CN109681196B - Low-pressure shale gas well intermittent production management method and system - Google Patents
Low-pressure shale gas well intermittent production management method and system Download PDFInfo
- Publication number
- CN109681196B CN109681196B CN201811482049.XA CN201811482049A CN109681196B CN 109681196 B CN109681196 B CN 109681196B CN 201811482049 A CN201811482049 A CN 201811482049A CN 109681196 B CN109681196 B CN 109681196B
- Authority
- CN
- China
- Prior art keywords
- well
- gas
- shut
- production
- state
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 178
- 238000007726 management method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 21
- 230000000630 rising effect Effects 0.000 claims description 19
- 230000003247 decreasing effect Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 198
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002349 well water Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000476 thermogenic effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a low-pressure shale gas well intermittent production management method, which comprises the following steps: judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters; judging the shut-in type of the gas well in the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters; and comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters, acquiring comparison data, and generating well opening prompt information according to the comparison data. According to the intermittent production management method and system for the low-pressure shale gas well, provided by the invention, various sensor parameters distributed around the gas well are collected through the computer, the accurate judgment on the gas well state and the type of the closed well is realized according to the real-time data and the historical data of the gas well, the prompt of independently opening or closing each gas well can be given when the number of the gas wells is large, the well opening time is mastered, and the economic loss caused by the closed well is reduced to the maximum extent.
Description
Technical Field
The invention relates to the field of oil and gas resource development methods, in particular to a low-pressure shale gas well intermittent production management method and system.
Background
The source of shale gas is biogasified gas, thermogenic gas, which is usually present in free form in natural fissures and pores, or in adsorbed form on the surface of kerogen, clay particles, and also in very small quantities in dissolved form in asphaltenes. Unlike conventional reservoir gas reservoirs, shale is both a source rock for natural gas generation and a reservoir and cap rock for gathering and storing natural gas. The shale gas reservoir has low permeability and high exploitation difficulty, and can be effectively developed by a plurality of methods such as horizontal well drilling, multi-section fracturing technology and the like.
Shale gas is a compact gas reservoir, the capacity needs to be obtained through hydraulic fracturing, the shale gas reservoir has heterogeneity in geology, and the particularity of a gas well is caused in engineering construction, so that the shale gas well has the characteristic of 'one well and one reservoir', the production characteristics of each well are different, a 'one well and one strategy' mode is adopted in production management of the gas well, but the shale gas well has the quantity of more than 200 wells at present, and the production of the shale gas is inevitably seriously influenced due to the serious shortage of managers. In addition, management is carried out manually, and management refinement is difficult to guarantee, especially under the condition that the number of gas wells is large. Secondly, along with the discharge of the fracturing fluid in the whole production process of the shale gas well, the backflow of the fracturing fluid (namely, the gas well water production) can cause the instability of the gas well production, and especially the discharge of the backflow fluid (namely, the gas well water production) in the later stage of the gas well production becomes a main contradiction influencing the stable production of the gas well. Before each technological measure and production increase measure are constructed, an intermittent production mode (namely, the on-off of a gas well is controlled) is adopted for management, so that the gas well needs to be shut down and opened irregularly. Well shut-in needs to be avoided in time, well opening opportunities need to be appropriate, and dependence on manual work, a large number of gas wells can not be managed effectively at all.
Disclosure of Invention
In view of the above, it is desirable to provide a method and system for intermittent production management of low-pressure shale gas wells in response to at least one of the above-mentioned problems.
A low-pressure shale gas well intermittent production management method, adapted to be executed in a computing device, comprising the steps of:
judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters;
judging the shut-in type of the gas well under the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters; comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information according to the comparison data;
or judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters, and generating well closing prompt information according to the judged production stage type and the production characteristic parameters corresponding to the production stage type.
In one embodiment, the gas well production state parameters comprise gas well production time, a switch well operation interval period and a last gas well shut-in remark; the well shut-in state characteristic parameters comprise production pressure data, pressure transmission data, accumulated water yield, accumulated gas yield, daily water yield and daily gas yield.
In one embodiment, the production phase types include a gas well diminishing production phase, an intermittent production phase; the well closing types in the well opening state comprise geological factor well closing, engineering factor well closing and management factor well closing.
Further, the step of judging the shut-in type of the gas well in the decreasing production stage in the shut-in state specifically includes:
judging whether the difference value between the production pressure and the pressure transmission is smaller than a preset pressure difference value or not;
judging whether the ratio of the accumulated water produced by the single well to the accumulated gas is in a preset water-gas ratio numerical range or not;
judging whether the daily gas production of the single well is in a preset daily gas production numerical range or not;
and judging the well closing type as one of natural decreasing well closing, production system well closing or high-yield well closing.
Further, the step of judging the shut-in type of the gas well in the shut-in state further includes: judging that the daily gas production of the single well is less than or equal to the preset daily gas production, and further judging that the difference value between the production pressure of the single well and the pressure transmission is less than a preset difference range;
and judging the well closing type as a natural decreasing well closing type.
Further, the step of judging the shut-in type of the gas well in the intermittent production stage in the shut-in state specifically includes:
judging whether the daily water yield or the water-gas ratio of the gas well is in a preset range or not;
and judging whether the daily gas production of the single well is in a preset daily gas production numerical range.
In one embodiment, the step of generating the well opening prompt information according to the comparison data specifically includes:
judging the type of the gas well shut-in according to the characteristic parameter of the shut-in state and the last gas well shut-in remark;
for the geological factor well closing gas well, judging that the accumulated water-gas ratio is smaller than the preset accumulated water-gas ratio, and simultaneously, generating well closing maintaining prompt information when the well closing pressure rising amplitude value is larger than the preset pressure rising value, or,
according to the well closing state characteristic parameters, judging that the accumulated water-gas ratio is smaller than a preset accumulated water-gas ratio, and meanwhile, judging that the well closing pressure rising amplitude value is smaller than a preset pressure rising value, generating well opening prompt information, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening yield suggestions;
according to the well closing state characteristic parameters, judging that the accumulated water vapor ratio is larger than a preset accumulated water vapor ratio, and generating well closing maintaining prompt information or generating well closing maintaining prompt information when the well closing time in the well closing state characteristic parameters is smaller than a preset well closing time
And according to the well closing state characteristic parameters, judging that the accumulated water-gas ratio is greater than a preset accumulated water-gas ratio, and meanwhile, generating well opening prompt information when the well closing time in the well closing state characteristic parameters is greater than a preset well closing time, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening yield suggestions.
The invention also provides a low-pressure shale gas well intermittent production management system which comprises a processor and a control module, wherein the processor is suitable for realizing each instruction; and a storage device adapted to store a plurality of instructions, the instructions adapted to be loaded and executed by a processor to:
judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters;
judging the shut-in type of the gas well in the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters; comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information according to the comparison data;
or judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters, and generating well closing prompt information according to the judged production stage type and the production characteristic parameters corresponding to the production stage type.
According to the intermittent production management method and system for the low-pressure shale gas well, provided by the invention, various sensor parameters distributed around the gas well are collected through the computer, the accurate judgment on the gas well state and the type of the closed well is realized according to the real-time data and the historical data of the gas well, the prompt of independently opening or closing each gas well can be given when the number of the gas wells is large, the water logging of the gas well is avoided in time, the well opening time is mastered, the liquid-carrying production of the gas well after the well opening is ensured, and the economic loss caused by the well closing is reduced to the maximum extent.
Drawings
FIG. 1 is a flow chart of a method for low pressure shale gas well intermittent production management methodology in accordance with an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for generating a prompt message after a production phase is determined according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for intermittent production management of a low pressure shale gas well according to another embodiment of the present invention;
fig. 4 is a schematic flow chart of a production method of the gas well shut-in type and well opening prompt information in an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In an embodiment of the present invention, a method for managing intermittent production of a low-pressure shale gas well is provided, which is suitable for being executed in a computing device, as shown in fig. 1, and includes the following steps:
step S100: and judging the gas well state to be an open-hole state or a closed-hole state according to the collected gas well production state parameters. A plurality of parameters are generated in the production process of the low-pressure shale gas, wherein the gas well state parameters representing the production state of the gas well comprise the production time of the gas well and the interval period of well switching operation; the well shut-in state characteristic parameters comprise production pressure data, pressure transmission data, accumulated water yield, accumulated gas yield, daily water yield and daily gas yield. Firstly, determining the current gas well state, specifically the open-hole state or the close-hole state, and then specifically giving out whether to close the gas well in the open-hole state or not by analyzing the dynamic gas well production state parameters, or for the gas well in the close-hole state, according with the production requirement after a period of time along with the change of the production condition, automatically opening the well, or still keeping the close-hole state. Therefore, the production management system corresponding to the method comprises a well opening prompt function module and a well closing prompt function module, and the well opening prompt function module and the well closing prompt function module are used for automatically judging the type of the shale well closing and making a well opening prompt or a well closing prompt according to the well closing type. Further, the well closing prompt function module comprises a shale gas well production type judgment unit, a low-pressure early warning unit and a well closing prompt unit: the type judgment unit is used for automatically judging in the background, and judging the gas well which enters a low-pressure state for the first time and the gas well which is in the low-pressure state for a long time through parameters. The low-pressure early warning unit judges the low-pressure reason according to the parameters aiming at the gas well which enters the low-pressure state for the first time, gives corresponding suggestions while performing low-pressure early warning, can display the suggestions in a list form, and distinguishes early warning types by different colors. And the well closing prompt unit gives a well closing prompt for the gas well in a low-pressure state for a long time according to the current production parameter and the preset well closing prompt parameter, and can also display the well closing prompt in a list form. The well opening prompting module comprises a well closing judging type and a well opening prompting module, and the well closing type judging unit automatically judges the well closing type of the gas well in the well closing state according to the well closing state, the collected well closing state characteristic parameters and a judging strategy preset by a technician, wherein the content of the judging strategy comprises judging keywords, judging type limits and the like. And on the basis of judging the type of the shut-in well, the well-opening prompting unit only aims at the gas well shut-in due to geological factors, compares the gas well characteristic parameters corresponding to the type of the shut-in well with the preset gas well characteristic parameters, acquires comparison data, generates well-opening prompting information according to the comparison data, and displays the well-opening prompting information in a list form.
Step S200: and judging the shut-in type of the gas well under the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters. After the gas well state and the well closing type are judged through the step S100 and the step S200, the gas well needing to be subjected to early warning can be selected, not all wells are judged, the production stage type comprises a gas well decreasing production stage and an intermittent production stage, and the well closing prompt is only carried out on the gas well of the intermittent production well, so that the system judgment efficiency is improved. And judging that the gas well is not in the intermittent production stage according to the gas well production characteristic parameters, and performing the following judgment and information generation according to the characteristic parameters of the gas well decreasing production stage:
judging whether the difference value between the production pressure and the pressure output of the gas well in the decreasing stage is smaller than a preset pressure difference value or not;
judging whether the ratio of the water accumulated in the single well to the gas accumulated in the single well is in a preset water-gas ratio value range or not;
judging whether the daily gas production of the single well is within a preset daily gas production numerical range or not;
judging whether the water-gas ratio is within a preset water-gas ratio range or not;
and judging whether the shut-in time or the shut-in pressure rising amplitude value is in a preset range.
According to the judgment of the aspects, the shut-in well type is judged to be one of natural decreasing shut-in well, production system shut-in well or high-production well shut-in well. More specifically, the step of judging the shut-in type of the gas well in the shut-in state specifically includes: and judging that the difference value of the production pressure and the pressure transmission is smaller than a preset pressure difference value, the ratio of the accumulated water production to the accumulated gas production of the single well is smaller than a preset water-gas ratio, the daily gas production of the single well is smaller than or equal to a preset daily gas production, the accumulated gas production of the single well is larger than the preset accumulated gas production, further judging that the difference value of the production pressure and the pressure transmission is smaller than a second preset pressure difference value, and judging the type of the shut-in well as a natural decreasing shut-in well.
Or, further preferably, the step of judging the shut-in type of the gas well in the shut-in state further includes: and judging that the daily gas production of the single well is greater than the preset daily gas production, and the production pressure and the pressure transmission difference are smaller than the secondary preset pressure difference value, generating a low-pressure early warning of a production system, further judging that the daily gas production of the single well is smaller than the preset daily gas production, and judging the type of the shut-in well as the type of the production system. After the low-pressure early warning of the production system is generated, the prompt of adjusting the system can be made according to the early warning information.
And when the ratio of the accumulated water production to the accumulated gas production of a single well is more than or equal to the preset water-gas ratio, judging that the daily gas production is less than or equal to other preset daily gas production, firstly, sending out a low-pressure early warning of the high-yielding well, and giving out an early warning that the shut-in type is the high-yielding well type. Of course, when the type is judged, more detailed information can be added into the judgment information, such as further judging the ratio of the current water production to the current gas production of the single well, the numerical range of the differential pressure of the oil jacket and the numerical range of the daily gas production.
Step S300: and comparing the gas well characteristic parameters corresponding to the well closing type with the preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information or well closing prompt information according to the comparison data. The above method steps are explained in more detail by way of example, as shown in fig. 2:
when the difference value between the production pressure and the output pressure is less than 1MPa, the gas well enters a low-pressure stage, the gas well is firstly judged whether to enter the low-pressure stage for the first time or to be in the low-pressure stage for a long time, namely an intermittent production well, the gas well entering the low-pressure stage for the first time (namely the gas well in the decreasing production stage of the gas well) is subjected to a ratio of single-well water production to gas production, and when the water-gas ratio is less than 5, the well closing type can be basically judged to be one of a natural decreasing type, a reservoir influence type and a production system type. And further judging the daily gas production, when the daily gas production is less than or equal to 6 ten thousand square/day, if so, indicating that the shut-in type of the well is a natural decreasing type, and for the gas well of the type, when the production pressure and the pressure transmission difference are less than 0.5MPa, performing natural decreasing low-pressure early warning, and simultaneously acquiring other related parameters according to needs, such as analyzing the range of the water-gas ratio, and acquiring different natural decreasing shut-in early warnings. And when the gas well is judged to be an intermittent production well, judging whether the daily water production or the water-gas ratio is in a corresponding range, and when the average water production is less than 1 square or the water-gas ratio is less than 0.2 square/ten thousand, giving a well closing prompt when the daily gas production is less than 2 ten thousand square/day. The flow of other types of determination and warning information generation methods is shown in fig. 2.
In one embodiment, as shown in fig. 3, since it can be determined in step S100 that the gas well state is an open well state, the method for managing intermittent production of a low-pressure shale gas well further includes the following steps:
step S200': and judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters.
Step S300': and judging the corresponding well closing type according to the judged production stage type and the production characteristic parameter corresponding to the production stage type, and then generating well closing prompt information or well opening prompt information in a targeted manner. Preferably, the well shut-in types in this case include geological factor well shut-in, engineering factor well shut-in and management factor well shut-in.
In addition, the step of generating the well opening prompt information in the step S300' specifically includes: and according to the production characteristic parameters, judging that the accumulated water-gas ratio is smaller than a preset accumulated water-gas ratio and the well shut-in pressure rising amplitude value is larger than a preset pressure rising value, and generating well shut-in maintaining prompt information, or according to the production characteristic parameters, judging that the accumulated water-gas ratio is smaller than the preset accumulated water-gas ratio and the well shut-in pressure rising amplitude value is smaller than the preset pressure rising value, and generating well opening prompt information.
And according to the production characteristic parameters, judging that the accumulated water-gas ratio is greater than a preset accumulated water-gas ratio, and meanwhile, generating well closing maintaining prompt information when the well closing time in the production characteristic parameters is less than a preset well closing time, or according to the production characteristic parameters, judging that the accumulated water-gas ratio is greater than the preset accumulated water-gas ratio, and meanwhile, generating well opening prompt information when the well closing time in the production characteristic parameters is greater than the preset well closing time.
As shown in fig. 4, in order to distinguish the operation process of the gas well between the open-hole state and the closed-hole state, the closed-hole state characteristic parameter and the production characteristic parameter are respectively defined, and the two parameters actually have the same subentry parameter. The method can be used for carrying out well opening and closing prompt management and control according to parameters such as production characteristic parameters or well closing state characteristic parameters acquired by a computer, and can be used for further detailed management in a mode of manually inputting parameters, for example, inputting notes in the same day into a system, such as parameters or states commonly seen in the field, such as 'level with input pressure', 'large water yield', 'maintenance', 'sale' and well closing information, and the like, automatically judging that the well is in a manual maintenance stage according to conditions, prompting that the well is not provided with a well opening condition, and displaying the number of the well at the same time.
The above method steps are explained in more detail by way of example, as shown in fig. 4:
the method comprises the steps of judging the type of a shut-in well according to keywords in the remark when the gas well with the shut-in well is remarked in the daily report of the gas field, judging that the shut-in well is closed by geological factors when the keywords are equal to the input pressure, judging that the shut-in well is closed by engineering factors if the keywords are maintenance keywords, not judging the gas well with the shut-in well by the engineering factors, further judging whether the gas well needs to be opened or not when the gas well judges that the ratio of the accumulated water and the accumulated gas of the gas well is judged, judging whether the pressure rising amplitude is smaller than 0.05MPa/h or not when the ratio of the accumulated water and the accumulated gas is smaller than 4, judging the ratio of the daily water and the daily gas of the gas well when the pressure rising amplitude is smaller than 0.05MPa, and suggesting that the gas well is opened by 6 square/day when the ratio of the daily water and the gas of the gas well is smaller than 0.2.
The intermittent production management method for the low-pressure shale gas well can be executed on a computer, automatic detection, automatic judgment and automatic prompt can be realized for a huge amount of shale gas well groups, and an operator can open and close the corresponding well according to the prompt, keep the well open or close, and realize automatic intermittent production management on the low-pressure shale gas well.
The invention also provides a low-pressure shale gas well intermittent production management system which comprises a processor and a control module, wherein the processor is suitable for realizing each instruction; and a storage device adapted to store a plurality of instructions, the instructions adapted to be loaded and executed by the processor to:
judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters;
judging the shut-in type of the gas well in the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters;
and comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information or well closing prompt information according to the comparison data.
Further, the low-pressure shale gas well intermittent production management system is also suitable for executing the following steps:
judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters;
and generating well opening prompt information or well closing prompt information according to the judged production stage type and the production characteristic parameters corresponding to the production stage type.
The aforementioned intermittent production management system for the low-pressure shale gas well can perform the aforementioned intermittent production management method for the low-pressure shale gas well in detail, including various detailed method steps, which are not described herein again since they are already described in the foregoing paragraphs. In addition, the system can divide multi-user permissions including parameter modification, result viewing, execution feedback permission and the like through the account number.
In addition, the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (6)
1. A low-pressure shale gas well intermittent production management method suitable for being executed in computing equipment is characterized by comprising the following steps of:
judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters;
judging the shut-in type of the gas well in the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters; comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information according to the comparison data;
or judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters, and generating well closing prompt information according to the judged production stage type and the production characteristic parameters corresponding to the production stage type;
the well closing types of the gas well in the well closing state comprise geological factor well closing, engineering factor well closing and management factor well closing; the production phase types comprise a gas well decreasing production phase and an intermittent production phase;
the step of generating well opening prompt information according to the comparison data specifically comprises the following steps:
judging the type of the gas well shut-in according to the characteristic parameters of the shut-in state and the last gas well shut-in remark;
for the geological factor shut-in gas well, judging that the accumulated water-gas ratio is smaller than a preset accumulated water-gas ratio and the shut-in pressure rising amplitude value is larger than a preset pressure rising value, generating well shut-in maintaining prompt information, or,
according to the well closing state characteristic parameters, judging that the accumulated water-gas ratio is smaller than a preset accumulated water-gas ratio, and meanwhile, judging that the well closing pressure rising amplitude value is smaller than a preset pressure rising value, generating well opening prompt information, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening yield suggestions;
according to the shut-in state characteristic parameter, judging that the accumulated water vapor ratio is larger than a preset accumulated water vapor ratio, and simultaneously generating well shut-in maintaining prompt information or generating well shut-in maintaining prompt information when the well shut-in time in the shut-in state characteristic parameter is smaller than a preset well shut-in time
And according to the well closing state characteristic parameters, judging that an accumulated water-gas ratio is greater than a preset accumulated water-gas ratio, and meanwhile, generating well opening prompt information when the well closing time in the well closing state characteristic parameters is greater than a preset well closing time, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening output suggestions.
2. The method for managing intermittent production of a low-pressure shale gas well as claimed in claim 1 wherein the gas well production status parameters include gas well production time, well switch operation interval period and last gas well shut-in notes; the shut-in state characteristic parameters comprise production pressure data, pressure transmission data, accumulated water yield, accumulated gas yield, daily water yield and daily gas yield.
3. The method for intermittently producing and managing the low-pressure shale gas well as claimed in claim 2, wherein the step of judging the shut-in type of the gas well at the decreasing production stage in the shut-in state specifically comprises the following steps:
judging whether the difference value between the production pressure and the pressure transmission is smaller than a preset pressure difference value or not;
judging whether the ratio of the accumulated water produced by the single well to the accumulated gas is in a preset water-gas ratio numerical range or not;
judging whether the daily gas production of the single well is in a preset daily gas production numerical range or not;
and judging the well closing type as one of natural decreasing well closing, production system well closing or high-yield well closing.
4. The method for managing intermittent production of the low-pressure shale gas well as claimed in claim 3, wherein the step of determining the shut-in type of the gas well in the shut-in state further comprises:
judging that the daily gas production of the single well is less than or equal to the preset daily gas production, and further judging that the difference value between the production pressure of the single well and the pressure transmission is less than a preset difference range;
and judging the well closing type as a natural decreasing well closing type.
5. The method for managing intermittent production of the low-pressure shale gas well as claimed in claim 2, wherein the step of determining the shut-in type of the gas well in the intermittent production stage in the shut-in state further comprises:
judging whether the daily water yield or the water-gas ratio of the gas well is in a preset range or not;
and judging whether the daily gas production of the single well is in a preset daily gas production numerical range.
6. The intermittent production management system of the low-pressure shale gas well is characterized by comprising a processor, a data processing unit and a data processing unit, wherein the processor is suitable for realizing instructions; and a storage device adapted to store a plurality of instructions, the instructions adapted to be loaded and executed by the processor to:
judging whether the gas well state is an open-hole state or a closed-hole state according to the collected gas well production state parameters;
judging the shut-in type of the gas well under the shut-in state according to the shut-in state and the collected shut-in state characteristic parameters; comparing the gas well characteristic parameters corresponding to the well closing type with preset gas well characteristic parameters to obtain comparison data, and generating well opening prompt information according to the comparison data;
or judging the production stage type of the gas well according to the well opening state and the collected gas well production characteristic parameters, and generating well closing prompt information according to the judged production stage type and the production characteristic parameters corresponding to the production stage type;
the well closing types of the gas well in the well closing state comprise geological factor well closing, engineering factor well closing and management factor well closing; the production phase types comprise a gas well decreasing production phase and an intermittent production phase;
the step of generating well opening prompt information according to the comparison data specifically comprises the following steps:
judging the type of the gas well shut-in according to the characteristic parameters of the shut-in state and the last gas well shut-in remark;
for the geological factor well closing gas well, judging that the accumulated water-gas ratio is smaller than the preset accumulated water-gas ratio, and simultaneously, generating well closing maintaining prompt information when the well closing pressure rising amplitude value is larger than the preset pressure rising value, or,
according to the well closing state characteristic parameters, judging that the accumulated water-gas ratio is smaller than a preset accumulated water-gas ratio, and meanwhile, judging that the well closing pressure rising amplitude value is smaller than a preset pressure rising value, generating well opening prompt information, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening yield suggestions;
according to the shut-in state characteristic parameter, judging that the accumulated water vapor ratio is larger than a preset accumulated water vapor ratio, and simultaneously generating well shut-in maintaining prompt information or generating well shut-in maintaining prompt information when the well shut-in time in the shut-in state characteristic parameter is smaller than a preset well shut-in time
And according to the well closing state characteristic parameters, judging that an accumulated water-gas ratio is greater than a preset accumulated water-gas ratio, and meanwhile, generating well opening prompt information when the well closing time in the well closing state characteristic parameters is greater than a preset well closing time, judging that the water-gas ratio is in a preset water-gas ratio range, and giving well opening output suggestions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482049.XA CN109681196B (en) | 2018-12-05 | 2018-12-05 | Low-pressure shale gas well intermittent production management method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482049.XA CN109681196B (en) | 2018-12-05 | 2018-12-05 | Low-pressure shale gas well intermittent production management method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109681196A CN109681196A (en) | 2019-04-26 |
| CN109681196B true CN109681196B (en) | 2023-01-24 |
Family
ID=66187078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811482049.XA Active CN109681196B (en) | 2018-12-05 | 2018-12-05 | Low-pressure shale gas well intermittent production management method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681196B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027382B (en) * | 2020-08-18 | 2023-02-10 | 陕西中良智能科技有限公司 | Machine learning device, intermittent gas well switching intelligent control system and control method |
| CN112228053B (en) * | 2020-11-06 | 2024-03-01 | 中国石油天然气股份有限公司 | Method for optimizing open time of intermittent well of tight gas reservoir |
| CN115419385B (en) * | 2022-10-20 | 2023-09-15 | 西安安森智能仪器股份有限公司 | Intelligent production adjusting method for natural gas well |
| CN116432975B (en) * | 2023-04-23 | 2023-09-19 | 重庆万普隆能源股份有限公司北京分公司 | Exploitation management method, device, equipment and medium of shale gas multi-station platform |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970991B (en) * | 2006-12-06 | 2010-05-19 | 中国石油大学(北京) | Method for metering oil production yield and analyzing and optimizing operating condition of oil well, and system thereof |
| CN102444396B (en) * | 2012-01-04 | 2016-08-03 | 李向东 | A kind of natural gas production method |
| CN204116985U (en) * | 2014-09-17 | 2015-01-21 | 中国石油天然气股份有限公司 | The batch production opertaing device of gas well |
| CN204457600U (en) * | 2014-11-17 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of individual well automatic control switch well system |
| CN107780885B (en) * | 2016-08-24 | 2020-05-08 | 中国石油天然气股份有限公司 | Method and device for intelligently switching on and off well |
| CN108614902B (en) * | 2016-12-09 | 2021-06-22 | 中国石油化工股份有限公司 | Shale gas well production data analysis method with changed production system |
| CN107237614A (en) * | 2017-08-04 | 2017-10-10 | 中国石油化工股份有限公司华北油气分公司 | A kind of method of aqueous tight gas reservoir gas well water pumping gas production |
| CN108765889B (en) * | 2018-04-17 | 2020-08-04 | 中国石油集团安全环保技术研究院有限公司 | Oil and gas production operation safety early warning method based on big data technology |
-
2018
- 2018-12-05 CN CN201811482049.XA patent/CN109681196B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109681196A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109681196B (en) | Low-pressure shale gas well intermittent production management method and system | |
| US9745833B2 (en) | Optimizing oil recovery and reducing water production in smart wells | |
| SA521421945B1 (en) | Fracturing Operations Controller | |
| BenDakhlia et al. | Inflow performance relationships for solution-gas drive horizontal wells | |
| Kim et al. | Integrated capacitance-resistance model for characterizing waterflooded reservoirs | |
| CN109882163A (en) | A kind of PRODUCTION FORECASTING METHODS for compact oil reservoir pressure break horizontal well | |
| Lacayo et al. | Pressure Normalization of Production Rates Improves Forecasting Results | |
| Prakasa et al. | Novel application of capacitance-resistance model for reservoir characterisation and zonal, intelligent well control | |
| Su et al. | Coupling production and injection systems with multiple reservoir models: A novel method of optimizing development strategies in a mature giant oilfield | |
| CN108952676A (en) | A kind of shale gas reservoir heterogeneity evaluation method and its device | |
| CN112101625A (en) | Shale gas well production dynamic prediction method and system | |
| Zhou et al. | Analytical reservoir simulation and its applications to conventional and unconventional resources | |
| Xiao et al. | A new method for the determination of gas condensate well production performance | |
| Ahn et al. | A hydraulic fracture network propagation model in shale gas reservoirs: parametric studies to enhance the effectiveness of stimulation | |
| Al Kalbani et al. | NIMR fields high permeability propped fracturing case studies and lessons learnt | |
| Rafiei | Improved oil production and waterflood performance by water allocation management | |
| Rahman et al. | Determination of stimulated reservoir volume SRV during fracturing: A data-driven approach to improve field operations | |
| RU2745684C1 (en) | Method of maintaining a safe range of fracture conductivity when putting a well with hydraulic fracturing into operation | |
| CN111852466B (en) | Method for shale gas well scale production allocation and pipe network operation optimization | |
| Sitnikov et al. | Proactive block-factor analysis of oil field development | |
| Gamal et al. | An approach for determination of the economically optimal production controlling parameters from water drive oil reservoirs | |
| Naime et al. | Leveraging the use of real-time downhole pressure data, pressure and rate transient analyses to enhance reservoir characterization and expedite history matching with numerical simulation | |
| CN114859018B (en) | Performance test method, device and equipment for oil test well working fluid and storage medium | |
| CN112360446B (en) | Method for judging gas well type based on gas well production dynamic index system | |
| Madray et al. | Integrated field modelling of the MISKAR field |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211216 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 408000 No. 6 Hefeng Avenue, Fuling District, Chongqing Applicant before: SINOPEC CHONGQING FULING SHALE GAS EXPLORATION AND DEVELOPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230804 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC CHONGQING FULING SHALE GAS EXPLORATION AND DEVELOPMENT Co.,Ltd. Address before: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. |