CN212027738U - Can annotate grey formula bridging plug release - Google Patents
Can annotate grey formula bridging plug release Download PDFInfo
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- CN212027738U CN212027738U CN202020476332.8U CN202020476332U CN212027738U CN 212027738 U CN212027738 U CN 212027738U CN 202020476332 U CN202020476332 U CN 202020476332U CN 212027738 U CN212027738 U CN 212027738U
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- pressure transfer
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Abstract
The utility model discloses a bridge plug releasing device capable of injecting ash, which comprises an upper joint, a central pipe, a push cylinder, an inner connecting pipe, a bridge plug breaking bolt, a seat seal pin, a seal ring and a steel ball; the upper joint and the central pipe, the inner connecting pipe and the central pipe and the inner connecting pipe and the bridge plug breaking bolt are connected through screw threads, and the lower part of the bridge plug breaking bolt is connected with the bridge plug; the push cylinder is sleeved outside the central tube and is fixed through a seat seal pin; sealing rings are arranged between the central pipe and the push cylinder and between the central pipe and the inner connecting pipe; the central tube is provided with a liquid flow pressure transfer hole and a first pressure transfer hole, the push cylinder is provided with a second pressure transfer hole, the inner connecting tube is provided with a third pressure transfer hole, and the first pressure transfer hole, the second pressure transfer hole and the third pressure transfer hole are coaxial and have the same aperture. The utility model discloses successfully realize bridge plug shutoff and annotate one trip of ash construction and bore, improved on-the-spot bridge plug shutoff and notes ash efficiency of construction, have apparent economic benefits and good social.
Description
Technical Field
The utility model relates to a petroleum industry workover technical field, concretely relates to can annotate grey formula bridging plug release.
Background
The bridge plug blocks the oil and gas well, because it is few in construction process, short in cycle, the position of blocking is accurate, so have got the wide application in the oil and gas well seal as soon as appearing, basically replaced the process technology of the previous cement plug seal, become the main seal process of the tested layer of plugging of the oil well to carry on the upper return oil testing; bridge plug plugging is also the most effective construction tool for permanent well abandonment construction.
Bridge plug plugging is generally divided into permanent plugging bridge plugs, removable plugging bridge plugs, drillable plugging bridge plugs and the like; the plugging construction of the well is divided into a cable conveying type and an oil pipe conveying type.
After the bridge plug is conveyed in place, the releasing is generally performed in a tension rod snapping mode no matter cable conveying releasing or oil pipe conveying releasing. For example: the utility model discloses a utility model patent (application number 201220627063.6, notice number CN 203050610U) of "electricity liquid integration bridge plug instrument of puting in" its technical scheme is: after the throwing tool is lowered to a setting position, a power supply is connected through a cable to drive a downhole hydraulic electric pump to start, high-pressure liquid is pumped and enters a piston cylinder through a water hole, and the piston cylinder is pushed to downwards compress the retrievable bridge plug for setting; the electro-hydraulic integrated bridge plug putting tool comprises a removable bridge plug, a hydraulic nipple and a piston cylinder; the removable bridge plug is formed by sequentially connecting an upper piston, a lower piston, a tension rod and a mandrel in series, wherein the rear end of the upper piston is connected with a hydraulic electric pump interface, a rubber cylinder is sleeved outside the tension rod, a slip cone and a slip are sleeved outside the mandrel, and the slip cone is arranged at the rear end of the slip; the hydraulic short section consists of a one-way valve, an overflow valve, a high-low pressure oil pipe, a pressure balance piston, a hydraulic electric pump, a magnetic coupler, a motor and an oil tank; one end of the high-low pressure oil pipe, which is externally sleeved with a pressure balance piston, is respectively connected with the one-way valve and the overflow valve, and the other end of the high-low pressure oil pipe is sequentially connected with the hydraulic electric pump, the magnetic coupler, the coupler and the motor and is arranged in the oil tank; the whole throwing tool is put into a well through a cable, the cable is connected with a motor, the motor is connected with a power supply and a hydraulic electric pump, the hydraulic electric pump is connected with a removable bridge plug through a hydraulic electric pump interface, and a piston cylinder is connected with an upper piston and a lower piston through a tension rod and a mandrel.
It is clear from the technical solution of the above patent that the releasing of the bridge plug still relies on the tension rod. However, the tension bar is a solid metal rod, and when the cement injection plugging construction is performed on the bridge plug again, the whole plugging construction, especially the permanent well abandoning construction, can be completed only by pulling out the drill and then injecting the cement pipe column.
At present, after a new safety environmental protection law is implemented in the country, the country makes new requirements on abandoned oil wells of oil fields, and the plugging construction conforming to the national environmental safety is only implemented when the upper part of some abandoned oil and gas wells is plugged by an ash injection section of a cement injection plug of more than 2-3 sections within a specified distance from the upper part of an oil and gas reservoir.
Therefore, how to simplify the construction link and shorten the time for plugging the bridge plug and injecting the ash becomes a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a can annotate grey formula bridging plug release, its successfully realize bridging plug shutoff and annotate a grey construction trip to bore, simplified the construction link, shortened the time of shutoff bridging plug and notes grey construction effectively.
The technical scheme of the utility model is that: a kind of bridge plug release device that can inject the ash, including top connection, central tube, push cylinder, inner connecting pipe, bridge plug breaking bolt, seat seal pin, seal ring and steel ball; the upper part of the upper joint is provided with a first female buckle connected with the lower part of the oil pipe, the lower part of the upper joint is provided with a first male buckle, the upper part of the central pipe is provided with a second female buckle, the lower part of the central pipe is provided with a third female buckle, the middle part of the internal connection pipe is provided with a second male buckle, the lower part of the internal connection pipe is provided with a fourth female buckle, the upper part of the bridge plug breaking bolt is provided with a third male buckle, the lower part of the bridge plug breaking bolt is connected with the bridge plug, the first male buckle of the upper joint is meshed with the second female buckle of the central pipe, the second male buckle of the internal connection pipe is meshed with the third female buckle of the central pipe, and the fourth female buckle; the push cylinder is sleeved outside the central tube and is fixed through a seat seal pin; the sealing rings comprise a first sealing ring and a second sealing ring, the first sealing ring is arranged between the central pipe and the push cylinder, and the second sealing ring is arranged between the central pipe and the inner connecting pipe; the upper part of the central tube is provided with a liquid flow pressure transfer hole, the lower part of the central tube is provided with a first pressure transfer hole, the lower part of the push cylinder is provided with a second pressure transfer hole, the upper part of the inner connecting tube is provided with a third pressure transfer hole, and the first pressure transfer hole, the second pressure transfer hole and the third pressure transfer hole are all arranged on the same axis and have the same aperture; and a ball seat matched with the steel ball is arranged at the top of the inner connecting pipe.
The above technical solution can be further optimized as follows:
the contact surface of the push cylinder and the liquid flow pressure transmission hole of the central tube is an inclined surface which inclines downwards and inwards.
And an annular bulge for supporting the bottom of the central tube is arranged below the second male buckle of the inner connecting tube.
The number of the seat seal pins is at least 2.
The seat seal pin is a steel pin.
The sealing ring also comprises a third sealing ring arranged between the central pipe and the push cylinder.
And the first sealing ring, the second sealing ring and the third sealing ring are all O-shaped sealing rings.
The O-shaped sealing ring is made of rubber.
The rubber is butadiene acrylonitrile rubber.
The bridge plug is a slip type bridge plug and comprises a lower slip, a lower slip and a rubber cylinder.
Compared with the prior art, the utility model discloses mainly have following showing technological effect:
1. the method has the advantages that one-time drilling and cement injection are carried out while releasing the bridge plug for sealing the well, one-time drilling of bridge plug plugging and cement injection construction is successfully realized, the construction link is simplified, and the time for plugging the bridge plug and cement injection construction is effectively shortened.
2. The construction efficiency of on-site bridge plug plugging and cement injection is improved, the construction and production cost is effectively reduced, and the method has remarkable economic benefit.
3. The labor intensity of constructors is reduced, and good social benefits are achieved.
4. Reasonable structure and simple operation.
5. Has good popularization and application value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the pusher of FIG. 1 in a downward position;
in the figure: 1-upper connector, 2-second female buckle, 3-central tube, 4-seat seal pin, 5-push cylinder, 6-first sealing ring, 7-liquid flow pressure transmission hole, 8-steel ball, 9-second sealing ring, 10-third sealing ring, 11-first pressure transmission hole, 12-second pressure transmission hole, 13-third female buckle, 14-inner connecting tube, 15-annular bulge, 16-fourth female buckle, 17-bridge plug breaking bolt, 18-third male buckle, 19-second male buckle, 20-third pressure transmission hole, 21-first male buckle and 22-first female buckle.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings.
Example 1
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
Example 2
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
Example 3
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
Example 4
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
Example 5
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
Example 6
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
The sealing ring further comprises a third sealing ring 10 arranged between the central tube 3 and the push cylinder 5 so as to ensure the sealing integrity between the central tube 3 and the push cylinder 5. The sealing ring is used for sealing the pressure relief channel and ensuring that hydraulic pressure effectively acts on the push cylinder 5.
Example 7
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
The sealing ring further comprises a third sealing ring 10 arranged between the central tube 3 and the push cylinder 5 so as to ensure the sealing integrity between the central tube 3 and the push cylinder 5. The sealing ring is used for sealing the pressure relief channel and ensuring that hydraulic pressure effectively acts on the push cylinder 5.
The first sealing ring 6, the second sealing ring 9 and the third sealing ring 10 are all O-shaped sealing rings so as to be matched with the pipe shape, and a good sealing effect is achieved.
Example 8
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
The sealing ring further comprises a third sealing ring 10 arranged between the central tube 3 and the push cylinder 5 so as to ensure the sealing integrity between the central tube 3 and the push cylinder 5. The sealing ring is used for sealing the pressure relief channel and ensuring that hydraulic pressure effectively acts on the push cylinder 5.
The first sealing ring 6, the second sealing ring 9 and the third sealing ring 10 are all O-shaped sealing rings so as to be matched with the pipe shape, and a good sealing effect is achieved.
The O-shaped sealing ring is made of rubber.
Example 9
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
The sealing ring further comprises a third sealing ring 10 arranged between the central tube 3 and the push cylinder 5 so as to ensure the sealing integrity between the central tube 3 and the push cylinder 5. The sealing ring is used for sealing the pressure relief channel and ensuring that hydraulic pressure effectively acts on the push cylinder 5.
The first sealing ring 6, the second sealing ring 9 and the third sealing ring 10 are all O-shaped sealing rings so as to be matched with the pipe shape, and a good sealing effect is achieved.
The O-shaped sealing ring is made of rubber.
The rubber is nitrile rubber, so that the advantages of good oil resistance, good wear resistance, good air tightness, aging resistance and low cost are fully exerted.
Example 10
See fig. 1 and 2. A bridge plug releasing device capable of injecting ash comprises an upper connector 1, a central pipe 3, a push cylinder 5, an inner connecting pipe 14, a bridge plug breaking bolt 17, a seat seal pin 4, a seal ring and a steel ball 8. The upper part of the upper joint 1 is provided with a first female buckle 22 connected with the lower part of an oil pipe, the lower part of the upper joint is provided with a first male buckle 21, the upper part of the central pipe 3 is provided with a second female buckle 2, the lower part of the central pipe is provided with a third female buckle 13, the middle part of the inner connecting pipe 14 is provided with a second male buckle 19, the lower part of the inner connecting pipe 14 is provided with a fourth female buckle 16, the upper part of the bridge plug breaking bolt 17 is provided with a third male buckle 18 and the lower part of the bridge plug is connected with a bridge plug, the first male buckle 21 of the upper joint 1 is meshed with the second female buckle 2 of the central pipe 3, the second male buckle 19 of the inner connecting pipe 14 is meshed with the third female buckle 13 of the central pipe 3, and the fourth female buckle 16 of the inner. The push cylinder 5 is sleeved outside the central tube 3 and fixed through the seat seal pin 4. The sealing ring comprises a first sealing ring 6 and a second sealing ring 9, the first sealing ring 6 is arranged between the central pipe 3 and the push cylinder 5, and the second sealing ring 9 is arranged between the central pipe 3 and the inner connecting pipe 14. The upper part of the central tube 3 is provided with a liquid flow pressure transfer hole 7, the lower part is provided with a first pressure transfer hole 11, the lower part of the push cylinder 5 is provided with a second pressure transfer hole 12, the upper part of the inner connecting tube 14 is provided with a third pressure transfer hole 20, and the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20 are all on the same axis and have the same aperture. The top of the inner connecting pipe 14 is provided with a ball seat matched with the steel ball 8.
The contact surface of the push tube 5 and the liquid flow pressure transmission hole 7 of the central tube 3 is an inclined surface inclined inward downward, so that the liquid flow pressure of the central tube 3 can more smoothly push the push tube 5 to move downward.
The inner connecting pipe 14 is provided with an annular bulge 15 which is arranged below the second male buckle 19 and used for supporting the bottom of the central pipe 3, and the design ensures that the inner connecting pipe 14 is firmly combined with the central pipe 3.
The number of the seat seal pins 4 is at least 2, so that the push cylinder 5 is more symmetrically and reliably fixed outside the central tube 3.
The seat seal pin 4 is made of steel pins to ensure enough strength.
The sealing ring further comprises a third sealing ring 10 arranged between the central tube 3 and the push cylinder 5 so as to ensure the sealing integrity between the central tube 3 and the push cylinder 5. The sealing ring is used for sealing the pressure relief channel and ensuring that hydraulic pressure effectively acts on the push cylinder 5.
The first sealing ring 6, the second sealing ring 9 and the third sealing ring 10 are all O-shaped sealing rings so as to be matched with the pipe shape, and a good sealing effect is achieved.
The O-shaped sealing ring is made of rubber.
The rubber is nitrile rubber, so that the advantages of good oil resistance, good wear resistance, good air tightness, aging resistance and low cost are fully exerted.
The bridge plug is a slip type bridge plug and comprises a lower slip, a lower slip and a rubber cylinder.
The use method of the device is as follows:
1. connecting tools and descending a well: the fourth female buckle 16 at the lower part of the inner connecting pipe 14 is connected with a bridge plug breaking bolt 17, and the bridge plug breaking bolt 17 is connected with a bridge plug. The upper joint 1 is connected with an oil pipe; and after the connection is finished, the well is conveyed by an oil pipe to a designed well depth position. When the oil jacket is lowered, the pressure of the oil jacket can be balanced through the first pressure transmission hole 11, the second pressure transmission hole 12 and the third pressure transmission hole 20.
2. Setting and releasing: after the bridge plug is lowered to the designed seat sealing position, a steel ball 8 is thrown from a well mouth to the upper part of an inner connecting pipe 14; the oil pipe is pressurized, the pressure is transmitted through a lateral liquid flow pressure transmission hole 7 at the upper part of the central pipe 3 and acts on the inner plane of the push cylinder 5, and the push cylinder 5 is pushed to move downwards to shear the seat seal pin 4 (see figure 2); the push cylinder 5 downwards extrudes an upper slip of the bridge plug connected below the inner connecting pipe 14, and the upper slip is broken and anchored on the inner wall of the casing pipe; and then the pressure of the oil pipe is maintained, the oil pipe is lifted, the inner connecting pipe 14 drives the bridge plug to move upwards by pulling the bridge plug breaking bolt 17 through lifting, the pushing cylinder 5 extrudes the lower slip and the rubber cylinder, the lower slip is broken, the inner wall of the casing is anchored, and the rubber cylinder deforms to seal the annular space. When the lifting force of the inner connecting pipe 14 rises to a certain value, the bridge plug breaking bolt 17 is broken, and the bridge plug releasing device is separated from the bridge plug, thereby completing the releasing operation.
3. Injecting ash: after the bridge plug is released, the structure of the bridge plug releasing device is changed into the structure shown in fig. 2, the steel ball 8 blocks the lower channels of the first pressure transfer hole 11, the second pressure transfer hole 12 and the third pressure transfer hole 20, the liquid flow pressure transfer hole 7 in the upper side of the central tube 3 is opened, and the oil sleeve annulus is communicated to form an open channel for injecting ash; and the cement enters the annular space through the oil pipe through the liquid flow pressure transfer hole 7, finally falls to the upper part of the bridge plug, and is solidified to seal the shaft together with the bridge plug.
Therefore, through the structural design of the bridge plug release device, the bridge plug releasing and cement injection construction can be completed by one drill, and the oil well plugging construction efficiency is improved.
Claims (10)
1. The utility model provides a can annotate grey formula bridging plug release which characterized in that: the device comprises an upper joint, a central pipe, a push cylinder, an inner connecting pipe, a bridge plug breaking bolt, a seat seal pin, a seal ring and a steel ball; the upper part of the upper joint is provided with a first female buckle connected with the lower part of the oil pipe, the lower part of the upper joint is provided with a first male buckle, the upper part of the central pipe is provided with a second female buckle, the lower part of the central pipe is provided with a third female buckle, the middle part of the internal connection pipe is provided with a second male buckle, the lower part of the internal connection pipe is provided with a fourth female buckle, the upper part of the bridge plug breaking bolt is provided with a third male buckle, the lower part of the bridge plug breaking bolt is connected with the bridge plug, the first male buckle of the upper joint is meshed with the second female buckle of the central pipe, the second male buckle of the internal connection pipe is meshed with the third female buckle of the central pipe, and the fourth female buckle; the push cylinder is sleeved outside the central tube and is fixed through a seat seal pin; the sealing rings comprise a first sealing ring and a second sealing ring, the first sealing ring is arranged between the central pipe and the push cylinder, and the second sealing ring is arranged between the central pipe and the inner connecting pipe; the upper part of the central tube is provided with a liquid flow pressure transfer hole, the lower part of the central tube is provided with a first pressure transfer hole, the lower part of the push cylinder is provided with a second pressure transfer hole, the upper part of the inner connecting tube is provided with a third pressure transfer hole, and the first pressure transfer hole, the second pressure transfer hole and the third pressure transfer hole are all arranged on the same axis and have the same aperture; and a ball seat matched with the steel ball is arranged at the top of the inner connecting pipe.
2. A cementable bridge plug release device as recited in claim 1, wherein: the contact surface of the push cylinder and the liquid flow pressure transmission hole of the central tube is an inclined surface which inclines downwards and inwards.
3. A cementable bridge plug release device as recited in claim 2, wherein: and an annular bulge for supporting the bottom of the central tube is arranged below the second male buckle of the inner connecting tube.
4. A cementable bridge plug release device as recited in claim 3, wherein: the number of the seat seal pins is at least 2.
5. An injectable ash bridge plug release device as defined in claim 4 wherein: the seat seal pin is a steel pin.
6. An injectable ash bridge plug release device as defined in claim 5 wherein: the sealing ring also comprises a third sealing ring arranged between the central pipe and the push cylinder.
7. An injectable ash bridge plug release device as defined in claim 6 wherein: and the first sealing ring, the second sealing ring and the third sealing ring are all O-shaped sealing rings.
8. An injectable ash bridge plug release device as defined in claim 7 wherein: the O-shaped sealing ring is made of rubber.
9. An injectable ash bridge plug release device as defined in claim 8 wherein: the rubber is butadiene acrylonitrile rubber.
10. A cementable bridge plug release device as recited in claim 9, wherein: the bridge plug is a slip type bridge plug and comprises a lower slip, a lower slip and a rubber cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476332.8U CN212027738U (en) | 2020-04-03 | 2020-04-03 | Can annotate grey formula bridging plug release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476332.8U CN212027738U (en) | 2020-04-03 | 2020-04-03 | Can annotate grey formula bridging plug release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212027738U true CN212027738U (en) | 2020-11-27 |
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ID=73491311
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020476332.8U Expired - Fee Related CN212027738U (en) | 2020-04-03 | 2020-04-03 | Can annotate grey formula bridging plug release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212027738U (en) |
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2020
- 2020-04-03 CN CN202020476332.8U patent/CN212027738U/en not_active Expired - Fee Related
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