CN105134132B - With brill down-hole by-pass valve - Google Patents
With brill down-hole by-pass valve Download PDFInfo
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- CN105134132B CN105134132B CN201510594268.7A CN201510594268A CN105134132B CN 105134132 B CN105134132 B CN 105134132B CN 201510594268 A CN201510594268 A CN 201510594268A CN 105134132 B CN105134132 B CN 105134132B
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Abstract
The present invention with boring down-hole by-pass valve, including underground switching valve, opens boomerang, closes boomerang and throws boomerang reception device to be a kind of, and the valve element that can be slided up and down is provided with underground switching valve, applies to valve element the spring of upward restoring force；Open boomerang and be provided with and pass through the outward flexible block of pretightning force；It is coaxially connected in the lower end of underground switching valve to throw boomerang reception device.In normal drilling, by-passing valve of the invention is closed, it is necessary to when working, and the by-passing valve can open or close in downhole.From existing different using stuff action, the present invention carries out opening and closing action using boomerang mode is thrown, relatively reliable.Drilling tool can not have been had in underground multiple switching, leak stopping is carried out with bulky grain sealing agent.It is easy to use, rate of penetration is fast, can be with fast blockage, efficient sand removal.
Description
Technical field
The present invention be on a kind of oil and gas well drilling instrument, it is more particularly to a kind of with boring down-hole by-pass valve.
Background technology
At present, following two situations occur in drilling engineering：
1) severe well leakage situation.In drilling process, the cooling of the Cutting movement, drilling tool of underground, the stabilization of the borehole wall
It is required for mud to complete.If the accumulation that leakage will result in downhole debris occurs in mud, the rate of penetration of drill bit is influenceed, makes brill
Well tool temperature it is too high can not normal work, the mud cake of the borehole wall cannot get dry and cracked come off of mud lubrication and ultimately causes cave-in etc.
Problem.So mud is referred to as the blood of drilling well, it is the very important part of normal drilling well.However, with stone these years
Oil exploitation is goed deep into, and the difficulty of drilling well is also more and more higher, the also more and more common appearance of various complicated strata conditions, mud
The situation of leakage also more and more occurs, and greatly disturbs the progress of normal drilling well.The side of the processing leakage used now
Method is：Plugging operations are carried out with bulky grain sealing agent, but bulky grain sealing agent can not pass through bit port.So Zhi Nengxian
Whole drilling tool is taken out into pit shaft, then the special leak stoppage tool of tripping in carries out operation again, and this just adds the whole operation process time
Long, labor strength increases.
2) horizontal well horizontal segment sand setting problem.During horizontal well horizontal segment is crept into, because the prop-carrying capacity of mud has
Limit often forms landwaste layer in horizontal segment bottom, with the accumulation of landwaste layer, ultimately causes brill plus the deadweight of drilling well silt particle
The viscous card bit freezing phenomenon of bar, so as to reduce the rate of penetration of drill bit, influences the overall progress of drilling well.In present horizontal well drilling day
In the case that benefit increases, such case can not be ignored.
Thus, the present inventor relies on is engaged in experience and the practice of relevant industries for many years, propose it is a kind of with boring down-hole by-pass valve,
The defects of to overcome prior art.
The content of the invention
It is an object of the invention to provide one kind with boring down-hole by-pass valve, easy to use, rate of penetration is fast, can quickly block up
Leakage, efficient sand removal.
The object of the present invention is achieved like this, a kind of with brill down-hole by-pass valve, described to include with brill down-hole by-pass valve：
Underground switching valve, the underground switching valve is interior to be applied back up provided with the valve element that can be slided up and down, to the valve element
The spring of multiple power；The first sprue formed with up/down perforation in the underground switching valve, can be connected with down-hole annular it is lateral
Runner；The valve element controls opening and the closing of the lateral channel by sliding up and down；
Boomerang is opened, the opening boomerang, which is provided with, passes through the outward flexible block of pretightning force；The opening boomerang can pass through
The flexible block backstop blocks first sprue in the valve element, and the opening boomerang promotes under drilling liquid pressure
The valve element, which glides, opens the lateral channel；
Boomerang is closed, the closing boomerang, which can enter in the valve element, is resisted against the opening boomerang upper end, while the closing boomerang
The lateral channel is blocked；The pretightning force that the closing boomerang is eliminated under drilling liquid pressure on the flexible block makes the bullet
Property block bounce back and then pass downwardly through the underground switching valve；
Boomerang reception device is thrown, the throwing boomerang reception device is coaxially connected in the lower end of the underground switching valve；The throwing boomerang
In reception device formed with first sprue axially through the second sprue and when second sprue is sealed
Drilling fluid is set to flow through the bypass flow channel of the throwing boomerang reception device after stifled；
Wherein, the closing boomerang promotes the opening boomerang to be moved down into the throwing boomerang reception device.
In the better embodiment of the present invention, underground switching valve includes down-hole switch valve body, the down-hole switch
Valve body center is provided with the body axial passage of up/down perforation, and the down-hole switch valve body side wall is provided with its body axial direction
The nozzle that passage connects with down-hole annular；
The valve element outer wall is set in the body axial direction with underground switching valve inner body wall ground in sealing contact coaxially slide
In passage, the spring is provided between the valve element bottom and down-hole switch valve body, the spring stretches along the vertical direction, institute
State spring upper end and lower end is born against on the valve element and the down-hole switch valve body；The valve element inwall, which is provided with, to be stopped
Keep off the snap ring of the flexible block；Valve element side wall above the snap ring is provided with the lateral open-work of valve element, and the valve element is to moving down
After dynamic, the lateral open-work of valve element connects to form the lateral channel with the nozzle.
In the better embodiment of the present invention, valve element is sleeve-shaped parts, and the valve core inside forms described first
A part for sprue, the snap ring are to form the annular boss in the valve element inwall；Valve element bottom outer wall is provided with one
Valve element stage portion downward, the spring housing is outside the valve element below the valve element stage portion, the underground switching valve sheet
A valve body stage portion upward is provided with below the spring on internal wall, the top and bottom of the spring are supported respectively
Lean against between the valve element stage portion and valve body stage portion.
In the better embodiment of the present invention, the body axial passage internal thread connection valve element block above valve element；
In initial position, the valve element upper end is resisted against on the valve element block；The lateral open-work of valve element is located above the nozzle
At a certain distance from.
In the better embodiment of the present invention, throwing boomerang reception device includes receiving basket body, the reception basket body
Center is provided with the reception basket axial passage of up/down perforation, and the reception basket body threaded upper ends are connected to the underground switching valve sheet
Body lower end；The reception basket for receiving coaxial threaded in basket axial passage and being connected with long tubular, the reception basket and the reception
Annular space formed with top and bottom closing between basket body；It is described to receive be internally formed up/down perforation described the of basket
A part for two sprues, the reception basket inside can accommodate the opening boomerang and close boomerang；The annular space forms described
Bypass flow channel；It is respectively equipped with the side wall for receiving basket upper and lower part and connects second sprue and the bypass flow channel
Logical the first open-work and the second open-work.
In the better embodiment of the present invention, receive in the reception basket axial passage above and below basket respectively
It is threaded with and receives basket block and lower reception basket block；Portion is provided with opening boomerang described in backstop and closes boomerang in the key for the reception
Boomerang stopper section, the boomerang stopper section is located at the top of second open-work.
In the better embodiment of the present invention, the upper reception that basket includes sequentially coaxially being threadedly coupled from top to bottom is received
Basket, middle reception basket and lower reception basket；The upper reception basket is threaded in the reception basket axial passage and on upper reception basket
End is resisted against on the upper reception basket block；The middle side wall for receiving basket upper end is provided with first open-work；Connect under described
The upper end of receipts basket extend into the middle reception basket and is internally formed the boomerang stopper section, and the lower bottom side of the wall for receiving basket is provided with
Second open-work, the lower lower end for receiving basket are resisted against on the lower reception basket block.
In the better embodiment of the present invention, opening boomerang includes opening boomerang main body, the top for opening boomerang main body
It is expander for column, bottom；The diameter of the expander is more than the diameter of the column；The expander circumferential side wall
Diameter from the top down gradually increase form coned face；
Be arranged with sliding block, the flexible block outside the column successively from top to bottom, the flexible block upper end and
Lower end is born against on the sliding block and expander；The flexible block is clamped and applies pretension by the sliding block and expander
Power, the flexible block is flared out in the presence of the coned face；By cutting between the column body sidewall and sliding block
Cut pin and be relatively fixed connection.
In the better embodiment of the present invention, flexible block is elastic pawl spring part, and the bottom of the flexible block is
Multiple elastic card claws that can be expanded outwardly being separated from each other；The coned face with the expander is provided with the inside of the elastic card claw
The inclined-plane of cooperation；
The upper end of the sliding block is provided with the first gum cover mounting groove of annular, is equipped with the first gum cover mounting groove to circumference
First gum cover protruding outside, the first gland is set in outside the column and is threadedly coupled with the upper end of slide block, by institute
The first gum cover is stated to be pressed in the first gum cover mounting groove；Positioned at certain distance above first gland on the column
Place is fixed with can back-up ring of the backstop on first gland；First gum cover can block first sprue.
In the better embodiment of the present invention, closing boomerang includes column closing boomerang main body, and the column closes boomerang
Main body upper end is provided with the second gum cover mounting groove of annular, be equipped with the second gum cover mounting groove to periphery it is prominent second
Gum cover, the second gland are threaded in the column and close boomerang main body upper end and second gum cover is pressed on into second glue
Cover in mounting groove；Second gum cover can block first sprue.
From the above mentioned, in normal drilling, by-passing valve of the invention is closed, it is necessary to when working, the by-passing valve
It can be opened or closed in downhole.From existing different using stuff action, the present invention is opened using boomerang mode is thrown
And closing motion, it is relatively reliable.Drilling tool can not have been had in underground multiple switching, leak stopping is carried out with bulky grain sealing agent.Make
It is fast with convenience, rate of penetration, can be with fast blockage, efficient sand removal.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：It is overall structure figure (do not put into open boomerang and closing boomerang) of the present invention with brill down-hole by-pass valve.
Fig. 2：For the structural representation of underground switching valve in the present invention.
Fig. 3：To throw the structural representation of boomerang reception device in the present invention.
Fig. 4：To open structural representation during boomerang original state in the present invention.
Fig. 5：To open the structural representation of state after boomerang pretightning force eliminates in the present invention.
Fig. 6：To close the structural representation of boomerang in the present invention.
Fig. 7：Schematic diagram during drilling well normal with brill down-hole by-pass valve for the present invention.
Fig. 8：For the present invention schematic diagram after boomerang is opened is opened with down-hole by-pass valve input is bored.
Fig. 9：It is the schematic diagram that the present invention is put into after closing boomerang with down-hole by-pass valve is bored.
Figure 10：To throw the schematic diagram that boomerang reception device loads after opening boomerang and closing boomerang in the present invention.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.
As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, Fig. 4 left sides into Fig. 6 are under upper, right side is.The invention provides one kind with
Down-hole by-pass valve 100 is bored, includes underground switching valve 10 with down-hole by-pass valve is bored, throw boomerang reception device 20 and supporting switched
The opening boomerang 30 and closing boomerang 40 of action.Apply in underground switching valve 10 provided with the valve element 101 that can be slided up and down, to valve element 101
The spring 102 of upward restoring force.The first sprue a formed with up/down perforation in underground switching valve 10, can be with down-hole annular 60
The lateral channel of connection.Valve element 101 is by sliding up and down opening and the closing of control lateral channel, valve element 101 during original state
Lateral channel is closed, lateral channel can be opened after slide downward, spring 102 can apply upward sliding to valve element 101
Restoring force, valve element 101 is closed lateral channel.
Open boomerang 30 and be provided with the flexible block 301 radially outward opened by pretightning force, open the maximum outside diameter of boomerang 30
Should meet to enter in valve element 101 and block the first sprue a, at the same open boomerang 30 can be by the backstop of flexible block 301
In valve element 101, so as to which the first sprue a for opening the lower section of boomerang 30 be blocked, opening boomerang 30 promotes valve under drilling liquid pressure
Core 101 glides together opens lateral channel.
The maximum outside diameter for closing boomerang 40 meets to enter in valve element 101 and seals the first sprue a for closing the lower section of boomerang 40
It is stifled.Closing boomerang 40, which enters in valve element 101 to be resisted against, opens the upper end of boomerang 30, while also blocks lateral channel, therefore drilling fluid is not
Break and pressurizeed to closing boomerang 40；Close boomerang 40 and apply pressure to opening boomerang 30 under drilling liquid pressure, when pressure reaches certain value,
The pretightning force on flexible block 301, which can be eliminated, makes flexible block 301 bounce back, and flexible block 301 is opened boomerang 30 and closed after bouncing back
Boomerang 40 can move downwards through underground switching valve 10 under drilling liquid pressure.
Throwing boomerang reception device 20 is coaxially connected to be used to receive and accommodate from underground switching valve in the lower end of underground switching valve 10
The 10 opening boomerangs 30 moved down and closing boomerang 40.Throw in boomerang reception device 20 formed with the first sprue a axially through
Second sprue b, bypass flow channel c, drilling fluid can pass through the throwing by the bypass flow channel c after the second sprue b is blocked
Boomerang reception device 20 flows backward.Wherein, boomerang 40 is closed by after the pretightning force elimination on flexible block 301, is closed boomerang 40 and is being bored
Promote opening boomerang 30 to be moved down under well liquid pressure to throw in boomerang reception device 20.Throwing is entered when opening boomerang 30 and closing boomerang 40
After boomerang reception device 20, the second sprue b is blocked, drilling fluid by bypass flow channel c by throw boomerang reception device 20 to flow down
It is dynamic.
With boring, down-hole by-pass valve 100 is coaxially connected in drilling rod 50, during normal drilling well, as shown in fig. 7, the direction of arrow in figure
For drilling fluid flow direction, drilling fluid is from the first sprue a, the second sprue b by the way that valve element 101 closes lateral channel.When
When needing to the injection sealing agent of down-hole annular 60, input, which opens boomerang 30, makes the downslide of valve element 101 open lateral channel, such as Fig. 8 institutes
Show, now, the first sprue a is blocked, and sealing agent carries out closure operation (arrow in figure from lateral channel into down-hole annular 60
It is shown).Input closes boomerang 40 after completing closure operation, the pretightning force on flexible block 301 is disappeared as shown in figure 9, closing boomerang 40
Remove, flexible block 301 opens boomerang 30 and closes boomerang 40 after bouncing back can move downwards through down-hole switch under drilling liquid pressure
Valve 10, enter and throw in boomerang reception device 20.After valve element 101 loses the downward active force of opening boomerang 30, in the restoring force of spring 102
The lower upward sliding of effect closes lateral channel, and now the first sprue a is opened, and drilling fluid enters by the first sprue a throws boomerang
In reception device 20, as shown in Figure 10, the second sprue b is blocked, and drilling fluid is by bypass flow channel c by throwing boomerang reception device
20, which flow downward, continues drilling well.If needing to block operation again, continue input opening boomerang 30 and close boomerang 40 to be acted, so
Back and forth, it is not necessary to drilling tool is proposed outside well, it is easy to use, rate of penetration is fast, can be with fast blockage, efficient sand removal.It can be done
The opening boomerang 30 that can be accommodated by throwing boomerang reception device 20 of closure operations number and close the quantity of boomerang 40 and determine, if for example, energy
Accommodate 5 pairs of opening boomerangs and close boomerang, drilling tool can just complete 5 complete closure operation process in underground.
Specifically, a kind of embodiment as the present invention, as shown in Fig. 2 underground switching valve 10 includes underground switching valve sheet
Body 103, down-hole switch valve body 103 are column, and the center of down-hole switch valve body 103 is provided with the cylindrical body axle of up/down perforation
To passage, the side wall of down-hole switch valve body 103 is provided with the nozzle 104 for connecting its body axial passage with down-hole annular 60；
Circumferencial direction of the nozzle 104 along the side wall of down-hole switch valve body 103 is uniformly provided with multiple, and the nozzle 104 can make bulky grain leak stopping
Agent passes through.Valve element 101 is columned sleeve-shaped parts, and valve element 101 is internally formed a first sprue a part, the first master
Runner a another part is made up of body axial passage.The outer wall of valve element 101 contacts with the inner wall sealing of down-hole switch valve body 103,
And coaxially slide is set in body axial passage, spring 102 is provided between the bottom of valve element 101 and down-hole switch valve body 103,
Spring 102 is stretched along the vertical direction, and the top and bottom of spring 102 are born against in valve element 101 and down-hole switch valve body 103
On, after the slide downward of valve element 101, the spring 102 applies upward restoring force to valve element 101.The inwall of valve element 101 is provided with can backstop
The snap ring 1011 of flexible block 301；Snap ring 1011 is to form the inwardly projecting annular boss in the inwall of valve element 101；Snap ring
The side wall of valve element 101 at a certain distance from 1011 tops is provided with the lateral open-work 1012 of valve element, and the lateral open-work 1012 of valve element is in valve element
The circumferencial direction of 101 side walls is evenly distributed with multiple, and its quantity and position are corresponding with nozzle 104, and valve element 101 moves down
Afterwards, the lateral open-work 1012 of valve element can connect to form lateral channel with nozzle 104.
The bottom outer wall of valve element 101 is provided with a valve element stage portion 1013 downward, in valve element stage portion below 1013
The annular recess that an external diameter is less than the external diameter of valve element 101 is formed on the outer wall of valve element 101, the coaxial sleeve of spring 102 is recessed in the annular
Outside the portion of falling into, a valve body stage portion upward is provided with positioned at the lower section of spring 102 on the inwall of down-hole switch valve body 103
1031, the top and bottom of spring 102 are born against between valve element stage portion 1013 and valve body stage portion 1031.Valve element 101
The body axial passage internal thread connection valve element block 105 of top.In initial position, the upper end of valve element 101 is resisted against valve element block
On 105；The lateral open-work 1012 of valve element is located at a certain distance from the top of nozzle 104.
Further, as shown in figure 3, throwing boomerang reception device 20 includes the reception basket body 201 of a column, basket body is received
201 center is provided with the reception basket axial passage of the cylindricality of up/down perforation, receives the upper end coaxial threaded of basket body 201 and is connected to well
The lower end of lower switch valve body 103, body axial passage with receive basket axial passage axially through.Receive coaxial in basket axial passage
It is threaded with and receives basket 202, receive the sleeve part that basket 202 is long tubular, its internal diameter can holds opening boomerang and closing boomerang
Receive wherein, the top and bottom outer wall for receiving basket 202 is in close contact with receiving the inwall of basket body 201 respectively, receives the middle part of basket 202
External diameter be less than the diameter for receiving basket axial passage, receive basket 202 and receive and sealed formed with top and bottom between basket body 201
The annular space 203 closed；The the second sprue b for being internally formed up/down perforation of basket 202 part is received, it is axially logical to receive basket
Road forms the second sprue b another part, receives the inside of basket 202 and opens boomerang 30 for receiving and close boomerang 40.Annular space
203 form bypass flow channel c, receive and are respectively equipped with the side wall of the upper and lower part of basket 202 by the second sprue b and bypass flow channel c
The first open-work 204 and the second open-work 205 of connection, the first open-work 204 and the second open-work 205 are equal along the circumferencial direction of basket 202 is received
It is even be provided with it is multiple.Receive to be threaded with respectively in the axial passage of reception basket 202 above and below basket 202 and receive basket block
206 and lower reception basket block 207.Receive the bottom of basket 202 and be provided with the boomerang stopper section 208 that backstop opens boomerang 30 and closing boomerang 40, boomerang
Stopper section 208 is located at the top of the second open-work 205.
Receive basket 202 include sequentially coaxially be threadedly coupled from top to bottom upper reception basket 2021, it is middle reception basket 2022 and under
Receive basket 2023；Upper reception basket 2021 is threaded in reception basket axial passage and upper reception basket 2021 upper end is resisted against and connect
Receive on basket block 206.The middle side wall for receiving the upper end of basket 2022 is provided with multiple first open-works 204, and multiple first open-works 204 are neighbouring
The top of annular space 203 is set.The lower upper end for receiving basket 2023 extend into middle reception basket 2022 and is internally formed boomerang stopper section
208, the lower bottom side of the wall for receiving basket 2023 is provided with multiple second open-works 205, multiple adjacent rings spaces of second open-work 205
203 bottom is set, and the lower lower end for receiving basket 2023 is resisted against on lower reception basket block 207.Can be with lower reception basket 2023
Setting prevents the check valve of blowout, will not be repeated here.
Further, as shown in Figure 4 and Figure 5, left side is top in figure, and right side is bottom, and opening boomerang 30 includes opening boomerang master
Body, the top for opening boomerang main body is column 302, bottom is expander 303；The diameter of expander 303 is more than column 302
Diameter；Gradually increase forms coned face 3031 to the diameter of the circumferential side wall of expander 303 from the top down；The lower end of expander 303
Be also provided with opening boomerang helmet 309, open boomerang helmet 309 it is equal with the diameter of the junction of expander 303 and for both most
Major diameter, boomerang stopper section 208, which can be resisted against, opens on boomerang helmet 309.Cunning is arranged with successively from top to bottom outside column 302
Block 304, flexible block 301, the top and bottom of flexible block 301 are born against on sliding block 304 and expander 303.Sliding block 304
And flexible block 301 is clamped and applies pretightning force by expander 303, in the presence of coned face 3031 flexible block 301 to
Outer opening.In the state of keeping flexible block 301 to be opened by pretightning force, pass through between the side wall of column 302 and sliding block 304
Shear pin 308 is relatively fixed connection.Flexible block 301 is elastic pawl spring part, and the bottom of flexible block 301 is mutually divided to be multiple
From the elastic card claw that can be expanded outwardly；The inclined-plane coordinated with the coned face 3031 of expander 303 is provided with the inside of elastic card claw.
After sliding block 304 and expander 303 clamp flexible block 301, elastic card claw along coned face 3031, outwards open by elasticity,
Flexible block 301 its external diameter after opening is more than the maximum gauge of expander 303, so as to be stuck in valve element by flexible block 301
On 101 snap ring 1011.
The upper end of sliding block 304 is provided with the first gum cover mounting groove of annular, is equipped with the first gum cover mounting groove to periphery
The first prominent gum cover 305, the first gland 306 are set in the outside of column 302 and are connected with the threaded upper ends of sliding block 304, by the
One gum cover 305 is pressed in the first gum cover mounting groove.It is fixed at a certain distance from the top of the first gland 306 on column 302
Having can back-up ring 307 of the backstop on the first gland 306；First gum cover 305 can block the first sprue a.Input closes boomerang 40
Afterwards, close boomerang and be pressed in the upper end for opening boomerang 30, that is, be pressed in the upper end of column 302, apply downward pressure to column 302, together
When flexible block 301 be stuck on snap ring 1011, when pressure reaches certain value, shear pin 308 is cut, as shown in figure 5, beating
Open boomerang main body to move down relative to the first gland 306 and sliding block 304, bullet is applied to by sliding block 304 and coned face 3031
Property block 301 on pretightning force be eliminated, flexible block 301 bounces back, open boomerang 30 can be moved down by snap ring 1011.
Further, boomerang main body 401 is closed as shown in fig. 6, closing boomerang 40 and including a column, column is closed in boomerang main body 401
End is provided with the second gum cover mounting groove of annular, and second gum cover 402 prominent to periphery is housed in the second gum cover mounting groove, the
Two glands 403 are threaded in column and close the upper end of boomerang main body 401 and the second gum cover 402 is pressed on into the second gum cover mounting groove
It is interior；Second gum cover 402 can block the first sprue a.The lower end for closing boomerang main body 401 is provided with closing boomerang helmet 404, closes boomerang
Helmet 404 is identical with the diameter for closing boomerang main body 401 junction, and closing the external diameter of boomerang 40, meet can be by snap ring 1011 to moving down
It is dynamic.First gum cover 305 and the second gum cover 402 are elastomeric material, can be moved down by snap ring 1011.
The present invention is consistent with the external diameter of drill collar with the entire outer diameter for boring down-hole by-pass valve 100, is 7 inches, first when it is installed
Spring 102 is put into down-hole switch valve body 103, after being then placed in valve element 101 in place, is put into valve element block 105, valve element gear
Block 105 is fixed by screw thread and down-hole switch valve body 103, after valve element block 105 is threaded onto position, passes through circlip for hole
It is fixed, prevent from coming off.Install again and throw boomerang reception device 20, upper reception basket block 206 by screw thread and is first received into basket body 201
Connection, then installation receive basket 202, receive basket 202 and divide for the part of upper, middle and lower three, each partly pass through screw thread
It is attached, after installing, basket 202 will be received and be put into reception basket body 201, connected by screw thread and reception basket body 201,
Lower reception basket block 207 is threaded in again and received in basket body 201, then position is carried out with circlip for hole and fixes.
In normal drilling well, it can be gone into the well with down-hole by-pass valve is bored with drilling tool, without individually rising.When needing leak stopping
During work, then input opens boomerang, opens boomerang and is promoted by drilling fluid (mud), is sitting at valve element snap ring, at this moment drilling fluid in instrument
Channel enclosed, pressure rise, and promote valve element descending when pressure reaches to a certain degree, finally connect lateral channel and down-hole annular
It is logical, start plugging operation.After plugging operation terminates, then input closes boomerang, and closing boomerang is in place afterwards by way of bruising unblock
Action, boomerang is closed under drilling fluid thrust and opens boomerang contact, because drilling fluid main channel is shut, close boomerang top and bore
Well liquid pressure improves, and when reaching certain pressure value, opens boomerang internal shear pin and is cut, close the lateral of underground switching valve
Runner, whole operation process are completed.At this moment, boomerang is closed because drilling fluid thrust, which continues to press on, opens boomerang advance, open boomerang
Enter the reception basket for throwing boomerang reception device with closing boomerang, the normal capacity for receiving basket is 5 groups of boomerangs (1 opening boomerang and 1 closing boomerang
For one group), but can be modified according to specific stratum, increase or decrease capacity.So repeatedly, with bore down-hole by-pass valve can be
Complete 5 complete operation process in underground.
From the above mentioned, in normal drilling, by-passing valve of the invention is closed, it is necessary to when working, the by-passing valve
It can be opened or closed in downhole.From existing different using stuff action, the present invention is opened using boomerang mode is thrown
And closing motion, it is relatively reliable.Drilling tool can not have been had in underground multiple switching, leak stopping is carried out with bulky grain sealing agent.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (9)
- It is 1. a kind of with brill down-hole by-pass valve, it is characterised in that described to include with brill down-hole by-pass valve：The underground switching valve of column, the underground switching valve is interior to be applied upwards provided with the valve element that can be slided up and down, to the valve element The spring of restoring force；The first sprue formed with up/down perforation, the side that can be connected with down-hole annular in the underground switching valve To runner；The valve element controls opening and the closing of the lateral channel by sliding up and down；Boomerang is opened, including opens boomerang main body, the top for opening boomerang main body is column, bottom is expander；The expansion The diameter of body is more than the diameter of the column；Gradually increase forms circular cone to the diameter of the expander circumferential side wall from the top down Shape face；It is arranged with sliding block, flexible block, the flexible block top and bottom difference outside the column successively from top to bottom It is resisted against on the sliding block and expander；The flexible block is clamped and applies pretightning force by the sliding block and expander, in institute The flexible block is flared out in the presence of stating coned face；Pass through shear pin phase between the column body sidewall and sliding block To being fixedly connected；The opening boomerang can be blocked first sprue in the valve element by the flexible block backstop, The opening boomerang, which promotes the valve element to glide, under drilling liquid pressure opens the lateral channel；Boomerang is closed, the closing boomerang, which can enter in the valve element, is resisted against the opening boomerang upper end, while the boomerang of closing is by institute State lateral channel closure；The pretightning force that the closing boomerang is eliminated under drilling liquid pressure on the flexible block makes the elasticity gear Block bounces back and then passes downwardly through the underground switching valve；Boomerang reception device is thrown, the throwing boomerang reception device is coaxially connected in the lower end of the underground switching valve；The throwing boomerang receives In device formed with first sprue axially through the second sprue and after second sprue is blocked Drilling fluid is set to flow through the bypass flow channel of the throwing boomerang reception device；Wherein, the closing boomerang promotes the opening boomerang to be moved down into the throwing boomerang reception device.
- 2. as claimed in claim 1 with brill down-hole by-pass valve, it is characterised in that the underground switching valve includes underground switching valve Body, the underground switching valve body center are provided with the body axial passage of up/down perforation, the down-hole switch valve body side wall It is provided with the nozzle for connecting its body axial passage with down-hole annular；The valve element outer wall is set in the body axial passage with underground switching valve inner body wall ground in sealing contact coaxially slide It is interior, the spring is provided between the valve element bottom and down-hole switch valve body, the spring stretches along the vertical direction, the bullet Spring top and bottom are born against on the valve element and the down-hole switch valve body；The valve element inwall is provided with can backstop institute State the snap ring of flexible block；Valve element side wall above the snap ring is provided with the lateral open-work of valve element, after the valve element moves down, The lateral open-work of valve element connects to form the lateral channel with the nozzle.
- 3. as claimed in claim 2 with boring down-hole by-pass valve, it is characterised in that the valve element is sleeve-shaped parts, the valve Core inner forms a part for first sprue, and the snap ring is to form the annular boss in the valve element inwall；It is described Valve element bottom outer wall is provided with a valve element stage portion downward, and the spring housing is outside the valve element below the valve element stage portion Portion, a valve body stage portion upward, the bullet are provided with below the spring in the underground switching valve inner body wall The top and bottom of spring are born against between the valve element stage portion and valve body stage portion.
- 4. as claimed in claim 3 with brill down-hole by-pass valve, it is characterised in that in the body axial passage above the valve element It is threadedly coupled valve element block；In initial position, the valve element upper end is resisted against on the valve element block；The lateral open-work of valve element At a certain distance from above the nozzle.
- 5. as claimed in claim 4 with brill down-hole by-pass valve, it is characterised in that the throwing boomerang reception device includes receiving basket sheet Body, the reception basket axial passage for receiving basket body center and being provided with up/down perforation, the reception basket body threaded upper ends connection In the down-hole switch valve body lower end；The reception basket for receiving coaxial threaded in basket axial passage and being connected with long tubular, institute State and receive basket and the annular space formed with top and bottom closing between receiving basket body；The inside shape for receiving basket Into a part for second sprue of up/down perforation, it can accommodate the opening boomerang inside the reception basket and close boomerang；Institute State annular space and form the bypass flow channel；It is respectively equipped with the side wall for receiving basket upper and lower part by second main flow The first open-work and the second open-work that road connects with the bypass flow channel.
- 6. as claimed in claim 5 with brill down-hole by-pass valve, it is characterised in that connect described in above and below the reception basket Receive to be threaded with respectively in basket axial passage and receive basket block and lower reception basket block；The reception is provided with backstop in portion in the key The boomerang stopper section opened boomerang and close boomerang, the boomerang stopper section is located at the top of second open-work.
- 7. as claimed in claim 6 with brill down-hole by-pass valve, it is characterised in that the reception basket includes same successively from top to bottom Upper reception basket, middle reception basket and the lower reception basket of axle thread connection；The upper reception basket is threaded in the reception basket axial direction In passage and upper reception basket upper end is resisted against on the upper reception basket block；The middle side wall for receiving basket upper end is provided with described First open-work；The lower upper end for receiving basket extend into the middle reception basket and is internally formed the boomerang stopper section, the lower reception The bottom side of the wall of basket is provided with second open-work, and the lower lower end for receiving basket is resisted against on the lower reception basket block.
- 8. as claimed in claim 7 with boring down-hole by-pass valve, it is characterised in that the flexible block is elastic pawl spring part, institute The bottom for stating flexible block is multiple elastic card claws that can be expanded outwardly being separated from each other；It is provided with and institute on the inside of the elastic card claw State the inclined-plane that the coned face of expander coordinates；The upper end of the sliding block is provided with the first gum cover mounting groove of annular, is equipped with the first gum cover mounting groove to periphery The first prominent gum cover, the first gland are set in outside the column and are threadedly coupled with the upper end of slide block, by described the One gum cover is pressed in the first gum cover mounting groove；It is solid at a certain distance from first gland top on the column Surely having can back-up ring of the backstop on first gland；First gum cover can block first sprue.
- 9. as claimed in claim 8 with brill down-hole by-pass valve, it is characterised in that the closing boomerang includes a column and closes boomerang master Body, the column close the second gum cover mounting groove that boomerang main body upper end is provided with annular, be equipped with the second gum cover mounting groove to The second gum cover that periphery protrudes, the second gland are threaded in the column and close boomerang main body upper end and by second glue Set is pressed in the second gum cover mounting groove；Second gum cover can block first sprue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594268.7A CN105134132B (en) | 2015-09-17 | 2015-09-17 | With brill down-hole by-pass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594268.7A CN105134132B (en) | 2015-09-17 | 2015-09-17 | With brill down-hole by-pass valve |
Publications (2)
| Publication Number | Publication Date |
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| CN105134132A CN105134132A (en) | 2015-12-09 |
| CN105134132B true CN105134132B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510594268.7A Active CN105134132B (en) | 2015-09-17 | 2015-09-17 | With brill down-hole by-pass valve |
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| CN (1) | CN105134132B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401530B (en) * | 2016-10-27 | 2019-03-08 | 宝鸡石油机械有限责任公司 | A kind of by-passing valve of drilling well energy repeat switch |
| CN107227942B (en) * | 2017-07-12 | 2023-07-28 | 中国石油天然气集团有限公司 | Leak-stopping short-circuit device while drilling |
| CN107165577B (en) * | 2017-07-22 | 2018-10-12 | 西南石油大学 | Screw underbalance pulse hydroscillator |
| CN108661593B (en) * | 2018-05-07 | 2020-11-06 | 中国海洋石油集团有限公司 | Plug matched with coiled tubing for operation |
| CN110541686B (en) * | 2018-05-28 | 2021-11-30 | 中国石油天然气股份有限公司 | One-way flow tool and tubing |
| CN109736744B (en) * | 2019-01-18 | 2024-03-08 | 长江大学 | Fixed-point quantitative plugging tool for oil well |
| CN110984887B (en) * | 2019-11-12 | 2020-12-04 | 中国石油大学(北京) | Drilling fluid flow guide device and drill column for plugging offshore high-temperature and high-pressure well |
| CN113027365B (en) * | 2019-12-24 | 2022-12-02 | 中国石油天然气集团有限公司 | Drilling and grinding multi-time opening and closing circulating valve |
| CN113006750B (en) * | 2021-03-17 | 2021-12-17 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
| CN114439424A (en) * | 2022-02-16 | 2022-05-06 | 成都德维石油技术服务有限责任公司 | Bypass valve capable of being opened and closed repeatedly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0220445D0 (en) * | 2002-09-03 | 2002-10-09 | Lee Paul B | Dart-operated big bore by-pass tool |
| US7387165B2 (en) * | 2004-12-14 | 2008-06-17 | Schlumberger Technology Corporation | System for completing multiple well intervals |
| CN101864925B (en) * | 2010-07-08 | 2013-07-31 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Drilling-free sizing collar and process |
| CN103306634B (en) * | 2012-03-09 | 2016-03-09 | 中国石油化工股份有限公司 | A kind of Sliding-sleeve-type downhole blow-out preventer and application thereof |
| CN202914063U (en) * | 2012-11-19 | 2013-05-01 | 中国石油集团渤海钻探工程有限公司 | Graduation-free sand blast perforating fracturing tool |
| CN205025432U (en) * | 2015-09-17 | 2016-02-10 | 中国石油天然气集团公司 | Along with bypass valve under well drilling |
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2015
- 2015-09-17 CN CN201510594268.7A patent/CN105134132B/en active Active
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| CN105134132A (en) | 2015-12-09 |
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