Well cementation vibration pipe nipple
Technical field
It is well cementation vibration pipe nipple the present invention relates to oil well fixed operation technical field.
Background technology
In oil well fixed operation technology, when carrying out traditional well cementing operation, when cement mortar is replaced in pipe it is outer to pipe when, water
It is unclean that mud may settle or manage outer drilling fluid displacing, causes Cementation Quality poor, not only increases construction follow-up
Remedy expense, completion time is extended again, is unfavorable for construction in later period, potential safety hazard will be brought.
The content of the invention
The invention provides well cementation vibration pipe nipple, the deficiency of above-mentioned prior art is overcome, it can effectively solve existing
Exist during the insertion instrument well cementation of traditional tieback waste time and energy, efficiency of construction is relatively low, the problem of there is potential safety hazard.
The technical scheme is that realized by following measures:Well cementation vibration pipe nipple, including pipe joint, core
Outside in the middle part of mandrel, mandrel is provided with inside axle, up-hole plate, baffle plate, impeller, eccentric cam and guide shoe head, pipe joint and is provided with first
Land, is less than the second land of the first land below the first land provided with diameter;Pipe joint upper inside wall is provided with upper land, pipe
Joint upper inner, which is set with the outside of up-hole plate, up-hole plate upper end, is butted on land lower end, and the middle part of up-hole plate is provided with upper center
Hole, mandrel upper end passes centre bore and positioned at the top of upper centre bore, and mandrel phase can be made by being provided between upper centre bore and mandrel
Up-hole plate is freely rotated and the descending upper limit part of up-hole plate can be limited, mandrel top, which is installed with, to be rotated with mandrel
And the impeller below the upper limit part, the lower end seat of impeller is in the first land;Inwall is provided with lower ring in the middle part of pipe joint
Groove, pipe joint inside middle portion is provided with the outside of the baffle plate being sleeved on the outside of the second land, baffle plate upper end and is butted on lower annular groove upper end, baffle plate
Middle part is provided with lower centre bore, and mandrel lower end passes lower centre bore and below lower centre bore, lower to be set between centre bore and mandrel
Having can be such that mandrel opposing flaps freely rotate and can limit the up lower limit part of baffle plate, and mandrel bottom is installed with can be with
The eccentric cam that mandrel is rotated, the upper end of eccentric cam is butted on the lower end of the second land, and the lower end fixed installation of mandrel is restricted
The descending spacing ring of eccentric cam;Plate circulation port is provided with up-hole plate, is provided with the middle part of pipe joint and is located at up-hole plate and baffle plate
Between pipe circulation port;Guide shoe head upper outside is fixedly installed togather with pipe joint lower inside, guide shoe head upper end and baffle plate
Lower end in contact is spacing.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned upper limit part may include upper pressing cap, deep groove ball bearing and upper gasket ring, and the upper end of mandrel has been connected through a screw thread
There is upper gasket ring below pressure cap, upper pressing cap, be provided between correspondence upper pressing cap and upper gasket ring on the outside of the mandrel of position and be located at up-hole plate
The deep groove ball bearing of inner side, upper centre bore upper inner is provided with upper centre bore land, and deep groove ball bearing upper end is located at upper centre bore
Below land;Lower limit part is thrust bearing, and thrust bearing is butted on below the first land and is sleeved in the second land, thrust
Bearing lower end is installed together with baffle plate.
Above-mentioned baffle plate upper surface can be provided with the baffle plate step being located between thrust bearing and pipe joint inwall.
It can be uniformly distributed with along the circumference on above-mentioned up-hole plate in the middle part of the plate circulation port that at least four diameters are not less than 20mm, pipe joint
Outside is uniformly distributed with the pipe circulation port that at least four diameters are not less than 20mm along the circumference.
Above-mentioned impeller may include blade and wheel hub, and the oblique circumference uniform distribution of blade is on wheel hub and rotation direction is consistent, blade
The angle of at least six and blade and horizontal plane is between 30 degree to 60 degree.
Above-mentioned mandrel upper outside can be provided with the inside of upper limit key, impeller provided with the impeller key that can be engaged with upper limit key
Outside is provided with to be provided with the inside of lower limit key, eccentric cam in the middle part of groove, mandrel can be engaged fixed eccentric cam with lower limit key
Keyway.
Above-mentioned spacing ring can be together by a threaded connection with mandrel lower end.
Above-mentioned guide shoe head can be together by a threaded connection with pipe joint.
Reasonable and compact in structure of the present invention, it is easy to use, by the way that displacement fluid is injected in pipe joint, in the promotion of displacement fluid
Under effect, by impeller and eccentric cam Combination Design, make the present invention occur to vibrate and drive lower tube string to vibrate, make water
Mud is evenly distributed, and prevents cement mortar from settling, and is conducive to cement mortar strong bonding, and subsequent field construction is played a role.
Brief description of the drawings
Accompanying drawing 1 is the main view broken section structural representation of preferred embodiment.
Accompanying drawing 2 is the cross section structure diagram at A-A in accompanying drawing 1.
Accompanying drawing 3 is the cross section structure diagram at B-B in accompanying drawing 1.
Coding in accompanying drawing is respectively:1 is pipe joint, and 2 be mandrel, and 3 be up-hole plate, and 4 be baffle plate, and 5 be impeller, and 6 be inclined
Cardiac prominence wheel, 7 be guide shoe head, and 8 be the first land, and 9 be the second land, and 10 be upper land, and 11 be upper centre bore, and 12 be lower annular groove,
13 be lower centre bore, and 14 be spacing ring, and 15 be plate circulation port, and 16 be pipe circulation port, and 17 be upper pressing cap, and 18 be deep groove ball bearing,
19 be upper gasket ring, and 20 be upper centre bore land, and 21 be thrust bearing, and 22 be baffle plate step, and 23 be upper limit key, and 24 be impeller key
Groove, 25 be lower limit key, and 26 be eccentric cam keyway.
Embodiment
The present invention is not limited by following embodiments, can technique according to the invention scheme and actual conditions it is specific to determine
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of each part is according to Figure of description 1
Butut mode be described, such as:The position relationship of forward and backward, upper and lower, left and right etc. is the Butut according to Figure of description
Direction is determined.
With reference to embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1,2,3, the well cementation with vibration pipe nipple include pipe joint 1, mandrel 2, up-hole plate 3, baffle plate 4, impeller 5, partially
Cardiac prominence wheel 6 and guide shoe first 7, the inside of pipe joint 1 are provided with mandrel 2, and the middle part of mandrel 2 outside is provided with the first land 8, in the first land 8
Lower section is less than the second land 9 of the first land 8 provided with diameter;The upper inside wall of pipe joint 1 is provided with upper land 10, the top of pipe joint 1
Inner sleeve, which is equipped with the outside of up-hole plate 3, the upper end of up-hole plate 3, is butted on the lower end of land 10, and the middle part of up-hole plate 3 is provided with upper centre bore
11, the upper end of mandrel 2 passes centre bore 11 and positioned at the top of upper centre bore 11, and energy is provided between upper centre bore 11 and mandrel 2
Mandrel 2 is freely rotated relative to up-hole plate 3 and the descending upper limit part of up-hole plate 3 can be limited, the top of mandrel 2 is installed with
Can be rotated with the mandrel 2 and impeller 5 below upper limit part, the lower end seat of impeller 5 is in the first land 8;Pipe joint 1
Middle part inwall is provided with lower annular groove 12, and the inside middle portion of pipe joint 1 is provided with the baffle plate 4 for being sleeved on the outside of the second land 9, the upper end of baffle plate 4
Outside is butted on the lower upper end of annular groove 12, and the middle part of baffle plate 4 is provided with lower centre bore 13, under the lower end of mandrel 2 passes lower centre bore 13 and is located at
The lower section of centre bore 13, being provided between lower centre bore 13 and mandrel 2 can make the opposing flaps 4 of mandrel 2 freely rotate and can limit baffle plate 4
Up lower limit part, the bottom of mandrel 2 is installed with the eccentric cam 6 that can be rotated with mandrel 2, the upper end of eccentric cam 6
The lower end of the second land 9 is butted on, the descending spacing ring 14 of restricted eccentric cam 6 is fixedly mounted in the lower end of mandrel 2;In up-hole plate
3 are provided with plate circulation port 15, and the pipe circulation port 16 being located between up-hole plate 3 and baffle plate 4 is provided with the middle part of pipe joint 1;Guide shoe first 7
Upper outside is fixedly installed togather with the lower inside of pipe joint 1, and first 7 upper end of guide shoe and 4 times end in contact of baffle plate are spacing.In well cementation
During, the upper end of pipe joint 1 injection displacement fluid, displacement fluid flows through up-hole plate 3, the plate circulation port 15 being provided with by up-hole plate 3
Impeller 5 is flowed to, impeller 5 rotates under the impetus of displacement fluid, and impeller 5 rotates mandrel 2, the rotation of mandrel 2 drives lower section partially
Cardiac prominence wheel 6, due to the non-uniform mass of eccentric cam 6, makes the present invention occur the vibration of frequency low-amplitude, and displacement fluid is from pipe joint
The pipe circulation port 16 that 1 middle part is provided with is flowed into, by impeller 5, because pipe circulation port 16 is located at the top of baffle plate 4, so that displacement fluid
Because of the closure of baffle plate 4, displacement fluid can be made to accelerate to flow out from pipe circulation port 16.Reasonable and compact in structure of the present invention, it is easy to use, lead to
Crossing impeller 5 and rotating rotates mandrel 2, drives eccentric cam 6 by the rotation of mandrel 2, makes vibrating device by eccentric cam 6
The vibration of frequency low-amplitude, drives pipe string to vibrate, cement mortar is evenly distributed, improve cement mortar by the vibration of vibrating device
Bonding quality, can reach good cementing quality.
Above-mentioned well cementation can be made further optimization and/or improvements with vibration pipe nipple according to actual needs:
As shown in Figure 1, upper limit part is held and upper gasket ring 19 including upper pressing cap 17, deep-groove ball axle 18, and the upper end of mandrel 2 passes through
Upper pressing cap 17 is threaded with, there is upper gasket ring 19 lower section of upper pressing cap 17, position between correspondence upper pressing cap 17 and upper gasket ring 19
The outside of mandrel 2 is provided with the deep groove ball bearing 18 for being located at the inner side of up-hole plate 3, and the upper upper inner of centre bore 11 is provided with upper centre bore land
20, the upper end of deep groove ball bearing 18 is located at the upper lower section of centre bore land 20;Lower limit part is thrust bearing 21, and thrust bearing 21 is supported
In the lower section of the first land 8 and it is sleeved in the second land 9, the lower end of thrust bearing 21 is installed together with baffle plate 4.Pass through upper limit
Part is spacing to up-hole plate 3, impeller 5 and mandrel 2, and lower limit part is spacing to baffle plate 4 and mandrel 2, can make work of the present invention
More stablize when making.
As shown in Figure 1, the upper surface of baffle plate 4 is provided with the baffle plate step being located between thrust bearing 21 and the inwall of pipe joint 1
22.In well cementing process, rotation can be made by baffle plate step and carried out by the baffle plate 4 that displacement fluid impacts spacing, and avoid pushing away
Power bearing 21 or so is acutely rocked, so that more stablizing during present invention work.
As shown in accompanying drawing 1,3, the plate circulation port that at least four diameters are not less than 20mm is uniformly distributed with up-hole plate 3 along the circumference
15, the middle part of pipe joint 1 outside is uniformly distributed with the pipe circulation port 16 that at least four diameters are not less than 20mm along the circumference.The He of plate circulation port 15
Pipe circulation port 16 can make control replace flow quantity, and plate circulation port 15 makes displacement fluid flow to after impeller 5, and what impeller 5 was rotated more puts down
Surely, pipe circulation port 16 makes displacement fluid outflow more steady, the quantity of increase pipe circulation port 16, by baffle plate 4 to displacement fluid to
The closure of the lower flow of pipe joint 1, can accelerate displacement fluid and be discharged out of pipe joint 1, so that turn of impeller 5 and eccentric cam 6
Move faster, therefore the vibration of reinforced pipe string, improve cement mortar bonding quality.
As shown in accompanying drawing 1,2, impeller 5 includes blade and wheel hub, and the oblique circumference uniform distribution of blade is on wheel hub and rotation direction
Unanimously, it is between 30 degree to 60 degree that blade quantity, which is at least the angle of six and blade and horizontal plane,.Blade in use
The flow velocity of controllable displacement fluid, makes the more steady of the rotation of impeller 5, during impeller 5 rotates, displacement fluid in pipe joint 1
Generation turbulent flow, the displacement fluid of turbulent has good souring during drilling fluid is replaced, and is conducive to preferably cleaning ring
Shape space, so that cement mortar strong bonding, contributes to subsequent field to construct.
As shown in accompanying drawing 1,2,3, the upper outside of mandrel 2 is provided with upper limit key 23, and the inner side of impeller 5 is provided with can be with upper limit key
Outside is provided with lower limit key 25 in the middle part of 23 impeller keyways 24 being engaged, mandrel 2, and the inner side of eccentric cam 6 is provided with energy and lower limit
Key 25 is engaged fixed eccentric cam keyway 26.By the cooperation of upper limit key 23 and impeller keyway 24, make impeller 5 and mandrel
More stablize during 2 rotation, by the cooperation of lower limit key 25 and eccentric cam keyway 26, when making eccentric cam 6 with the rotation of mandrel 2
More stablize.
As shown in Figure 1, spacing ring 14 is together by a threaded connection with the lower end of mandrel 2.It is connected through a screw thread and is easy to limit
Position ring 14 is dismantled from the lower end of mandrel 2.
As shown in Figure 1, guide shoe first 7 is together by a threaded connection with pipe joint 1.It is connected through a screw thread and is easy to guide shoe head
7 dismantle from pipe joint 1.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal implementation effect
Really, non-essential technical characteristic can be increased and decreased according to actual needs, to meet the demand of different situations.