CN115930108A

CN115930108A - Multistage damping device of drilling string

Info

Publication number: CN115930108A
Application number: CN202211457353.5A
Authority: CN
Inventors: 贺治鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2023-04-07
Also published as: CN112554809A; CN112554809B

Abstract

The invention discloses a multistage damping device for a drill string, which comprises a shell, wherein an airflow distinguishing mechanism is arranged inside the shell, a pressurizing explosion mechanism is arranged inside the shell, a vibration compensation mechanism is arranged outside the shell, the airflow distinguishing mechanism is fixed with the shell, the pressurizing explosion mechanism comprises a constant pressure component, a positive pressure balancing component and a negative pressure balancing component, the constant pressure component is fixed with the shell, the positive pressure balancing component and the negative pressure balancing component are fixed with the constant pressure component, the vibration compensation mechanism is fixed with the airflow distinguishing mechanism, the airflow distinguishing mechanism comprises an air inlet pipe, the air inlet pipe is fixed inside the shell, and a distinguishing bin is sleeved on the right side of the air inlet pipe.

Description

Multistage damping device of drilling string

Technical Field

The invention relates to the technical field of oil exploitation, in particular to a drill column multi-stage damping device.

Background

Petroleum is a fluid mineral buried deep in the ground. At first, oily liquid minerals produced in nature are called petroleum, combustible gas is called natural gas, and solid combustible oily minerals are called asphalt. With the intensive research on these minerals, it is recognized that they are hydrocarbon compounds in composition, and are related to each other in origin, so they are collectively called petroleum. The 11 th world oil in 9/1983 proposed that oil be a complex mixture of gaseous, liquid and solid hydrocarbons found in nature, with a small amount of impurities. Oil production also includes natural gas production.

Blowout, which is a phenomenon in which fluid in a formation is blown out of the ground or flows into other formations in a well, occurs in many cases at the site of oil and gas production. The causes of blowouts are many: the stratum pressure is inaccurate to master, the mud density is low, and the height of a mud liquid column in the well is reduced; tripping suction, and other undesirable measures. The invention provides a water-insoluble organic solution which has the properties of high temperature resistance and difficult volatilization, is liquefied by vibration, is solidified after standing, and is converted into viscous gel in a liquid state under a high-temperature environment.

The multi-stage damping device for the drill column has the characteristics of preventing blowout accidents, being capable of quickly responding to the blowout accidents to prevent the accidents from expanding and effectively bearing vibration generated in the accidents.

Disclosure of Invention

The present invention is directed to a multi-stage damping device for a drill string, which solves the above problems.

In order to solve the technical problems, the invention provides the following technical scheme: a multi-stage damping device for a drill string comprises a shell, and is characterized in that: the air flow distinguishing mechanism is arranged inside the shell, the pressurizing explosion mechanism is arranged inside the shell, and the vibration compensation mechanism is arranged outside the shell; the airflow distinguishing mechanism is used for distinguishing whether the ascending airflow belongs to drilling fluid ascending airflow or blowout airflow, meanwhile, the underground pressure balance is maintained, the blowout accident is prevented from happening, the pressurizing explosion mechanism is used for rapidly reacting to apply pressure to the underground when the blowout accident happens, so that the expansion of the blowout accident is prevented, and the vibration compensation mechanism is used for effectively relieving the vibration brought by the pressurizing explosion mechanism.

According to the above technical scheme, the mechanism is fixed with the casing is discerned to the air current, pressurization explosion mechanism includes constant voltage subassembly, positive pressure balance subassembly and negative pressure balance subassembly, the constant voltage subassembly is fixed with the casing, positive pressure balance subassembly and negative pressure balance subassembly are fixed with the constant voltage subassembly, it is fixed that vibrations compensation mechanism distinguishes the mechanism with the air current.

According to the technical scheme, the airflow distinguishing mechanism comprises an air inlet pipe, the air inlet pipe is fixed in the shell, a distinguishing bin is sleeved on the right side of the air inlet pipe, a first one-way valve is fixed at the top end of the air inlet pipe, a support is welded above the distinguishing bin, a telescopic filter screen plate is connected to the lower portion of the support through a bearing, a solid recovery pipe is welded to one side of the lower portion of the telescopic filter screen plate and located on the lower inner wall of the distinguishing bin, the other end of the solid recovery pipe is fixed in the air inlet pipe, a one-way conduction switch is arranged at the joint of the solid recovery pipe and the air inlet pipe, a first connecting rod is connected to the lower end of the telescopic filter screen plate through a bearing, a second connecting rod is connected to the other end of the first connecting rod through a bearing, a baffle is connected to the other end of the second connecting rod through a bearing, the baffle is consistent with the outlet of the right end of the distinguishing bin in size, a regulating block is connected to the center of the right end of the baffle through a bearing, a third connecting rod is connected to the right end of the regulating block through a bearing, the other end of the third connecting rod is fixed in the shell, a backflow pipe is sleeved on the first one-way valve, and a drainage pipe is sleeved below the other end of the third connecting rod.

According to the technical scheme, the constant voltage component comprises an explosion bin, a speed regulating valve is arranged on the drainage tube, the other end of the drainage tube is sleeved at the lower end of the explosion bin, a bidirectional pressure valve is arranged at the joint of the drainage tube and the explosion bin, a solution is arranged in the explosion bin, the left end of the explosion bin is fixed with the shell, a one-way ball valve is sleeved at the right end of the explosion bin, the right end of the one-way ball valve is connected with a liquid replenishing bin through a pipeline, positive pressure balance components are arranged on two sides of the upper end of the explosion bin and are in transmission connection with the speed regulating valve, negative pressure balance components are fixed above the explosion bin, a driving pump is arranged above the negative pressure balance components, a fuel bin is fixed inside the shell above the driving pump, a pressure plate is slidably connected inside the fuel bin, one end of the positive pressure balance components is connected with the pressure plate at two ends of the fuel bin through pipelines, a tension rope is fixed at the right end of the pressure plate, and the other end of the rope is fixed on the one-way ball valve.

According to the above technical scheme, positive pressure balance assembly is including just sucking the shell, the top of just sucking the shell is connected with positive drive shaft through the bearing, the one end and the driving pump transmission of positive drive shaft are connected, the other end of positive drive shaft is fixed with the quarter butt, the other end of quarter butt is connected with positive suction rod through the bearing, the internal transmission of just sucking the shell is connected with sealed dish, the spout has been seted up to the central authorities of sealed dish, positive suction rod and spout sliding connection, the both sides correspondence that the lower extreme of just sucking the shell is located positive suction rod has seted up air inlet and gas outlet, the gas outlet is fixed with explosion storehouse, the air inlet passes through the top that the pipe connection is located the pressure plate at the both ends in bunker.

According to the above technical scheme, negative pressure balance assembly includes the burden suction shell, the left end of burden suction shell is the A port, the right-hand member of burden suction shell is the B port, the top pipe joint in A port and explosion storehouse, the B port passes through the bottom of tube coupling at the bunker, the inside of burden suction shell is provided with the burden drive shaft, the burden drive shaft runs through the burden suction shell, the one end that the burden drive shaft is located the burden suction shell outside is connected with the drive pump machine transmission, the one end outside that the burden drive shaft is located the burden suction shell inside is fixed with the hexagon carousel, the outside of hexagon carousel evenly is connected with the burden suction pole through the bearing, the other end of burden suction pole and the inner wall sliding connection of burden suction shell.

According to the technical scheme, the vibration compensation assembly comprises a connecting column, the connecting column is of a hollow structure, one end of the connecting column is fixed with the air inlet pipe, a plurality of arc-shaped clamping jaws are evenly arranged on the outer side of the connecting column, a stretching film is fixed between the arc-shaped clamping jaws, and a plurality of transmission assemblies are arranged on the inner sides of the arc-shaped clamping jaws.

According to the technical scheme, the transmission assembly comprises two polygonal connecting plates, a plurality of arc connecting rods are connected between the two polygonal connecting plates through bearings, the other ends of the arc connecting rods are connected with arc plates through bearings, expansion balls are fixed between the arc plates, and the outer sides of the expansion balls are fixed with the arc clamping jaws.

According to the technical scheme, the expansion ball comprises a runner pipe, a plurality of square connecting blocks are uniformly arranged on the outer side of one end of the runner pipe, square slide ways are arranged inside the square connecting blocks, a sliding rod is connected in the square slide ways in a sliding mode, a triangular connecting block is fixed on the outer side of the sliding rod, an annular connecting plate is arranged on one side of the triangular connecting block, arc-shaped connecting plates are uniformly arranged on the outer sides of the annular connecting plates, arc-shaped slide ways are arranged inside the arc-shaped connecting plates, and the arc-shaped slide ways are connected with the sliding rod in a sliding mode.

According to the technical scheme, the two ends of the arc-shaped plate are both arc-shaped, the two polygonal connecting plates are provided with the air injection pipes, the air injection pipes penetrate through the two polygonal connecting plates, the size of the air injection pipes is consistent with that of the connecting columns, and the transmission assembly is provided with a plurality of groups.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the airflow distinguishing mechanism is arranged, so that the ascending airflow is distinguished to belong to the drilling fluid ascending airflow or the blowout airflow, and meanwhile, the underground pressure balance is maintained to prevent the blowout accident; by arranging the pressurization explosion mechanism, when a blowout accident occurs, the pressurization explosion mechanism quickly reacts to apply pressure to the underground to prevent the blowout accident from expanding; through being provided with vibrations compensation mechanism, can effectively alleviate the vibrations that pressurization explosion mechanism brought.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front sectional view of the air flow discrimination mechanism of the present invention;

FIG. 2 is a schematic view of a first operating state of the air flow discrimination mechanism of the present invention;

FIG. 3 is a schematic view of a second operating state of the air flow discrimination mechanism of the present invention;

FIG. 4 is a schematic perspective view of a positive pressure counterbalance assembly of the present invention;

fig. 5 is a schematic perspective view of a negative pressure balancing assembly of the present invention in a first operating state;

fig. 6 is a schematic perspective view of a negative pressure balancing assembly of the present invention in a second operating state;

FIG. 7 is a schematic view of a pressurized explosive mechanism according to the present invention in a first operational state;

FIG. 8 is a schematic view of a pressurized explosive mechanism of the present invention in a second operational state;

fig. 9 is a schematic view of a third operational state of the pressurized explosive mechanism of the present invention;

FIG. 10 is a perspective view of the vibration compensation mechanism of the present invention;

FIG. 11 is a perspective view of the vibration compensation mechanism of the present invention in a first operating state;

FIG. 12 is a perspective view of the vibration compensation mechanism of the present invention in a second operating state;

FIG. 13 is a schematic view of the interior of the expansion ball of the present invention;

in the figure: 100. an air inlet pipe; 101. distinguishing bins; 102. a support; 103. a solids recovery tube; 104. a regulating block; 105. a return pipe; 106. a first check valve; 107. a drainage tube; 200. an explosion bin; 201. a one-way ball valve; 202. a fuel bunker; 203. positively pumping the shell; 204. a positive drive shaft; 205. a positive suction rod; 206. sealing the disc; 207. a negative suction shell; 208. a hexagonal turntable; 209. a negative suction rod; 210. a negative drive shaft; 300. a polygonal connecting plate; 301. an arc-shaped connecting rod; 302. an arc-shaped plate; 303. a gas ejector tube; 400. expanding the ball; 401. a flow-through tube; 402. a square connecting block; 403. an annular connecting plate; 404. a slide bar; 405. an arc-shaped connecting plate.

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. 1-13, the present invention provides the following technical solutions: a multi-stage damping device for a drill string comprises a shell, and is characterized in that: the inside of the shell is provided with an airflow distinguishing mechanism, the inside of the shell is provided with a pressurizing explosion mechanism, and the outside of the shell is provided with a vibration compensation mechanism; the airflow distinguishing mechanism is used for distinguishing whether the ascending airflow belongs to drilling fluid ascending airflow or blowout airflow, maintaining underground pressure balance to prevent blowout accidents, the pressurizing explosion mechanism is used for rapidly reacting to apply pressure to the underground to prevent blowout accidents from expanding when blowout accidents occur, and the vibration compensation mechanism is used for effectively relieving vibration caused by the pressurizing explosion mechanism.

The air flow distinguishing mechanism is fixed with the shell, the pressurizing explosion mechanism comprises a constant pressure component, a positive pressure balancing component and a negative pressure balancing component, the constant pressure component is fixed with the shell, the positive pressure balancing component and the negative pressure balancing component are fixed with the constant pressure component, and the vibration compensation mechanism is fixed with the air flow distinguishing mechanism.

The airflow distinguishing mechanism comprises an air inlet pipe 100, the air inlet pipe 100 is fixed inside a shell, a distinguishing bin 101 is sleeved on the right side of the air inlet pipe 100, a first one-way valve 106 is fixed at the top end of the air inlet pipe 100, a support 102 is welded above the inside of the distinguishing bin 101, a telescopic filter screen plate is connected below the support 102 through a bearing, a solid recovery pipe 103 is welded on the lower inner wall of the distinguishing bin 101 on one side below the telescopic filter screen plate, the other end of the solid recovery pipe 103 is fixed inside the air inlet pipe 100, a one-way conduction switch is arranged at the joint of the solid recovery pipe 103 and the air inlet pipe 100, a first connecting rod is connected to the lower end of the telescopic filter screen plate through a bearing, a second connecting rod is connected to the other end of the first connecting rod through a bearing, a baffle plate is connected to the other end of the second connecting rod through a bearing, the baffle plate is consistent with the size of the outlet of the right end of the distinguishing bin 101, a regulating block 104 is connected to the center of the right end of the baffle plate through a bearing, a third connecting rod is fixed inside the shell, a return pipe 105 is sleeved above the other end of the third connecting rod, the return pipe 105 is fixed on the one-way valve 106, and a drainage pipe 107 is sleeved below the other end of the third connecting rod; during oil exploitation, drilling fluid can be continuously supplemented to an oil drill bit during underground exploitation operation, the drilling fluid can generate a back-rising airflow during rising of shale oil produced by wrapping and exploiting the drilling fluid, the airflow enters an air inlet pipe 100, the back-rising airflow of the drilling fluid only enters a distinguishing bin 101 on the right side of the air inlet pipe due to the fact that a one-way valve is arranged at the top end of the air inlet pipe, the back-rising airflow collides with a filter screen plate in the distinguishing bin 101, broken shale oil stone mixed with the back-rising airflow is blocked by the filter screen plate and naturally falls into a solid recovery pipe 103 for later use, when the filter screen plate blocks the broken shale oil stone, the shale oil stone falls down to drive the filter screen plate to stretch and move down through a first connecting rod and a second connecting rod to pull a baffle plate to move down, at the moment, the upper portion of an outlet on the right end of the distinguishing bin 101 is opened, an outlet on the lower portion is blocked, the back-rising airflow of the filtered drilling fluid enters a return pipe 105 to open a first one-way valve 106 to return and collide with the rising airflow in the air inlet pipe 100 to form a reaction force to maintain pressure balance between the well and the well, and avoid blowout;

when the pressure balance on the well and the underground is damaged and the well blowout phenomenon occurs, the well blowout airflow enters the distinguishing bin through the air inlet pipe 100, the filter screen plate is pushed away due to the pressure of the well blowout airflow so that the filter screen plate rotates through a bearing at the top end, the second connecting rod drives the baffle to move upwards so that the adjusting block at the right end moves upwards, the upper end of the outlet at the right end of the distinguishing bin 101 is blocked, the lower end of the outlet is communicated, the airflow sprayed out of the well flows into the drainage pipe 107, and the gas sprayed out of the well in the step is guided and processed independently.

The constant pressure component comprises an explosion bin 200, a speed regulating valve is arranged on the drainage tube 107, the other end of the drainage tube 107 is sleeved at the lower end of the explosion bin 200, a two-way pressure valve is arranged at the joint of the drainage tube 107 and the explosion bin 200, a solution is arranged in the explosion bin 200, the left end of the explosion bin 200 is fixed with the shell, a one-way ball valve 201 is sleeved at the right end of the explosion bin 200, the right end of the one-way ball valve 201 is connected with a liquid supplementing bin through a pipeline, positive pressure balance components are arranged on two sides of the upper end of the explosion bin 200 and are in transmission connection with the speed regulating valve, a negative pressure balance component is fixed above the explosion bin 200, a driving pump is arranged above the negative pressure balance component, a fuel bin 202 is fixed above the driving pump and positioned inside the shell, a pressure plate is slidably connected inside the fuel bin 202, one end of the positive pressure balance component is connected to two ends of the fuel bin 202 through pipelines, a tension rope is fixed at the right end of the pressure plate, and the other end of the tension rope is fixed on the one-way ball valve 201; the airflow from the blowout enters the drainage tube 107, if the flow of the blowout airflow is larger, the blowout airflow passes through the speed regulating valve to drive the speed regulating valve, the speed regulating valve drives the positive pressure balance components at the two sides of the upper end of the explosion bin 200 to operate, the combustion-supporting gas in the fuel bin 202 is pumped into the explosion bin 200 to pressurize, and simultaneously the combustion-supporting gas is filled to assist subsequent explosion, if the flow of the blowout airflow is smaller, the blowout airflow passes through the speed regulating valve, the rotating speed of the speed regulating valve is not enough to drive the two positive pressure balance components to operate together, only one of the positive pressure balance components can be pumped, the blowout gas is natural gas, and the solution passing through the explosion bin 200 is introduced from the lower end of the explosion bin 200, in the present invention, the solution is preferably a water-insoluble organic solution, and the natural gas passes through the solution and enters the upper space of the explosion chamber 200, and is isolated by the organic solution, so that the fire light generated by explosion is prevented from igniting the blowout natural gas, when the natural gas in the explosion bin 200 is exploded and then burns a large amount of combustion-supporting gas, the combustion-supporting gas and the organic solution in the fuel bin 202 are reduced, the combustion-supporting gas is burnt, the organic solution is pushed by the thrust generated by explosion to flow into the drainage tube 107 to collide with the blowout gas and then is pushed back into the well, at the moment, the pressure plate slides in the fuel silo 202 to move upwards, the limiting ball in the one-way ball valve 201 is pulled open through a tension rope at the right end of the one-way ball valve, so that the organic solution in the liquid supplementing bin is supplemented into the explosion bin 200, the organic solution under the pushing force of explosion enters the drainage tube 107 and enters the distinguishing bin, the broken shale oil stones of the card owner on the stretching filter screen plate are cleaned, one part of organic solution enters the air inlet pipe 100 to flow downwards to extrude blowout gas, and the other part of organic solution is mixed with the broken shale oil stones collected in advance through the solid recovery pipeline to enter the air inlet pipe 100 to extrude the blowout gas below.

The positive pressure balance assembly comprises a positive suction shell 203, the top end of the positive suction shell 203 is connected with a positive driving shaft 204 through a bearing, one end of the positive driving shaft 204 is in transmission connection with a driving pump, the other end of the positive driving shaft 204 is fixed with a short rod, the other end of the short rod is connected with a positive suction rod 205 through a bearing, the interior of the positive suction shell 203 is in transmission connection with a sealing disc 206, the center of the sealing disc 206 is provided with a chute, the positive suction rod 205 is in sliding connection with the chute, the lower end of the positive suction shell 203 is positioned at two sides of the positive suction rod 205 and correspondingly provided with an air inlet and an air outlet, the air outlet is fixed with the explosion bin 200, and the air inlet is connected with two ends of the fuel bin 202 through pipelines and positioned above a pressure plate; positive drive shaft 204 rotation drive with it fixed quarter butt rotates, when the quarter butt drives positive suction rod 205 that its other end bearing is connected and carries out the up-and-down motion, positive suction rod 205 sliding connection drives the positive suction rod 205 of skew reciprocating motion about sealed dish 206 realizes shifting up when aiming at the air inlet of just sucking the shell 203 bottom and extracts through the combustion-supporting gas in the fuel storehouse 202 through the pipeline, move down when just sucking the gas outlet that the rod 205 aims at just sucking the shell 203 bottom and discharge the combustion-supporting gas of extraction to the explosion storehouse 200 in, the effect of sealed dish 206 lies in effectively preventing the gas in the explosion storehouse 200 and reveals to the pipeline in.

The negative pressure balance assembly comprises a negative suction shell 207, the left end of the negative suction shell 207 is an A port, the right end of the negative suction shell 207 is a B port, the A port is connected with the top end of the explosion bin 200 in a pipe mode, the B port is connected to the bottom end of the fuel bin 202 through a pipeline, a negative driving shaft 210 is arranged inside the negative suction shell 207, the negative driving shaft 210 penetrates through the negative suction shell 207, one end, located outside the negative suction shell 207, of the negative driving shaft 210 is in transmission connection with a driving pump, a hexagonal turntable 208 is fixed on the outer side of one end, located inside the negative suction shell 207, of the negative driving shaft 210, the outer side of the hexagonal turntable 208 is evenly connected with a negative suction rod 209 through a bearing, and the other end of the negative suction rod 209 is in sliding connection with the inner wall of the negative suction shell 207; the driving pump machine drives the negative driving shaft 210 to rotate, the negative driving shaft 210 drives the hexagonal turntable 208 fixed on the outer side of the negative driving shaft 210 to rotate, meanwhile, the negative suction rod 209 on the outer side of the negative driving shaft 207 rotates in a friction mode inside the negative suction shell 207, the negative driving shaft 210 is installed on one side of the axis of the negative driving shell 207 to form an eccentric wheel, the negative suction rod 209 pumps original gas in the explosion bin 200 through an A port in the rotating process, the original gas is discharged to the lower portion inside the fuel bin 202 from a B port at the right end through rotating and extruding, the purpose of the step is to cooperate with a positive pressure balance assembly to maintain the pressure in the explosion bin 200 and the content of the natural gas sprayed from a well in the explosion bin 200 to achieve an explosion condition, when the natural gas in the explosion bin 200 explodes, the thrust generated after the natural gas in the explosion rapidly rushes into the A port, the A port generates a large upward thrust to enable the negative suction shell 207 to rotate 180 degrees around the negative driving shaft 210, the content of the natural gas in the explosion bin 200 is reversely pumped through the natural gas, and accordingly, and large vibration is avoided from continuous explosion.

The vibration compensation assembly comprises a connecting column, the connecting column is of a hollow structure, one end of the connecting column is fixed with the air inlet pipe 100, a plurality of arc-shaped clamping jaws are uniformly arranged on the outer side of the connecting column, a stretching film is fixed between the arc-shaped clamping jaws, and a transmission assembly is arranged on the inner sides of the arc-shaped clamping jaws; can produce great vibrations after the explosion takes place, this vibrations are propagated in the underground and are produced vertical shock wave and horizontal shock wave, vertical shock wave is propagated in the underground and is felt vertical shock wave at first than the more piece of horizontal shock wave then the vibration compensation subassembly, be experiencing vertical shock wave a plurality of arc clamping jaws and transmission assembly alternate segregation, two structures are pressed close to each other and are separated by vibrations when vertical shock wave takes place, form the organic solution that the route supplied to contain the leaf oilstone when the laminating and circulate and push down, subsequent organic solution spills to between a plurality of arc clamping jaws when the separation, by the restriction of tensile membrane.

The transmission assembly comprises two polygonal connecting plates 300, a plurality of arc-shaped connecting rods 301 are connected between the two polygonal connecting plates 300 through bearings, the other ends of the arc-shaped connecting rods 301 are connected with arc-shaped plates 302 through bearings, expansion balls 400 are fixed between the arc-shaped plates 302, and the outer sides of the expansion balls 400 are fixed with arc-shaped clamping jaws; when the device receives the longitudinal shock wave, polygon connecting rod 300 atress is rotated and is driven and be connected through the arc that the bearing is connected with it and pole 301 carries out rotatory skew and realizes the expansion of arc 302 and gathers together with the wall of a well that the laminating was excavated and avoid the device to receive the vibrations that the explosion produced and strike the wall of a well and produce the destruction.

The expansion ball 400 comprises a runner pipe 401, a plurality of square connecting blocks 402 are uniformly arranged on the outer side of one end of the runner pipe 401, square slideways are arranged in the square connecting blocks 402, sliding rods 404 are slidably connected in the square slideways, triangular connecting blocks are fixed on the outer sides of the sliding rods 404, an annular connecting plate 403 is arranged on one side of each triangular connecting block, arc-shaped connecting plates 405 are uniformly arranged on the outer sides of the annular connecting plates 403, arc-shaped slideways are arranged in the arc-shaped connecting plates 405 and are slidably connected with the sliding rods 404, the two ends of the arc-shaped plates 302 are arc-shaped, gas injection pipes 303 are arranged on the two polygonal connecting plates 300, the gas injection pipes 303 penetrate through the two polygonal connecting plates 300, the size of the gas injection pipes 303 is consistent with that of the connecting columns, and a plurality of groups of transmission assemblies are arranged; when transmission assembly expands, the arc clamping jaw that drives expansion ball 400 and the outside removes and makes expansion ball 400 expand, annular connecting plate 403 atress rotation in the expansion ball 400 makes the arc connecting plate 405 of seting up the arc slide rather than the outside rotatory, slide bar 404 removes in its inside, it makes runner pipe 401 switch on to drive the triangle connecting block of fixing with slide bar 404 to move outward, the organic solution that contains the broken page oilstone of gathering in tensile membrane before this moment leaks to the wall of a well of chiseling through runner pipe 401 on, treat that it reinforces the wall of a well of chiseling after the cooling.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage damping device for a drill string comprises a shell, and is characterized in that: the air flow distinguishing mechanism is arranged inside the shell, the pressurizing explosion mechanism is arranged inside the shell, and the vibration compensation mechanism is arranged outside the shell;

the air flow distinguishing mechanism is fixed with the shell, the pressurizing explosion mechanism comprises a constant pressure component, a positive pressure balancing component and a negative pressure balancing component, the constant pressure component is fixed with the shell, the positive pressure balancing component and the negative pressure balancing component are fixed with the constant pressure component, and the vibration compensation mechanism is fixed with the air flow distinguishing mechanism;

the air flow discrimination mechanism comprises an air inlet pipe (100), the air inlet pipe (100) is fixed in the shell, a distinguishing bin (101) is sleeved on the right side of the air inlet pipe (100), a first one-way valve (106) is fixed at the top end of the air inlet pipe (100), a bracket (102) is welded at the upper part inside the distinguishing bin (101), a telescopic filter screen plate is connected at the lower part of the bracket (102) through a bearing, a solid recovery pipe (103) is welded on the lower inner wall of the distinguishing bin (101) at one side below the telescopic filter screen plate, the other end of the solid recovery pipe (103) is fixed in the air inlet pipe (100), a one-way conduction switch is arranged at the joint of the solid recovery pipe (103) and the air inlet pipe (100), the lower end of the telescopic filter screen plate is connected with a first connecting rod through a bearing, the other end of the first connecting rod is connected with a second connecting rod through a bearing, the other end of the second connecting rod is connected with a baffle through a bearing, the baffle is consistent with the outlet at the right end of the distinguishing bin (101), the center of the right end of the baffle is connected with an adjusting block (104) through a bearing, the right end of the adjusting block (104) is connected with a third connecting rod through a bearing, the other end of the third connecting rod is fixed in the shell, a return pipe (105) is sleeved above the other end of the third connecting rod, the other end of the return pipe (105) is fixed on a first one-way valve (106), and a drainage pipe (107) is sleeved below the other end of the third connecting rod;

the transmission assembly comprises two polygonal connecting plates (300), a plurality of arc-shaped connecting rods (301) are connected between the two polygonal connecting plates (300) through bearings, the other ends of the arc-shaped connecting rods (301) are connected with arc-shaped plates (302) through bearings, expansion balls (400) are fixed between the arc-shaped plates (302), and the outer sides of the expansion balls (400) are fixed to arc-shaped clamping jaws;

the both ends of arc (302) are the arc, two be provided with jet-propelled pipe (303) on polygon connecting plate (300), jet-propelled pipe (303) run through two polygon connecting plate (300), the size of jet-propelled pipe (303) is unanimous with the size of spliced pole, drive assembly is provided with a plurality of groups.

2. The multi-stage drill string damping device as recited in claim 1, further comprising: the constant voltage subassembly includes explosion storehouse (200), be provided with the governing valve on drainage tube (107), the other end of drainage tube (107) cup joints the lower extreme in explosion storehouse (200), the junction of drainage tube (107) and explosion storehouse (200) is provided with two-way pressure valve, be provided with the solution in explosion storehouse (200), the left end and the casing in explosion storehouse (200) are fixed, one-way ball valve (201) have been cup jointed to the right-hand member in explosion storehouse (200), the right-hand member of one-way ball valve (201) has the fluid infusion storehouse through the tube coupling, the upper end both sides in explosion storehouse (200) all are provided with positive pressure balance assembly, positive pressure balance assembly is connected with the governing valve transmission, the top in explosion storehouse (200) is fixed with negative pressure balance assembly, negative pressure balance assembly's top is provided with the drive pump machine, the top of drive pump machine is located the inside of casing and is fixed with bunker (202), the inside sliding connection in bunker (202) has, positive pressure balance assembly's one end is located the top of pressure plate through the both ends in bunker (202) of pipeline coupling, the right-hand member of tensile rope is fixed with the pressure plate, the other end of tensile rope is fixed with the pressure plate on the one-way ball valve (201) is fixed on the one-way ball valve.

3. The multi-stage drill string damping device as recited in claim 1, further comprising: positive pressure balance assembly includes positive suction shell (203), the top of positive suction shell (203) is connected with positive drive shaft (204) through the bearing, the one end and the driving pump transmission of positive drive shaft (204) are connected, the other end of positive drive shaft (204) is fixed with the quarter butt, the other end of quarter butt is connected with positive suction rod (205) through the bearing, the internal transmission of positive suction shell (203) is connected with sealed dish (206), the spout has been seted up at the central authorities of sealed dish (206), positive suction rod (205) and spout sliding connection, the both sides correspondence that the lower extreme of positive suction shell (203) is located positive suction rod (205) has seted up air inlet and gas outlet, the gas outlet is fixed with explosion storehouse (200), the air inlet is located the top of pressure plate through the pipe connection at the both ends in fuel storehouse (202).

4. The multi-stage drill string damping device as recited in claim 1, further comprising: negative pressure balance assembly includes burden suction shell (207), the left end of burden suction shell (207) is the A port, the right-hand member of burden suction shell (207) is the B port, the top pipe joint of A port and explosion storehouse (200), the B port passes through the bottom of tube coupling in bunker (202), the inside of burden suction shell (207) is provided with burden drive shaft (210), burden drive shaft (210) run through burden suction shell (207), the one end that burden drive shaft (210) are located burden suction shell (207) outside is connected with the drive pump machine transmission, the one end outside that burden drive shaft (210) are located burden suction shell (207) inside is fixed with hexagon carousel (208), the outside of hexagon carousel (208) evenly is connected with burden suction rod (209) through the bearing, the other end of burden suction rod (209) and the inner wall sliding connection of burden suction shell (207).

5. The multi-stage drill string damping device as recited in claim 1, wherein: the vibration compensation assembly comprises a connecting column, the connecting column is of a hollow structure, one end of the connecting column is fixed with an air inlet pipe (100), a plurality of arc-shaped clamping jaws are evenly arranged on the outer side of the connecting column, a plurality of stretching films are fixed between the arc-shaped clamping jaws, and a plurality of transmission assemblies are arranged on the inner sides of the arc-shaped clamping jaws.

6. The multi-stage drill string damping device as recited in claim 1, further comprising: the expansion ball (400) comprises a runner pipe (401), a plurality of square connecting blocks (402) are uniformly arranged on the outer side of one end of the runner pipe (401), square slide ways are arranged in the square connecting blocks (402), sliding rods (404) are connected in the square slide ways in a sliding mode, triangular connecting blocks are fixed on the outer sides of the sliding rods (404), an annular connecting plate (403) is arranged on one side of each triangular connecting block, arc-shaped connecting plates (405) are uniformly arranged on the outer sides of the annular connecting plates (403), arc-shaped slide ways are arranged in the arc-shaped connecting plates (405), and the arc-shaped slide ways are connected with the sliding rods (404) in a sliding mode.