CN105114016B - String cleaner - Google Patents
String cleaner Download PDFInfo
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- CN105114016B CN105114016B CN201510511029.0A CN201510511029A CN105114016B CN 105114016 B CN105114016 B CN 105114016B CN 201510511029 A CN201510511029 A CN 201510511029A CN 105114016 B CN105114016 B CN 105114016B
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- mandrel
- tubing string
- cleaning
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Abstract
The string cleaner that the application provides includes：The body with first end and the second end of lengthwise extension, first end can be connected with tubing string, and the second end can be connected with mud motor；The first chamber between first end and the second end being opened in body, first chamber can connect with tubing string, and the side wall of body offers the first through hole connected with first chamber.The application connects the first through hole of first chamber by being opened up in the side wall of body, first chamber can connect with tubing string, so as to link up tubing string and annular space, form the flushing channel for being available for cleaning fluid to circulate, the flushing channel can change the flow direction of cleaning fluid, realize that cleaning fluid, underground cleaning tubing string, the purpose for completing ground return face on the cleaning fluid of cleaning are squeezed into ground, overcome the shortcomings of prior art ground in face of tubing string carry out cleaning waste time and energy, complex procedures, influence construction progress, greatly improve cleaning efficiency.
Description
Technical field
The application belongs to petroleum gas drilling and repairing well technical field, more particularly to a kind of string cleaner.
Background technology
During drilling and repairing well, tubing string can provide fluid power as drilling fluid transfer passage for mud motor.
At present, in engineering using it is more be helicoid hydraulic motor, the stator of helicoid hydraulic motor uses rubber mostly.But rubber
Bearing capacity is weaker, and drilling fluid is easily missed, and causes fluid power to decline, drilling tool power loss；It is easy to aging and the heat resistance of rubber is poor
And tear；In addition, under the collective effect of the gentle oil well hydrocarbon of well, corrosion swelling may occur for rubber, and this molten
It is swollen it is also possible to can be uneven because of the anisotropy of elastomeric material, stator profile is changed.Therefore, it is high in some requirements
Fluid power, well temperature are higher or in the case that hole condition complicated condition such as underground has corrosive gas or liquid, and generally use has
The power drilling tool of the of a relatively high metal stator of intensity.
Metal stator can overcome the above-mentioned deficiency of elastomer stator.Compared with elastomeric material, metal can be of a relatively high
At a temperature of keep higher strong hardness, therefore the shape of metal stator will not be easily because of external condition such as temperature, pressure
Change and change, metal stator can keep better assembly relation in relatively long construction period with rotor.Also it is exactly
In this way, the power drilling tool with metal stator is also higher to the purity requirements of drilling fluid.Otherwise, if containing miscellaneous in drilling fluid
Matter, gently then impurity may be cut to pieces and hinder metal stator and rotor surface, and then may produce stress concentration cut injury to pieces, influence to use the longevity
Life；The possible clamping stagnation of heavy then impurity makes power drilling tool by brake hard, generation construction accident between metal stator and rotor.It is miscellaneous
Matter is mainly that drilling fluid and the product of metal tubing string generation chemical reaction generation accumulate formation for a long time.Therefore, using
Power drilling tool with metal stator or the higher mud motor of other purity requirements to drilling fluid carry out brill and repaiied
Before well operations, generally require and tubing string is cleaned, with the impurity being retained in before removing during subjob in tubing string.
In the prior art, generally tubing string is above carried to ground and is cleaned, then by the sleeve pipe of tubing string tripping in Oil/gas Well；It is right
In longer tubing string, also need to carry out segmented cleaning after tubing string segmentation is split under normal circumstances；Not only waste time and energy, Er Qiegong
Sequence is complicated, influences construction speed.In addition, ground environment is poor, tubing string cleaning is completed, tubing string and mud motor are entered into luggage
During matching somebody with somebody, it would still be possible to there is other dirts such as soil or harder stone to mix into tubing string, after causing tubing string to clean
Pollute again.
The content of the invention
The purpose of the application embodiment is to provide one kind and quickly and easily tubing string fully can be cleaned in underground
Device.
In order to solve the above technical problems, the application provides a kind of string cleaner, it includes：The body of lengthwise extension,
The body have mutually back to first end and the second end, the first end can be connected with tubing string, second end energy and underground
Power drilling tool connects；The first chamber being opened in the body, the first chamber are located at the first end and described second
Between end, the first chamber can connect with the tubing string, and the side wall of the body offers what is connected with the first chamber
First through hole.
In one embodiment, mandrel is provided with the first chamber, second chamber is offered in the mandrel, it is described
The side wall of mandrel offers the second through hole connected with the second chamber, and the mandrel opens up close to the end of the first end
The opening of the first chamber and the second chamber can be connected by having；The mandrel and the first chamber have and can make described the
The first working condition that one through hole is connected with second through hole, and the first through hole can be made to stagger with second through hole
Second working condition of connection.
In one embodiment, the body has the 3rd chamber connected with the first chamber, the 3rd chamber
Between the first chamber and second end；The side wall of the body offers the 3rd with the 3rd chamber
Through hole.
In one embodiment, described body sidewall interior edge longitudinally offers passage, the passage and the described 3rd
Chamber, the 3rd chamber can connect with the power drilling tool；The mandrel sidewall, which offers, can turn on first chamber
Room and the fourth hole of the passage, the fourth hole is between second through hole and the opening.
In one embodiment, the mandrel is fixedly installed on first chamber by the pin with predetermined shearing strength
It is indoor；Along longitudinally, the size of the first chamber is more than the size of the mandrel, second through hole and the four-way
The distance between hole is more than the size of the mandrel.
In one embodiment, the area of section of the 3rd chamber away from second end is more than close to second end
Area of section.
In one embodiment, check valve is provided with the third through-hole, the check valve can limit the 3rd chamber
Liquid outflow in room.
In one embodiment, the check valve includes：The plug that can be jammed in the third through-hole, the plug are opened
Provided with the fifth hole connected with the third through-hole；It can set in the valve ball on the fifth hole；Spring, the spring
The solid valve ball in one end top, the other end and the body are affixed.
Technical scheme more than, the beneficial effects of the present invention are：
The first through hole of the first chamber is connected by being opened up in the side wall of the body, first chamber can be with institute
Tubing string connection is stated, so as to link up the tubing string and the annular space, forms the flushing channel for being available for cleaning fluid to circulate, the cleaning is led to
Road can change the flow direction of cleaning fluid, realize that ground is squeezed into cleaning fluid, underground cleaning tubing string, completed on the cleaning fluid of cleaning
The purpose in ground return face, overcoming prior art to carry out cleaning in face of tubing string on ground wastes time and energy, complex procedures, influences construction progress
Deficiency, greatly improve cleaning efficiency.
In addition, the string cleaner of present embodiment can realize the underground cleaning of tubing string, therefore, even if being filled on ground
Mix in timing tubing string and enter other dirts and cause to pollute again, pollutant again can also be cleaned, ensure cleaning
It is abundant and effective.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the positive structure schematic of the string cleaner of embodiment of the present invention；
Fig. 2 is in structural representation during the first working condition for the string cleaner shown in Fig. 1；
Fig. 3 is the side structure schematic diagram of the string cleaner of embodiment of the present invention；
Fig. 4 is in structural representation during the second working condition for the string cleaner shown in Fig. 3；
Fig. 5 is the structural representation of the check valve of embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In the description of the present application, it is to be understood that indicating position or the position such as term " on ", " under ", " interior ", " outer "
Relation is based on the orientation or position shown in Figure of description, is for only for ease of description the application and simplifies description, rather than
Indicate or imply that signified device or part necessarily have specific orientation or position, or structure is carried out with specific orientation or position
Make or operate, therefore it is not intended that limitation to the application protection domain.
Refer to Fig. 1 and Fig. 2.The string cleaner 100 that the application provides includes：The body 1 of lengthwise extension, described
Body 1 have mutually back to the end 20 of first end 10 and second, the first end 10 can be connected with tubing string 30, and the tubing string 30 can be
Drilling fluid provides transfer passage, and second end 20 can be connected with mud motor 40, and the mud motor 40 can be with
Worked under the hydraulic drive of drilling fluid.The first chamber 11 being opened in the body 1, the first chamber 11 is positioned at described
Between first end 10 and second end 20, the first chamber 11 can be connected with the tubing string 30, and the side wall of the body 1 is opened
Provided with the first through hole 21 connected with the first chamber 11.
In present embodiment, body 1 can be cylindricality along its longitudinally, and the cross section of the cylindricality can be polygon,
Such as can be quadrangle or hexagon, now the global shape of body 1 is quadrangular or six prisms；May be used also the cross section of the cylindricality
With and it is preferably circular, now the global shape of body 1 is cylindric.Body 1 can be according to realistic well condition demand, from suitable material
Material.For example, in order to meet underground hot conditions, preparing the material of body 1 needs to meet certain intensity and high temperature creep resistance
Energy；When in tripping in Oil/gas Well, body 1 may be scratched or hit with the sleeve pipe of Oil/gas Well, and this is not damaged in order that scratching or hitting
The surface of body 1, the material should also meet certain hardness requirement；There may be punching when brill repaiies operation for mud motor 40
Hit, the material should meet the requirement of certain toughness and resistance to shock loads；Underground there may be corrosive liquid or gas, should
Material should meet certain resistance to corrosion.Because Steel material plasticity is preferable, easy processing shaping；Cost is low, is easy to get；One can be passed through
Fixed Technology for Heating Processing for example can be carburizing, modulation or Quenching Treatment improve its strong hardness, Properties of High Temperature Creep, toughness and
Resistance to shock loads performance, and these techniques are simple to operation.Therefore, Steel material can substantially meet above-mentioned needs.Furthermore, it is possible to
The outer surface coating anti-corrosion coating of steel body is to meet requirement against corrosion.
The end 20 of first end 10 and second of string cleaner 100 can be provided with screw thread, to realize string cleaner
100 is detachably connected with tubing string 30 and mud motor 40.For the ease of connection, the end 20 of first end 10 and second is being installed
The shape at position can be adapted with tubing string 30 and mud motor 40, such as can open up predetermined length in first end 10
Groove 101, being set on the inwall of groove 101 can be with external screw thread mutually screws on tubing string 30 internal thread；Can be by the second end
20 be arranged to it is substantially round table-like, specifically, as shown in figure 1, the section at the second round table-like end 20 gradually becomes from top to bottom
It is small, in the outer spiral shell that setting up in week with the second round table-like end 20 can mutually screw with the internal thread of mud motor 40
Line.Certainly, what is set on tubing string 30 and mud motor 40 is used for the phase of string cleaner 100 with the application embodiment
The screw thread of connection is with foregoing description on the contrary, the screw thread on the end 20 of first end 10 and second can also adaptations.
Tubing string 30 can choose suitable existing construction according to actual requirement of engineering, and mud motor 40 include but unlimited
In the higher mud motor of the power drilling tool with metal stator or other purity requirements to drilling fluid.
First chamber 11 is mainly used in connecting with tubing string 30, and the first through hole 21 by communicating therewith, will be by tubing string 30
Conveying come liquid guide flow to body 1 outside, or by by the liquid guide flow outside body 1 into tubing string 30.First chamber 11 can
To be a closed chamber between the end 20 of first end 10 and second, linked up by the first through hole 21 communicated therewith in it
Portion's cavity space and exterior space, can be by setting a through hole to connect first chamber 11 and tubing string 30 in first end 10.But
Preferably by the apical grafting first end 10 of first chamber 11, so it is easy to shaping for first chamber 11, such as drilling can be passed through
Drilling, which is carried out, on the end face of the solid first end 10 in the drill bit top of instrument forms first chamber 11.The cross section of first chamber 11 can be
Polygon, such as can be quadrangle or hexagon；, but it is preferred that it is identical with the cross section of runner 31 of tubing string 30, such as work as stream
The cross section in road 31 is circle, and the cross section of first chamber 11 is the same circle of radial dimension；Along the lengthwise side of body 1
Can be step type to, first chamber 11, can and preferably straight hole shape.As above, cross section is circular and being straight pass the
One chamber 11 is easy to time processing to shape；Position of the first chamber 11 in body 1 is preferably capable aligning with runner 31.Such as
This, after first end 10 is connected with tubing string 30, the runner 31 of tubing string 30 can be aligned simply with first chamber 11 to be connected, and can be with
Obtain maximum area of passage.
First through hole 21 connects through the side wall of body 1 with first chamber 11.The section of first through hole 21 can be polygon
Shape, such as can be quadrangle or hexagon, it is preferably circular.And in order to increase liquid communication area, body 1 can be run through
Side wall forms multiple first through hole 21, also, the plurality of first through hole 21 can be uniformly distributed setting in a manner of annular array,
It is more uniformly and steady when can so make liquid excessively stream.
When carrying out washing and cleaning operation using the string cleaner 100 of present embodiment, tubing string 30, tubing string cleaning are sequentially connected
Device 100 and mud motor 40, and three is lowered into the sleeve pipe 6 of Oil/gas Well.String cleaner 100, tubing string 30
When can be to be for example identical circle with the cross section of mud motor 40, the outside dimension of three be preferably identical, so may be used
To form straight annular space 7 between three and sleeve pipe 6, annular space 7 connects with first through hole 21.Certainly, string cleaner
100th, the cross section and radial dimension of tubing string 30 and mud motor 40 are not limited to identical situation, can be according to Practical Project
Need to choose three's shape of cross section and radial dimension, but the radial dimension of three should be less than the internal diameter size of sleeve pipe 6, so as to
Annular space 7 can be formed.Tubing string 30, first chamber 11, first through hole 21 and the annular space 7 being sequentially communicated, which are formed, is available for what cleaning fluid circulated
Flushing channel, the flushing channel can change the flow direction of cleaning fluid, realize ground squeeze into cleaning fluid, underground cleaning tubing string,
Complete the purpose in ground return face on the cleaning fluid of cleaning.Specifically, refer to Fig. 2.For example, cleaning fluid can be entered by annular space 7,
Enter tubing string 30 through first through hole 21, first chamber 11 successively and tubing string 30 is cleaned, the impurity under cleaning fluid and cleaning
Can be finally by returning discharge on tubing string 30.Cleaning fluid can also be entered by tubing string 30, cleaning fluid after being cleaned to tubing string 3 and
Impurity under cleaning enters annular space 7 through first chamber 11, first through hole 21 successively, and can be finally by returning discharge on annular space 7.When
So, two kinds of cleaning ways of above-mentioned offer can also be alternately.
The string cleaner 100 of present embodiment in the side wall of body 1 by opening up the of connection first chamber 11
One through hole 21, first chamber 11 can connect with tubing string 30, and so as to link up tubing string 30 and annular space 7, formation is available for wash liquid stream
Logical flushing channel, the flushing channel can change the flow direction of cleaning fluid, realize that cleaning fluid, underground cleaning pipe are squeezed into ground
Post, complete cleaning cleaning fluid on ground return face purpose, overcome prior art ground in face of tubing string carry out cleaning waste time and energy, work
Sequence is complicated, influences the deficiency of construction progress, greatly improves cleaning efficiency.
In addition, the string cleaner 100 of present embodiment can realize the underground cleaning of tubing string, therefore, even if on ground
Mix when face is assembled in tubing string and enter other dirts and cause to pollute again, pollutant again can also be cleaned, ensured
That cleans is abundant and effective.
In one embodiment, mandrel 2 is provided with the first chamber 11, second chamber is offered in the mandrel 2
12, the side wall of the mandrel 2 offers the second through hole 22 connected with the second chamber 12, and the mandrel 2 is close to described
The end of one end 10 offers the opening 3 that can connect the first chamber 11 and the second chamber 12.The mandrel 2 with it is described
First chamber 11 has and can make the first working condition that the first through hole 21 is connected with second through hole 22, and can make institute
First through hole 21 is stated with second through hole 22 to stagger the second working condition connected.
In present embodiment, the shape of mandrel 2 is adapted with the cavity shape of first chamber 11, for example, working as first chamber
11 be the straight pass that section is polygon or circle, and mandrel 2 is accordingly polygon prism or cylindric.Mandrel 2 can be according to real well
Condition demand, from suitable material.The material selection requirement of mandrel 2 can refer to the above-mentioned description to body 1, no longer superfluous herein
State.Furthermore, it is possible to sealing ring is set between the outer wall of mandrel 2 and the inwall of second chamber 12, to prevent fluid seepage.
Specifically, for example can be by opening up conduit on the outer wall of mandrel 2, the mode of setting O-ring seals is carried out close in conduit
Envelope.
Second chamber 12 can be a closed chamber, and it is empty to link up its internal chamber by the second through hole 22 communicated therewith
Between and exterior space, and first chamber 11 is linked up by opening 3, the liquid guide flow in first chamber 11 is empty to its internal chamber
Between, or by the liquid guide flow in its internal chamber space into first chamber 11.The cross section of second chamber 12 can be polygon,
Such as can be quadrangle or hexagon；, but it is preferred that it is identical with the cross section of runner 31 of tubing string 30, such as when runner 31
Cross section is circle, and the cross section of second chamber 12 is also circle.Along the longitudinally of body 1, second chamber 12 can be ladder
Type, can and preferably straight hole shape, as above, the second chamber 12 of straight pass is easy to time processing to shape.
Second through hole 22 connects through the side wall of mandrel 2 with second chamber 12.The section of second through hole 22 can be polygon
Shape, such as can be quadrangle or hexagon, it is preferably circular.And in order to increase liquid communication area, mandrel 2 can be run through
Side wall is correspondingly formed and multiple second through holes 22 of the quantity identical of first through hole 21；Also, the plurality of second through hole 22 is with
The mode of the identical annular array of one through hole 21 is uniformly distributed setting, therefore, when mandrel 2 and first chamber 11 are in the first work
During state, the plurality of second through hole 22 multiple with quantity identical first through hole 21 can be corresponded and connected respectively, and can be with
It is more uniformly and steady when making liquid excessively stream.
Opening 3 can be used for linking up first chamber 11 and second chamber 12, the liquid in two chambers is flowed with intercommunication.
When mandrel 2 is in the first working condition with first chamber 11, opening 3 can be less than the bottom land for the groove 101 that first end 10 opens up
Portion；But it is preferably that opening is 3 concordant with the trench bottom of groove 10, in this way, the liquid in tubing string 30 can be directly through opening 3 into the
In two chambers 12, or liquid in second chamber 12 directly can enter in tubing string 30 through opening 3, so as to mitigate mandrel 2
With the seal pressure between first chamber 11.Be open 3 preferably circular, and when second chamber 12 cross section for it is circular when,
The radial dimension of circular opening 3 is preferably equal with the radial dimension of second chamber 12, is so easy to adding for second chamber 12
Work shapes.Such as drilling can be carried out by an end of the solid mandrel 2 in drill bit top of boring bar tool and form second chamber 12, profit
The second chamber 12 formed with this method be that cross section is circular straight hole shape chamber, and the cross section is the of the straight hole shape of circle
The upper end of two chamber 12 can be concordant with the trench bottom of groove 10.
In present embodiment, when mandrel 2 is in the first working condition with first chamber 11, the through hole of first through hole 21 and second
22 are connected.When opening 3 is concordant with the trench bottom for the groove 10 that first end 10 opens up, the annular space 7 that is sequentially communicated, first through hole
21st, the second through hole 22, second chamber 12, opening 3 and tubing string 30 form the flushing channel for being available for cleaning fluid to circulate, the flushing channel
The flow direction of cleaning fluid can be changed, realize that ground squeezes into cleaning fluid, underground cleaning tubing string, completes to return on the cleaning fluid of cleaning
The purpose on ground.Specifically, refer to Fig. 2.For example, cleaning fluid can be entered by annular space 7, successively through first through hole 21, second
Through hole 22, second chamber 12, opening 3 enter tubing strings 30 and simultaneously tubing string 30 are cleaned, and the impurity under cleaning fluid and cleaning can be with
Finally by returning discharge on tubing string 30.Cleaning fluid can also be entered by tubing string 30, after being cleaned to tubing string 3 successively through opening 3,
Second chamber 12, the second through hole 22, first through hole 21 enter annular space 7, and can be finally by returning discharge on annular space 7.Certainly, it is above-mentioned
The two kinds of cleaning ways provided can also be alternately.
When completing the cleaning to tubing string 30, when need to stop tubing string cleaning, or drilling and repairing well operation need to be entered, mandrel 2 can be made
When being in the second working condition with first chamber 11, now first through hole 21 staggers with the second through hole 22 and connected, to make in next step
Industry is prepared.Specifically, as shown in Fig. 2 the mode connected that staggers with the second through hole 22 of first through hole 21 is set to be along lengthwise
Direction, the size more than mandrel 2 that the size of first chamber 11 is set, mandrel 2 can move up and down in first chamber 11,
When mandrel 2 moves down certain distance, you can first through hole 21 is staggered with the second through hole 22 and connect.The application embodiment exists
After completing tubing string cleaning, drilling and repairing well operation can be carried out immediately, will be described in detail hereinafter.
Fig. 2 is referred to, when being more than the size of mandrel 2 along the size of longitudinally first chamber 11, into second chamber
Cleaning fluid meeting center roller 2 in 12 applies the fluid power P to the second end 202, mandrel 2 is acted on by unidirectional force.It is this adjoint clear
The unidirectional force center roller 2 for washing operation whole process causes continued extension to act on, and easily causes the damage of mandrel 2.Therefore, in order to compensate for
The unidirectional force is to reduce the infringement of its center roller 2, in the embodiment of the application, can be opened up in body 1 and first
The 3rd chamber 13 that chamber 11 connects, the 3rd chamber 13 are located between the end 20 of first chamber 11 and second；The side wall of body 1 opens up
There is the third through-hole 23 connected with the 3rd chamber 13.
In present embodiment, the 3rd chamber 13 can connect between first chamber 11.Specifically, as shown in figure 1, first
Have between the chamber 13 of chamber 11 and the 3rd one be used to separating two chambers every platform 33, through every platform 33 open up one be used for connect the
The duct 34 of one chamber 11 and the 3rd chamber 13.Annular space 7, third through-hole 23, the 3rd chamber 13 and first chamber 11 are sequentially communicated,
Hydraulic resistance balance passage is formed, the cleaning fluid in annular space 7 enters in the 3rd chamber 13 through third through-hole 23, and duct 34 can be for the 3rd
Cleaning fluid in chamber 13 enters in first chamber 11, more specifically, the cleaning liquid level of first chamber 11 is entered through duct 34
In the bottom of mandrel 2, the part cleaning fluid can be produced and fluid power P with center roller 22Reverse fluid power P1, so as to fluid power P2
Compensated for, reduce the infringement of the possible center roller 2 of unidirectional force.
Third through-hole 23 connects through the side wall of body 1 with the 3rd chamber 13.The section of third through-hole 23 can be polygon
Shape, such as can be quadrangle or hexagon, can and it is preferably circular.And in order to increase liquid communication area, it can run through
The side wall of body 1 forms multiple third through-holes 23；Also, the plurality of third through-hole 23 can uniformly be divided in a manner of annular array
Cloth is set, more uniformly and steady when can so make liquid excessively stream.
The cleaning to tubing string 30 is completed, it is necessary to be transferred to drilling and repairing well operation.Refer to Fig. 3 and Fig. 4, some embodiment party of the application
What formula was realized in：The side wall interior edge longitudinally of the body 1 offers passage 14, the passage 14 and the 3rd chamber
Room 13 connects, and the 3rd chamber 13 can connect with the power drilling tool 40.The side wall of the mandrel 2 offer can turn on it is described
First chamber 11 and the fourth hole 24 of the passage 14, the fourth hole 24 are located at second through hole 22 and the opening
Between 3.In addition, the mandrel 1 is fixedly installed in the first chamber 11 by the pin 8 with predetermined shearing strength.And
Along longitudinally, the size of the first chamber 11 is more than the size of the mandrel 2, second through hole 22 and the four-way
The distance between hole 24 is more than the size of the mandrel 2.
In present embodiment, passage 14 can parallel to longitudinally be arranged in the side wall of body 1 or it is big
Direction being arranged in the side wall of body 1 for longitudinally is caused, as long as it can connect the 3rd chamber 13, and not through body 1
Side wall connects with the exterior space of body 1.The cross section of passage 14 can be polygon, such as can be quadrangle or six
Side shape, can and it is preferably circular；And along longitudinally, passage 14 can be straight pass or step type.And in order to increase
Big liquid communication area, can set multiple passages 14, also, the plurality of passage 14 can be with annular in the side wall of body 1
The mode of array is uniformly distributed setting, more uniformly and steady when can so make drilling fluid excessively stream.In addition, it is to be understood that
Passage 14 is the inside for the side wall for being opened in body 1, unlike first through hole 21, the second through hole 22 and third through-hole 23,
Side wall of the passage 14 not through body 1.
Fourth hole 24 is used to link up first chamber 11 and passage 14.The section of fourth hole 24 can be polygon, example
Such as can be quadrangle or hexagon, can and it is preferably circular.And in order to increase liquid communication area, it can set and passage
The multiple fourth holes 24 of 14 quantity identicals, also, the plurality of fourth hole 24 is with the side with the identical annular array of passage 14
Formula is uniformly distributed setting, in this way, the plurality of fourth hole 24 can correspond company by passages 14 multiple with quantity identical respectively
It is logical；It is and more uniformly and steady when can make liquid excessively stream.
One end on pin 8 can be provided with screw thread, and the corresponding hole for being available for pin 8 to pass through is opened up in the side wall of body 1,
The aperture in the hole can be suitably larger than the external diameter of pin 8, or the hole can also be provided with and can mutually be screwed with the screw thread on pin 8
Internal thread；Blind hole is opened up corresponding in the side wall of mandrel 2, can be provided with the blind hole can mutually revolve with the screw thread on pin 8
The internal thread of conjunction.In this way, mandrel 2 is fixed in first chamber 11 by pin 8, so that mandrel 2 is in first chamber 11
First working condition.
Along longitudinally, the size of first chamber 11 is more than the size of mandrel 2.Specifically, such as Fig. 2, along the vertical direction, the
The length dimension of one chamber 11 is more than the length dimension of mandrel.Therefore, when in the presence of external force cause there is predetermined shearing resistance
The pin 8 of intensity is cut, and mandrel 2 can move down in first chamber 11.
Along longitudinally, the distance between the second through hole 22 and fourth hole 24 are more than the size of mandrel 2, specifically, such as
Shown in Fig. 2, along the vertical direction, the distance between the second through hole 22 and fourth hole 24 are more than the length dimension of mandrel 2.Four-way
Hole 24 is located between the second through hole 22 and opening 3, specifically, as shown in Fig. 2 fourth hole 24 is located at the upper of the second through hole 22
Side.Therefore, when mandrel 2 and first chamber 11 are in the first working condition, first through hole 21 connects with the second through hole 22, and the 4th
Through hole 24 is then blocked by mandrel 2, and due to being sealed between mandrel 2 and the inwall of first chamber 11, therefore tubing string 30 can be ensured
The cleaning fluid that cleaning fluid can enter in annular space 7, or annular space 7 through the second through hole 22 and first through hole 21 successively can pass through successively
The through hole 22 of first through hole 21 and second enters tubing string 30, to carry out washing and cleaning operation, without making cleaning fluid be flowed through fourth hole 24
Go out.
In present embodiment, the cleaning of tubing string is completed, when need to carry out drilling and repairing well operation, the tripping in pitching of tubing string 30 can be passed through
9, pitching 9 is set in the opening 3 of mandrel 2, opening 3 with the contact surface that pitching 9 is located can be arranged to the phase of pitching 9 agree with it is interior
Concave arc shape, function is similar to ball seat.In this way, pitching 9 is set in opening 3, so as to the lower space to tubing string 30 such as
One chamber 11 and second chamber 12 form seal pack.Drilling fluid is suppressed into tubing string 30, the fluid power of drilling fluid is made by pitching 9
With on pin 8；When the fluid power of drilling fluid persistently increases to the shearing strength more than pin 8, pin 8 is cut, and mandrel 2 exists
Moved in first chamber 11 to the direction of the second end 20, until the interior bottom to solid first chamber 11.First through hole 21 and second
Through hole 22 staggers, i.e., now mandrel 2 is in the second working condition with first chamber 11.And due to along longitudinally, the second through hole
The distance between 22 and fourth hole 24 are more than the size of mandrel 2, therefore when mandrel 2 is moved to the interior bottom to solid first chamber 11
During end, mandrel 2 releases blocking to fourth hole 24, so that fourth hole 24 connects with first chamber 11, and then links up
The chamber 13 of first chamber 11 and the 3rd, the 3rd chamber is reached through passage 14 through the drilling fluid that tubing string 30 is entered in first chamber 11
13, and eventually enter into the mud motor 40 connected with the 3rd chamber 13, carry out brill for it and repair work to provide driving fluid power.
The cross section of 3rd chamber 13 can be for polygon, such as can be quadrangle or hexagon, can and preferably
For circle；And along longitudinally, the 3rd chamber 13 can be straight pass, but be preferably that the area of section away from the second end 20 is more than
Close to the step type of the area of section at the second end 20, specifically, up big and down small step type as shown in Figure 2.In this way, according to stream
Law of conservation is measured, the flow velocity of drilling fluid can be increased by reducing the area of passage of drilling fluid, and then improve and enter well
For the flow velocity of the drilling fluid of lower power drilling tool 40 to increase the rotating speed of mud motor 40, the purpose for repairing efficiency is bored in lifting.
Completed using the string cleaner 100 of present embodiment after washing and cleaning operation, it is necessary to when being transferred to drilling and repairing well operation, under
Put pitching 9 and carry out seal pack to the lower space of tubing string 30, the fluid power of drilling fluid by pitching 9 act on pin 8 and by its
Cut, drilling fluid enters the 3rd chamber 13 under the communication of passage 14 into first chamber 11, and eventually enters into well dynamic
Drilling tool 40, so as to realize tubing string cleaning, drilling and repairing well quick joining, shorten construction period, improve operating efficiency.
In addition, the hydraulic resistance balance passage that annular space 7 of the cleaning fluid through being sequentially communicated, third through-hole 23, the 3rd chamber 13 are formed
Enter eventually into produced and fluid power P in the 3rd chamber 132Reverse fluid power P1Act in mandrel 2, so as to fluid power P2
Compensated for, fluid power P can be reduced1To the shear action of pin 8, prevent pin 8 from being cut the cleaning for causing tubing string 30 in advance
It is insufficient.
In one embodiment, check valve 5 is provided with the third through-hole 23, the check valve 5 can limit described
Liquid outflow in three chambers 13.When needing by hydraulic resistance balance passage to fluid power P2When being compensated for, third through-hole is arranged on
Check valve 5 in 23 can prevent from having been introduced into the cleaning fluid backflow in the 3rd chamber 13, so as to ensure that the lower end of mandrel 2 can have
The fluid power of appropriate pressure enough.In addition, when carrying out drilling and repairing well operation, check valve 5 can also prevent from entering in the 3rd chamber 13
Drilling fluid is flow in annular space 7, ensures that the fluid power of drilling fluid is not suffered a loss.
Fig. 5 is referred to, in a preferred embodiment, the check valve 5 includes：The third through-hole 23 can be jammed in
In plug 51, the plug 51 offers the fifth hole 25 connected with the third through-hole 23；It can set in the described 5th
Valve ball 52 on through hole 25, fifth hole 25 can be arranged to valve ball 52 with the contact surface that valve ball 52 is located and justify to the indent agreed with
Arcuation, function is similar to ball seat, so as to preferably ensure sealing effectiveness；All the time the spring 53 of compressive state, the bullet are in
The solid valve ball 52 in one end top of spring 53, the other end and the body 1 are affixed.When the cleaning fluid in annular space 7 acts on valve ball 52
On pressure when putting on the bias of valve ball 52 more than spring 53, valve ball 52 departs to be contacted with setting for fifth hole 25, cleaning
Liquid can enter in the 3rd chamber 13；When the pressure that the cleaning fluid in annular space 7 is acted on valve ball 52 decreases below spring 53
When putting on the bias of valve ball 52, valve ball 52 is biased on fifth hole 25 by spring 53, so that the chamber of annular space 7 and the 3rd
It is isolated between 13, prevents the cleaning fluid in the 3rd chamber 13 to be back in annular space 7.In addition, when carrying out drilling and repairing well operation, enter
Entering to the drilling fluid in the 3rd chamber 13 has certain hydraulic coupling, and the hydraulic coupling of drilling fluid can be acted on valve ball 52.Boring
Under the collective effect of hydraulic coupling and spring 53 bias of well liquid, valve ball 52 can be well set on fifth hole 25, prevented
Drilling fluid in 3rd chamber 13 is flow in annular space 7, so as to ensure that the fluid power of drilling fluid is not suffered a loss.
In addition, during washing and cleaning operation, in order to prevent the cleaning fluid in annular space 7 from entering shaft bottom, in the lower section of check valve 5
Annular space 7 is insulated, such as annular space 7 can be insulated using sliding sleeve switch the latter packer.Due to being carried out to annular space 7
Packing is prior art and is easier to realize, be will not be repeated here.
It these are only several embodiments of the present invention, those skilled in the art can be with according to application documents disclosure
Various changes or modifications are carried out without departing from the spirit and scope of the present invention to the embodiment of the present invention.
Claims (4)
1. string cleaner, it is characterised in that it includes：
Lengthwise extension body, the body have mutually back to first end and the second end, the first end can be connected with tubing string,
Second end can be connected with mud motor；
The first chamber being opened in the body, the first chamber is between the first end and second end, institute
Stating first chamber can connect with the tubing string, and the side wall of the body offers the first through hole connected with the first chamber；
Mandrel is provided with the first chamber, offers second chamber in the mandrel, the side wall of the mandrel offer with
Second through hole of the second chamber connection, the mandrel offers close to the end of the first end can connect first chamber
Room and the opening of the second chamber；
The mandrel has the first through hole can be made to be connected with second through hole first work with the first chamber
State, and the first through hole and second through hole can be made to stagger disconnected second working condition；
The body has the 3rd chamber connected with the first chamber, and the 3rd chamber is located at the first chamber and institute
State between the second end；
The side wall of the body offers the third through-hole with the 3rd chamber；
Described body sidewall interior edge longitudinally offers passage, the passage and the 3rd chamber, the 3rd chamber
Room can connect with the power drilling tool；
The mandrel sidewall offers the fourth hole that can turn on the first chamber and the passage, in the described first work shape
During state, the fourth hole is between second through hole and the opening；
The mandrel is fixedly installed in the first chamber by the pin with predetermined shearing strength；
Along longitudinally, the size of the first chamber is more than the size of the mandrel, described in second working condition
The distance between second through hole and the fourth hole are more than the size of the mandrel.
2. device as claimed in claim 1, it is characterised in that：The area of section of 3rd chamber away from second end is big
In the area of section close to second end.
3. device as claimed in claim 2, it is characterised in that：Check valve, the check valve are provided with the third through-hole
The liquid outflow in the 3rd chamber can be limited.
4. device as claimed in claim 3, it is characterised in that the check valve includes：
The plug that can be jammed in the third through-hole, the plug offer the fifth hole connected with the third through-hole；
It can set in the valve ball on the fifth hole；
Spring, the solid valve ball in one end top of the spring, the other end and the body are affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511029.0A CN105114016B (en) | 2015-08-19 | 2015-08-19 | String cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511029.0A CN105114016B (en) | 2015-08-19 | 2015-08-19 | String cleaner |
Publications (2)
| Publication Number | Publication Date |
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| CN105114016A CN105114016A (en) | 2015-12-02 |
| CN105114016B true CN105114016B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510511029.0A Active CN105114016B (en) | 2015-08-19 | 2015-08-19 | String cleaner |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063087A1 (en) * | 2000-02-24 | 2001-08-30 | Andergauge Limited | Bore cleaning |
| WO2004085793A1 (en) * | 2003-03-28 | 2004-10-07 | Smith International, Inc. | Wellbore annulus flushing valve |
| GB0503808D0 (en) * | 2004-02-24 | 2005-04-06 | Pump Tools Ltd | Flow diversion apparatus and method |
| CN1766281A (en) * | 2005-09-29 | 2006-05-03 | 中国海洋石油总公司 | Automatic switching three-way circulation joint for oil well |
| CN2881062Y (en) * | 2006-04-18 | 2007-03-21 | 屈延超 | Drill rod circulation well washing apparatus |
| CN101387191A (en) * | 2008-10-17 | 2009-03-18 | 大庆石油管理局 | Immobile string cleaner for vertical pipeline and method |
| CN104818960A (en) * | 2015-05-06 | 2015-08-05 | 中国石油大学(北京) | Inner blowout prevention double floating valves of double-wall drill pipe |
| CN204941397U (en) * | 2015-08-19 | 2016-01-06 | 中国石油天然气集团公司 | String cleaner |
-
2015
- 2015-08-19 CN CN201510511029.0A patent/CN105114016B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063087A1 (en) * | 2000-02-24 | 2001-08-30 | Andergauge Limited | Bore cleaning |
| WO2004085793A1 (en) * | 2003-03-28 | 2004-10-07 | Smith International, Inc. | Wellbore annulus flushing valve |
| GB0503808D0 (en) * | 2004-02-24 | 2005-04-06 | Pump Tools Ltd | Flow diversion apparatus and method |
| CN1766281A (en) * | 2005-09-29 | 2006-05-03 | 中国海洋石油总公司 | Automatic switching three-way circulation joint for oil well |
| CN2881062Y (en) * | 2006-04-18 | 2007-03-21 | 屈延超 | Drill rod circulation well washing apparatus |
| CN101387191A (en) * | 2008-10-17 | 2009-03-18 | 大庆石油管理局 | Immobile string cleaner for vertical pipeline and method |
| CN104818960A (en) * | 2015-05-06 | 2015-08-05 | 中国石油大学(北京) | Inner blowout prevention double floating valves of double-wall drill pipe |
| CN204941397U (en) * | 2015-08-19 | 2016-01-06 | 中国石油天然气集团公司 | String cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105114016A (en) | 2015-12-02 |
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Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Drilling Engineering Technology Research Institute, China National Petroleum Corp. Patentee after: China National Petroleum Corporation Co-patentee after: Beijing Petroleum Machinery Co., Ltd. Address before: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: Drilling Engineering Technology Research Institute, China National Petroleum Corp. Patentee before: China National Petroleum Corporation Co-patentee before: Beijing Petroleum Machinery plant |
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