CN115874967A - Downhole ball fishing device and ball fishing system - Google Patents
Downhole ball fishing device and ball fishing system Download PDFInfo
- Publication number
- CN115874967A CN115874967A CN202111145337.8A CN202111145337A CN115874967A CN 115874967 A CN115874967 A CN 115874967A CN 202111145337 A CN202111145337 A CN 202111145337A CN 115874967 A CN115874967 A CN 115874967A
- Authority
- CN
- China
- Prior art keywords
- ball
- fishing
- centralizer
- magnet
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000005291 magnetic effect Effects 0.000 claims description 46
- 230000005294 ferromagnetic effect Effects 0.000 claims description 12
- 230000001174 ascending effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 28
- 239000010959 steel Substances 0.000 abstract description 28
- 238000005406 washing Methods 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Abstract
The invention relates to the technical field of underground fishing, in particular to an underground ball fishing device and a ball fishing system, wherein the underground ball fishing device comprises an upper connector, a magnet sleeve, a magnet and a magnetism-isolating sleeve, a liquid inlet cavity with an upward opening is formed in the upper end of the upper connector, and a liquid outlet which is through from inside to outside and is inclined downwards is formed in the upper connector corresponding to the lower part of the liquid inlet cavity; the ball catching device comprises an underground ball catching device, an oil pipe joint, a check valve and a releasing device, wherein the lower end of the oil pipe joint is connected with the upper end of the check valve, the lower end of the check valve is connected with the upper end of the releasing device, and the lower end of the releasing device is connected with the upper end of the underground ball catching device. The ball fishing device is reasonable and compact in structure and convenient to use, well washing liquid is pumped into the oil pipe, then is sprayed into the annular space through the liquid outlet obliquely arranged on the upper joint, and can generate rotational flow to push the steel ball to move upwards to enter the magnetism-insulating sleeve, and then is adsorbed at the lower end of the magnet sleeve by the magnet, and finally the ball fishing device is lifted out of a wellhead to remove the steel ball.
Description
Technical Field
The invention relates to the technical field of underground fishing, in particular to an underground ball fishing device and a ball fishing system.
Background
In recent years, casing cementing of a horizontal well and staged fracturing of open hole completion are new technologies for exploiting unconventional oil and gas reservoirs, and by means of technologies such as increasing the drainage area of the oil and gas reservoir, utilizing the volume, changing the flow form of oil and gas and the like, operation processes such as casing cementing, perforating and the like are omitted, and the productivity of the unconventional oil and gas reservoirs can be remarkably improved. The horizontal well ball throwing type sliding sleeve staged fracturing technology can throw steel balls in the construction process frequently, and the steel balls need to be fished out due to the fact that the steel balls are insoluble and influence later-stage oil extraction efficiency. At present, an underground ball fishing device and a ball fishing system are developed to effectively fish out insoluble steel balls and recover the productivity of an oil well without using special fishing tools for the operation temporarily in China; the underground ball fishing device can improve the success rate of operation and reduce the times of lifting the pipe column, and has strong popularization and application values in practical and economic consideration.
Disclosure of Invention
The invention provides an underground ball fishing device and a ball fishing system, overcomes the defects of the prior art, and can effectively solve the problem that a special fishing tool is not available for steel balls thrown in the construction process of a horizontal well ball throwing type sliding sleeve staged fracturing technology.
One of the technical schemes of the invention is realized by the following measures: the utility model provides a drag for ball ware in pit, includes top connection, magnet cover, magnet and magnetic sleeve, and the top connection upper end is equipped with the ascending feed liquor chamber of opening, corresponds to be equipped with the liquid outlet that link up inside and outside and be the downward sloping form on the feed liquor chamber lower part position top connection, and the top connection lower extreme outside is in the same place with the inboard fixed mounting in magnet cover upper end, corresponds and is equipped with magnet in the magnet cover of top connection below position, and the magnet cover lower extreme outside is equipped with the magnetic sleeve that the lower extreme is located magnet cover below.
The following is a further optimization or/and improvement of one of the technical schemes of the invention:
the magnet sleeve can also comprise a spring, an outer ring groove is arranged on the outer side of the upper end of the magnet sleeve, an inner ring platform is arranged on the inner side of the upper end of the magnetism-insulating sleeve, and the inner ring platform is positioned in the outer ring groove; an outer ring platform is arranged on the outer side of the upper joint corresponding to the position between the liquid outlet and the magnet sleeve, and a spring is arranged in an outer ring groove corresponding to the position between the outer ring platform and the magnetism-insulating sleeve.
The lower end of the magnet sleeve can be provided with a circular arc guide shoe with a downward opening.
The second technical scheme of the invention is realized by the following measures: the ball fishing system comprises an underground ball fishing device, an oil pipe joint, a check valve and a release, wherein the lower end of the oil pipe joint is connected with the upper end of the check valve, the lower end of the check valve is connected with the upper end of the release, and the lower end of the release is connected with the upper end of the underground ball fishing device.
The following is further optimization or/and improvement of the second technical scheme of the invention:
the fishing rod can also comprise a strong magnetic fishing rod, and the strong magnetic fishing rod is arranged between the releasing part and the underground ball fishing device.
The hydraulic oscillator can be further included, and the hydraulic oscillator is arranged between the releasing and the underground ball fishing device.
The device also comprises a strong magnetic fishing rod and a hydraulic oscillator, wherein the lower end of the releasing hand is connected with the upper end of the hydraulic oscillator, the lower end of the hydraulic oscillator is connected with the upper end of the strong magnetic fishing rod, and the lower end of the strong magnetic fishing rod is connected with the upper end of the underground ball fishing device.
The device also comprises a centralizer, and the centralizer is arranged between the releasing tool and the underground ball catcher.
The device also comprises a centralizer and a strong magnetic fishing rod, the lower end of the releasing part is connected with the upper end of the centralizer, the lower end of the centralizer is connected with the upper end of the strong magnetic fishing rod, and the lower end of the strong magnetic fishing rod is connected with the upper end of the underground fishing device.
The device also comprises a centralizer and a hydraulic oscillator, wherein the lower end of the releasing part is connected with the upper end of the centralizer, the lower end of the centralizer is connected with the upper end of the hydraulic oscillator, and the lower end of the hydraulic oscillator is connected with the upper end of the underground ball fishing device.
The device also comprises a centralizer, a hydraulic oscillator and a strong magnetic fishing rod, wherein the lower end of the releasing part is connected with the upper end of the centralizer, the lower end of the centralizer is connected with the upper end of the hydraulic oscillator, the lower end of the hydraulic oscillator is connected with the upper end of the strong magnetic fishing rod, and the lower end of the strong magnetic fishing rod is connected with the upper end of the underground fishing device.
The invention has reasonable and compact structure and convenient use, the oil pipe and the upper joint are arranged together on the ground, the flushing fluid is pumped into the oil pipe by the equipment pump, the flushing fluid can be sprayed out from the liquid outlet on the upper joint to the lower oblique direction to enter the annular space, and then returns to the ground circulating tank from the annular space to realize circulating flushing; the rotational flow generated by the well washing liquid sprayed out of the liquid outlet pushes the steel ball to move upwards to enter the magnetism isolating sleeve, and then the steel ball is adsorbed at the lower end of the magnetic sleeve by the magnet, so that the steel ball can be salvaged, and whether the salvage is successful or not can be determined by the change of the indication number on a pressure gauge arranged on the equipment pump; according to different oil wells and conditions in the wells, the underground ball fishing device, the check valve, the releasing device, the strong magnetic fishing rod, the hydraulic oscillator and the centralizer in the prior art are combined into a corresponding ball fishing system, so that steel balls or ferromagnetic metal fish in the operating wells can be fished, and the underground ball fishing device has the characteristics of safety, simplicity, convenience and high efficiency.
Drawings
FIG. 1 is a front view semi-sectional structural schematic diagram of the first embodiment.
Fig. 2 is a schematic structural view, partially in section, of a front view of a second embodiment.
Fig. 3 is a schematic structural view, partially in section, of a front view of a third embodiment.
FIG. 4 is a schematic partial sectional structure view of the fourth embodiment in front view.
FIG. 5 is a schematic partial sectional structure view of the fifth embodiment in front elevation.
Fig. 6 is a schematic partial sectional structure view in front view of the sixth embodiment.
Fig. 7 is a schematic structural view, partially in section, of a front view of a seventh embodiment.
Fig. 8 is a schematic partial sectional structure view in front view of the eighth embodiment.
Fig. 9 is a schematic partial sectional structure view in front view of the ninth embodiment.
The codes in the figures are respectively: the device comprises a base, a liquid inlet cavity, a liquid outlet, a spring, an inner ring platform, an outer ring platform, a guide shoe, an oil pipe joint, a check valve, a release, a strong magnetic fishing rod, a hydraulic oscillator and a centralizer, wherein the base is 1, the magnet sleeve is 2, the magnet sleeve is 3, the magnetic isolation sleeve is 4, the liquid inlet cavity is 5, the liquid outlet is 6, the spring is 7, the inner ring platform is 8, the outer ring platform is 9, the guide shoe is 10, the oil pipe joint is 11, the check valve is 12, the release is 13, the strong magnetic fishing rod is 14, the hydraulic oscillator is 15 and the centralizer is 16.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to the following examples and figures:
the first embodiment is as follows: as shown in the attached drawing 1, the underground ball fishing device comprises an upper joint 1, a magnet sleeve 2, a magnet 3 and an absolute magnetic sleeve 4, wherein the upper end of the upper joint 1 is provided with a liquid inlet cavity 5 with an upward opening, the upper joint 1 at the position corresponding to the lower part of the liquid inlet cavity 5 is provided with a liquid outlet 6 which is internally and externally communicated and is in a downward inclined shape, the outer side of the lower end of the upper joint 1 is fixedly installed together with the inner side of the upper end of the magnet sleeve 2, the magnet sleeve 2 corresponding to the lower part of the upper joint 1 is internally provided with the magnet 3, and the outer side of the lower end of the magnet sleeve 2 is provided with the absolute magnetic sleeve 4 with the lower end positioned below the magnet sleeve 2. According to requirements, the inner side of the upper end of the upper joint 1 can be provided with threads, so that the upper joint can be conveniently and quickly connected with an oil pipe joint 11; the magnet 3 can be a 40SH neodymium iron boron strong magnet, and the magnet of the mark can also have strong magnetism at high temperature; in order to adjust the strength of the magnetism of the magnet, the magnet can be formed by combining a plurality of magnets; in addition, the magnet sleeve 2 has magnetism due to the magnet 3 and is easily adsorbed on the well wall, so that the magnetism insulation sleeve 4 capable of isolating magnetism is arranged on the outer side of the lower end of the magnetism insulation sleeve.
When the device is used, an oil pipe is installed with the upper connector 1 through the oil pipe connector 11, then the ball catcher is lowered to a position 1m above a steel ball (a position with the hanging weight lowered by 0.5 t) through the oil pipe, a flushing fluid is pumped into the oil pipe through an equipment pump on the ground, the flushing fluid is sprayed out from a fluid outlet 6 on the upper connector 1 to the inclined lower direction to enter an annular space, and then the flushing fluid returns to a ground circulating tank from the annular space to realize circulating flushing; the rotational flow that the well-washing liquid that is spout from liquid outlet 6 can produce promotes the steel ball upward movement and gets into in the magnetic insulating sleeve 4, then is adsorbed by magnet 3 in 2 lower extremes of magnet cover, can accomplish the salvage of steel ball, and whether salvage successfully or not accessible sets up the change of the registration on the manometer on the equipment pump. Generally, the steel ball can be successfully fished out only by lowering the ball fishing device for multiple times in the fishing process of the steel ball, namely, the ball fishing device is lowered to the hanging weight and lowered by 0.5t, lifted by 20m slowly and lowered to the original position (the hanging weight and lowered by 0.5 t), and the process is repeated for 2-3 times.
The underground ball fishing device can be further optimized or/and improved according to actual requirements:
as shown in the attached figure 1, the magnetic isolation sleeve further comprises a spring 7, an outer ring groove is formed in the outer side of the upper end of the magnet sleeve 2, an inner ring platform 8 is arranged on the inner side of the upper end of the magnetic isolation sleeve 4, and the inner ring platform 8 is located in the outer ring groove; an outer ring platform 9 is arranged on the outer side of the upper joint 1 corresponding to the position between the liquid outlet 6 and the magnet sleeve 2, and a spring 7 is arranged in an outer ring groove corresponding to the position between the outer ring platform 9 and the magnetism insulation sleeve 4. So set up, mainly consider that permanent magnet 3 is usually the texture more fragile, breakable, not shock-resistant vibrations, spring 7 can slow down the impact that the magnetic insulation cover received, prevents to receive the cracked use that influences this device of magnet 3 after violent impact because of the magnetic insulation cover.
As shown in fig. 1, the lower end of the magnet sleeve 2 is provided with a circular guide shoe 10 with a downward opening. By the arrangement, the contact area between the steel ball and the lower end of the magnet sleeve 2 can be effectively increased, so that the steel ball can be firmly adsorbed in the arc guide shoe 10; in addition, in order to conveniently salvage steel balls with different specifications, the lower end of the upper connector 1 and the inner side of the upper end of the magnet sleeve 2 can be connected through threads, a series of magnet sleeves 2 with different opening sizes can be further arranged, and therefore the steel balls with different sizes can be adsorbed by replacing the magnet sleeves 2 with different models.
Example two: as shown in fig. 2, the ball salvaging system using the downhole ball salvaging device in the first embodiment comprises the downhole ball salvaging device, an oil pipe joint 11, a check valve 12 and a releasing hand 13, wherein the lower end of the oil pipe joint 11 is connected with the upper end of the check valve 12, the lower end of the check valve 12 is connected with the upper end of the releasing hand 13, and the lower end of the releasing hand 13 is connected with the upper end of the downhole ball salvaging device. According to requirements, because the fluid distribution, the stratum structure, the well body structure, the casing condition and the well bottom condition of different oil wells are different, and the use of the underground ball fishing device can be influenced by the conditions, the underground ball fishing device and tools in the prior art need to be combined according to different oil wells so as to realize better fishing effect; in order to quickly block the oil well when an accident occurs in the fishing operation, a check valve 12 and a releasing hand 13 are arranged between the oil pipe and the underground ball catcher. Through the combination, the system is suitable for a vertical well, the condition in the well is simple (if the well is not obviously deformed and reduced), and the salvage is steel balls.
The ball fishing system can be further optimized or/and improved according to actual needs:
example three: as shown in the attached figure 3, the fishing rod device also comprises a strong magnetic fishing rod 14, and the strong magnetic fishing rod 14 is arranged between the releasing part 13 and the downhole ball catcher. According to the requirement, the strong magnetic fishing rod 14 is a strong magnetic fishing rod in the prior art, and is mainly used for fishing ferromagnetic metal fish. Through the combination, the system is suitable for a vertical well, the condition in the well is simple (if the well does not have obvious deformation and diameter shrinkage), and salvage objects are small ferromagnetic metal falling objects, ferromagnetic metal chips and steel balls.
Example four: as shown in figure 4, the hydraulic vibrator 15 is further included, and the hydraulic vibrator 15 is arranged between the releasing element 13 and the downhole ball catcher. The hydraulic oscillator 15 is a hydraulic oscillator in the prior art according to requirements, and the hydraulic oscillator 15 reduces friction between the tool and the borehole and reduces torsional vibration through self-generated longitudinal vibration. Through the combination, the system is suitable for the horizontal well with simple conditions in the well (such as no obvious deformation and diameter reduction in the well), long horizontal section and steel balls as salvage objects.
Example five: as shown in the attached figure 5, the fishing device also comprises a strong magnetic fishing rod 14 and a hydraulic oscillator 15, the lower end of the releasing part 13 is connected with the upper end of the hydraulic oscillator 15, the lower end of the hydraulic oscillator 15 is connected with the upper end of the strong magnetic fishing rod 14, and the lower end of the strong magnetic fishing rod 14 is connected with the upper end of the underground ball fishing device. . Through the combination, the system is suitable for the horizontal well with simple conditions in the well (such as no obvious deformation and diameter shrinkage in the well), long horizontal section, small ferromagnetic metal falling objects, more ferromagnetic metal scraps and steel balls.
Example six: as shown in figure 6, the device also comprises a centralizer 16, and the centralizer 16 is arranged between the releasing tool 13 and the downhole ball catcher. According to the requirement, the centralizer 16 is a sucker rod centralizer in the prior art, and can centralize a sucker rod in an inclined well section of a horizontal well, so that friction between the sucker rod and an oil pipe is prevented. Through the combination, the system is suitable for a vertical well but the condition in the well is complex, and the salvage objects are steel balls.
Example seven: as shown in the attached figure 7, the fishing rod also comprises a centralizer 16 and a strong magnetic fishing rod 14, the lower end of the releasing part 13 is connected with the upper end of the centralizer 16, the lower end of the centralizer 16 is connected with the upper end of the strong magnetic fishing rod 14, and the lower end of the strong magnetic fishing rod 14 is connected with the upper end of the underground ball fishing device. Through the combination, the system is suitable for a vertical well but the condition in the well is complex, and not only are more ferromagnetic metal fragments but also steel balls exist in the well.
Example eight: as shown in figure 8, the device also comprises a centralizer 16 and a hydraulic oscillator 15, the lower end of the releasing part 13 is connected with the upper end of the centralizer 16, the lower end of the centralizer 16 is connected with the upper end of the hydraulic oscillator 15, and the lower end of the hydraulic oscillator 15 is connected with the upper end of the downhole ball catcher. Through the combination, the system is suitable for horizontal wells, the conditions in the wells are complex, the horizontal sections are long, and the salvage is steel balls.
Example nine: as shown in figure 9, the fishing device also comprises a centralizer 16, a hydraulic oscillator 15 and a strong magnetic fishing rod 14, wherein the lower end of the releasing device 13 is connected with the upper end of the centralizer 16, the lower end of the centralizer 16 is connected with the upper end of the hydraulic oscillator 15, the lower end of the hydraulic oscillator 15 is connected with the upper end of the strong magnetic fishing rod 14, and the lower end of the strong magnetic fishing rod 14 is connected with the upper end of the underground ball catcher. Through the combination, the system is suitable for horizontal wells, the conditions in the wells are complex, the horizontal sections are long, and the steel balls are arranged in the wells in a large number of ferromagnetic metal fragments.
The technical characteristics form the best embodiment of the invention, the best embodiment has stronger adaptability and best implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. The utility model provides a drag for ball ware in pit, its characterized in that includes top connection, magnet cover, magnet and magnetic sleeve, and the top connection upper end is equipped with the ascending feed liquor chamber of opening, corresponds to be equipped with the liquid outlet that link up inside and outside and be the downward sloping form on the feed liquor chamber lower part position top connection, and the top connection lower extreme outside is in the same place with the inboard fixed mounting in magnet cover upper end, corresponds the magnet cover of top connection below position and is equipped with magnet in the magnet cover, and the magnet cover lower extreme outside is equipped with the magnetic sleeve that the lower extreme is located magnet cover below.
2. The downhole ball fishing device of claim 1, further comprising a spring, wherein an outer annular groove is formed on the outer side of the upper end of the magnet sleeve, an inner annular table is formed on the inner side of the upper end of the magnetism-insulating sleeve, and the inner annular table is located in the outer annular groove; an outer ring platform is arranged on the outer side of the upper joint corresponding to the position between the liquid outlet and the magnet sleeve, and a spring is arranged in an outer ring groove corresponding to the position between the outer ring platform and the magnetism-insulating sleeve.
3. The downhole ball fishing device according to claim 1 or 2, wherein the lower end of the magnet sleeve is provided with a circular arc guide shoe with a downward opening.
4. A ball fishing system using the downhole ball fishing device of any one of claims 1 to 3, comprising the downhole ball fishing device, an oil pipe joint, a check valve, and a thrower, wherein the lower end of the oil pipe joint is connected with the upper end of the check valve, the lower end of the check valve is connected with the upper end of the thrower, and the lower end of the thrower is connected with the upper end of the downhole ball fishing device.
5. The system of claim 4, further comprising a ferromagnetic fishing rod disposed between the releasing and downhole bailers.
6. The ball fishing system of claim 4, further comprising a hydraulic oscillator, wherein the hydraulic oscillator is disposed between the releasing and downhole ball fishing devices.
7. The system of claim 4, further comprising a strong magnetic fishing rod and a hydraulic oscillator, wherein the lower end of the releasing hand is connected with the upper end of the hydraulic oscillator, the lower end of the hydraulic oscillator is connected with the upper end of the strong magnetic fishing rod, and the lower end of the strong magnetic fishing rod is connected with the upper end of the downhole fishing device.
8. The ball fishing system of claim 4, further comprising a centralizer, the centralizer being disposed between the thrower and the downhole ball fishing device.
9. The system of claim 4, further comprising a centralizer and a ferromagnetic fishing rod, wherein the lower end of the release is connected to the upper end of the centralizer, the lower end of the centralizer is connected to the upper end of the ferromagnetic fishing rod, and the lower end of the ferromagnetic fishing rod is connected to the upper end of the downhole fishing device.
10. The ball fishing system of claim 4, further comprising a centralizer and a hydroscillator, wherein the lower end of the thrower is connected to the upper end of the centralizer, the lower end of the centralizer is connected to the upper end of the hydroscillator, and the lower end of the hydroscillator is connected to the upper end of the downhole ball fishing device; or/and the device also comprises a centralizer, a hydraulic oscillator and a strong magnetic fishing rod, wherein the lower end of the releasing part is connected with the upper end of the centralizer, the lower end of the centralizer is connected with the upper end of the hydraulic oscillator, the lower end of the hydraulic oscillator is connected with the upper end of the strong magnetic fishing rod, and the lower end of the strong magnetic fishing rod is connected with the upper end of the underground ball fishing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111145337.8A CN115874967A (en) | 2021-09-28 | 2021-09-28 | Downhole ball fishing device and ball fishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111145337.8A CN115874967A (en) | 2021-09-28 | 2021-09-28 | Downhole ball fishing device and ball fishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115874967A true CN115874967A (en) | 2023-03-31 |
Family
ID=85763685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111145337.8A Pending CN115874967A (en) | 2021-09-28 | 2021-09-28 | Downhole ball fishing device and ball fishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115874967A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070102161A1 (en) * | 2005-09-09 | 2007-05-10 | Gazewood Michael J | Magnetic fishing tool and method |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strongly magnetic special tool for fishing balls in oil-gas well |
| CN204113173U (en) * | 2014-10-20 | 2015-01-21 | 天合石油集团汇丰石油装备有限公司 | One partly cuts open formula strong magnetic die |
| CN204941411U (en) * | 2015-08-10 | 2016-01-06 | 中国石油天然气股份有限公司 | A kind of steel ball fisher |
| CN209212193U (en) * | 2018-11-18 | 2019-08-06 | 牡丹江市林海石油打捞工具有限公司 | A kind of strong magnetic and reacting cycle combined type mince fisher |
| CN211342854U (en) * | 2019-11-18 | 2020-08-25 | 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 | Reverse circulation flushing fishing device |
| CN212671638U (en) * | 2020-07-16 | 2021-03-09 | 正弦科技有限公司 | Trial production fishing tool |
-
2021
- 2021-09-28 CN CN202111145337.8A patent/CN115874967A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070102161A1 (en) * | 2005-09-09 | 2007-05-10 | Gazewood Michael J | Magnetic fishing tool and method |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strongly magnetic special tool for fishing balls in oil-gas well |
| CN204113173U (en) * | 2014-10-20 | 2015-01-21 | 天合石油集团汇丰石油装备有限公司 | One partly cuts open formula strong magnetic die |
| CN204941411U (en) * | 2015-08-10 | 2016-01-06 | 中国石油天然气股份有限公司 | A kind of steel ball fisher |
| CN209212193U (en) * | 2018-11-18 | 2019-08-06 | 牡丹江市林海石油打捞工具有限公司 | A kind of strong magnetic and reacting cycle combined type mince fisher |
| CN211342854U (en) * | 2019-11-18 | 2020-08-25 | 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 | Reverse circulation flushing fishing device |
| CN212671638U (en) * | 2020-07-16 | 2021-03-09 | 正弦科技有限公司 | Trial production fishing tool |
Non-Patent Citations (2)
| Title |
|---|
| 吴永兴;朱培珂;熊伟;: "连续油管打捞工艺在水平井的应用问题及措施", 石油矿场机械, no. 07, 25 July 2016 (2016-07-25), pages 84 - 87 * |
| 陆应辉;唐凯;任国辉;聂华富;杨登波;: "水平井泵送分簇射孔落鱼打捞工艺及应用", 长江大学学报(自然科学版), no. 05, 25 May 2019 (2019-05-25), pages 23 - 28 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102242621B (en) | Negative pressure de-plugging and oil extraction process and device | |
| CN101191405A (en) | Rotary digging drilling machine jet flow reverse circulation rock drilling technique | |
| RU84048U1 (en) | BOREHOLESS COMPLEX FOR CARRYING OUT WASHLESS TECHNOLOGY | |
| CN201924839U (en) | Primary production string | |
| CN115874967A (en) | Downhole ball fishing device and ball fishing system | |
| CN205189805U (en) | Steel ball fisher | |
| CN209228342U (en) | A kind of continuous lift ram mining device of responding curve of well formula | |
| CN204327048U (en) | A kind of relief valve and use the Flushing tubular column of this relief valve | |
| RU146363U1 (en) | SECTIONAL HYDRO PERFORATOR | |
| CN214330514U (en) | Double-acting hydraulic impactor for petroleum drilling | |
| CN105089531A (en) | Oil field horizontal well oil extraction pipe column breakage, separation and well falling prevention device | |
| CN214273581U (en) | Lifting drilling type large-diameter well bottom in-situ pressure maintaining coring drilling tool | |
| RU2301879C1 (en) | Method for torn pipe removal from well | |
| CN210264609U (en) | Be arranged in heavy-duty probing borehole heavy object fishing tool that falls | |
| CN202544815U (en) | Exhaust string for deep-drawing process well | |
| CN2580096Y (en) | Underwell hydraulic pulling releasing device | |
| CN207048694U (en) | Hydraulic positioner | |
| CN201310316Y (en) | A two-stage cementing tool | |
| US3003562A (en) | Sand pump | |
| CN216517938U (en) | Self-filling sand-proof wax-proof extract production tool | |
| CN210623061U (en) | Oil inlet device of oil pump for preventing pin tools from acting halfway | |
| CN218493582U (en) | Tamping hammer for underground water monitoring well drilling clay layering water stopping | |
| CN209523719U (en) | A kind of rope piston hole flushing device | |
| CN216741419U (en) | Fishing device for petroleum underground operation | |
| CN2516688Y (en) | Graded freeing stuck tools for underpit operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |