CN111255414A - Method and device for inhibiting condensate gas reservoir reverse condensation - Google Patents
Method and device for inhibiting condensate gas reservoir reverse condensation Download PDFInfo
- Publication number
- CN111255414A CN111255414A CN202010044585.2A CN202010044585A CN111255414A CN 111255414 A CN111255414 A CN 111255414A CN 202010044585 A CN202010044585 A CN 202010044585A CN 111255414 A CN111255414 A CN 111255414A
- Authority
- CN
- China
- Prior art keywords
- gas
- oil
- gas reservoir
- heating
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/35—Ohmic-resistance heating
- F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
Abstract
A method of inhibiting retrograde condensation in a condensate gas reservoir, the method comprising: monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period; determining the power of a heating resistor by using a preset algorithm according to the gas production rate and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to the preset algorithm; adjusting the actual power of the heating resistor in accordance with the determined power. According to the scheme of the invention, the gas reservoir anti-condensation phenomenon is effectively inhibited and the gas yield of the condensate gas reservoir is stably improved based on heating the resistor arranged in the oil well casing or on the oil pipeline cable.
Description
Technical Field
The present invention relates to the field of petroleum and natural gas exploration and development, and is especially method and apparatus for inhibiting condensate gas reservoir reverse condensation.
Background
The shortage of oil and gas resources is a key problem for stopping the throat of China all the time, and the unconventional oil and gas resources are important directions for the development of the future countries to realize the continuous increase of the oil and gas yield of China. The condensate gas reservoir is an important component of unconventional oil and gas, but the retrograde condensation phenomenon of the condensate gas reservoir, which generally occurs in a near-wellbore area, is a common problem in the development process of a multi-component heavy oil hydrocarbon reservoir. In the process of gas reservoir exploitation, along with the reduction of the pressure near the wellhead, the heavier part in the gas mixture is gradually separated out into liquid which is attached to a rock pore canal, and the gas reservoir yield is influenced. The pressure at the well head can be continuously reduced to form a pressure drop funnel, the pressure drop range is continuously expanded and extends towards the inside of the reservoir, liquid in rock pore channels is separated out and increased, a gas flow channel is blocked, the gas reservoir yield is greatly reduced, and oil gas resources in the gas reservoir cannot be exploited.
At present, methods for increasing the yield of condensate gas reservoirs mainly comprise methods such as pressurization displacement and hydraulic fracturing, but the methods cannot effectively inhibit the occurrence of the retrograde condensation phenomenon, and other methods such as chemical energy heating and well closing can inhibit the retrograde condensation phenomenon to a certain extent, but are troublesome in operation and cannot be artificially controlled in real time. Therefore, how to provide a method which is simple and convenient to operate, effectively inhibits the reverse condensation phenomenon and improves the yield of the condensate gas reservoir is an urgent problem to be solved.
Disclosure of Invention
The application provides a method for inhibiting the retrograde condensation of a condensate gas reservoir, which is based on heating a resistor arranged in an oil well casing or on an oil pipeline cable, and realizes the effective inhibition of the retrograde condensation of the condensate gas reservoir.
The present application provides a method of inhibiting retrograde condensation of a condensate gas reservoir, the method comprising:
monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period;
determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to a preset algorithm;
adjusting the actual power of the heating resistor in accordance with the determined power.
In an exemplary embodiment, the implementation of the position of the heating resistor in the oil well casing or on the oil pipeline cable line according to a preset algorithm includes:
acquiring oil gas components and core parameters of the gas reservoir;
simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters;
and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power.
In an exemplary embodiment, the obtaining hydrocarbon composition and core parameters of a gas reservoir includes:
determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well;
and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method.
In an exemplary embodiment, after determining the position of the heating resistor in the oil well casing or on the oil pipeline cable, the method further includes:
calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor.
In an exemplary embodiment, the determining the power of the heating resistor using a predetermined algorithm based on the gas production and the gas reservoir parameters includes:
calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
In order to solve the above problems, the present invention also provides an apparatus for suppressing retrograde condensation of a condensate gas reservoir, the apparatus comprising: a memory and a processor; the method is characterized in that:
the memory is used for storing a program for inhibiting the condensate gas reservoir from reverse condensation;
the processor is used for reading and executing the program for inhibiting the condensate gas reservoir from being reversely condensed and executing the following operations:
monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period;
determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to a preset algorithm;
adjusting the actual power of the heating resistor in accordance with the determined power.
In an exemplary embodiment, the implementation of the position of the heating resistor in the oil well casing or on the oil pipeline cable line according to a preset algorithm includes:
acquiring oil gas components and core parameters of the gas reservoir;
simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters;
and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power.
In an exemplary embodiment, the obtaining hydrocarbon composition and core parameters of a gas reservoir includes:
determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well;
and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method.
In an exemplary embodiment, after determining the position of the heating resistor in the oil well casing or on the oil pipeline cable, the method further includes:
calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor.
In an exemplary embodiment, the determining the power of the heating resistor using a predetermined algorithm based on the gas production and the gas reservoir parameters includes:
calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
Compared with the related art, the method comprises the following steps: monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period; determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to a preset algorithm; adjusting the actual power of the heating resistor in accordance with the determined power. According to the scheme of the invention, the gas condensate reservoir anti-condensation phenomenon is effectively inhibited based on heating the resistor arranged in the oil well casing or on the oil pipeline cable.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a flow chart of a method of inhibiting retrograde condensation of a condensate gas reservoir according to an embodiment of the present application;
FIG. 2 is a schematic view of an apparatus for suppressing retrograde condensation of a condensate gas reservoir in accordance with an embodiment of the present application;
FIG. 3 is a flow chart of an exemplary method for inhibiting retrograde condensation of a condensate gas reservoir in accordance with an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating an embodiment of the present application for suppressing retrograde condensation in a condensate gas reservoir;
fig. 5 is a schematic diagram illustrating changes in gas reservoir production using a method for suppressing retrograde condensation of a condensate gas reservoir according to an embodiment of the present application.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
Example one
Fig. 1 is a flowchart of a method for suppressing retrograde condensation of a condensate gas reservoir according to an embodiment of the present invention, and the specific implementation process is as follows:
and step 100, monitoring the gas production rate and the gas reservoir parameters of the oil well according to a preset period.
In this embodiment, because the continuous output of oil well, the light hydrocarbon part in the gas reservoir in the pit can reduce gradually, and the heavy hydrocarbon proportion constantly increases, and the oil gas component that also is the gas reservoir changes, and the gas production volume also changes. The monitoring period can be preset according to actual conditions, and the period can be one month, two months, three months and the like.
The gas reservoir parameters include: temperature, pressure, porosity, etc. of the gas reservoir.
And 101, determining the power of the heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters.
In this embodiment, the location of the heating resistor within the well casing or on the oil pipeline cable is determined according to a predetermined algorithm. The predetermined algorithm may be a numerical simulation method, or may be another method.
In an exemplary embodiment, determining the power of the heating resistor using a predetermined algorithm based on the gas production and reservoir parameters comprises: calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
In an exemplary embodiment, the specific implementation of the position of the heating resistor in the oil well casing or on the oil pipeline cable line according to the preset algorithm comprises: acquiring oil gas components and core parameters of the gas reservoir; simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters; and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power. In general, the heating resistor is placed in a casing or on a cable located in the region of the rock with a relatively high porosity. The number of resistors may be set according to the actual condition of the gas reservoir, or the number of the heating points of the resistors, that is, the number of the resistors may be obtained through the above simulation.
In an exemplary embodiment, the obtaining hydrocarbon composition and core parameters of a gas reservoir includes: determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well; and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method. In the embodiment, the real core of the oil well collected in advance by the oil field well drilling is selected, and the oil and gas components can be determined by an experimental measurement method. The specific implementation process is as follows: the method for determining the oil and gas components by the experimental measurement method is the most basic method for determining the oil and gas components by the condensate gas reservoir, and the method can be as follows: and (4) performing chromatographic analysis by collecting fluid in a shaft, and comparing the chromatographic analysis result with a chromatographic chart to obtain the types of the components contained in the core sample and the proportion of each component. The oil gas is a mixture of light hydrocarbons such as methane and ethane and heavy hydrocarbons C12-C15, mainly contains C \ H compounds and also contains impurities such as sulfides. The oil gas components of the condensate gas reservoir can be divided into a mixture of gas and oil, the gas and the liquid can be converted mutually under different pressure and temperature conditions, and the oil gas components are obtained by obtaining the proportion of different hydrocarbons in the oil gas components, so that the proportion of the gas to the liquid is obtained. In this embodiment, the internal structure of the core is scanned by using a micron-sized CT, and the core parameters are obtained by a mercury intrusion method. The specific implementation process comprises the following steps: the internal structure of the core can be scanned by utilizing the micron-sized CT to obtain the internal structure of the core, and the core parameters obtained by an experimental method according to the internal structure of the core comprise permeability, porosity, pressure and the like, and can be obtained by a conventional core experiment comprising a mercury intrusion method.
In an exemplary embodiment, after determining the position of the heating resistor in the oil well casing or on the oil pipeline cable, the method further comprises: calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor. In this embodiment, the resistance position and the initial heating power of the resistance in the oil well casing or on the oil pipeline cable are determined, and the gas reservoir can be heated according to actual conditions.
And 102, adjusting the actual power of the heating resistor according to the determined power.
In this embodiment, if the monitoring period is the first monitoring period, the actual power at this time is the initial heating power; the initial power is adjusted to a determined power adjustment, which is the actual power of the heating resistance. And when the detection period is not the first monitoring period, adjusting the actual power to the determined power.
Example two
In order to solve the above problem, as shown in fig. 2, the present invention also provides an apparatus for suppressing retrograde condensation of a condensate gas reservoir, the apparatus comprising: a memory and a processor;
the memory is used for storing a program for inhibiting the condensate gas reservoir from reverse condensation;
the processor is used for reading and executing the program for inhibiting the condensate gas reservoir from being reversely condensed and executing the following operations:
monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period;
determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to a preset algorithm;
adjusting the actual power of the heating resistor in accordance with the determined power.
In an exemplary embodiment, the implementation of the position of the heating resistor in the oil well casing or on the oil pipeline cable line according to a preset algorithm includes: acquiring oil gas components and core parameters of the gas reservoir; simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters; and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power.
In an exemplary embodiment, the obtaining hydrocarbon composition and core parameters of a gas reservoir includes: determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well; and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method.
In an exemplary embodiment, after determining the position of the heating resistor in the oil well casing or on the oil pipeline cable, the method further includes: calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor.
In an exemplary embodiment, the determining the power of the heating resistor using a predetermined algorithm based on the gas production and the gas reservoir parameters includes: calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
An exemplary embodiment
As shown in fig. 3, an exemplary embodiment of a method of inhibiting retrograde condensation of a condensate gas reservoir:
step 300 determines the oil and gas composition by experimental measurement methods based on pre-collected cores of the oil well.
In the step, the real core of the oil well collected in advance by the oil field well drilling is selected, and the oil gas components are determined by an experimental measurement method. The method for determining the oil and gas components by the experimental measurement method is the most basic method for determining the oil and gas components by the condensate gas reservoir, and the method can be as follows: and (4) performing chromatographic analysis by collecting fluid in a shaft, and comparing the chromatographic analysis result with a chromatographic chart to obtain the types of the components contained in the core sample and the proportion of each component. The oil gas is a mixture of light hydrocarbons such as methane and ethane and heavy hydrocarbons C12-C15, mainly contains C \ H compounds and also contains impurities such as sulfides. The oil gas components of the condensate gas reservoir can be divided into a mixture of gas and oil, the gas and the liquid can be converted mutually under different pressure and temperature conditions, and the oil gas components are obtained by obtaining the proportion of different hydrocarbons in the oil gas components, so that the proportion of the gas to the liquid is obtained.
In this step, the internal structure of the core may be scanned by using a micron-scale CT to obtain the internal structure of the core, and core parameters obtained by an experimental method according to the internal structure of the core include permeability, porosity, pressure, and the like, which are core parameters that can be obtained by a conventional core experiment including a mercury intrusion method.
And step 302, simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters.
In the step, the parameters are input into a numerical simulation module according to the oil gas components and the core parameters of the gas reservoir obtained in the steps 1 and 2, and the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters are obtained through simulation by utilizing a preset algorithm.
Step 303 is to determine the position of the heating resistor in the casing of the oil well or on the cable of the oil pipeline according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and by inputting preset heating power.
In the step, the heating power can be preset according to the relevant geological conditions of the research area and the relevant data of the oil well, the heating power is input into the numerical simulation module, and the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters. In general, the heating resistor is placed in a casing or on a cable located in the region of the rock with a relatively high porosity.
Step 304 determines an initial heating power.
In the step, after the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined, calculating according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters and according to a preset algorithm in a numerical simulation module to obtain correlation curves of different heating powers and gas production; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the resistor.
Step 305 monitors the gas production rate and gas reservoir parameters of the oil well according to a preset period.
In this step, because the continuous output of oil well, the light hydrocarbon part in the gas reservoir in the pit can reduce gradually, and the heavy hydrocarbon proportion constantly increases, also is the oil gas component of gas reservoir changes, and the gas production volume also changes. The monitoring period can be preset according to actual conditions, and the period can be one month, two months, three months and the like.
Step 306 determines the power of the heating resistor using a predetermined algorithm based on the gas production and reservoir parameters.
In this step, the aboveground personnel remotely control the heating power of the heating resistor through a computer, and as shown in fig. 4, the aboveground personnel can remotely monitor the heating resistor in real time and also control and adjust the power of the heating resistor in real time. And determining the power of the heating resistor by using a preset algorithm according to the current gas production and the gas reservoir parameters obtained by monitoring. The implementation process of determining the power of the heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters comprises the following steps: calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters; and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the power of the heating resistor.
Step 307 adjusts the actual power of the heating resistor according to the determined power.
In the step, the heating power is corrected and adjusted according to the gas production and the gas reservoir parameters, and the gas production of the gas reservoir can be improved by adjusting the power. As shown in fig. 5, the gas production of the gas reservoir is greatly improved by heating the gas reservoir resistor.
In the embodiment, the resistance position is set, and the power of the heating resistor is remotely controlled and adjusted, so that the gas reservoir near wellbore area can be heated, the reverse condensation process is effectively inhibited, and the gas reservoir yield is improved. The embodiment has simple operation procedures, simplifies the actual operation procedures at the present stage, and can realize the state of manual remote real-time control.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A method of inhibiting retrograde condensation in a condensate gas reservoir, the method comprising:
monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period;
determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to the preset algorithm;
adjusting the actual power of the heating resistor in accordance with the determined power.
2. A method for suppressing retrograde condensation in a condensate gas reservoir according to claim 1, wherein the implementation of the position of the heating resistor in the oil well casing or on the oil pipeline wireline as determined according to a predetermined algorithm comprises:
acquiring oil gas components and core parameters of the gas reservoir;
simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters;
and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power.
3. The method of inhibiting retrograde condensation in a condensate gas reservoir of claim 2, wherein said obtaining hydrocarbon composition and core parameters of the gas reservoir comprises:
determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well;
and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method.
4. The method of suppressing condensate gas reservoir retrograde condensation of claim 2, wherein the determining the location of the heating resistor within the well casing or on the oil pipeline wireline further comprises:
calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor.
5. The method of suppressing condensate gas reservoir retrograde condensation according to claim 4, wherein said determining the power of the heating resistor using a predetermined algorithm based on the gas production and gas reservoir parameters comprises:
calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
6. An apparatus for inhibiting retrograde condensation of a condensate gas reservoir, the apparatus comprising: a memory and a processor; the method is characterized in that:
the memory is used for storing a program for inhibiting the condensate gas reservoir from reverse condensation;
the processor is used for reading and executing the program for inhibiting the condensate gas reservoir from being reversely condensed and executing the following operations:
monitoring the gas production rate and gas reservoir parameters of the oil well according to a preset period;
determining the power of a heating resistor by using a preset algorithm according to the gas production and the gas reservoir parameters, wherein the position of the heating resistor in the oil well casing or on the oil pipeline cable is determined according to the preset algorithm;
adjusting the actual power of the heating resistor in accordance with the determined power.
7. An apparatus for suppressing retrograde condensation in a condensate gas reservoir according to claim 6, wherein the implementation of the position of the heating resistor in the oil well casing or on the oil pipeline cable according to a predetermined algorithm comprises:
acquiring oil gas components and core parameters of the gas reservoir;
simulating by using a preset algorithm according to the oil gas components and the core parameters of the gas reservoir to obtain the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of an oil well and the gas reservoir parameters;
and determining the position of the heating resistor in the oil well casing or on the oil pipeline cable according to the gas flow and liquid distribution rule in the gas reservoir, the gas production rate of the oil well and the gas reservoir parameters and inputting preset heating power.
8. The apparatus for suppressing retrograde condensation in a condensate gas reservoir of claim 7, wherein said obtaining hydrocarbon composition and core parameters of the gas reservoir comprises:
determining oil gas components by an experimental measurement method according to a pre-collected core of an oil well;
and scanning the internal structure of the rock core by using a micron-sized CT (computed tomography), and obtaining rock core parameters by using a mercury intrusion method.
9. The apparatus for suppressing condensate reservoir retrograde condensation of claim 7, wherein said determining the location of the heating resistor within the well casing or on the oil pipeline wireline further comprises:
calculating to obtain correlation curves of different heating powers and gas production according to the positions of the heating resistors in the oil well casing or on the oil pipeline cable, the oil and gas components and the oil reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the correlation curve as the initial heating power of the heating resistor.
10. The apparatus for suppressing condensate reservoir retrograde condensation of claim 9, wherein said determining the power of the heating resistor using a predetermined algorithm based on said gas production and reservoir parameters comprises:
calculating to obtain correlation curves of different heating powers and gas production rates by utilizing a preset algorithm according to the position of the heating resistor in the oil well casing or on the oil pipeline cable, the gas production rate and the gas reservoir parameters;
and determining the heating power corresponding to the increase of the heating power and the unchanged gas production rate in the relevant curve as the power of the heating resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044585.2A CN111255414B (en) | 2020-01-15 | 2020-01-15 | Method and device for inhibiting condensate gas reservoir reverse condensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044585.2A CN111255414B (en) | 2020-01-15 | 2020-01-15 | Method and device for inhibiting condensate gas reservoir reverse condensation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111255414A true CN111255414A (en) | 2020-06-09 |
| CN111255414B CN111255414B (en) | 2021-06-08 |
Family
ID=70950588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010044585.2A Active CN111255414B (en) | 2020-01-15 | 2020-01-15 | Method and device for inhibiting condensate gas reservoir reverse condensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111255414B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654850Y (en) * | 2003-11-18 | 2004-11-10 | 西安石油大学 | Downhole three-phase power frequency electromagnetic induction heater |
| WO2014011385A1 (en) * | 2012-07-13 | 2014-01-16 | Schlumberger Canada Limited | Methodology and system for producing fluids from a condensate gas reservoir |
| CN105239973A (en) * | 2015-10-28 | 2016-01-13 | 中国石油化工股份有限公司 | Condensate gas reservoir blockage relieving physical simulation experimental device and condensate gas reservoir blockage relieving physical simulation experimental method |
| CN106285594A (en) * | 2016-08-22 | 2017-01-04 | 西安交通大学 | A kind of sand-filling tube combination device and boundary temperature control method thereof |
| CN106596371A (en) * | 2016-12-12 | 2017-04-26 | 西南石油大学 | Retrograde condensation damage experimental evaluation method for depletion type development near-wellbore zone of saturated condensate gas reservoir |
| CN108595875A (en) * | 2018-05-08 | 2018-09-28 | 中国石油天然气集团有限公司 | A kind of method, apparatus and system of determining side water gas condensate reservoir water breakthrough time |
-
2020
- 2020-01-15 CN CN202010044585.2A patent/CN111255414B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654850Y (en) * | 2003-11-18 | 2004-11-10 | 西安石油大学 | Downhole three-phase power frequency electromagnetic induction heater |
| WO2014011385A1 (en) * | 2012-07-13 | 2014-01-16 | Schlumberger Canada Limited | Methodology and system for producing fluids from a condensate gas reservoir |
| CN105239973A (en) * | 2015-10-28 | 2016-01-13 | 中国石油化工股份有限公司 | Condensate gas reservoir blockage relieving physical simulation experimental device and condensate gas reservoir blockage relieving physical simulation experimental method |
| CN106285594A (en) * | 2016-08-22 | 2017-01-04 | 西安交通大学 | A kind of sand-filling tube combination device and boundary temperature control method thereof |
| CN106596371A (en) * | 2016-12-12 | 2017-04-26 | 西南石油大学 | Retrograde condensation damage experimental evaluation method for depletion type development near-wellbore zone of saturated condensate gas reservoir |
| CN108595875A (en) * | 2018-05-08 | 2018-09-28 | 中国石油天然气集团有限公司 | A kind of method, apparatus and system of determining side water gas condensate reservoir water breakthrough time |
Non-Patent Citations (1)
| Title |
|---|
| 何书梅 等: "电磁感应加热技术解除凝析气井近井堵塞的可行性研究", 《天然气地球科学》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111255414B (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2015240829B2 (en) | Optimizing oil recovery and reducing water production in smart wells | |
| Dong et al. | Probabilistic assessment of world recoverable shale-gas resources | |
| WO2017040457A2 (en) | Coning transient multi-rate test | |
| Gupta et al. | Haynesville shale: predicting long-term production and residual analysis to identify well interference and fracture hits | |
| Tao et al. | Permeability estimation for large-scale potential CO2 leakage paths in wells using a sustained-casing-pressure model | |
| CN111255414B (en) | Method and device for inhibiting condensate gas reservoir reverse condensation | |
| Ulyanov et al. | Implementation of the intellectual gas control system for gas lift optimization at Orenburgskoe oilfield | |
| Morozov et al. | Well performance wireless monitoring with stationary intelligent tracer systems on the prirazlomnoye oilfield | |
| Solovyev et al. | Successful application of the intelligent inflow tracers for monitoring of horizontal wells on North Komsomolskoe field | |
| Cheung et al. | A novel approach to interwell tracer design and field case history | |
| Kabir et al. | Water/gas shut-off candidates selection | |
| Rawding et al. | Application of intelligent well completion for controlled dumpflood in West Kuwait | |
| Ibrahim et al. | Appraising unconventional play from mini-frac test analysis, actual field case | |
| Mukmin et al. | Polymer trial using horizontal wells: conceptual well completion design and surveillance planning aspects | |
| Veeken et al. | Early Detection of Gas Well Formation Damage, Water Breakthrough and Liquid Loading by Use of Surface Pressure Build-Up Data | |
| Wehner et al. | CO2 Huff-n-Puff: Initial Results from a Waterflood SSC Reservoir | |
| Zhang et al. | Comprehensive Production Evaluation for Gas Condensate at Early Exploration Stage by Using Downhole Fluid Analysis DFA and Numerical Simulation: Case Study from China Bohai Bay | |
| Archibong et al. | Optimization Study on Inflow Control Devices for Horizontal Wells in Thin Oil Column Reservoirs: A Case Study of a Well in Niger Delta | |
| Harting et al. | Application of Mini-Falloff Test to Determine Reservoir Parameters and Optimize Fracture Designs in a Tight Gas Field | |
| US11740381B2 (en) | Determination of estimated maximum recoverable (EMR) hydrocarbons in unconventional reservoirs | |
| Maut et al. | Subsurface Pressure and Temperature Survey Analysis for Wells on Intermittent Gas Lift: A Field Optimisation Case Study in Upper Assam Shelf Basin | |
| Gasbarri et al. | Water-Production Diagnosis Using Transient Test With Multiphase Flowmeter | |
| Zhang et al. | Applicability of Worldwide CO2 Worldwide Immiscible Flooding and Prediction | |
| Herrera et al. | Gas Blockage Near Wellbore: A Diagnostic Tool for identifying Critical Flow in Oil and Gas Reservoirs | |
| Romadhona et al. | Banyu Urip Reservoir Surveillance Strategy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |