CN105672975A - Automatic ball injector for segmented fracture of well mouth of horizontal well - Google Patents
Automatic ball injector for segmented fracture of well mouth of horizontal well Download PDFInfo
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- CN105672975A CN105672975A CN201610148007.7A CN201610148007A CN105672975A CN 105672975 A CN105672975 A CN 105672975A CN 201610148007 A CN201610148007 A CN 201610148007A CN 105672975 A CN105672975 A CN 105672975A
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- 238000007789 sealing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
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- 238000004880 explosion Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention relates to an automatic ball injector for segmented fracture of a well mouth of a horizontal well.The automatic ball injector comprises a hexagon nut, a flange cover, a stud, an upper connector, a fastening screw, a base, a ball injecting mechanism, a lower connector, a seal ring, a fracture ball and a fastening screw hole.The ball injecting mechanism comprises an AC servo anti-explosion motor, a motor frame, a crank, a rotating plate, a rotating disc, a small gear, a rotating disc inner column, a limiting rail, a limiting column, a rotating disc edge column, a rotating plate column, a pressure release hole and a motor rotating shaft.Safety of fracture construction can be improved, operation is easy, work intensity is lowered, work efficiency is improved, fracture production cost can be reduced, safe, efficient and continuous ball injecting is achieved, the yield of shale gas is improved, and the automatic ball injector has a great effect on economical production of shale gas.
Description
Technical field
Patent of the present invention belongs to technical field of petroleum machinery, and especially a kind of realization is automatically thrown pressure break ball at well head and carried out a kind of staged fracturing of horizontal well well head pitching machine of staged fracturing of horizontal well.
Background technology
As a kind of brand-new spatter property energy, shale gas is increasingly becoming the focus of the energy development in the whole world. The technology that the mining type of shale gas mainly combines with horizontal well and staged fracturing, pitching fracturing technique is the fracturing technique that staged fracturing of horizontal well is common, pitching fracturing technique relies on well head and throws pressure break ball to complete pressure break, and therefore well head ball injector plays a significant role in staged fracturing of horizontal well.
But, current China ball injector there is also a lot of not enough place, is embodied in these aspects following: the structure of ball-throwing apparatus is excessively complicated, volume is relatively larger, operation is wasted time and energy; Needing to load one by one during dress ball, efficiency is very low; The Limited Number of thrown pressure break ball, it is impossible to realize multistage pressure break; Continuous pitching can not be carried out so that the work efficiency of pressing crack construction is very low; Need pressure release during part ball injector pitching, open ball injector and again fill ball, not only during operating cost, during pressure release, there is very big potential safety hazard.
Summary of the invention
It is contemplated that overcome the drawbacks described above that prior art and equipment exist, it is proposed to a kind of staged fracturing of horizontal well well head pitching machine, it is possible to replace the like product belonging to patent of present stage.
For achieving the above object, the present invention is by the following technical solutions.
A kind of staged fracturing of horizontal well well head pitching machine, including hex nut, blind flange, stud, top connection, trip bolt, base, pitching mechanism, lower contact, sealing ring, pressure break ball and fastening screw, wherein, top connection upper flanges structure is used for loading pressure break ball, pressure break ball covers with blind flange after loading, and top connection upper flanges structure and blind flange are attached by stud and hex nut and fix; The sealing ring of top connection upper flanges structure and blind flange junction seals, it is prevented that the high pressure fracture hydrorrhea within ball injector goes out; Top connection is internally hollow pipeline, is sequentially arranged with multiple pressure break ball according to size is ascending;Top connection lower end and base top edge are fixed by trip bolt, and pitching mechanism is mostly installed at chassis interior, it is achieved the function of automatic single pitching; Base lower end and lower contact upper end are fixed together by welding, and the flange arrangement of lower contact lower end is connected with the hydraulic control plug valve of fracture well head tree, fixing whole pressure break ball injector; Pitching mechanism includes AC servo fire-proof motor, motor rack, crank, flap, rotating disk, little gear, rotating disk inner post, limit track, limited post, disk edge post, flap post, relief hole and machine shaft; Pitching mechanism is mostly installed at chassis interior, motor rack is fixed on the small arc-shaped end of base plate by trip bolt, AC servo fire-proof motor is fixed on inside motor rack, the machine shaft of AC servo fire-proof motor enters chassis interior through base plate, carries out coaxial cooperation by key connecting and little gear. Disk edge is the incomplete gear teeth, and rotating disk carries out gear with little gear and coordinates. Disk edge is uniformly distributed six arc-shaped limit tracks, and limited post moves in limit track, and the rotary motion trace of restriction rotating disk, limited post is fixed on base plate. Disk edge is uniformly distributed six disk edge posts, crank one end cylindrical hole and disk edge post concentric fit, the other end and the flap post concentric fit being fixed on flap, the cylindrical hole of the flap other end and the rotating disk inner post concentric fit being fixed on base plate. Flap is split to form by 1/5th cylinders, and center has concave spherical surface, and convenient location pressure break ball, five pieces of flaps rotate around rotating disk inner post simultaneously, it is possible to form different size of aperture, thus throwing in various sizes of pressure break ball. So just can pass through to control AC servo fire-proof motor to rotate, drive and machine shaft carry out the pinion rotation of key connecting, and then drive carries out the rotating disk rotation that gear coordinates with little gear, rotating disk rotates through crank handle turns flap and rotates around rotating disk inner post, the center bore of five pieces of flap formation is big from little change gradually, thus realizing throwing in pressure break ball successively according to size is ascending. Inside rotating disk, have relief hole, be used for ensureing top connection and the pressure balance of lower contact inner space, it is prevented that the work of pitching mechanism is subject to the impact of pressure reduction.
The present invention works under environment under high pressure, rotates by controlling AC servo fire-proof motor, throws in multiple pressure break ball successively according to the order that size is ascending, completes staged fracturing of horizontal well work.
During dress ball, closing the hydraulic control plug valve being connected with lower contact lower end, now the pressure within apparatus of the present invention is normal pressure, opens the blind flange being connected with top connection upper end, then according to the rule that size is from small to large is sequentially loaded into all of pressure break ball, cover with blind flange after dress ball.
During pitching, opening and be connected hydraulic control plug valve with lower contact lower end, the present invention connects with well head pressure break tree, and the pressure within the present invention is identical with well head pressure. under original state, pitching mechanism is closed, and five pieces of flap centers do not form aperture. under duty, control AC servo fire-proof motor to start to rotate, drive and machine shaft carry out the pinion rotation of key connecting, and then drive carries out the rotating disk rotation that gear coordinates with little gear, rotating disk rotates through crank handle turns flap and rotates around rotating disk inner post, the center bore of five pieces of flap formation grows out of nothing gradually, big from little change, when the center bore that five pieces of flaps are formed and minimum pressure break ball are equivalently-sized, AC servo fire-proof motor quits work, now smallest size of pressure break ball relies on gravity to fall in fracture well head, then enter in well with fracturing fluid, arrive the position of stratum wanting pressure break, open pitching fracturing sliding bush, complete pressure break. AC servo fire-proof motor works on afterwards, the center bore of five pieces of flap formation continues to become big, when the center bore that five pieces of flaps are formed is equivalently-sized with secondary little pressure break ball, AC servo fire-proof motor quits work, the pressure break ball that now size time is little relies on gravity to fall in fracture well head, completes the pitching work of the little pressure break ball of size time. adopt identical method, put into all of pressure break ball successively according to size rule from small to large, complete fracture job.
This beneficial effect of the invention is in that: apparatus of the present invention are when filling ball, it is possible to once load all of pressure break ball, easy to operate, and efficiency is high;During pitching, the present invention only need to once fill ball, it is possible to carries out repeatedly pitching by controlling AC servo fire-proof motor. This device can improve the safety of pressing crack construction, simultaneously easily operated, alleviate working strength, improve work efficiency, fracturing cost can also be reduced simultaneously, thus realizing pitching safe efficient, continuous, for improve shale gas yield, realize shale gas economy exploitation serve vital effect.
Accompanying drawing explanation
Fig. 1, apparatus of the present invention overall structure figure.
Fig. 2, apparatus of the present invention cut-away view.
Fig. 3, apparatus of the present invention pitchings mechanism structure chart.
Fig. 4, apparatus of the present invention pitching mechanism original state figure.
Fig. 5, apparatus of the present invention pitchings mechanism working state figure.
Description of symbols in figure: 1, hex nut; 2, blind flange; 3, stud; 4, top connection; 5, trip bolt; 6, base; 7, AC servo fire-proof motor; 8, motor rack; 9, lower contact; 10, sealing ring; 11, pressure break ball; 12, crank; 13, flap; 14, rotating disk; 15, little gear; 16, rotating disk inner post; 17, limit track; 18, limited post; 19, fastening screw; 20, disk edge post; 21, flap post; 22, relief hole; 23, machine shaft.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the invention will be further described:
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, staged fracturing of horizontal well well head pitching machine in the embodiment of the present invention, including hex nut 1, blind flange 2, stud 3, top connection 4, trip bolt 5, base 6, pitching mechanism, lower contact 9, sealing ring 10, pressure break ball 11 and fastening screw 19, wherein, top connection 4 upper flanges structure is used for loading pressure break ball 11, pressure break ball 11 covers with blind flange 2 after loading, and top connection 4 upper flanges structure and blind flange 2 are attached by stud 3 and hex nut 1 and are fixed. The sealing ring 10 of top connection 4 upper flanges structure and blind flange 2 junction seals, it is prevented that the high pressure fracture hydrorrhea within top connection 4 goes out. Top connection 4 is internally hollow pipeline, is sequentially arranged with multiple pressure break ball 11 according to size is ascending. Top connection 4 lower end is fixed by trip bolt 5 with base 6 top edge, and it is internal that pitching mechanism is mostly installed at base 6, it is achieved the function of automatic single pitching. Base 6 lower end and lower contact 9 upper end are fixed together by welding, and the flange arrangement of lower contact 9 lower end is connected with the hydraulic control plug valve of fracture well head tree, fixing whole device.
Pitching mechanism includes AC servo fire-proof motor 7, motor rack 8, crank 12, flap 13, rotating disk 14, little gear 15, rotating disk inner post 16, limit track 17, limited post 18, disk edge post 20, flap post 21, relief hole 22 and machine shaft 23, it is internal that pitching mechanism is arranged on base 6, motor rack 8 is fixed on the small arc-shaped end of base 6 base plate by trip bolt 5, it is internal that AC servo fire-proof motor 7 is fixed on motor rack 8, it is internal that the machine shaft 23 of AC servo fire-proof motor 7 enters base 6 through base 6 base plate, coaxial cooperation is carried out by key connecting and little gear 15. rotating disk 14 edge is the incomplete gear teeth, and rotating disk 14 carries out gear with little gear 15 and coordinates. rotating disk 14 edge is uniformly distributed six arc-shaped limit tracks 17, and limited post 18 moves in limit track 17, and the rotary motion trace of restriction rotating disk 14, limited post 18 is fixed on base 6 base plate.Rotating disk 14 edge is uniformly distributed six disk edge posts 20, crank 12 one end cylindrical hole and disk edge post 20 concentric fit, the other end and flap post 21 concentric fit being fixed on flap 13, the cylindrical hole of flap 13 other end and rotating disk inner post 16 concentric fit being fixed on base 6 base plate. Flap 13 is split to form by 1/5th cylinders, and center has concave spherical surface, and convenient location pressure break ball 11, five pieces of flaps 13 rotate around rotating disk inner post 16 simultaneously, it is possible to form different size of aperture, thus throwing in various sizes of pressure break ball 11. So just can pass through to control AC servo fire-proof motor 7 to rotate, drive and machine shaft 23 carry out the little gear 15 of key connecting and rotate, and then drive and carry out the rotating disk 14 that gear coordinates with little gear 15 and rotate, rotating disk 14 rotates through crank 12 and drives flap 13 to rotate around rotating disk inner post 16, the center bore of five pieces of flap 13 formation is big from little change gradually, thus realizing throwing in pressure break ball 11 successively according to size is ascending. Inside rotating disk 14, have relief hole 22, be used for ensureing top connection 4 and lower contact 9 inner space pressure balance, it is prevented that the work of pitching mechanism is subject to the impact of pressure reduction.
The present invention works under environment under high pressure, rotates by controlling AC servo fire-proof motor 7, throws in multiple pressure break ball 11 successively according to the order that size is ascending, completes staged fracturing of horizontal well work.
During dress ball, closing the hydraulic control plug valve being connected with lower contact 9 lower end, now the pressure within the present invention is normal pressure, opens the blind flange 2 being connected with top connection 4 upper end, then according to the rule that size is from small to large is sequentially loaded into all of pressure break ball 11, cover with blind flange 2 after dress ball.
During pitching, opening and be connected hydraulic control plug valve with lower contact 9 lower end, the present invention connects with well head pressure break tree, and the pressure within the present invention is identical with well head pressure. under original state, pitching mechanism is closed, and five pieces of flap 13 centers do not form aperture. under duty, control AC servo fire-proof motor 7 to start to rotate, drive and machine shaft 23 carry out the little gear 15 of key connecting and rotate, and then drive and carry out the rotating disk 14 that gear coordinates with little gear 15 and rotate, rotating disk 14 rotates through crank 12 and drives flap 13 to rotate around rotating disk inner post 16, the center bore of five pieces of flap 13 formation grows out of nothing gradually, big from little change, when the center bore that five pieces of flaps 13 are formed and minimum pressure break ball 11 are equivalently-sized, AC servo fire-proof motor 7 quits work, now smallest size of pressure break ball 11 relies on gravity to fall in fracture well head, then enter in well with fracturing fluid, arrive the position of stratum wanting pressure break, open pitching fracturing sliding bush, complete pressure break. AC servo fire-proof motor 7 works on afterwards, the center bore of five pieces of flap 13 formation continues to become big, when the center bore that five pieces of flaps 13 are formed is equivalently-sized with secondary little pressure break ball 11, AC servo fire-proof motor 7 quits work, now the little pressure break ball 11 of size time relies on gravity to fall in fracture well head, completes the pitching work of the little pressure break ball 11 of size time. adopt identical method, put into all of pressure break ball 11 successively according to size rule from small to large, complete fracture job.
Claims (3)
1. a staged fracturing of horizontal well well head pitching machine, it is characterized in that: include hex nut (1), blind flange (2), stud (3), top connection (4), trip bolt (5), base (6), pitching mechanism, lower contact (9), sealing ring (10), pressure break ball (11) and fastening screw (19), described top connection (4) upper flanges structure and blind flange (2) are attached by stud (3) and hex nut (1) and are fixed, described top connection (4) is internally hollow pipeline, it is sequentially arranged with multiple pressure break ball (11) according to size is ascending, described top connection (4) lower end is fixed by trip bolt (5) with base (6) top edge, it is internal that described pitching mechanism is arranged on base (6), described base (6) lower end and lower contact (9) upper end are fixed together by welding, the flange arrangement of described lower contact (9) lower end is connected with the hydraulic control plug valve of fracture well head tree, fixing whole device.
2. a kind of staged fracturing of horizontal well well head pitching machine according to claim 1, it is characterized in that: described pitching mechanism includes AC servo fire-proof motor (7), motor rack (8), crank (12), flap (13), rotating disk (14), little gear (15), rotating disk inner post (16), limit track (17), limited post (18), disk edge post (20), flap post (21), relief hole (22) and machine shaft (23), described motor rack (8) is fixed on the small arc-shaped end of base (6) base plate by trip bolt (5), it is internal that described AC servo fire-proof motor (7) is fixed on motor rack (8), it is internal that the machine shaft (23) of described AC servo fire-proof motor (7) enters base (6) through base (6) base plate, coaxial cooperation is carried out by key connecting and little gear (15), described rotating disk (14) edge is the incomplete gear teeth, described rotating disk (14) carries out gear with little gear (15) and coordinates, described rotating disk (14) edge is uniformly distributed six arc-shaped limit tracks (17), described limited post (18) moves in limit track (17), the rotary motion trace of restriction rotating disk (14), described limited post (18) is fixed on base (6) base plate, described rotating disk (14) edge is uniformly distributed six disk edge posts (20), described crank (12) one end cylindrical hole and disk edge post (20) concentric fit, the other end and flap post (21) concentric fit being fixed on flap (13), the cylindrical hole of described flap (13) other end and rotating disk inner post (16) concentric fit being fixed on base (6) base plate.
3. a kind of staged fracturing of horizontal well well head pitching machine according to claim 2, it is characterized in that: described flap (13) is split to form by 1/5th cylinders, center has concave spherical surface, five pieces of flaps (13) rotate around rotating disk inner post (16) simultaneously, form different size of aperture, thus throwing in various sizes of pressure break ball (11), described rotating disk (14) is internal has relief hole (22), it is ensured that top connection (4) and lower contact (9) inner space pressure balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148007.7A CN105672975B (en) | 2016-03-15 | 2016-03-15 | A kind of staged fracturing of horizontal well well head pitching machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610148007.7A CN105672975B (en) | 2016-03-15 | 2016-03-15 | A kind of staged fracturing of horizontal well well head pitching machine |
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| CN105672975A true CN105672975A (en) | 2016-06-15 |
| CN105672975B CN105672975B (en) | 2017-11-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091077A (en) * | 2017-06-26 | 2017-08-25 | 西安石油大学 | A kind of multifunctional well head automatic ball-throwing apparatus |
| CN107476795A (en) * | 2017-10-17 | 2017-12-15 | 西南石油大学 | A kind of multistage hydraulic control pressure break ball-throwing apparatus that sorts certainly |
| CN109707361A (en) * | 2019-01-07 | 2019-05-03 | 中国石油大学(华东) | A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment |
| CN112177554A (en) * | 2020-09-15 | 2021-01-05 | 中油国家油气钻井装备工程技术研究中心有限公司 | Remote control well head connecting device |
| 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 |
| CN115807642A (en) * | 2023-01-29 | 2023-03-17 | 江苏雄越石油机械设备制造有限公司 | Fracturing gas production wellhead with sealing mechanism |
| CN115846311A (en) * | 2023-02-08 | 2023-03-28 | 广州逸在智能科技有限公司 | Multi-channel multi-station dry ice cleaning equipment capable of spraying ice simultaneously |
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| CA2739411A1 (en) * | 2011-02-22 | 2012-08-22 | Stinger Wellhead Protection, Inc. | Horizontal frac ball injector |
| CN202467798U (en) * | 2012-03-26 | 2012-10-03 | 梅德荣 | Automatic foam rod adding and discharging device of natural gas well foam water pumping gas production |
| CN202707025U (en) * | 2012-08-22 | 2013-01-30 | 兰州城临石油钻采设备有限公司 | Novel multi-control type large-capacity, high-pressure and multilayer staged ball injection device |
| CN202900226U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Ball plugging feeding device for realizing multistage temporary plugging multi-joint fracturing process |
| CN104790932A (en) * | 2015-04-21 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous layered fracturing ball injector and control method thereof |
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2016
- 2016-03-15 CN CN201610148007.7A patent/CN105672975B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2739411A1 (en) * | 2011-02-22 | 2012-08-22 | Stinger Wellhead Protection, Inc. | Horizontal frac ball injector |
| CN202467798U (en) * | 2012-03-26 | 2012-10-03 | 梅德荣 | Automatic foam rod adding and discharging device of natural gas well foam water pumping gas production |
| CN202707025U (en) * | 2012-08-22 | 2013-01-30 | 兰州城临石油钻采设备有限公司 | Novel multi-control type large-capacity, high-pressure and multilayer staged ball injection device |
| CN202900226U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Ball plugging feeding device for realizing multistage temporary plugging multi-joint fracturing process |
| CN104790932A (en) * | 2015-04-21 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous layered fracturing ball injector and control method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091077A (en) * | 2017-06-26 | 2017-08-25 | 西安石油大学 | A kind of multifunctional well head automatic ball-throwing apparatus |
| CN107091077B (en) * | 2017-06-26 | 2023-02-28 | 西安石油大学 | Multifunctional well mouth automatic ball injection device |
| CN107476795A (en) * | 2017-10-17 | 2017-12-15 | 西南石油大学 | A kind of multistage hydraulic control pressure break ball-throwing apparatus that sorts certainly |
| CN109707361A (en) * | 2019-01-07 | 2019-05-03 | 中国石油大学(华东) | A kind of densification oil-gas reservoir rotating disc type well head automatic ball-throwing equipment |
| CN112177554A (en) * | 2020-09-15 | 2021-01-05 | 中油国家油气钻井装备工程技术研究中心有限公司 | Remote control well head connecting device |
| 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 |
| CN115807642A (en) * | 2023-01-29 | 2023-03-17 | 江苏雄越石油机械设备制造有限公司 | Fracturing gas production wellhead with sealing mechanism |
| CN115846311A (en) * | 2023-02-08 | 2023-03-28 | 广州逸在智能科技有限公司 | Multi-channel multi-station dry ice cleaning equipment capable of spraying ice simultaneously |
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| CN105672975B (en) | 2017-11-24 |
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Inventor after: Wang Hanxiang Inventor after: Zhang Yanwen Inventor after: Che Jiaqi Inventor after: Liu Yanxin Inventor after: Lan Wenjian Inventor after: Yang Hongde Inventor before: Wang Hanxiang Inventor before: Che Jiaqi Inventor before: Liu Yanxin Inventor before: Lan Wenjian Inventor before: Yang Hongde |
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Granted publication date: 20171124 Termination date: 20180315 |