CN112855066B - From soluble bridging plug of taking fracturing ball - Google Patents
From soluble bridging plug of taking fracturing ball Download PDFInfo
- Publication number
- CN112855066B CN112855066B CN202110006642.2A CN202110006642A CN112855066B CN 112855066 B CN112855066 B CN 112855066B CN 202110006642 A CN202110006642 A CN 202110006642A CN 112855066 B CN112855066 B CN 112855066B
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- rod
- connecting flange
- jacking
- cone
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 70
- 239000002131 composite material Substances 0.000 claims abstract description 54
- 230000007704 transition Effects 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 5
- 241000532412 Vitex Species 0.000 claims description 2
- 235000001667 Vitex agnus castus Nutrition 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 238000011084 recovery Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003721 gunpowder Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to the technical field of oilfield downhole tools and discloses a soluble bridge plug with a fracturing ball, which comprises a seat sealing sleeve, wherein one end of the seat sealing sleeve is movably connected with a first jacking cone, the surface of one end of the first jacking cone is clamped with a sealing composite cylinder, the inner part of one end of the sealing composite cylinder is clamped with a second jacking cone, and the inner part of one end of the second jacking cone is fixedly sleeved with an anti-falling joint. According to the invention, the release rod non-recovery operation is carried out in the sealing operation process of the device through the rod-ball integrated structure consisting of the positioning screw block, the hand-losing rod, the fracturing ball and the first connecting flange, so that the fracturing ball is directionally sleeved to the port at one end of the first jacking cone, the use mode that the fracturing ball of the traditional device is automatically combined with the port at one end of the bridge plug body is replaced, the control of process workers on the movement of the fracturing ball is increased, and the hidden dangers of dislocation or untight sealing and the like are eliminated.
Description
Technical Field
The invention relates to the technical field of oilfield downhole tools, in particular to a soluble bridge plug with a fracturing ball.
Background
Shale gas is taken as a typical unconventional oil and gas reservoir resource, has the characteristics of low porosity, extremely low matrix permeability and the like, the implementation of staged fracturing modification of a horizontal well at present becomes a key technology for realizing high-efficiency development of the shale gas reservoir, and in the staged fracturing modification process of the horizontal well, the staged fracturing technologies of the shale gas and water well, such as bridge plug/ball seat + clustering perforation combination, casing cementing sliding sleeves and the like, point out that the seriation research of a drillable composite bridge plug, the technical attack of a soluble tool and the pilot research of a wireless intelligent sliding sleeve tool are taken as key attack directions, wherein the soluble bridge plug is one of products developed in the key attack directions, but the existing soluble bridge plug still has some problems to be solved in the actual use process, mainly the fracturing ball in the existing soluble bridge plug is taken as the final sealing part, and is usually thrown into a fracturing channel after a sealing rubber barrel seals the fracturing channel, the self-contained fracturing ball soluble bridge plug is automatically combined with a port at one end of a bridge plug body, the control degree of workers in the process is low, and potential hazards of dislocation or untight sealing exist.
Disclosure of Invention
The invention provides a soluble bridge plug with a fracturing ball, which solves the problems in the background technology.
The invention provides the following technical scheme: a soluble bridge plug with a fracturing ball comprises a seat sealing sleeve, wherein one end of the seat sealing sleeve is movably connected with a first jacking cone, the surface of one end of the first jacking cone is connected with a sealing composite cylinder in a clamping manner, the inside of one end of the sealing composite cylinder is connected with a second jacking cone in a clamping manner, one end of the second jacking cone is fixedly sleeved with an anti-drop joint, the inner sides of the top and the bottom of the anti-drop joint are respectively provided with a abdication threaded hole, the insides of the two abdication threaded holes are respectively connected with a pressure release composite piece in a threaded manner, one end of the pressure release composite piece penetrates through the inside of the anti-drop joint, the inner side of one end of the anti-drop joint is connected with a positioning screw block in a threaded manner, one side of the positioning screw block is fixedly connected with a hand dropping rod, the hand dropping rod penetrates through the insides of the second jacking cone, the sealing composite cylinder and the first jacking cone and is movably sleeved with the insides of the first jacking cone, the sealing composite cylinder and the sealing cone, the fixed surface of losing hand pole one end cup joints and has had the fracturing ball, and the first flange of terminal surface fixedly connected with of releasing hand pole one end, one side swing joint of first flange has the second flange, threaded connection has the closure piece between second flange and the first flange, the side of second flange one side is provided with the top and moves the pole, the fixed dish of pole one end fixedly connected with is moved on the top, the fixed cover of fixed disk is cup jointed in the telescopic inside of seat seal, well core rod has been cup jointed in the inside activity of fixed disk, well core rod's one end and the other end fixed connection of losing hand pole, the fixed cover in inside of well core rod other end has cup jointed transition loop bar, the fixed cover in inside of transition loop bar one end has cup jointed seat seal pole.
Carefully selecting, the inside of the sealed composite cylinder comprises a sealed cylinder body, the top surfaces of the two ends of the sealed cylinder body are provided with thread teeth, and the inner walls of the two ends of the sealed cylinder body are provided with first chaste trees.
And carefully selecting, wherein a third chaste tooth and a second chaste tooth are respectively arranged on the surface of the inclined structure at one end of the second top pressing cone and the surface of the inclined structure at one end of the first top pressing cone, and the third chaste tooth at one end of the second top pressing cone and the second chaste tooth at one end of the first top pressing cone are respectively clamped with the first chaste teeth on the surfaces of the two ends of the sealing composite cylinder.
The pressure release composite piece is characterized in that a first threaded rod is arranged inside the pressure release composite piece, air holes are formed in the first threaded rod, the depth value of each air hole is equal to four fifths of the length value of the first threaded rod, and a first cross groove is formed in one end of the first threaded rod.
Carefully, the inside of closure is including the second threaded rod, and the inside of the first flange of threaded connection and second flange respectively in the both ends of second threaded rod, the one end of second threaded rod is opened and is equipped with the second cross-shaped groove.
Carefully, the inboard in second flange middle part all opens with the inboard in first flange middle part and is equipped with a first groove of stepping down, and two first grooves of stepping down align each other, two the inside in first groove of stepping down is provided with miniature pressure sensor, one side of miniature pressure sensor is fixed to be cup jointed at the first inslot portion of stepping down of second flange one side, the side of miniature pressure sensor opposite side closely laminates with the first inslot wall of stepping down of first flange one side.
And the selected materials are composed of a first connecting flange, a second connecting flange, a top moving rod and a locking piece, wherein the central points of the two locking pieces are positioned on the same straight line, the length of the top moving rod is greater than the sum of the thickness values of the first connecting flange and the second connecting flange, and the hardness value of the materials composed of the top moving rod is greater than the hardness value of the materials composed of the locking pieces.
Carefully, the inside of fixed disk is seted up the second that runs through and is stepped down the groove, and one side in the second groove of stepping down is provided with the third groove of stepping down, the third groove of stepping down is seted up in the inside of second flange opposite side to link up the first inslot portion of stepping down of second flange one side.
And the first connecting flange, the sealing composite barrel, the first jacking cone, the second jacking cone, the anti-drop joint, the positioning screw block, the throwing rod and the fracturing ball are all made of soluble metal materials, and the length value of the throwing rod is greater than the sum of the length values of the first jacking cone, the sealing composite barrel, the second jacking cone and the anti-drop joint.
The invention has the following beneficial effects:
1. according to the invention, the releasing rod non-recovery operation is carried out by the rod-ball integrated structure consisting of the positioning screw block, the releasing rod, the fracturing ball and the first connecting flange in the sealing operation process of the device, so that the fracturing ball is directionally sleeved to the port at one end of the first jacking cone, the use mode that the fracturing ball of the traditional device is automatically combined with the port at one end of the bridge plug body is replaced, the control of process workers on the movement of the fracturing ball is increased, and the hidden dangers of dislocation or untight sealing and the like are eliminated.
2. According to the invention, two first yielding grooves are used as yielding spaces by the miniature pressure sensor, and the miniature pressure sensor is matched with a detachable locking structure consisting of the second connecting flange, the first connecting flange and the locking piece to be used together, so that a pressure signal between the second connecting flange and the first connecting flange can be transmitted to a specified instrument on the ground in real time, and the control of a worker on a fracturing ball and an integral device is further improved.
3. The sealing composite cylinder, the first jacking cone, the second jacking cone, the anti-drop joint, the positioning screw block, the handle losing rod, the fracturing ball and the first connecting flange are all made of soluble metal materials, so that the basic function of the traditional soluble bridge plug is realized, the structure of the releasing rod is changed from a recovery mode to a direct dissolution non-recovery mode, and structural interference in the use process of the automatic fracturing ball of the device is avoided.
4. According to the invention, the bottom of the first threaded rod in the pressure release composite part is pushed and cut by the positioning screw block in the pushing operation process of the seat sealing mechanism, so that a space is provided for the air holes in the pressure release composite part, the explosive gas of gunpowder arranged in the seat sealing mechanism is dredged to the outside, and the phenomenon that the internal pressure of the device is too high to cause partial structural damage is avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic front view of the structure of the present invention;
FIG. 3 is a schematic right side view of a second attachment flange of the present construction;
FIG. 4 is a schematic left side view of a second attachment flange of the present construction;
FIG. 5 is an enlarged schematic view of the invention at A in FIG. 1;
FIG. 6 is an enlarged schematic view of the invention at B in FIG. 3;
FIG. 7 is an enlarged schematic view of a structural pressure relief composite of the present invention.
In the figure: 1. a seat seal sleeve; 2. a first top pressing cone; 3. sealing the composite cylinder; 31. sealing the cylinder body; 32. thread teeth; 4. a second top pressing cone; 5. an anti-drop joint; 6. yielding threaded holes; 7. a pressure-release composite; 71. a first threaded rod; 72. air holes are formed; 73. a first cross recess; 8. positioning the screw block; 9. a hand lever is lost; 10. fracturing the ball; 11. a first connecting flange; 12. a second connecting flange; 13. a locking member; 131. a second threaded rod; 132. a second cross-shaped slot; 14. a first abdicating groove; 15. a miniature pressure sensor; 16. pushing the rod; 17. fixing the disc; 18. a center pole; 19. a transition loop bar; 20. A seat seal rod; 21. a second abdicating groove; 22. and a third abdicating groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a soluble bridge plug with a fracturing ball comprises a seat sleeve 1, a first top pressing cone 2 is movably connected to one end of the seat sleeve 1, a sealing composite cylinder 3 is clamped on the surface of one end of the first top pressing cone 2, a sealing cylinder 31 is arranged inside the sealing composite cylinder 3, threaded teeth 32 are arranged on the top surfaces of two ends of the sealing cylinder 31, first chases ratchet teeth are arranged on the inner walls of two ends of the sealing cylinder 31, the threaded teeth 32 are arranged on the top surfaces of two ends of the sealing cylinder 31, when the sealing composite cylinder 3 is expanded and expanded to seal a channel integrally, the connection strength between the sealing composite cylinder 3 and the channel is improved, a second top pressing cone 4 is clamped inside one end of the sealing composite cylinder 3, a third chases ratchet tooth and a second chases tooth are arranged on the surface of an inclined structure at one end of the second top pressing cone 4 and the surface of an inclined structure at one end of the first top pressing cone 2 respectively, a third thorn ratchet at one end of a second top pressing cone 4 and a second thorn ratchet at one end of a first top pressing cone 2 are respectively clamped with the first thorn ratchets on the surfaces of the two ends of the sealing compound cylinder 3, the third thorn ratchet of the second top pressing cone 4 and the second thorn ratchet of the first top pressing cone 2 are respectively clamped with the first thorn ratchets at the two ends of the sealing compound cylinder 3, the phenomenon that the sealing compound cylinder 3 shrinks after losing pressure can be effectively avoided, an anti-dropping joint 5 is fixedly sleeved in one end of the second top pressing cone 4, yielding threaded holes 6 are respectively formed in the top and the bottom of the anti-dropping joint 5, a pressure relief compound piece 7 is respectively connected in the two yielding threaded holes 6 in a threaded manner, a first threaded rod is arranged in the pressure relief compound piece of the sports shoe, air holes are formed in the first threaded rod, the depth value of the air holes of the sports shoe is equal to four fifths of the length value of the first threaded rod, one end of the first threaded rod of the sports shoe is provided with a first cross-shaped groove 73, the bottom of a first threaded rod 71 in the pressure release composite piece 7 is pushed and cut by a positioning screw block 8 in the pushing operation process of the seat sealing mechanism, a yielding space is provided for a vent hole 72 in the pressure release composite piece 7, gunpowder explosive gas arranged in the seat sealing mechanism is further dredged to the outside, partial structural damage caused by overlarge pressure in the device is avoided, one end of the pressure release composite piece 7 penetrates into an anti-drop joint 5, the inner side of one end of the anti-drop joint 5 is in threaded connection with the positioning screw block 8, one side of the positioning screw block 8 is fixedly connected with a throwing rod 9, the throwing rod 9 penetrates through the second jacking cone 4, the sealing composite barrel 3 and the inside of the first jacking cone 2 and is movably sleeved with the interiors of the three, a fracturing ball 10 is fixedly sleeved on the surface of one end of the throwing rod 9, the end face of one end of the releasing rod 9 is fixedly connected with a first connecting flange 11, the sealing composite cylinder 3, the first jacking cone 2, the second jacking cone 4, the anti-drop joint 5, the positioning screw block 8, the releasing rod 9 and the fracturing ball 10 are all made of soluble metal materials, the length value of the releasing rod 9 is greater than the sum of the length values of the first jacking cone 2, the sealing composite cylinder 3, the second jacking cone 4 and the anti-drop joint 5, the sealing composite cylinder 3, the first jacking cone 2, the second jacking cone 4, the anti-drop joint 5, the positioning screw block 8, the releasing rod 9, the fracturing ball 10 and the first connecting flange 11 are all made of soluble metal materials, the releasing rod structure is changed from a recovery mode to a direct dissolution non-recovery mode while the basic function of the traditional dissolvable bridge plug is realized, and further structural interference in the use process of the subsequent automatic fracturing ball 10 is avoided, one side of the first connecting flange 11 is movably connected with a second connecting flange 12, the inner side of the middle part of the second connecting flange 12 and the inner side of the middle part of the first connecting flange 11 are respectively provided with a first abdicating groove 14, the two first abdicating grooves 14 are aligned with each other, the interior of the two first abdicating grooves 14 is provided with a micro pressure sensor 15, one side of the micro pressure sensor 15 is fixedly sleeved in the interior of the first abdicating groove 14 on one side of the second connecting flange 12, the side surface of the other side of the micro pressure sensor 15 is tightly attached to the inner wall of the first abdicating groove 14 on one side of the first connecting flange 11, the micro pressure sensor 15 takes the two first abdicating grooves 14 as abdicating space, and can transmit a pressure signal between the second connecting flange 12 and the first connecting flange 11 to a designated instrument on the ground in real time after being matched with a detachable locking structure consisting of the second connecting flange 12, the first connecting flange 11 and the locking piece 13, the operator is promoted to control the fracturing ball 10 and the whole device, a locking piece 13 is in threaded connection between the second connecting flange 12 and the first connecting flange 11, a second threaded rod 131 is arranged inside the locking piece 13, two ends of the second threaded rod 131 are respectively in threaded connection with the first connecting flange 11 and the second connecting flange 12, one end of the second threaded rod 131 is provided with a second cross-shaped groove 132, the first connecting flange 11 and the second connecting flange 12 are fixedly connected together through the second threaded rod 131 inside the locking piece 13, the implementation of subsequent operation of pressure separation is facilitated, the side surface of one side of the second connecting flange 12 is provided with a jacking rod 16, the central points of the two locking pieces 13 of the central points of the two jacking rods 16 are on the same straight line, and the length value of the jacking rod 16 is greater than the sum of the thickness values of the first connecting flange 11 and the second connecting flange 12, the hardness value of the composition material of the top shift rod 16 is greater than that of the composition material of the locking piece 13, the fixing disc 17 and the top shift rod 16 move together with the seat seal sleeve 1 during the use of the device, and further push the second connecting flange 12 and the locking piece 13 inside the first connecting flange 11 out of the two, so that the second connecting flange 12 is separated from the first connecting flange 11, one end of the top shift rod 16 is fixedly connected with the fixing disc 17, the fixing disc 17 is internally provided with a through second abdicating groove 21, one side of the second abdicating groove 21 is provided with a third abdicating groove 22, the third abdicating groove 22 is arranged inside the other side of the second connecting flange 12 and penetrates through the inside of the first abdicating groove 14 on one side of the second connecting flange 12, the second abdicating groove 21 and the third abdicating groove 22 are matched with each other to provide abdicating space for the wire connection of the micro pressure sensor 15, the fixed disc 17 is fixedly sleeved in the seat sealing sleeve 1, the inside of the fixed disc 17 is movably sleeved with a central rod 18, one end of the central rod 18 is fixedly connected with the other end of the releasing rod 9, the inside of the other end of the central rod 18 is fixedly sleeved with a transition loop bar 19, and the inside of one end of the transition loop bar 19 is fixedly sleeved with a seat sealing rod 20.
The working principle is as follows: when in use, the assembled device is pumped to a set position in the channel by using the existing pumping mode according to the construction requirement, the gunpowder arranged in the other end of the seat sealing sleeve 1 is ignited after confirmation, the principle of the structural arrangement and the using process of the gunpowder part are the same as those of the prior art, the description is not repeated, so that the seat sealing sleeve 1 obtains the propelling power, the seat sealing sleeve 1 pushes and presses the first jacking cone body 2, the sealing composite barrel 3 and the second jacking cone body 4, the second jacking cone body 4 at the moment is matched with the first jacking cone body 2 to extrude the sealing composite barrel 3 under the action of the supporting rod structure consisting of the positioning screw block 8, the releasing rod 9, the central rod 18, the transition sleeve rod 19 and the seat sealing rod 20, and the sealing composite barrel 3 expands after receiving the relative pressure between the first jacking cone body 2 and the second jacking cone body 4, then the channel is sealed, and after the sealing composite cylinder 3 seals the channel, the thrust power of the seating sleeve 1 is not finished, the thrust power is continuously applied until the positioning screw block 8 is separated from the internal thread preset in one end of the anti-drop joint 5, and the positioning screw block 8 moves the port at the other end of the anti-drop joint 5, the moving process of the positioning screw block 8 cuts off the bottom end of the pressure-releasing composite piece 7 to provide a space for the vent hole 72 in the pressure-releasing composite piece 7, so that the explosive gas of gunpowder arranged in the seating mechanism is dredged to the outside, and the fixed disk 17 and the jacking rod 16 move together with the seating sleeve 1 in the pushing process of the seating sleeve 1, so that the second connecting flange 12 and the locking piece 13 in the first connecting flange 11 are pushed out of the two, so that the second connecting flange 12 is separated from the first connecting flange 11, then a series of seat sealing implementation components of the seat sealing sleeve 1, the seat sealing rod 20, the transition sleeve rod 19, the central rod 18, the jacking rod 16, the fixed disk 17 and the second connecting flange 12 are separated from the channel in a pumping mode, and the fracturing ball 10 and the releasing rod 9 are pushed by liquid in the channel to be in directional contact with a port at one end of the first jacking cone 2 for clamping connection, so that final sealing is realized.
Claims (1)
1. A from soluble bridge plug of taking fracturing ball, includes setting sleeve (1), its characterized in that: one end of the seat seal sleeve (1) is movably connected with a first jacking cone (2), the surface of one end of the first jacking cone (2) is clamped with a sealing composite cylinder (3), the inside of one end of the sealing composite cylinder (3) is clamped with a second jacking cone (4), one end of the second jacking cone (4) is fixedly sleeved with an anti-falling joint (5), the inner sides of the top and the bottom of the anti-falling joint (5) are respectively provided with a yielding threaded hole (6), the insides of the two yielding threaded holes (6) are respectively in threaded connection with a pressure release composite part (7), one end of the pressure release composite part (7) penetrates through the inside of the anti-falling joint (5), the inner side of one end of the anti-falling joint (5) is in threaded connection with a positioning screw block (8), one side of the positioning screw block (8) is fixedly connected with a hand throwing rod (9), and the hand throwing rod (9) penetrates through the second jacking cone (4), The sealing composite barrel (3) and the first jacking cone (2) are movably sleeved with the interiors of the sealing composite barrel, the fracturing ball (10) is fixedly sleeved on the surface of one end of the throwing rod (9), the end face of one end of the throwing rod (9) is fixedly connected with a first connecting flange (11), one side of the first connecting flange (11) is movably connected with a second connecting flange (12), a locking piece (13) is connected between the second connecting flange (12) and the first connecting flange (11) in a threaded manner, a jacking rod (16) is arranged on the side face of one side of the second connecting flange (12), one end of the jacking rod (16) is fixedly connected with a fixed disk (17), the fixed disk (17) is fixedly sleeved in the seat sealing sleeve (1), a central rod (18) is movably sleeved in the fixed disk (17), one end of the central rod (18) is fixedly connected with the other end of the throwing rod (9), a transition sleeve rod (19) is fixedly sleeved in the other end of the central rod (18), and a seat seal rod (20) is fixedly sleeved in the transition sleeve rod (19);
the sealing composite cylinder (3) comprises a sealing cylinder body (31) inside, the top surfaces of two ends of the sealing cylinder body (31) are provided with thread teeth (32), and the inner walls of two ends of the sealing cylinder body (31) are provided with first chaste trees;
a third ratchet tooth and a second ratchet tooth are respectively arranged on the surface of the inclined structure at one end of the second top pressing cone (4) and the surface of the inclined structure at one end of the first top pressing cone (2), and the third ratchet tooth at one end of the second top pressing cone (4) and the second ratchet tooth at one end of the first top pressing cone (2) are respectively clamped with the first ratchet teeth on the surfaces of the two ends of the sealing composite cylinder (3);
the pressure release composite piece (7) comprises a first threaded rod (71) inside, an air hole (72) is formed in the first threaded rod (71), the depth value of the air hole (72) is equal to four fifths of the length value of the first threaded rod (71), and a first cross groove (73) is formed in one end of the first threaded rod (71);
the inside of the locking part (13) comprises a second threaded rod (131), two ends of the second threaded rod (131) are respectively in threaded connection with the inside of the first connecting flange (11) and the inside of the second connecting flange (12), and one end of the second threaded rod (131) is provided with a second cross-shaped groove (132);
the inner side of the middle part of the second connecting flange (12) and the inner side of the middle part of the first connecting flange (11) are respectively provided with a first abdicating groove (14), the two first abdicating grooves (14) are aligned with each other, a micro pressure sensor (15) is arranged inside the two first abdicating grooves (14), one side of the micro pressure sensor (15) is fixedly sleeved inside the first abdicating groove (14) on one side of the second connecting flange (12), and the side surface of the other side of the micro pressure sensor (15) is tightly attached to the inner wall of the first abdicating groove (14) on one side of the first connecting flange (11);
the center points of the two locking pieces (13) are on the same straight line, the length value of the jacking rod (16) is greater than the sum of the thickness values of the first connecting flange (11) and the second connecting flange (12), and the hardness value of the composition material of the jacking rod (16) is greater than that of the locking pieces (13);
a second abdicating groove (21) is formed in the fixed disc (17) in a penetrating manner, a third abdicating groove (22) is formed in one side of the second abdicating groove (21), and the third abdicating groove (22) is formed in the other side of the second connecting flange (12) and penetrates into the first abdicating groove (14) in one side of the second connecting flange (12);
the anti-dropping composite pipe is characterized in that the sealing composite pipe (3), the first jacking cone (2), the second jacking cone (4), the anti-dropping joint (5), the positioning screw block (8), the releasing rod (9), the fracturing ball (10) and the first connecting flange (11) are all made of soluble metal materials, and the length value of the releasing rod (9) is greater than the sum of the length values of the first jacking cone (2), the sealing composite pipe (3), the second jacking cone (4) and the anti-dropping joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006642.2A CN112855066B (en) | 2021-01-05 | 2021-01-05 | From soluble bridging plug of taking fracturing ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006642.2A CN112855066B (en) | 2021-01-05 | 2021-01-05 | From soluble bridging plug of taking fracturing ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112855066A CN112855066A (en) | 2021-05-28 |
| CN112855066B true CN112855066B (en) | 2021-09-14 |
Family
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Family Applications (1)
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| CN202110006642.2A Active CN112855066B (en) | 2021-01-05 | 2021-01-05 | From soluble bridging plug of taking fracturing ball |
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| CN109252830A (en) * | 2018-11-21 | 2019-01-22 | 四川鹏成石油技术开发有限公司 | Presetting system ceramic throttling device and its implementation |
| CN109519146A (en) * | 2018-12-26 | 2019-03-26 | 四川长宁天然气开发有限责任公司 | A kind of solvable bridge plug of small size |
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| Publication number | Publication date |
|---|---|
| CN112855066A (en) | 2021-05-28 |
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