CN207453900U - A kind of hydraulic type continuous pressure send drill tools - Google Patents
A kind of hydraulic type continuous pressure send drill tools Download PDFInfo
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- CN207453900U CN207453900U CN201721029685.8U CN201721029685U CN207453900U CN 207453900 U CN207453900 U CN 207453900U CN 201721029685 U CN201721029685 U CN 201721029685U CN 207453900 U CN207453900 U CN 207453900U
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Abstract
This application discloses a kind of hydraulic type continuous pressures to send drill tools, including top connection, central tube, outer barrel, with flow cartridge, pressurization cylinder, sleeve and elastic component.This hydraulic type continuous pressure send mutual cooperation of the drill tools by more than pure mechanic structure, continuous cycles lower drilling string can be promoted to send brill under the drilling fluid of constant flow rate, preferably solves the drill string backing pressure problem in horizontal segment drilling, effectively extend the drilling length of horizontal section wellbore, and simple in structure, few easy workout part, reliability are high, service life is long, adapts to underground complex working condition.
Description
Technical field
The utility model is related to horizontal well drilling field of engineering technology, more particularly to a kind of hydraulic type continuous pressure send driller
Tool.
Background technology
Horizontal well refers to that hole deviation reaches or close to 90 °, well bore creeps into the well of certain length along horizontal direction, because of its tool
There are good economic benefit and social benefit, Horizontal Well Drilling well development obtains large-scale application since the 1990s,
It is widely used in as conventional drilling technologies in substantial amounts of development of oil and gas reservoir.
In straight well drilling, it is mainly the own wt by drill string to send the bit pressure generated during brill, between drill string and the borehole wall
Frictional resistance is very small；And in the drilling construction of horizontal well horizontal segment, drill string lies low on the lower borehole wall of wellbore, drill string and well
Frictional resistance between wall is relatively large, with the continuous extension of horizontal segment drilling length, the friction resistance accumulated between drill string and the borehole wall
Power is increasing, and drill string backing pressure becomes the common problem in horizontal segment drilling construction, this also directly results in drill string pressurization and send brill
Difficulty, so as to seriously affect the work efficiency of drill bit or even part of horizontal well is caused to be difficult to be drilled into design well depth.
In order to meet the drilling well demand of horizontal section wellbore, the instrument for being used to improve bit pressure at present both at home and abroad is mainly that waterpower adds
Depressor, operation principle are turn on pump circulating fluids, and pressure drop is formed inside hydraulic thruster, which acts on piston end surface
Thrust is formed, thrust promotion descent of piston terminates until stroke, and the thrust is exactly the bit pressure provided for lower drilling string.And water
As soon as the piston stroke of power pressurizer is covered, upper drilling string wants downlink compensation stroke that must stop or reduce circulation of drilling fluid
Flow so that operation exception is complicated, this results in hydraulic thruster to be difficult to continuous pressure work, the frequent backing pressure of drill string in drilling,
The bit operation efficiency in horizontal segment drilling is not only reduced, and effective extending level section wellbore drilling length can not be solved
Problem.
In conclusion during how solving horizontal well drilling, it is impossible to be provided for drill bit and continuously send brill bit pressure, cause to bore
Column bracket pressure, can not effectively extending level section wellbore drilling length the problem of, become that those skilled in the art are urgently to be resolved hurrily to be asked
Topic.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of hydraulic type continuous pressures to send drill tools, to give drill bit
Offer continuously send brill bit pressure, effectively eliminates drill string backing pressure, the drilling length of extending level section wellbore.
In order to achieve the above objectives, the utility model provides following technical scheme：
A kind of hydraulic type continuous pressure send drill tools, including：
For the top connection being connected with upper drilling string；
Central tube is connected to the endoporus lower part of the top connection, and through hole is offered on the tube wall of the central tube under
Through hole, the upper through hole is close to the lower face of the top connection；
Outer barrel is connected to the periphery lower part of the top connection, pressure relief vent is offered on the barrel of the outer barrel；
With flow cartridge, movement is arranged between the central tube and the outer barrel, the inner wall with flow cartridge and it is described in
The outer wall fitting of heart pipe is slidingly sealed, the load segment of the seal section and lower part that top is included with flow cartridge, the seal section
Outer wall is bonded with the inner wall of the outer barrel and is slidingly sealed, and there is assembling between the inner wall of the load segment and the outer barrel
Chamber offers the current by pass for connecting the assembly cavity on the seal section, and for move axially to institute with flow cartridge when described
When stating current by pass and being connected with the pressure relief vent, the pressure relief vent is connected with the assembly cavity, is opened on the barrel of the load segment
Equipped with the flow-in hole for being connected with the lower through-hole, it is provided on the outer wall of the load segment below the flow-in hole
Positioning step, the upper surface with flow cartridge are provided with the appearance liquid bath for the upper through hole connection；
Pressurize cylinder, and one end is inserted into the outer barrel, the other end for connecting lower drilling string, the pressurization cylinder with it is described outer
It the /V of cylinder circumferential direction and is in axial sliding connection, the upper end of the pressurization cylinder is connected with described with flow cartridge, the top of the cylinder that pressurizes
Restriction portion is provided with, the position that the outer wall for pressurizeing cylinder is located at restriction portion both ends is respectively arranged with by-pass prot and lower bypass
Hole；
Sleeve, is sheathed on the top of the load segment with flow cartridge and the pressurization cylinder, the outer wall of the sleeve with it is described
The inner wall fitting of outer barrel is slidingly sealed, and the upper end of the sleeve is provided with what is contacted with the limited step axial limiting
Elastic component installation cavity is formed between the outer wall of support base, the inner wall of the sleeve and the load segment；
Elastic component, in the elastic component installation cavity, and elastic reaction is distinguished in the inner face of the support base in both ends
With the upper surface of the pressurization cylinder.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the pressurization cylinder passes through key with the outer barrel
Slot structure carries out circumferential /V.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the keyway arrangements include：
The first keyway being arranged on the inner wall of the outer barrel；
The second keyway with first keyway cooperation being arranged on the outer wall of the pressurization cylinder；
The stop pin being embedded in first keyway and second keyway.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the outer wall for being sheathed on the pressurization cylinder is further included
Drop-preventing cover that is upper and being connected with the lower port of the outer barrel.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the lower end of the drop-preventing cover and the outer barrel
It is threadedly coupled.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the current by pass is to be arranged at the sealing
Discharge orifice in section, the import of the discharge orifice are described to let out on the step surface between the seal section and the load segment
The outlet of discharge orifice is in the outside wall surface of the seal section.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, axial direction of the discharge orifice along the seal section
It sets.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the current by pass is to be arranged at the sealing
Dredging flow groove in the outside wall surface of section, the current by pass is formed between the dredging flow groove and the internal face of the outer barrel.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the elastic component is compression spring or elastic rubber
Glue.
Preferably, in above-mentioned hydraulic type continuous pressure send drill tools, the lower end outer wall of the top connection with it is described outer
The upper end outer wall thread connection of cylinder, the upper end outer wall of the central tube are threadedly coupled with the lower end inner wall of the top connection.
Compared with prior art, the beneficial effects of the utility model are：
Hydraulic type continuous pressure provided by the utility model send drill tools, including top connection, central tube, outer barrel, flow
Cylinder, pressurization cylinder, sleeve and elastic component, top connection are used to be connected with upper drilling string；Central tube is connected to the endoporus lower part of top connection,
Through hole and lower through-hole are offered on the tube wall of central tube, upper through hole is close to the lower face of top connection；Outer barrel, which is connected to, to be connect
The periphery lower part of head offers pressure relief vent on the barrel of outer barrel；It is arranged between central tube and outer barrel, matches somebody with somebody with flow cartridge movement
The inner wall of flow cartridge is bonded with the outer wall of central tube and is slidingly sealed, and the seal section on top and the load segment of lower part are included with flow cartridge, close
The outer wall of envelope section is bonded with the inner wall of outer barrel to be slidingly sealed, and there are assembly cavity, sealings between load segment and the inner wall of outer barrel
The current by pass of connection assembly cavity is offered in section, and is connected for current by pass ought to be moved axially to flow cartridge with pressure relief vent
When, pressure relief vent is connected with assembly cavity, offers the flow-in hole for being connected with lower through-hole on the barrel of load segment, load segment it is outer
The positioning step being provided on wall below flow-in hole, the upper surface with flow cartridge are provided with the appearance liquid for the connection of upper through hole
Slot；It pressurizes in cylinder one end insertion outer barrel, the other end is for connecting lower drilling string, pressurize cylinder and the /V of outer barrel circumferential direction and axial direction
It is slidably connected, the upper end for the cylinder that pressurizes is connected with flow cartridge, and the top for the cylinder that pressurizes is provided with restriction portion, and the outer wall for the cylinder that pressurizes is located at section
The position at stream section both ends is respectively arranged with by-pass prot and lower by-pass prot；Sleeve is sheathed on the load segment with flow cartridge and the cylinder that pressurizes
Top, the outer wall of sleeve are bonded with the inner wall of outer barrel and are slidingly sealed, and the upper end of sleeve is provided with for axial with limited step
The support base of /V contact, the inner circumferential of the support base are bonded with the load segment and are slidingly sealed, the lower inner wall of the sleeve
It is bonded and is slidingly sealed with the external wall of upper portion of the pressurization cylinder, and for covering or opening by-pass prot, the inner wall of sleeve and assembling
Elastic component installation cavity is formed between the outer wall of section；Elastic component is located in elastic component installation cavity, and elastic reaction is distinguished in branch in both ends
Support the inner face of seat and the upper surface of pressurization cylinder.
Hydraulic type continuous pressure in the utility model send mutual cooperation of the drill tools by more than pure mechanic structure, can be with
Under the drilling fluid of constant flow rate lower drilling string is promoted to continuous cycles to send brill, preferably solve the brill in horizontal segment drilling
Column bracket presses problem, effectively extends the drilling length of horizontal section wellbore, and simple in structure, few easy workout part, reliability is high, uses the longevity
Life length, adapts to underground complex working condition.
Description of the drawings
It 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 only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the original operating state that a kind of hydraulic type continuous pressure that the utility model embodiment provides send drill tools
Structure diagram；
Fig. 2 is the second working condition that a kind of hydraulic type continuous pressure that the utility model embodiment provides send drill tools
Structure diagram；
Fig. 3 is the 3rd working condition that a kind of hydraulic type continuous pressure that the utility model embodiment provides send drill tools
Structure diagram；
Fig. 4 is the 4th working condition that a kind of hydraulic type continuous pressure that the utility model embodiment provides send drill tools
Structure diagram；
Fig. 5 is the Section A-A schematic diagram in Fig. 2.
Wherein, 1 be top connection, 2 be outer barrel, 21 be pipe centered on pressure relief vent, 3,31 be upper through hole, 32 be lower through-hole,
33 be hold liquid bath, 4 be with flow cartridge, 41 be discharge orifice, 42 be flow-in hole, 43 be assembly cavity, 5 be sleeve, 6 be elastic component, 7 for plus
Pressure cylinder, 71 be upper by-pass prot, 72 be restriction portion, 73 be lower by-pass prot, 8 be stop pin, 9 be drop-preventing cover.
Specific embodiment
There is provided a kind of hydraulic type continuous pressures to send drill tools for the core of the utility model, can be provided to drill bit continuous
Send brill bit pressure, effectively eliminate drill string backing pressure, extend the drilling length of horizontal section wellbore.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, 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 embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
It should be noted that describe for convenience, " on ", " under " noun of locality in text is using the attached drawing in the application to join
According to the restriction to this programme protection domain and operating configurations being should not be construed as, when the hydraulic type continuous pressure in attached drawing send driller
It when having horizontal positioned, describes for convenience, " on ", " under " noun of locality is correspondingly replaced with into the "left", "right" noun of locality.
- Fig. 4 is please referred to Fig.1, the utility model embodiment provides a kind of hydraulic type continuous pressure instrument, including top connection
1st, central tube 3, outer barrel 2, with flow cartridge 4, pressurization cylinder 7, sleeve 5 and elastic component 6；
Wherein, top connection 1 can be specifically connected through a screw thread, i.e. the upper end of top connection 1 is set for being connected with upper drilling string
There is male thread, upper drilling string is provided with box thread；Alternatively, the upper end of top connection 1 is provided with male thread, upper drilling string is provided with mother
Screw thread；Top connection 1 is provided with endoporus；
Central tube 3 is connected to the endoporus lower part of top connection 1, and through hole 31 and lower through-hole are offered on the tube wall of central tube 3
32, upper through hole 31 is located at the middle part or lower part of central tube 3 close to the lower face of top connection 1, lower through-hole 32；
Outer barrel 2 is connected to the periphery lower part of top connection 1, and pressure relief vent 21, central tube 3 are offered on the barrel of outer barrel 2
Inside outer barrel 2, and annular chamber is formed between outer barrel 2 and central tube 3；
It is moved axially with flow cartridge 4 in the annular chamber being arranged between central tube 3 and outer barrel 2, the inner wall with flow cartridge 4 is in
The outer wall fitting of heart pipe 3 is slidingly sealed, and the seal section on top and the load segment of lower part, seal section and load segment are included with flow cartridge 4
It is structure as a whole, the outer diameter of seal section is more than the outer diameter of load segment, and the position that seal section connects with load segment forms step surface, close
The outer wall of envelope section is bonded with the inner wall of outer barrel 2 to be slidingly sealed, i.e., is moved axially with flow cartridge 4 with respect to central tube 3 and outer barrel 2,
Assembly cavity 44 is formed between the inner wall of load segment and outer barrel 2, the current by pass 41 of connection assembly cavity 44 is offered on seal section,
Current by pass 41 is additionally operable to when moving axially to current by pass 41 with flow cartridge 4 and being connected with pressure relief vent 21, pressure relief vent 21 and assembling
Chamber 44 connects, and the flow-in hole 42 connected with lower through-hole 32 is offered on the barrel of load segment, is set on the outer wall of load segment
There is the positioning step positioned at 42 lower section of flow-in hole, the upper surface with flow cartridge 4 is provided with the appearance liquid bath 43 for the connection of upper through hole 31；
It pressurizes in one end insertion outer barrel 2 of cylinder 7, the other end is for connecting lower drilling string, pressurization cylinder 7 and outer barrel 2 weeks
It to /V and is in axial sliding connection, the upper end of pressurization cylinder 7 is connected with flow cartridge 4, and the top in the endoporus of cylinder 7 that pressurizes is provided with section
Section 72 is flowed, the aperture of restriction portion 72 is less than the aperture of other positions, and the outer wall of pressurization cylinder 7 is located at the position point at 72 both ends of restriction portion
The upper by-pass prot 71 of the endoporus of connection pressurization cylinder 7 and lower by-pass prot 73 are not provided with；
Sleeve 5 is sheathed on the top of load segment and pressurization cylinder 7 with flow cartridge 4, the outer wall of sleeve 5 and the inner wall of outer barrel 2
Fitting is slidingly sealed, and the upper end of sleeve 5 is provided with the support base for being contacted with the limited step axial limiting with flow cartridge 4, branch
The inner circumferential of support seat be bonded with load segment and is slidingly sealed, and it is close that the lower inner wall of sleeve 5 and the external wall of upper portion of pressurization cylinder 7 are bonded slip
Envelope, and for covering or opening by-pass prot 71, elastic component installation cavity is formed between the inner wall of sleeve 5 and the outer wall of load segment；
Elastic component 6 is located in elastic component installation cavity, and both ends difference elastic reaction is in the inner face of support base and pressurization cylinder 7
Upper surface.
The hydraulic type continuous pressure send the operation principle of drill tools and the course of work as follows：Send hydraulic type continuous pressure to brill
Instrument lower going-into-well bottom, top connection 1 are connected with upper drilling string, and pressurization cylinder 7 is connected with lower drilling string；When hydraulic type continuous pressure send brill
When instrument is in original state, as shown in Figure 1, the upper surface with flow cartridge 4 is contacted with the lower face of top connection 1, the appearance with flow cartridge 4
Liquid bath 43 is aligned with the upper through hole 31 of central tube 3, and the flow-in hole 42 with flow cartridge 4 is aligned with the lower through-hole 32 of central tube 3, outer barrel
2 pressure relief vent 21 is blocked by the seal section with flow cartridge 4, at this point, turn on pump circulating fluid, lower through-hole of the drilling fluid through central tube 3
In the assembly cavity 44 formed between 32 and the entrance outer barrel 2 of flow-in hole 42 with flow cartridge 4 and the load segment with flow cartridge 4, drilling fluid
Pressure promotes 5 compression elastic piece of sleeve 6 is axial to move down, and hydraulic type continuous pressure send drill tools to enter the second working condition position,
As shown in Figure 2；At this point, the outlet of the axial upper by-pass prot 71 for moving down closing pressurization cylinder 7 of sleeve 5；Drilling fluid all flows through at this time
The restriction portion 72 of pressurization cylinder 7, choke pressure increase, drilling fluid enter by the upper through hole 31 of central tube 3 and hold in liquid bath 43, drilling well
Action of hydraulic force is acting on 7 upper end of pressurization cylinder with 4 upper surface of flow cartridge and by inner cavity, provides huge axial thrust promotion and matches somebody with somebody
Flow cartridge 4 and pressurization cylinder 7 is axial together moves down, sleeve 5 and the relative position with flow cartridge 4 and pressurization cylinder 7 are constant, and hydraulic type adds at this time
Force feed drill tools enter the 3rd working condition, as shown in Figure 3；After axially certain distance is moved down with flow cartridge 4 and pressurization cylinder 7,
Current by pass 41 with flow cartridge 4 is connected with the pressure relief vent 21 of outer barrel 2, and connects assembly cavity 44, the drilling fluid in assembly cavity 44
Pressure is discharged by pressure relief vent 21, and sleeve 5 axially moves up under the action of elastic component 6, is moved to the upper end of the support base of sleeve 5
Face is contacted with the limited step /V of flow cartridge 4, that is, returns to original position, the upper by-pass prot 71 of the not re-closed pressurization cylinder 7 of sleeve 5, this
When hydraulic type continuous pressure send drill tools into the 4th working condition, as shown in Figure 4；Upper drilling string is held under the effect of top bit pressure
Continuous axial direction moves down, and promotes top connection 1, outer barrel 2 and central tube 3 opposite and is axially moved down with flow cartridge 4, sleeve 5 and pressurization cylinder 7, directly
It is contacted to the lower face for moving to top connection 1 with the upper surface with flow cartridge 4, returns to hydraulic type continuous pressure and send the initial of drill tools
Working condition.Fluid pressure type continuous pressure send drill tools to complete a period of motion and completes at this time.
The hydraulic type continuous pressure is sent under drill tools to behind downhole designs position, can under constant mud flow rate continuous work
Make, provided for lower drilling string, drill bit and continuously send brill bit pressure, drill string is helped to be sent into, bit operation efficiency is effectively increased, solves
Drill string backing pressure problem in horizontal segment drilling effectively extends horizontal section wellbore drilling length.And the hydraulic type continuous pressure send brill
Instrument is pure mechanic structure, simple in structure, few easy workout part, and reliability is high, and service life is long, adapts to underground complex working condition.
As an optimization, in the present embodiment, the cylinder 7 that pressurizes carries out circumferential /V with outer barrel 2 by keyway arrangements, prevents from adding
Pressure cylinder 7 is rotated relative to outer barrel 2.
Specifically, a kind of specific keyway arrangements are present embodiments provided, including the first keyway, the second keyway and anti-rotation
Pin 8；Wherein, the first keyway is axially set on the inner wall of outer barrel 2；Second keyway is axially set on the outer wall of pressurization cylinder 7,
And first keyway and the second keyway be spliced into pin hole；Stop pin 8 is embedded in the first keyway and the second keyway, is completed to outer barrel
2 and pressurization cylinder 7 circumferential /V.
Further, as shown in figure 5, in the present embodiment, the quantity of the first keyway and the second keyway is equal and circumferentially
Direction is uniformly distributed, and the first keyway of each pair and the second keyway correspond to one stop pin 8 of insertion, and the quantity of stop pin 8 can be 1
~10, this gives the preferred embodiments of 8.
Further, such as Fig. 1-Fig. 4, in the present embodiment, hydraulic type continuous pressure send drill tools further include be sheathed on plus
The drop-preventing cover 9 being connected on the outer wall of pressure cylinder 7 and with the lower port of outer barrel 2, for preventing stop pin 8 from the first keyway and second
It is dropped out in keyway.
Certainly, keyway arrangements can also be the keyway being arranged on the inner wall of outer barrel 2, be arranged on the outer wall of pressurization cylinder 7
On positioning key, positioning key is structure as a whole with pressurization cylinder 7, and positioning key and keyway location fit can equally realize circumferential limit
Position.In this way, there is no need to set drop-preventing cover 9.
As an optimization, in the present embodiment, drop-preventing cover 9 is threadedly coupled with the lower end of outer barrel 2, i.e. the lower end of outer barrel 2
External screw thread is provided with, the upper end of drop-preventing cover 9 is provided with internal thread, and drop-preventing cover 9 is tightened in the lower end of outer barrel 2, facilitates installation
And dismounting.Certainly, drop-preventing cover 9 can be with hot pressing on outer barrel 2.
In the present embodiment, current by pass 41 is the discharge orifice being arranged in seal section, and the import of discharge orifice is located at sealing
On the step surface that section joins with load segment, the outlet of discharge orifice is in the outside wall surface of seal section.Preferably, discharge orifice edge sealing
The axial setting of section, facilitates processing, as long as connection assembly cavity 44 and pressure relief vent 21.The quantity of discharge orifice is one or more
A, this implementation is preferably two, is arranged symmetrically in in flow cartridge 4, accordingly, the quantity of pressure relief vent 21 and position and discharge orifice one
One corresponds to.Certainly, discharge orifice can not also be axially disposed, as long as pressure relief vent 21 and assembly cavity 44 can be connected.
In the present embodiment, current by pass 41 can also be the dredging flow groove being arranged in the outside wall surface of seal section, dredging flow groove
Current by pass is formed between the internal face of outer barrel 2.Dredging flow groove can have any shape, as long as outlet and the aerial drainage of dredging flow groove
Remaining position of slot is not in same axial direction, in this way, only when the outlet of dredging flow groove, which is moved to, to be aligned with pressure relief vent 21,
Dredging flow groove connects assembly cavity 44 and pressure relief vent 21.
In the present embodiment, the quantity of the upper through hole 31 on central tube 3 and lower through-hole 32 can be one or more, preferably
It for two, and is symmetrical arranged, makes drilling fluid flowing uniformly, pressure is uniform.
In the present embodiment, elastic component 6 is compression spring or elastic rubber, as long as the elastic reset of sleeve 5 can be realized
.
In the present embodiment, the lower end outer wall of top connection 1 is connected with the upper end outer wall thread of outer barrel 2, central tube 3 it is upper
End outer wall is threadedly coupled with the lower end inner wall of top connection 1, easy disassembly, it is, of course, also possible to using interference fit etc., as long as realizing
Sealed connection.
The lower end of pressurization cylinder 7 is provided with internal thread, is connected with the external screw thread of lower drilling string, certainly, pressurizes under cylinder 7
End can also set external screw thread, be connected with the screw-internal thread fit of lower drilling string.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of hydraulic type continuous pressure send drill tools, which is characterized in that including：
For the top connection (1) being connected with upper drilling string；
Central tube (3) is connected to the endoporus lower part of the top connection (1), through hole is offered on the tube wall of the central tube (3)
(31) and lower through-hole (32), the upper through hole (31) is close to the lower face of the top connection (1)；
Outer barrel (2) is connected to the periphery lower part of the top connection (1), pressure relief vent is offered on the barrel of the outer barrel (2)
(21)；
With flow cartridge (4), movement is arranged between the central tube (3) and the outer barrel (2), the inner wall with flow cartridge (4)
It is bonded and is slidingly sealed with the outer wall of the central tube (3), the assembling of the seal section and lower part that top is included with flow cartridge (4)
Section, the outer wall of the seal section are bonded with the inner wall of the outer barrel (2) and are slidingly sealed, the load segment and the outer barrel
(2) there are assembly cavity (44) between inner wall, the current by pass for connecting the assembly cavity (44) is offered on the seal section
(41), when and being connected for moving axially to the current by pass (41) with flow cartridge (4) described in the pressure relief vent (21), institute
Pressure relief vent (21) is stated to connect with the assembly cavity (44), offered on the barrel of the load segment for the lower through-hole (32)
The flow-in hole (42) of connection, the positioning step being provided on the outer wall of the load segment below the flow-in hole (42), institute
It states the upper surface with flow cartridge (4) and is provided with the appearance liquid bath (43) connected for the upper through hole (31)；
Pressurize cylinder (7), and one end is inserted into the outer barrel (2), the other end for connecting lower drilling string, the pressurization cylinder (7) with
It the circumferential /V of the outer barrel (2) and is in axial sliding connection, the upper end of the pressurization cylinder (7) is connected with described with flow cartridge (4), institute
The top for stating pressurization cylinder (7) is provided with restriction portion (72), and the outer wall of the pressurization cylinder (7) is located at the restriction portion (72) both ends
Position is respectively arranged with by-pass prot (71) and lower by-pass prot (73)；
Sleeve (5), is sheathed on the top of the load segment with flow cartridge (4) and the pressurization cylinder (7), the sleeve (5) it is outer
Wall is bonded with the inner wall of the outer barrel (2) and is slidingly sealed, the upper end of the sleeve (5) be provided with for the limited step
The support base of axial limiting contact, forms elastic component installation cavity between the inner wall of the sleeve (5) and the outer wall of the load segment；
Elastic component (6), in the elastic component installation cavity, and both ends difference elastic reaction in the support base inner face and
The upper surface of the pressurization cylinder (7).
2. hydraulic type continuous pressure according to claim 1 send drill tools, which is characterized in that the pressurization cylinder (7) and institute
It states outer barrel (2) and carries out circumferential /V by keyway arrangements.
3. hydraulic type continuous pressure according to claim 2 send drill tools, which is characterized in that the keyway arrangements include：
The first keyway being arranged on the inner wall of the outer barrel (2)；
The second keyway with first keyway cooperation being arranged on the outer wall of the pressurization cylinder (7)；
The stop pin (8) being embedded in first keyway and second keyway.
4. the hydraulic type continuous pressure according to Claims 2 or 3 send drill tools, which is characterized in that further includes and is sheathed on institute
State the drop-preventing cover (9) being connected on the outer wall of pressurization cylinder (7) and with the lower port of the outer barrel (2).
5. hydraulic type continuous pressure according to claim 4 send drill tools, which is characterized in that the drop-preventing cover (9) and institute
The lower end for stating outer barrel (2) is threadedly coupled.
6. send drill tools according to claim 1-3 any one of them hydraulic type continuous pressures, which is characterized in that the aerial drainage leads to
Road (41) is the discharge orifice being arranged in the seal section, and the import of the discharge orifice is located at the seal section and the load segment
On the step surface of handing-over, the outlet of the discharge orifice is in the outside wall surface of the seal section.
7. hydraulic type continuous pressure according to claim 6 send drill tools, which is characterized in that the discharge orifice is along described close
Seal the axial setting of section.
8. send drill tools according to claim 1-3 any one of them hydraulic type continuous pressures, which is characterized in that the aerial drainage leads to
Road (41) is the internal face of the dredging flow groove being arranged in the outside wall surface of the seal section, the dredging flow groove and the outer barrel (2)
Between form the current by pass (41).
9. send drill tools according to claim 1-3 any one of them hydraulic type continuous pressures, which is characterized in that the elastic component
(6) it is compression spring or elastic rubber.
10. send drill tools according to claim 1-3 any one of them hydraulic type continuous pressures, which is characterized in that connect on described
The lower end outer wall of head (1) is connected with the upper end outer wall thread of the outer barrel (2), the upper end outer wall of the central tube (3) and institute
The lower end inner wall for stating top connection (1) is threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029685.8U CN207453900U (en) | 2017-08-16 | 2017-08-16 | A kind of hydraulic type continuous pressure send drill tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029685.8U CN207453900U (en) | 2017-08-16 | 2017-08-16 | A kind of hydraulic type continuous pressure send drill tools |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403888A (en) * | 2017-08-16 | 2019-03-01 | 中石化石油工程技术服务有限公司 | A kind of hydraulic type continuous pressure send drill tools |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403888A (en) * | 2017-08-16 | 2019-03-01 | 中石化石油工程技术服务有限公司 | A kind of hydraulic type continuous pressure send drill tools |
| CN109403888B (en) * | 2017-08-16 | 2024-03-15 | 中石化石油工程技术服务有限公司 | Hydraulic continuous pressurizing drill feeding tool |
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Effective date of registration: 20180730 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: THE FIRST WELL DRILLING COMPANY OF SINOPEC ZHONGYUAN OIL ENGINEERING CO., LTD. Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100028 Chaoyang District, Beijing Hui Xin Street 6, Twelfth level. Co-patentee before: THE FIRST WELL DRILLING COMPANY OF SINOPEC ZHONGYUAN OIL ENGINEERING CO., LTD. Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |
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