steps, according to geologic risk parameter and first value parameter of trap, trap is carried out to trap set to be analyzed preferred, obtain first lap closed subset, described geologic risk parameter comprises oily probability and/or internal rate of return, and described first value parameter comprises at least one item in stock number, net present value (NPV) and expected revenus;
Preparatory reconnaissance borehole preferred steps, according to Strategic Risk parameter and second value parameter of trap, preparatory reconnaissance borehole carries out to first lap closed subset preferred, required trap is obtained according to preparatory reconnaissance borehole preferred result, described Strategic Risk parameter comprises at least one item in preparatory reconnaissance borehole success ratio, engineering risk parameter and strategic value coefficient, and the second value parameter comprises expected revenus and/or strategic value.
2. the method for claim 1, is characterized in that, in described trap preferred steps,
The geologic risk parameter of each trap in described trap set to be analyzed, the first value parameter and geologic risk parameter are compared with corresponding predetermined threshold value respectively to the product of the first value parameter, obtains first lap closed subset according to comparative result.
3. method as claimed in claim 2, is characterized in that, in described trap preferred steps,
For each trap, statistics value is greater than the quantity of the first trap parameter of corresponding predetermined threshold value, judges whether the ratio of the total quantity of this quantity and the first trap parameter is greater than the first preset ratio threshold value, if be greater than, then using the element of this trap as first lap closed subset
Wherein, described first trap parameter comprises the product of geologic risk parameter, the first value parameter and geologic risk parameter and the first value parameter.
4. method as claimed in claim 3, it is characterized in that, the span of described first preset ratio threshold value comprises [0.7,1].
5. method as claimed in claim 2, is characterized in that, in described trap preferred steps,
For each trap in described trap set to be analyzed, judge whether the geologic risk parameter of trap, the first value parameter and geologic risk parameter are all greater than corresponding predetermined threshold value to the product of the first value parameter, if be greater than, then using the element of this trap as first lap closed subset.
6. the method according to any one of Claims 1 to 5, is characterized in that, in described preparatory reconnaissance borehole preferred steps,
The Strategic Risk parameter of each trap in described first lap closed subset, the second value parameter and Strategic Risk parameter are compared with corresponding predetermined threshold value respectively to the product of the second value parameter, the trap that preparatory reconnaissance borehole preferably requires is met, namely required trap according to comparative result.
7. method as claimed in claim 6, is characterized in that, in described preparatory reconnaissance borehole preferred steps,
For each trap in described first lap closed subset, statistics value is greater than the quantity of the second trap parameter of corresponding predetermined threshold value, judge whether the ratio of the total quantity of this quantity and the second trap parameter is greater than the second preset ratio threshold value, if be greater than, then judge that this trap meets preparatory reconnaissance borehole preferably requirement
Wherein, described second trap parameter comprises the product of Strategic Risk parameter, the second value parameter and Strategic Risk parameter and the second value parameter.
8. method as claimed in claim 7, it is characterized in that, the span of described second preset ratio threshold value comprises [0.7,1].
9. method as claimed in claim 6, is characterized in that, in described preparatory reconnaissance borehole preferred steps,
For each trap in first lap closed subset, judge whether the Strategic Risk parameter of trap, the second value parameter and Strategic Risk parameter are all greater than corresponding predetermined threshold value to the product of the second value parameter, if be greater than, then judge that this trap meets preparatory reconnaissance borehole preferably requirement.
10. the method according to any one of claim 1 ~ 9, is characterized in that, the product according to expected revenus and Strategic Risk coefficient calculates described Strategic Risk parameter.
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