CN110578487B - Two-way hydraulic force increasing device for hydraulic shaping pipe column - Google Patents
Two-way hydraulic force increasing device for hydraulic shaping pipe column Download PDFInfo
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- CN110578487B CN110578487B CN201910750835.1A CN201910750835A CN110578487B CN 110578487 B CN110578487 B CN 110578487B CN 201910750835 A CN201910750835 A CN 201910750835A CN 110578487 B CN110578487 B CN 110578487B
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- 238000007493 shaping process Methods 0.000 title claims abstract description 179
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 108091006146 Channels Proteins 0.000 claims description 172
- 230000008676 import Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 54
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000005192 partition Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002407 reforming Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
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Abstract
The invention relates to the technical field of damaged casing pipe reshaping and repairing, in particular to a bidirectional hydraulic force boosting device for a hydraulic reshaping pipe column. The bidirectional hydraulic booster comprises a bidirectional booster and a hydraulic commutator; the bidirectional booster comprises a piston cylinder and a piston, and the piston cylinder are matched to form a shaping chamber and a lifting chamber; the hydraulic commutator comprises a commutator body, a pressure transmission pipe is assembled in a center hole of the commutator body in a sliding sealing way and is upwards anti-dropping way, and the pressure transmission pipe is provided with a liquid inlet channel; the commutator main body is internally provided with a shaping channel and a lifting channel, the pressure transmission pipe has an upper limit position and a lower limit position on the stroke of reciprocating up and down along with the oil pipe, when the lower limit position is reached, the inlet of the shaping channel is communicated with the outlet of the liquid inlet channel, and the inlet of the lifting channel is communicated with the pressure relief channel; when the upper limit position is reached, the inlet of the shaping channel is communicated with the pressure relief channel, and the inlet of the lifting channel is communicated with the outlet of the liquid inlet channel.
Description
Technical Field
The invention relates to the technical field of damaged casing pipe reshaping and repairing, in particular to a bidirectional hydraulic force boosting device for a hydraulic reshaping pipe column.
Background
Along with the increase of the development age of the oil field, the well conditions of the oil-water well are increasingly worsened due to the reasons of well body structures, well cementation quality, corrosion and the like, the number of casing damage wells is continuously increased, a large number of oil-water wells are laid, technological measures cannot be implemented, interlayer contradictions are aggravated, and the yield is reduced.
To this end, the chinese patent with publication number CN101942979B discloses an anchoring ball type casing shaping device and a casing shaping method, the casing shaping device includes an upper joint, a drainage assembly, an anchoring assembly, a hydraulic cylinder assembly, a lower joint, and a ball shaper connected to the lower joint, the anchoring assembly fixes the casing shaping device on the casing, the hydraulic cylinder assembly applies downward force to the ball shaper, and the ball shaper is driven to move down to perform outward expansion shaping on the deformed section of the casing.
However, the casing shaping device in the prior art has some disadvantages when in use, the deformation section of the casing can rebound in the shaping process, the shaper is easy to be blocked, the hydraulic cylinder assembly can only apply downward acting force to the shaper, when the acting force of the blocking is greater than the load limit of the workover rig, the ground workover rig cannot lift the casing shaping device, the workover rig cannot continue to perform workover operation, and meanwhile, the construction operation has great potential safety hazards.
Disclosure of Invention
The invention aims to provide a bidirectional hydraulic force boosting device for a hydraulic shaping pipe column, which solves the technical problem that a shaper is easy to block and cannot lift in the prior art.
In order to realize the aim, the invention discloses a two-way hydraulic boosting device for a hydraulic shaping pipe column, which adopts the technical scheme that: a bidirectional hydraulic force increasing device for a hydraulic shaping pipe column comprises a bidirectional force increasing device used for applying force to a shaping device and a hydraulic reversing device used for controlling the force application direction of the bidirectional force increasing device;
the bidirectional booster comprises a piston cylinder and a piston which is in sliding seal fit with the piston cylinder along the up-down direction, one of the piston cylinder and the piston is used for being fixedly connected with the shaper, the other one of the piston cylinder and the piston is fixedly connected with the hydraulic commutator, the piston cylinder and the piston are matched to form a relatively independent shaping chamber and a lifting chamber, the shaper is driven to move downwards when liquid is pumped into the shaping chamber, and the shaper is driven to move upwards when the liquid is pumped into the lifting chamber;
the hydraulic commutator comprises a commutator body fixedly connected with the bidirectional booster, a central hole extending up and down is arranged in the commutator body, a pressure transmission pipe is assembled in the central hole in a sliding sealing and upward anti-dropping manner, the upper end of the pressure transmission pipe is used for being connected with an oil pipe, a liquid inlet channel communicated with the oil pipe is arranged in the pressure transmission pipe, and a liquid inlet channel outlet is arranged on the side part of the liquid inlet channel on the pressure transmission pipe;
the commutator main body is also provided with a shaping channel communicated with the shaping chamber and a lifting channel communicated with the lifting chamber, the inlet of the shaping channel and the inlet of the lifting channel of the shaping channel are positioned on the wall of the central hole and are sequentially arranged from bottom to top at intervals, and the commutator main body is also provided with a pressure relief channel for leading out liquid in the central hole for pressure relief;
the pressure transmission pipe is provided with an upper limit position and a lower limit position on the stroke of reciprocating up and down along with the oil pipe, when the pressure transmission pipe is positioned at the lower limit position, the inlet of the shaping channel is communicated with the outlet of the liquid inlet channel and is separated from the pressure relief channel, and the inlet of the lifting channel is communicated with the pressure relief channel and is separated from the outlet of the liquid inlet channel; when the lifting channel is positioned at the upper limit position, the inlet of the shaping channel is communicated with the pressure relief channel and is separated from the outlet of the liquid inlet channel, and the inlet of the lifting channel is communicated with the outlet of the liquid inlet channel and is separated from the pressure relief channel.
The invention has the beneficial effects that: according to the invention, by arranging the hydraulic commutator and the bidirectional booster, when the deformed section of the casing is shaped, the pipe column is lowered to enable the pressure transmission pipe to be arranged at a lower limit position, liquid is pumped into the shaping chamber, and the lifting chamber is decompressed, so that the shaper can be pushed down; when shaping is finished and lifting is carried out, the pressure transmission pipe is lifted to the upper limit position, liquid is pumped into the lifting chamber, the shaping chamber is decompressed, and then the shaper can be pushed upwards, so that the shaper can smoothly exit from the deformation section of the sleeve, and the condition that the shaper cannot be lifted when being clamped is avoided. In the invention, by using the bidirectional booster capable of bidirectionally applying force and the hydraulic commutator for controlling the force application direction of the bidirectional booster, acting forces in different directions can be applied to the shaper according to the using steps, so that the shaper can be boosted to move. In addition, in the invention, the reversing of the bidirectional booster can be realized by lifting and lowering the oil pipe, other control structures are not needed to be additionally configured, the structure is simpler, and the underground bidirectional booster is more suitable for actual underground use working conditions.
Further, the pressure transmission pipe comprises a small-diameter section at the upper end and a large-diameter section at the lower end, the large-diameter section is provided with the liquid inlet channel outlet, the central hole is provided with a sealing section in sealing fit with the large-diameter section, the hole wall of the sealing section is provided with the lifting channel inlet and the shaping channel inlet, the pressure relief channel comprises a shaping channel pressure relief hole and a lifting channel pressure relief hole, the two pressure relief holes extend in the radial direction, and the shaping channel pressure relief hole is positioned below the shaping channel inlet or is circumferentially staggered with the shaping channel inlet so as to be communicated with the shaping channel pressure relief hole and the shaping channel through the inner cavity of the central hole when the pressure transmission pipe is positioned at the upper limit; the lifting channel pressure relief hole is located above the lifting channel inlet or is circumferentially staggered with the lifting channel inlet, so that the lifting channel pressure relief hole and the lifting channel are communicated through the central hole and the annular space of the small-diameter section when the pressure transmission pipe is located at the lower limit position.
The effect of this scheme lies in, through being the path section and the path section with the pressure transmission pipe design, can utilize the path section to come the shutoff pressure release hole (no matter be plastic channel pressure release hole or lift and pull out the passageway pressure release hole), utilizes the pressure transmission pipe to lift the inner chamber that the back centre bore vacated and switches on plastic channel and plastic channel pressure release hole, utilizes the pressure transmission pipe to transfer the back path section and the annular space of centre bore to switch on and lift and pull out the passageway and lift and pull out passageway pressure release hole. The step that big, the path section formed also can prevent that the pressure transmission pipe from upwards deviating from, utilizes the structure of pressure transmission pipe self to realize the operation of pressure release and pump liquid, structurally changes the realization.
Further, the inlet channel export, lift and pull out the import of passageway and plastic passageway import and be the annular opening along circumference extension, plastic passageway pressure release hole is located plastic passageway import below, lifts to pull out passageway pressure release hole and is located and lifts to pull out passageway import top.
The effect of this scheme lies in, the inlet channel export, it is the annular opening to lift and pull out passageway import and plastic passageway import, when the equipment, need not consider the rotation relation between pressure transmission pipe and the commutator main part, no matter how the pressure transmission pipe rotates for the commutator main part, the intercommunication that all can realize the passageway, and correspondingly, plastic passageway pressure release hole must be located plastic passageway import below, it must be located and lifts and pull out passageway import top to lift and pull out passageway pressure release hole, in order to guarantee to lift when the pressure transmission pipe is at the top spacing and pull out passageway pressure release hole by the shutoff, plastic passageway pressure release hole is by the shutoff when the bottom is extremely spacing.
Furthermore, an annular stop member is hermetically assembled above the sealing section in the central hole, the annular stop member is used for stop-matching with the annular upper end of the large-diameter section to prevent the pressure transmission pipe from being pulled out upwards, and the small-diameter section penetrates into the annular stop member and is in sliding sealing matching with the annular stop member.
The scheme has the advantages that the anti-drop mode of the pressure transmission pipe is specifically realized, the pressure transmission pipe is prevented from dropping out by arranging the annular stopping piece in the central hole, and the inner wall surface of the annular stopping piece can be in sealing fit with the small-diameter section to prevent liquid from leaking outwards.
Further, the piston cylinder comprises a cylinder sleeve, the piston comprises a piston rod which is arranged in the cylinder sleeve at intervals in the radial direction, and an annular space is formed between the piston rod and the piston rod; one of the cylinder sleeve and the piston rod is a fixed part fixedly connected with the commutator body, and the other is a movable part fixedly connected with the shaper; at least three fixed part spacing rings are arranged on the fixed part at intervals along the axial direction, and the fixed part spacing rings are in sliding sealing fit with the corresponding peripheral surfaces of the movable parts so as to divide the annular space into at least two sub-chambers which are independent up and down; the movable piece is fixedly provided with a movable piece spacing ring corresponding to each sub-chamber, the movable piece spacing ring is in sliding sealing fit with the corresponding circumferential surface of the fixed piece, and the corresponding sub-chamber is divided into the shaping chamber and the lifting chamber; the bidirectional booster also comprises a shaping pipeline, the shaping pipeline is connected with each shaping cavity, and each shaping cavity is arranged in parallel; the bidirectional booster further comprises lifting pipelines, the lifting pipelines are connected with the lifting cavities, and the lifting cavities are arranged in parallel.
The effect of this scheme lies in, no matter the plastic cavity still lifts and pulls out the cavity, forms all that the cavity be a mounting spacer ring and a moving part spacer ring, pours into liquid back into the cavity into, and the liquid in the cavity can exert the effort to mounting spacer ring and moving part spacer ring simultaneously, because the fixation clamp spacer ring is fixed motionless, liquid can only promote the moving part spacer ring and remove. Each plastic chamber and each lift chamber are arranged in parallel, the force increasing can be realized by the cooperation of a plurality of moving part spacer rings, and the reciprocating movement of the moving parts can be realized through the alternate exchange of the plastic pipelines and the lift pipelines. The bidirectional booster hydraulic cylinder of the invention does not generate blocking force when in use, can better utilize the flowing power of liquid, and applies larger force under the same liquid pressure.
Further, an upper fixing piece spacing ring is positioned at the uppermost end in the fixing piece spacing rings, a lower fixing piece spacing ring is positioned at the lowermost end, a middle fixing piece spacing ring is positioned between the upper fixing piece spacing ring and the lower fixing piece spacing ring, the upper fixing piece spacing ring, the middle fixing piece spacing ring and each moving piece spacing ring are respectively provided with shaping pipeline through holes which are correspondingly communicated up and down, and lifting pipeline through holes which are correspondingly communicated up and down are also respectively arranged, the shaping pipeline through holes and the lifting pipeline through holes are arranged at intervals along the circumferential direction, the shaping pipeline and the lifting pipeline are both rigid pipes, a shaping pipeline passes through the shaping pipeline through holes from top to bottom, the upper end of the shaping pipeline extends to the upper part of the fixing piece spacing ring, the lifting pipeline passes through the lifting pipeline through holes from top to bottom, the upper end of the lifting pipeline extends to the upper part of the fixing piece spacing ring, the shaping pipeline is provided with shaping pipeline radial holes at the corresponding positions of the shaping cavities on the shaping pipeline, and the lifting pipeline is provided with lifting pipeline radial holes at the corresponding positions of the lifting cavities on; the piston rod and the cylinder sleeve are formed by a plurality of subsection sequential thread insertion sleeves which are sequentially connected from top to bottom, and the upper fixing piece spacer ring, the middle fixing piece partition plate and each moving piece spacer ring are vertically clamped and fixed between two adjacent subsections.
The effect of this scheme lies in, the plastic pipeline all is the rigid pipe with lifting the pipeline of pulling out, and the rigid pipe runs through each perforation and extends into each cavity by last under to, through at the plastic pipeline, lift the pipeline and set up radial trompil on and come to link to each other with each cavity, only need during the use with the one end of rigid pipe with the plastic passageway with lift the passageway and be connected, more simple and convenient during the connection, and reduced two-way booster's whole external diameter size. Each subsection thread insert sleeve is convenient to assemble and can be disassembled and replaced, the upper fixing piece spacer ring, the middle fixing piece spacer ring and the moving piece spacer ring are clamped up and down, and when each subsection is assembled, the upper fixing piece spacer ring, the middle fixing piece spacer ring and the moving piece spacer ring can be prevented from being driven to rotate, so that the through holes in the upper fixing piece spacer ring, the middle fixing piece spacer ring and the moving piece spacer ring can be ensured to correspond up and down.
Furthermore, the shaping channel and the lifting channel penetrate out of the lower end of the commutator body, channel fixing pipes are fixed in the shaping channel and the lifting channel, and the shaping pipeline and the lifting pipeline are respectively connected with the corresponding channel fixing pipes in a split welding mode.
Drawings
FIG. 1 is a diagram showing a state of use of a hydraulic shaping column according to the present invention, which is provided in embodiment 1 of a bidirectional hydraulic pressure booster for a hydraulic shaping column;
FIG. 2 is a schematic diagram of the hydraulic anchor of FIG. 1;
FIG. 3 is a schematic view showing the engagement of a hydraulic commutator and a bidirectional booster in a reforming state in embodiment 1 of the bidirectional hydraulic booster for a hydraulic reforming column according to the present invention;
FIG. 4 is a schematic view of section A-A of FIG. 3;
FIG. 5 is a schematic view of section B-B of FIG. 3;
FIG. 6 is a schematic diagram showing the engagement of a hydraulic commutator and a bidirectional booster in a lifting state in embodiment 1 of the bidirectional hydraulic booster for a hydraulic shaping string according to the present invention;
FIG. 7 is a schematic structural view of a hydraulic commutator in embodiment 1 of the two-way hydraulic pressure intensifying apparatus for hydraulic shaping column according to the present invention;
FIG. 8 is a schematic structural view of a bidirectional booster in accordance with embodiment 1 of the bidirectional hydraulic pressure intensifying apparatus for a hydraulic shaping string of the present invention;
FIG. 9 is a schematic view showing the connection between the shaping passage and the shaping pipe in embodiment 1 of the bidirectional hydraulic pressure intensifying apparatus for a hydraulic shaping string according to the present invention;
FIG. 10 is a schematic structural view of a shaper in embodiment 1 of the bidirectional hydraulic pressure booster for a hydraulic shaping string according to the present invention;
FIG. 11 is a schematic view of a hydraulic commutator in a reforming state in embodiment 2 of the two-way hydraulic pressure intensifying apparatus for a hydraulic reforming column of the present invention;
FIG. 12 is a schematic view of a hydraulic commutator in a lifting state in embodiment 2 of the bidirectional hydraulic pressure intensifying apparatus for a hydraulic shaping string according to the present invention;
description of reference numerals: 100-a cannula; 11-a casing deformation section; 200-oil pipe; 300-hydraulic anchor; 31-an anchor body; 32-bolt; 33-a spring; 34-pressing strips; 35-anchor teeth; 400-a hydraulic commutator; 41-commutator body; 42-a pressure transmission pipe; 43-small diameter section; 44-pressing the cap; 45-a liquid inlet channel; 46-a large diameter section; 47-outlet of liquid inlet channel; 48-shaping channel relief holes; 49-shaping channels; 410-a central hole; 411-lifting channel; 412-lifting the channel relief hole; 500-a bidirectional booster; 51-a piston; 52-a piston cylinder; 53-cylinder liner; 54-moving part spacer ring; 55-opening the pipe lifting path; 56-radial opening of the shaping pipeline; 57-a shaping chamber; 58-lift chamber; 59-lifting the pipeline; 510-shaping the pipeline; 511-a piston rod; 512-a fixture spacer ring; 513-piston rod segmentation; 514-cylinder liner segment; 515-line pressure cap; 516-a pipe connection pipe; 517-channel connecting pipe; 518-channel press cap; 519-channel fixing tube; 520-a red copper pad; 600-a shaper; 61-upper joint; 62-shaper body; 63-steel balls; 64-a baffle plate; 71-commutator body; 72-lifting the channel; 73-shaping the channel; 74-relief hole; 75-a pressure transmitting tube; 76-liquid inlet channel.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
A specific embodiment 1 of the two-way hydraulic booster for a hydraulic shaping column of the present invention is shown in fig. 1 to 10. The hydraulic shaping pipe column can carry out outward expansion repair on a sleeve deformation section in the sleeve, and the pipe column can be lifted up after the repair is completed.
The hydraulic shaping pipe column comprises an oil pipe 200, a hydraulic anchor 300, a hydraulic commutator 400, a bidirectional booster 500 and a shaper 600 which are sequentially connected in a threaded manner from top to bottom.
The oil pipe 200 is a common oil pipe in the market, and has a central passage in the middle.
The structure of the hydraulic anchor 300 is shown in fig. 2, the hydraulic anchor 300 includes an anchor body 31, a central passage communicating with the oil pipe 200 is provided in the middle of the anchor body 31, when assembling, the upper end of the anchor body 31 is connected with the oil pipe 200 by screw thread, and the lower end is connected with the hydraulic commutator 400 by screw thread. Three anchor teeth 35 are uniformly arranged on the side wall of the anchor body 31 at intervals along the circumferential direction, the anchor teeth 35 are movably assembled on the anchor body 31 along the radial direction of the anchor body 31, and the inner side surfaces of the anchor teeth 35 are communicated with a central channel in the anchor body 31. A pressing strip 34 is arranged on the outer portion of the anchor body 31 corresponding to the position of each anchor tooth 35 through a bolt 32, a groove is arranged on the radial outer side face of each anchor tooth 35, the pressing strip 34 can be embedded into the groove along the radial direction, a spring 33 is arranged between the pressing strip 34 and each anchor tooth 35 in a pressing mode, one end of the spring 33 abuts against the pressing strip 34, the other end of the spring 33 abuts against the anchor tooth 35, and radial inward acting force is applied to the anchor tooth 35.
When the hydraulic anchor is used and the oil pipe 200 is pressurized, the acting force of the anchor teeth 35 under the liquid pressure overcomes the elastic acting force of the spring 33 to move outwards in the radial direction, the anchor teeth 35 are meshed on the inner wall of the casing 100, the pipe column is effectively anchored, and the shaper 600 is guaranteed to descend smoothly. After the oil pipe 200 is decompressed, the anchor teeth 35 are moved radially inward by the elastic restoring force of the spring 33 to be disengaged from the inner wall of the casing 100. Of course, in other embodiments, commercially available hydraulic anchors may be used.
The structure of the hydraulic commutator 400 is as shown in fig. 3 to 8, the hydraulic commutator 400 includes a commutator body 41, a central hole 410 is formed on an upper end face of the commutator body 41, the central hole 410 is a blind hole with an upward opening, an internal threaded hole is formed on a lower end face of the commutator body 41, and the internal threaded hole is used for connecting with the bidirectional booster 500. As shown in fig. 7, the commutator body 41 is provided with a shaping channel 49 and a lifting channel 411, the shaping channel 49 and the lifting channel 411 are respectively arranged at two sides of the central hole 410, the shaping channel 49 and the lifting channel 411 are bent channels, the lower end of the shaping channel 49 and the lifting channel 411 penetrate through the commutator body 41, and the upper end of the shaping channel extends horizontally and is communicated with the central hole 410. The lower part of the central hole 410 is a sealing section, the shaping channel 49 has an inlet of the shaping channel on the wall of the sealing section of the central hole 410, and the lifting channel 411 has an inlet of the lifting channel on the wall of the sealing section of the central hole 410. As can be seen in fig. 7, the shaping channel inlet and the lift channel inlet are both annular openings.
As shown in fig. 7, the hydraulic commutator 400 further includes a pressure transmission pipe 42, the pressure transmission pipe 42 has a liquid inlet channel 45 therein, the liquid inlet channel 45 is a bent channel, the upper end of the bent channel is communicated with the central channel of the hydraulic anchor 300, the lower end of the bent channel extends horizontally, the liquid inlet channel 45 has a liquid inlet channel outlet 47 at the horizontal side of the pressure transmission pipe 42, and as shown in fig. 7, the liquid inlet channel outlet 47 is an annular opening. The pressure transmission pipe 42 comprises a small-diameter section 43 at the upper end and a large-diameter section 46 at the lower end, the large-diameter section 46 and the small-diameter section 43 form an upward annular step, and the large-diameter section 46 can be matched with a sealing section of the central hole 410 to realize sealing. In this embodiment, in order to prevent the pressure transmission pipe 42 from coming off from the commutator body 41, a pressure cap 44 is screwed on the portion of the central hole 410 above the seal section, and a seal ring is provided between the pressure cap 44 and the wall of the central hole 410. The inner diameter of the pressing cap 44 is smaller than that of the sealing section of the central hole 410, and a sealing ring is arranged between the outer circumferential surface of the small-diameter section 43 and the inner circumferential surface of the pressing cap 44 to realize sliding sealing fit. The pressure cap 44 is adapted to engage the upper end of the large diameter section 46 of the pressure transfer tube 42 in a stop-and-stop manner to prevent removal of the pressure transfer tube 42, and in use, the pressure transfer tube 42 is threadably engaged with the hydraulic anchor 300.
As shown in fig. 3, 5, 6 and 7, a shaping channel relief hole 48 is formed in a lower end side wall of the central hole 410, the shaping channel relief hole 48 is located below a shaping channel inlet, and the shaping channel relief hole 48 communicates the central hole 410 and the exterior of the commutator body 41. As shown in fig. 3 and 4, a uplift channel relief hole 412 is further formed in the sealing section of the central hole 410, the uplift channel relief hole 412 is located above an inlet of the uplift channel, and the uplift channel relief hole 412 communicates the central hole 410 and the exterior of the commutator body 41.
When the hydraulic commutator 400 is in the position shown in fig. 3, the pressure transmission pipe 42 is in the lower limit position, the large-diameter section 46 blocks the shaping channel pressure relief hole 48, and the small-diameter section 43 is communicated with the lifting channel pressure relief hole 412 and the lifting channel inlet. The inlet passage outlet 47 communicates with the shaping passage 49. The liquid entering from the liquid inlet channel 45 of the pressure transmission pipe 42 enters the shaping channel 49, the liquid enters the shaping cavity 57 and pushes down the piston cylinder 52, and the liquid in the lifting cavity 58 enters the lifting channel pressure relief hole 412 through the lifting channel 411 for pressure relief.
When the hydraulic commutator 400 is at the position shown in fig. 6, the pressure transmission pipe 42 is at the upper limit position, the pressure transmission pipe 42 leaves the shaping channel pressure relief hole 48 and the shaping channel inlet, the large-diameter section 46 blocks the lifting channel pressure relief hole 412, and the liquid inlet channel 45 is communicated with the lifting channel 411. The liquid in the shaping chamber 57 is vented through shaping passage 49 and shaping passage vent 48.
The bidirectional booster 500 is constructed as shown in fig. 3, 6 and 8, and comprises a piston cylinder 52 and a piston 51, wherein the piston 51 is vertically and slidably installed in the piston cylinder 52, in the embodiment, the upper end of the piston 51 is in threaded connection with the commutator body 41 of the hydraulic commutator 400, and the lower end of the piston cylinder 52 is connected with the shaper 600. The piston 51 includes a piston rod 511 in the middle, and in this embodiment, the piston rod 511 is fixedly connected to the commutator body 41 to form a fixing member. The piston cylinder 52 includes a cylinder bore 53, the cylinder bore 53 being radially spaced outwardly of the piston rod 511, the two forming an annular space. The cylinder liner 53 is fixedly attached to the swage to form a movable member.
The piston rod 511 comprises four piston rod segments 513, which are threaded in a socket from top to bottom. Fixing piece spacing rings 512 are vertically clamped between two adjacent piston rod sections 513, and the fixing piece spacing rings 512 are integrally formed on the piston rod section 513 at the lowest stage. In this embodiment, the uppermost fixture spacer 512 is defined as an upper fixture spacer, the lowermost fixture spacer 512 is defined as a lower fixture spacer, and the two middle fixture spacers 512 are defined as middle fixture spacers. In this embodiment, a seal ring is fixed between the inner circumferential surface of the fixed member spacer 512 and the piston rod segment 513, and a seal ring is also provided between the outer circumferential surface of the fixed member spacer 512 and the cylinder casing 53 for sliding sealing engagement with the cylinder casing 53.
In this embodiment, the four retainer rings 512 separate the annular space between the piston rod 511 and the cylinder 53 into three sub-chambers which are relatively independent from each other.
In this embodiment, the cylinder liner 53 includes four cylinder liner segments 514 that are inserted into each other in a threaded manner from top to bottom, a movable partition ring 54 is vertically clamped between any two adjacent cylinder liner segments 514, the movable partition ring 54 is located between two corresponding fixed partition rings 512, a seal ring is fixed between the outer circumferential surface of the movable partition ring 54 and the cylinder liner segments 514, and a seal ring is arranged between the inner circumferential surface of the movable partition ring 54 and the piston rod 511 for sliding and sealing engagement with the piston rod 511. In this embodiment, moving member spacer ring 54 divides the corresponding sub-chamber into a shaping chamber 57 and a lift chamber 58.
In this embodiment, in order to connect the shaping chambers 57, shaping chamber through holes penetrating up and down are formed in the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54, and since the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54 are clamped up and down, it can be ensured that the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54 do not rotate with the corresponding segment during assembly, and it is ensured that the shaping chamber through holes are penetrated up and down correspondingly. When assembled, rigid shaping tubing 510 is perforated from top to bottom through each shaping chamber and extends to the lower fixture spacer.
In this embodiment, in order to connect the lifting cavities 58, the lifting cavity through holes penetrating up and down are formed in the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54, and since the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54 are clamped up and down, it can be ensured that the upper fixing piece spacer ring, the middle fixing piece spacer ring and each moving piece spacer ring 54 do not rotate along with the corresponding segment during assembly, and it is ensured that the lifting cavity through holes are correspondingly penetrated up and down. During assembly, a rigid lift tube 59 is perforated from top to bottom through each lift chamber and extends to the lower fixture spacer.
In this embodiment, the wall of the shaping pipeline 510 is provided with a shaping pipeline radial opening 56 corresponding to each shaping cavity 57, and the wall of the lifting pipeline 59 is provided with a lifting pipeline path opening 55 corresponding to each lifting cavity 58.
In this embodiment, all be equipped with the sealing washer in the upper and lower orifice department of each perforation, the sealing washer is sealed with the pipeline and is cooperated, prevents that the liquid in two cavities scurries each other.
In this embodiment, the piston rod 511 is formed by a plurality of screw inserts, and the cylinder sleeve 53 is also formed by a plurality of screw inserts, which are all to ensure that the spacer rings do not rotate relatively when assembled, and ensure that the lifting pipe 59 and the shaping pipe 510 can penetrate from top to bottom. In other embodiments, the cylinder sleeve and the piston rod can be fixed in the following manner, but the corresponding spacer ring is not clamped up and down any more, and the spacer ring is welded on the corresponding piston rod or cylinder sleeve after two adjacent segments are assembled. Or, in other embodiments, the piston rod and the cylinder sleeve may be designed to be an integral structure, and the spacer ring may be welded to the corresponding piston rod or cylinder sleeve, but the welding method has the disadvantage that when the piston rod and the cylinder sleeve are longer, the welding is difficult, and even in order to weld the spacer ring, a break needs to be formed in the cylinder sleeve.
In this embodiment, one shaping pipeline is communicated with each shaping cavity, and one lifting pipeline is communicated with each lifting cavity. In other embodiments, the shaping pipeline and the lifting pipeline may both include a main pipeline and a plurality of branch pipelines, the main pipeline is connected to the hydraulic commutator, and the branch pipelines are communicated with the corresponding chambers.
In other embodiments, the number of the shaping chambers and the number of the lifting chambers can be increased or decreased according to actual conditions, but the number is at least two.
In this embodiment, the lower end of the cylinder liner is a necking section, which is provided with an external thread and connected with the shaper.
In the embodiment, the piston is fixed on the hydraulic commutator, and the piston cylinder is fixed on the shaper, in other embodiments, the piston cylinder and the shaper can be interchanged, namely, the piston cylinder is movably sleeved at the lower end of the hydraulic commutator, the lower end of the piston extends downwards and is provided with an external thread and is connected with the shaper, at the moment, a cylinder sleeve of the piston cylinder forms a fixed part, a piston rod of the piston forms a movable part, and other structures are adaptively changed.
In this embodiment, the bidirectional booster 500 forms a multi-stage boosting structure, and the shaping and lifting forces can be increased as much as possible under the condition that the water pressure is not changed.
In this embodiment, the shaping pipe 510 needs to be connected to the shaping channel 49, and the lifting pipe 59 needs to be connected to the lifting channel 411, and the specific connection manner is the same, and this embodiment is described by taking the connection of the shaping pipe 510 and the shaping channel 49 as an example. As shown in fig. 9, the shaping passage 49 penetrates through the lower end of the commutator body 41, a passage fixing tube 519 is welded and fixed in the shaping passage 49, a red copper pad 520 and a passage connecting tube 517 are sequentially arranged at the lower end of the passage fixing tube 519, a passage pressing cap 518 is screwed on the passage fixing tube 519, and the passage pressing cap 518 presses the passage connecting tube 517 and the red copper pad 520 onto the passage fixing tube 519. The upper end of the shaping pipeline 510 penetrates out of the bidirectional booster 500, the red copper pad 520 and the pipeline connecting pipe 516 are sequentially arranged on the shaping pipeline 510 from bottom to top, a pipeline pressing cap 515 is mounted on the shaping pipeline 510 in a threaded mode, and the pipeline connecting pipe 516 and the red copper pad 520 are pressed on the shaping pipeline 510 through the pipeline pressing cap 515. Then, the pipe connection pipe 516 and the channel connection pipe 517 are welded.
The shaper 600 is structured as shown in fig. 9, the shaper 600 of the present embodiment is structured as shown in fig. 9, and the shaper 600 includes an upper connector 61, and the upper connector 61 is threadedly coupled to the piston cylinder 52 of the bidirectional booster 500 during assembly. The shaper 600 further comprises a shaper body 62 connected to the upper joint 61, the upper portion of the shaper body 62 is a cylinder, the lower portion of the shaper body 62 is a cone, a plurality of mounting grooves are formed in the periphery of the shaper body 62, as can be seen from fig. 9, the bottoms of the mounting grooves are arranged from bottom to top and are inclined from inside to outside, steel balls 63 are mounted in the mounting grooves, and the steel balls 63 protrude out of the peripheral surface of the shaper body 62. A stopper 64 is attached to the integrator body 62 to prevent the steel ball 63 from coming off. When the shaper 600 is used, the steel ball 63 is in abutting fit with the inner wall of the sleeve deformation section 11 when the shaper 600 is lowered, the steel ball 63 is pushed upwards by the sleeve deformation section 11 along with downward movement of the shaper 600, the steel ball 63 gradually moves outwards in the radial direction, the height of the steel ball 63 protruding out of the outer peripheral surface of the shaper main body 62 is gradually increased, the overall outer diameter size of the shaper 600 is gradually increased, and the sleeve deformation section is expanded outwards. When the shaper 600 is lifted up, the steel ball 63 moves downwards and retracts under the self-weight, so that the overall outer diameter size of the shaper 600 is gradually reduced and the steel ball is separated from the sleeve deformation section 11. The shaper 600 in the present embodiment is a prior art, and in other embodiments, commercially available shapers may be used.
The method comprises the following steps:
1) c, pipe column descending: according to the monitoring of damaged casing, the inner diameter size of the deformed section 11 of the casing is determined, a shaper 600 with a proper size is selected, the hydraulic commutator 400 is connected with the hydraulic anchor 300 and the oil pipe 200, the hydraulic commutator 400 is connected with the bidirectional booster 500, and the bidirectional booster 500 is connected with the shaper 600. The pipe column is lowered into the casing 100, and after the pipe column meets the resistance in the casing deformation section 11, the pipe column is lowered and pressed for 3 tons, the pipe column is verified to reach the casing deformation section 11, and the pressure transmission pipe 42 is placed at the lower limit position.
2) Shaping: pumping liquid from the oil pipe 200, driving the anchor teeth 35 to move outwards by the liquid to anchor the pipe column on the casing 100, continuously pressurizing the oil pipe 200, pushing the shaper 600 to move downwards by the multi-stage hydraulic cylinder of the bidirectional booster 500 to repair a section of casing, and lifting the chamber 58 to release pressure; then, releasing the pressure of a pressure relief valve which is communicated with the oil pipe 200 and is positioned on the ground, and then releasing the anchoring of the hydraulic anchor 300; and continuing to pull the pipe column down for 3 tons of load, stopping the piston cylinder 52 by the sleeve deformation section in the pipe column pulling process, enabling the piston 51 to be driven to move downwards, extruding the liquid in the shaping chamber 57 into the oil pipe, repeating the steps, and shaping the next section until all the sleeve deformation sections are repaired.
3) Lifting the sleeve: after the casing deformation section 11 is completely repaired, the hydraulic anchor teeth are recovered after the oil pipe is decompressed, the pipe column is released from anchoring, the pipe column is lifted, the hydraulic commutator 400 is communicated with the lifting channel, and meanwhile, the outer diameter of the shaper 600 is reduced, so that the pipe column can be withdrawn from the casing deformation section 11 and lifted out of the shaping pipe column. If the lifting load is too large, liquid is pumped from the oil pipe 200, enters the lifting chamber 58, is decompressed by the shaping chamber 57, lifts the shaper 600 upwards, exits the casing deformation section, and safely lifts out of the shaping string.
4) And after the first-stage shaping is finished, replacing and increasing a shaper with an outer diameter step, and repeating the steps until the inner diameter of the deformed section of the repaired casing reaches the design requirement.
The hydraulic anchor in this embodiment is used to keep other components in the tubular string, except for the shaper, stable during shaping or lifting, and as the length of the oil pipe increases, the oil pipe may bend in the wellbore to some extent. Of course, in other embodiments, the hydraulic anchor may be eliminated if the casing deformation is shallow to ensure that the tubing extends vertically.
In the embodiment, the piston is fixedly connected with the hydraulic commutator, the piston cylinder is fixedly connected with the shaper, in other embodiments, the piston cylinder and the shaper can be interchanged, and after the interchange, the shaping cavity and the lifting cavity also need to be exchanged.
In this embodiment, in step 2), the length of the sleeve deformation section is greater than the single stroke of the bidirectional booster, and therefore downward probing and shaping needs to be performed for multiple times.
In this embodiment, the press cap forms an annular stop.
In this embodiment, the central hole is a central blind hole. In other embodiments, the commutator body can be formed by splicing two parts, the central hole is arranged in the upper part, the whole central hole is a stepped hole with a small upper part and a large lower part, the pressure transmission pipe penetrates into the central hole from bottom to top during assembly, and the lower part of the commutator body is assembled on the upper part from bottom to top to prevent the pressure transmission pipe from being separated. At this time, the pressure transmission pipe is prevented from being separated upwards, and the pressure transmission pipe is a step surface of the central hole.
In this embodiment, inlet channel export, plastic passageway import, lift and pull out the passageway import and be the annular opening, consequently, plastic passageway pressure release hole must be located plastic passageway import below, lifts and pulls out passageway pressure release hole must be located and lifts and pull out passageway import top. In other embodiments, if the inlet of the liquid inlet channel, the inlet of the shaping channel, and the inlet of the lifting channel are single-point openings, the pressure relief holes of the shaping channel may be circumferentially spaced from the inlet of the shaping channel only, and the pressure relief holes of the lifting channel may be circumferentially spaced from the lifting channel only. In this embodiment, the shaping channel pressure relief hole and the lifting channel pressure relief hole together form a pressure relief channel.
In this embodiment, the hydraulic commutator and the bidirectional booster constitute a bidirectional hydraulic booster.
As shown in fig. 11 and 12, the embodiment 2 of the bidirectional hydraulic pressure-increasing device for a hydraulic shaping column of the present invention is different from the above-described embodiments in that the pressure-releasing passage in the present embodiment is a single pressure-releasing hole 74 provided in the commutator body 71, wherein the uplift passage 72 is located above the pressure-releasing hole 74, and the shaping passage 73 is located below the pressure-releasing hole 74. The pressure transfer pipe 75 still includes a small diameter section at the upper end and a large diameter section at the lower end, the pressure transfer pipe 75 has a liquid inlet channel 76 therein, and the liquid inlet channel 76 has a liquid inlet channel outlet at the large diameter section.
When the shaping device is used and shaping is carried out, as shown in fig. 11, the pressure transmission pipe 75 is arranged at the lower limit position, the liquid inlet channel 76 is communicated with the shaping channel 73, the large-diameter section separates the shaping channel 73 from the pressure relief hole 74, and the lifting channel 72 is communicated with the pressure relief hole 74.
When the lifting is performed, as shown in fig. 12, the pressure transmission pipe 75 is placed at the upper limit position, the liquid inlet passage 76 is communicated with the lifting passage 72, the large-diameter section separates the lifting passage 72 from the pressure relief hole 74, and the shaping passage 73 is communicated with the pressure relief hole 74.
Claims (7)
1. The utility model provides a two-way hydraulic pressure booster for hydraulic pressure plastic tubular column which characterized in that: the hydraulic control device comprises a bidirectional booster for applying force to a shaper and a hydraulic commutator for controlling the force application direction of the bidirectional booster;
the bidirectional booster comprises a piston cylinder and a piston which is in sliding seal fit with the piston cylinder along the up-down direction, one of the piston cylinder and the piston is used for being fixedly connected with the shaper, the other one of the piston cylinder and the piston is fixedly connected with the hydraulic commutator, the piston cylinder and the piston are matched to form a relatively independent shaping chamber and a lifting chamber, the shaper is driven to move downwards when liquid is pumped into the shaping chamber, and the shaper is driven to move upwards when the liquid is pumped into the lifting chamber;
the hydraulic commutator comprises a commutator body fixedly connected with the bidirectional booster, a central hole extending up and down is arranged in the commutator body, a pressure transmission pipe is assembled in the central hole in a sliding sealing and upward anti-dropping manner, the upper end of the pressure transmission pipe is used for being connected with an oil pipe, a liquid inlet channel communicated with the oil pipe is arranged in the pressure transmission pipe, and a liquid inlet channel outlet is arranged on the side part of the liquid inlet channel on the pressure transmission pipe;
the commutator main body is also provided with a shaping channel communicated with the shaping chamber and a lifting channel communicated with the lifting chamber, the inlet of the shaping channel and the inlet of the lifting channel of the shaping channel are positioned on the wall of the central hole and are sequentially arranged from bottom to top at intervals, and the commutator main body is also provided with a pressure relief channel for leading out liquid in the central hole for pressure relief;
the pressure transmission pipe is provided with an upper limit position and a lower limit position on the stroke of reciprocating up and down along with the oil pipe, when the pressure transmission pipe is positioned at the lower limit position, the inlet of the shaping channel is communicated with the outlet of the liquid inlet channel and is separated from the pressure relief channel, and the inlet of the lifting channel is communicated with the pressure relief channel and is separated from the outlet of the liquid inlet channel; when the lifting channel is positioned at the upper limit position, the inlet of the shaping channel is communicated with the pressure relief channel and is separated from the outlet of the liquid inlet channel, and the inlet of the lifting channel is communicated with the outlet of the liquid inlet channel and is separated from the pressure relief channel.
2. The bi-directional hydraulic pressure intensifying apparatus for a hydraulic shaping pipe string as set forth in claim 1, wherein: the pressure transmission pipe comprises a small-diameter section at the upper end and a large-diameter section at the lower end, the liquid inlet channel outlet is arranged on the large-diameter section, the central hole is provided with a sealing section in sealing fit with the large-diameter section, the hole wall of the sealing section is provided with the lifting channel inlet and the shaping channel inlet, the pressure release channel comprises a shaping channel pressure release hole and a lifting channel pressure release hole, the two pressure release holes extend in the radial direction, and the shaping channel pressure release hole is positioned below the shaping channel inlet or is circumferentially staggered with the shaping channel inlet so as to be communicated with the shaping channel pressure release hole and the shaping channel through the inner cavity of the central hole when the pressure transmission pipe is positioned at the; the lifting channel pressure relief hole is located above the lifting channel inlet or is circumferentially staggered with the lifting channel inlet, so that the lifting channel pressure relief hole and the lifting channel are communicated through the central hole and the annular space of the small-diameter section when the pressure transmission pipe is located at the lower limit position.
3. The bi-directional hydraulic pressure intensifying apparatus for a hydraulic shaping pipe string as set forth in claim 2, wherein: the inlet channel export, lift and pull out the import of passageway and plastic passageway import and be the annular opening that extends along circumference, plastic passageway pressure release hole is located plastic passageway import below, lifts to pull out passageway pressure release hole and is located and lifts to pull out passageway import top.
4. The bidirectional hydraulic pressure booster for hydraulic shaping strings according to claim 2 or 3, wherein: and the annular stop piece is hermetically assembled above the sealing section in the central hole, the annular stop piece is used for being in stop fit with the annular upper end of the large-diameter section so as to prevent the pressure transmission pipe from being separated upwards, and the small-diameter section penetrates into the annular stop piece and is in sliding sealing fit with the annular stop piece.
5. The bidirectional hydraulic pressure booster for hydraulic shaping strings according to claim 1, 2 or 3, wherein: the piston cylinder comprises a cylinder sleeve, the piston comprises a piston rod which is radially arranged in the cylinder sleeve at intervals, and an annular space is formed between the piston rod and the piston rod; one of the cylinder sleeve and the piston rod is a fixed part fixedly connected with the commutator body, and the other is a movable part fixedly connected with the shaper; at least three fixed part spacing rings are arranged on the fixed part at intervals along the axial direction, and the fixed part spacing rings are in sliding sealing fit with the corresponding peripheral surfaces of the movable parts so as to divide the annular space into at least two sub-chambers which are independent up and down; the movable piece is fixedly provided with a movable piece spacing ring corresponding to each sub-chamber, the movable piece spacing ring is in sliding sealing fit with the corresponding circumferential surface of the fixed piece, and the corresponding sub-chamber is divided into the shaping chamber and the lifting chamber; the bidirectional booster also comprises a shaping pipeline, the shaping pipeline is connected with each shaping cavity, and each shaping cavity is arranged in parallel; the bidirectional booster further comprises lifting pipelines, the lifting pipelines are connected with the lifting cavities, and the lifting cavities are arranged in parallel.
6. The bi-directional hydraulic pressure intensifying apparatus for a hydraulic shaping pipe string as set forth in claim 5, wherein: defining the upper fixing piece spacing ring positioned at the uppermost end in the fixing piece spacing rings, the lower fixing piece spacing ring positioned at the lowermost end, and the middle fixing piece spacing ring positioned between the upper fixing piece spacing ring and the lower fixing piece spacing ring, the upper fixing piece spacing ring, the middle fixing piece spacing ring and each moving piece spacing ring are respectively provided with shaping pipeline through holes which are correspondingly communicated up and down, and lifting pipeline through holes which are correspondingly communicated up and down are also respectively arranged, the shaping pipeline through holes and the lifting pipeline through holes are arranged at intervals along the circumferential direction, the shaping pipeline and the lifting pipeline are both rigid pipes, a shaping pipeline passes through the shaping pipeline through holes from top to bottom, the upper end of the shaping pipeline extends to the upper part of the fixing piece spacing ring, the lifting pipeline passes through the lifting pipeline through holes from top to bottom, the upper end of the lifting pipeline extends to the upper part of the fixing piece spacing ring, the shaping pipeline is provided with shaping pipeline radial holes at the corresponding positions of the shaping cavities on the shaping pipeline, and the lifting pipeline is provided with lifting pipeline radial holes at the corresponding positions of the lifting cavities on; the piston rod and the cylinder sleeve are formed by a plurality of subsection sequential thread insertion sleeves which are sequentially connected from top to bottom, and the upper fixing piece spacing ring, the middle fixing piece spacing ring and each moving piece spacing ring are vertically clamped and fixed between two adjacent subsections.
7. The bi-directional hydraulic pressure intensifying apparatus for a hydraulic shaping pipe string as set forth in claim 6, wherein: the shaping channel and the lifting channel penetrate out of the lower end of the commutator body, channel fixing pipes are fixed in the shaping channel and the lifting channel, and the shaping pipeline and the lifting pipeline are respectively connected with the corresponding channel fixing pipes in a split welding mode.
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| CN201910750835.1A CN110578487B (en) | 2019-08-14 | 2019-08-14 | Two-way hydraulic force increasing device for hydraulic shaping pipe column |
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| CN201910750835.1A CN110578487B (en) | 2019-08-14 | 2019-08-14 | Two-way hydraulic force increasing device for hydraulic shaping pipe column |
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| CN110578487B true CN110578487B (en) | 2021-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2285110C2 (en) * | 2004-07-20 | 2006-10-10 | Саркисов Николай Михайлович | Borehole hydraulic jack |
| US20070074867A1 (en) * | 2005-09-30 | 2007-04-05 | Roger Chancey | Jar device |
| CN201037387Y (en) * | 2007-05-21 | 2008-03-19 | 中国石油化工股份有限公司 | Hydraulic pipe pulling equipment |
| CN101942979B (en) * | 2010-09-01 | 2013-07-10 | 大港油田集团有限责任公司 | Anchoring ball type casing truing unit and truing method thereof |
| CN202832328U (en) * | 2012-07-20 | 2013-03-27 | 中国石油化工股份有限公司 | Hydraulic anchor capable of being closed mechanically and for fixing tubular columns in oil wells and water wells |
| CN206468318U (en) * | 2017-02-09 | 2017-09-05 | 新疆华油油气工程有限公司 | Hydraulic force increasing device and underground hydraulic pressure reinforcement release device |
| CN206468316U (en) * | 2017-02-09 | 2017-09-05 | 新疆华油油气工程有限公司 | Momentum impacts pipe-expanding device |
| CN207332798U (en) * | 2017-10-19 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of casing swage lifting type pressure release discharge device |
| CN208718594U (en) * | 2018-09-20 | 2019-04-09 | 北京大德广源石油技术服务有限公司 | Expand patch device |
| CN209212194U (en) * | 2018-10-09 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of booster that mating coiled tubing is salvaged |
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