CN110080743B - Oil well potential detection method - Google Patents
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- 239000010779 crude oil Substances 0.000 claims description 34
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- 239000003345 natural gas Substances 0.000 claims description 23
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 19
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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Abstract
The invention provides a method for detecting the potential of an oil well. The method of the invention carries out comprehensive scoring on the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well, and compares the scoring with the standard score, thereby judging whether the target oil well has the potential of continuous and stable production. The method provided by the invention carries out quantitative analysis and evaluation on various indexes influencing the potential of the oil well, can accurately judge whether the target oil well has the potential according to the obtained final evaluation result, has strong operability in actual production, and has high success rate of the recovery of the potential oil well after judgment.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a method for detecting the potential of an oil well.
Background
The stable production of an oil well can be seriously influenced under the condition that the water content of the produced oil or the produced oil is higher. However, when the above problems occur in an oil well, it is not necessarily said that the reservoir at the bottom of the oil well is not filled with crude oil, and the problems may be caused by deviation of understanding of oil-water relationship before drilling or change of relative position relationship between the oil-water interface and the well bottom during production, and therefore, it is necessary to analyze potential of the oil well with the problems, and detect whether the oil well has potential for continuing stable production.
In the prior art, the potential of the oil well is mainly detected by performing drainage operation on an oil well with high water content in produced water or crude oil, recovering production after a certain amount of water in the oil well is discharged, and checking the production state at the moment. If normal production is recovered, judging that the oil well has the potential of continuing stable production; and if the normal production can not be recovered, judging that the oil well does not have the potential of continuing stable production.
However, the detection method in the prior art has incomplete judgment basis and poor accuracy of the judgment result.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the oil well potential detection method, which can accurately judge the potential of a target oil well and has strong operability in actual production.
The invention provides an oil well potential detection method, which comprises the following steps:
obtaining an output of a target oil well mouth, and detecting the output;
wherein the detecting of the output comprises: detecting the content of hydrogen sulfide, the content of crude oil, the content of natural gas and the energy of water;
acquiring historical data of a target oil well;
wherein the historical data comprises: relative position of oil well, logging oil layer and oil well reservoir size;
acquiring the adjacent well production state of a target oil well;
wherein the adjacent well production status comprises: the adjacent well accumulates oil production;
performing comprehensive scoring on the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well; and comparing the comprehensive score with a standard score to judge whether the target oil well has the potential of continuing stable production.
Optionally, the method for determining the target oil well includes:
collecting produced liquid of an oil well mouth, and judging the water content of the produced liquid;
if the water content of the output liquid is more than or equal to 70%, the oil well is a target oil well;
and if the water content of the output liquid is less than 70%, the oil well is not a target oil well.
The method for detecting the potential of the oil well as the above, optionally, the method for detecting the content of the hydrogen sulfide comprises: and detecting the product by using a hydrogen sulfide detector to obtain the content of the hydrogen sulfide in the product.
The method for detecting the potential of the oil well can be selected from the following methods: and carrying out crude oil component detection on the collected product to obtain a detection result.
The method for detecting the potential of the oil well can be selected from the following steps: judging whether natural gas exists or not by igniting gas components in the product;
wherein, if the gas component in the product can be ignited, the natural gas is judged to exist;
and if the gas component in the product can not be ignited, judging that no natural gas exists.
The method for detecting the potential of the oil well optionally comprises the following steps: and judging the water body energy of the target oil well according to the unit pressure drop water yield of the target oil well or a water content curve in the production process.
Optionally, the method for determining the well potential includes: measuring gamma, resistivity and sonic moveout of different formations in the target well by a logging tool;
if the gamma and the resistivity of a certain stratum are lower than those of the bottom layer adjacent to the stratum, and the acoustic wave time difference is higher, the stratum is an oil layer.
The method for detecting the potential of the oil well as the above, optionally, the method for judging the size of the oil well reservoir is as follows: and judging the size of the reservoir body of the target oil well through the seismic carving pattern or the dynamic reserve of the target oil well.
The method for detecting the potential of the oil well as the above, optionally, the relative positions of the oil wells refer to: the vertical distance between the bottom position of the oil well and the highest position of the oil well structure;
wherein the well bottom location is obtained from drilling data;
the method for obtaining the position of the highest position of the oil well structure comprises the following steps: the method comprises the steps that earthquake waves are emitted to a stratum by manufacturing artificial micro earthquakes, the earthquake waves can present different emitted waves at different stratum interfaces, the depths of the stratum at different positions can be obtained through calculation after the earth receives reflected waves, and the minimum value in the depths of the stratum is the position of the highest position of the oil well structure.
Optionally, the method for comprehensively scoring the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well comprises:
and calculating the comprehensive score according to the preset detection result of the output, the historical data, the scores of the production states of the adjacent wells and the weight values of the production states of the adjacent wells, wherein the comprehensive score is the sum of the products of the scores of all the parameters and the weight values.
The oil well potential detection method provided by the invention carries out comprehensive scoring on the target oil well according to the detection result, the historical data and the production state of the adjacent well of the output, and compares the scoring with the standard score so as to judge whether the target oil well has the potential of continuous and stable production. The method provided by the invention carries out quantitative analysis and evaluation on various indexes influencing the potential of the oil well, can accurately judge whether the target oil well has the potential according to the obtained final evaluation result, has strong operability in actual production, and has high success rate of the recovery of the potential oil well after judgment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting potential of an oil well according to an embodiment of the present invention.
FIGS. 2(a) to 2(c) are graphs showing water content in different processes.
FIG. 3 is a schematic representation of the relative positions of wells in the present invention.
Reference numerals:
1-oil well.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the terms "first" and "second" in the description of the present invention are used merely for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Petroleum is a complex mixture consisting of gaseous, liquid and solid hydrocarbons present in nature, as well as small amounts of impurities. Hydrocarbons are present in a dispersed state in a raw hydrocarbon reservoir after formation of the earth's crust and subsequently migrate into the reservoir and accumulate in a geologic formation with good storage conditions to form a reservoir. Oil recovery is the process of excavating and extracting oil in a reservoir where the oil is stored, the reservoir having a storage space that allows the flow of oil and gas therethrough, the reservoir space including the pores between rock fragments, fractures in rock fractures, cavities formed by erosion, etc., the size, distribution and communication of the voids in the reservoir space affecting the flow of oil and gas, thereby determining the characteristics of oil and gas recovery.
During oil extraction, oil and gas generally flow from a reservoir to the bottom of a well, then rise from the bottom of the well to the top of the well, then flow from the top of the well to an oil gathering station, and after separation and dehydration, the oil and gas flow to an oil and gas transmission main station and are output to a mining area.
Oil recovery can be roughly divided into three phases:
the primary oil recovery usually depends on natural energy such as rock expansion, edge water drive, gravity, natural gas expansion and the like for exploitation, and the natural energy is mainly utilized in the stage to enable oil in an oil reservoir to be lifted to the outside of a well through an oil pipe; however, as the production of crude oil and natural gas continues, the volume of fluid in reservoir rocks and formations gradually expands, elastic energy is gradually released, and the recovery rate of oil at this stage is only 15-20% on average.
The secondary oil recovery mainly improves the pressure of an oil layer through modes of water injection, gas injection and the like, so that the oil well can continue to produce oil after the jet of the oil well is stopped. The water injection exploitation is to inject water into the oil reservoir through a special injection well to maintain or restore the pressure of the oil layer, so that the oil reservoir forms stronger driving force to improve the exploitation rate and the recovery ratio of the oil reservoir; the gas injection exploitation mainly utilizes the effects of viscosity reduction, expansion, miscible phase, molecular diffusion and the like of injected gas to reduce interfacial tension and improve permeability, thereby improving the oil recovery rate of an oil field. Because of the heterogeneity of the formation, the injected fluid generally flows to the well along a path of lesser resistance, while the oil in the relatively more resistant areas, and some of the oil adsorbed by the rock, remains unexplored and the recovery from the secondary recovery phase remains limited.
The tertiary oil recovery mainly changes the viscosity and the adsorbability of crude oil to rocks by adopting various physical and chemical methods, thereby increasing the flowing capacity of the crude oil and further improving the recovery ratio of the crude oil. The tertiary oil recovery method mainly comprises a thermal oil recovery method, a chemical oil displacement method, a miscible phase oil displacement method, a microbial oil displacement method and the like. The thermal oil recovery method mainly utilizes a mode of reducing the viscosity of crude oil to improve the recovery ratio, wherein steam huff and puff is a common thermal oil recovery method, and a certain amount of steam is injected into an oil well and the heat energy of the steam is diffused to an oil layer, so that the viscosity of the crude oil is greatly reduced, and the flowing capacity of the crude oil is improved; the chemical oil displacement method is mainly characterized in that a chemical agent is injected to increase the viscosity of formation water, change the viscosity ratio of crude oil and formation water, reduce the difference between the flowing capacity of water and the flowing capacity of oil in the formation and reduce the adsorbability of the crude oil to rocks so as to improve the oil displacement efficiency; the miscible-phase oil displacement method mainly reduces the viscosity of crude oil and the adsorbability to rocks by injecting natural gas, carbon dioxide and other gases into the crude oil to generate miscible phase; the microbe oil displacement method is to crack heavy hydrocarbon and paraffin wax with microbe and its metabolite to change the macromolecule of petroleum into small molecule and to metabolize to produce gas soluble in crude oil, so as to reduce the viscosity of crude oil and increase the flowability of crude oil, and to raise the recovery rate of crude oil.
The stable production of an oil well can be seriously influenced under the condition that the water content of the produced oil or the produced oil is higher. However, when the above problems occur in an oil well, it is not necessarily said that the reservoir at the bottom of the oil well is not filled with crude oil, and the problems may be caused by deviation of understanding of oil-water relationship before drilling or change of relative position relationship between the oil-water interface and the well bottom during production, and therefore, it is necessary to analyze potential of the oil well with the problems, and detect whether the oil well has potential for continuing stable production.
In the prior art, the potential of the oil well is mainly detected by performing drainage operation on an oil well with high water content in produced water or crude oil, recovering production after a certain amount of water in the oil well is discharged, and checking the production state at the moment. If normal production is recovered, judging that the oil well has the potential of continuing stable production; and if the normal production can not be recovered, judging that the oil well does not have the potential of continuing stable production.
However, the detection method in the prior art has incomplete judgment basis and poor accuracy of the judgment result.
The present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can more fully understand the present invention.
FIG. 1 is a flow chart of a method for detecting well potential provided by an embodiment of the present invention; please refer to fig. 1. The embodiment provides an oil well potential detection method, which comprises the following steps:
obtaining an output of a target oil well mouth, and detecting the output;
wherein the detecting of the output comprises: detecting the content of hydrogen sulfide, the content of crude oil, the content of natural gas and the energy of water;
acquiring historical data of a target oil well;
wherein the historical data comprises: relative position of oil well, logging oil layer and oil well reservoir size;
acquiring the adjacent well production state of a target oil well;
wherein the adjacent well production status comprises: the adjacent well accumulates oil production;
performing comprehensive scoring on the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well; and comparing the comprehensive score with a standard score to judge whether the target oil well has the potential of continuing stable production.
Optionally, the method for performing comprehensive scoring on the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well may be:
and calculating the comprehensive score according to the preset detection result of the output, the historical data, the scores of the production states of the adjacent wells and the weight values of the production states of the adjacent wells, wherein the comprehensive score is the sum of the products of the scores of all the parameters and the weight values.
The weight values and the score values of the indexes can be set according to actual conditions, and the standard scores can also be set according to needs, which is not further limited in this embodiment.
For example, in an alternative embodiment, different fractions of hydrogen sulfide content between 0 and 10 points can be respectively given according to actual conditions, and the total weight value of the hydrogen sulfide content is given as 0.15; giving different fractions of crude oil with the content of 0-10, and giving the weight value of the crude oil accounting for the total fraction of 0.25; giving different fractions of the natural gas with the content of 0-10, and giving the weight value of the natural gas accounting for the total fraction of 0.2; giving different scores between 0 and 10 to the water body energy, and giving a weight value of the total score to the water body energy to be 0.12; giving different scores between 0 and 10 to the relative positions of the oil wells, and giving a weight value of 0.1 to the total score; giving different scores between 0 and 10 to the logging oil layer, and giving a weight value of 0.08 to the logging oil layer in the total score; giving different scores between 0 and 10 to the oil well reservoir body scale, and giving a weight value of 0.06 to the oil well reservoir body in the total score; and giving different fractions of the adjacent wells with the accumulated oil quantity of 0-10, and giving the adjacent wells with a weight value of 0.04 in the total fraction. The specific scores and their weighted value correspondences of the above items are shown in table 1 below. Setting a standard score of 6, and when the comprehensive score of each item is greater than 6, considering that the target oil well has the potential of stable production and is worthy of further drainage operation so as to enable the target oil well to be produced again as soon as possible; when the comprehensive score of each item is less than 6 minutes, the target oil well is considered to have no potential of stable production, and further drainage operation is not needed to be carried out on the target oil well, so that manpower and material resources are saved.
TABLE 1
According to the oil well potential detection method provided by the embodiment, the target oil well is comprehensively scored according to the detection result of the output, the historical data and the production state of the adjacent well, and the score is compared with the standard score, so that whether the target oil well has the potential of continuing stable production or not is judged. The method of the embodiment quantitatively analyzes and evaluates various indexes influencing the potential of the oil well, can accurately judge whether the target oil well has the potential according to the obtained final evaluation result, has strong operability in actual production, and has high success rate of the recovery of the potential oil well after the judgment.
Optionally, the method for judging the target oil well comprises the following steps:
collecting produced liquid of an oil well mouth, and judging the water content of the produced liquid;
if the water content of the output liquid is more than or equal to 70%, the oil well is a target oil well;
and if the water content of the output liquid is less than 70%, the oil well is not a target oil well.
Specifically, if the water content in the oil well output liquid is more than 70%, the oil well is a high water content oil well, and at this time, the oil well needs to be subjected to further potential judgment to find out the reason that the water content of the oil well output liquid is high.
Optionally, the method for detecting the content of hydrogen sulfide comprises: and detecting the product by using a hydrogen sulfide detector to obtain the content of the hydrogen sulfide in the product.
The hydrogen sulfide detector is a device which is commonly used in production and is used for measuring the content of hydrogen sulfide, can display the content of hydrogen sulfide in a measured object in real time, can visually display the content in a data form, and is convenient for a tester to record.
Optionally, the method for detecting the crude oil content comprises the following steps: and carrying out crude oil component detection on the collected product to obtain a detection result.
The crude oil component detection of the product generally needs to send the product to a professional laboratory for detection, and the detection result has high reliability. However, in production, whether the product contains crude oil or not can be detected by an intuitive judgment method, and the product is generally judged to contain crude oil components when black fluid or whole black liquid exists in the product.
Optionally, the method for detecting the content of the natural gas comprises the following steps: judging whether natural gas exists or not by igniting gas components in the product;
wherein, if the gas component in the product can be ignited, the natural gas is judged to exist;
and if the gas component in the product can not be ignited, judging that no natural gas exists.
The ignition of the gas can be directly carried out at the gas outlet of the product, and if the ignition is carried out and the continuous combustion is ensured after the ignition, the natural gas is proved to be contained in the gas of the product.
Optionally, the method for detecting water body energy includes: and judging the water body energy of the target oil well according to the unit pressure drop water yield of the target oil well or a water content curve in the production process.
Specifically, the detection of the water body energy can be performed according to the specific conditions of the oil well.
For example, the water production per pressure drop can be used for the test well. The calculation formula of unit pressure drop water yield delta is as follows: δ is Q/Δ P; wherein Q is the stage water yield, and Δ P is the stage pressure drop, i.e., Δ P is the difference between the initial oil pressure P1 and the current oil pressure P2. The unit of the unit pressure drop water yield delta is m3and/MPa, the larger the water yield per pressure drop is, the larger the energy of the water body is, and vice versa.
The judgment of the oil well which is put into production can be carried out according to the water content curve chart in the production process. FIGS. 2(a) -2 (c) are graphs of water content in different production processes; please refer to fig. 2(a) -2 (c). The function rate graph of the oil well in the production process is generally divided into three types, namely a fluctuation type as shown in fig. 2(a), and the water content of the fluctuation type is gradually increased and decreased; the sudden flooding type shown in fig. 2(b) has a water content directly changed from low water content or no water content to full water content; the water content of the step rises as shown in FIG. 2(c), and then it changes from no water or low water content to medium water content, and then it is maintained for a while, and then it changes from medium water content to high water content, and then it is maintained for a while, and finally it becomes full water. The energy of the three types of water content graphs are sorted into an explosive water logging type, a fluctuation type and a step ascending type.
Optionally, the method for judging the logging oil layer comprises the following steps: measuring gamma, resistivity and sonic moveout of different formations in the target well by a logging tool;
if the gamma and the resistivity of a certain stratum are lower than those of the bottom layer adjacent to the stratum, and the acoustic wave time difference is higher, the stratum is an oil layer.
In particular, this step may be performed after drilling is completed, and the measurements may be stored for later use.
Optionally, the method for judging the size of the oil well reservoir body comprises the following steps: and judging the size of the reservoir body of the target oil well through the seismic carving pattern or the dynamic reserve of the target oil well.
Specifically, the judgment of the size of the oil well reservoir can be carried out according to the specific condition of the oil well.
For example, the oil well testing can be judged by the earthquake carving pattern of the oil well, and the earthquake carving pattern is favorable when the earthquake carving pattern is a large-scale fracture-cave aggregate and unfavorable when the earthquake carving pattern is a single bead.
For the oil well which is put into production, the judgment can be carried out according to the dynamic reserves of the oil well, wherein the dynamic reserves can be estimated by professional personnel, specifically, the dynamic reserves can be divided into four standards of the dynamic reserves of more than 20 ten thousand tons, 10-20 ten thousand tons, 5-10 ten thousand tons and less than 5 ten thousand tons, and the larger the dynamic reserves, the more favorable the dynamic reserves are proved.
Optionally, the relative position of the oil well is as follows: the vertical distance between the bottom position of the oil well and the highest position of the oil well structure, the judgment of the relative position of the oil well is carried out on a geological profile, and FIG. 3 is a schematic diagram of the relative position of the oil well in the invention; please refer to fig. 3.
Wherein the bottom hole position of the oil well 1 is obtained by drilling data before production;
the method for obtaining the position of the highest structure of the oil well 1 comprises the following steps: the method comprises the steps that earthquake waves are emitted to the stratum by manufacturing artificial micro earthquakes, the earthquake waves can present different emission waves at different stratum interfaces, the depths of the stratum at different positions can be obtained through calculation after the reflection waves are received on the ground, and the minimum value in the depths of the stratum is the position of the highest position of the oil well 1 structure. The obtained stratum depths of different positions are constructed into pictures as shown in figure 3, and the distance d between the bottom hole position and the highest position of the oil well 1 in the pictures is the relative position of the oil well.
The accumulated oil production of the adjacent well refers to the total oil production of the adjacent well from production to production, in the embodiment, 5000 tons is taken as a critical point, the condition that more than 5000 tons is favorable is adopted, and the condition that less than 5000 tons is unfavorable is adopted.
The following provides examples of the determination of well potential using the above-described determination method to make the method of the present invention more understandable.
Example one
And measuring the water content of the output liquid of a certain put-into-production oil well to be 82% and more than 70%, and determining the oil well as a target oil well for potential detection. The data of the accumulated oil yield of the adjacent well is transferred to display that the accumulated oil yield of the adjacent well of the target oil well is 6221 tons, the historical data of the oil well is transferred to obtain the relative position of the oil well as 32m, a well-logging oil layer is arranged, the dynamic reserve of the oil well is 12 ten thousand tons, and through further measurement of the produced product, the hydrogen sulfide content of the oil well is 23ppm, the produced product contains crude oil, no natural gas component and water body energy is in an explosive water flooding type.
The comprehensive score is 6.44 points and is 6 points greater than the preset standard score by calculation, and the potential of stable production is proved. After the subsequent drainage operation, the oil well can be successfully produced again.
Example two
And measuring the water content of the output liquid of a certain put-into-production oil well to be 94 percent and more than 70 percent, and then determining the oil well as a target oil well for potential detection. The data of the accumulated oil yield of the adjacent well is transferred to display that the accumulated oil yield of the adjacent well of the target oil well is 3251 tons, the historical data of the oil well is transferred to obtain the relative position of the oil well as the relative position of the oil well is 62m, a well-logging oil layer exists, the dynamic reserve of the oil well is 8 ten thousand tons, and through further measurement of the output, the hydrogen sulfide content of the output is 16ppm, the output has crude oil, no natural gas component and water energy is of a step ascending type.
The comprehensive score is 5.62 points and is less than the preset standard score of 6 points by calculation, which proves that the potential of stable production is not available, so that subsequent operation is not needed to reduce the production cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for detecting potential of an oil well, comprising:
obtaining an output of a target oil well mouth, and detecting the output;
wherein the detecting of the output comprises: detecting the content of hydrogen sulfide, the content of crude oil, the content of natural gas and the energy of water;
acquiring historical data of a target oil well;
wherein the historical data comprises: relative position of oil well, logging oil layer and oil well reservoir size; the relative positions of the oil wells are as follows: the vertical distance between the bottom position of the oil well and the highest position of the oil well structure;
acquiring the adjacent well production state of a target oil well;
wherein the adjacent well production status comprises: the adjacent well accumulates oil production;
performing comprehensive scoring on the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well; comparing the comprehensive score with a standard score, and judging whether the target oil well has the potential of continuing stable production;
the method for judging the logging oil layer comprises the following steps: measuring gamma, resistivity and sonic moveout of different formations in the target well by a logging tool;
if the gamma and the resistivity of a certain stratum are lower than those of the bottom layer adjacent to the stratum, and the acoustic wave time difference is higher, the stratum is an oil layer;
the method for comprehensively scoring the target oil well according to the detection result of the output, the historical data and the production state of the adjacent well comprises the following steps:
and calculating the comprehensive score according to the preset detection result of the output, the historical data, the scores of the production states of the adjacent wells and the weight values of the production states of the adjacent wells, wherein the comprehensive score is the sum of the products of the scores of all the parameters and the weight values.
2. The method for detecting the potential of the oil well as defined in claim 1, wherein the method for judging the target oil well comprises the following steps:
collecting produced liquid of an oil well mouth, and judging the water content of the produced liquid;
if the water content of the output liquid is more than or equal to 70%, the oil well is a target oil well;
and if the water content of the output liquid is less than 70%, the oil well is not a target oil well.
3. The well potential detection method of claim 1, wherein the method for detecting the hydrogen sulfide content is: and detecting the product by using a hydrogen sulfide detector to obtain the content of the hydrogen sulfide in the product.
4. The method for detecting the potential of the oil well as the method for detecting the crude oil content of the oil well as the method for detecting the potential of the oil well are as follows: and carrying out crude oil component detection on the collected product to obtain a detection result.
5. The method for detecting the potential of the oil well as the method for detecting the content of the natural gas in the oil well, according to the claim 1, is characterized in that the method for detecting the content of the natural gas comprises the following steps: judging whether natural gas exists or not by igniting gas components in the product;
wherein, if the gas component in the product can be ignited, the natural gas is judged to exist;
and if the gas component in the product can not be ignited, judging that no natural gas exists.
6. The method for detecting the potential of the oil well as the method for detecting the energy of the water body, which is described in claim 1, is as follows: and judging the water body energy of the target oil well according to the unit pressure drop water yield of the target oil well or a water content curve in the production process.
7. The well potential testing method of claim 1, wherein the method for determining the size of the well reservoir is: and judging the size of the reservoir body of the target oil well through the seismic carving pattern or the dynamic reserve of the target oil well.
8. The well potential testing method of claim 1,
the bottom hole position of the oil well is obtained through drilling data;
the method for obtaining the position of the highest position of the oil well structure comprises the following steps: the method comprises the steps that earthquake waves are emitted to a stratum by manufacturing artificial micro earthquakes, the earthquake waves can present different emitted waves at different stratum interfaces, the depths of the stratum at different positions can be obtained through calculation after the earth receives reflected waves, and the minimum value in the depths of the stratum is the position of the highest position of the oil well structure.
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