CN202850930U - Overflow automatic control device for drilling - Google Patents
Overflow automatic control device for drilling Download PDFInfo
- Publication number
- CN202850930U CN202850930U CN 201220548862 CN201220548862U CN202850930U CN 202850930 U CN202850930 U CN 202850930U CN 201220548862 CN201220548862 CN 201220548862 CN 201220548862 U CN201220548862 U CN 201220548862U CN 202850930 U CN202850930 U CN 202850930U
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- overflow
- control device
- preventer
- drilling
- electromagnetism
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Abstract
The utility model relates to an overflow automatic control device for drilling. The control device comprises an open-loop control system which comprises a programmable logic controller (PLC), the front of the PLC is connected with a flow meter, a contactor is connected under the flow meter and connected with an electromagnetic blowout preventer, and automatic control of overflow is achieved through starting and stopping the electromagnetic blowout preventer. The overflow automatic control device can be better applied to drilling, when the overflow occurs, mud returned by a mud ditch at a wellhead increases remarkably, and the electromagnetic blowout preventer at the wellhead is automatically stopped timely to handle the overflow rapidly and prevent introducing more complex underground accidents such as blowout.
Description
Technical field
The utility model belongs to the Oil-Gas Well Engineering field, is specifically related to a kind of drilling well automatic overflow control device.
Background technology
Because drilling well self structure characteristics usually occur boring meeting abnormal formation pressure in drilling process, the complex accident such as gas cut perhaps occur.Like this because strata pressure is higher than the effective pressure that drilling fluid produces in the shaft bottom, the mud displacement that wellhead slurry groove notch returns out can be much larger when normally drilling, and then overflow phenomena occurs.If do not have obvious sign before entering the abnormal pressure layer, strata pressure is high again, can cause overflow out of control, be difficult for by fast detecting out, and the rig personnel can not take countermeasure fast, and then cause the overflow development even more serious.Especially in the stratum of high gassiness, if gas is invaded suddenly mud, so that this situation is bad especially, probably cause the major accidents such as blowout, cause great economically loss.If can in time detect the overflow of mud, allow the preventer quick closedown, can reach and guarantee that the down-hole complex accident can not worsen and prevent the purpose of blowout.In order in time to find overflow phenomena and quick closing well, mainly contain at present following several processing mode in the drilling well:
One, manual detection mud ditch liquid level changes
In a lot of situations, can send the special messenger to keep an eye in real time reciprocating sieve, increase in case there are special personnel to tell mud ditch mud on drilling engineer's vibrosieve limit to return out, the drilling engineer just orders the driller that drill bit is lifted from the shaft bottom at once and drilling process is stopped, prepare to implement to close well operations.Can detect in real time overflow although do like this, there is the defective of following three aspects: in it: 1 can detect the serious situation of overflow, is difficult to detect at overflow initial stage or slight overflow.2 can not in time make a response to the flooded conditions that detects.Occur although 3 can detect overflow to a certain extent, need by manually detecting, if personnel are owing to neglect or other reasons is easy to find overflow phenomena.
Two, manual detection slurry tank volumetric change
A big chunk drilling crew is in work progress now, the circulating mud tank that can send the special messenger to keep an eye in real time using, when the special messenger finds that the mud volume compared with normal of slurry tank significantly increases when creeping into, will notify the drilling engineer, the drilling engineer will judge whether to occur overflow according to other parameters.This also is a kind of effectively method, but needs overflow to occur clearly, and perhaps overflow occurs just can be found after the long period, and if just in time break tour or special messenger are difficult in time find overflow phenomena not in the post.
Three, manually close preventer
Be most widely used at present at the scene with effective a kind of method and be, after finding and being confirmed to be the overflow generation, with regard to directly closing well operations, close immediately preventer,, brings out in the mud that returns out from well head the more pernicious accidents such as blowout so that being unlikely to gush out too many.But the defective of its existence is: must must have special personnel to carry out the pass well operations, need to manually remove to close preventer, labor intensive wastes time like this, and does not realize the automation of control.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of drilling well automatic overflow control device.This device is after finding that overflow occurs, be positioned at the electromagnetism preventer of well head with regard to autoshutdown, so that need not manually-operated, the pass well operations just can carry out fast, and then arrange the special messenger to go structure observation specific well conditions and then preparation kill job, automatically open the electromagnetism preventer after a period of time, still exist and just again close the electromagnetism preventer again if detect overflow, until flooded conditions is just recovered normal circulation after eliminating fully.Reach the purpose that reduces the blowout risk.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
The drilling well automatic overflow control device, it is characterized in that: it comprises open-loop control system, described open-loop control system comprises the PLC controller, described PLC controller front portion is connected with flow meter, described PLC controller below connects contactor, described contactor is connected with the electromagnetism preventer, utilizes the opening and closing of electromagnetism preventer to realize that overflow is controlled automatically to mud.
Press such scheme, described PLC controller can be regulated the time of electromagnetism preventer closed condition; Also can the initial value of flow be arranged, in real process, arrange as the case may be.
Design principle of the present utility model:
In drilling process, return out the groove notch at wellhead slurry and settle a flow meter, and initial value of record is input to PLC controller the inside when normal circulation, when having flooded conditions to occur, described flow meter can detect flow value to be increased, after mud returns output and reaches initial value, the PLC controller is commanded the action of actuator (valve) by contactor, autoshutdown is positioned at the electromagnetism preventer of well head, and being in the time T of closed condition, the electromagnetism preventer can be set by the PLC controller, so that whole closing well operation process need not manual intervention, and then arrange the special messenger to go to observe hole condition and preparation kill job, Deng T during this period of time later the electromagnetism preventer automatically open, attempt recovering normal circulation.If just still there is again autoshutdown electromagnetism preventer in overflow, until eliminating rear mud fully, overflow just recovers normal circulation.Can reach like this and reduce the purpose that the blowout risk occurs.
The setting of described flow initial value causes changing a little the problem that discharge capacity also can the autoshutdown preventer even consider on the one hand the too low meeting of initial value; In order to prevent that the electromagnetism preventer can not cut out yet in the very serious situation of overflow generation, initial value can not be too high, so should determine different flow initial values according to different well sections on the other hand.
The control of described bypass valve opening time is considered on the one hand if flooded conditions is serious, is difficult to grasp hole condition clear at short notice or kill job is ready to, need to be the long a little point of closing set of time; If on the other hand electromagnetism preventer time of closing oversize, kill-job preparation finishes already or overflow has been eliminated and also do not opened the electromagnetism preventer.Should determine the time according to different well sections, suggestion was adopted 10 minutes.
When this drilling well was used in drilling process with automatic overflow control device: that mud that (1) at first is arranged to flow meter vibrosieve next door returned out in the groove, and well head is installed the electromagnetism preventer, and itself and contactor and PLC controller are coupled together; (2) according to different well sections stratum special nature, come the electromagnetism preventer shut-in time is set by the PLC controller, and PLC controller flow initial value set, can realize to overflow carry out automatically, continuous control, reach the purpose that reduces the blowout risk.
The beneficial effects of the utility model:
A kind of drilling well that the utility model provides is sensitive with automatic overflow control device control, convenient control and regulation, can be applied in preferably in the drilling well, when owing to piercing mud flow rate that abnormal pressure layer or bad ground cause returning out and increase, in time the valve of autoshutdown electromagnetism preventer does not flow out well head by mud, and during the drilling engineer can observe hole condition and prepare kill job, Deng automatically opening the electromagnetism preventer after a period of time, if wellhead slurry overflow problem is not just solved again autoshutdown electromagnetism preventer, until the mud overflow just recovers normal circulation after eliminating, can reach like this purpose that guarantees to reduce the blowout risk.
Description of drawings
Fig. 1 is the schematic diagram that automatic overflow control device is used in a kind of drilling well of the utility model embodiment 1.Among the figure: 1 flow meter, 2 PLC controllers, 3 contactors, 4 electromagnetism preventers.
The specific embodiment
Embodiment 1
A kind of drilling well automatic overflow control device, 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 portions are connected with flow meter 1, described PLC controller 2 belows connect contactor 3, described contactor 3 is connected with electromagnetism preventer 4, utilizes the opening and closing realization of electromagnetism preventer 4 to the automatic control of overflow accident.This drilling well can be applied in the drilling well preferably with automatic overflow control device, when owing to piercing mud flow rate that abnormal pressure layer or bad ground cause returning out and increase, in time the valve of autoshutdown electromagnetism preventer 4 reaches the purpose that guarantees to reduce the blowout risk.
Claims (3)
1. drilling well automatic overflow control device, 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 electromagnetism preventer (4), utilizes the opening and closing to electromagnetism preventer (4) to realize the mud return pipeline is controlled automatically.
2. drilling well automatic overflow control device according to claim 1, it is characterized in that: described PLC controller was regulated the time of electromagnetism preventer closed condition, was set to as the case may be 10 minutes in real process.
3. drilling well automatic overflow control device according to claim 1, it is characterized in that: described PLC controller arranges the initial value of flow, arranges as the case may be in real process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548862 CN202850930U (en) | 2012-10-25 | 2012-10-25 | Overflow automatic control device for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548862 CN202850930U (en) | 2012-10-25 | 2012-10-25 | Overflow automatic control device for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850930U true CN202850930U (en) | 2013-04-03 |
Family
ID=47982140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220548862 Expired - Fee Related CN202850930U (en) | 2012-10-25 | 2012-10-25 | Overflow automatic control device for drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850930U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107208468A (en) * | 2014-11-11 | 2017-09-26 | 海德里尔美国配送有限责任公司 | Seabed BOP flow of hydraulic fluid monitoring |
| CN109812710A (en) * | 2019-01-28 | 2019-05-28 | 卞洪丽 | A kind of oil field feed-line supercharging device |
| CN111932745A (en) * | 2020-08-17 | 2020-11-13 | 熊勇 | Blowout preventer assembly control cabinet and opening method |
| US11708738B2 (en) | 2020-08-18 | 2023-07-25 | Schlumberger Technology Corporation | Closing unit system for a blowout preventer |
-
2012
- 2012-10-25 CN CN 201220548862 patent/CN202850930U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107208468A (en) * | 2014-11-11 | 2017-09-26 | 海德里尔美国配送有限责任公司 | Seabed BOP flow of hydraulic fluid monitoring |
| CN107208468B (en) * | 2014-11-11 | 2019-10-01 | 海德里尔美国配送有限责任公司 | The monitoring of seabed BOP flow of hydraulic fluid |
| CN109812710A (en) * | 2019-01-28 | 2019-05-28 | 卞洪丽 | A kind of oil field feed-line supercharging device |
| CN109812710B (en) * | 2019-01-28 | 2020-10-27 | 新昌县陆恒机械有限公司 | Oil field pipeline supercharging device |
| CN111932745A (en) * | 2020-08-17 | 2020-11-13 | 熊勇 | Blowout preventer assembly control cabinet and opening method |
| CN111932745B (en) * | 2020-08-17 | 2021-05-25 | 东营市汇安科工贸有限责任公司 | Blowout preventer assembly control cabinet and opening method |
| US11708738B2 (en) | 2020-08-18 | 2023-07-25 | Schlumberger Technology Corporation | Closing unit system for a blowout preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151025 |