CN209195272U - A kind of quick drill plug tubing string - Google Patents
A kind of quick drill plug tubing string Download PDFInfo
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- CN209195272U CN209195272U CN201821713462.8U CN201821713462U CN209195272U CN 209195272 U CN209195272 U CN 209195272U CN 201821713462 U CN201821713462 U CN 201821713462U CN 209195272 U CN209195272 U CN 209195272U
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Abstract
The utility model provides a kind of quick drill plug tubing string, wherein tubing string includes oil pipe, helicoid hydraulic motor, it further include continuous brill plug tool, bushing pipe, the oil pipe and continuous plug tool interval of boring are formed by connecting tubular column string, tubular column string bottom connecting screw drilling tool, bushing pipe upper end screw thread type connect liner hanger, and liner hanger is put into wellhead casing pipe four-way, liner hanger is fixed on the hanger jackscrew of wellhead casing pipe four-way, and the tubular column string is walked from top to bottom in bushing pipe.It is single be drilled after make up a joint without termination of pumping, effectively drilling cuttings is avoided to deposit, improves operating efficiency and operational security.
Description
Technical field
The utility model relates to the workover treatment tubing string of petroleum industry, especially a kind of quick drill plug tubing string.
Background technique
Tradition is bored in plug operation process at present, and the drilling cuttings from shaft bottom is bored in drilling will be mixed into flushing fluid and therewith by shaft bottom
It returns to well head, to ground.After completing the drilling of a tubing length, when continued access is single, first not termination of pumping is needed to continue cycling through longer
Time allows the consistent in density of flushing fluid in pit shaft inside and outside drilling tool so that drilling cuttings all returns out wellbore to well head, ground, thus
Reach internal and external pressure balance, at this time could can termination of pumping, carry out lower oil pipe of continued access operation, then turn on pump continues to creep into.It is no
Then, the liquid between drilling tool and wellbore in annular space will due to drilling cuttings is mixed into and density increase, if at this time immediately stop well-flushing circulation
Or circulation is not thorough, liquid will flow back into drilling tool rapidly under the action of fluid density inside and outside drilling tool is poor in annular space, connect
When single termination of pumping, drilling cuttings precipitating easily causes drilling tool water hole to block, and increases and bores plug difficulty, or even causes to bore the failure of plug midway, do over again.
It is drilled the operation process increased construction time of an oil pipe circulation primary simultaneously, increases cost.In addition, the reflux of flushing fluid adds
The speed that fast drilling cuttings sinks, also easily around drill bit sand setting and cause bit freezing.Enter the drilling cuttings of drilling tool at this time, turn on pump follows again
Helicoid hydraulic motor will be entered with flushing fluid when ring and increase its damage even rotor of stuck helicoid hydraulic motor, make to bore plug failure.Reflux
Flushing fluid may be sprayed onto ground, not only caused the pollution of well head and its ambient enviroment, but increase well head worker operation difficulty and
Labor intensity.If during the cold season under environment, the flushing fluid icing of ejection more brings harm to ground safety work.
Patent 200920222287.7 is related to a kind of tubular column for drilling plugs in well repairing, in helicoid hydraulic motor upper end connection backwashing wells
The case where double seal check valve can prevent flushing fluid from flowing back, but while making up a joint still needs to termination of pumping, and drilling cuttings is deposited on annular space at this time is not
It can effectively avoid, to still exist a possibility that bit freezing.In addition there is still a need for appropriate circulation a few minutes before each termination of pumping, so that boring
It is little to fill in improved efficiency.
Therefore, for current light maintenance bore plug operation the problem of, have studied it is a set of be suitable for current workover treatment, apply
The brill plug process pipe string and its supporting tool of work simple process.
Utility model content
The purpose of the utility model is to provide a kind of quick drill plug tubing string, G.I.H can complete oil gas water well internal bridge
Foulant rotary drilling on plug, cement plug and shaft in wall removes.It is single be drilled after make up a joint without termination of pumping, effectively avoid drilling cuttings heavy
Product improves operating efficiency and operational security.
The purpose of this utility model can be achieved by the following technical measures:
The quick drill plug tubing string includes oil pipe, helicoid hydraulic motor, further includes continuous brill plug tool, bushing pipe, the oil pipe and company
Continuous plug tool interval of boring is formed by connecting tubular column string, tubular column string bottom connecting screw drilling tool, bushing pipe upper end screw thread type connection lining
Pipe hanger, liner hanger are put into wellhead casing pipe four-way, and liner hanger is fixed on the hanger top of wellhead casing pipe four-way
On silk, the tubular column string is walked from top to bottom in bushing pipe.
The purpose of this utility model can be also achieved by the following technical measures:
The continuous brill plug tool includes sequentially connected top connection, outer tube, lower contact from top to bottom, in the top connection
Check valve is installed, installation center pipe in outer tube installs lower check valve inside central tube lower semisection, during the upper check valve is located at
Heart Guan Shangfang, outer tube lower part outer wall are set with sealing ring, and it is empty that sealing ring can seal the continuous annular space bored between plug tool and bushing pipe
Between.
Annular space is formed between the central tube, outer tube, outer tube wall circumference uniform distribution opens up at least three connection runners, described
Central tube upper end blocks, and central tube side wall opens up at least three column recirculation hole battle arrays, and each column recirculation hole battle array at least opens up three circulations
Hole, the recirculation hole battle array with connection runner corresponding connection one by one.
The continuous outer tube external space for boring plug tool is connect with space in central tube by connection runner and recirculation hole, institute
It states outer tube and is up connected to check valve with the annular space of central tube, be connected to lower contact down.
The upper check valve is valve ball, valve seat form, and only upper flow pressure is greater than just openable when fluid beneath pressure
Make liquid communication；The lower check valve is valve ball, valve seat form, and only Fluid pressure is greater than fluid beneath pressure Shi Caike above
Opening makes liquid communication.
Self-sealing rubber core is set inside the well-flushing threeway upper port, and the upper surface of self-sealing rubber core is placed from sealed cover, self-styled pressure
Lid is bolted with well-flushing threeway using flange connection, so that self-sealing rubber core be compressed.
The utility model has the advantages that compared with prior art
1. can realize that continuous bore fills in operation；
2. process pipe string structure is simple and convenient to operate, while shaft mouth operation height is low；
3. though what it is by check valve is always clean flushing fluid, the company of increase continuously boring includes check valve in plug tool
The continuous functional reliability for boring plug tubing string；
4. being not necessarily to termination of pumping when connecting single, operating efficiency is high；
5. no pressure connects single, high safety and reliability；
6. after the completion of process connection, boring plug can be completed brill plug process without any operation bidirectional in the process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram that plug tool is continuously bored in Fig. 1.
In figure: 1-oil pipe；2-from sealed cover；3-self-sealing rubber cores；4-well-flushing threeways；5-single ram type perventers；6—
Wellhead casing pipe four-way；7-liner hangers；8-bushing pipes；9-continuous brill plug tools；9.1-top connections；9.2-upper check valves；
9.3-outer tubes；9.4-central tubes；9.5-recirculation holes；9.6-connection runners；9.7-lower check valves；9.8-lower contacts；
9.9-sealing rings；10-helicoid hydraulic motors；11-casings.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1 to Fig. 2, the utility model provides a kind of technical solution: quick drill plug tubing string, including oil pipe 1, continuous
Plug tool 9, bushing pipe 8 and mating wellhead assembly are bored, it is direct that the continuous brill plug tool 9 is installed on two oil pipes 1.Oil pipe string is most lower
Hold connecting screw drilling tool 10, the helicoid hydraulic motor bottom connection drill bit or junk mill.When helicoid hydraulic motor arrives target depth down fastly,
The continuous lower root oil pipe 1 of reconnection after boring plug tool 9 of well mouth oil pipe connection, subsequent piece oil pipe 1 of every tripping in connect a continuous brill
Plug tool 9, until operation is completed.
The mating wellhead assembly is according to this from top to bottom well-flushing threeway 4, single ram type perventer 5 and wellhead casing pipe four-way 6,
Connected by flange bolt.
Self-sealing rubber core 3 is set inside 4 upper port of well-flushing threeway, and self-sealing rubber core 3 is mainly used for sealing oil pipe, from sealing
The upper surface of core is placed from sealed cover 2, the through-hole for having oil pipe or tool to pass through is designed from sealed cover 2, from sealed cover 2 and well-flushing three
Logical 4 are bolted using flange connection, so that self-sealing rubber core 3 be compressed, are fitted through oil pipe string and are realized outside oil pipe
The sealing of annular space.
It is placed with liner hanger 7 in the wellhead casing pipe four-way 6, by the hanger jackscrew of four-way junction of casing 6 by bushing pipe
Hanger 7 is fixed.The liner hanger 7 is lower to hang bushing pipe 8, passes through screwed connection.Liner hanger 7 is equipped with sealing element,
Seal bushing pipe 8 and 11 annular space of casing.
The tubular column string for being equipped with continuous brill plug tool 9 is walked from top to bottom in bushing pipe 8, the length of the bushing pipe 8
Greater than an oil pipe 1 and continuous the sum of the length for boring plug tool 9.
As shown in Fig. 2, the continuous brill plug tool include sequentially connected top connection 9.1 from top to bottom, outer tube 9.3, under
Connector 9.8 installs check valve 9.2 in the top connection, installation center pipe 9.4 in outer tube, installation inside central tube lower semisection
Lower check valve 9.7, the upper check valve are located above central tube, and outer tube lower part outer wall is set with sealing ring 9.9, sealing ring energy
The continuous annulus space bored between plug tool and bushing pipe of sealing.
Annular space is formed between the central tube, outer tube, outer tube wall circumference uniform distribution opens up at least three connection runners 9.6,
The central tube upper end blocks, and central tube side wall opens up at least three column recirculation hole battle arrays, and each column recirculation hole battle array at least opens up three
Recirculation hole 9.5, the recirculation hole battle array with connection runner corresponding connection one by one.
The continuous outer tube external space for boring plug tool is connect with space in central tube by connection runner and recirculation hole, institute
It states outer tube and is up connected to check valve with the annular space of central tube, be connected to lower contact down.9.7 valve ball of lower check valve upper,
Lower end is still in outer tube 9.3, ability openable lower check valve when only central tube fluid pressure is higher.Outer tube and central, tubular at
Annular space and central tube in the connection in space be to be realized by the unlatching of lower check valve, connection with space at top connection
It is to be realized by the unlatching of upper check valve.
It is equipped with sealing ring 9.9 in 9.6 lower part of connection runner of outer tube 9.3, the annular space between salable tool and bushing pipe is empty
Between, so that the annular space below the annular space and sealing ring of 9.9 top of sealing ring is not circulated.
When operation prepares, the nozzle of well-flushing threeway 4 connects flushing fluid feed liquor pipeline, the flank nozzle connection of four-way junction of casing 6
Rotary hose or steel pipeline.When operation, when helicoid hydraulic motor arrives target depth down fastly, well mouth oil pipe 1 connects continuous brill plug tool 9
Lower root oil pipe 1 is reconnected afterwards, and subsequent piece oil pipe 1 of every tripping in connects one and continuously bores plug tool 9, until operation is completed.Bushing pipe 8
Inside there is a continuous brill plug tool 9 always, flushing fluid enters tubing string from well-flushing threeway 4.The sealing of plug tool 9 is continuously bored in bushing pipe
9.9 isolation bushing pipe 8 of circle and the continuous upper annulus boring plug tool 9 and being formed.At this time the flushing fluid in tubing string by upper annulus by
It is connected to runner 9.6, recirculation hole 9.5 enters in central tube 9.4.Since the pressure in central tube 9.4 increases, thus unidirectional under opening
Valve 9.7 makes flushing fluid flow into lower oil pipe 1.And the low pressure of upper check valve 9.2 is greater than upper pressure, remains turned-off shape at this time
State, to guarantee that this continuous bores in 9 top connected pipes of plug tool there is not pressure.After boring a complete oil pipe under plug, well mouth oil pipe
Be again coupled to continuously to bore plug tool and connect lower root oil pipe thereon, continue lower section oil pipe, so new tripping in continuously bore plug tool 9 into
Enter bushing pipe, the working condition described before continuing, and the continuous brill plug tool 9 in bushing pipe deviates from bushing pipe before, deviates from this time
The continuous brill plug tool 9 of bushing pipe 8 is not since sealing ring 9.9 works, and the well-flushing hydraulic coupling of top oil pipe is much larger than central tube
With the annular pressure of outer tube, therefore upper check valve 9.2 is opened, and it is remote with casing annulus pressure with central tube 9.4 to be connected to outer tube
Less than flushing fluid pressure in tubing string, then check valve 9.7 is played to remain off, thus the oil pipe stream from top come flushing fluid
Lower section connected pipes, and flushing fluid are flowed by the annular space between the 9.4 of upper check valve 9.2, outer tube 9.3 and central tube
It can not be thence into central tube 9.4, to guarantee that flushing fluid will not flow out outside tubing string here.And all abjection bushing pipes 8
It is continuous to bore plug tool 9 automatically into this working condition, make flushing fluid by lower section tubular column string until flow into helicoid hydraulic motor and
Drill bit.The drilling cuttings that rotary drilling generates has been rushed the annular space for entering tubing string and casing 11 and being formed by flushing fluid, above returns to well head.
Due to the sealing ring 9.9 on the continuous brill plug tool 9 in bushing pipe 8, guarantee that the flushing fluid of lower section carrying drilling cuttings can not be mixed into top
Enter the flushing fluid of well, and the flushing fluid for carrying drilling cuttings is flowed by the annular space of bushing pipe 8 and casing 11 by the four-way junction of casing 6 of well head
Out.
When the depth for being drilled an oil pipe needs continued access oil pipe, it is not necessarily to termination of pumping, because of 1 no pressure of well mouth oil pipe, in well head
It is directly connected to continuously bore plug tool 9 above oil pipe, then upper end connected pipes, then G.I.H, and so on, it realizes continuous
Bore plug operation.Due to continuously boring, working fluid is always then to guarantee continuous brill plug tool 9 into well flushing fluid always in plug tool 9
It is not easy to be blocked, improves its functional reliability.
In the description of the present invention, it should be understood that temporald eixis or positional relationship are based on the figure
Orientation or positional relationship is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of quick drill plug tubing string, including oil pipe, helicoid hydraulic motor, which is characterized in that further include it is continuous bore plug tool, bushing pipe and
Mating wellhead assembly, the oil pipe and continuous plug tool interval of boring are formed by connecting tubular column string, tubular column string bottom connecting screw drilling tool,
Bushing pipe upper end screw thread type connects liner hanger, and liner hanger is put into wellhead casing pipe four-way, and liner hanger is fixed
On the hanger jackscrew of wellhead casing pipe four-way, the tubular column string is walked from top to bottom in bushing pipe.
2. a kind of quick drill plug tubing string according to claim 1, which is characterized in that the continuous brill plug tool includes from upper
Sequentially connected top connection, outer tube, lower contact under and install check valve in the top connection, installation center pipe in outer tube, in
Lower check valve is installed, the upper check valve is located above central tube, and outer wall suit in the outer tube lower part is close inside heart pipe lower semisection
Seal ring, sealing ring can seal the continuous annulus space bored between plug tool and bushing pipe.
3. a kind of quick drill plug tubing string according to claim 2, which is characterized in that formed between the central tube, outer tube
Annular space, outer tube wall circumference uniform distribution open up at least three connection runners, and the central tube upper end blocks, central tube side wall open up to
Few three column recirculation hole battle arrays, each column recirculation hole battle array at least open up three recirculation holes, the recirculation hole battle array be connected to runner phase one by one
Corresponding connection.
4. a kind of quick drill plug tubing string according to claim 3, which is characterized in that outside the continuous outer tube for boring plug tool
Space is connect with space in central tube by connection runner and recirculation hole, and the outer tube is up connected to single with the annular space of central tube
To valve, it is connected to lower contact down.
5. a kind of quick drill plug tubing string according to claim 3, which is characterized in that the upper check valve is valve ball, valve seat
Form, it is just openable when only upper flow pressure is greater than fluid beneath pressure to make liquid communication；The lower check valve is valve ball, valve
Seat form, it is just openable when only Fluid pressure is greater than fluid beneath pressure above to make liquid communication.
6. a kind of quick drill plug tubing string according to claim 1, which is characterized in that the mating wellhead assembly is from top to bottom
According to this it is well-flushing threeway, single ram type perventer and wellhead casing pipe four-way, is connected by flange bolt.
7. a kind of quick drill plug tubing string according to claim 6, which is characterized in that set inside the well-flushing threeway upper port
Self-sealing rubber core is set, the upper surface of self-sealing rubber core is placed from sealed cover, passed through from sealed cover with well-flushing threeway using flange connection
It is bolted, so that self-sealing rubber core be compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713462.8U CN209195272U (en) | 2018-10-22 | 2018-10-22 | A kind of quick drill plug tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713462.8U CN209195272U (en) | 2018-10-22 | 2018-10-22 | A kind of quick drill plug tubing string |
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| Publication Number | Publication Date |
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| CN209195272U true CN209195272U (en) | 2019-08-02 |
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| CN201821713462.8U Active CN209195272U (en) | 2018-10-22 | 2018-10-22 | A kind of quick drill plug tubing string |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075362A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Fast plug drilling string and method |
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2018
- 2018-10-22 CN CN201821713462.8U patent/CN209195272U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075362A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Fast plug drilling string and method |
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