CN109707361A - A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment - Google Patents
A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment Download PDFInfo
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- CN109707361A CN109707361A CN201910011109.8A CN201910011109A CN109707361A CN 109707361 A CN109707361 A CN 109707361A CN 201910011109 A CN201910011109 A CN 201910011109A CN 109707361 A CN109707361 A CN 109707361A
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Abstract
The invention patent belongs to technical field of petroleum machinery, practical particularly directed to fine and close oil-gas reservoir fracturing, for a kind of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment for realizing the pitching of arbitrary dimension sequence, completing the work of oil gas field staged fracturing and designing.The staged fracturing pitching operation of achievable arbitrary dimension sequence pressure break ball is rotated by controlling stepper motor, when shaft bottom section fracturing sliding bush breaks down or when needing to adjust fracturing work sequence, the adjustment of pressure break ball order of bowling can be completed according to field demand under the premise of not stopping work, construction efficiency is effectively improved, the complex working condition at fine and close oil-gas reservoir staged fracturing scene is preferably adapted to；Pressure break ball under the premise of controlling radial dimension, significantly reduces the height of pitching device by the way of circumferentially, to reduce the center of gravity of pitching device, operation, maintenance and the maintenance in later period are more convenient, effectively reduce operational risk, ensure fine and close oil-gas reservoir fracturing work site safety.
Description
Technical field
The invention patent belongs to technical field of petroleum machinery, practical particularly directed to fine and close oil-gas reservoir fracturing, is real
Incumbent meaning size order pitching, a kind of fine and close oil-gas reservoir rotating disc type well head completing the work of oil gas field staged fracturing and designing are automatic
Pitching device.
Background technique
In the case where country vigorously advocates the background of the low-carbon green energy, China's unconventional oil and gas (shale gas, coal bed gas, densification
Sandstone gas etc.) it quickly grows, horizontal well stage fracturing technology has become the effective means of fine and close Reservoir Development.Pitching pressure break skill
Art is that common fracturing technique is transformed in horizontal well fracturing, relies on well head and launches pressure break ball, opens fracturing sliding bush in shaft bottom
Mode carry out pressure break step by step, therefore well head ball injector is extremely important.
But ball injector substantially according to the ascending sequence of size fills ball at present, and according to ascending suitable of size
Sequence pitching one by one can only be by stopping when shaft bottom section fracturing sliding bush breaks down or when needing to adjust fracturing work sequence
Only fracturing work and pressure break ball carry out sequence adjustment is taken out, cannot achieve the dispensing of arbitrary dimension sequence pressure break ball；In addition, at present
The pressure break ball of ball injector is generally vertically installed inside ball cylinder according to the ascending sequence of size, and ball injector height is caused to compare
Greatly, after ball injector being installed to wellhead assembly, the operation in later period, maintenance and maintenance are inconvenient, while center of gravity is higher also increases
The risk of operation, cannot preferably adapt to the complex working condition at fine and close oil-gas reservoir staged fracturing scene.
Summary of the invention
The present invention is directed to overcome the prior art and equipment above shortcomings, a kind of fine and close oil-gas reservoir rotating disc type well is proposed
Mouth automatic ball-throwing equipment passes through control stepper motor rotation, adjustment gear turntable turned position, when specified ball storage chamber and pressure break ball
When hole is concentric, the dispensing of achievable specified pressure break ball, and then the staged fracturing pitching operation of arbitrary dimension sequence pressure break ball is completed,
The technical scheme adopted is as follows:
A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment, including studs, locking nut, turntable shell,
Stepper motor A, pedestal, stepper motor B, ball cylinder shell, flange capping, pressure break ball cylinder, pinion gear A, gear turntable A, pressure break ball
Hole A, bearing, pressure break ball B, gear turntable B, pinion gear B, pressure break ball, central pin shaft, positioning pin, ball storage chamber and locating slot, institute
It states stepper motor A and stepper motor B and is arranged symmetrically in turntable shell two sides, and stepper motor A output shaft and pinion gear A pass through key
Connection is coaxial fixed, and the pinion gear A and gear turntable A is engaged transmission, the edge the gear turntable A by the edge gear teeth
Arrange that pressure break ball A, the stepper motor B output shaft are connected by key coaxial fixation, the pinion gear B and tooth with pinion gear B
Wheel turntable B is engaged transmission by the edge gear teeth, the edge the gear turntable B arrangement pressure break ball B, the pinion gear A and
Pinion gear B is arranged in turntable shell, and the bearing is provided with two up and down, the gear turntable A centre bore and top
Bearing outer ring is coaxially fixed by interference fit, and the bearing outer ring of the gear turntable B centre bore and lower section passes through interference
Cooperation is coaxially fixed, and the bearing inner race is coaxially fixed with central pin shaft by interference fit, between two bearings
It is provided with minim gap, the gear turntable A and gear turntable B are rotated coaxially and be provided with minim gap between the two, described
Central pin shaft lower end is connected through a screw thread with pedestal upper end and is fixed, and the gear turntable A and gear turntable B are arranged in and turn
In disk casing and gear turntable A is arranged in above gear turntable B, and turntable shell lower end is with pedestal upper end by being welded and fixed
Connection, pedestal lower end ring flange are fixedly connected with wellhead assembly, and pressure break ball cylinder is arranged above the gear turntable A, described
Pressure break ball cylinder is arranged in ball cylinder shell and is interference fitted with ball cylinder shell, the top of the gear turntable A and pressure break ball cylinder it
Between be provided with minim gap, the circumferentially ball storage chamber of multiple and different sizes on the pressure break ball cylinder arranges in the ball storage chamber
The pressure break ball of correspondingly-sized size, the ball cylinder shell lower end are fixed with turntable upper shell by studs and locking nut
Connection, the ball cylinder upper shell are covered with flange and are fixedly connected by studs with locking nut.
Preferably, the pressure break ball cylinder is evenly arranged the storage ball of multiple and different sizes in identical circumferential radial location
Room, the gear turntable A arrange pressure break ball A, the pressure break ball A diameter in circumferential radial location identical with pressure break ball cylinder
Equal with maximum sized ball storage chamber's diameter, the gear turntable B is in circumferential radial location arrangement pressure identical with pressure break ball cylinder
Blastomere hole B, the pressure break ball B diameter are equal with maximum sized ball storage chamber's diameter.
Preferably, the ball cylinder shell inside edge is arranged symmetrically two positioning pins, the pressure break ball cylinder outer ledge pair
Claim arrangement two locating slots, the positioning pin is mounted in locating slot, and the positioning pin is equal with positioning groove width.
Preferably, the center of the pressure break ball cylinder is provided with central through hole, during the upper end of the central pin shaft passes through
Heart through-hole.
The present invention has the advantage that
(1) the staged fracturing pitching operation that achievable arbitrary dimension sequence pressure break ball is rotated by controlling stepper motor, when
Shaft bottom section fracturing sliding bush break down when or when needing to adjust fracturing work sequence, can under the premise of not stopping work according to
Field demand completes the adjustment of pressure break ball order of bowling, effectively improves construction efficiency, preferably adapts to fine and close oil-gas reservoir segmentation pressure
Split the complex working condition at scene；
(2) pressure break ball under the premise of controlling radial dimension, significantly reduces pitching device by the way of circumferentially
Highly, to reduce the center of gravity of pitching device, operation, maintenance and the maintenance in later period are more convenient, effectively reduce operational risk,
Ensure fine and close oil-gas reservoir fracturing work site safety.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
A kind of Fig. 1: overall structure figure of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment of the present invention；
A kind of Fig. 2: partial sectional view of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment of the present invention；
A kind of Fig. 3: internal structure top view of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment of the present invention；
A kind of Fig. 4: pressure break ball barrel structure figure of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment of the present invention.
Symbol description:
1, studs；2, locking nut；3, turntable shell；4, stepper motor A；5, pedestal；6, stepper motor B；7, ball
Cylinder shell；8, flange covers；9, pressure break ball cylinder；10, pinion gear A；11, gear turntable A；12, pressure break ball A；13, bearing；14,
Pressure break ball B；15, gear turntable B；16, pinion gear B；17, pressure break ball；18, central pin shaft；19, positioning pin；20, ball storage chamber；
21, locating slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The invention will be further described with example with reference to the accompanying drawing:
As shown in Figs 1-4, a kind of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment of the present invention, including studs 1,
Locking nut 2, turntable shell 3, stepper motor A4, pedestal 5, stepper motor B6, ball cylinder shell 7, flange cover 8, pressure break ball cylinder
9, pinion gear A10, gear turntable A11, pressure break ball A12, bearing 13, pressure break ball B14, gear turntable B15, pinion gear B16,
Pressure break ball 17, central pin shaft 18, positioning pin 19, ball storage chamber 20 and locating slot 21, the stepper motor A4 and B6 pairs of stepper motor
Title is arranged in 3 two sides of turntable shell, and stepper motor A4 output shaft is connected by key coaxial fixation with pinion gear A10, described small
Gear A 10 and gear turntable A11 is engaged transmission by the edge gear teeth, and pressure break ball is arranged at the edge the gear turntable A11
A12, the stepper motor B6 output shaft are connected by key coaxial fixation, the pinion gear B16 and gear turntable with pinion gear B16
B15 is engaged transmission by the edge gear teeth, and pressure break ball B14, the pinion gear A10 are arranged in the edge the gear turntable B15
It is arranged in turntable shell 3 with pinion gear B16, the bearing 13 is provided with two up and down, the gear turntable A11 centre bore
It is coaxially fixed with 13 outer ring of bearing of top by interference fit, the bearing of the gear turntable B15 centre bore and lower section
13 outer rings are coaxially fixed by interference fit, and 13 inner ring of bearing is carried out with central pin shaft 18 by interference fit coaxial
It is fixed, minim gap is provided between two bearings 13, the gear turntable A11 and gear turntable B15 are rotated coaxially and the two
Between be provided with minim gap, 18 lower end of central pin shaft is connected through a screw thread with 5 upper end of pedestal to be fixed, the gear
Turntable A11 and gear turntable B15 is arranged in turntable shell 3 and gear turntable A11 is arranged in above gear turntable B15, institute
It states 3 lower end of turntable shell to be fixedly connected by welding with 5 upper end of pedestal, the 5 lower end ring flange of pedestal is fixed with wellhead assembly
Connection, arranges pressure break ball cylinder 9 above the gear turntable A11, the pressure break ball cylinder 9 be arranged in ball cylinder shell 7 and with ball cylinder
Shell 7 is interference fitted, and is provided with minim gap, the pressure break ball cylinder between the top and pressure break ball cylinder 9 of the gear turntable A11
The circumferentially ball storage chamber 20 of multiple and different sizes on 9, the pressure break ball 17 of arrangement correspondingly-sized size, institute in the ball storage chamber 20
It states 7 lower end of ball cylinder shell and is fixedly connected by studs 1 with locking nut 2 with 3 upper end of turntable shell, the ball cylinder shell 7
Upper end is fixedly connected by studs 1 with locking nut 2 with flange capping 8.
The pressure break ball cylinder 9 is evenly arranged the ball storage chamber 20 of multiple and different sizes in identical circumferential radial location,
The gear turntable A11 arranges pressure break ball A12, the pressure break ball A12 in circumferential radial location identical with pressure break ball cylinder 9
Diameter is equal with maximum sized 20 diameter of ball storage chamber, and the gear turntable B15 is in circumferential radius position identical with pressure break ball cylinder 9
Arrangement pressure break ball B14 is set, the pressure break ball B14 diameter is equal with maximum sized 20 diameter of ball storage chamber.
7 inside edge of ball cylinder shell is arranged symmetrically two positioning pins 19, the 9 symmetrical cloth of outer ledge of pressure break ball cylinder
Two locating slots 21 are set, the positioning pin 19 is mounted in locating slot 21, and the positioning pin 19 is equal with 21 width of locating slot, real
The installation positioning of existing pressure break ball cylinder 9.
The center of the pressure break ball cylinder 9 is provided with central through hole, and the upper end of the central pin shaft 18 is logical across center
Hole.
The working principle of the invention is；The pressure break ball 17 of different sizes is arranged in the corresponding storage ball of pressure break ball cylinder 9
In room 20, and control by external controller the revolving speed and stop position of stepper motor A4 and stepper motor B6, transfer
Speed is controlled by the pulse signal frequency that controller issues, the pulse signal pulse nc that stop position is issued by controller
System, as soon as when the step actuator of stepper motor receives a pulse signal, it drives stepper motor by the direction rotation of setting
One fixed angle, referred to as " step angle ", its rotation are run step by step with fixed angle.Stepper motor A4 and
The stepper motor B6 coordinated movement of various economic factors under the control of the controller, and then realize to gear turntable A11 and the turned position gear turntable B15
Accurate control, as specified ball storage chamber 20, pressure break ball A12 and pressure break ball B14 concentric, achievable specified pressure break ball 17
It launches, realizes the staged fracturing pitching operation of arbitrary dimension pressure break ball on pressure break ball cylinder 9.
When filling ball, it is first turned on flange capping 8, it is corresponding that the pressure break ball 17 of different sizes is installed to pressure break ball cylinder 9
Ball storage chamber 20 in, flange capping 8 is then passed through into studs 1 and 2 company of being fixed of locking nut with 7 upper end of ball cylinder shell
It connects, is later fixedly connected entire pitching device with wellhead assembly by the ring flange of 5 lower end of pedestal, complete pitching and prepare
Work；
When pitching, then the pressure break ball 17 for needing to launch specified first controls stepper motor B6 by external controller and drives
Dynamic pinion gear B16 drives gear turntable B15 rotation, when gear turntable B15 turns to the pressure break ball B14 being arranged thereon and specifies
When the corresponding ball storage chamber 20 of pressure break ball 17 of dispensing is concentric, gear turntable B15 stops operating, and is controlled later by external controller
Stepper motor A4 driving pinion A10 drives gear turntable A11 rotation, when gear turntable A11 turns to the pressure break being arranged thereon
When ball A12 ball storage chamber 20 corresponding with the specified pressure break ball 17 launched is concentric, gear turntable A11 stops operating.It specifies at this time
It launches the corresponding ball storage chamber 20 of pressure break ball 17, pressure break ball A12 and pressure break ball B14 to realize with one heart, specifies the pressure break ball launched
17 can launch by 5 center funnel type chamber of pedestal into pit shaft by gravity, complete any pressure break ball on pressure break ball cylinder 9
Staged fracturing pitching work；
When reset, stepper motor B6 driving pinion B16 is controlled by external controller first, gear turntable B15 is driven to turn
It is dynamic, when the pressure break ball B14 being arranged on gear turntable B15 turns to initial position of the top without ball storage chamber 20, gear turntable
B15 stops operating, and controls stepper motor A4 driving pinion A10 by external controller later and drives gear turntable A11 rotation,
When the pressure break ball A12 being arranged on gear turntable A11 turns to initial position of the top without ball storage chamber 20, gear turntable A11
It stops operating.Pressure break ball A12 and pressure break ball B14 turns to initial position of the top without ball storage chamber 20 at this time, completes to throw
The initial reset of ball equipment works.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (4)
1. a kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment, it is characterised in that: including studs, locking nut,
Turntable shell, stepper motor A, pedestal, stepper motor B, ball cylinder shell, flange capping, pressure break ball cylinder, pinion gear A, gear turntable
A, pressure break ball A, bearing, pressure break ball B, gear turntable B, pinion gear B, pressure break ball, central pin shaft, positioning pin, ball storage chamber and
Locating slot.The stepper motor A and stepper motor B is arranged symmetrically in turntable shell two sides, and stepper motor A output shaft and small tooth
Wheel A is connected by key coaxial fixation, and the pinion gear A and gear turntable A is engaged transmission, the gear by the edge gear teeth
Pressure break ball A is arranged at the edge turntable A, and the stepper motor B output shaft is connected by key coaxial fixation with pinion gear B, described small
Gear B is engaged transmission by the edge gear teeth with gear turntable B, and pressure break ball B is arranged at the edge the gear turntable B, described
Pinion gear A and pinion gear B are arranged in turntable shell, and the bearing is provided with two up and down, the gear turntable A centre bore
It is coaxially fixed with the bearing outer ring of top by interference fit.The bearing outer ring of the gear turntable B centre bore and lower section
It is coaxially fixed by interference fit, the bearing inner race is coaxially fixed with central pin shaft by interference fit, and two
Be provided with minim gap between bearing, the gear turntable A and gear turntable B rotate coaxially and be provided between the two it is small between
Gap, the central pin shaft lower end is connected through a screw thread with pedestal upper end to be fixed, and the gear turntable A and gear turntable B are equal
It is arranged in turntable shell and gear turntable A is arranged in above gear turntable B.Turntable shell lower end passes through with pedestal upper end
Connection is welded and fixed, pedestal lower end ring flange is fixedly connected with wellhead assembly, and pressure break ball is arranged above the gear turntable A
Cylinder, the pressure break ball cylinder are arranged in ball cylinder shell and are interference fitted with ball cylinder shell, the top of the gear turntable A and pressure break
It is provided with minim gap between ball cylinder, the circumferentially ball storage chamber of multiple and different sizes on the pressure break ball cylinder, the ball storage chamber
The pressure break ball of interior arrangement correspondingly-sized size, the ball cylinder shell lower end and turntable upper shell pass through studs and locking screw
Mother is fixedly connected, and the ball cylinder upper shell is covered with flange and is fixedly connected by studs with locking nut.
2. a kind of fine and close oil-gas reservoir rotating disc type well head according to claim 1, it is characterised in that: the pressure break ball cylinder is in phase
With circumferential radial location be evenly arranged the ball storage chamber of multiple and different sizes, the gear turntable A with pressure break ball cylinder phase
Same circumferential radial location arranges that pressure break ball A, the pressure break ball A diameter are equal with maximum sized ball storage chamber's diameter.Institute
Gear turntable B is stated in circumferential radial location arrangement pressure break ball B identical with pressure break ball cylinder, the pressure break ball B diameter with most
Large-sized ball storage chamber's diameter is equal.
3. a kind of fine and close oil-gas reservoir rotating disc type well head automatic ball-throwing equipment according to claim 1 or 2, it is characterised in that:
The ball cylinder shell inside edge is arranged symmetrically two positioning pins, and the pressure break ball cylinder outer ledge is arranged symmetrically two positioning
Slot.The positioning pin is mounted in locating slot, and the positioning pin is equal with positioning groove width.
4. a kind of fine and close oil-gas reservoir rotating disc type well head according to claim 1, it is characterised in that: in the pressure break ball cylinder
Heart position is provided with central through hole.The upper end of the central pin shaft passes through central through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910011109.8A CN109707361A (en) | 2019-01-07 | 2019-01-07 | A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910011109.8A CN109707361A (en) | 2019-01-07 | 2019-01-07 | A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707361A true CN109707361A (en) | 2019-05-03 |
Family
ID=66260817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910011109.8A Pending CN109707361A (en) | 2019-01-07 | 2019-01-07 | A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562246A (en) * | 2022-03-21 | 2022-05-31 | 西南石油大学 | Continuous ball-throwing device with intelligent monitoring function for fracturing temporary plugging and method thereof |
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| CN204163704U (en) * | 2014-10-21 | 2015-02-18 | 四川康克石油科技有限公司 | A kind of rotating disc type automatic ball-throwing apparatus for acidifying separate stratum fracfturing operation |
| CN105422072A (en) * | 2015-12-10 | 2016-03-23 | 中国石油集团川庆钻探工程有限公司 | Multi-ball pitching machine |
| CN105672975A (en) * | 2016-03-15 | 2016-06-15 | 中国石油大学(华东) | Automatic ball injector for segmented fracture of well mouth of horizontal well |
| US20170023145A1 (en) * | 2015-07-24 | 2017-01-26 | Petrolvalves S.R.L. | Subsea electric actuator |
| CN206053923U (en) * | 2016-09-30 | 2017-03-29 | 四川康克石油科技有限公司 | A kind of oil gas pressure break remote auto pitching machine |
| CN107091077A (en) * | 2017-06-26 | 2017-08-25 | 西安石油大学 | A kind of multifunctional well head automatic ball-throwing apparatus |
| CN108775237A (en) * | 2018-05-28 | 2018-11-09 | 中石化石油工程技术服务有限公司 | The continuous ball-throwing apparatus of separate stratum fracfturing |
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2019
- 2019-01-07 CN CN201910011109.8A patent/CN109707361A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204163704U (en) * | 2014-10-21 | 2015-02-18 | 四川康克石油科技有限公司 | A kind of rotating disc type automatic ball-throwing apparatus for acidifying separate stratum fracfturing operation |
| US20170023145A1 (en) * | 2015-07-24 | 2017-01-26 | Petrolvalves S.R.L. | Subsea electric actuator |
| CN105422072A (en) * | 2015-12-10 | 2016-03-23 | 中国石油集团川庆钻探工程有限公司 | Multi-ball pitching machine |
| CN105672975A (en) * | 2016-03-15 | 2016-06-15 | 中国石油大学(华东) | Automatic ball injector for segmented fracture of well mouth of horizontal well |
| CN206053923U (en) * | 2016-09-30 | 2017-03-29 | 四川康克石油科技有限公司 | A kind of oil gas pressure break remote auto pitching machine |
| CN107091077A (en) * | 2017-06-26 | 2017-08-25 | 西安石油大学 | A kind of multifunctional well head automatic ball-throwing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114562246A (en) * | 2022-03-21 | 2022-05-31 | 西南石油大学 | Continuous ball-throwing device with intelligent monitoring function for fracturing temporary plugging and method thereof |
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Application publication date: 20190503 |