CN120759559A - A monitorable sealed soluble bridge plug structure - Google Patents
A monitorable sealed soluble bridge plug structureInfo
- Publication number
- CN120759559A CN120759559A CN202511116590.9A CN202511116590A CN120759559A CN 120759559 A CN120759559 A CN 120759559A CN 202511116590 A CN202511116590 A CN 202511116590A CN 120759559 A CN120759559 A CN 120759559A
- Authority
- CN
- China
- Prior art keywords
- push
- guide
- ring
- piston cylinder
- plate
- 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.)
- Granted
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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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
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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
-
- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
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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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/08—Down-hole devices using materials which decompose under well-bore conditions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Pipe Accessories (AREA)
Abstract
本发明公开了一种可监测的密封可溶桥塞结构，涉及可溶桥塞技术领域，包括推筒、丢手杆、中心管、封堵管，所述推环靠近锥形筒锥形斜面的一侧设置有锁位卡瓦，所述推环的两侧设置有导向止退件。本发明通过设置导向止退件，当推筒推动推环进行移动时注入第二活塞筒内部的液体便会对第二活塞块进行挤压，在此过程中伸缩杆、伸缩弹簧进行收缩，以此来使伸缩弹簧进行弹性储能，当导向板与置位槽分离时，导向板向着远离封堵管圆心的方向进行摆动，如此便可使得导向板远离L型推板的一端便会与管道内壁接触，当后续可溶球进入管道内时，可溶球便会在导向板的导向作用下精准的落至封堵管的内部，如此以此来提高可溶球进入封堵管内的精准度。
The present invention discloses a monitorable sealed soluble bridge plug structure, which relates to the technical field of soluble bridge plugs, including a push cylinder, a release lever, a central tube, and a sealing tube. The push ring is provided with a locking slip on one side close to the tapered slope of the tapered cylinder, and guide stoppers are provided on both sides of the push ring. The present invention provides a guide stopper. When the push cylinder pushes the push ring to move, the liquid injected into the second piston cylinder will squeeze the second piston block. During this process, the telescopic rod and the telescopic spring contract, so that the telescopic spring can store energy elastically. When the guide plate is separated from the positioning groove, the guide plate swings in a direction away from the center of the sealing tube, so that the end of the guide plate away from the L-shaped push plate can contact the inner wall of the pipe. When the soluble ball enters the pipe later, the soluble ball will fall accurately into the inside of the sealing tube under the guidance of the guide plate, thereby improving the accuracy of the soluble ball entering the sealing tube.
Description
Technical Field
The invention relates to the technical field of soluble bridge plugs, in particular to a sealing soluble bridge plug structure capable of being monitored.
Background
In the development of shale gas, the shale gas well needs to be subjected to staged fracturing, and a bridge plug plays an important role in plugging the shale gas well. In shale gas development at present, mainly adopt soluble bridging plug, soluble bridging plug is made by soluble metal and degradable rubber, with conventional setting tool cooperation, pump feeding well realizes the segmentation fracturing, can directly try oil and put into production after accomplishing the fracturing, wherein monitor the pressure between two soluble bridging plugs through pressure sensor in the fracturing process to judge the leakproofness between the adjacent soluble bridging plugs, later soluble bridging plug then quick dissolve under flowing back effect, need not salvage, need not bore the mill, under the condition of not having any intervention measure, be convenient for production and later stage measure construction.
After the soluble bridge plug is placed, the soluble ball is required to be thrown into one end of the bridge plug, the intra-well division is realized through the contact between the soluble ball and the plugging tube, but the movement of the push ring and the expansion of the rubber barrel are realized through the cooperation of the push barrel and the hand throwing rod in the plugging process, at the moment, the diameter of the plugging tube at one end of the central tube is smaller than the diameter of the inner wall of the push barrel, when the push barrel is pulled out after the expansion of the rubber barrel is finished, a gap is reserved between the outer wall of the plugging tube and the inner wall of a pipeline in the well, at the moment, the collision between the soluble ball and the plugging tube is caused when the soluble ball is thrown in, and meanwhile, the abutting accuracy between the soluble ball and the plugging tube is also influenced.
Disclosure of Invention
The invention aims to provide a sealing soluble bridge plug structure capable of being monitored in order to solve the problem that the butt joint effect between a soluble ball and a plugging tube is poor.
The invention provides a technical scheme that the sealing soluble bridge plug structure comprises a push cylinder, a hand throwing rod, a central tube and a plugging tube, wherein the push cylinder and the hand throwing rod are connected through an external setting tool, the plugging tube is connected with the hand throwing rod, the central tube is fixedly arranged at one end of the plugging tube, a conical cylinder is arranged on the outer wall of the central tube, a sealing rubber cylinder positioned at one side of the conical cylinder is arranged on the central tube, a push ring contacted with the push cylinder is arranged at the outer side of the telescopic central tube, a locking slip is arranged at one side of the push ring close to the conical inclined surface of the conical cylinder, and guiding retaining pieces are arranged at two sides of the push ring and used for guiding a soluble ball and unidirectional locking the locking slip;
The guide retaining piece comprises a splice plate arranged on one side of the conical barrel, which is close to the push ring, one side of the splice plate is provided with a movable rod penetrating through the push ring, one end of the movable rod is provided with a first piston block, one side of the push ring, which is away from the locking slip, is fixedly connected with a first piston barrel, the first piston block is positioned on the inner side of the first piston barrel and is in sliding connection with the first piston barrel, one end of the first piston barrel, which is away from the push ring, is provided with a transition bin, and the inner side of the transition bin is provided with a clamping unit.
As a still further scheme of the invention, a guide port is arranged at one end of the transition bin, which is close to the first piston cylinder, and the transition bin and the first piston cylinder are communicated through the guide port.
The guide retaining piece further comprises a first corrugated expansion pipe arranged at one end of the transition bin far away from the first piston cylinder, a locking positioning ring connected with the outer wall of the central pipe is arranged at one end of the first corrugated expansion pipe, a guide pipe penetrating through the other side of the locking positioning ring is arranged at one side of the locking positioning ring, a second piston cylinder is connected to one side of the locking positioning ring far away from the first corrugated expansion pipe, the first corrugated expansion pipe and the second piston cylinder are in a communicating state through the guide pipe, a second piston block is connected to the inside of the second piston cylinder in a sliding mode, a telescopic rod extending to the outer side of the second piston cylinder is connected to one side of the second piston block, a movable ring is fixedly connected to one end of the telescopic rod, an L-shaped push plate is arranged on the outer wall of the movable ring, a setting groove is formed in the inside of the plugging pipe, one end of the L-shaped push plate extends to the inside of the setting groove, one end of the L-shaped push plate is rotationally connected with a guide plate through a rotating shaft, the outer side of the guide plate, which is connected with the L-shaped push plate is in a communicating state through the guide pipe, a torsion spring is connected to the outer side of the L-shaped push plate, and a telescopic spring is arranged inside the telescopic rod.
As a still further scheme of the invention, the telescopic length of the first corrugated telescopic pipe is equal to the moving distance of the first piston cylinder.
As a still further proposal of the invention, a plurality of L-shaped pushing plates are arranged, and the L-shaped pushing plates are distributed equidistantly along the circle center of the movable ring.
As a still further proposal of the invention, the circle center of the plugging tube is coaxial with the circle center of the movable ring, and the locking positioning ring is coaxial with the circle center of the push ring.
As a still further scheme of the invention, the clamping unit comprises a clamping plate arranged on the inner wall of the transition bin, the bottom of the clamping plate is rotationally connected with a baffle plate through a rotating shaft, the outer wall of the transition bin is provided with a positioning frame, the bottom of the positioning frame is inserted with a guide rod extending to the inner side of the transition bin, one end of the guide rod, which is far away from the center of the circle of the transition bin, is fixedly provided with a limiting plate, the other end of the guide rod is provided with a trapezoid clamping block positioned at the inner side of the transition bin, the bottom of the trapezoid clamping block is connected with a second corrugated telescopic pipe connected with the inner wall of the transition bin, and the second corrugated telescopic pipe is positioned at the outer side of the guide rod.
As a still further proposal of the invention, the diameter of the baffle plate is larger than that of the diversion opening, and a sealing gasket composed of soluble rubber is arranged on one side of the baffle plate close to the diversion opening.
As a still further proposal of the invention, the top of the positioning frame is provided with a through hole with the diameter larger than the guide rod and smaller than the diameter of the inner wall of the second corrugated expansion pipe.
As a still further proposal of the invention, when the baffle plate is in a vertical state, one side of the trapezoid clamping block close to the baffle plate is level with one side of the baffle plate far away from the guide port.
Compared with the prior art, the invention has the beneficial effects that:
1. Through setting up the direction stopping piece, pour into the liquid in the second piston cylinder and extrude the second piston block when pushing away the push ring and remove, the telescopic link, the telescopic spring shrink in this process, so make the telescopic spring carry on the elasticity energy storage, when pushing away the tube drawing out the pipeline, the shutoff pipe can lose the shielding of pushing away the tube, the telescopic spring just can drive the expansion ring and move towards the shutoff pipe at this moment, when deflector and setting tank separate, the deflector swings towards the direction away from the centre of a circle of shutoff pipe, so can make the one end that the deflector kept away from L-shaped push plate contact with the inner wall of the pipeline, when the soluble ball of follow-up gets into the pipeline, the soluble ball just can accurately fall to the inside of shutoff pipe under the guide effect of deflector, so improve the accuracy that the soluble ball gets into the shutoff pipe;
2. through setting up screens unit, carry out the staged fracturing before pushing away the section of thick bamboo to the well and promote the solution of push ring removal in the in-process first piston cylinder can get into the transition storehouse through the water conservancy diversion mouth, the baffle just can take place the swing under the impact of aqueous solution this moment, baffle just can swing when first piston cylinder inside and transition storehouse internal pressure balance and restore, the baffle just can shelter from the water conservancy diversion mouth this moment, because the pressure between the adjacent bridging plug increases when carrying out staged fracturing to the well, so alright make trapezoidal screens piece remove towards transition storehouse centre of a circle direction, so make one side of trapezoidal screens piece and baffle keep away from the laminating mutually of one side of water conservancy diversion mouth, simultaneously the flexible pipe of second ripple stretches, so alright prevent that the baffle from taking place the swing through trapezoidal screens piece, just can be in sealing state between baffle and the first piston piece this moment, so alright make first piston cylinder unable to remove along the movable rod, thereby prevent to push ring emergence removal, further improved the stability of locking position, ensure that the seal gum piece is kept close to the sleeve inner wall after sitting down, form reliable seal.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic illustration of the connection of a push ring to a occlusion tube of the present invention;
FIG. 3 is a schematic view of the connection of the cone to the locking collar of the present invention;
FIG. 4 is a schematic view of the internal structure of the plugging tube according to the present invention;
FIG. 5 is an enlarged view of FIG. 4A in accordance with the present invention;
FIG. 6 is a schematic illustration of the connection of a first piston cylinder and a second piston cylinder according to the present invention;
FIG. 7 is a schematic illustration of the connection of a first bellows to a second piston cylinder of the present invention;
FIG. 8 is a schematic view of the internal structure of the transition bin of the invention;
fig. 9 is a schematic diagram of the connection between the transition bin and the trapezoidal clamping block.
The hydraulic pressure type hydraulic pressure control device comprises a pushing cylinder 1, a pushing cylinder 2, a releasing rod 3, a pushing ring 4, a locking slip, a conical cylinder 5, a sealing rubber cylinder 6, a central tube 7, a plugging tube 8, a plugging tube 9, a movable ring 10, an L-shaped push plate 11, a locking positioning ring 12, a first piston cylinder 13, a splice plate 14, a movable rod 15, a first piston block 16, a transition bin 17, a first corrugated telescopic tube 18, a guide plate 19, a setting groove 20, a torsion spring 21, a telescopic rod 22, a second piston cylinder 23, a telescopic spring 24, a second piston block 25, a guide tube 26, a clamping plate 27, a baffle plate 28, a trapezoidal clamping block 29, a second corrugated telescopic tube 30, a positioning frame 31, a limiting plate 32, a guide rod 33 and a guide orifice.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or communicate between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present invention will be described in accordance with its entire structure.
Example 1
Referring to fig. 1-9, in the embodiment of the invention, a monitorable sealed soluble bridge plug structure comprises a push cylinder 1, a releasing rod 2, a central tube 7 and a plugging tube 8, wherein the push cylinder 1 and the releasing rod 2 are connected through an external setting tool, the plugging tube 8 is connected with the releasing rod 2, the central tube 7 is fixedly arranged at one end of the plugging tube 8, a conical cylinder 5 is arranged on the outer wall of the central tube 7, a sealing rubber cylinder 6 positioned at one side of the conical cylinder 5 is arranged on the central tube 7, a push ring 3 contacted with the push cylinder 1 is arranged at the outer side of the telescopic central tube 7, a locking slip 4 is arranged at one side of the push ring 3 close to a conical inclined surface of the conical cylinder 5, and guiding and retaining pieces are arranged at two sides of the push ring 3 and used for guiding a soluble ball and unidirectional locking the locking slip 4;
The guide retaining piece comprises a splice plate 13 arranged on one side of the conical barrel 5 close to the push ring 3, a movable rod 14 penetrating through the push ring 3 is arranged on one side of the splice plate 13, a first piston block 15 is arranged at one end of the movable rod 14, a first piston barrel 12 is fixedly connected to one side of the push ring 3 away from the locking slip 4, the first piston block 15 is located on the inner side of the first piston barrel 12 and is in sliding connection with the first piston barrel 12, a transition bin 16 is arranged at one end of the first piston barrel 12 away from the push ring 3, and a clamping unit is arranged on the inner side of the transition bin 16.
The end of the transition bin 16, which is close to the first piston cylinder 12, is provided with a flow guiding port 33, and the transition bin 16 and the first piston cylinder 12 are communicated through the flow guiding port 33.
In this embodiment, the push tube 1 is pushed to the appointed position in the well through the operation of the external setting tool, afterwards, the locking slip 4 is contacted with the inner wall of the pipeline and the expansion of the sealing rubber tube 6 is realized through the cooperation of the setting tool and the push tube 1 as well as the releasing rod 2, the sealing rubber tube 6 after expansion is locked through the locking slip 4, meanwhile, the outer wall of the sealing rubber tube 6 is contacted and sealed with the inner wall of the pipeline through the expansion of the sealing rubber tube 6, when the push tube 1 pushes the push ring 3 to move, the first piston tube 12 moves along the movable rod 14, so that the solution inside the first piston tube 12 enters the transition bin 16 under the extrusion of the first piston block 15, one side is used for making the guiding retaining piece operate, then, the push tube 1, the releasing rod 2 and the sealing tube 8 are separated through the operation of the setting tool, then, the sealing ball is enabled to accurately fall to the inner wall of the sealing tube 8 through the operation of the guiding retaining piece, the sealing ball is enabled to be contacted with the inner wall of the sealing tube 8, when the push tube 1 pushes the push tube 3, the first piston tube 12 moves along the movable rod 14, the first piston tube 12 can be enabled to be far away from the inner wall of the sealing tube 16, the sealing tube is enabled to be in the state of the sealing tube 8, the sealing tube is enabled to be further enabled to be contacted with the sealing tube, and the sealing tube is enabled to be in the sealing tube 8, and the sealing tube is enabled to be kept away from the sealing tube 8, and the sealing tube is enabled to be in the sealing tube 8, and the sealing tube is enabled to be contacted with the sealing tube and the sealing tube.
Example 2
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 7, the guiding retaining member further includes a first bellows 17 installed at the end of the transition bin 16 far away from the first piston cylinder 12, a locking positioning ring 11 connected to the outer wall of the central tube 7 is installed at one end of the first bellows 17, a guiding tube 25 penetrating through the other side of the locking positioning ring 11 is provided at one side of the locking positioning ring 11, a second piston cylinder 22 is connected to one side of the locking positioning ring 11 far away from the first bellows 17, the first bellows 17 and the second piston cylinder 22 are in a communicating state through the guiding tube 25, a second piston block 24 is slidably connected to the inside of the second piston cylinder 22, a flexible rod 21 extending to the outside of the second piston cylinder 22 is connected to one side of the second piston block 24, an L-shaped push plate 10 is installed at one end of the flexible rod 21, an L-shaped push plate 10 is installed at the outer wall of the flexible rod 9, a setting groove 19 is opened in the inside of the locking positioning ring 8, one end of the L-shaped push plate 10 extends to the inside the setting groove 19, one end of the L-shaped push plate 10 is rotatably connected to the guiding plate 18 through the rotating shaft, a torsion spring 20 is connected to the outside of the flexible rod 20 through the rotating shaft 18, and the flexible rod 20 is connected to the outside of the torsion spring 20.
The telescopic length of the first corrugated telescopic pipe 17 is equal to the moving distance of the first piston cylinder 12, a plurality of L-shaped pushing plates 10 are arranged, the L-shaped pushing plates 10 are distributed at equal intervals along the circle center of the movable ring 9, the circle center of the plugging pipe 8 is coaxial with the circle center of the movable ring 9, and the locking positioning ring 11 is coaxial with the circle center of the push ring 3.
In this embodiment, when the push cylinder 1 pushes the push ring 3 to move, the solution in the first piston cylinder 12 passes through the transition bin 16, the first corrugated expansion pipe 17 and the guide pipe 25 to enter the second piston cylinder 22 under the extrusion action of the first piston block 15, because the push cylinder 1 shields the outer wall of the plugging tube 8, the liquid injected into the second piston cylinder 22 at this time can squeeze the second piston block 24, at this time, the second piston block 24 moves in the direction far away from the locking positioning ring 11, the expansion rod 21 and the expansion spring 23 shrink in the process, so that the expansion rod 21 and the expansion spring 23 can store energy elastically, when the push cylinder 1 draws out a pipeline, the expansion spring 23 can drive the movable ring 9 to move towards the plugging tube 8, so that the L-shaped push plate 10 pushes the guide plate 18 to stretch out the setting groove 19, when the guide plate 18 is separated from the setting groove 19, one end of the guide plate 18 far away from the L-shaped push plate 10 can move towards the direction far away from the circle center of the tube 8 under the elastic restoring force of the torsion spring 20, so that the expansion rod 21 and the expansion spring 23 can contact the inner wall of the plugging tube 8, so that the expansion ball can enter the plugging tube 8 accurately, and the sealing ball can enter the sealing ball 8 accurately, and the sealing ball can be accurately contacted with the inner wall of the sealing ball 8.
Example 3
Referring to fig. 3, 8 and 9, the clamping unit includes a clamping plate 26 mounted on an inner wall of the transition bin 16, a baffle plate 27 is rotatably connected to a bottom of the clamping plate 26 through a rotating shaft, a positioning frame 30 is mounted on an outer wall of the transition bin 16, a guide rod 32 extending to an inner side of the transition bin 16 is inserted into a bottom of the positioning frame 30, a limiting plate 31 is fixed to one end of the guide rod 32 away from a center of a circle of the transition bin 16, a trapezoid clamping block 28 located at the inner side of the transition bin 16 is mounted at the other end of the guide rod 32, a second corrugated telescopic tube 29 connected with the inner wall of the transition bin 16 is connected to a bottom of the trapezoid clamping block 28, and the second corrugated telescopic tube 29 is located at an outer side of the guide rod 32.
Wherein, the diameter of baffle plate 27 is greater than the diameter of water conservancy diversion mouth 33, and the baffle plate 27 is close to the sealed pad that the water conservancy diversion mouth 33 one side is provided with the soluble rubber and constitutes, and the top of locating rack 30 is provided with the diameter and is greater than guide arm 32 and be less than the through-hole of second ripple flexible pipe 29 inner wall diameter, and the baffle plate 27 is in the side that the trapezoidal screens piece 28 is close to baffle plate 27 and baffle plate 27 is kept away from the one side parallel and level of water conservancy diversion mouth 33 when being in vertical state.
In this embodiment, in the process of pushing the push ring 3 to move by the push barrel 1 before staged fracturing in the well, the solution in the first piston barrel 12 enters the transition bin 16 through the flow guide port 33, the baffle plate 27 swings under the impact of the aqueous solution, the baffle plate 27 swings and recovers when the pressure in the first piston barrel 12 and the pressure in the transition bin 16 are balanced, the baffle plate 27 shields the flow guide port 33, the trapezoidal clamping block 28 moves towards the center of the transition bin 16 due to the pressure increase between adjacent bridge plugs when staged fracturing is performed in the well, so that one side of the trapezoidal clamping block 28 is attached to one side of the baffle plate 27 away from the flow guide port 33, meanwhile, the second corrugated expansion pipe 29 stretches, so that the baffle plate 27 is prevented from swinging by shielding the trapezoidal clamping block 28, and the baffle plate 27 and the first piston block 15 are in a sealing state, so that the first piston barrel 12 cannot move along the movable rod 14, the push ring 3 is prevented from moving, the stability of the seal sleeve is further improved, and the seal sleeve 6 is kept close to the seal sleeve after the seal sleeve is formed.
The working principle of the invention is that the pushing cylinder 1 is pushed to the appointed position in the well through the operation of the external setting tool, then the sealing tool is matched with the pushing cylinder 1 and the releasing rod 2 to realize the contact between the locking slip 4 and the inner wall of the pipeline and the expansion of the sealing rubber cylinder 6, the locking slip 4 is used for locking the expanded sealing rubber cylinder 6, the outer wall of the sealing rubber cylinder 6 is contacted with the inner wall of the pipeline through the expansion of the sealing rubber cylinder 6, when the pushing cylinder 1 pushes the pushing ring 3 to move, the solution in the first piston cylinder 12 passes through the transition bin 16 under the extrusion action of the first piston block 15, the first corrugated expansion pipe 17 and the flow guide pipe 25 to enter the second piston cylinder 22, the second piston block 24 is extruded by the blocking cylinder 1 on the outer wall of the sealing pipe 8, the second piston cylinder 22 is injected with the liquid at the moment, the second piston block 24 moves towards the direction far away from the locking positioning ring 11, the expansion rod 21 and the expansion spring 23 are contracted in the process, the expansion plate 23 is pulled out, when the pushing plate 18 is pushed out, the expansion plate 18 is pushed to move towards the inner wall 18, the guide plate 18 is contacted with the guide plate 18, and the guide plate 18 is contacted with the inner wall 18, when the guide plate 18 is contacted with the inner wall 18 is contacted with the guide plate 18, the guide plate 18 is contacted with the inner wall 18, the guide plate 18 is contacted with the guide plate 18, when the guide plate 18 is contacted with the guide plate 18, so improve the soluble ball and get into the precision in the shutoff pipe 8 with this, carry out the staged fracturing in the well before pushing away the section of thick bamboo 1 and promote the push ring 3 in the in-process that removes in the transition storehouse 16 can be passed through water conservancy diversion mouth 33 to the solution of first piston tube 12 inside, baffle 27 just can swing under the impact of aqueous solution at this moment, baffle 27 just can swing and restore when the inside pressure balance of first piston tube 12 and transition storehouse 16, baffle 27 just can shelter from water conservancy diversion mouth 33 at this moment, because the pressure between the adjacent bridging plug increases when carrying out staged fracturing in the well, so alright make trapezoidal screens piece 28 move towards the centre of a circle direction of transition storehouse 16, so make one side of trapezoidal screens piece 28 and baffle 27 keep away from the one side of water conservancy diversion mouth 33 laminating mutually, and the extension pipe 29 stretches simultaneously, so alright prevent baffle 27 through the shielding of trapezoidal screens piece 28 and swing, just can be in sealed state between baffle 27 and the first piston piece 15 at this moment, so make first piston tube 12 follow movable rod 14 and carry out the removal, thereby prevent that seal ring 6 from taking place and seal stability is kept close to seal the back to the sealing sleeve pipe, seal stability has been guaranteed, seal sleeve pipe 6 has further moved, seal stability has been formed.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a but sealed soluble bridging plug structure of monitoring, includes push away section of thick bamboo (1), release pole (2), center tube (7), shutoff pipe (8), push away section of thick bamboo (1), release pole (2) link to each other through external setting tool, shutoff pipe (8) link to each other with release pole (2), center tube (7) fixed mounting is in the one end of shutoff pipe (8), a serial communication port, cone (5) are installed to the outer wall of center tube (7), be provided with on center tube (7) and be located sealed packing element (6) of cone (5) one side, the outside of flexible center tube (7) is provided with push ring (3) that contact with push away section of thick bamboo (1), push ring (3) are close to one side of cone (5) conical inclined plane and are provided with locking slips (4), the both sides of push ring (3) are provided with the direction retaining piece for leading the soluble ball and carrying out the unidirectional locking to locking slips (4);
The guide retaining piece comprises a splice plate (13) arranged on one side of the conical cylinder (5) close to the push ring (3), a movable rod (14) penetrating through the push ring (3) is arranged on one side of the splice plate (13), a first piston block (15) is arranged at one end of the movable rod (14), one side, away from the locking slip (4), of the push ring (3) is fixedly connected with a first piston cylinder (12), the first piston block (15) is located on the inner side of the first piston cylinder (12) and is in sliding connection with the first piston cylinder (12), a transition bin (16) is arranged at one end, away from the push ring (3), of the first piston cylinder (12), and a clamping unit is arranged on the inner side of the transition bin (16).
2. The monitorable sealed soluble bridge plug structure according to claim 1, wherein a guide port (33) is formed at one end of the transition bin (16) close to the first piston cylinder (12), and the transition bin (16) is communicated with the first piston cylinder (12) through the guide port (33).
3. The structure of a sealing and soluble bridge plug capable of being monitored as claimed in claim 2, wherein the guiding and retaining member further comprises a first corrugated expansion pipe (17) installed at one end of the transition bin (16) far away from the first piston cylinder (12), a locking positioning ring (11) connected with the outer wall of the central pipe (7) is installed at one end of the first corrugated expansion pipe (17), a guide pipe (25) penetrating through the other side of the locking positioning ring (11) is arranged at one side of the locking positioning ring (11), a second piston cylinder (22) is connected to one side of the locking positioning ring (11) far away from the first corrugated expansion pipe (17), a communication state is formed between the first corrugated expansion pipe (17) and the second piston cylinder (22) through the guide pipe (25), a second piston block (24) is connected to the inside of the second piston cylinder (22) in a sliding manner, a telescopic rod (21) extending to the outer side of the second piston cylinder (22) is connected to one side of the second piston block (24), a movable ring (9) is fixedly connected to one end of the telescopic rod (21), a movable ring (9) is connected to one end of the telescopic rod (9) extending to the inner side of the second piston cylinder (22), a push plate (19) is provided with a groove (19), a groove (19) extending from the inner side of the push plate (8) is provided, the inner side (8) is provided, one end of the L-shaped push plate (10) is rotationally connected with a guide plate (18) through a rotating shaft, a torsion spring (20) is clamped at the outer side of the rotating shaft, connected with the L-shaped push plate (10), of the guide plate (18), and a telescopic spring (23) is arranged inside the telescopic rod (21).
4. A monitorable sealed soluble bridge plug structure according to claim 3 and characterised in that the telescopic length of the first bellows (17) is equal to the displacement distance of the first piston cylinder (12).
5. A monitorable sealed soluble bridge plug structure according to claim 3 and wherein the number of L-shaped push plates (10) is plural and the plurality of L-shaped push plates (10) are equidistantly distributed along the centre of the movable ring (9).
6. A monitorable sealed soluble bridge plug structure according to claim 3 and characterised in that the centre of the plugging tube (8) is coaxial with the centre of the movable ring (9) and the locking collar (11) is coaxial with the centre of the push ring (3).
7. A sealing soluble bridge plug structure capable of being monitored according to claim 3, characterized in that, the clamping unit is including installing cardboard (26) in transition storehouse (16) inner wall, the bottom of cardboard (26) is connected with baffle (27) through the pivot rotation, locating rack (30) are installed to the outer wall of transition storehouse (16), peg graft in the bottom of locating rack (30) have guide arm (32) that extend to transition storehouse (16) inboard, one end that transition storehouse (16) centre of a circle was kept away from to guide arm (32) is fixed with limiting plate (31), trapezoidal clamping piece (28) that are located transition storehouse (16) inboard are installed to the other end of guide arm (32), the bottom of trapezoidal clamping piece (28) is connected with second ripple flexible pipe (29) that link to each other with transition storehouse (16) inner wall, and second ripple flexible pipe (29) are located the outside of guide arm (32).
8. A sealable soluble bridge plug structure as claimed in claim 7, wherein the baffle plate (27) has a diameter greater than the diameter of the flow guide opening (33), and a gasket of soluble rubber is provided on the side of the baffle plate (27) adjacent to the flow guide opening (33).
9. A monitorable sealed soluble bridge plug structure according to claim 7 and characterised in that the top of the spacer (30) is provided with a through hole having a diameter larger than the guide rod (32) and smaller than the diameter of the inner wall of the second bellows (29).
10. A sealable dissolvable bridge plug structure according to claim 7, wherein the side of the baffle plate (27) which is close to the baffle plate (27) is flush with the side of the baffle plate (27) which is remote from the flow guide (33) when the baffle plate (27) is in a vertical state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511116590.9A CN120759559B (en) | 2025-08-11 | 2025-08-11 | Sealing soluble bridge plug structure capable of being monitored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511116590.9A CN120759559B (en) | 2025-08-11 | 2025-08-11 | Sealing soluble bridge plug structure capable of being monitored |
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| CN120759559A true CN120759559A (en) | 2025-10-10 |
| CN120759559B CN120759559B (en) | 2026-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202511116590.9A Active CN120759559B (en) | 2025-08-11 | 2025-08-11 | Sealing soluble bridge plug structure capable of being monitored |
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| US3710866A (en) * | 1971-06-21 | 1973-01-16 | Dow Chemical Co | Drag block and slip assembly |
| US20100282338A1 (en) * | 2009-05-07 | 2010-11-11 | Baker Hughes Incorporated | Selectively movable seat arrangement and method |
| CN212867499U (en) * | 2020-08-14 | 2021-04-02 | 江苏柯沣石化机械有限公司 | Soluble bridge plug |
| CN112814611A (en) * | 2021-01-05 | 2021-05-18 | 孙淑芳 | Integrated soluble bridge plug |
| CN116733417A (en) * | 2023-08-16 | 2023-09-12 | 陕西海格瑞恩实业有限公司 | Anti-drop's soluble bridging plug |
| WO2024040786A1 (en) * | 2022-08-23 | 2024-02-29 | 中国石油天然气集团有限公司 | Two-stage sealing type metal dissolvable bridge plug |
| CN220705620U (en) * | 2023-06-06 | 2024-04-02 | 中石化石油工程技术服务股份有限公司 | Rotary casing for shale gas wells |
| CN221568416U (en) * | 2023-12-29 | 2024-08-20 | 东营弘科石油科技有限公司 | Ball throwing type all-metal quick drilling bridge plug |
| CN120175268A (en) * | 2023-12-20 | 2025-06-20 | 中国石油天然气集团有限公司 | Dissolvable bridge plug with ultra-low setting force |
-
2025
- 2025-08-11 CN CN202511116590.9A patent/CN120759559B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710866A (en) * | 1971-06-21 | 1973-01-16 | Dow Chemical Co | Drag block and slip assembly |
| US20100282338A1 (en) * | 2009-05-07 | 2010-11-11 | Baker Hughes Incorporated | Selectively movable seat arrangement and method |
| CN212867499U (en) * | 2020-08-14 | 2021-04-02 | 江苏柯沣石化机械有限公司 | Soluble bridge plug |
| CN112814611A (en) * | 2021-01-05 | 2021-05-18 | 孙淑芳 | Integrated soluble bridge plug |
| WO2024040786A1 (en) * | 2022-08-23 | 2024-02-29 | 中国石油天然气集团有限公司 | Two-stage sealing type metal dissolvable bridge plug |
| CN220705620U (en) * | 2023-06-06 | 2024-04-02 | 中石化石油工程技术服务股份有限公司 | Rotary casing for shale gas wells |
| CN116733417A (en) * | 2023-08-16 | 2023-09-12 | 陕西海格瑞恩实业有限公司 | Anti-drop's soluble bridging plug |
| CN120175268A (en) * | 2023-12-20 | 2025-06-20 | 中国石油天然气集团有限公司 | Dissolvable bridge plug with ultra-low setting force |
| CN221568416U (en) * | 2023-12-29 | 2024-08-20 | 东营弘科石油科技有限公司 | Ball throwing type all-metal quick drilling bridge plug |
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| Publication number | Publication date |
|---|---|
| CN120759559B (en) | 2026-01-30 |
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Country or region after: China Address after: 710000 Haoxing Village Industrial Park, Xinshi sub district office, Lintong District, Xi'an City, Shaanxi Province Applicant after: Shaanxi Hageren Energy Technology Co., Ltd. Address before: 710000 Haoxing Village Industrial Park, Xinshi sub district office, Lintong District, Xi'an City, Shaanxi Province Applicant before: SHAANXI HAGRIEN INDUSTRIAL CO.,LTD. Country or region before: China |