CN105447292A - Oil gas wildcat screening method - Google Patents
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- CN105447292A CN105447292A CN201410410249.XA CN201410410249A CN105447292A CN 105447292 A CN105447292 A CN 105447292A CN 201410410249 A CN201410410249 A CN 201410410249A CN 105447292 A CN105447292 A CN 105447292A
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Abstract
The present invention discloses a method for screening an oil gas wildcat target. The method comprises the following steps: obtaining a drilling success probability of a to-be-screened wildcat target and recoverable resource amount; obtaining a development risk scale of the to-be-screened wildcat target based on the drilling success probability and the recoverable resource amount; determining a threshold of the development risk scale based on an exploration target; and screening according to the threshold of the development risk scale, so as to obtain a wildcat target. According to the wildcat target screening method disclosed by the present invention, optimization of wildcats with different regions, different fields and different resource types on a unified platform can be realized, and not only operability and practicality of the screening method can be significantly improved, but also human subjective influences during a screening process are maximally reduced, and more reliable bases are provided for determination of a wildcat deployment direction and sequence, exploration investment optimization and layout plan making in an oil company.
Description
Technical field
The present invention relates to petroleum exploration field, relate to a kind of oil gas preparatory reconnaissance borehole screening technique specifically.
Background technology
In petroleum prospecting process, oil company needed from a large amount of alternative preparatory reconnaissance borehole targets, filter out favourable exploration targets probing oil gas preparatory reconnaissance borehole before actual well drilled, thus carried out unifying decisions and arrangements, indicated direction and the order of preparatory reconnaissance borehole deployment.The screening of preparatory reconnaissance borehole target is that oil company formulates the basis of annual Exploration planning, medium-term and long-term plans and exploration project management with crucial.
In the prior art, usual domestic and international oily company all adopts the method for screening trap to screen preparatory reconnaissance borehole.Simultaneously existing screening technique ubiquity parameter system disunity, and scoring criteria such as not to quantize at the problem.And due to preparatory reconnaissance borehole target resource gauge is calculated and correlation computations parameter study inadequate, therefore cause the screening technique of prior art seldom from the angle screening preparatory reconnaissance borehole target of economic evaluation.
Based on above-mentioned situation, existing preparatory reconnaissance borehole object filtering method operability and practicality very poor.And in existing screening technique, there is no a set of screening technique that can realize unifying the preparatory reconnaissance borehole target of different regions, different field, different resource type screening.
Therefore, for existing screening technique operability and practicality very poor and cannot realize to the preparatory reconnaissance borehole target of different regions, different field, different resource type unify screen problem, need a kind of screening preparatory reconnaissance borehole order calibration method newly to reach the object of unified screening preparatory reconnaissance borehole target, and realize more excellent operability and practicality.
Summary of the invention
For the operability of preparatory reconnaissance borehole object filtering method in art methods and practicality very poor and cannot realize unifying the problem of screening to the preparatory reconnaissance borehole target of different regions, different field, different resource type, the invention provides a kind of screening oil gas preparatory reconnaissance borehole order calibration method, described method comprises following steps:
Data acquisition step, obtains the probing probability of success and the mining resources amount of preparatory reconnaissance borehole target to be screened;
Obtain development risk scale step, obtain described preparatory reconnaissance borehole target developing risk scale to be screened based on the described probing probability of success and described mining resources amount;
Threshold value obtaining step, determines the threshold value of described development risk scale based on exploration targets;
First screening step, the threshold value according to described development risk scale is screened, thus filters out preparatory reconnaissance borehole target.
In one embodiment, in described data acquisition step, calculate the described probing probability of success according to the geologic risk of described preparatory reconnaissance borehole target to be screened and engineering risk.
In one embodiment, in described data acquisition step, described geologic risk comprises the oily probability of described preparatory reconnaissance borehole target to be screened.
In one embodiment, described acquisition development risk scale step comprises:
Based on described mining resources amount determine described preparatory reconnaissance borehole target to be screened can exploitation scale index;
The scale coefficient of described preparatory reconnaissance borehole target to be screened is determined based on exploration targets;
According to described can preparatory reconnaissance borehole target to be screened described in exploitation scale index and described scale coefficient calculations can exploitation scale;
According to the described probing probability of success and describedly can obtain described development risk scale by exploitation scale.
In one embodiment, in described data acquisition step, described can exploitation scale be described can the product of exploitation scale index and described scale coefficient.
In one embodiment, described method also comprises the second screening step, screens described preparatory reconnaissance borehole target to be screened specifically to drill the probability of success for threshold value.
In one embodiment, described method also comprises three screening step, and wherein, described three screening step comprises the following steps:
Determine the hydrocarbon-bearing pool reserves scale threshold value of described preparatory reconnaissance borehole target to be screened;
Described preparatory reconnaissance borehole target to be screened is screened according to described hydrocarbon-bearing pool reserves scale threshold value based on described mining resources amount.
In one embodiment, described method also comprises the 4th screening step, and wherein, described 4th screening step comprises the following steps:
The expection calculating described preparatory reconnaissance borehole target to be screened can exploitation scale;
Exploitation scale and described development risk scale described preparatory reconnaissance borehole target to be screened can be screened based on described expection.
In one embodiment, described three screening step is carried out on the basis of described second screening step, the basis of described three screening step is carried out described 4th screening step, the basis of described 4th screening step is carried out described first screening step.
In one embodiment, described method also comprises ordered steps, sorts according to the selection result of described development risk scale to described first screening.
Compared with prior art, tool of the present invention has the following advantages:
Preparatory reconnaissance borehole object filtering method of the present invention establishes for preferred screening index for preparatory reconnaissance borehole, thus can realize preferred on the unified platform of preparatory reconnaissance borehole of different regions, different field, different resource type;
Preparatory reconnaissance borehole object filtering method of the present invention determines unified screening process, substantially increases operability and the practicality of screening technique;
Preparatory reconnaissance borehole object filtering method of the present invention decreases the impact of artificial subjective factor in screening process to greatest extent, the selection result more accurately and reliably, the direction disposed for oily company preparatory reconnaissance borehole and order are determined, optimize exploration investment, the plan of developing planning provides more reliable foundation.
Further feature of the present invention or advantage will be set forth in the following description.Further, Partial Feature of the present invention or advantage will be become apparent by instructions, or be understood by implementing the present invention.Object of the present invention and certain advantages realize by step specifically noted in instructions, claims and accompanying drawing or obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, with embodiments of the invention jointly for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is flowchart according to an embodiment of the invention;
Fig. 2 is that expect according to an embodiment of the invention can exploitation scale-development risk scale coordinate diagram;
Fig. 3 drills the probability of success-can exploitation scale coordinate diagram according to an embodiment of the invention.
Embodiment
Embodiments of the present invention are described in detail below with reference to drawings and Examples, enforcement personnel of the present invention whereby can fully understand how application technology means solve technical matters in the present invention, and reach the implementation procedure of technique effect and specifically implement the present invention according to above-mentioned implementation procedure.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.
When oil company formulates annual Exploration planning, the management of medium-term and long-term plans exploration project, need from preparatory reconnaissance borehole target alternative in a large number, filter out the preparatory reconnaissance borehole target met the expected requirements.Thus indicate direction and the order of preparatory reconnaissance borehole deployment, and then be oil company's pre-optimized exploration investment, the plan of developing planning provides foundation.For current oil gas preparatory reconnaissance borehole object filtering method operability and the poor situation of practicality, in order to realize the unified screening of preparatory reconnaissance borehole target of different regions, different field, different resource type, the invention discloses a kind of preparatory reconnaissance borehole object filtering method being core with " exploitation venture analysis-can exploitation scale evaluation ".
Can exploitation scale, refer to and under prior art conditions rear getable development result is developed to specific trap.Based on to can the quantitative test of exploitation scale, system of selection of the present invention can unify to select to the trap of different regions, different field.
Be understood that, the final development result of trap is except the resource characteristic of this kind of trap of mining resources amount being subject to this trap and comprising, and geographic position, surrounding enviroment etc. the factor of the erection of existing drilling technique, drilling well, hydrocarbon resources transport and trap all can have influence on the final development result of trap.In practical operation, many kinds of parameters can be adopted to describe development result.Such as, input-output ratio is utilized to carry out the corresponding development result of equivalent description.
In order to specifically describe final development result, need from multiple angle, adopting different variablees to carry out quantization signifying can exploitation scale.In quantum chemical method trap can in the process of exploitation scale, in order to finally obtain unified quantized result, first coming that quantum chemical method can affect based on unified variable unit can the factor of exploitation scale.Usually, by hydrocarbon resources amount (all variablees all use the hydrocarbon resources scale of respective numbers to levy by unit: ten thousand tons) or using the oil field output value (unit: unit) that obtains based on hydrocarbon resources amount as unified variable unit.
Next the implementation process of screening technique of the present invention is described in detail with a specific embodiment of the present invention.Fig. 1 is the implementing procedure figure of one embodiment of the invention, and the step shown in the process flow diagram of accompanying drawing can perform in the computer system comprising such as one group of computer executable instructions.Although show the logical order of each step in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Screening technique of the present invention is mainly based on prospecting borehole exploitation risk analysis technology and can exploitation scale evaluation.In order to make the result of screening better, and in order to reduce the complicated calculations in screening as far as possible, in the present embodiment, have employed multistep and screen the mode of successively going forward one by one.As shown in Figure 1, the screening technique of the present embodiment introduces multiple screening step: step S140 (the first screening step), step S150 (the second screening step), step S160 (three screening step), step S170 (the 4th screening step).
First the screening technique implementing the present embodiment will carry out step S110, obtains the probing probability of success of preparatory reconnaissance borehole target to be screened.In the present embodiment, the described probing probability of success is calculated according to the geologic risk of described preparatory reconnaissance borehole target to be screened and engineering risk.
First be engineering risk probability by engineering risk quantitative definition.Engineering Technology Adaptability Evaluation when a preparatory reconnaissance borehole is drilled, 4 intervals are divided to carry out probability assignment according to its evaluation result interval to its engineering risk: if engineering, technology adapt to target exploration exploitation at present, supporting technology series is formed, between assigned area be then [0.8,1); If Engineering Technology comparatively adapts to exploratory development at present, Some Key Technologies is left to be desired, then between assigned area be [0.6,0.8); If at present Engineering Technology series is just formed, portion of techniques is still needed tackling key problem, then between assigned area be [0.4,0.6); If engineering, technology can not meet exploratory development at present, supporting technology needs extensive improvement and perfection, then between assigned area be [0,0.4).
Then be geologic risk probability by geologic risk quantitative definition.In the present embodiment, the geologic risk probability of oil gas preparatory reconnaissance borehole is characterized with oily probabilities quantify.The geologic risk of preparatory reconnaissance borehole target is the oily probability of preparatory reconnaissance borehole target to be screened.The oily probability of single trap in preparatory reconnaissance borehole target be expressed as four main genes (trap, fill, reservoir, preservation) probability product (Pg=Π Pi) wherein P
ifor individual event becomes to hide the probability (P of ground prime factor generation
1-trap probability, P
2-fill probability, P
3-reservoir probability, P
4-preserve probability).To the preparatory reconnaissance borehole target comprising multiple trap, its oily probability refers to the probability having at least a trap to find oil gas.
Based on the definition of above-mentioned geologic risk and engineering risk, in the present embodiment, the probing probability of success is the product of the geologic risk probability of preparatory reconnaissance borehole target to be screened and the engineering risk probability of preparatory reconnaissance borehole target to be screened.Therefore in step s 110, utilize the product of the engineering risk probability of the geologic risk probability of preparatory reconnaissance borehole target to be screened and preparatory reconnaissance borehole target to be screened to calculate the probing probability of success.Owing to take into account the impact of geologic risk and engineering risk, preparatory reconnaissance borehole object filtering method of the present invention greatly reducing the impact of artificial subjective factor in screening process, and the selection result more accurately and reliably.
After the probing probability of success of preparatory reconnaissance borehole target has calculated, next the second screening step (S150) is carried out, in this step, specifically to drill the probability of success for screening threshold value, the probing probability of success obtained based on step S110 is screened preparatory reconnaissance borehole target to be screened.Owing to drilling the probability of success less than 5% almost without oil and gas discovery in historical statistics, the probing probability of success 5% therefore in the present embodiment, is adopted to carry out step S150 for screening threshold value.
Next carry out step S120, calculate the mining resources amount of preparatory reconnaissance borehole target.For the preparatory reconnaissance borehole only drilling a trap, the Resources calculation of preparatory reconnaissance borehole target is numerical value and the distributed model of first obtaining correlation parameter, then obtains the distribution of mining resources amount by Monte Carlo simulation.
For the preparatory reconnaissance borehole of the longitudinally multiple trap of upper probing, preparatory reconnaissance borehole target resource amount refers to the stock number after having a trap discovery oil gas at least and distribution.Calculate different risk and stock number that this type of target resource amount must consider each layer of trap.This type of target resource amount size with distribution be by the stock number of each layer of trap distribute and oily probability try to achieve through Monte Carlo simulation.For sondage target plane comprising some traps, first symbolize each level Four trap oily probability and stock number distribution by risk analysis technology; Secondly determine according to each level Four trap oily probability and stock number distribution characteristics and prepare first level Four trap of boring; Finally the distribution of each level Four TRAP RESERVE and oily probability are calculated by Monte Carlo simulation and determine that first stock number of boring under level Four trap success conditions distributes all comprising.
Then carry out step S161, calculate the hydrocarbon-bearing pool reserves scale threshold value of preparatory reconnaissance borehole target.Hydrocarbon-bearing pool reserves scale threshold value refers to the hydrocarbon-bearing pool reserves scale when reaching specific exploration targets.Based on the difference of exploration targets, hydrocarbon-bearing pool reserves scale threshold value comprises multiple different type.In Reservoir Development and operation process, if after hydrocarbon-bearing pool operation, the hydrocarbon resources amount of output has just reached the lowest desired standard of exploitation side under prior art conditions, the reserves scale of so this hydrocarbon-bearing pool has been exactly the minimum mine reserves scale of this type of hydrocarbon-bearing pool.Be understood that, if the mining resources amount of hydrocarbon-bearing pool is less than minimum mine reserves scale, exploitation side does not consider to exploit this hydrocarbon-bearing pool so under prior art conditions.In the present embodiment, because final the selection result is as one of exploitation side's foundation formulating overall exploration targets.Therefore adopt minimum mine reserves scale as hydrocarbon-bearing pool reserves scale threshold value.
And then carry out step S160, based on the selection result of the second screening step (S150), carry out three screening.In step S160, based on mining resources amount with minimum mine reserves scale for threshold value to second screening the selection result screen.
Next carry out step S121, what obtain preparatory reconnaissance borehole target to be screened can exploitation scale.Be understood that, due to for different angles, different variablees can be adopted to carry out quantization signifying can exploitation scale.Therefore, before carrying out step S121, first will determine can the characteristic manner of exploitation scale.In the present embodiment, using the oil field output value obtained based on hydrocarbon resources amount (unit: unit) as unified variable unit quantize preparatory reconnaissance borehole target can exploitation scale.Be understood that, unit (unit) is herein just in order to the same quantization unit of convenience of calculation employing.In other embodiments of the present invention, other unit definition can be adopted to carry out unified quantization to each variable.
In step S121, first based on the mining resources amount of the preparatory reconnaissance borehole target obtained, that determines described preparatory reconnaissance borehole target to be screened can exploitation scale index.In the present embodiment, adopt the final oil field output value as quantize preparatory reconnaissance borehole target can exploitation scale can exploitation scale index.For Tarim Basin preparatory reconnaissance borehole, by 184.3 ten thousand tons, its mining resources amount oil, prediction exploitation well number and drilling well investment, petroleum operations cost value 289.01 yuan/ton, rock gas behaviour managerial cost value 95.97 yuan/ton, other fees value is 36.12 yuan/ton, oil price 3794 yuan/ton, and its final oil field output value is 46,291 ten thousand yuan.Can the index of exploitation scale using the final oil field output value of 46,291 ten thousand yuan as what quantize preparatory reconnaissance borehole target.
Then determine that correspondence can the scale coefficient of exploitation scale index based on the priority of preparatory reconnaissance borehole in oil company's general plan in conjunction with historical data.In the present embodiment, the scale coefficient value of area attribute to the corresponding and final oil field output value is drilled based on sondage target: new district assignment 0.8 ~ 1, old liberated area three frontier assignment 0.6 ~ 0.8, the non-three frontier assignment 0 ~ 0.6 in old liberated area.
In the present embodiment, can exploitation scale be preparatory reconnaissance borehole target to be screened can the product of exploitation scale index and corresponding scale coefficient.Therefore last in step S121, calculating can the product of exploitation scale index and scale coefficient, thus obtain preparatory reconnaissance borehole target can exploitation scale.Namely by calculating the product of the final oil field output value and scale coefficient, thus obtain preparatory reconnaissance borehole target can exploitation scale.
Meanwhile, the present invention can the basis of exploitation scale continue to introduce risk Severity Analysis in calculating.Next and then carry out step S130, calculate the development risk scale of preparatory reconnaissance borehole target to be screened.Development risk scale is for can exploitation scale after considering development risk.In the present embodiment, development risk scale by for the probing probability of success with can the product of exploitation scale.What development risk scale not only contained target can exploitation scale evaluation but also incorporated geologic risk and the engineering risk of target.In the present embodiment, development risk scale is can exploitation scale and the product drilling the probability of success.Still for Tarim Basin preparatory reconnaissance borehole.Its final oil field output value is 46291 (ten thousand yuan), scale coefficient value 0.6, then the two product is 27774; The preparatory reconnaissance borehole probability of success 0.4, then 27774 and 0.4 product 11109 is its development risk scale.
Then carry out step S171, the expection calculating preparatory reconnaissance borehole target can exploitation scale.In the present embodiment, expection can exploitation scale be the product that the product of the preparatory reconnaissance borehole probability of success and the final oil field output value deducts probability of failure and investments.
Next carry out step S170, the second screening is carried out to the selection result of three screening.In reality probing, if preparatory reconnaissance borehole expection can be greater than zero by exploitation scale, show that this type of target probing development risk is relatively little.If drill this type of target numerous development goal can be reached on the whole especially more than 100 affirmatives, but development goal can be reached after the probing of each target can not be ensured.If expection can be less than zero by exploitation scale, show that this type of target probing development risk is relatively large, if drill this type of target numerous cannot reach development goal on the whole especially more than 100 affirmatives, but not cannot reach development goal after saying the probing of each target.
The present embodiment is by setting up two dimensional model to implement the second screening process.As shown in Figure 2, setting up expection can exploitation scale-development risk scale two dimensional model, and ordinate is that expection can exploitation scale value, and horizontal ordinate is development risk scale.For four quadrants that longitudinal and transverse coordinate axis divides, the present embodiment first-selection is positioned at the preparatory reconnaissance borehole target (i.e. expection can exploitation scale, development risk scale be all greater than zero) of first quartile.Certainly, as company accept the risk ability larger time also preferably small part can be positioned at the large preparatory reconnaissance borehole target (expection can exploitation scale be less than zero but development risk is larger) of fourth quadrant, namely the minus well of the oil field output value that in principle can not be preferably final is that probing finds that oil gas is still without economic benefit.
Next the present embodiment determines the threshold value (S131) of the development risk scale of screening according to practical factors such as exploration targetss.The threshold value of development risk scale is determined according to the concrete Development Strategy of company.
Then on the basis of the 4th screening, carry out step S140, the first screening is carried out to the selection result of the 4th screening.In step S140, the threshold value of the development risk scale that the development risk scale of the preparatory reconnaissance borehole target obtained based on step S130 obtains according to step S131 is screened, thus filters out the preparatory reconnaissance borehole target meeting development requires.Preparatory reconnaissance borehole object filtering method of the present invention determines unified screening process, substantially increases operability and the practicality of screening technique.Preparatory reconnaissance borehole object filtering method of the present invention decreases the impact of artificial subjective factor in screening process to greatest extent simultaneously, the selection result more accurately and reliably, the direction disposed for oily company preparatory reconnaissance borehole and order are determined, optimize exploration investment, the plan of developing planning provides more reliable foundation.
For the screening of Tarim Basin preparatory reconnaissance borehole.Set up shown in Fig. 3 and be " the preparatory reconnaissance borehole probing probability of success-can exploitation scale " two dimensional model.Ordinate is the probing probability of success, and horizontal ordinate is can exploitation scale.Determine upper drilling well number 6 mouthfuls based on exploration targets, the threshold value calculated for screening development risk scale is 1650 (ten thousand yuan).Due to development risk scale be can exploitation scale with probing the probability of success product.Therefore the threshold value of development risk scale exists " the preparatory reconnaissance borehole probing probability of success-can exploitation scale " coordinate system on show as a camber line.In screening process, as shown in phantom in Figure 3, on coordinate system, threshold value camber line is drawn according to the threshold value 1650 of development risk scale.Even if the top-right preparatory reconnaissance borehole target of camber line meets the target that screening requires, therefore preferential probing is positioned at top-right No. 1 of camber line, No. 2, No. 4, No. 5, No. 8, No. 9 preparatory reconnaissance boreholes.
In the present embodiment, in order to make last the selection result be more convenient for using.The method of the present embodiment also comprises step S180, ordered steps.In step S180, according to development risk scale to step S140 the selection result sort.
In some cases, oil company directly can not determine the threshold value of development risk scale, and just determines final the selection result quantity.Be understood that, in the case, only first need perform step S180 and according to the size of development risk scale, preparatory reconnaissance borehole target to be screened be sorted, then choose preparatory reconnaissance borehole target to be screened successively, until obtain the preparatory reconnaissance borehole target of enough numbers.Now the development risk scale of last preparatory reconnaissance borehole target chosen just is equivalent to the threshold value of development risk scale.Such as certain company expects invests 5 mouthfuls of prospect pits, and according to all preparatory reconnaissance borehole targets to be screened of development risk scale sequence, the development risk scale of the 5th mouthful of preparatory reconnaissance borehole target is the threshold value of screening.
Although embodiment disclosed in this invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Method of the present invention also can have other various embodiments.When not deviating from essence of the present invention, those of ordinary skill in the art are when making various corresponding change or distortion according to the present invention, but these change accordingly or are out of shape the protection domain that all should belong to claim of the present invention.
Claims (10)
1. screen an oil gas preparatory reconnaissance borehole order calibration method, it is characterized in that, described method comprises following steps:
Data acquisition step, obtains the probing probability of success and the mining resources amount of preparatory reconnaissance borehole target to be screened;
Obtain development risk scale step, obtain described preparatory reconnaissance borehole target developing risk scale to be screened based on the described probing probability of success and described mining resources amount;
Threshold value obtaining step, determines the threshold value of described development risk scale based on exploration targets;
First screening step, the threshold value according to described development risk scale is screened, thus filters out preparatory reconnaissance borehole target.
2. the method for claim 1, is characterized in that, in described data acquisition step, calculates the described probing probability of success according to the geologic risk of described preparatory reconnaissance borehole target to be screened and engineering risk.
3. method as claimed in claim 2, it is characterized in that, in described data acquisition step, described geologic risk comprises the oily probability of described preparatory reconnaissance borehole target to be screened.
4. the method for claim 1, is characterized in that, described acquisition development risk scale step comprises:
Based on described mining resources amount determine described preparatory reconnaissance borehole target to be screened can exploitation scale index;
The scale coefficient of described preparatory reconnaissance borehole target to be screened is determined based on exploration targets;
According to described can preparatory reconnaissance borehole target to be screened described in exploitation scale index and described scale coefficient calculations can exploitation scale;
According to the described probing probability of success and describedly can obtain described development risk scale by exploitation scale.
5. method as claimed in claim 4, is characterized in that, in described data acquisition step, described can exploitation scale be described can the product of exploitation scale index and described scale coefficient.
6. the method for claim 1, is characterized in that, described method also comprises the second screening step, screens described preparatory reconnaissance borehole target to be screened specifically to drill the probability of success for threshold value.
7. method as claimed in claim 6, it is characterized in that, described method also comprises three screening step, and wherein, described three screening step comprises the following steps:
Determine the hydrocarbon-bearing pool reserves scale threshold value of described preparatory reconnaissance borehole target to be screened;
Described preparatory reconnaissance borehole target to be screened is screened according to described hydrocarbon-bearing pool reserves scale threshold value based on described mining resources amount.
8. method as claimed in claim 7, is characterized in that, described method also comprises the 4th screening step, and wherein, described 4th screening step comprises the following steps:
The expection calculating described preparatory reconnaissance borehole target to be screened can exploitation scale;
Exploitation scale and described development risk scale described preparatory reconnaissance borehole target to be screened can be screened based on described expection.
9. method as claimed in claim 8, it is characterized in that, described three screening step is carried out on the basis of described second screening step, the basis of described three screening step is carried out described 4th screening step, the basis of described 4th screening step is carried out described first screening step.
10. method as claimed in any one of claims 1-9 wherein, it is characterized in that, described method also comprises ordered steps, sorts according to the selection result of described development risk scale to described first screening.
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| CN110490436A (en) * | 2019-07-31 | 2019-11-22 | 中国地质科学院地质力学研究所 | A kind of petroleum resources amount evaluation method and evaluation system |
| CN110469318A (en) * | 2019-08-13 | 2019-11-19 | 中海石油(中国)有限公司 | Determination method of the ultra-deep-water oil field in exploratory period economic development minimum recoverable reserves scale |
| CN110469318B (en) * | 2019-08-13 | 2023-01-24 | 中海石油(中国)有限公司 | Method for determining minimum recoverable reserve scale of economic development of ultra-deep water oil field in exploration period |
| CN112287295A (en) * | 2020-09-17 | 2021-01-29 | 中国石油天然气股份有限公司 | Method and device for evaluating exploration potential and readable storage medium |
| CN112287295B (en) * | 2020-09-17 | 2023-12-22 | 中国石油天然气股份有限公司 | Method and device for evaluating exploration potential and readable storage medium |
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