CN103541676A - Automatic control device of mud returning pipeline used for well drilling - Google Patents
Automatic control device of mud returning pipeline used for well drilling Download PDFInfo
- Publication number
- CN103541676A CN103541676A CN201210235760.1A CN201210235760A CN103541676A CN 103541676 A CN103541676 A CN 103541676A CN 201210235760 A CN201210235760 A CN 201210235760A CN 103541676 A CN103541676 A CN 103541676A
- Authority
- CN
- China
- Prior art keywords
- mud
- vibrosieve
- automatic control
- well drilling
- control device
- 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.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to an automatic control device of a mud returning pipeline used for well drilling. The automatic control device of the mud returning pipeline used for well drilling comprises an open-loop control system, wherein the open-loop control system comprises a PLC, the front portion of the PLC is connected with a flow meter, a contactor is connected to the lower portion of the flow meter and is connected with an electromagnetic valve, and automatic control of the mud returning pipeline is achieved by opening and closing the electromagnetic valve. The automatic control device of the mud returning pipeline used for well drilling can be well applied to well drilling. When returned mud is reduced due to the fact that excessive solid components are contained in the returned mud and a vibration sieve is blocked, a bypass-valve is opened automatically in time to avoid waste of the mud.
Description
Technical field
The invention belongs to Oil-Gas Well Engineering field, be specifically related to a kind of drilling mud return pipeline automaton.
Background technology
Due to drilling well self structure feature, in drilling process, usually occur that annular space well shakes out seriously, or occur the complex accident such as well slough.Along with the returning out of mud, material solid-state in the composition of mud accounts for main body like this.If solid-state composition is too many, particle is large again, can cause when slurry flows is through vibrosieve time, and the wire screen of the direct blocking vibration sieve of solid state component wherein, and then cause mud to have little time to carry out Separation of Solid and Liquid and directly arrive sewage reservoir.Especially in the not high stratum of geology cementing strength, if the baddish words of mud property of using make this situation bad especially.If can automatically open in time the valve of bypass valve, allow mud by vibrosieve, directly not arrive grit chamber, can reach the object that guarantees that mud is not wasted.In drilling well, in order to control in time the loss of mud amount, mainly contain at present following several processing mode:
One, reduce mud displacement
In a lot of situations, once there be special personnel to tell the wire screen of drilling engineer's vibrosieve to be plugged, drilling engineer just orders driller to reduce mud displacement at once, and drill bit is lifted to shaft bottom drilling process is stopped.Although do like this, can play the effect slowing down to the further obstruction of wire screen, there is the defect of following three aspects: in it: 1 reduces mud displacement suddenly, causes mud upward velocity in bore hole annulus to reduce, and has strengthened the risk of drilling tool " sand setting " bit freezing.2 continue to creep into owing to stopping, and programming can be slack-off, and drilling period can increase a lot.Although 3 can alleviate the further accumulation of solid matter on vibrosieve wire screen to a certain extent, in fact fundamentally do not solve vibrosieve wire screen and continue the trend of stopping up.
Two, the solid matter on the artificial vibrosieve of cleaning fast
Drilling crew, in work progress, can send special messenger to keep an eye in real time vibrosieve greatly now, after special messenger finds that vibrosieve wire screen is blocked, will clear up fast the solid matter on vibrosieve with special tool.This is also a kind of effective method, but need to clean out at short notice, can cause the scene being in a hurry, and if solid matter glow a lot, labor cleaning goes down always.
Three, manually open bypass valve
Be most widely used at present at the scene with a kind of effective method and be, after finding that vibrosieve is blocked, just directly open the bypass valve before vibrosieve, make the mud returning out from well head flow directly to sand trap without vibrosieve, and then arrange special personnel to go to clear up the solid matter on vibrosieve wire screen, wait after cleaning out and close again bypass valve.But the defect of its existence is: must must have special personnel to keep an eye at vibrosieve place, once after finding that wire screen is blocked, just manually remove to open bypass valve, labor intensive, does not realize the automation of controlling like this.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of drilling mud return pipeline automaton.After finding that vibrosieve is blocked, just automatically open the bypass valve before vibrosieve, make the mud returning out from well head flow directly to grit chamber without vibrosieve, and then arrange special messenger to remove to clear up the solid matter on vibrosieve wire screen, Deng automatically closing bypass valve after a period of time, if wire screen detected, clear up to such an extent that totally just again automatically do not open again bypass valve, until the solid of piling up on vibrosieve is all cleaned rear mud return pipeline, recover normal circulation.Reach the object that reduces mud waste.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Drilling mud return pipeline automaton, it is characterized in that: it comprises open-loop control system, described open-loop control system comprises PLC controller, described PLC controller front portion is connected with flow meter, described PLC controller below connects contactor, described contactor is connected with electromagnetic valve, utilizes the opening and closing of electromagnetic valve is realized mud return pipeline is controlled automatically.
Press such scheme, the Timing that described PLC controller can be to bypass valve opening; Also can arrange the initial value of flow, in real process, arrange as the case may be.
Design principle of the present invention:
In drilling process, in mud ditch below vibrosieve, settle a flow meter, and when normal circulation, record an initial value and be input to PLC controller the inside, when the wire screen of vibrosieve is blocked, described flow meter can detect flow value and reduce, when the mud amount of returning little after certain value, PLC controller is commanded the action of actuator (valve) by contactor, automatically open the bypass valve before vibrosieve, and the time T of bypass valve in open mode can be set by PLC controller, make the mud returning out from well head flow directly to without vibrosieve the natural subsidence that grit chamber carries out solid matter, and then arrange special messenger to remove to clear up the solid matter on vibrosieve wire screen, Deng T during this period of time later bypass valve automatically close, attempt recovering normal circulation.If wire screen cleaning is clean not, just again automatically open bypass valve, until the solid of piling up on vibrosieve is all cleaned rear mud return pipeline, recover normal circulation.Can reach like this object that reduces mud waste.
The setting of described flow initial value, even if consider that the too low meeting of initial value causes the blocked problem that also cannot detect in time of vibrosieve on the one hand; On the other hand in order to prevent because permeability loss or artificially need to reduce discharge capacity and cause arbitrarily opening of bypass valve, initial value can not be too high, so should determine different flow initial values according to different well sections.
The control of described bypass valve opening time, considers on the one hand if wire screen stops up seriously, very difficult at short notice that the solid matter complete liquidation on wire screen is clean, need to be the long a little point of set of time; If the time that bypass valve is opened is on the other hand oversize, vibrosieve has recovered normally also not play a role already.Should determine the time according to different well sections, suggestion adopts 20 minutes.
When this drilling mud return pipeline automaton uses in slip drilling process: (1) is first arranged to flow meter in that mud ditch of vibrosieve below, change the switch valve of bypass valve into described electromagnetic valve, itself and contactor and PLC controller are coupled together; (2) according to different well sections stratum special nature, by PLC controller, bypass valve opening time is set, and flow initial value is set, can realize automatically mud channel is carried out to continuous control, reach the object that reduces mud waste.
Beneficial effect of the present invention:
A kind of drilling mud return pipeline automaton provided by the invention is controlled sensitive, convenient control and regulation, can be applied in preferably in drilling well, when the mud flow rate that the too many blocking vibration of solid state component sieve causes returning in the mud owing to returning reduces, automatically open in time the valve of bypass valve, allow mud not flow through vibrosieve and flow directly to grit chamber natural subsidence, Deng automatically closing bypass valve after a period of time, if being solved, vibrosieve wire screen blockage problem just again automatically do not open bypass valve, until mud return pipeline recovers normal circulation, can reach like this object that guarantees that mud is not wasted.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of drilling mud return pipeline automaton of the embodiment of the present invention 1.In figure: 1 flow meter, 2PLC controller frequency converter, 3 contactors, 4 electromagnetic valves.
The specific embodiment
Embodiment 1
A kind of drilling mud return pipeline automaton, it is characterized in that: it comprises open-loop control system, described open-loop control system comprises PLC controller, described PLC controller front portion is connected with flow meter, described PLC controller below connects contactor, described contactor is connected with electromagnetic valve, utilizes the opening and closing realization of electromagnetic valve automatically to control mud return pipeline.This drilling mud return pipeline automaton can be applied in drilling well preferably, when the mud flow rate that the too many blocking vibration of solid state component sieve causes returning out when the mud owing to returning from well head reduces, automatically open in time the valve of bypass valve, reach the object that guarantees that mud is not wasted.
Claims (3)
1. drilling mud return pipeline automaton, it is characterized in that: it comprises open-loop control system, described open-loop control system comprises PLC controller (2), described PLC controller (2) front portion is connected with flow meter (1), described PLC controller (2) below is connected with contactor (3), described contactor (3) is connected with electromagnetic valve (4), utilizes the opening and closing of electromagnetic valve (4) is realized mud return pipeline is controlled automatically.
2. drilling mud return pipeline automaton according to claim 1, is characterized in that: described PLC controller regulated the time of electromagnetic valve opening, in real process, arranges as the case may be.
3. drilling mud return pipeline automaton according to claim 1, is characterized in that: the initial value to flow arranges, and in real process, arranges as the case may be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235760.1A CN103541676A (en) | 2012-07-10 | 2012-07-10 | Automatic control device of mud returning pipeline used for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235760.1A CN103541676A (en) | 2012-07-10 | 2012-07-10 | Automatic control device of mud returning pipeline used for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103541676A true CN103541676A (en) | 2014-01-29 |
Family
ID=49965489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210235760.1A Pending CN103541676A (en) | 2012-07-10 | 2012-07-10 | Automatic control device of mud returning pipeline used for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103541676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927358A (en) * | 2020-08-06 | 2020-11-13 | 廊坊市金来源环保科技有限公司 | Automatic back-flushing mechanism for mud purifying device |
| CN112682006A (en) * | 2020-12-30 | 2021-04-20 | 陆国平 | Intelligent mud anti-splash valve for petroleum drilling |
-
2012
- 2012-07-10 CN CN201210235760.1A patent/CN103541676A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927358A (en) * | 2020-08-06 | 2020-11-13 | 廊坊市金来源环保科技有限公司 | Automatic back-flushing mechanism for mud purifying device |
| CN112682006A (en) * | 2020-12-30 | 2021-04-20 | 陆国平 | Intelligent mud anti-splash valve for petroleum drilling |
| CN112682006B (en) * | 2020-12-30 | 2022-07-08 | 牡丹江鑫北方石油钻具有限责任公司 | Intelligent mud anti-splash valve for petroleum drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104863610B (en) | A kind of muddy water circulatory system and control method that can directly or indirectly control | |
| CN204691778U (en) | A kind of muddy water circulatory system that can directly and indirectly control | |
| CN104405362B (en) | Automatic bottom hole pressure control device for under-balanced drilling and using method of device | |
| CN103816714B (en) | The economic recharge system of sandstone geothermal tail water | |
| CN101718190B (en) | Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe | |
| KR102570446B1 (en) | Water treatment apparatus | |
| CN111226020B (en) | Method and apparatus for an intelligent electromagnetic screen system for drilling operations | |
| CN103541676A (en) | Automatic control device of mud returning pipeline used for well drilling | |
| CN102425401B (en) | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine | |
| CN202850930U (en) | Overflow automatic control device for drilling | |
| CN105887755B (en) | A kind of reservoir takes out husky system | |
| CN202767920U (en) | Mud return pipeline automatic control device for well drilling | |
| CN102500146A (en) | Filtering layer back washing method for percolating water abstraction and control system | |
| CN203145870U (en) | Energy-saving solid control system | |
| CN103790196B (en) | A kind of Hydraulic Excavator's Boom potential energy recovery control device | |
| CN205025846U (en) | Backpressure valves and have underground scraper work systems of this backpressure valves | |
| CN204456414U (en) | From the flushing system of falling rainbow | |
| CN203736974U (en) | Economic sandstone geothermal tail water recharging system | |
| CN205840828U (en) | Drilling well bypass valve | |
| CN109879465A (en) | A kind of loose sand heat storage underground heat recovery well underground Filtration-Precipitation device | |
| CN105298443A (en) | Oil pipe float valve and blowout prevention, gas lift and fracture combined operation method for underbalance well completion oil pipe descending | |
| CN206571481U (en) | A kind of gas well mouth cyclone desanding device | |
| CN106498936B (en) | A kind of cast-in-situ bored pile mud desanding system | |
| CN202031547U (en) | Wellhead hydraulic signal generating device | |
| CN204782884U (en) | Coal seam gas well drags for buggy device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |