CN208816047U - A kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well - Google Patents
A kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well Download PDFInfo
- Publication number
- CN208816047U CN208816047U CN201821692380.XU CN201821692380U CN208816047U CN 208816047 U CN208816047 U CN 208816047U CN 201821692380 U CN201821692380 U CN 201821692380U CN 208816047 U CN208816047 U CN 208816047U
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- China
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- barrel chamber
- trunnion
- loopa
- cylinder
- tool
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Abstract
The utility model relates to a kind of negative-pressure ward tools for coiled tubing self-loopa particle stream flow drilling well, this negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well is cylinder, female thread is arranged into top connection in cylinder upper end, female thread is arranged into lower contact in cylinder lower end, cylinder lumen between top connection and lower contact is followed successively by barrel chamber, nozzle segment, trunnion, diffuser, lower barrel chamber, the cylinder lumen of nozzle segment is tapered, form nozzle, nozzle connects trunnion, trunnion is uniformly arranged in the circumferential direction inlet, inlet is skewed, skewed inlet is towards direction of flow, trunnion is therewith using wedge-shaped transition connection between diffuser, the internal diameter for spreading pipe end is equal with upper barrel chamber internal diameter, diffuser connects lower barrel chamber, lower barrel chamber is equal with upper barrel chamber internal diameter, lower barrel chamber connects lower contact.The utility model solves in existing self-loopa particle stream flow that there is particles to draw difficult, the larger problem of pressure loss in tool.
Description
Technical field
The utility model relates to oil drilling broken rock technology fields, and in particular to one kind is used for coiled tubing self-loopa particle
The negative-pressure ward tool of jet stream drilling well.
Background technique
With the failure of Shallow Oil-Gas resource, deep formation becomes important one of exploration and development object, and deep-well and ultra-deep
It is commonly encountered bad ground and bad ground in well drilling process, seriously restricts bit speed, particle stream flow rock fracture in dynamic indentation is as one
The efficient broken rock mode of kind is just at home and abroad furtherd investigate and is applied, and self-loopa particle stream flow drilling well is made using pressure difference
With, establish self-circulation system, landwaste drawn in annular space, enable particle of the landwaste as auxiliary rock, play saving at
This, increases the effect of working efficiency, still, at present self-loopa particle stream flow in there is particles to draw difficult, tool
The larger problem of interior pressure loss.
Summary of the invention
The purpose of the utility model is to provide a kind of negative-pressure ward works for coiled tubing self-loopa particle stream flow drilling well
Tool, this negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well for solve self-loopa particle penetrate
There is particles to draw difficult, the larger problem of pressure loss in tool in stream.
The technical scheme adopted by the utility model to solve the technical problem is as follows: this be used for coiled tubing self-loopa particle
The negative-pressure ward tool of jet stream drilling well is cylinder, and female thread is arranged into top connection in cylinder upper end, and internal screw thread is arranged in cylinder lower end
Lower contact is formed, the cylinder lumen between top connection and lower contact is followed successively by barrel chamber, nozzle segment, trunnion, diffuser, lower cylinder
Chamber, the cylinder lumen of nozzle segment be it is tapered, form nozzle, nozzle connects trunnion, and trunnion is uniformly arranged in the circumferential direction inlet, into
Liquid mouth be it is skewed, skewed inlet, using wedge-shaped transition connection between trunnion and diffuser, expands towards direction of flow
The inner cavity of separate tube is flaring, and the internal diameter for spreading pipe end is equal with upper barrel chamber internal diameter, and diffuser connects lower barrel chamber, lower barrel chamber and
Upper barrel chamber internal diameter is equal, and lower barrel chamber connects lower contact.
Top connection and coiled tubing are threadedly coupled by screw thread conversion head in above scheme, and lower contact and drilling tool thread connect
It connects.
Trunnion is circumferentially arranged there are four inlet in above scheme.
The utility model has the following beneficial effects:
1, the utility model cooperation coiled tubing uses, and can be used for the drilling well of slim-hole Vertical Well and horizontal well, and
In old well reform operation.
2, the utility model inlet uses horse-hof shape, angled skewed of inlet and trunnion middle line, towards incoming flow
Direction, convenient in annular space drilling fluid and landwaste particle be inhaled into.
3, can be increased using wedge-shaped transition than vertical transition in conventional tool between the utility model trunnion and diffuser
Suction pressure reduces the pressure loss in runner, keeps tool inlet capacity stronger.
Detailed description of the invention
Fig. 1 is top view of the invention
Fig. 2 is main view of the invention
Fig. 3 is A-A sectional view in Fig. 2.
1 top connection, 2 nozzles, 3 inlets, 4 trunnions, 5 diffusers, 6 lower contacts, barrel chamber on 7,8 lower barrel chambers.
Specific embodiment
The utility model is described further with reference to the accompanying drawing:
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3, this negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well
It is mounted between coiled tubing end and drilling tool, upper end top connection is connect with coiled tubing end thread, inlet 3 and annular space phase
Even.
This negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well identical, internal diameter ruler for each section of outer diameter
Very little and variform integrated cylinder-like structure, by the variation of cylinder internal diameter by top connection 1, upper barrel chamber 7, nozzle 2, trunnion
4, diffuser 5, lower barrel chamber 8, lower contact 6 be it is integrated, combine in a cylinder.Female thread is arranged into top connection in cylinder upper end
1, female thread is arranged into lower contact 6 in cylinder lower end, and top connection 1 passes through screw thread conversion head and coiled tubing screw thread using internal screw thread
Connection, lower contact 6 are connect by internal screw thread with drilling tool thread.
Cylinder lumen between top connection 1 and lower contact 6 is followed successively by barrel chamber 7, nozzle segment, trunnion 4, diffuser 5, lower cylinder
Chamber 8, the cylinder lumen of nozzle segment be it is tapered, form nozzle 2, nozzle 2 connects trunnion 4, and 2 lower internal diameter of nozzle is compared in trunnion 4
Diameter is small, is connected between the lower mouth of nozzle 2 and trunnion 4 using wedge-shaped transition, is uniformly arranged four inlets 3 on the outer wall of trunnion 4, into
Liquid mouth 3 be it is skewed, inlet 3 uses horse-hof shape, angled skewed of inlet 3 and 4 middle line of trunnion, skewed
Inlet 3 towards direction of flow, using wedge-shaped transition connection between trunnion 4 and diffuser 5, the inner cavity of diffuser 5 is flaring
, the internal diameter of 5 end of diffuser is equal with upper 7 internal diameter of barrel chamber, and diffuser 5 connects lower barrel chamber 8, lower barrel chamber 8 and upper 7 internal diameter of barrel chamber
Equal, lower barrel chamber 8 connects lower contact 6.
As shown in figure 3, coiled tubing is pumped into drilling fluid by ground, top connection 1 is connected with coiled tubing, and drilling fluid is connect from above
First 1 enters in negative-pressure ward tool, when drilling fluid flows through funnelform nozzle 2, with the contraction of 2 internal diameter of nozzle, drilling well liquid stream
Speed incrementally increases, and according to Bernoulli Jacob's energy equation, generates pressure difference, negative pressure in the annular space in negative-pressure ward tool and outside tool at this time
It is negative pressure state in aspirator, the drilling fluid in annular space with landwaste can be aspirated is entered in trunnion 4 by inlet 3 and taken out with negative pressure
Diffuser 5 is flowed into suction tool after original drilling fluid mixed, 5 internal diameter of diffuser is gradually increased, until restoring to manage with top connection 1
Diameter is identical, makes pressure of the pressure recovery in top connection feed liquor, and the drilling fluid inflow with landwaste particle is connect down with drilling tool
It after connector 6, flows into drilling tool, then carries out particle stream flow drilling well.
Coiled tubing is that the general coiled tubing of each size provides hydraulic pressure for conveying drilling fluid.
Drilling tool can be jet nozzle or other are suitble to the drill assembly of specific operating condition.
Claims (3)
1. a kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well, it is characterised in that: this for connecting
The negative-pressure ward tool of continuous oil pipe self-loopa particle stream flow drilling well is cylinder, and female thread is arranged at top connection (1) in cylinder upper end,
Female thread is arranged at lower contact (6) in cylinder lower end, and the cylinder lumen between top connection (1) and lower contact (6) is followed successively by cylinder
Chamber (7), nozzle segment, trunnion (4), diffuser (5), lower barrel chamber (8), the cylinder lumen of nozzle segment are tapered, formation nozzle
(2), nozzle (2) connects trunnion (4), is uniformly arranged on the outer wall of trunnion (4) inlet (3), inlet (3) be it is skewed,
Skewed inlet (3) is connect between trunnion (4) and diffuser (5) using wedge-shaped transition, diffuser towards direction of flow
(5) inner cavity is flaring, and the internal diameter of diffuser (5) end is equal with upper barrel chamber (7) internal diameter, and diffuser (5) connects lower barrel chamber
(8), lower barrel chamber (8) is equal with upper barrel chamber (7) internal diameter, and lower barrel chamber (8) connects lower contact (6).
2. the negative-pressure ward tool according to claim 1 for coiled tubing self-loopa particle stream flow drilling well, feature
Be: the top connection (1) and coiled tubing are threadedly coupled by screw thread conversion head, and lower contact (6) is connect with drilling tool thread.
3. the negative-pressure ward tool according to claim 1 or 2 for coiled tubing self-loopa particle stream flow drilling well, special
Sign is: the trunnion (4) is circumferentially arranged, and there are four inlet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821692380.XU CN208816047U (en) | 2018-10-18 | 2018-10-18 | A kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821692380.XU CN208816047U (en) | 2018-10-18 | 2018-10-18 | A kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816047U true CN208816047U (en) | 2019-05-03 |
Family
ID=66279978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821692380.XU Expired - Fee Related CN208816047U (en) | 2018-10-18 | 2018-10-18 | A kind of negative-pressure ward tool for coiled tubing self-loopa particle stream flow drilling well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816047U (en) |
-
2018
- 2018-10-18 CN CN201821692380.XU patent/CN208816047U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 Termination date: 20191018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |