CN103775052B - Drilling tool wellhead safety protection control device - Google Patents
Drilling tool wellhead safety protection control device Download PDFInfo
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- CN103775052B CN103775052B CN201410052854.4A CN201410052854A CN103775052B CN 103775052 B CN103775052 B CN 103775052B CN 201410052854 A CN201410052854 A CN 201410052854A CN 103775052 B CN103775052 B CN 103775052B
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Abstract
The invention relates to a drilling tool wellhead safety protection control device. The device comprises a control system, electromagnetic valves, a pressure sensor, a drilling machine brake cylinder and hanging load meters, wherein the electromagnetic valves are arranged on the gas circuit of the drilling machine brake cylinder, the electromagnetic valves are in the normally-closed state; the electromagnetic valves and the pressure sensor are connected onto the control system, the hanging load meters are used for collecting the lifting load of a drilling tool, and connected onto the pressure sensor. According to the device, after a semi-closed ram preventer is closed, a traveling block can still be moved, and the operation such as drilling tool switching and the like can still be conducted, so that the working time is saved and the working efficiency is improved; meanwhile, the tensile failure of the drilling tool can be prevented during lifting while the drilling tool works, so that the drilling tool can be protected effectively.
Description
Technical field
The invention belongs to oil well control field, more particularly, to a kind of close half seal ram preventer after moreover it is possible to safety
Carry out drilling tool the operation such as to switch and do not break the robot control system(RCS) of drilling tool.
Background technology
In oil well control field, it is both provided with half envelope ram preventer and safety device in well head, gas circuit passes through safety
The control valve of device is disconnected the reset controlling the high low-speed clutch of winch, stops pressure regulator valve air inlet, high low-speed clutch is not
Can hang and close it is impossible to carry hook block, thus reached preventing drilling tool from putting forward the purpose being hung up to half envelope flashboard.
Authorization Notice No. is cn202788794u, and authorized announcement date is the Chinese utility model patent on March 13rd, 2013
Disclose a kind of preventer and rig linkage safety device (as depicted in figs. 1 and 2), including work gas circuit and control gas circuit, work
Make gas circuit to be made up of rig driller station gas source 6, normally opened air feeding apparatus 5, pipeline 7, described rig driller station gas source 6 passes through normally opened
Port i of air feeding apparatus 5, working hole k, pipeline 7 supply in the control system controlling the work of well head rig；Control gas circuit by hydraulic pressure
Control cylinder 1 stroke valve 2 controls normally closed air feeding apparatus 4 pipeline 7 of source of the gas 3 to form, and hydraulic control oil cylinder 1 is relatively fixed with stroke valve 2,
It is characterized in that: the oilhole in described hydraulic control oil cylinder 1 rodless cavity is accessed by pipeline 7 and is connecting ram block oil cylinder no
On the pipeline of rod cavity oilhole；Described control source of the gas 3 is respectively by the pore p of pipeline 7 and stroke valve 2, the source of the gas of normally closed air feeding apparatus 4
Mouth i' is connected；The pore a of described stroke valve 2 is communicated with air d, and pore b passes through the control mouth of pipeline 7 and normally closed air feeding apparatus 4
K' is connected；The working hole g' of described normally closed air feeding apparatus 4 is connected with control mouth k of normally opened air feeding apparatus 5 and communicates.In this case,
All maloperation void in whole of operator, it is to avoid drilling tool is pulled off, derrick is drawn the accident collapsing to occur it is achieved that self-locking
The purpose of safeguard protection.
But at present, seal in the ram preventer time in closing half, stopping operation completely is to waste, in closing well the very big time
Afterwards, carry out drilling tool and the operation such as switch being very important, switch the traveling system work that drilling tool is accomplished by rig, above-mentioned practical new
Type patent is prohibited from traveling system motion, and both are opposition.Some drilling teams in order to not waste the working time, just artificial cancellation
Safety device.There is great potential safety hazard in such processing mode, carry drilling tool, do not send out in time in the case of not driving a well
Existing suspending weight exception is simultaneously processed, it will put off the accident of drilling tool.
In sum, prior art is closed half and is sealed ram preventer, starts the fortune that safety device just prohibits traveling system
Dynamic wait operation it is impossible to carrying out drilling tool and switching, waste the working time, if to bring huge safety hidden for cancellation safety device again
Suffer from.
Content of the invention
In order to overcome above-mentioned existing safety device close half seal ram preventer after the operation such as drilling tool can not be arranged to switch,
Waste the defect of working time, the present invention is directed to drawbacks described above, there is provided drilling tool well head security protection and control device, closing
After half envelope ram preventer, remain to movable tourist bus, carry out drilling tool and switch waiting operation, do not waste the working time, improve work and imitate
Rate, can also prevent drilling tool to be pulled off in lifting while work, be effectively protected drilling tool.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
Drilling tool well head security protection and control device it is characterised in that: include control system, electromagnetic valve, pressure transducer, brill
Machine brake cylinder and suspending weight table, electromagnetic valve is arranged in the gas circuit of borer brake cylinder, and electromagnetic valve is in the normally off state, electromagnetic valve
It is connected in control system, pressure transducer is connected in control system, suspending weight table gathers the increasing productivity of drilling tool, suspending weight table is even
It is connected on pressure transducer.
Pilot operated valve device, the normally off air-control device and normally opened air-control device are additionally provided with the gas circuit of borer brake cylinder, the normally off
Air-control device is connected in the gas circuit between pilot operated valve device and electromagnetic valve, before pilot operated valve device and the normally off air-control device are connected to electromagnetic valve
Gas circuit on, the normally off air-control device have pressure close, no break out, the normally off air-control device is connected in control system, normally opened gas control
Device is connected in the gas circuit after electromagnetic valve, and normally opened air-control device no presses closing, breaks out, and normally opened air-control device is connected to
In control system, control system is connected with phonetic alarm device.
Exhaust apparatus is additionally provided with the gas circuit of borer brake cylinder, exhaust apparatus is located at borer brake cylinder and electromagnetism
Between valve, exhaust apparatus includes push buttonvalve and threeway, and before push buttonvalve is located at threeway, threeway one end is connected with push buttonvalve, and one
End is connected with borer brake cylinder, and the other end is connected with colliding crown block brake cylinder, and push buttonvalve is a three-way valve.
Described electromagnetic valve is two-bit triplet electromagnetic valve.
Described normally opened air-control device is normally opened explosion-proof air control switch, and described the normally off air-control device is opened for the normally off explosion-proof gas control
Close.
Described control system is plc full self energy control system.
Described pressure transducer is explosion-proof fluid sensor.
It is provided with multiple critical increasing productivity, a kind of drilling tool institute of the corresponding specification of each critical increasing productivity in control system
The maximum lift load that can bear.
It can also be multiple that described electromagnetic valve can be one, during using multiple electromagnetic valve, electromagnetic valve is connected in parallel
In the gas circuit of borer brake cylinder.
The principle of the present invention is as follows:
One electromagnetic valve is arranged on the gas circuit of borer brake cylinder, electromagnetic valve is in the normally off state, and electromagnetic valve is connected to
In control system；Gather the increasing productivity signal of drilling tool with suspending weight table, the increasing productivity signal collecting is through pressure transducer
Send control system after changing into the signal of telecommunication to, in control system, be set with critical increasing productivity, control system will receive
Increasing productivity signal is compared with the critical increasing productivity setting, when increasing productivity is more than or equal to critical increasing productivity,
Control electromagnetic valve to open, gas circuit turns on, compressed gas enter borer brake cylinder and colliding crown block brake cylinder, stop rig and
Colliding crown block.
The invention has the advantages that
1st, the present invention arranges an electromagnetic valve in the gas circuit of borer brake cylinder, and electromagnetic valve is in the normally off state, electromagnetism
Valve is connected in control system；Gather the increasing productivity signal of drilling tool with suspending weight table, the increasing productivity signal collecting is through pressure
Force transducer sends control system to after changing into the signal of telecommunication, is set with critical increasing productivity in control system, and control system will
The increasing productivity signal receiving is compared with the critical increasing productivity setting, when increasing productivity is more than or equal to critical lifting
During load, electromagnetic valve is controlled to open, gas circuit turns on, compressed gas enter borer brake cylinder and colliding crown block brake cylinder, stop
Only rig and colliding crown block.Electromagnetic valve in off position when, stop compressed gas from entering brake cylinder, prevent closing half and sealing flashboard
After spray apparatus, compressed gas cannot be introduced into brake cylinder, does not execute brake, now can continue to lift up or decline drilling tool and carry out
Drilling tool such as switches at the operation, when only the increasing productivity in drilling tool exceedes the critical increasing productivity of setting in control system, controls system
System just controls electromagnetic valve to open, and compressed gas could smoothly enter such as borer brake cylinder and colliding crown block brake cylinder, stops boring
Machine and colliding crown block.So close half seal ram preventer after workman can also proceed drilling tool and switch to wait operation, fully sharp
With the working time, improve work efficiency；When carrying out switching the operations such as drilling tool, once the increasing productivity of drilling tool exceedes setting
Critical increasing productivity, will self-actuating brake, drilling tool is immovable, prevents drilling tool to be pulled off, protects drilling tool well；Pass through
The setting of the present invention, also ensures that while improve work efficiency drilling tool is not pulled off, and eliminates to draw drilling tool and break and brings
Potential safety hazard.
2nd, the control system of the present invention is connected with the normally off air-control device, normally opened air-control device and phonetic alarm device, the normally off
Air-control device has pressure to close, and no breaks out, normally opened air-control device no presses closing, breaks out, when carrying that control system receives
Load up is more than or equal to critical increasing productivity, and the normally off air-control device and normally opened air-control device are all closed, and control system controls
Alarm device is reported to the police.The synergy of phonetic alarm device, the normally off air-control device and normally opened air-control device, phonetic alarm device report
Police can point out operator's electromagnetic valve to damage well, need to change electromagnetic valve, also reminded operator's increasing productivity simultaneously
Through exceeding critical increasing productivity it is impossible to continue operation, electromagnetic valve is prevented to break drilling tool, effectively in the case of damaging well again
Ensure that drilling tool will not be pulled off.
3rd, the present invention is additionally provided with exhaust apparatus in the gas circuit of borer brake cylinder, and exhaust apparatus is located at borer brake gas
Between cylinder and electromagnetic valve, exhaust apparatus includes push buttonvalve and threeway, before push buttonvalve is located at threeway, threeway one end and push buttonvalve phase
Connection, one end is connected with brake cylinder, and the other end is connected with colliding crown block, and push buttonvalve is a three-way valve.Exhaust apparatus is
Discharge the device of gases at high pressure in order to need to rerun rig and colliding crown block, without exhaust apparatus, when needing weight
When new unlatching rig and colliding crown block, the effect due to compressed gas cannot start, and the exhaust apparatus knot that the present invention provides
Structure is simply it is easy to operate.
4th, electromagnetic valve of the present invention is two-bit triplet electromagnetic valve, and two refer to close and open two positions, threeway refers to all
There are three blow vents, such electromagnetic valve can accurately control electromagnetic valve to be in which position by the control of control system, control
Whether gas circuit turns on, thus control whether braking, controls sensitive and accurate.
5th, control system of the present invention is plc full self energy control system, and plc full self energy control system is easily controllable programmable,
Multiple critical increasing productivity can be set, be easy to workman's practical operation.
6th, it is provided with multiple critical increasing productivity in control system of the present invention, each critical increasing productivity corresponds to a kind of specification
The maximum lift load that can bear of drilling tool, can achieve the protection of many specifications drilling tool so in same control system, prevent
Drilling tool is pulled off, and operation is simple.
Brief description
Fig. 1 and Fig. 2 is prior art construction schematic diagram；
Fig. 3 is the schematic diagram of the present invention.
In figure reference 1, hydraulic control oil cylinder, 2, stroke valve, 3, control source of the gas, 4, normally closed air feeding apparatus, 5, normally opened continue
Gas device, 6, gas source, 7, pipeline, 8, pilot operated valve device, 9, electromagnetic valve, 10, borer brake cylinder, 11, colliding crown block brake cylinder,
12nd, threeway, 13, push buttonvalve, 14, normally opened air-control device, 15, control system, 16, suspending weight table, 17, pressure transducer, 18, the normally off
Air-control device, 19, gas circuit, 20, phonetic alarm device.
Specific embodiment
Produce timeliness for improving, still can carry out drilling tool in well head in the case of closing well and switch or combine.For this
Situation, the invention provides a kind of drilling tool well head security protection and control device, after closing half envelope ram preventer, remains to activity
Tourist bus, only when the increasing productivity of drilling tool is than or equal to the critical increasing productivity setting, could brake, can not only protect
Drilling tool, and normally can implement shaft mouth operation, improve work efficiency.
This invention has been related to following device:
Pilot operated valve device 8, the normally off air-control device 18, electromagnetic valve 9, control system 15, pressure transducer 17, normally opened air-control device
14th, phonetic alarm device 20, push buttonvalve 13, borer brake cylinder 10, colliding crown block brake cylinder 11, suspending weight table 16 and two three
Lead to 12 and a phonetic alarm device 20.
As shown in figure 3, their connection and position relationship are as follows:
Pilot operated valve device 8, the normally off air-control device 18, electromagnetic valve 9, normally opened is disposed with the gas circuit 19 of borer brake cylinder
Air-control device 14, push buttonvalve 13 and a threeway 12, the air inlet of this threeway 12 is connected with push buttonvalve 13, two other aerofluxus
Mouthful, one is connected with colliding crown block brake cylinder 11, and one is connected with borer brake cylinder 10；Push buttonvalve 13 is one three
Port valve door, two opennings are connected in the gas circuit 19 of borer brake cylinder 10, and another one openning is used for aerofluxuss, only need to click
Push buttonvalve 13, compressed gas just can be discharged from push buttonvalve；Electromagnetic valve 9 is connected in control system 15, normally opened air-control device
14th, the normally off air-control device 18 and pressure transducer 17 are all connected in control system 15, suspending weight table 16 by a threeway 12
Collection drilling tool lifting load, the increasing productivity of collection is represented by fuel injection pressure signal, and increasing productivity and fuel injection pressure signal are in straight
Line relation, the fuel injection pressure signal that pressure transducer 17 receives can represent the increasing productivity of the drilling tool that suspending weight table records；Pressure passes
The fuel injection pressure signal collecting is changed into the signal of telecommunication and sends control system 15 to by sensor 17, and phonetic alarm device 20 is connected to control
In system 15.
The preferably the normally off explosion-proof air control switch of wherein the normally off air-control device 18, the preferably normally opened explosion-proof gas control of normally opened air-control device 14
Switch, the preferably explosion-proof fluid sensor of pressure transducer 17, control system 15 is preferably the full intelligence control system of plc.
The operation principle of the present invention and work process are described below:
After half envelope ram preventer is closed, enter two three from gas circuit through pilot operated valve device from the compressed gas of half envelope flashboard
Three-way electromagnetic valve (is in the normally off state), and the compressed gas in gas circuit are isolated it is impossible to move on herein, now the stopping of drilling tool
The brake cylinder of car cylinder and colliding crown block does not all have compressed gas to enter, and rig and colliding crown block do not brake, and can continue work
Make, now operator just can continue to be engaged in drilling tool after closing half envelope ram preventer and the operation such as switch, and take full advantage of
Working time, compressed gas now are stopped at two-bit triplet electromagnetic valve and the normally off air-control device, due to the normally off gas control dress
Putting is to press off conjunction, no breaks out, and it sends closure signal to plc full intelligence control system, and plc control system can show
Going out is now that half envelope ram preventer is closed, but the state that may continue, the work that operator can be safe in this state
Industry；When the oil pressure coming at suspending weight table is converted into the signal of telecommunication by sensor, enter the full intelligence control system of plc, the full intelligence of plc
Control system the increasing productivity receiving can be compared with the critical increasing productivity setting, if the increasing productivity receiving
Less than critical increasing productivity, the full intelligence control system of plc is not done and is reacted, and no signal exports, and electromagnetic valve is disconnected, and now can enter
Row drilling tool is switched or is combined operation；The increasing productivity of the drilling tool receiving when the full intelligence control system of plc is up to or over plc
The critical increasing productivity that full intelligence control system sets, plc full intelligence control system signal output, two-bit triplet electromagnetic valve connects
Logical, compressed gas enter borer brake cylinder, so that winch height throw-out-of clutch, and so that disc brake is braked, borer brake；Pressure
Contracting gas enters colliding crown block brake cylinder, and colliding crown block brakes；Compressed gas enter normally opened air-control device, due to normally opened gas control
Device no presses closing, breaks out, if now two-bit triplet electromagnetic valve is normally opened, normally opened air-control device disconnects, the normally off gas
Control device is closed, and now the full intelligence control system of plc does not control alarm device to report to the police, if two-bit triplet electromagnetic valve is abnormal,
Normally do not open, normally opened air-control device does not have compressed gas to enter, no pressure, and normally opened air-control device is closed, the normally off gas control dress
Put closing, the full intelligence control system of plc receives normally opened air-control device and closes, after the signal that the normally off air-control device is closed, control
Voice is embraced alarm device and is reported to the police, and points out operator to stop operation, stops rig and colliding crown block, also illustrate that two-bit triplet simultaneously
Electromagnetic valve is not normally opened, and checks two-bit triplet electromagnetic valve, provides accurate repair message for maintainer, when shortening maintenance
Between.After rig and colliding crown block brake, need if necessary to open import, rework and can discharge it is only necessary to press
Gases at high pressure, release braking, resume work.
The setting of critical increasing productivity:
The maximum Hanging weight values that drilling tool can be set in the full intelligence control system of plc are critical increasing productivity, simple to operate,
Convenient.
The fuel injection pressure signal of sensor is taken from suspending weight table, and the size of this oil pressure and suspending weight are in line relation, therefore can root
Demarcated according to the numerical value on suspending weight table, the numerical value on sensor panel table is transferred to consistent with the numerical value of suspending weight table.This
Demarcate and voluntarily can adjust setting by operator completely, simple to operation.
The present invention not only achieves the purpose preventing from breaking drilling tool after half envelope flashboard cuts out, and also achieves half envelope flashboard and closes
After closing, the operation that drilling tool still can be switched or be combined.Substantially increase production timeliness, and controllability is high, decrease safety hidden
Suffer from, simple to operation.
Embodiment 1
In this enforcement, pilot operated valve device 8, the normally off air-control device 18, are disposed with the gas circuit 19 of borer brake cylinder
Individual electromagnetic valve 9, normally opened air-control device 14, push buttonvalve 13 and a threeway 12, the air inlet of this threeway 12 is connected with push buttonvalve 13,
Two other air vent, one is connected with colliding crown block brake cylinder 11, and one is connected with borer brake cylinder 10；Button
Valve 13 is a three-way valve, and two opennings are connected in the gas circuit 19 of borer brake cylinder 10, and another one openning is used for arranging
Gas, only need to push the button valve 13, and compressed gas just can be discharged from push buttonvalve；Electromagnetic valve 9 is connected in control system 15,
Normally opened air-control device 14, the normally off air-control device 18 and pressure transducer 17 are all connected in control system 15, and suspending weight table 16 passes through
One threeway 12 is represented by fuel injection pressure signal gathering drilling tool lifting load, the increasing productivity of collection, increasing productivity with
Fuel injection pressure signal is in linear relation, and the fuel injection pressure signal that pressure transducer 17 receives can represent the lifting of the drilling tool that suspending weight table records
Load；The fuel injection pressure signal collecting is changed into the signal of telecommunication and sends control system 15 to by pressure transducer 17.
The preferably the normally off explosion-proof air control switch of wherein the normally off air-control device 18, the preferably normally opened explosion-proof gas control of normally opened air-control device 14
Switch, the preferably explosion-proof fluid sensor of pressure transducer 17, control system 15 is preferably the full intelligence control system of plc.
Embodiment 2
In the present embodiment, it is with the difference of embodiment 1, electromagnetic valve 9 has two, be connected in borer brake cylinder in parallel
Gas circuit 19 on, when its objective is that electromagnetic valve 9 damages wherein, another electromagnetic valve normal work, do not affect system
Normal work, also allows for workman and changes electromagnetic valve.
Embodiment 3
In the present embodiment, it is with the difference of embodiment 1, electromagnetic valve 9 has three, be connected in borer brake cylinder in parallel
Gas circuit 19 on.
Electromagnetic valve 9 can be multiple it is not limited to one to three, as long as being connected in parallel in the gas circuit 19 of borer brake cylinder
?.
Claims (7)
1. drilling tool well head security protection and control device it is characterised in that: include control system (15), electromagnetic valve (9), pressure sensing
Device (17), borer brake cylinder (10) and suspending weight table (16), electromagnetic valve (9) is arranged on the gas circuit (19) of borer brake cylinder (10)
On, electromagnetic valve (9) is in the normally off state, and electromagnetic valve (9) is connected in control system, and pressure transducer (17) is connected to control system
On system (15), suspending weight table (16) gathers the increasing productivity of drilling tool, and suspending weight table (16) is connected on pressure transducer (17).
2. drilling tool well head security protection and control device according to claim 1 it is characterised in that: in borer brake cylinder
(10) pilot operated valve device (8), the normally off air-control device (18) and normally opened air-control device (14), the normally off gas control are additionally provided with gas circuit (19)
Device (18) is connected in the gas circuit (19) between pilot operated valve device (8) and electromagnetic valve (9), pilot operated valve device (8) and the normally off air-control device
(18) it is connected in the gas circuit (19) before electromagnetic valve (9), the normally off air-control device (18) has pressure to close, and no breaks out, the normally off gas
Control device (18) is connected in control system (15), and normally opened air-control device (14) is connected to the gas circuit (19) after electromagnetic valve (9)
On, normally opened air-control device (14) no presses closing, breaks out, and normally opened air-control device (14) is connected in control system (15), control
System (15) processed is connected with phonetic alarm device (20).
3. drilling tool well head security protection and control device according to claim 1 and 2 it is characterised in that: in borer brake gas
Be additionally provided with exhaust apparatus in the gas circuit (19) of cylinder (10), exhaust apparatus be located at borer brake cylinder (10) and electromagnetic valve (9) it
Between, exhaust apparatus includes push buttonvalve (13) and threeway (12), push buttonvalve (13) be located at threeway (12) before, threeway (12) one end with
Push buttonvalve (13) is connected, and one end is connected with borer brake cylinder (10), and the other end is connected with colliding crown block brake cylinder (11),
Push buttonvalve (13) is a three-way valve.
4. drilling tool well head security protection and control device according to claim 1 and 2 it is characterised in that: described electromagnetic valve (9)
For two-bit triplet electromagnetic valve.
5. drilling tool well head security protection and control device according to claim 2 it is characterised in that: described normally opened air-control device
(14) it is normally opened explosion-proof air control switch, described the normally off air-control device (18) is the normally off explosion-proof air control switch.
6. drilling tool well head security protection and control device according to claim 1 it is characterised in that: described control system (15)
For plc full self energy control system.
7. drilling tool well head security protection and control device according to claim 1 it is characterised in that: described pressure transducer
(17) it is explosion-proof fluid sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052854.4A CN103775052B (en) | 2014-02-17 | 2014-02-17 | Drilling tool wellhead safety protection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052854.4A CN103775052B (en) | 2014-02-17 | 2014-02-17 | Drilling tool wellhead safety protection control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775052A CN103775052A (en) | 2014-05-07 |
| CN103775052B true CN103775052B (en) | 2017-01-25 |
Family
ID=50567746
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052854.4A Active CN103775052B (en) | 2014-02-17 | 2014-02-17 | Drilling tool wellhead safety protection control device |
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| Country | Link |
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| CN (1) | CN103775052B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952618A (en) * | 2018-08-16 | 2018-12-07 | 濮阳市百福瑞德石油科技有限公司 | A kind of drilling well is anti-to put off device |
| CN112901136A (en) * | 2021-01-29 | 2021-06-04 | 中石化石油工程技术服务有限公司 | Drilling machine brake and comprehensive protection moving system |
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|---|---|---|---|---|
| SU1640349A1 (en) * | 1989-01-12 | 1991-04-07 | Предприятие П/Я Р-6109 | Round trip apparatus for drilling rig |
| CN2364016Y (en) * | 1999-04-08 | 2000-02-16 | 成都菲达实业有限责任公司 | Overhead travelling crane collision computer controller |
| CN1661197A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Anticollision system of roller bridge applicable in well servicing unit in ocean and control method |
| CN201963288U (en) * | 2010-04-30 | 2011-09-07 | 杜爱莲 | Ram preventer/borer brake interlock is prevented carrying, the anti-safety device of hanging |
| CN202788794U (en) * | 2012-09-25 | 2013-03-13 | 盐城佰信石油机械有限公司 | Blowout preventer and drilling machine linkage safety device |
| CN203939494U (en) * | 2014-02-17 | 2014-11-12 | 成都市卓新实业有限公司 | Drilling tool well head security protection and control device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1195921A (en) * | 1983-02-09 | 1985-10-29 | Robert J. Prior | Blow out preventer warning system |
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2014
- 2014-02-17 CN CN201410052854.4A patent/CN103775052B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1640349A1 (en) * | 1989-01-12 | 1991-04-07 | Предприятие П/Я Р-6109 | Round trip apparatus for drilling rig |
| CN2364016Y (en) * | 1999-04-08 | 2000-02-16 | 成都菲达实业有限责任公司 | Overhead travelling crane collision computer controller |
| CN1661197A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Anticollision system of roller bridge applicable in well servicing unit in ocean and control method |
| CN201963288U (en) * | 2010-04-30 | 2011-09-07 | 杜爱莲 | Ram preventer/borer brake interlock is prevented carrying, the anti-safety device of hanging |
| CN202788794U (en) * | 2012-09-25 | 2013-03-13 | 盐城佰信石油机械有限公司 | Blowout preventer and drilling machine linkage safety device |
| CN203939494U (en) * | 2014-02-17 | 2014-11-12 | 成都市卓新实业有限公司 | Drilling tool well head security protection and control device |
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| Publication number | Publication date |
|---|---|
| CN103775052A (en) | 2014-05-07 |
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