CN107965308B - Method and device for determining water yield of single well - Google Patents
Method and device for determining water yield of single well Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 133
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- E—FIXED CONSTRUCTIONS
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- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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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
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Abstract
The invention provides a method and a device for determining water production of a single well, wherein the method comprises the following steps: adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve; taking the adjusted percolation curve as a constraint, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be measured based on the geological model of the work area to be measured until the total water yield, the single-well gas production and the single-well pressure obtained after adjustment meet preset requirements; and determining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure obtained after adjustment. In the embodiment of the invention, the single-well water yield precision of the work area to be tested is greatly improved, and effective guidance can be provided for reasonable productivity evaluation and drainage gas production measure optimization of a water-producing gas well in a water-rich area.
Description
Technical Field
The invention relates to the technical field of geological exploration, in particular to a method and a device for determining water yield of a single well.
Background
At present, a low-cost development route realizes the large-scale effective development of a tight sandstone gas reservoir, and ground gathering and transportation and well group series connection combined measurement are one important implementation mode. However, for the area where the oil and gas exploitation is performed by using the series well group, due to the lack of the gas and water production data of a single well, the calculation of the gas well productivity and the evaluation and deployment of the overall productivity of the block have certain difficulties. Particularly for a rich water area with more water production, the gas well is treated as a waterless production well due to the fact that water production metering of a single well does not exist, and large errors exist in the aspects of reasonable production allocation, adjustment of drainage and gas production measures and the like.
The water production split of the series well group can be used for calculating the daily water production data of a single well of the series well group. In the prior art, the water production splitting of the series well group mainly adopts the following two modes:
1) splitting the water yield into single wells in stages by considering the liquid carrying capacity of the gas well based on the trend changes of the total gas yield and the water yield of the well group;
2) and (3) considering static geological parameters of a reservoir drilled by the gas well, and establishing a water yield calculation formula by a data statistical regression method in combination with the gas yield of the gas well, so as to predict the water yield of the single well.
However, both methods are static split calculation methods under the average idea, that is, the water yield of the gas well at a certain time is predicted only through simple operation among gas well parameters, and the water yield level of the gas well in the whole life cycle cannot be comprehensively evaluated from the whole body. The first method ignores the difference of different single wells in production, and establishes the premise that the gas well is gradually reduced to below the critical liquid carrying flow from a position slightly higher than the critical liquid carrying flow, so that the method is not suitable for high-yield wells with good liquid carrying capacity and gas wells with large water yield, fast liquid accumulation and fast reduction of casing pressure; in the second method, the water yield calculation formula established by regression has a wide distribution range of experimental samples, and has poor correlation when fitting data regression, so that large errors can occur to characteristics with large production dynamic differences.
Disclosure of Invention
The invention provides a method and a device for determining single-well water yield, which aim to solve the problem of low single-well yield prediction precision in the prior art.
In order to achieve the above object, in one aspect, an embodiment of the present invention provides a method for determining water production of a single well, which may include:
adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve;
taking the adjusted phase permeability curve as a constraint, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on a geological model of the work area to be detected until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements;
and obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure which meet the preset requirements and are obtained after the adjustment.
Preferably, after obtaining the single-well water production of the work area to be tested, the method further comprises:
calculating the production capacity of a single well in the work area to be tested;
and carrying out reasonable production allocation of the gas well according to the production capacity of the single well.
Preferably, the adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve includes:
acquiring the single-well water yield, the single-well gas yield, the pressure data and a reference phase permeability curve of a reference well in the work area to be tested;
and applying the reference facies leakage curve to the reference well geological model, and adjusting the reference facies leakage curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies leakage curve.
Preferably, the reference percolation curve is obtained, comprising:
obtaining the phase permeation curves of a plurality of rock core samples in the work area to be tested;
and carrying out normalization processing on the plurality of phase permeation curves to obtain the reference phase permeation curve.
Preferably, the reference well geological model is established in the following manner:
acquiring a data set of the reference well, the data set including at least one of: logging data, seismic data, core data;
and obtaining the reference well geological model by adopting a regression constraint method based on the data set.
Preferably, the adjusting the adjusted permeability curve is used as a constraint, the total water yield, the single-well gas production and the single-well pressure of the work area to be measured are adjusted based on a geological model of the work area to be measured until the total water yield, the single-well gas production and the single-well pressure obtained after adjustment meet preset requirements, and the adjusting method comprises the following steps:
and applying the adjusted phase permeability curve to a geological model of the work area to be detected, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on historical fitting of the total water yield, the single-well gas production and the single-well pressure of the work area to be detected to obtain the adjusted total water yield, the single-well gas production and the single-well pressure.
In another aspect, an embodiment of the present invention further provides a device for determining a water yield of a single well, including:
the facies leakage curve determining module is used for adjusting the reference facies leakage curve based on the established reference well geological model to obtain an adjusted facies leakage curve;
the parameter adjusting module is used for adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on a geological model of the work area to be detected by taking the adjusted phase-permeation curve as constraint until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements;
and the water yield determination module is used for obtaining the single-well water yield of the work area to be detected according to the total water yield, the single-well gas yield and the single-well pressure obtained after adjustment.
Preferably, the apparatus further comprises:
the production capacity calculation module is used for calculating the production capacity of the single well in the work area to be tested after the water yield of the single well in the work area to be tested is obtained;
and the rational production allocation module is used for carrying out rational production allocation of the gas well according to the production capacity of the single well.
Preferably, the phase permeation curve determining module includes:
the parameter acquisition unit is used for acquiring the single-well water yield, the single-well gas yield, the pressure data and the reference phase permeability curve of the reference well in the work area to be detected;
and the curve determining unit is used for applying the reference facies percolation curve to the reference well geological model, and adjusting the reference facies percolation curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies percolation curve.
Preferably, the parameter acquiring unit includes:
the first obtaining subunit is used for obtaining the infiltration curves of a plurality of rock core samples in the work area to be tested;
and the second acquisition subunit is used for carrying out normalization processing on the plurality of phase permeation curves to obtain the reference phase permeation curve.
In the embodiment of the invention, the adjusted phase-permeation curve determined by the reference well geological model is taken as a constraint, and the total water yield, the single-well gas production and the single-well pressure of the work area to be measured are adjusted based on the geological model of the work area to be measured until the adjusted total water yield, single-well gas production and single-well pressure meet the preset requirements; and obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure which are obtained after adjustment and meet the preset requirements. Namely, the water yield splitting of the whole life cycle of the gas well is realized by utilizing the geological model of the work area to be detected for processing, the water yield of the gas well at a certain specific time is predicted only in a single plane, the single-well water yield precision of the work area to be detected, which is obtained by the obtained single-well water yield, is greatly improved, and effective guidance can be provided for reasonable productivity evaluation and drainage gas production measure optimization of the water-producing gas well in the water-rich area.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a flow chart of a method for determining water production from a single well provided herein;
fig. 2 is a block diagram of a single well water production determination apparatus provided by the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
Considering that for an area where oil and gas exploitation is performed by using series-connected well groups, namely for a working area to be tested where dozens or dozens of gas wells are developed and collected to a gas collecting station through pipelines and total water yield is recorded at the gas collecting station, in the process of determining single-well daily water production data (in the application, water production splitting) of the type of working area to be tested, the water yield of the gas well in a certain specific time period can be predicted only through simple operation among gas well parameters in the prior art, but the defect that the water production level of the gas well in the whole life cycle cannot be comprehensively evaluated is overcome, the inventor provides that a phase permeability curve of the working area to be tested is determined by a reference well geological model, then the phase permeability curve is taken as constraint, the adjusted total water yield, single-well gas production and single-well pressure of the working area to be tested are determined based on the geological model of the working area to be tested, and finally, and obtaining the single-well water yield of the work area to be detected according to the total water yield, the single-well gas yield and the single-well pressure. In the process of determining the water yield of the single well, the water yield of the single well can be determined based on the geological model of the whole work area to be detected, so that the water yield level of the gas well can be completely tightened from the whole angle. Based on this, a method for determining water production of a single well is proposed, as shown in fig. 1, which may include the following steps:
s101: and adjusting the reference facies penetration curve based on the established reference well geological model to obtain the adjusted facies penetration curve.
In this embodiment, the reference facies permeability curve may be adjusted based on the reference well geological model, so that an adjusted facies permeability curve may be obtained.
The reference well geological model may be determined based on a part of wells in the work area to be measured, which meet the preset type requirements, such as: the well meeting the preset type requirement can be a vertical well-horizontal well mixed well pattern determined by a small well group consisting of 4-5 vertical wells and horizontal wells with single-well water production measurement. Specifically, when the well required by the preset type is a vertical well-horizontal well mixed well pattern, the reference well geological model can be determined in the following manner: and (3) starting from the probability theory idea, obtaining a reference well geological model by adopting a regression constraint method. The method can comprehensively use the data of logging, earthquake, geology and the like of the vertical well-horizontal well mixed well pattern, introduce multiple constraint conditions by stages and gradually reduce the multi-solution and uncertainty of data interpretation. Firstly, a logging constrained seismic inversion natural gamma field can be adopted, and a natural gamma model is established under the control of prior geological information; establishing a sandstone probability body by regression of the relation between the natural gamma model and the sandstone probability, and establishing a rock facies model by a multipoint geostatistics method; then, establishing a sedimentary microfacies model controlled by a rock facies and a braided river system; finally, the factors such as depositional microfacies, effective sand body scales, reservoir parameter distribution characteristics and the like of the vertical well-horizontal well mixed well pattern are obtained through combined analysis such as field geological outcrop measurement, multi-well continuous well effective sand body dissection, well logging interpretation and the like, the factors such as depositional microfacies, effective sand body scales, reservoir parameter distribution characteristics and the like are comprehensively considered, and a reference well geological model of the vertical well-horizontal well mixed well pattern is established, and the method can comprise the following steps: effective sand body models and reservoir property models.
The reference permeability curve can be determined according to some core samples in the work area to be tested. Specifically, the reference percolation curve may be determined as follows:
s1-1-1: the method can obtain the facies permeability curve obtained by analyzing a plurality of core samples in a laboratory, and a plurality of facies permeability curves can be obtained by using a plurality of core samples;
s1-1-2: and carrying out normalization processing on a plurality of phase permeability curves obtained by laboratory core analysis, thereby obtaining the reference phase permeability curve.
In this embodiment, adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve may include:
s1-2-1: and acquiring the single-well water yield, the single-well gas yield, the pressure data and the reference phase permeability curve of a reference well in the work area to be detected.
S1-2-2: and applying the reference facies leakage curve to the reference well geological model, and adjusting the reference facies leakage curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies leakage curve.
The historical fitting can be based on the established reference well geological model, the reference phase permeability curve is used as a constraint, the daily production yield data and the corresponding pressure data of the reference well are calculated, the daily production yield data and the pressure data obtained through calculation are matched and compared with the actual production data of the reference well, the reference phase permeability curve is adjusted and corrected in the fitting process, so that the numerical value calculated by the model is matched with the actual production data (including the daily production yield data and the pressure data) of the gas well, and the obtained phase permeability curve is the adjusted phase permeability curve capable of reflecting the fluid seepage characteristics of the work area to be measured.
For example: and applying the reference facies percolation curve to a reference well geological model, and adjusting the reference facies percolation curve in the historical fitting process of the water yield of the single well, the gas yield of the single well and the pressure data of the reference well, thereby realizing the adjustment of the reference facies percolation curve. And when fitting of the reference well single-well water yield, the single-well gas yield and the pressure data obtained by calculation according to the reference well geological model and the data actually measured by the reference well is completed, the obtained facies percolation curve is the adjusted facies percolation curve.
In this embodiment, because the measurement of the reference permeability curve of the core sample in the laboratory is affected by the experimental equipment, the core quality and the experimental environment, and the difference of the experimental results is large, the reference permeability curve can be adjusted in the above manner, so that the adjusted permeability curve capable of reflecting the fluid permeability characteristics of the work area to be measured can be obtained. The method has the advantages that the laboratory core test data, the static geological parameters of the gas reservoir and the actual production dynamics of the gas well are combined to correct and obtain the gas-water phase permeability curve, and the defects that in the prior art, only the static geological parameters of the reservoir drilled by the gas well are considered, the gas well gas yield is combined, and a water yield calculation formula is established through a data statistical regression method, so that the water yield of a single well is predicted are overcome.
S102: and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be measured based on the geological model of the work area to be measured by taking the adjusted phase-permeation curve as constraint until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements.
The basic static geological parameters are all reflected in the geological model of the work area to be measured. For numerical simulation research, the percolation curve is the most sensitive parameter, and the percolation curve is very important for accuracy of a numerical simulation result, so in this embodiment, after the percolation curve is adjusted and corrected in S101, the accurate percolation curve is used as a constraint, and total water yield, single-well gas production and single-well pressure of a work area to be measured are adjusted based on a geological model of the work area to be measured until the adjusted total water yield, single-well gas production and single-well pressure meet preset requirements.
The geological model of the work area to be tested may be determined in a manner similar to that used to obtain the reference well geological model. Specifically, a geological model of the work area to be measured can be obtained by adopting a regression constraint method based on the probability theory. The data of logging, earthquake, geology and the like of the work area to be tested can be comprehensively utilized, multiple constraint conditions are introduced by stages, and the multi-solution and uncertainty of data interpretation are gradually reduced. Firstly, a logging constrained seismic inversion natural gamma field can be adopted, and a natural gamma model is established under the control of prior geological information; establishing a sandstone probability body by regression of the relation between the natural gamma model and the sandstone probability, and establishing a rock facies model by a multipoint geostatistics method; then, establishing a sedimentary microfacies model controlled by a rock facies and a braided river system; finally, comprehensively considering factors such as sedimentary microfacies, effective sand body scale, reservoir parameter distribution characteristics and the like, establishing a geological model of the work area to be tested, which can comprise the following steps: effective sand body models and reservoir property models.
In this embodiment, the adjusted percolation curve is used as a constraint, the total water yield, the single-well gas production rate, and the single-well pressure of the work area to be measured are adjusted based on the geological model of the work area to be measured, and the adjusted total water yield, single-well gas production rate, and single-well pressure meet the preset requirements, which may include: and applying the adjusted percolation curve to a geological model of the work area to be measured, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be measured based on historical fitting of the total water yield, the single-well gas production and the single-well pressure of the work area to be measured to obtain the adjusted total water yield, the single-well gas production and the single-well pressure.
For example: the obtained adjusted phase permeability curve can be applied to a geological model of the work area to be measured, the total water yield, the single-well gas production rate and the single-well pressure of the work area to be measured calculated by the model are adjusted by taking the adjusted phase permeability curve as a constraint, the total water yield, the single-well gas production rate and the single-well pressure of the work area to be measured calculated by the model are adjusted to be consistent with the actually measured total water yield, the single-well gas production rate and the single-well pressure data of the work area to be measured, and the historical fitting of the total water yield, the single-well gas production rate and the single-well pressure of the work area to be measured in the work area to be measured is completed at this.
In this embodiment, under the constraint of the adjusted phase-permeation curve, the three-dimensional modeling and numerical simulation means of the work area to be measured are integrated to realize splitting of the water production of the single well of the series-connection combined measurement well group.
S103: and obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure which meet the preset requirements and are obtained after adjustment.
The water yield of a single well is the same as the gas yield of the single well and the pressure of the single well, is a series of numerical values relative to time, is a curve with the horizontal axis of time (unit: day), and changes every day. In the numerical simulation research calculation and adjustment processes, the total water yield, the single-well gas yield and the single-well pressure which meet the preset requirements are obtained, and meanwhile, the accurate single-well water yield is obtained through calculation. The numerical simulation calculation is a means for comprehensively considering factors in the aspects of static geology and dynamic production and carrying out prediction calculation on the production of the gas well, and the gas production rate and the pressure of a single well are calculated while the water production rate of the single well is also calculated.
Further, after obtaining the water production of a single well, the following two aspects can be applied: firstly, the productivity of gas-water two phases of a gas well is calculated. At present, under the condition of no water production data, a single-phase capacity equation based on single-phase gas simulated pressure is used for evaluating inflow dynamic characteristics of a gas well and calculating the capacity of the gas well, and after the water production data of the gas well is obtained, a gas-water two-phase simulated pressure function is used for analyzing the inflow dynamic characteristics of the gas well and evaluating the capacity of the gas well. And secondly, determining a gas well drainage and gas production construction period, and calculating the accumulated liquid amount of a shaft by combining the gas well critical liquid carrying rule according to the obtained gas well water production data, so as to determine how long different types of gas wells need to carry out primary drainage.
The method for determining the water production of a single well is described in detail with reference to a specific embodiment, however, it should be noted that the specific embodiment is only for better describing the present invention and should not be construed as limiting the present invention. The method provided by the application is utilized to calculate and obtain the water yield of a single well in a certain work area, and the data (simulated splitting) shown in the table 1 can be obtained; the water-gas two-phase measurement test is adopted to obtain the water yield of a single well of some wells in a certain work area, and the data (the water-gas two-phase measurement test) shown in the table 1 can be obtained:
TABLE 1 comparison of water splitting result simulation with on-site gas-water two-phase metering test
The comparison result of the simulated water splitting result and the actual gas-water two-phase metering experiment on site in the table 1 shows that: the simulated water production splitting method provided by the application is reliable, and compared with a gas-water two-phase metering test, the relative error between the simulated water production splitting method and the gas-water two-phase metering test is within 10%. The water yield data obtained by splitting by the method for determining the water yield of the single well is used for evaluating the productivity of the gas phase and the water phase, and compared with the prior art without considering the water yield data, the method has an error of more than 10 percent; meanwhile, the optimal time period of the gas well drainage and gas production measures can be determined according to the water yield obtained by splitting according to the determination method of the water yield of the single well provided by the application.
In the embodiment of the invention, the adjusted phase-permeation curve determined by the reference well geological model is taken as a constraint, and the total water yield, the single-well gas production and the single-well pressure of the work area to be measured are adjusted based on the geological model of the work area to be measured until the adjusted total water yield, single-well gas production and single-well pressure meet the preset requirements; and obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure which are obtained after adjustment and meet the preset requirements. Namely, the water yield splitting of the whole life cycle of the gas well is realized by utilizing the geological model of the work area to be detected for processing, the water yield of the gas well at a certain specific time is predicted only in a single plane, the single-well water yield precision of the work area to be detected is greatly improved, and effective guidance can be provided for reasonable capacity evaluation and water drainage and gas production measure optimization of the water-producing gas well in the water-rich area.
Based on the same inventive concept, the embodiment of the invention also provides a device for determining the water yield of a single well, as described in the following embodiments. Because the principle of solving the problems of the single-well water yield determination device is similar to that of the single-well water yield determination method, the implementation of the single-well water yield determination device can refer to the implementation of the single-well water yield determination method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 2 is a block diagram showing a structure of a device for determining water production from a single well according to an embodiment of the present invention, as shown in fig. 2, including: a phase permeation curve determining module 201, a parameter adjusting module 202, and a water yield determining module 203, which are described below.
The facies permeability curve determining module 201 may be configured to adjust a reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve;
the parameter adjusting module 202 may be configured to adjust the total water yield, the single-well gas production rate, and the single-well pressure of the work area to be measured based on a geological model of the work area to be measured with the adjusted percolation curve as a constraint until the total water yield, the single-well gas production rate, and the single-well pressure obtained after adjustment meet preset requirements;
and the water yield determination module 203 can be used for determining the single-well water yield of the work area to be detected according to the total water yield, the single-well gas yield and the single-well pressure obtained after adjustment.
In one embodiment, the apparatus may further include: the production capacity calculation module can be used for calculating the production capacity of the single well in the work area to be tested after the water yield of the single well in the work area to be tested is obtained; and the rational production allocation module can be used for carrying out rational production allocation on the gas well according to the production capacity of the single well.
In one embodiment, the cementation curve determination module may include: the parameter acquisition unit can be used for acquiring the single-well water yield, the single-well gas yield, the pressure data and the reference phase permeability curve of the reference well in the work area to be detected; and the curve determining unit can apply the reference facies leakage curve to the reference well geological model, and adjust the reference facies leakage curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies leakage curve.
In one embodiment, the parameter obtaining unit may include: the first obtaining subunit is used for obtaining the infiltration curves of a plurality of core samples in the work area to be tested; the second obtaining subunit may be configured to perform normalization processing on the plurality of phase-permeation curves to obtain the reference phase-permeation curve.
The present application is not limited to what has to be described in the embodiments of the present application. Certain industry standards, or implementations modified slightly from those described using custom modes or examples, may also achieve the same, equivalent, or similar, or other, contemplated implementations of the above-described examples. Examples of data acquisition/storage/determination and the like using these modifications or variations may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The units, devices, modules, etc. set forth in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of a plurality of sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described with examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application without departing from the spirit of the application, and it is intended that the appended claims encompass such variations and permutations without departing from the spirit of the application.
Claims (8)
1. A method for determining water production from a single well, comprising:
adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve;
taking the adjusted phase permeability curve as a constraint, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on a geological model of the work area to be detected until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements;
obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure which meet the preset requirements and are obtained after adjustment;
the method comprises the following steps of taking the adjusted phase permeation curve as constraint, adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on a geological model of the work area to be detected until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements, and comprises the following steps:
and applying the adjusted phase permeability curve to a geological model of the work area to be detected, and adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on historical fitting of the total water yield, the single-well gas production and the single-well pressure of the work area to be detected to obtain the adjusted total water yield, the single-well gas production and the single-well pressure.
2. The method of claim 1, wherein after obtaining the single well water production for the work area under test, the method further comprises:
calculating the production capacity of a single well in the work area to be tested;
and carrying out reasonable production allocation of the gas well according to the production capacity of the single well.
3. The method of claim 1, wherein adjusting the reference facies permeability curve based on the established reference well geological model to obtain an adjusted facies permeability curve comprises:
acquiring the single-well water yield, the single-well gas yield, the pressure data and a reference phase permeability curve of a reference well in the work area to be tested;
and applying the reference facies leakage curve to the reference well geological model, and adjusting the reference facies leakage curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies leakage curve.
4. The method of claim 3, wherein obtaining a reference facies permeation curve comprises:
obtaining the phase permeation curves of a plurality of rock core samples in the work area to be tested;
and carrying out normalization processing on the plurality of phase permeation curves to obtain the reference phase permeation curve.
5. The method of claim 1, wherein the reference well geological model is created as follows:
acquiring a data set of the reference well, the data set including at least one of: logging data, seismic data, core data;
and obtaining the reference well geological model by adopting a regression constraint method based on the data set.
6. An apparatus for determining water production from a single well, comprising:
the facies leakage curve determining module is used for adjusting the reference facies leakage curve based on the established reference well geological model to obtain an adjusted facies leakage curve;
the parameter adjusting module is used for adjusting the total water yield, the single-well gas production and the single-well pressure of the work area to be detected based on a geological model of the work area to be detected by taking the adjusted phase-permeation curve as constraint until the total water yield, the single-well gas production and the single-well pressure which are obtained after adjustment meet preset requirements;
the water yield determining module is used for obtaining the single-well water yield of the work area to be measured according to the total water yield, the single-well gas yield and the single-well pressure obtained after adjustment;
the phase-permeation curve determining module comprises:
the parameter acquisition unit is used for acquiring the single-well water yield, the single-well gas yield, the pressure data and the reference phase permeability curve of the reference well in the work area to be detected;
and the curve determining unit is used for applying the reference facies percolation curve to the reference well geological model, and adjusting the reference facies percolation curve based on the single well water yield, the single well gas yield and the historical fitting of the pressure data of the reference well to obtain the adjusted facies percolation curve.
7. The apparatus of claim 6, wherein the apparatus further comprises:
the production capacity calculation module is used for calculating the production capacity of the single well in the work area to be tested after the water yield of the single well in the work area to be tested is obtained;
and the rational production allocation module is used for carrying out rational production allocation of the gas well according to the production capacity of the single well.
8. The apparatus of claim 6, wherein the parameter acquisition unit comprises:
the first obtaining subunit is used for obtaining the infiltration curves of a plurality of rock core samples in the work area to be tested;
and the second acquisition subunit is used for carrying out normalization processing on the plurality of phase permeation curves to obtain the reference phase permeation curve.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992013905A1 (en) * | 1991-01-29 | 1992-08-20 | Biocarbons Corporation | Method for controlling oil reservoir permeability using biomass oil |
| RU2004136866A (en) * | 2004-12-16 | 2006-05-27 | Николай Иванович Сердюк (RU) | DEVICE FOR AUTOMATIC DECOLMATION OF AN OPERATIONAL MULTIPLAYER HYDROGEOLOGICAL WELL |
| CN102221514A (en) * | 2010-12-13 | 2011-10-19 | 中国石油化工股份有限公司 | Joint testing device and method of rheological property of polymer solution and relative permeability of core |
| CN203420702U (en) * | 2013-05-29 | 2014-02-05 | 中国石油大学(北京) | Coal bed gas shaft gas-liquid two-phase flow simulation device |
| CN103645126A (en) * | 2013-12-02 | 2014-03-19 | 西南石油大学 | Determining method for stratum high-temperature high-pressure gas-phase and water-phase relative permeability curve |
| CN103939066A (en) * | 2014-04-04 | 2014-07-23 | 中国石油大学(华东) | Method for determining oil well liquid production capacities by determining water injection capacities of one-injection and multi-production well group |
| CN104018829A (en) * | 2014-05-23 | 2014-09-03 | 中国地质大学（北京） | Method for measuring gas and water relative permeability curve through coal-bed gas well production data |
| CN104504457A (en) * | 2014-12-04 | 2015-04-08 | 中国石油大港油田勘探开发研究院 | Water production gas well productivity prediction method |
| CN106050204A (en) * | 2016-07-11 | 2016-10-26 | 中国海洋石油总公司 | Heavy oil thermal recovery simulation method considering blowhole compression coefficient temperature-sensitive effect |
| CN107169684A (en) * | 2017-07-03 | 2017-09-15 | 中国石油大学(华东) | Commingling production oil reservoir determines the development behavior computational methods under liquid measure working condition |
-
2017
- 2017-10-11 CN CN201710940293.5A patent/CN107965308B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992013905A1 (en) * | 1991-01-29 | 1992-08-20 | Biocarbons Corporation | Method for controlling oil reservoir permeability using biomass oil |
| RU2004136866A (en) * | 2004-12-16 | 2006-05-27 | Николай Иванович Сердюк (RU) | DEVICE FOR AUTOMATIC DECOLMATION OF AN OPERATIONAL MULTIPLAYER HYDROGEOLOGICAL WELL |
| CN102221514A (en) * | 2010-12-13 | 2011-10-19 | 中国石油化工股份有限公司 | Joint testing device and method of rheological property of polymer solution and relative permeability of core |
| CN203420702U (en) * | 2013-05-29 | 2014-02-05 | 中国石油大学(北京) | Coal bed gas shaft gas-liquid two-phase flow simulation device |
| CN103645126A (en) * | 2013-12-02 | 2014-03-19 | 西南石油大学 | Determining method for stratum high-temperature high-pressure gas-phase and water-phase relative permeability curve |
| CN103939066A (en) * | 2014-04-04 | 2014-07-23 | 中国石油大学(华东) | Method for determining oil well liquid production capacities by determining water injection capacities of one-injection and multi-production well group |
| CN104018829A (en) * | 2014-05-23 | 2014-09-03 | 中国地质大学（北京） | Method for measuring gas and water relative permeability curve through coal-bed gas well production data |
| CN104504457A (en) * | 2014-12-04 | 2015-04-08 | 中国石油大港油田勘探开发研究院 | Water production gas well productivity prediction method |
| CN106050204A (en) * | 2016-07-11 | 2016-10-26 | 中国海洋石油总公司 | Heavy oil thermal recovery simulation method considering blowhole compression coefficient temperature-sensitive effect |
| CN107169684A (en) * | 2017-07-03 | 2017-09-15 | 中国石油大学(华东) | Commingling production oil reservoir determines the development behavior computational methods under liquid measure working condition |
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