CN103291238A - Secondary expansion patching device passing through patching pipe - Google Patents
Secondary expansion patching device passing through patching pipe Download PDFInfo
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- CN103291238A CN103291238A CN2013102288004A CN201310228800A CN103291238A CN 103291238 A CN103291238 A CN 103291238A CN 2013102288004 A CN2013102288004 A CN 2013102288004A CN 201310228800 A CN201310228800 A CN 201310228800A CN 103291238 A CN103291238 A CN 103291238A
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- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a secondary expansion patching device passing through a patching pipe. The secondary expansion patching device comprises a hydraulic system, an expansion pipe and an expansion cone, wherein the outer diameter of the expansion cone is greater than those of the hydraulic system and the expansion pipe. The expansion cone comprises an upper expansion cone and a lower expansion cone, the cone surface of the upper expansion cone is opposite to the cone surface of the lower expansion cone, the cone angle of the upper expansion cone is smaller than the cone angle of the lower expansion cone, the expansion pipe is located between the upper expansion cone and the lower expansion cone, and the hydraulic system can drive the upper expansion cone and the lower expansion cone to conduct relative movement. When the secondary expansion patching device works, the cone angle of the upper expansion cone is smaller and is extruded into the expansion pipe firstly, a horn mouth is formed at the upper end of the expansion pipe, and the secondary expansion patching device is lifted; the expansion pipe is anchored by the original patching pipe through the horn mouth, the secondary expansion patching device continues to be lifted, the lower expansion cone enters the expansion pipe and passes through the expansion pipe, and then secondary patching is completed. In the secondary expansion patching device, the outer diameter of the expansion cone is the largest and is slightly smaller than the inner diameter of the original patching pipe, the outer diameter of the expansion cone is equal to the inner diameter of a secondary patching pipe, the inner diameter of the secondary patching pipe is roughly equal to that of the original patching pipe, and the inner diameter of the obtained secondary patching pipe is relatively large.
Description
Technical field
The present invention relates to the petroleum industry technical field, particularly relate to the reexpansion subsidy device that a kind of mistake is subsidized pipe.
Background technology
In the oilfield development process, down-hole casing often is damaged, and expansion tube subsidy technology is a kind of restorative procedure commonly used, by driving the cone motion in the expansion tube, the diameter of expansion tube is increased, the subsidy down-hole casing, and the expansion tube after the expansion is the subsidy pipe.
Sometimes the damage of down-hole casing continues, and As time goes on a place, also new damage can take place after damaging subsidy, if new damaged location occurs in the below of former subsidy pipe, just needs through former subsidy pipe when carrying out the secondary subsidy.
A kind of typical expansion tube subsidy device as shown in Figure 1, the front end of the connecting rod 1' of expansion gear inserts in the expansion cone 2' tail end, and be connected with expansion cone 2' by screw thread, be the expansion arc 3' of diameter gradual change from big to small in the middle of the expansion cone 2', connecting rod 1' communicates with the centre bore of expansion cone 2'.Expansion tube 4' and pressure cylinder 5' welding, the other end welding end socket 6' of pressure cylinder 5', the end of the centre bore of end socket 6' has groove 7', and the spheroid in the groove 7' has formed exhaust structure, forms pressure chamber 8' between expansion cone 2' front end and the end socket 6'.
When subsidizing, expansion gear down to the position that down-hole casing need be subsidized, is squeezed into highly pressurised liquid by the centre bore of connecting rod 1' and expansion cone 2' in pressure chamber 8', the gas in the pressure chamber 8' is discharged by outlet valve, seals outlet valve then; Highly pressurised liquid in the pressure chamber 8' will promote expansion cone 2', expansion cone 2' and connecting rod 1' are slided to the direction away from end socket 6', and in sliding process, the tube wall of the expansion tube 4' of expansion arc 3' of expansion cone 2' is exerted pressure, make expansion tube 4' produce plastic strain, reach the purpose of expansion.
In the expansion tube subsidy device, the external diameter of pressure chamber 8' is the maximum gauge of package unit, the external diameter that equals expansion cone 2' adds the wall thickness of the pressure chamber 8' of twice, pressure chamber 8' will bear high pressure, wall thickness can not be less than 5 millimeters, expansion cone 2' is the main tool that expansion tube 4' is expanded, and the internal diameter of subsidy pipe equaled the external diameter of expansion cone 2' substantially after expansion tube 4' expanded.
When carrying out the subsidy of subsidy pipe secondary, secondary subsidy device need pass through from former subsidy pipe, the external diameter of its pressure chamber must be less than the internal diameter of former subsidy pipe, then the external diameter of the interior expansion cone of pressure chamber is less than the internal diameter of former subsidy pipe, after making that secondary is subsidized, the internal diameter of secondary subsidy pipe is less than the internal diameter of former subsidy pipe, the oil exploitation work that influence is follow-up.
Therefore, how increasing the internal diameter of the secondary subsidy pipe of subsidy pipe, is that those skilled in the art is badly in need of the technical problem that solves at present.
Summary of the invention
The purpose of this invention is to provide a kind of mistake and subsidize the reexpansion subsidy device of pipe, when this reexpansion subsidy device carried out the subsidy of subsidy pipe secondary, the internal diameter of secondary subsidy pipe was bigger.
In order to realize above-mentioned technical purpose, the invention provides a kind of mistake and subsidize the reexpansion subsidy device of pipe, comprise hydraulic system, expansion tube and expansion cone, the external diameter maximum of expansion cone described in the three, described expansion cone comprises expand awl and the awl that expands down, and the described conical surface of going up expand awl and the described awl that expands down is relative, and the described coning angle of the awl that expands that goes up is less than the described coning angle that expands and bore down, described expansion tube is between the two, and described hydraulic system can drive described go up expand awl and the described awl relative motion of expanding down.
Preferably, described hydraulic system comprises central tube and is sleeved on slip cap on the described central tube, and its bonding surface had the hydraulic cavities of variable volume when the two slided relatively, and described central tube has the intercommunicating pore of described hydraulic cavities; The lower end of described central tube connects the described awl that expands down, and the described tapered sleeve that expands of going up is contained in the described central tube outside, replaces the lower end of described slip cap.
Preferably, described hydraulic system is the two-stage hydraulic system, comprising: the lower hydraulic pressure chamber that the last hydraulic cavities that upper center tube and last slip cap constitute, lower center tube and lower slider cover constitute; The lower end of described upper center tube connects the upper end of described lower center tube, and the lower end of described lower center tube connects the described awl that expands down; The described awl that expands of going up is replaced the lower end that described lower slider is overlapped, and described lower end of going up slip cap is replaced in the upper end of described lower slider cover.
Preferably, the upper end of described upper center tube connects top connection, the external diameter of described top connection is greater than the external diameter of described upper center tube, the described inner ring of going up slip cap is stepped, constitute the described hydraulic cavities that goes up with the outer ring of described top connection and described upper center tube, described upper center tube has described first intercommunicating pore of going up hydraulic cavities.
Preferably, the upper end of described lower center tube is greater than body, the internal thread of its upper end is threaded with the lower end of described upper center tube, and the inner ring of described lower slider cover and the outer ring of described lower center tube constitute described lower hydraulic pressure chamber, and described lower center tube has second intercommunicating pore of described lower hydraulic pressure chamber.
Preferably, the aperture of the centre bore of described upper center tube and described lower center tube equates, the described external diameter of going up slip cap and described lower slider cover equates, and all less than the described maximum outside diameter of going up the awl that expands, the described maximum outside diameter of the awl that expands of going up is less than the maximum outside diameter of the described awl that expands down.
Preferably, the maximum outside diameter of the described awl that upward expands is less than 0.5 millimeter of described bloated maximum outside diameter of boring down, and the described coning angle of the awl that expands that goes up is less than coning angle 10 degree of bloated awl under described.
Preferably, also comprise pull bar, the lower end of described lower center tube connects the upper end of described pull bar, and the described awl that expands is down installed in the lower end of described pull bar, and described pull bar is arranged in the through hole of described expansion tube.
Preferably, described go up slip cap and described lower slider overlap the two one of have a pressure relief vent, described when going up expand awl and the described awl that expands down and relatively moving predetermined stroke, described pressure relief vent can be described upward hydraulic cavities or described lower hydraulic pressure chamber release.
Preferably, described go up to expand awl and described expanding are down bored the predetermined stroke that relatively moves more than or equal to 50 millimeters.
Mistake provided by the invention is subsidized the reexpansion subsidy device of pipe, comprise hydraulic system, expansion tube and expansion cone, the external diameter maximum of expansion cone among the three, expansion cone comprises expand awl and the awl that expands down, it is relative with the conical surface of the awl that expands down to go up the awl that expands, go up the coning angle of the awl that expands less than the coning angle of the awl that expands down, expansion tube is between the two, and hydraulic system can drive expand awl and the awl relative motion of expanding down.
During the work of reexpansion subsidy device, arrive the position that needs the secondary subsidy by former subsidy pipe earlier, the primer fluid pressing system drives and goes up expand awl and the awl relative motion of expanding down then, it is relative with the conical surface of the awl that expands down to go up the awl that expands, during the two relative motion, the conical surface of the two is the extrusion expansion pipe in opposite directions, go up the coning angle of the awl that expands less than the coning angle of the awl that expands down, go up to expand awl than being easier to get into expansion tube, go up expand awl and expand down bore relative motion one segment distance after, the upper end of expansion tube is by one section horn mouth identical with last bloated awl external diameter of last bloated awl expansion, carry this device then, expansion tube will along with this install up, when the horn mouth upper surface with after former subsidy pipe lower surface contacts, expansion tube is anchored, carry this device in the continuation, the awl that expands down will be drawn into expansion tube, and after following bloated awl was pulled out expansion tube fully, subsidy was finished.
The external diameter maximum of expansion cone in this device, the external diameter of expansion cone are slightly less than the internal diameter of former subsidy pipe can be smoothly by former subsidy pipe, and the external diameter of expansion cone is the internal diameter of secondary subsidy pipe, and it is basic identical that then secondary is subsidized the internal diameter of the internal diameter of pipe and former subsidy pipe.When this reexpansion subsidy device carried out the subsidy of subsidy pipe secondary, the internal diameter of secondary subsidy pipe was bigger, is of value to follow-up oil extraction operation.
Concrete, hydraulic system comprises central tube and is sleeved on slip cap on the central tube, and its bonding surface had the hydraulic cavities of variable volume when the two slided relatively, and central tube has the intercommunicating pore of hydraulic cavities; The lower end of central tube connects the awl that expands down, and the tapered sleeve that upward expands is contained in the central tube outside, replaces the lower end of slip cap.
Hydraulic system charges into highly pressurised liquid by the intercommunicating pore of central tube in hydraulic cavities, when the hydraulic cavities volume increases, slip cap along central tube to lower slider, promoting to go up the awl that expands simultaneously moves down, go up when expanding awl and expanding the awl relative motion down, the taper seat of the two is the extrusion expansion pipe in opposite directions, goes up the less expansion tube of can being got into earlier of coning angle of the awl that expands, behind the mobile segment distance of the awl that go up to expand, on carry this device and finish the secondary subsidy.
Further, hydraulic system is the two-stage hydraulic system, comprising: the lower hydraulic pressure chamber that the last hydraulic cavities that upper center tube and last slip cap constitute, lower center tube and lower slider cover constitute; The lower end of upper center tube connects the upper end of lower center tube, and the lower end of lower center tube connects the awl that expands down; Go up the awl that expands and replace the lower end of lower slider cover, the lower end of slip cap is replaced in the upper end of lower slider cover.
The relative motion of going up expand awl and the awl that expands down also can be driven by the two-stage hydraulic system, and when the volume of last hydraulic cavities and lower hydraulic pressure chamber increased, last slip cap and lower slider cover promoted to go up the awl that expands simultaneously and move down.
In a kind of preferred mode, the maximum outside diameter of the awl that go up to expand is gone up the coning angle of the awl that expands less than coning angle 10 degree of the awl that expands down less than 0.5 millimeter of the maximum outside diameter of the awl that expands down, and the maximum outside diameter of the awl that then expands down is the maximum outside diameter of whole device.
Further, last slip cap and lower slider overlap the two one of have a pressure relief vent, when going up expand awl and the awl that expands down and relatively moving predetermined stroke, pressure relief vent can be last hydraulic cavities or lower hydraulic pressure chamber release.
Expansion tube upper end is by behind one section horn mouth of last bloated awl expansion, and pressure relief vent is last hydraulic cavities or lower hydraulic pressure chamber release, carries this device on then, the awl that expands is down drawn in expansion tube, make expansion tube generation expanded radially, the awl that expands is down finished secondary subsidy work fully by behind the expansion tube.
Description of drawings
Fig. 1 is a kind of structural representation of typical expansion tube subsidy device;
Fig. 2 subsidizes the structural representation of a kind of specific embodiment of reexpansion subsidy device of pipe for mistake provided by the present invention;
Fig. 3 is the structural representation that the hydraulic system of device is subsidized in reexpansion shown in Figure 2;
Fig. 4 is first working state schematic representation that device is subsidized in reexpansion shown in Figure 2;
Fig. 5 is second working state schematic representation that device is subsidized in reexpansion shown in Figure 2.
Wherein, the Reference numeral among Fig. 1 is as follows:
Connecting rod 1'; Expansion cone 2'; Expansion arc 3'; Expansion tube 4'; Pressure cylinder 5'; End socket 6'; Groove 7'; Pressure chamber 8';
Reference numeral among Fig. 2 to Fig. 5 is as follows:
First intercommunicating pore 161; Second intercommunicating pore 162;
The specific embodiment
Core of the present invention provides the reexpansion subsidy device that a kind of mistake is subsidized pipe, and when this reexpansion subsidy device carried out the subsidy of subsidy pipe secondary, the internal diameter of secondary subsidy pipe was bigger.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2 to Fig. 5, Fig. 2 subsidizes the structural representation of a kind of specific embodiment of reexpansion subsidy device of pipe for mistake provided by the present invention, Fig. 3 is the structural representation that the hydraulic system of device is subsidized in reexpansion shown in Figure 2, Fig. 4 is first working state schematic representation that device is subsidized in reexpansion shown in Figure 2, and Fig. 5 is second working state schematic representation that device is subsidized in reexpansion shown in Figure 2.
In a kind of concrete embodiment, the invention provides a kind of mistake and subsidize the reexpansion subsidy device of pipe, comprise hydraulic system, expansion tube 2 and expansion cone 3, the external diameter maximum of expansion cone 3 among the three, expansion cone 3 comprises expand awl 31 and the awl 32 that expands down, and it is relative with the conical surface of the awl 32 that expands down to go up the awl 31 that expands, and goes up the coning angle of the awl 31 that expands less than the coning angle of the awl 32 that expands down, expansion tube 2 is between the two, and hydraulic system can drive expand awl 31 and awl 32 relative motions of expanding down.
During this reexpansion subsidy device work, arrive the position that down-hole casing 5 needs the secondary subsidy by former subsidy pipe 4 earlier, the primer fluid pressing system drives and goes up expand awl 31 and awl 32 relative motions of expanding down then, it is relative with the conical surface of the awl 32 that expands down to go up the awl 31 that expands, and expansion tube 2 is between the two, and during the two relative motion, the conical surface of the two is extrusion expansion pipe 2 in opposite directions, because the coning angle of last bloated awl 31 less than the coning angle of the awl 32 that expands down, goes up the awl 31 that expands than being easier to get into expansion tube 2; After going up expand awl 31 and awl 32 relative motions one segment distance that expands down, the upper end of expansion tube 2 is by one section horn mouth identical with last bloated awl 31 external diameters of last bloated awl 31 expansions; Carry whole device then, expansion tube 2 will install uply along with this, manage after 4 lower surfaces contact with former subsidy when the horn mouth upper surface, and expansion tube 2 is anchored; Carry this device in the continuation, the awl 32 that expands down will be drawn into expansion tube 2, make expansion tube 2 that expanded radially take place, and the awl 32 that expands down is fully by behind the expansion tube 2, and the secondary subsidy is finished.
The external diameter maximum of expansion cone 3 in this device, when the external diameter of expansion cone 3 is slightly less than the internal diameter of former subsidy pipe 4, whole device can be smoothly by former subsidy pipe 4, and the external diameter of expansion cone 3 is the internal diameter of secondary subsidy pipe 6, and then the internal diameter of the internal diameter of secondary subsidy pipe 6 and former subsidy pipe 4 is basic identical.When this reexpansion subsidy device carried out the subsidy of subsidy pipe secondary, the internal diameter of secondary subsidy pipe 6 is bigger, be of value to normally carrying out of operations such as follow-up oil recovery, volume increase, can realize with former subsidy bore basic identically because of secondary subsidy bore, guarantee that the downhole tool of the original dimension series of oil-water well is implementing still can to continue normal use after the secondary subsidy.
Concrete, hydraulic system comprises central tube 11 and is sleeved on slip cap 12 on the central tube 11, and its bonding surface had the hydraulic cavities 13 of variable volume when the two slided relatively, and central tube 11 has the intercommunicating pore of hydraulic cavities 13; The lower end of central tube 11 connects the awl 32 that expands down, goes up the awl 31 that expands and is sleeved on central tube 11 outsides, replaces the lower end of slip cap 12.
During this reexpansion subsidy device work, hydraulic system charges into highly pressurised liquid by the intercommunicating pore of central tube 11 in hydraulic cavities 13, when the volume of hydraulic cavities 13 increases, slip cap 12, promotes to go up the awl 31 that expands simultaneously and moves down to lower slider along central tube 11, goes up when expanding awl 31 and expanding awl 32 relative motions down, the taper seat of the two is extrusion expansion pipe 2 in opposite directions, the coning angle of awl 31 of go up expanding is less can be got into expansion tube 2 earlier, after going up the awl 31 that expands and moving a segment distance, on carry this device and finish the secondary subsidy.
A kind of preferred embodiment in, the relative motion of going up expand awl 31 and the awl 32 that expands down also can be driven by the two-stage hydraulic system, also can be the multistage hydraulic system, wherein, a kind of concrete structure of two-stage hydraulic system comprises: the lower hydraulic pressure chamber 132 that the last hydraulic cavities 131 that upper center tube 111 and last slip cap 121 constitute, lower center tube 112 and lower slider cover 122 constitute; The lower end of upper center tube 111 connects the upper end of lower center tube 112, and the lower end of lower center tube 112 connects the awl 32 that expands down; Go up the awl 31 that expands and replace the lower end of lower slider cover 122, the lower end of slip cap 121 is replaced in the upper end of lower slider cover 122.
During the two-stage hydraulic work system, when the volume of last hydraulic cavities 131 and lower hydraulic pressure chamber 132 increased, last slip cap 121 and lower slider cover 122 promoted to go up the awl 31 that expands simultaneously and move down, and the two-stage hydraulic system can produce bigger active force.
In the further concrete embodiment, the upper end of upper center tube 111 connects top connection 15, the external diameter of top connection 15 is greater than the external diameter of upper center tube 111, the inner ring of last slip cap 121 is stepped, constitute upward hydraulic cavities 131 with the outer ring of top connection 14 and upper center tube 111, upper center tube 111 has first intercommunicating pore 161 of last hydraulic cavities 131.
The inner ring of last slip cap 121 can arrange a step, and two steps also can be set, and as shown in Figure 3, at the bonding surface of last slip cap 121 and top connection 14 and upper center tube 111 sealing ring is set, and hydraulic cavities 131 in the sealing.Highly pressurised liquid can enter hydraulic cavities 131 by first intercommunicating pore 161, and when the volume of last hydraulic cavities 131 increased, last slip cap 121 moved down along upper center tube 111.
Further in the concrete embodiment, the upper end of lower center tube 112 is greater than body, the internal thread of its upper end is threaded with the lower end of upper center tube 111, the inner ring of lower slider cover 122 and the outer ring of lower center tube 112 constitute lower hydraulic pressure chamber 132, and lower center tube 112 has second intercommunicating pore 162 of lower hydraulic pressure chamber 132.
The outer ring of lower center tube 112 can arrange a step, and two steps also can be set, and as shown in Figure 3, sealing ring is set, sealing lower hydraulic pressure chamber 132 at the bonding surface of lower slider cover 122 and lower center tube 112.Highly pressurised liquid can enter lower hydraulic pressure chamber 132 by second intercommunicating pore 162, and when the volume of lower hydraulic pressure chamber 132 increased, lower slider cover 122 moved down along lower center tube 112.
Concrete, the aperture of the centre bore of upper center tube 111 and lower center tube 112 equates that the external diameter of last slip cap 121 and lower slider cover 122 equates, and all less than the maximum outside diameter of last bloated awl 31, goes up the maximum outside diameter of the awl 31 that expands less than the maximum outside diameter of the awl 32 that expands down.
During the two-stage hydraulic work system, highly pressurised liquid enters hydraulic cavities 131 and lower hydraulic pressure chamber 132 respectively by first intercommunicating pore 161 and second intercommunicating pore 162, and last slip cap 121 and lower slider cover 122 move down simultaneously, and the awl 31 that promotes upward to expand moves down.
In the another kind of concrete embodiment, the maximum outside diameter of going up the awl 31 that expands can be less than 0.5 millimeter of the maximum outside diameter of the awl 32 that expands down, and the coning angle that goes up the awl 31 that expands can be less than coning angle 10 degree of the awl 32 that expands down.
The maximum outside diameter of this device is the face of cylinder of the awl 32 that expands down, 0.5 millimeter～1 millimeter of 4 internal diameter are managed less than former subsidy in the face of cylinder of bloated awl 32 down, the length on this face of cylinder is no more than 100 millimeters, this device is easy to by former subsidy pipe 4, arrive the precalculated position of down-hole casing 5 down, the internal diameter of secondary subsidy pipe 6 is less than 0.5 millimeter～1 millimeter of the internal diameter of former subsidy pipe 4.For fear of overlapping with former subsidy pipe 4, when calculating the precalculated position, can reserve a segment distance.
The active force that hydraulic system produces makes to go up and expands awl 31 and expand awl 32 down in opposite directions during extrusion expansion pipe 2 that the angle that goes up awl 31 coning angles that expand is less, and external diameter is also smaller, makes that going up the awl 31 easier quilts that expand gets into expansion tube 2.
Concrete, reexpansion subsidy device can also comprise pull bar 14, and the awl 32 that expands is down installed in the upper end of the lower end cylinder lever connecting rod 14 of lower center tube 112, the lower end of pull bar 14, and pull bar 14 is arranged in the through hole of expansion tube 2.As shown in Figure 2, lower center tube 112 is installed the awl 32 that expands down by pull bar 14, can shorten the length of lower center tube 112, and the length of lower center tube 112 satisfies the stroke of going up the awl 31 that expands and gets final product.
In another preferred embodiment, last slip cap 121 and lower slider cover 122 the two one of have pressure relief vent 17, when going up expand awl 31 and the awl 32 that expands down and relatively moving predetermined stroke, pressure relief vent 17 can be last hydraulic cavities 131 or lower hydraulic pressure chamber 132 releases.
When the awl 31 that upward expands relatively moves predetermined stroke with following bloated awl 32, pressure relief vent 17 is through the sealing ring of last hydraulic cavities 131 or lower hydraulic pressure chamber 132, the pressure of last hydraulic cavities 131 or lower hydraulic pressure chamber 132 descends suddenly, this moment, expansion tube 2 upper ends were by the last bloated awl 31 expansions horn mouth identical with predetermined stroke, after pressure is laid down, on carry this device, finish secondary subsidy.
As shown in Figure 3, pressure relief vent 17 is positioned on the lower slider cover 122, and behind the sealing ring of pressure relief vent 17 through lower hydraulic pressure chamber 132 upsides, the pressure of lower hydraulic pressure chamber 132 can descend suddenly.
Concrete, go up the awl 31 that expands and can be 50 millimeters with awl 32 predetermined stroke that relatively move that expand down, also can be greater than 50 millimeters.When the stroke of last bloated awl 31 reached the predetermined stroke of design, last hydraulic cavities 131 or lower hydraulic pressure chamber 132 releases then, got final product and carry this device.
More than mistake provided by the present invention is subsidized pipe reexpansion subsidy device be described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a mistake is subsidized the reexpansion subsidy device of pipe, comprise hydraulic system, expansion tube (2) and expansion cone (3), it is characterized in that, the external diameter maximum of expansion cone described in the three (3), described expansion cone (3) comprises expand awl (31) and the awl (32) that expands down, the described bloated awl (31) of is relative with the conical surface of the described awl (32) that expands down, the described coning angle of the awl (31) that expands that goes up is less than the coning angle of the described awl (32) that expands down, described expansion tube (2) is between the two, and described hydraulic system can drive described go up expand awl (31) and described awl (32) relative motion of expanding down.
2. mistake as claimed in claim 1 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, described hydraulic system comprises central tube (11) and is sleeved on slip cap (12) on the described central tube (11), its bonding surface had the hydraulic cavities (13) of variable volume when the two slided relatively, and described central tube (11) has the intercommunicating pore of described hydraulic cavities (13); The lower end of described central tube (11) connects the described awl (32) that expands down, and the described awl (31) that expands of going up is sleeved on described central tube (11) outside, replaces the lower end of described slip cap (12).
3. mistake as claimed in claim 2 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, described hydraulic system is the two-stage hydraulic system, comprising: the lower hydraulic pressure chamber (132) that the last hydraulic cavities (131) that upper center tube (111) and last slip cap (121) constitute, lower center tube (112) and lower slider cover (122) constitute; The lower end of described upper center tube (111) connects the upper end of described lower center tube (112), and the lower end of described lower center tube (112) connects the described awl (32) that expands down; The described awl (31) that upward expands is replaced the lower end of described lower slider cover (122), and described lower end of going up slip cap (121) is replaced in the upper end of described lower slider cover (122).
4. mistake as claimed in claim 3 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, the upper end of described upper center tube (111) connects top connection (15), the external diameter of described top connection (15) is greater than the external diameter of described upper center tube (111), the described inner ring of going up slip cap (121) is stepped, constitute the described hydraulic cavities (131) that goes up with the outer ring of described top connection (14) and described upper center tube (111), described upper center tube (111) has described first intercommunicating pore (161) of going up hydraulic cavities (131).
5. mistake as claimed in claim 3 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, the upper end of described lower center tube (112) is greater than body, the internal thread of its upper end is threaded with the lower end of described upper center tube (111), the outer ring of the inner ring of described lower slider cover (122) and described lower center tube (112) constitutes described lower hydraulic pressure chamber (132), and described lower center tube (112) has second intercommunicating pore (162) of described lower hydraulic pressure chamber (132).
6. subsidize the reexpansion subsidy device of pipe as each described mistake of claim 3 to 5, it is characterized in that, the aperture of the centre bore of described upper center tube (111) and described lower center tube (112) equates, the described external diameter of going up slip cap (121) and described lower slider cover (122) equates, and all less than the described maximum outside diameter of going up the awl (31) that expands, the described maximum outside diameter of the awl (31) that expands of going up is less than the maximum outside diameter of the described awl (32) that expands down.
7. mistake as claimed in claim 6 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, 0.5 millimeter of the maximum outside diameter that described bloated maximum outside diameter of boring (31) is bored (32) less than expanding under described, described bloated coning angle of boring (31) is spent less than described bloated coning angle 10 of boring (32) down.
8. mistake as claimed in claim 7 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, also comprise pull bar (14), the lower end of described lower center tube (112) connects the upper end of described pull bar (14), the described awl (32) that expands is down installed in the lower end of described pull bar (14), and described pull bar (14) is arranged in the through hole of described expansion tube (2).
9. subsidize the reexpansion subsidy device of pipe as each described mistake of claim 3 to 5, it is characterized in that, described go up slip cap (121) and described lower slider cover (122) the two one of have a pressure relief vent (17), when described go up to expand awl (31) and the described awl (32) that expands down relatively moved predetermined stroke, described pressure relief vent (17) can be described upward hydraulic cavities (131) or described lower hydraulic pressure chamber (132) release.
10. mistake as claimed in claim 8 is subsidized the reexpansion subsidy device of pipe, it is characterized in that, describedly goes up expand awl (31) and described expanding down and bores predetermined stroke that (32) relatively move more than or equal to 50 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228800.4A CN103291238B (en) | 2013-06-08 | 2013-06-08 | A kind of reexpansion patch device crossing patching tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228800.4A CN103291238B (en) | 2013-06-08 | 2013-06-08 | A kind of reexpansion patch device crossing patching tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103291238A true CN103291238A (en) | 2013-09-11 |
| CN103291238B CN103291238B (en) | 2015-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790537A (en) * | 2014-01-22 | 2014-05-14 | 胜利油田现河工贸有限责任公司 | Tensioner for repairing lining oil pipe and repair technology thereof |
| CN104831112A (en) * | 2015-05-19 | 2015-08-12 | 无锡源创机械科技有限公司 | Copper-based memory alloy mended and patched pipe as well as preparation method, mending and patching method and application thereof |
| CN108104754A (en) * | 2017-05-09 | 2018-06-01 | 中国石油天然气股份有限公司 | Casing patching device and method |
| CN109432871A (en) * | 2018-12-26 | 2019-03-08 | 吴联星 | Filter core positioning tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103790537A (en) * | 2014-01-22 | 2014-05-14 | 胜利油田现河工贸有限责任公司 | Tensioner for repairing lining oil pipe and repair technology thereof |
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| CN104831112A (en) * | 2015-05-19 | 2015-08-12 | 无锡源创机械科技有限公司 | Copper-based memory alloy mended and patched pipe as well as preparation method, mending and patching method and application thereof |
| CN108104754A (en) * | 2017-05-09 | 2018-06-01 | 中国石油天然气股份有限公司 | Casing patching device and method |
| CN109432871A (en) * | 2018-12-26 | 2019-03-08 | 吴联星 | Filter core positioning tube |
| CN109432871B (en) * | 2018-12-26 | 2021-10-29 | 吴联星 | Filter element positioning cylinder |
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