CN105804701B - A kind of autocontrol method opened between coal bed gas well - Google Patents
A kind of autocontrol method opened between coal bed gas well Download PDFInfo
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- CN105804701B CN105804701B CN201610154841.7A CN201610154841A CN105804701B CN 105804701 B CN105804701 B CN 105804701B CN 201610154841 A CN201610154841 A CN 201610154841A CN 105804701 B CN105804701 B CN 105804701B
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- well
- opened
- coal bed
- bed gas
- autocontrol method
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
Abstract
The present invention provides the autocontrol method opened between a kind of coal bed gas well, belongs to cbm development field.This method opens technology as theoretical foundation between coal bed gas well, relies on automated system, passes through the critical value of ETAD expected time of arrival and departure or flowing bottomhole pressure (FBHP) between automatically-monitored interface setting, you can realize the automatic start-stop of oil pumper.Solve including：Between open procedure how to realize the problem of automatically controlling；Between stream pushes back a liter problem caused by power failure in open procedure；Because pressure gauge extremely caused by flowing bottomhole pressure (FBHP) unusual fluctuations problem, present invention reduces labor intensity, improves operating efficiency, and automatically controlling for being opened between coal bed gas well provides new approaches.
Description
Technical field
The invention belongs to cbm development engineering field, is related to the autocontrol method opened between a kind of coal bed gas well.
Background technology
The automatic control technology core opened between coal bed gas well is PLC control technology, at this stage PLC technology industrial production from
Dynamic control field is widely used, comparative maturity, has simple in construction, convenient, the highly reliable, strong interference immunity of programming
The characteristics of.Therefore, this autocontrol method opens technology as theoretical model using PLC controls as core using, and one is formed by studying
The autocontrol method opened between set coal bed gas well.
《Automatic control technology is taken out between oil pumper》A kind of automatic control technology is disclosed, it is stable using single-chip microcomputer as core
Property and logicality it is poor, also not pair between open procedure the problems such as having a power failure propose a solution, the present invention with《It is drawn between oil pumper
Dynamic control technology》Difference is：1st, the control core opened between being mentioned in paper is single-chip microcomputer, and the control core of the present invention
For PLC；PLC has the characteristics that stability relative to single-chip microcomputer, programs more convenient, strong interference immunity.2nd, by the article pointed out
Realize that takes out between oil pumper automatically controls and need to install automatically controlled gaseous pulse flushing device in well head.And the present invention is without additionally increase control dress
Put.3rd, paper also not pair between open procedure the problems such as having a power failure propose a solution.The present invention with《Open procedure automatic control between oil well
Energy-conservation demonstration》Difference is：1st, automatically controlling of being opened between how realizing is not described for paper.2nd, the paper is not right
Between the thinking that automatically controls opened be specifically described.
The problems such as running into power failure, flowing bottomhole pressure (FBHP) unusual fluctuations in automatic control process is opened between this two papers pair to be all not known
Specific practice, also not pair between the thinking that automatically controls opened be described in detail, it is impossible to ensure that coal bed gas well was automatically controlled opening
Even running in journey.
Based on above technical problem, the invention provides the autocontrol method opened between a kind of coal bed gas well, it is right that it passes through
Technical know-how research is opened between coal bed gas well, and manufacturing parameter is analyzed in open procedure between coal bed gas well, that is opened between proposition automatically controls
Program principle, the autocontrol method opened between a set of coal bed gas well is established, and the power cut problem occurred in open procedure between being directed to,
Flowing bottomhole pressure (FBHP) unusual fluctuations problem proposes resolving ideas, ensure that steady fortune of the coal bed gas well in automatic control process is opened
OK.
The content of the invention
To achieve the above object, the present invention adopts the following technical scheme that：A kind of autocontrol method opened between coal bed gas well,
Characterized in that, the control method is opened using between the autocontrol method and implementation " critical value method " for implementing to drive a well between " Time Method "
The autocontrol method two ways of well, which is entered, in the ranks to be opened, wherein, the autocontrol method for implementing to drive a well between " Time Method " is to control
System stream pressure is core, ETAD expected time of arrival and departure between being determined by calculating analysis；The autocontrol method for implementing to drive a well between " critical value method " is pair
In the well of tripping in pressure bomb, declined according to flowing bottomhole pressure (FBHP) or rise amplitude determines the critical value of start and stop well pressure, between implementation
Open.
Further, preferably, the autocontrol method to be driven a well between the implementation " Time Method " is specifically：Operating personnel exist
After host computer input start and stop well time command, after PLC collects the instruction, return to host computer and carry out time synchronized, work as the time
After synchronization, PLC carries out operational analysis, execute instruction, and the instruction feedback to oil pumper is carried out into automatic start-stop, is opened between realization
Automatically control.
Further, preferably, it is described implement the autocontrol method that drives a well between " critical value method " and have be：Operating personnel
After host computer inputs start and stop well pressure value, after PLC reads the pressure value of instruction regulation start and stop well, action planning is carried out,
The instruction feedback to oil pumper is subjected to automatic start-stop, that is opened between realization automatically controls.
Further, preferably, it specifically comprises the following steps：
Step 1, the ancient 4-120 wells in Changzhi coal bed gas branch company producing well open experiment between carrying out automatically；
Step 2, the automatic control program opened between being write to PLC in the well Automated condtrol cabinet；
Step 3, the upper computer software interface opened between establishment is automatic；
Step 4, enter automatically controlling of in the ranks opening according to classification is opened between corresponding；
Step 5, scene carry out power failure experiment, check whether host computer according to technical scheme performs alarm prompt and urgent
Safeguard measure；
Step 6, scene carry out pressure gauge transmission abnormality experiment, check whether host computer according to technical scheme performs the " time
The autocontrol method switching opened between method ", and make alarm prompt.
The beneficial effects of the present invention are：
The autocontrol method opened between a kind of coal bed gas well provided by the invention, it is by managing opening technology coal bed gas well
Analyze, the automatic control program principle opened between proposition, establish a set of by manufacturing parameter in open procedure between research, and coal bed gas well
The autocontrol method opened between coal bed gas well, and the power cut problem occurred in open procedure between being directed to, flowing bottomhole pressure (FBHP) unusual fluctuations are asked
Topic proposes resolving ideas, ensure that even running of the coal bed gas well in automatic control process is opened.
Brief description of the drawings
Fig. 1 is the theory structure schematic diagram of autocontrol method opened between a kind of coal bed gas well of the present invention.
Embodiment
Come to carry out the present invention detailed description below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
As shown in figure 1, the present invention provides the autocontrol method opened between a kind of coal bed gas well, the control method is using implementation
The autocontrol method two ways to be driven a well between the autocontrol method to be driven a well between " Time Method " and implementation " critical value method " is carried out
Between open, wherein, it is using controlling stream pressure as core to implement the autocontrol method that drives a well between " Time Method ", passes through and calculates analysis and determine
Between ETAD expected time of arrival and departure；The autocontrol method for implementing to drive a well between " critical value method " is the well for tripping in pressure bomb, according to shaft bottom
Stream drops or rise amplitude determine the critical value of start and stop well pressure, are opened between implementation.
In the present embodiment, it is described implement " Time Method " between the autocontrol method that drives a well be specifically：Operating personnel are upper
After the machine input start and stop well time command of position, after PLC collects the instruction, return to host computer and carry out time synchronized, it is same when the time
After step, PLC carry out operational analysis, execute instruction, and by the instruction feedback to oil pumper carry out automatic start-stop, opened between realization oneself
Dynamic control.The autocontrol method for implementing to drive a well between " critical value method " has：Operating personnel input start and stop well pressure in host computer
After force value, after PLC reads the pressure value of instruction regulation start and stop well, action planning is carried out, by the instruction feedback to oil pumper
Automatic start-stop is carried out, that is opened between realization automatically controls.
This method specifically comprises the following steps：
Step 1, the ancient 4-120 wells in Changzhi coal bed gas branch company producing well open experiment between carrying out automatically；
Step 2, the automatic control program opened between being write to PLC in the well Automated condtrol cabinet；
Step 3, the upper computer software interface opened between establishment is automatic；
Step 4, enter automatically controlling of in the ranks opening according to classification is opened between corresponding；
Step 5, scene carry out power failure experiment, check whether host computer according to technical scheme performs alarm prompt and urgent
Safeguard measure；
Step 6, scene carry out pressure gauge transmission abnormality experiment, check whether host computer according to technical scheme performs the " time
The autocontrol method switching opened between method ", and make alarm prompt.
Wherein, an automatic control program principle opened, as shown in Figure 1：Opened between coal bed gas well is according to coal bed gas well shaft bottom
Buckling law is flowed, based on " Time Method " and " critical value method " two kinds of control methods, oil pumper is calculated by geological personnel
Start-stop time or the critical value of oil pumper start and stop pressure, after PLC reads the instruction of host computer setting, action planning is carried out,
And feed back to oil pumper, make its good timing node or pressure threshold automatic start-stop according to the rules, so as to open between realizing from
Dynamic control.
Stream pushes back a liter problem to the present invention caused by power failure in open procedure between solution；Because pressure gauge extremely caused by flowing bottomhole pressure (FBHP)
Unusual fluctuations problem, propose following solution method：
1. power cut problem
When host computer it is continuous half when collection PLC pass major parameter for example jig frequency, frequency, electric current be " 0 " when, judge the well
For power down mode.Now host computer can make alarm prompt, remind operating personnel to resubmit work order.When sending a telegram here again,
PLC will enter automatically controlling of in the ranks opening according to new work order.
2. flowing bottomhole pressure (FBHP) unusual fluctuations problem
For the well of tripping in pressure bomb, collection PLC, which is spreaded, when host computer continuous two is small or more presses the numerical value to be
When " 0 ", the autocontrol method opened between " Time Method " is automatically switched to, and reminds operating personnel to carry out time limit in host computer
It is fixed；When pressure gauge, which gathers numeral appearance fluctuation, exceeds normal range (NR), oil pumper original state is temporarily kept, and remind operating personnel
Pressure gauge is checked, while the start-stop time is set.
The present invention is by opening technical know-how research coal bed gas well, and manufacturing parameter is divided in open procedure between coal bed gas well
Analysis, the automatic control program principle opened between proposition, establishes the autocontrol method opened between a set of coal bed gas well, and opened between being directed to
During the power cut problem that occurs, flowing bottomhole pressure (FBHP) unusual fluctuations problem proposes resolving ideas, ensure that coal bed gas well is being opened
Even running in automatic control process.
The major significance of the present invention is that opens between coal bed gas well automatically controls, and solves power failure in an open procedure, well
The problems such as unusual fluctuations, is pressed in underflow.Working strength is reduced, improves operating efficiency, that is opened between coal bed gas well automatically controls
Provide new approaches.
Case study on implementation
Between Changzhi coal bed gas branch company ancient city production capacity well Gu 4-120 wells in open procedure, use what is opened between the present invention
The method automatically controlled：
First, PLC in the well Automated condtrol cabinet is programmed, automatic control function is opened between making it have.Secondly, judge
It is " Time Method " that classification is opened between the well.Then, performed according to corresponding autocontrol method.In ready-made upper computer software
Input service instructs, and enters automatically controlling of in the ranks opening.Finally, carry out scene had a power failure, pressure transmission exception the problems such as test,
And one-week observation is carried out, assess the feasibility of this method.So far, the automatic control effect that the well is opened between implementing is good
Good, interval is dripped in well opening time, daily output tolerance 1200m3.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, it can also make a variety of changes and modification, thus it is all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (4)
1. the autocontrol method opened between a kind of coal bed gas well, it is characterised in that the control method is using between implementation " Time Method "
The autocontrol method two ways to be driven a well between the autocontrol method to drive a well and implementation " critical value method ", which is entered, in the ranks to be opened, wherein,
The autocontrol method for implementing to drive a well between " Time Method " is the ETAD expected time of arrival and departure between being determined by calculating analysis using controlling stream pressure as core；
It is the well for tripping in pressure bomb to implement the autocontrol method that drives a well between " critical value method ", declined according to flowing bottomhole pressure (FBHP) or
Rise amplitude determines the critical value of start and stop well pressure, is opened between implementation.
2. the autocontrol method opened between a kind of coal bed gas well according to claim 1, it is characterised in that the implementation
The autocontrol method to be driven a well between " Time Method " is specifically：After host computer inputs start and stop well time command, PLC is adopted operating personnel
After collecting the instruction, return to host computer and carry out time synchronized, after time synchronized, PLC progress operational analyses, execute instruction,
And the instruction feedback to oil pumper is subjected to automatic start-stop, that is opened between realization automatically controls.
3. the autocontrol method opened between a kind of coal bed gas well according to claim 2, it is characterised in that the implementation
The autocontrol method to be driven a well between " critical value method " is specifically：Operating personnel work as PLC after host computer inputs start and stop well pressure value
After the pressure value for reading instruction regulation start and stop well, action planning is carried out, the instruction feedback to oil pumper is subjected to automatic start-stop,
That is opened between realization automatically controls.
4. the autocontrol method opened between a kind of coal bed gas well according to claim 1-3 any one, it is characterised in that
The autocontrol method specifically comprises the following steps：
Step 1, the well in coal bed gas company producing well open experiment between carrying out automatically；
Step 2, the automatic control program opened between being write to PLC in the well Automated condtrol cabinet；
Step 3, the upper computer software interface opened between establishment is automatic；
Step 4, enter automatically controlling of in the ranks opening according to classification is opened between corresponding；
Step 5, scene carry out power failure experiment, check whether host computer performs alarm prompt according to technical scheme and promptly protect
Measure；
Step 6, scene carry out pressure gauge transmission abnormality experiment, check whether host computer performs " Time Method " according to technical scheme
Between the autocontrol method switching opened, and make alarm prompt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154841.7A CN105804701B (en) | 2016-03-18 | 2016-03-18 | A kind of autocontrol method opened between coal bed gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154841.7A CN105804701B (en) | 2016-03-18 | 2016-03-18 | A kind of autocontrol method opened between coal bed gas well |
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| Publication Number | Publication Date |
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| CN105804701A CN105804701A (en) | 2016-07-27 |
| CN105804701B true CN105804701B (en) | 2018-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610154841.7A Active CN105804701B (en) | 2016-03-18 | 2016-03-18 | A kind of autocontrol method opened between coal bed gas well |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209303A (en) * | 2017-06-29 | 2019-01-15 | 中国石油天然气股份有限公司 | A kind of mining control method of coal bed gas well |
| CN107339083B (en) * | 2017-07-28 | 2019-08-02 | 中国石油天然气股份有限公司 | A kind of flowing bottomhole pressure (FBHP) control method of coal bed gas well |
Citations (4)
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| CN2476641Y (en) * | 2001-04-10 | 2002-02-13 | 石油大学(北京) | Automatic control device for beam-pumping unit |
| CN201236680Y (en) * | 2008-07-29 | 2009-05-13 | 北京康达永宜科技有限公司 | Automatic intermittent oil pumping control device |
| CN102122161A (en) * | 2010-12-31 | 2011-07-13 | 中国石油天然气股份有限公司 | System and method for controlling interval pumping of oil well |
| CN105239967A (en) * | 2015-10-20 | 2016-01-13 | 中国石油天然气股份有限公司 | Automatic control method of plunger gas-lift liquid drainage production of oil-gas well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4739855B2 (en) * | 2005-08-10 | 2011-08-03 | 関西電力株式会社 | Carbon dioxide gas penetration monitoring method |
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2016
- 2016-03-18 CN CN201610154841.7A patent/CN105804701B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476641Y (en) * | 2001-04-10 | 2002-02-13 | 石油大学(北京) | Automatic control device for beam-pumping unit |
| CN201236680Y (en) * | 2008-07-29 | 2009-05-13 | 北京康达永宜科技有限公司 | Automatic intermittent oil pumping control device |
| CN102122161A (en) * | 2010-12-31 | 2011-07-13 | 中国石油天然气股份有限公司 | System and method for controlling interval pumping of oil well |
| CN105239967A (en) * | 2015-10-20 | 2016-01-13 | 中国石油天然气股份有限公司 | Automatic control method of plunger gas-lift liquid drainage production of oil-gas well |
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| CN105804701A (en) | 2016-07-27 |
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