CN207609375U - Interior chip removal jet stream decompression drill string pipe nipple - Google Patents
Interior chip removal jet stream decompression drill string pipe nipple Download PDFInfo
- Publication number
- CN207609375U CN207609375U CN201721063463.8U CN201721063463U CN207609375U CN 207609375 U CN207609375 U CN 207609375U CN 201721063463 U CN201721063463 U CN 201721063463U CN 207609375 U CN207609375 U CN 207609375U
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- Prior art keywords
- drill string
- pipe nipple
- string pipe
- negative pressure
- sprue
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- 210000002445 nipple Anatomy 0.000 title claims abstract description 93
- 230000006837 decompression Effects 0.000 title claims abstract description 43
- 238000005553 drilling Methods 0.000 claims abstract description 68
- 239000012530 fluid Substances 0.000 claims abstract description 60
- 239000011435 rock Substances 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
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- 238000013459 approach Methods 0.000 description 2
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- 210000003101 oviduct Anatomy 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides a kind of interior chip removal jet stream decompression drill string pipe nipple, including：Drill string pipe nipple main body, the drill string pipe nipple body interior are provided with buck configuration, landwaste suction passage and the sprue for conveying initial drilling fluid；The buck configuration and sprue connection are simultaneously oppositely arranged with the sprue, the outlet of the landwaste suction passage is connected to the buck configuration, for making the initial drilling fluid by the sprue reversely be gone out from the buck configuration to generate negative pressure, the landwaste suction passage is used to that the rock drilling fluid of taking in shaft bottom to be sucked the drill string pipe nipple body interior using the negative pressure buck configuration.The interior chip removal jet stream decompression drill string pipe nipple of the utility model can reduce bottom hole pressure difference, realize that underbalance improves rate of penetration.
Description
Technical field
The utility model is related to drilling tool technology more particularly to a kind of interior chip removal jet stream decompression drill string pipe nipples, belong to brill
Well and oil gas field of engineering technology.
Background technology
Accelerate the exploration and development speed of unconventionaloil pool, cost of exploration ＆ development is reduced, for promoting China's unconventionaloil pool
Industrialization is realized " unconventionaloil pool revolution ", and China's oil gas imbalance between supply and demand is alleviated, and has important strategic importance.
Bit speed is one of the principal element for influencing unconventionaloil pool cost.In the typical oil/gas well of a bite, approach
50% expense is crept into for machinery.According to the U.S. research with practice have shown that：If drilling efficiency doubles, total drilling well expense
With about 25% can be reduced.Therefore, it is the primary pursuit for reducing drilling cost, realizing maximizing the benefits to improve rate of penetration.
It reduces bottom pressure and realizes that shaft bottom local reverse-circulation can effectively improve rate of penetration, on the one hand reduce shaft bottom pressure
Difference can reduce the plasticity of shaft bottom rock to be broken, and make bottom rock from plasticity to Transition of Brittleness, to reduce breaking strength,
Improve crushing efficiency；On the other hand it realizes that the chip hold down effect of shaft bottom landwaste can be mitigated or eliminated in shaft bottom local reverse-circulation, promotes new
The landwaste of generation is detached from bottom rock parent in time, avoids repeating broken.
Utility model content
In view of the foregoing drawbacks, the utility model provides a kind of interior chip removal jet stream decompression drill string pipe nipple, for improving drilling well
Efficiency.
The utility model provides a kind of interior chip removal jet stream decompression drill string pipe nipple, including：Drill string pipe nipple main body, the drill string are short
Section body interior is provided with buck configuration, landwaste suction passage and the sprue for conveying initial drilling fluid；
The buck configuration and sprue connection are simultaneously oppositely arranged with the sprue, and the landwaste suction passage goes out
Mouth is connected to the buck configuration, and the buck configuration is for making to tie from the decompression by the initial drilling fluid of the sprue
Structure is reversely gone out to generate negative pressure, and the landwaste suction passage is used for the taking shaft bottom described in the sucking of rock drilling fluid using the negative pressure
Drill string pipe nipple body interior；The sprue top is circular channel, and the bottom end of the sprue is trapezoidal channel.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the buck configuration includes reversed high-speed jet spray
Mouth and outlet with the reversed high-speed jet nozzle, and it is logical along the negative pressure transportation that the negative direction of the sprue extends
Road；
The entrance of the reversed high-speed jet nozzle is connected to the sprue.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the axis of the reversed high-speed jet nozzle and institute
It is β, 90 ° of 0 °≤β ＜ to state the angle between the axis of sprue.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the entrance of the landwaste suction passage is arranged described
The bottom face of drill string pipe nipple main body, the outlet of the landwaste suction passage are connected to the negative pressure transportation channel.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein wrapped by bottom end to top in the negative pressure transportation channel
Include the negative pressure chamber being sequentially connected to, trunnion and bypass pipe.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the first entrance of the negative pressure chamber with it is described reversed
The outlet of high-speed jet nozzle, the outlet of the second entrance of the negative pressure chamber and the landwaste suction passage.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the bypass pipe is the pipe that both ends bore does not wait,
In, heavy caliber port is the outlet of the bypass pipe, and small-bore port is the entrance of the bypass pipe.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the outlet of the bypass pipe and drill string and the borehole wall it
Between formed annular space connection.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein further include top connection and lower contact, the top connection
It is arranged at the top of the drill string pipe nipple main body, the lower contact is arranged in the bottom of the drill string pipe nipple main body.
Chip removal jet stream decompression drill string pipe nipple in as described above, wherein the top connection with drill string for being fixedly connected, institute
Lower contact is stated for being fixedly connected with drill bit.
Interior chip removal jet stream decompression drill string pipe nipple provided by the utility model, it is simple in structure, it is easy to process, pass through buck configuration
Negative pressure is generated in drill string pipe nipple body interior, reduces bottom hole pressure difference, landwaste suction passage bores the rock of taking that shaft bottom generates using negative pressure
Well liquid, which carries out suction, makes drilling fluid reacting cycle, final to realize that underbalance improves rate of penetration.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the sectional view of chip removal jet stream decompression drill string pipe nipple in the utility model embodiment；
Fig. 2 is the right view of Fig. 1.
Reference sign：
1：Drill string pipe nipple main body；
101：Sprue；
102：Landwaste suction passage；
103：Top connection；
104：Lower contact；
201：Reversed high-speed jet nozzle；
202：Negative pressure transportation channel；
202a：Negative pressure chamber；
202b：Trunnion；
202c：Bypass pipe；
A：First entrance；
B：Second entrance.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Technical solution in type embodiment is clearly and completely described, it is clear that described embodiment is the utility model part
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
The embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot understand the limit to the utility model
System.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "vertical" ", water
It is flat ", "top", "bottom", "inner", the orientation of the instructions such as "outside" or position relationship be that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than indicates either to imply signified device or element
It must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the utility model, the meaning of " plurality " is two or more, accurately specifically provide unless otherwise.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should broadly understood, for example, can make to be fixedly connected, can also be by connected between intermediate media,
It can be the interaction relationship of the connection or two elements inside two elements.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention as the case may be.
It should be noted that in the present invention, the position for being proximate to drill string one end of orientation " top " instruction, orientation
" bottom end " refers to that orientation " proximal end " refers to leaning in the radial direction in drill string pipe nipple bottom face close to the position of drill bit one end
The position of nearly drill string pipe nipple central axes one end, orientation " distal end " are referred in drill string pipe nipple bottom face in the radial direction far from brill
The position of column pipe nipple central axes one end, direction " forward direction " refer to the direction that initial drilling fluid enters, and direction " reversed " refers to will be first
Beginning drilling fluid approach axis changes 90 ° -180 ° of direction.
In addition, in the present invention, initial drilling fluid refers to pumping out from slush pump and flow to drill string, do not carry rock
The drilling fluid of bits, rock slag；Take rock drilling fluid refer to drilling fluid by shaft bottom working face, carry the drilling fluid of landwaste, rock slag.
Fig. 1 is the sectional view of chip removal jet stream decompression drill string pipe nipple in the utility model embodiment, and Fig. 2 is that the right side of Fig. 1 regards
Figure.
Fig. 1-Fig. 2 is please referred to, the interior chip removal jet stream decompression drill string pipe nipple of the present embodiment includes：Drill string pipe nipple main body 1, drill string
The sprue 101 and landwaste suction passage 102 that pipe nipple main body 1 is internally provided with buck configuration, conveys initial drilling fluid；Decompression knot
Structure and the connection of sprue 101 are simultaneously oppositely arranged with sprue 101, and the outlet of landwaste suction passage 102 is connected to buck configuration, decompression
Structure is for making the initial drilling fluid by sprue 101 reversely be gone out from buck configuration to generate negative pressure, landwaste suction passage 102
For the taking shaft bottom inside rock drilling fluid sucking drill string pipe nipple main body 1 using negative pressure.
It is offered inside drill string pipe nipple main body 1 in the present embodiment and enters drill string pipe nipple main body 1 for initial drilling fluid
Sprue 101, it is conceivable that the top of the drill string pipe nipple main body 1 is connect with drill string (not shown), and sprue
101 entrance is connected to the liquid outlet of drill string, so that the initial drilling fluid in drill string passes through the entrance of sprue 101
Into sprue 101.
Specifically, when in use, top is fixed together the drill string pipe nipple main body 1 in the present embodiment with drill string, bottom
End is fixed together with drill bit, can be threadably secured connection.The interior chip removal jet stream decompression drill string of the present embodiment is short
Section can be the external screw thread cooperation that 1 top of drill string pipe nipple main body is provided with internal thread and drill string setting, achieve a fixed connection；Or
Person, 1 top of drill string pipe nipple main body are provided with the screw-internal thread fit of external screw thread and drill string setting, achieve a fixed connection；The present embodiment
Interior chip removal jet stream decompression drill string pipe nipple can be 1 bottom end of drill string pipe nipple main body be provided with internal thread and drill string setting outer spiral shell
Line coordinates, and achieves a fixed connection；Alternatively, 1 bottom end of drill string pipe nipple main body is provided with external screw thread and the internal thread of drill string setting is matched
It closes, achieves a fixed connection.Certainly, it can also be realized by connection types such as welding between drill string pipe nipple main body 1 and drill string, drill bit
It is fixedly connected, the utility model is not especially limited.
The drill bit that the utility model pair is connected with 1 bottom end of drill string pipe nipple main body is not limited, and can be commonly used in the art
Drill bit, such as PDC drill bit, in general, can along the circumferential direction be arranged at intervals with multiple PDC wings, PDC in PDC drill bit end bottom end
Wing is the workpiece of bit cutting rock, and several PDC cutting tooths are distributed in surface.
In the present embodiment, the cross section of sprue 101 can be round, oval, polygon or irregular shape
Deng.In order to reduce sprue 101 to the resistance of initial drilling fluid and increase initial drilling fluid to the cleaning dynamics in shaft bottom, this reality
The major part circular channel of a sprue 101 is applied, the bottom end of sprue 101 is preferably trapezoidal channel.Meanwhile sprue
101 can be individual pipeline, can also be by opening up through-hole in a cylindrical part inside drill string pipe nipple main body 1
Mode forms above-mentioned sprue 101, it is, of course, also possible to using other structures form, the utility model is not specifically limited.Together
When the utility model do not limit the specific number of sprue 101 yet.
In the present embodiment, buck configuration is specifically located at the inside of drill string pipe nipple main body 1, buck configuration and sprue
101 connections and oppositely arranged, so as to generate negative pressure using the initial drilling fluid in sprue 101, by negative pressure to well
The effect of underflow body and landwaste reduces the local pressure in shaft bottom, reduces bottom hole pressure difference, and landwaste is promoted to be detached from shaft bottom and returned on accelerating,
Realize that local underbalance improves rate of penetration.The utility model is not limited the specific manifestation form of buck configuration.
In the present embodiment, landwaste suction passage 102 is specifically located at the inside of drill string pipe nipple main body 1, and main function is
It is provided into the channel inside drill string pipe nipple main body 1 for the rock drilling fluid of taking in shaft bottom, it can be under the negative pressure that buck configuration generates
It helps the rock drilling fluid of taking in shaft bottom to enter 1 inside realization reacting cycle of drill string pipe nipple main body, reduces chip hold down effect.The utility model pair
The concrete structure of landwaste suction passage 102 is not limited, as long as above-mentioned function can be realized.
Buck configuration and landwaste suction passage 102 in the present embodiment can be according to specific inside drill string pipe nipple main body 1
Structure is configured, and the utility model does not limit buck configuration and the specific number of landwaste suction passage 102 yet, can be one or
Multiple, specific number can be carried out with actual conditions of the interior chip removal jet stream decompression drill string pipe nipple according to the present utility model in drilling well
Setting.
Interior chip removal jet stream decompression drill string pipe nipple provided in this embodiment is simple in structure, easy to produce and process, short by drill string
Save the sprue 101 of main body 1 so that initial drilling fluid enters inside drill string pipe nipple main body 1, and buck configuration utilizes drill string pipe nipple master
Initial drilling fluid inside body 1 generates negative pressure, and landwaste suction passage 102 utilizes negative pressure by the drilling fluid of landwaste, rock slag and shaft bottom
It sucks inside drill string pipe nipple main body 1, to complete the reacting cycle of drilling fluid, the utility model can speed up the stream for taking rock drilling fluid
Dynamic, efficient bottom-hole cleaning landwaste and rock slag improve the efficiency of drilling well, and shaft bottom chip hold down effect and landwaste is avoided to repeat broken ask
Topic, and chip hold down effect and leakproof can also be reduced.
On the basis of the above embodiments, the buck configuration in the interior chip removal jet stream decompression drill string pipe nipple of the present embodiment includes
Reversed high-speed jet nozzle 201 and the outlet with reversed high-speed jet nozzle 201, and along the negative direction of sprue 101
The negative pressure transportation channel 202 of extension；The entrance of reversed high-speed jet nozzle 201 is connected to sprue 101.
Specifically, the entrance of reversed high-speed jet nozzle 201 is connected to sprue 101, reversed high-speed jet nozzle 201
Outlet is connected to the entrance in negative pressure transportation channel 202, and the initial drilling fluid so as to be further separated into sprue 101 makes part master
Entrance of the initial drilling fluid through reversed high-speed jet nozzle 201 in runner 101 enters reversed high-speed jet nozzle 201, then by
The outlet of reversed high-speed jet nozzle 201 enters to negative pressure transportation channel 202.
Reversed high-speed jet nozzle 201 in the present embodiment is referred to 90 ° of the inflow direction change-of initial drilling fluid
180 ° of nozzle, can be in the inlet in negative pressure transportation channel 202 by the initial drilling fluid of the reversed high-speed jet nozzle 201
It is sprayed to the top of drill string pipe nipple main body 1 with the direction opposite with initial drilling fluid inflow direction, in negative pressure transportation channel
202 entrance generates negative pressure.Under the action of the negative pressure, the rock drilling fluid of taking in shaft bottom can be by the entrance brill of landwaste suction passage 102
Inside column pipe nipple main body 1, enter negative pressure transportation channel 202 using the entrance in negative pressure transportation channel 202, it is logical by negative pressure transportation
The outlet discharge drill string pipe nipple main body 1 in road 202 realizes the reacting cycle of drilling fluid.
Reversed high-speed jet nozzle 201 can determine to generate negative pressure in shaft bottom with the position of sprue 101 being specifically connected to
Size, the position that reversed high-speed jet nozzle 201 and sprue 101 are specifically connected to is closer to the bottom end of sprue 101, shaft bottom
The negative pressure of generation is bigger.In Fig. 1, reversed high-speed jet nozzle 201 is located proximate to mainstream with what sprue 101 was specifically connected to
The position being specifically connected to can be arranged for different drilling well situation staff in the inclined bottom in road 101.
In addition, the present embodiment is not limited the axial section in negative pressure transportation channel 202, can be regular or irregular
Structure takes the discharge of rock drilling fluid for convenience, and the axial section in the negative pressure transportation channel 202 in the present embodiment is irregular
The thick horn-type structure in the thin top of structure, i.e. bottom end.
The present embodiment is not particularly limited the number of reversed high-speed jet nozzle 201 and negative pressure transportation channel 202, can be with
Number for one or more, but both reversed high-speed jet nozzle 201 and negative pressure transportation channel 202 must correspond.
It should be noted that being suitable for various situations for the ease of the interior chip removal jet stream decompression drill string pipe nipple in the present embodiment
Oil/gas well drilling well exploitation, buck configuration generate vacuum magnitude can also be according to the axis of reversed high-speed jet nozzle 201
Angle β between the axis of sprue 101 is adjusted, wherein 0 °≤β<90 °, when β is smaller, the negative pressure of generation is bigger, promotees
It is bigger that the power returned on shaft bottom and acceleration is detached from into landwaste.
Further, the entrance setting of the landwaste suction passage 102 in the interior chip removal jet stream decompression drill string pipe nipple of the present embodiment
It is connected to negative pressure transportation channel 202 in the outlet of the bottom face of drill string pipe nipple main body 1, landwaste suction passage 102.
Landwaste suction passage 102 is that the rock drilling fluid of taking in shaft bottom enters unique passage inside drill string pipe nipple main body 1, specifically
The bottom face in drill string pipe nipple main body 1 is arranged in ground, the entrance of landwaste suction passage 102, and the outlet of landwaste suction passage 102 and negative pressure are defeated
Channel 202 is sent to be connected to.Since the outlet of landwaste suction passage 102 is connected to negative pressure transportation channel 202, landwaste suction passage 102
Exit have negative pressure, taking rock drilling fluid and can be sucked into drill string pipe nipple main body 1 by the entrance of landwaste suction passage 102 to shaft bottom
Inside, i.e., the entrance through landwaste suction passage 102 enters landwaste suction passage 102, then enters negative pressure by the outlet of landwaste suction passage 102
Transfer passage 202 is discharged drill string pipe nipple main body 1 finally by negative pressure transportation channel 202, completes the reacting cycle of drilling fluid.
For the negative pressure for utilizing buck configuration to generate to greatest extent, the outlet of landwaste suction passage 102 can be with negative pressure transportation
Entrance (i.e. the outlet of the reversed high-speed jet nozzle 201) connection in channel 202.
The cross section of landwaste suction passage 102 can be round, oval, polygon or irregular shape etc..In order to subtract
Small landwaste suction passage 102 makes to take the unimpeded of rock drilling fluid, the present embodiment landwaste suction passage 102 is excellent to taking the resistance of rock drilling fluid
It is selected as the small oviduct of entrance large outlet.
The number of landwaste suction passage 102 is not particularly limited in the present embodiment, can be one or more, still,
The number of landwaste suction passage 102 and the number in both negative pressure transportation channels 202 must correspond.
In the present embodiment, negative pressure transportation channel 202 includes negative pressure chamber 202a, the larynx being sequentially connected to by bottom end to top
The outlet of the first entrance A of pipe 202b and bypass pipe 202c, negative pressure chamber 202a and reversed high-speed jet nozzle 201,
The second entrance B of 202a negative pressure chamber then outlets with landwaste suction passage 102.
Negative pressure transportation channel 202 can be refined, make its by bottom end to top specifically include successively negative pressure chamber 202a,
Trunnion 202b and bypass pipe 202c, and negative pressure chamber 202a is connected to trunnion 202b, and trunnion 202b is connected to bypass pipe 202c.
Wherein, negative pressure chamber 202a includes two entrances, respectively first entrance A and second entrance B, first entrance A and reversed high rapid fire
The outlet of flow nozzle 201, the initial drilling fluid for being ejected using reversed high-speed jet nozzle 201 generate negative pressure；The
The outlet of two entrance B and landwaste suction passage will take rock drilling fluid for the pressure using negative pressure chamber 202a and be inhaled by landwaste
It takes part in Taoism and is sucked into negative pressure chamber 202a, drill string pipe nipple main body 1 is then discharged by trunnion 202b, bypass pipe 202c, completes drilling fluid
Reacting cycle.
It further, can be by bypass pipe in order to reduce the power taken rock drilling fluid and sprayed outward from negative pressure chamber 202a
202c is set as both ends bore not equal pipe, wherein heavy caliber port is the outlet of bypass pipe 202c, and small-bore port is bypass
The entrance of pipe 202c.
Specifically, the outlet of small-bore port and trunnion 202b, between bigbore port and drill string and the borehole wall
The annular space connection (not shown) of formation, when taking rock drilling fluid under the action of negative pressure, the entrance through landwaste suction passage 102 enters rock
Consider to be worth doing suction passage 102, then by landwaste suction passage 102 outlet ejection enter negative pressure chamber 202a into B via second entrance after, can import by
The initial drilling fluid in part that reversed high-speed jet nozzle 201 ejects forms high-speed jet, by bottom end to top sequentially through negative pressure
Room 202a, trunnion 202b, bypass pipe 202c, eventually enter into annular space.When row is to bypass pipe 202c, due to the small outlet of its import
In bypass pipe 202c reduction of speed can occur for big special construction, high-speed jet.
Referring to Fig.1, the interior chip removal jet stream decompression drill string pipe nipple of the present embodiment further includes top connection 103 and lower contact 104, on
Connector 103 is arranged at the top of drill string pipe nipple main body 1, and lower contact 104 is arranged in the bottom of drill string pipe nipple main body 1.
Top connection 103 with drill string for being fixedly connected in the present embodiment, and lower contact 104 with drill bit for being fixedly connected.
Specifically, top connection 103 is fixedly connected with drill string, can be clamping, can also be threaded connection etc..In order to make company
Connect more stable, the present embodiment top connection 103 is preferably connected through a screw thread with drill string, can be that top connection 103 is provided with external screw thread,
Drill string be provided with the matched internal thread of external screw thread, can also be that top connection 103 is provided with internal thread, drill string be provided with it is interior
The matched external screw thread of screw thread.
Lower contact 104 is fixedly connected with drill bit, can be clamping, can also be threaded connection etc..The present embodiment lower contact
104 are preferably connected through a screw thread with drill bit, can be that lower contact 104 is provided with external screw thread, drill bit is provided with to match with external screw thread
The internal thread of conjunction can also be that lower contact 104 is provided with internal thread, and drill string is provided with and the matched external screw thread of internal thread.Spiral shell
Line can be angular thread, rectangular thread etc., and the utility model is not limited the concrete structure of screw thread.
The specific work process of the interior chip removal jet stream decompression drill string pipe nipple of above-described embodiment is as follows：
In drilling process, the initial drilling fluid of high pressure enters sprue 101 by drill string, a part of initial drilling fluid of high pressure by
Sprue 101 continues towards shaft bottom, and the initial drilling fluid of another part high pressure is sprayed by reversed high-speed jet nozzle 201, is formed high
Rapid fire stream, high-speed jet generate negative pressure in negative pressure chamber 202a, and the negative pressure in negative pressure chamber 202a is by landwaste suction passage 102 to shaft bottom
Fluid and landwaste aspirated, shaft bottom landwaste is passed through with shaft bottom drilling fluid under the swabbing action of reversed high-speed jet nozzle 201
Landwaste suction passage 102 enters negative pressure chamber 202a.
The reversed high-speed jet nozzle 201 of buck configuration sprays high-speed jet, and generating negative pressure volume in negative pressure chamber 202a inhales rock
Bits and shaft bottom drilling fluid, shaft bottom landwaste is with shaft bottom drilling fluid by remittance high-speed jet, height at negative pressure chamber 202a and trunnion 202b
Rapid fire stream is discharged into annular space in bypass pipe 202c after speed lowers.
The inside water conservancy structure and runner of the interior chip removal jet stream decompression drill string pipe nipple of the utility model are relatively easy, are easy to raw
Production and processing, principle of the buck configuration therein based on jet pump, can suction wells bed rock bits and shaft bottom drilling fluid, make shaft bottom rock
Bits and fluid return out inside drill string pipe nipple, realize shaft bottom reacting cycle, reduce bottom hole pressure difference, realize that underbalance improves power auger
Speed.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of interior chip removal jet stream decompression drill string pipe nipple, which is characterized in that including：Drill string pipe nipple main body, the drill string pipe nipple master
Body is internally provided with buck configuration, landwaste suction passage and the sprue for conveying initial drilling fluid；
The buck configuration and the sprue connection simultaneously it is oppositely arranged with the sprue, the outlet of the landwaste suction passage and
The buck configuration connection, the buck configuration is for keeping the initial drilling fluid by the sprue anti-from the buck configuration
To going out to generate negative pressure, the landwaste suction passage is used to that the rock drilling fluid of taking in shaft bottom to be sucked the drill string using the negative pressure
Pipe nipple body interior；
The sprue top is circular channel, and the bottom end of the sprue is trapezoidal channel.
2. interior chip removal jet stream decompression drill string pipe nipple according to claim 1, which is characterized in that the buck configuration includes anti-
Outlet to high-speed jet nozzle and with the reversed high-speed jet nozzle, and extend along the negative direction of the sprue
Negative pressure transportation channel；
The entrance of the reversed high-speed jet nozzle is connected to the sprue.
3. interior chip removal jet stream decompression drill string pipe nipple according to claim 2, which is characterized in that the reversed high-speed jet spray
Angle between the axis of mouth and the axis of the sprue is β, 90 ° of 0 °≤β ＜.
4. interior chip removal jet stream decompression drill string pipe nipple according to claim 3, which is characterized in that the landwaste suction passage enters
The bottom face in the drill string pipe nipple main body is arranged in mouth, and the outlet of the landwaste suction passage is connected to the negative pressure transportation channel.
5. interior chip removal jet stream decompression drill string pipe nipple according to claim 4, which is characterized in that the negative pressure transportation channel by
Bottom end to top includes the negative pressure chamber being sequentially connected to, trunnion and bypass pipe.
6. interior chip removal jet stream decompression drill string pipe nipple according to claim 5, which is characterized in that the first of the negative pressure chamber enters
The outlet of mouth and the reversed high-speed jet nozzle, the outlet of the second entrance of the negative pressure chamber and the landwaste suction passage
Connection.
7. interior chip removal jet stream decompression drill string pipe nipple according to claim 6, which is characterized in that the bypass pipe is two-port
The pipe that diameter does not wait, wherein heavy caliber port is the outlet of the bypass pipe, and small-bore port is the entrance of the bypass pipe.
8. interior chip removal jet stream decompression drill string pipe nipple according to claim 7, which is characterized in that the outlet of the bypass pipe with
The annular space connection formed between drill string and the borehole wall.
9. according to any interior chip removal jet stream decompression drill string pipe nipples of claim 1-8, which is characterized in that further include top connection
And lower contact, the top connection are arranged at the top of the drill string pipe nipple main body, the lower contact is arranged in the drill string pipe nipple
The bottom of main body.
10. interior chip removal jet stream decompression drill string pipe nipple according to claim 9, which is characterized in that the top connection be used for
Drill string is fixedly connected, and the lower contact with drill bit for being fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063463.8U CN207609375U (en) | 2017-08-23 | 2017-08-23 | Interior chip removal jet stream decompression drill string pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063463.8U CN207609375U (en) | 2017-08-23 | 2017-08-23 | Interior chip removal jet stream decompression drill string pipe nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207609375U true CN207609375U (en) | 2018-07-13 |
Family
ID=62793192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721063463.8U Expired - Fee Related CN207609375U (en) | 2017-08-23 | 2017-08-23 | Interior chip removal jet stream decompression drill string pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207609375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461153A (en) * | 2017-08-23 | 2017-12-12 | 中国石油大学(北京) | Interior chip removal jet stream decompression drill string pipe nipple |
| CN110043207A (en) * | 2019-05-13 | 2019-07-23 | 河南理工大学 | A kind of underground is adjustable self-advancing type carbon dioxide jet drilling prosthetic device and method |
-
2017
- 2017-08-23 CN CN201721063463.8U patent/CN207609375U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461153A (en) * | 2017-08-23 | 2017-12-12 | 中国石油大学(北京) | Interior chip removal jet stream decompression drill string pipe nipple |
| CN107461153B (en) * | 2017-08-23 | 2023-09-26 | 中国石油大学(北京) | Inner chip removal jet depressurization drill string nipple |
| CN110043207A (en) * | 2019-05-13 | 2019-07-23 | 河南理工大学 | A kind of underground is adjustable self-advancing type carbon dioxide jet drilling prosthetic device and method |
| CN110043207B (en) * | 2019-05-13 | 2024-04-05 | 河南理工大学 | Underground adjustable self-advancing carbon dioxide jet drilling repairing device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 |