CN110886605A - Method and device for recovering yield of pump detection well - Google Patents
Method and device for recovering yield of pump detection well Download PDFInfo
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- CN110886605A CN110886605A CN201811054066.3A CN201811054066A CN110886605A CN 110886605 A CN110886605 A CN 110886605A CN 201811054066 A CN201811054066 A CN 201811054066A CN 110886605 A CN110886605 A CN 110886605A
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- recovery period
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention discloses a method and a device for recovering the output of a pump detection well, belonging to the technical field of oil extraction engineering in the petroleum industry. The method comprises the following steps: determining a pump detection well distribution area with an excavation space in an oil field area based on a pump detection well influence factor database; determining the application effect of the oil discharge pipe column on the recovery period duration of the pump well; and when the next pump detection operation is carried out, recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well. The method can pertinently determine the pump detecting well distribution area with the excavation space based on the pump detecting well influence factor database, and further recover the pump detecting well distribution area with the excavation space by adopting the oil drainage pipe column. Because a rock core experiment is not needed, the cost is reduced, the specific fault block is not targeted, the application range is wide, and the determined influence factors are more accurate.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering in the petroleum industry, in particular to a method and a device for recovering the output of a pump detection well.
Background
When the pump operation is examined to the oil well, in order to ensure well control safety and satisfy the requirement of clean production, need wash partial oil well, however because when washing the oil well or washing sand, often can produce certain scouring action to the oil reservoir that is close to the oil well area for the liquid water content of exploiting out is higher, and after a period of time's flowing back was handled, oil well output and liquid water content could recover gradually. If the oil well subjected to pump detection operation is called a pump detection well, in order to shorten the recovery period of the pump detection well and better protect a reservoir, the influence factors of the recovery period of the pump detection well can be determined, and an effective solution is further adopted to recover the yield of the pump detection well.
At present, when the output of a pump well is recovered, a core experiment is mainly adopted to obtain a core from a reservoir, and water sensitivity, acid sensitivity, speed sensitivity and other experiments are carried out in a laboratory, so that influence factors of the recovery period of the pump well are determined, and corresponding measures are adopted for recovering the output of the pump well according to the determined influence factors.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the core experiment is adopted to obtain the core from the reservoir, the cost is high, the experiment is only carried out on partial fault blocks, the large-scale experiment cannot be carried out, and the determined influence factors are inaccurate.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a method and a device for recovering the yield of a pump detection well. The technical scheme is as follows:
in one aspect, there is provided a method of restoring production to a pump well, the method comprising:
when the oil well in the oil field area is subjected to pump detection operation, a pump detection well influence factor database is established, wherein the pump detection well influence factor database comprises various data collected in the recovery period of each pump detection well, and each data corresponds to one influence factor;
determining a pump detection well distribution area with an excavation space in the oil field area based on the pump detection well influence factor database, wherein the pump detection well distribution area with the excavation space comprises a target pump detection well of which the recovery period duration exceeds a preset duration;
determining the application effect of the oil drainage pipe column on the recovery period duration of the pump detection well based on the recovery period duration of the pump detection well in the pump detection well influence factor database and the application condition of the oil drainage pipe column;
and when the next pump detection operation is carried out, recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well.
In another embodiment of the present invention, the determining a distribution area of the pump wells having an excavation space in the oilfield region based on the database of pump well influence factors comprises:
determining an accumulated frequency chart of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database, wherein the accumulated frequency chart is used for representing the frequency of the pump detecting well corresponding to different recovery period durations;
determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well;
determining the standard time length of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well;
and determining the area where the pump detecting wells with the recovery period duration being longer than the standard recovery period duration in the oilfield area as the pump detecting well distribution area with the excavation space.
In another embodiment of the present invention, the determining a distribution area of the pump wells having an excavation space in the oilfield region based on the database of pump well influence factors comprises:
acquiring various data of each pump detection well recovery period in each sub-block from the pump detection well influence factor database according to the sub-blocks divided for the oil field area in advance;
drawing a pareto chart corresponding to each sub-block based on various data of each pump detection well recovery period in each sub-block, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period;
and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
In another embodiment of the present invention, the recovering the yield of each target pump inspection well in the pump inspection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump inspection well at the next pump inspection operation includes:
when the recovery period of the oil drainage pipe column can be shortened, and the next pump detection operation is carried out, for any target pump detection well, if the target pump detection well does not use the oil drainage pipe column, the oil drainage pipe column is adopted to recover the yield of the target pump detection well;
and if the target inspection pump well uses a drainage pipe column, the yield of the target inspection pump well is recovered by adding chemicals to the target inspection pump well.
In another embodiment of the present invention, the method further comprises:
drawing a relation curve between each factor and the recovery period duration based on various data in the pump detecting well influence factor database;
determining whether each factor influences the recovery period duration according to a relation curve of each factor and the recovery period duration;
and if any factor has no influence on the recovery period, ignoring data corresponding to the factor when recovering the output of the pump detecting well in other oil and gas areas.
In another aspect, there is provided an apparatus for restoring production from a pump well, the apparatus comprising:
the system comprises a database establishing module, a data processing module and a data processing module, wherein the database establishing module is used for establishing a pump detection well influence factor database when the pump detection operation is carried out on an oil well in an oil field area, the pump detection well influence factor database comprises various data collected in each pump detection well recovery period, and each data corresponds to an influence factor;
the determining module is used for determining a pump detection well distribution region with an excavation space in the oil field region based on the pump detection well influence factor database, wherein the pump detection well distribution region with the excavation space comprises a target pump detection well of which the recovery period duration exceeds a preset duration;
the determining module is used for determining the application effect of the oil drainage pipe column on the recovery period duration of the pump detection well based on the recovery period duration of the pump detection well in the pump detection well influence factor database and the application condition of the oil drainage pipe column;
and the yield recovery module is used for recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well when the pump detection operation is performed next time.
In another embodiment of the present invention, the determining module is configured to determine an accumulated frequency map of the recovery period of the pump detection well according to the pump detection well and the recovery period duration thereof in the pump detection well influence factor database, where the accumulated frequency map is used to represent frequency numbers of the pump detection well corresponding to different recovery period durations; determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well; determining the standard time length of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well; and determining the area where the pump detecting wells with the recovery period duration being longer than the standard recovery period duration in the oilfield area as the pump detecting well distribution area with the excavation space.
In another embodiment of the present invention, the determining module is configured to obtain various data of each pump detection well recovery period in each sub-block from the pump detection well influence factor database according to the sub-blocks divided for the oil field area in advance; drawing a pareto chart corresponding to each sub-block based on various data of each pump detection well recovery period in each sub-block, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period; and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
In another embodiment of the present invention, the yield recovery module is configured to, when it is determined that the drainage string can shorten the recovery period, for any target inspection pump well when performing the next pump inspection operation, if the target inspection pump well does not use the drainage string, recover the yield of the target inspection pump well by using the drainage string; and if the target inspection pump well uses a drainage pipe column, the yield of the target inspection pump well is recovered by adding chemicals to the target inspection pump well.
In another embodiment of the present invention, the apparatus further comprises:
the drawing module is used for drawing a relation curve between each factor and the recovery period duration based on various data in the pump detection well influence factor database;
the determining module is used for determining whether each factor influences the recovery period duration according to a relation curve of each factor and the recovery period duration;
and the processing module is used for ignoring data corresponding to any factor when the pump detecting well yield of other oil and gas areas is recovered if the factor does not influence the recovery period.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
based on the pump detection well influence factor database, a pump detection well distribution area with an excavation space can be determined in a targeted manner, and then the pump detection well distribution area with the excavation space is recovered by adopting the oil drainage pipe column. Because a rock core experiment is not needed, the cost is reduced, the specific fault block is not targeted, the application range is wide, and the determined influence factors are more accurate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for recovering production from a pump well according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for recovering production from a pump well according to an embodiment of the present invention;
FIG. 3 is a pump well production impact factor database created by an embodiment of the present invention;
FIG. 4 is a graph of accumulated frequency provided by the present invention;
FIG. 5 is another graph of accumulated frequency provided by an embodiment of the present invention;
FIG. 6 is a pareto chart provided by an embodiment of the present invention;
FIG. 7 is a schematic diagram of a pump test well yield recovery based on a pump test well influence factor database according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an apparatus for recovering the production of a pump detection well according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a method for recovering the yield of a pump detection well, and referring to fig. 1, the method provided by the embodiment of the invention comprises the following steps:
101. when the pump inspection operation is carried out on the oil well in the oil field area, a pump inspection well influence factor database is established.
The pump detection well influence factor database comprises various data collected in the recovery period of each pump detection well, and each data corresponds to one influence factor.
102. And determining a pump detection well distribution area with an excavation space in the oil field area based on the pump detection well influence factor database.
The pump inspection well distribution area with the excavation space comprises a target pump inspection well with the recovery period duration exceeding the preset duration.
103. And determining the application effect of the oil drainage pipe column on the recovery period time of the pump well on the basis of the recovery period time of the pump well in the pump well detection influence factor database and the application condition of the oil drainage pipe column.
104. And when the next pump detection operation is carried out, recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well.
According to the method provided by the embodiment of the invention, the pump detecting well distribution area with the excavation space can be determined in a targeted manner based on the pump detecting well influence factor database, and then the pump detecting well distribution area with the excavation space is recovered by adopting the oil drainage pipe column. Because a rock core experiment is not needed, the cost is reduced, the specific fault block is not targeted, the application range is wide, and the determined influence factors are more accurate.
In another embodiment of the present invention, determining a manway distribution area having an excavation space within an oilfield region based on a manway influence factor database comprises:
determining an accumulated frequency chart of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database, wherein the accumulated frequency chart is used for representing the frequency of the pump detecting well corresponding to different recovery period durations;
determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well;
determining the standard duration of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well;
and determining the area where the pump detection wells with the recovery period duration being longer than the standard recovery period duration in the oil field area as a pump detection well distribution area with an excavation space.
In another embodiment of the present invention, determining a manway distribution area having an excavation space within an oilfield region based on a manway influence factor database comprises:
acquiring various data of the recovery period of each pump detection well in each sub-block from a pump detection well influence factor database according to the sub-blocks divided for the oil field area in advance;
drawing a pareto chart corresponding to each subblock based on various data of each pump detection well recovery period in each subblock, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period;
and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
In another embodiment of the present invention, when performing a next pump inspection operation, recovering the yield of each target pump inspection well in a pump inspection well distribution area having an excavation space based on the determined application effect of the oil drainage pipe string on the recovery period duration of the pump inspection well, includes:
when the recovery period of the oil leakage pipe column can be shortened, and the next pump detection operation is carried out, for any target pump detection well, if the target pump detection well does not use the oil leakage pipe column, the oil leakage pipe column is adopted to recover the yield of the target pump detection well;
and if the target pump inspection well uses the oil drainage pipe column, the yield of the target pump inspection well is recovered by adding chemicals to the target pump inspection well.
In another embodiment of the invention, the method further comprises:
drawing a relation curve between each factor and the recovery period duration based on various data in the pump detection well influence factor database;
determining whether each factor influences the recovery period duration according to a relation curve of each factor and the recovery period duration;
and if any factor has no influence on the recovery period, ignoring data corresponding to the factor when recovering the output of the pump detecting well in other oil and gas areas.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
The embodiment of the invention provides a method for recovering the yield of a pump detection well, which is implemented by taking equipment for recovering the yield of the pump detection well as an example, and referring to fig. 2, the method provided by the embodiment of the invention comprises the following steps:
201. when the pump inspection operation is carried out on the oil wells in the oil field area, various data in the recovery period of each pump inspection well are collected.
According to different data sources, various data in the recovery period of the pump detection well can be divided into three types, namely basic data, geological factor data and engineering factor data. Wherein the basic data comprises the duration of a yield recovery period, the duration of a water-containing recovery period, the amount of liquid produced, the amount of oil produced, the water content and the like. The geological factor data comprises the block to which the geological factor belongs, stratum water sensitivity factors, stratum energy, bottom permeability and the like. The formation energy includes current formation pressure, pump depth, submergence, working fluid level, etc. The water sensitivity refers to the possibility and degree of permeability reduction of a reservoir caused by reduction or blockage of a throat of the reservoir due to expansion, dispersion, shedding and migration of some minerals of a stratum in an original state in a saline water environment when the minerals meet fresh water or low-salinity water. The engineering factor data comprises the condition of an original well applied oil drainage pipe column, the total amount of working fluid, the property of the working fluid, the detention time of the working fluid, the sand washing type, the bottom layer leakage vector and the like.
202. And establishing a pump detection well influence factor database according to various data in the recovery period of each pump detection well.
According to the data source, various data in each pump detection well recovery period are classified, so that a pump detection well influence factor database can be established, the pump detection well influence factor database comprises various data in each pump detection well recovery period, and each data corresponds to one influence factor.
Referring to fig. 3, the pump well influence factor database is built as follows: summarizing the basic data in the recovery period of each pump detecting well to obtain a basic data sub-database; summarizing the geological factor data in the recovery period of each pump detecting well to obtain a geological factor data sub-database; and summarizing the engineering factor data in the recovery period of each pump well to obtain an engineering factor database, wherein the basic database, the geological factor database and the engineering factor database jointly form a pump well influence factor database.
203. And determining a pump detection well distribution area with an excavation space in the oil field area based on the pump detection well influence factor database.
The pump detecting well distribution area with the excavation space is the area where the pump detecting well with longer recovery period and needing to take measures to shorten the recovery period is located. And the pump detecting well distribution area comprises target pump detecting wells with the recovery period time exceeding the preset time. The preset time duration can be obtained by analyzing the statistical data, and the preset time duration can be 5 days, 7 days, 10 days, and the like.
The embodiment of the invention is based on the pump detection well influence factor database, and when determining the pump detection well distribution area with the excavation space in the oil field area, the following two modes can be adopted:
the first way comprises the steps of:
20311. and determining an accumulated frequency chart of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database.
And counting the frequency of the pump detection wells with different recovery period durations in the pump detection well influence factor database, and drawing an accumulated frequency graph of the recovery period of the pump detection wells by taking the recovery period durations as an abscissa and the frequency of the pump detection wells as an ordinate. The cumulative frequency chart is a histogram and is used for representing the frequency of the pump detection wells corresponding to different recovery period durations.
20312. And determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well.
And determining a coordinate point according to each stripe included in the cumulative frequency chart of the pump detection well in the recovery period, and connecting the coordinate points to obtain a normal distribution curve of the pump detection well in the recovery period.
20313. And determining the standard time length of the recovery period based on the normal distribution curve of the recovery period of the pump detection well.
And when the normal distribution curve of the recovery period of the pump detection well is obtained, obtaining a mu value from the normal distribution curve, and taking the recovery period duration corresponding to the mu value as the standard recovery period duration.
Fig. 4 is a normal distribution curve plotted at 2-day intervals, and by analyzing the normal distribution curve, it can be seen that μ is 8.81, and by approximation, the standard duration of the recovery period can be determined to be 9 days.
Fig. 5 is a normal distribution curve plotted at 1-day intervals, and from the analysis of the normal distribution curve, it can be seen that the standard duration of the recovery period is determined to be 5 days if the value of μ is 5.
20314. And determining the area where the pump detection wells with the recovery period duration being longer than the standard recovery period duration in the oil field area as a pump detection well distribution area with an excavation space.
After the recovery period standard time length is determined, the recovery period time length of each pump detection well in the oil-gas area can be compared with the recovery period standard time length to obtain the pump detection wells with the recovery period time length being greater than the recovery period standard time length, and therefore the area where the pump detection wells with the recovery period time length being greater than the recovery period standard time length are located is determined to be the pump detection well distribution area with the excavation space.
The second way comprises the following steps:
20321. and acquiring various data of the recovery period of each pump detection well in each sub-block from the pump detection well influence factor database according to the sub-blocks divided for the oil field area in advance.
Before this step is performed, the hydrocarbon zone needs to be divided into different sub-blocks, each sub-block comprising at least one pumping well. Based on a pre-established pump detection well influence factor database and a plurality of pre-divided sub-blocks, various data of the recovery period of each pump detection well in each sub-block can be obtained.
20322. And drawing a pareto chart corresponding to each sub-block based on various data of each pump detecting well recovery period in each sub-block.
And determining the influence factor of each influence factor on the recovery period duration by taking the sub-blocks as units and counting various data of each pump detection well in each sub-block in the recovery period, and further drawing a pareto chart corresponding to each sub-block according to each influence factor and the influence factor of each influence factor on the recovery period duration. Wherein, the pareto chart is used for characterizing the influence degree of each factor on the recovery period.
FIG. 6 is a pareto chart corresponding to a certain sub-block, and the related influence factors include total amount of working fluid (or daily fluid production), daily fluid production before operation, current formation pressure, fault block permeability, total amount of working fluid, working fluid working time, submergence degree, formation water sensitivity, water content before operation, working fluid level before operation, etc., wherein the influence factor of total amount of working fluid (or daily fluid production) on recovery period duration is 0.92, the influence factor of daily fluid production before operation on recovery period duration is 0.80, the influence factor of current formation pressure on recovery period duration is 0.80, the influence factor of fault block permeability on recovery period duration is 0.79, the influence factor of total amount of working fluid on recovery period duration is 0.78, the influence factor of flushing fluid working time on recovery period duration is 0.73, the influence factor of submergence degree on recovery period is 0.64, the influence factor of formation water sensitivity on recovery period is 0.63, The influence factor of the water content before the operation on the recovery period duration is 0.56, the influence factor of the working fluid before the operation on the recovery period duration is 0.54, and the pareto chart shown in fig. 6 can be drawn according to each influence factor and the influence factor of each influence factor on the recovery period duration.
20323. And determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
Selecting the factors with the sensitive factor influence factor larger than 0.6, and determining the oil well with the factors of high working fluid amount, current stratum pressure, long working fluid retention time and the like as the next step of oil well production with potential excavation.
204. And determining the application effect of the oil drainage pipe column on the recovery period time of the pump well on the basis of the recovery period time of the pump well in the pump well detection influence factor database and the application condition of the oil drainage pipe column.
According to the pump inspection well influence factor database comprising the recovery period duration of each pump inspection well and the application condition of each pump inspection well to the oil drainage pipe column, a comparison line graph of the recovery period before and after the application of the oil drainage pipe column can be drawn, and the analysis of the comparison line graph of the recovery period before and after the application of the oil drainage pipe column can discover that the recovery period duration of the pump inspection well is greatly shortened after the application of the oil drainage pipe column.
205. And when the next pump detection operation is carried out, recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well.
When the next pump detection operation is carried out, based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well, when the yield of each target pump detection well in the pump detection well distribution area with the excavation space is recovered, the following steps can be adopted:
2051. and when the recovery period of the oil leakage pipe column can be shortened, and the next pump detection operation is carried out, for any target pump detection well, if the target pump detection well does not use the oil leakage pipe column, the oil leakage pipe column is adopted to recover the yield of the target pump detection well.
The oil drainage pipe column can shorten the recovery period of the pump inspection well, so that when the pump inspection operation is performed next time, for any target pump inspection well in the pump inspection well distribution area with the excavation space, if the target pump inspection well does not use the oil drainage pipe column in the recovery period, the oil drainage pipe column can be applied to the target pump inspection well, the recovery period of the target pump inspection well is shortened, and the yield of the target pump inspection well is recovered as soon as possible. Further, in order to recover the yield of the target detection pump well more quickly, the target detection pump well can be subjected to chemical adding treatment at the same time.
2052. And if the target pump inspection well uses the oil drainage pipe column, the yield of the target pump inspection well is recovered by adding chemicals to the target pump inspection well.
If the target pump inspection well uses the oil drainage pipe column, the target pump inspection well can be subjected to chemical adding treatment to shorten the recovery period of the target pump inspection well, so that the yield of the target pump inspection well can be recovered as soon as possible.
In another embodiment of the invention, in consideration of the fact that data which does not affect or has a very small effect on the recovery period duration of the pump detection well may exist in the data acquired when the pump detection well influence factor database is constructed, the data are acquired, which not only consumes acquisition time, but also wastes storage space due to small usage after acquisition. When the process is implemented, the method can comprise the following steps:
the first step, based on various data in the pump well detection influence factor database, a relation curve of each factor and the recovery period duration is drawn.
And secondly, determining whether each factor influences the recovery period duration or not according to a relation curve of each factor and the recovery period duration.
And thirdly, if any factor does not influence the recovery period duration, ignoring data corresponding to the factor when recovering the output of the pump detecting well in other oil and gas areas.
When determining that any factor does not influence the recovery period, and in the process of recovering the output of the pump detecting wells in other oil and gas areas, and when constructing the pump detecting well influence factor databases in other oil and gas areas, data corresponding to the factor can be ignored
FIG. 7 illustrates a method for recovering production from a pump test well, according to an embodiment of the present invention, performed as follows:
1. determining an oil well distribution area with a submerging space by drawing an oil well recovery period accumulated frequency chart based on a pump detection well influence factor database;
2. on the basis of a pump inspection well influence factor database, main factors influencing the recovery period can be determined by drawing a sensitivity factor pareto chart, so that an oil well with high sensitivity in the recovery period is determined, and actually, an oil well distribution area with a submergence digging space is also determined;
3. based on a pump detection well influence factor database, the application effect of the oil drainage pipe column can be determined by drawing corresponding line graphs of the oil drainage pipe column in the recovery period before and after application;
4. determining the influence degree of the single factor on the recovery period by drawing a scatter diagram of the corresponding relation between the single factor and the recovery period based on the pump inspection well influence factor database, so that when the pump inspection well yield of other oil and gas areas is recovered, factors which do not influence the recovery period are ignored;
5. according to the application effect of the oil drainage pipe column, the pump well detection in the oil well distribution area with the excavation space can be treated in the modes of applying the oil drainage pipe column, adding the medicine and the like, so that the recovery period duration of the pump well detection is shortened, and the yield of the pump well detection is recovered as soon as possible.
According to the method provided by the embodiment of the invention, the pump detecting well distribution area with the excavation space can be determined in a targeted manner based on the pump detecting well influence factor database, and then the pump detecting well distribution area with the excavation space is recovered by adopting the oil drainage pipe column. Because a rock core experiment is not needed, the cost is reduced, the specific fault block is not targeted, the application range is wide, and the determined influence factors are more accurate.
Referring to fig. 8, an embodiment of the present invention provides an apparatus for restoring production from a pump well, the apparatus comprising:
a database establishing module 801, configured to establish a pump detection well influence factor database when performing pump detection operation on an oil well in an oil field area, where the pump detection well influence factor database includes various data acquired in a recovery period of each pump detection well, and each data corresponds to one influence factor;
the determining module 802 is configured to determine a pump detection well distribution area with an excavation space in the oil field area based on the pump detection well influence factor database, where the pump detection well distribution area with the excavation space includes a target pump detection well whose recovery period duration exceeds a preset duration;
the determining module 802 is configured to determine an application effect of the pump inspection string on the pump inspection recovery period duration based on the pump inspection recovery period duration and an application condition of the pump inspection string in the pump inspection influence factor database;
and the yield recovery module 803 is used for recovering the yield of each target pump inspection well in the pump inspection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump inspection well when the next pump inspection operation is performed.
In another embodiment of the present invention, the determining module 801 is configured to determine an accumulated frequency map of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database, where the accumulated frequency map is used to represent frequency numbers of the pump detecting wells corresponding to different recovery period durations; determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well; determining the standard duration of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well; and determining the area where the pump detection wells with the recovery period duration being longer than the standard recovery period duration in the oil field area as a pump detection well distribution area with an excavation space.
In another embodiment of the present invention, the determining module 801 is configured to obtain various data of each pump detection well recovery period in each sub-block from the pump detection well influence factor database according to the sub-blocks divided for the oil field region in advance; drawing a pareto chart corresponding to each subblock based on various data of each pump detection well recovery period in each subblock, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period; and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
In another embodiment of the present invention, the yield recovery module 803 is configured to, when it is determined that the pump leakage string can shorten the recovery period, for any target pump inspection well when the next pump inspection operation is performed, recover the yield of the target pump inspection well by using the pump leakage string if the target pump inspection well does not use the pump leakage string; and if the target pump inspection well uses the oil drainage pipe column, the yield of the target pump inspection well is recovered by adding chemicals to the target pump inspection well.
In another embodiment of the present invention, the apparatus further comprises:
the drawing module is used for drawing a relation curve between each factor and the recovery period duration based on various data in the pump detection well influence factor database;
a determining module 801, configured to determine whether each factor affects the recovery period duration according to a relationship curve between each factor and the recovery period duration;
and the processing module is used for ignoring data corresponding to any factor when the pump detecting well yield of other oil and gas areas is recovered if any factor does not influence the recovery period.
In summary, the device provided in the embodiment of the present invention can specifically determine the distribution area of the pump detection wells having the excavation space based on the database of the pump detection well influence factors, and then recover the distribution area of the pump detection wells having the excavation space by using the oil drainage pipe. Because a rock core experiment is not needed, the cost is reduced, the specific fault block is not targeted, the application range is wide, and the determined influence factors are more accurate.
It should be noted that: in the apparatus for recovering the output of the pump detection well according to the above embodiment, when the output of the pump detection well is recovered, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules as needed, that is, the internal structure of the apparatus for recovering the output of the pump detection well is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the device for recovering the yield of the pump detection well provided by the embodiment and the method embodiment for recovering the yield of the pump detection well belong to the same concept, and the specific implementation process is detailed in the method embodiment and is not described again.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of restoring production to a pump well, the method comprising:
when the oil well in the oil field area is subjected to pump detection operation, a pump detection well influence factor database is established, wherein the pump detection well influence factor database comprises various data collected in the recovery period of each pump detection well, and each data corresponds to one influence factor;
determining a pump detection well distribution area with an excavation space in the oil field area based on the pump detection well influence factor database, wherein the pump detection well distribution area with the excavation space comprises a target pump detection well of which the recovery period duration exceeds a preset duration;
determining the application effect of the oil drainage pipe column on the recovery period duration of the pump detection well based on the recovery period duration of the pump detection well in the pump detection well influence factor database and the application condition of the oil drainage pipe column;
and when the next pump detection operation is carried out, recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well.
2. The method of claim 1, wherein determining a pump well distribution area having an excavation space within the field area based on a pump well influence factor database comprises:
determining an accumulated frequency chart of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database, wherein the accumulated frequency chart is used for representing the frequency of the pump detecting well corresponding to different recovery period durations;
determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well;
determining the standard time length of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well;
and determining the area where the pump detecting wells with the recovery period duration being longer than the standard recovery period duration in the oilfield area as the pump detecting well distribution area with the excavation space.
3. The method of claim 1, wherein determining a pump well distribution area having an excavation space within the field area based on a pump well influence factor database comprises:
acquiring various data of each pump detection well recovery period in each sub-block from the pump detection well influence factor database according to the sub-blocks divided for the oil field area in advance;
drawing a pareto chart corresponding to each sub-block based on various data of each pump detection well recovery period in each sub-block, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period;
and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
4. The method of claim 1, wherein recovering each target production rate for the pump well in the pump well spread area having excavated space based on the determined effect of the drainage tubing string on the duration of the pump well recovery period at the next pump well test operation comprises:
when the recovery period of the oil drainage pipe column can be shortened, and the next pump detection operation is carried out, for any target pump detection well, if the target pump detection well does not use the oil drainage pipe column, the oil drainage pipe column is adopted to recover the yield of the target pump detection well;
and if the target inspection pump well uses a drainage pipe column, the yield of the target inspection pump well is recovered by adding chemicals to the target inspection pump well.
5. The method according to any one of claims 1 to 4, further comprising:
drawing a relation curve between each factor and the recovery period duration based on various data in the pump detecting well influence factor database;
determining whether each factor influences the recovery period duration according to a relation curve of each factor and the recovery period duration;
and if any factor has no influence on the recovery period, ignoring data corresponding to the factor when recovering the output of the pump detecting well in other oil and gas areas.
6. An apparatus for restoring production from a pump well, the apparatus comprising:
the system comprises a database establishing module, a data processing module and a data processing module, wherein the database establishing module is used for establishing a pump detection well influence factor database when the pump detection operation is carried out on an oil well in an oil field area, the pump detection well influence factor database comprises various data collected in each pump detection well recovery period, and each data corresponds to an influence factor;
the determining module is used for determining a pump detection well distribution region with an excavation space in the oil field region based on the pump detection well influence factor database, wherein the pump detection well distribution region with the excavation space comprises a target pump detection well of which the recovery period duration exceeds a preset duration;
the determining module is used for determining the application effect of the oil drainage pipe column on the recovery period duration of the pump detection well based on the recovery period duration of the pump detection well in the pump detection well influence factor database and the application condition of the oil drainage pipe column;
and the yield recovery module is used for recovering the yield of each target pump detection well in the pump detection well distribution area with the excavation space based on the determined application effect of the oil drainage pipe column on the recovery period duration of the pump detection well when the pump detection operation is performed next time.
7. The device of claim 6, wherein the determining module is configured to determine an accumulated frequency map of the recovery period of the pump detecting well according to the pump detecting well and the recovery period duration thereof in the pump detecting well influence factor database, and the accumulated frequency map is used for representing frequency of the pump detecting well corresponding to different recovery period durations; determining a normal distribution curve of the recovery period of the pump detecting well based on the cumulative frequency chart of the recovery period of the pump detecting well; determining the standard time length of the recovery period based on the normal distribution curve of the recovery period of the pump detecting well; and determining the area where the pump detecting wells with the recovery period duration being longer than the standard recovery period duration in the oilfield area as the pump detecting well distribution area with the excavation space.
8. The apparatus of claim 6, wherein the determining module is configured to obtain various data of a recovery period of each pump detection well in each sub-block from the pump detection well influence factor database according to sub-blocks previously divided for the oilfield region; drawing a pareto chart corresponding to each sub-block based on various data of each pump detection well recovery period in each sub-block, wherein the pareto chart is used for representing the influence degree of each factor on the recovery period; and determining a distribution area of the pump detecting well with the excavation space in the oil field area based on the pareto chart corresponding to each sub-block.
9. The apparatus of claim 6, wherein the production recovery module is configured to, when it is determined that the bleeding tubing string can shorten the recovery period, perform a next pump inspection operation on any target inspection pump well, if the target inspection pump well does not use the bleeding tubing string, recover the production of the target inspection pump well by using the bleeding tubing string; and if the target inspection pump well uses a drainage pipe column, the yield of the target inspection pump well is recovered by adding chemicals to the target inspection pump well.
10. The apparatus of any one of claims 6 to 9, further comprising:
the drawing module is used for drawing a relation curve between each factor and the recovery period duration based on various data in the pump detection well influence factor database;
the determining module is used for determining whether each factor influences the recovery period duration according to a relation curve of each factor and the recovery period duration;
and the processing module is used for ignoring data corresponding to any factor when the pump detecting well yield of other oil and gas areas is recovered if the factor does not influence the recovery period.
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| CN201811054066.3A CN110886605B (en) | 2018-09-10 | 2018-09-10 | Method and device for recovering yield of pump detection well |
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