CN206091912U - Pressure control device of continuous cycle well drilling - Google Patents
Pressure control device of continuous cycle well drilling Download PDFInfo
- Publication number
- CN206091912U CN206091912U CN201621089302.1U CN201621089302U CN206091912U CN 206091912 U CN206091912 U CN 206091912U CN 201621089302 U CN201621089302 U CN 201621089302U CN 206091912 U CN206091912 U CN 206091912U
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- CN
- China
- Prior art keywords
- flashboard
- bearing
- load
- drilling
- drilling rod
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- 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.)
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Abstract
The utility model discloses a pressure control device of continuous cycle well drilling, it includes the body, and the body middle part is formed with a through -hole that supplies the drilling rod to pass, still installs four flashboards in the through -hole of body, and every flashboard is formed by the half flashboard concatenation of two structure symmetries respectively, and every half flashboard is respectively through hydraulic cylinder drive, four flashboards are served as reasons respectively and are gone up blind rams, slips flashboard, bearing flashboard and the pipe flashboard that sets gradually down, and wherein blind rams, bearing flashboard and pipe flashboard parallel arrangement, slips flashboard and bearing flashboard are the setting that interlocks of 90 crosses. The utility model discloses can reduce the pressure oscillation that connects, unloads single or thribble well head when stopping and beginning to circulate, the stability that keeps well pressure, but furthest guarantees the wall of a well that has formed does not take place to collapse, has greatly reduced the emergence of drilling failure, greatly reduced the risk that break in lost -circulation, stratum, well kick, differential pressure sticking, drill bit or bottom hole assembly meet the card.
Description
Technical field
This utility model is related to a kind of control system of drillng operation, especially a kind of Stress control of continuous cyclic drilling
Device.
Background technology
In drillng operations such as conventional well, horizontal well, underbalance wells, need to connect in drilling operation course, unload single or thribble
Operation, when stopping cleaner for high-pressure drilling fluid and recirculating cleaner for high-pressure drilling fluid, can produce pressure oscillation in well.Borehole pressure is unstable
It is fixed, it may occur however that lost-circulation, hole collapse, formation fracture, well kick, differential sticking equivalent risk, meanwhile, stop and re-establish
Pressures cycle, extends the drillng operation time, increased drillng operation cost.
The content of the invention
The technical problems to be solved in the utility model is to provide one kind and does not stop pressures cycle and connect, unload single operation, favorably
In the drillng operation time is shortened, the pressure control device of the continuous cyclic drilling of drilling cost is reduced.
In order to solve above-mentioned technical problem, this utility model includes body, and the body middle part is vertically formed through one
For the through hole that drilling rod is passed through, four flashboards are also equipped with the through hole of the body, each described flashboard is respectively by two structures
Half symmetrical flashboard is spliced, and each described half flashboard is driven respectively by a fluid cylinder；
Blind rams, slip flashboard, load-bearing flashboard and pipe that four flashboards respectively set gradually from top to bottom
Flashboard, wherein blind rams, load-bearing flashboard and pipe ram be arranged in parallel, and the slip flashboard is in 90 ° with the load-bearing flashboard
Planche cross is crisscross arranged；
The blind rams closure is formed with for fixing drilling rod connecting at the upper end of body through-holes, the slip flashboard middle part
The holes for clamping of head, the tool joint upper end is connected with drilling rod, and lower end is connected with lower drilling rod, the slip flashboard and body it
Between be formed with space, the slip flashboard and load-bearing flashboard are disposed proximate to and are formed between the two gap, the load-bearing flashboard
Middle part is formed with bearing hole, and the bearing hole top is formed with the drilling rod of the load-bearing inclined-plane for suspension strap taper step of taper
Joint and lower drilling rod, are formed with gap between the bearing hole and tool joint, the pipe ram is blocked in body through-holes
Lower end, the pipe ram middle part is formed with the plugging hole passed through for lower drilling rod, and sealing between the plugging hole and lower drilling rod connects
Connect；
The upper circular tube line and lower pipeloop being connected together, the upper circular tube line and institute are additionally provided with the body
The cavity stated between blind rams and slip flashboard is connected, the lower pipeloop and the load-bearing flashboard and pipe ram it
Between cavity be connected.
Described is formed with vivo chute, and two and half flashboards of the slip flashboard can be moved horizontally along chute.
Be separately installed with the blind rams, slip flashboard and the fluid cylinder of pipe ram one for showing lock for driving
Plate closes the indication mechanism of situation, total for being separately installed with Wedge-type locking on two fluid cylinders for driving the load-bearing flashboard
Into.
The beneficial effects of the utility model are：To ensure drillng operation safety, this utility model is devised and a set of continuously followed
Trepan well pressure control device, provides a cleaner for high-pressure drilling fluid circulation canal, the moment of torsion that clamping drilling rod bears, hangs for drillng operation
The load that tool bears is redrilled, is being connect, unloaded in single operation process, do not stop circulation of drilling fluid, eliminate cleaner for high-pressure drilling fluid in well
Inside restart pressure oscillation when circulating, keep borehole pressure to stablize, reduce well lost-circulation, formation fracture, well kick, pressure
Difference bit freezing, drill bit or BHA meet the risk of card, can effectively prevent the generation of drilling failure.Meanwhile, do not stop pressure
Power circulation connects, unloads single operation, is conducive to shortening the drillng operation time, reduces drilling cost.
Description of the drawings
Fig. 1 is the main structure diagram of the pressure control device of this utility model continuous cyclic drilling；
Fig. 2 is the overlooking the structure diagram of slip flashboard and load-bearing flashboard in this utility model；
Fig. 3 is the operating diagram of slip flashboard and load-bearing flashboard in this utility model；
Fig. 4 is the schematic top plan view of chute in this utility model；
Fig. 5 is the overlooking the structure diagram of load-bearing flashboard in this utility model；
Fig. 6 is the left view cutting structural representation of Fig. 5.
Specific embodiment
This utility model is described in further detail with reference to the accompanying drawings and detailed description：
Referring to Fig. 1 to Fig. 6, the pressure control device of continuous cyclic drilling of the present utility model includes body, the body
Middle part is vertically formed through a through hole passed through for drilling rod, four flashboards is also equipped with the through hole of the body, each institute
State flashboard to be spliced by half flashboard of two symmetrical configurations respectively, and each described half flashboard is driven respectively by a fluid cylinder.
Blind rams 1, slip flashboard 4, load-bearing flashboard 5 and pipe that four flashboards respectively set gradually from top to bottom
Sub- flashboard 8, wherein blind rams 1, load-bearing flashboard 5 and pipe ram 8 be arranged in parallel, the slip flashboard 4 and the load-bearing lock
Plate 5 is crisscross arranged in 90 ° of planche crosses.
The blind rams 1 is blocked in the upper end of body through-holes, and the middle part of the slip flashboard 4 is formed with for fixing drilling rod
The holes for clamping of joint 15, the upper end of the tool joint 15 is connected with drilling rod 14, and lower end is connected with lower drilling rod, the slip flashboard
Space is formed between 4 and body, the slip flashboard 4 and load-bearing flashboard 5 are disposed proximate to and are formed between the two gap, institute
State the middle part of load-bearing flashboard 5 and be formed with bearing hole, the bearing hole top is formed with the load-bearing inclined-plane 301 of taper for suspension strap
The tool joint 15 of taper step and lower drilling rod, are formed with gap, the pipe lock between the bearing hole and tool joint 15
Plate 8 is blocked in the lower end of body through-holes, and the middle part of the pipe ram 8 is formed with the plugging hole passed through for lower drilling rod, the closure
It is tightly connected between hole and lower drilling rod.Moment of torsion when slip flashboard is used to bearing, unloads drilling tool spinner in four flashboards, load-bearing lock
Plate is used to bear the suspended load of drilling tool.Blind rams and pipe ram form the pressure space of a closing after closing.Load-bearing
Flashboard is provided with the load-bearing inclined-plane of taper, the tool joint 15 and lower drilling rod for suspension strap taper step；Or in load-bearing flashboard
Right angle step can be set, for the tool joint 15 for hanging straight step and lower drilling rod.Slip flashboard chamber is provided with flashboard operation
Track, is interlocked with load-bearing flashboard chamber using 90 ° of crosses, and the upper plane of load-bearing flashboard is close to the lower plane of slip flashboard and fits,
There is small gap, it is ensured that in limited height space, the pressure control device of continuous cyclic drilling exists between two planes
While moment of torsion when bearing, unloading drilling tool spinner, the suspending weight load of drilling tool can be born.
The upper circular tube line 16 and lower pipeloop being connected together, the upper circular tube line 16 are additionally provided with the body
It is connected with the cavity between the blind rams 1 and slip flashboard 4, the lower pipeloop and the load-bearing flashboard 5 and pipe
Cavity between sub- flashboard 8 is connected.Upper circular tube line 16 and lower pipeloop connect with the output device of a cleaner for high-pressure drilling fluid
Connect, in order to inject cleaner for high-pressure drilling fluid to body through-holes interior circulation.
Described is formed with vivo chute 201, and two and half flashboards of the slip flashboard 4 can be moved along the level of chute 201
It is dynamic.Chute 201 can guide the moving direction of two and half flashboards of slip flashboard 4, can be also used for carrying slip flashboard 4, with
Avoid the lower surface of slip flashboard 4 and the upper surface of load-bearing flashboard 5.
For one to be separately installed with the fluid cylinder for driving the blind rams 1, slip flashboard 4 and pipe ram 8 for showing
Show that flashboard closes the indication mechanism 17 of situation, the sensor of the keying situation for fluid cylinder is wherein respectively mounted in each fluid cylinder, pass
Sensor uses cooperatively to show whether flashboard closes with corresponding indication mechanism 17, and indication mechanism 17 can be buied commercially,
Its structure will herein be described in detail.For being separately installed with Wedge-type locking assembly on two fluid cylinders for driving the load-bearing flashboard 5
11, the Wedge-type locking Main Function of assembly 11 be in order to ensure load-bearing flashboard 5 close after structure it is more stable firm, Wedge-type
Locking assembly 11 can be buied commercially, and its structure will herein be described in detail.
The rotating blowout preventer in the pressure control device of continuous cyclic drilling of the present utility model and portion mounted thereto is (in figure
Do not embody) and bypass high pressure circulation of drilling fluid pipeline (not embodying in figure) realize continuous cycle operation together.
Unload drilling tool control flow：Hydraulic control system hydraulic oil respectively enters the liquid in the pressure control device of continuous cyclic drilling
Cylinder 6,9,12, promotes piston 7,10,13, closes load-bearing flashboard 5 (simultaneously closing off Wedge-type locking assembly 11), pipe ram 8, card
Block brake plate 4 (two and half flashboards of slip flashboard 4 are along chute 201 to central motion), indication mechanism 17 shows that flashboard closes feelings
Condition.Now pipe ram 8 is closed with the rotating blowout preventer formation one installed in continuous cyclic drilling pressure control device top
Chamber.(positioning is clamped by load-bearing flashboard 5) after tool joint 15 is positioned, well head power slip device (slip flashboard 4)
Drilling rod 14 in clamping, at this moment inject cleaner for high-pressure drilling fluid (due to being formed between slip flashboard 4 and load-bearing flashboard 5 to closed intracavity
Gap, and both are also formed with gap and space and drilling rod or body between, therefore cleaner for high-pressure drilling fluid can be full of whole closed
Chamber), when drilling rod (upper drilling rod 14, tool joint 15 and lower drilling rod) external and internal pressure is equal, using Power Tong shackle and on outwarding winding
Drilling rod 14, slip flashboard 4 bears moment of torsion during spinner, the load-bearing inclined-plane 301 of load-bearing flashboard 5 and the tapered slope of tool joint 15
Clamping, bears the weight load of drilling tool, then top rod 14 is promoted to into the upper end of blind rams 1 with tripping assembly by force,
At this moment high pressure is bored using the bypass (i.e. upper circular tube line 16 and lower pipeloop) of the pressure control device of continuous cyclic drilling
Well liquid circulation flows into the central passage of tool joint 15, while hydraulic control system hydraulic oil enters fluid cylinder 2, promotes piston 3, closes complete
Envelope flashboard 1, by the annular seal space of rotating blowout preventer and pipe ram upper and lower Liang Ge airtight chamber is divided into.Top seal chamber is by rotation
Preventer bypasses pressure release, and drilling rod 14 in proposition this completes the operation for unloading drilling tool.
Connect the control flow of drilling tool：Hydraulic control system hydraulic oil is respectively enterd in the pressure control device of continuous cyclic drilling
Fluid cylinder 2,6,9,12, promotes piston 3,7,10,13 to close blind rams 1, load-bearing flashboard 5 and (simultaneously closes off Wedge-type locking assembly
11), pipe ram 8, slip flashboard 4, indication mechanism 17 shows that flashboard closes situation.The load-bearing inclined-plane 301 of load-bearing flashboard 5 and brill
Drilling tool is hung in the tapered slope clamping of knock-off joint 15, bears the weight load of drilling tool, and two and half flashboards of slip flashboard 4 are along cunning
Groove 201 closes clamping tool joint 15.The upper drilling rod 14 of the pressure control device of steady decentralization continuous cyclic drilling, treats drilling rod
14 when transferring to 1 top of blind rams, to rotating blowout preventer and the top cavity circulation injection cleaner for high-pressure drilling fluid of blind rams 1.When
When upper and lower two cavity pressure of blind rams 1 is equal, blind rams 1, after blind rams 1 is fully opened, running and pulling device by force are opened
Under put the make-up of drilling rod 14, while power set screw drilling rod 14, and link closely；After upper drilling rod 14 is tightened with tool joint 15,
Bypass (the i.e. upper circular tube line 16 and lower pipeloop) release of the pressure control device of continuous cyclic drilling is opened, is opened afterwards
The pipe ram 8 of the pressure control device bottom of continuous cyclic drilling, power set unclamp drilling rod 14, complete the behaviour for connecing drilling tool
Make.
This utility model greatly reduces lost-circulation, formation fracture, well kick, differential sticking equivalent risk during drilling well, section
About connect before column to eliminate the rig downtime of the landwaste of bottomhole assembly.This utility model is safe and reliable, structure is novel,
It is easy to operate, improve working performance.
In sum, content of the present utility model is not limited in the above embodiments, and those skilled in the art can
To propose other embodiments within technological guidance's thought of the present utility model, but these embodiments are included in this practicality newly
Within the scope of type.
Claims (3)
1. a kind of pressure control device of continuous cyclic drilling, it is characterised in that：Including body, the body middle part is vertically run through
Be formed with a through hole passed through for drilling rod, four flashboards be also equipped with the through hole of the body, each described flashboard respectively by
Half flashboard of two symmetrical configurations is spliced, and each described half flashboard is driven respectively by a fluid cylinder；
Blind rams (1) that four flashboards respectively set gradually from top to bottom, slip flashboard (4), load-bearing flashboard (5) and
Pipe ram (8), wherein blind rams (1), load-bearing flashboard (5) and pipe ram (8) be arranged in parallel, the slip flashboard (4)
It is crisscross arranged in 90 ° of planche crosses with the load-bearing flashboard (5)；
Blind rams (1) closure is formed with for fixing drilling rod at the upper end of body through-holes, slip flashboard (4) middle part
The holes for clamping of joint (15), tool joint (15) upper end is connected with drilling rod (14), and lower end is connected with lower drilling rod, the card
Block brake plate (4) is formed with space and body between, and the slip flashboard (4) and load-bearing flashboard (5) are disposed proximate to and between the two
Gap is formed with, load-bearing flashboard (5) middle part is formed with bearing hole, and the bearing hole top is formed with the load-bearing inclined-plane of taper
(301) tool joint (15) for suspension strap taper step and lower drilling rod, between the bearing hole and tool joint (15)
Gap is formed with, pipe ram (8) closure is formed with confession at the lower end of body through-holes, pipe ram (8) middle part
The plugging hole that drilling rod is passed through, is tightly connected between the plugging hole and lower drilling rod；
The upper circular tube line (16) and lower pipeloop being connected together, the upper circular tube line (16) are additionally provided with the body
It is connected with the cavity between the blind rams (1) and slip flashboard (4), the lower pipeloop and the load-bearing flashboard
(5) cavity and between pipe ram (8) is connected.
2. according to the pressure control device of the continuous cyclic drilling described in claim 1, it is characterised in that：Described forms in vivo
Two and half flashboards for having chute (201), the slip flashboard (4) can be moved horizontally along chute (201).
3. according to the pressure control device of the continuous cyclic drilling any one of claim 1 or 2, it is characterised in that：With
One is separately installed with the fluid cylinder for driving the blind rams (1), slip flashboard (4) and pipe ram (8) for showing lock
Plate closes the indication mechanism (17) of situation, for being separately installed with a voussoir on two fluid cylinders for driving the load-bearing flashboard (5)
Formula locking assembly (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089302.1U CN206091912U (en) | 2016-09-28 | 2016-09-28 | Pressure control device of continuous cycle well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089302.1U CN206091912U (en) | 2016-09-28 | 2016-09-28 | Pressure control device of continuous cycle well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206091912U true CN206091912U (en) | 2017-04-12 |
Family
ID=58481183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621089302.1U Expired - Fee Related CN206091912U (en) | 2016-09-28 | 2016-09-28 | Pressure control device of continuous cycle well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206091912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285528A (en) * | 2016-09-28 | 2017-01-04 | 中国石油集团渤海钻探工程有限公司 | The pressure control device of continuous cyclic drilling |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
-
2016
- 2016-09-28 CN CN201621089302.1U patent/CN206091912U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285528A (en) * | 2016-09-28 | 2017-01-04 | 中国石油集团渤海钻探工程有限公司 | The pressure control device of continuous cyclic drilling |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210924 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Bohai Drilling Engineering Co., Ltd., PetroChina Tianjin building, No.83, 2nd Street, Tianjin Economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| 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: 20170412 |