CN106894795A - A kind of perforating gun release nipple - Google Patents
A kind of perforating gun release nipple Download PDFInfo
- Publication number
- CN106894795A CN106894795A CN201510963570.5A CN201510963570A CN106894795A CN 106894795 A CN106894795 A CN 106894795A CN 201510963570 A CN201510963570 A CN 201510963570A CN 106894795 A CN106894795 A CN 106894795A
- Authority
- CN
- China
- Prior art keywords
- perforating gun
- mandrel
- hole
- metal sleeve
- release nipple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000002445 nipple Anatomy 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 57
- 210000000078 claw Anatomy 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910001051 Magnalium Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Adornments (AREA)
Abstract
The present invention proposes a kind of perforating gun release nipple, including：Mandrel；Top connection, is set in the outside of the mandrel, sets fluted on inwall；Metal sleeve is can dissolve, the mandrel periphery is set in, is arranged between the mandrel and top connection；Lower contact, it is engaged with the top connection, including elastic card claw, the free end of the elastic card claw is extended between the top connection and dissolvable metal sleeve, the convex portion with the fit depressions is provided with the free end, the convex portion is corresponding with the position of the dissolvable metal sleeve；Liquid-through hole is provided with the lower contact, the liquid-through hole can be by the inside that the release nipple is led into for dissolving the liquid of the dissolvable metal sleeve outside the release nipple.Perforating gun release nipple of the invention loses gun joint relative to prior art, can just realize losing rifle without mechanicals efforts, improves the success rate that perforating gun loses rifle.
Description
Technical field
The present invention relates to oil field development equipment, more particularly to a kind of perforating gun release nipple.
Background technology
Perforation is used and loses rifle technique in the development process in current many oil fields, it is possible to reduce completion time and completion thing
Therefore, reduce shaft building cost.But the accident for losing rifle failure is repeatedly occurred in that, oil well output is reduced, hampered
Oil field is normally developed, it has to abandons, using rifle technique is lost, perforating gun being proposed into ground after perforation, increased work
The danger of industry, increased cost, extend well construction period.
Mainly by gun joint is lost, lose the cardinal principle of gun joint is existing rifle technique of losing：Contractile elastic card claw
Perforating gun is blocked using the protrusion of claw and the built-in groove fit of oil connection, it is spacing to be placed in elastic card claw
Portion prevents claw from shrinking.After perforation, the high-pressure fluid of well is entered in perforating gun by well, and highly pressurised liquid is pushed away
Moved on dynamic stop collar, because stop collar has gone up shifting, elastic card claw loses and limits and leading in perforating gun gravity
Draw lower appearance to shrink, the protrusion of elastic card claw departs from the groove of oil connection, and perforating gun falls under gravity
Enter predetermined well, it is achieved thereby that perforating gun loses the purpose of rifle automatically after perforation.
Existing to lose all mechanical structure of gun joint, main controlling organization depends on hydraulic drive.But hydraulic thrust
It is dynamic higher for sealing, requirement on machining accuracy.If stop collar upper-lower seal fails, although stop collar is upper and lower
Two ends are acted on by highly pressurised liquid simultaneously, but stop collar will not be moved；If stop collar is in contact with stop collar
Structure machining accuracy it is not high enough, then stop collar may be stuck.Above-mentioned two situations can cause the stop collar can not
Moved by design, elastic card claw can not shrink under stop collar effect, and perforating gun cannot depart from oil connection, lead
Rifle failure is lost in cause.
The content of the invention
The technical problems to be solved by the invention are to lose gun joint in order to overcome mechanical structure of the prior art
In the presence of the deficiency that cannot lose rifle.
Regarding to the issue above, the present invention proposes a kind of perforating gun release nipple, including：Mandrel；Top connection,
The outside of the mandrel is set in, sets fluted on inwall；Metal sleeve is can dissolve, the mandrel is set in
Periphery, is arranged between the mandrel and top connection；Lower contact, is engaged with the top connection, including elasticity
Claw, the free end of the elastic card claw is extended between the top connection and dissolvable metal sleeve, it is described from
By being provided with the convex portion with the fit depressions on end, the position of the convex portion and the dissolvable metal sleeve
It is corresponding；Liquid-through hole is provided with the lower contact, the liquid-through hole can be by the use outside the release nipple
The inside of the release nipple is led into the liquid for dissolving the dissolvable metal sleeve.
Perforating gun release nipple of the invention, it include lower contact for being connected with perforating gun and under
Top connection that joint socket-connects and the mandrel being socketed with top connection and lower contact.It is provided with the inwall of top connection
Groove.Lower contact includes the elastic card claw with fit depressions.Elastic card claw includes free end.Set on free end
It is equipped with the convex portion with fit depressions.Elastic card claw is mounted by the convex portion and groove, so as to realize lower contact with
The connection of top connection.Dissolvable metal sleeve is arranged with mandrel.Can dissolve metal sleeve is used to compress elastic card
The free end of pawl, during convex portion compressed into groove, it is ensured that the connective stability of lower contact and top connection.Needing
When abandoning perforating gun, the liquid for dissolving dissolvable metal sleeve can be by the liquid-through hole in lower contact simultaneously
Dissolving can dissolve metal sleeve.After can dissolve metal sleeve dissolving, the supporting role to elastic card claw is lost, from
And under the Action of Gravity Field of the components such as lower contact, mandrel and perforating gun, the convex portion of elastic card claw is from top connection
Groove is deviate from, and then lower contact, mandrel and perforating gun are released.Perforating gun release nipple of the invention is relative
Gun joint is lost in tradition, can just realize losing rifle without mechanicals efforts, improve the success rate that perforating gun loses rifle.
In one embodiment, the lower contact includes the first shoulder hole and with diameter greater than first shoulder hole
The second shoulder hole, the mandrel is threadedly coupled with first shoulder hole, the mandrel and second ladder
The gap being connected with the liquid-through hole is formed between the hole wall in hole.The gap is conducive to being entered into from liquid-through hole
Liquid inside release nipple runs through and is contacted with dissolvable metal sleeve.
In one embodiment, be arranged with spacing collar on the mandrel, the spacing collar be arranged on it is described can
Between dissolving metal sleeve and lower contact.Spacing collar can form spacing to can dissolve metal sleeve, and preventing can
Dissolving metal sleeve departs from the support to elastic card claw along the axial direction movement of mandrel.
In one embodiment, the axial direction along the spacing collar is provided with the outer surface of the spacing collar
The guiding groove of extension, the guiding groove is connected with the gap.Guiding groove can lead out into mandrel and
The liquid in gap between the hole wall of two shoulder holes flows through spacing collar.
In one embodiment, restraining position ring block is arranged on the mandrel, the dissolvable metal sleeve is arranged on institute
State between spacing ring and the spacing collar.Spacing ring is prevented from can dissolve axial direction side of the metal sleeve along mandrel
Depart from the support to elastic card claw to mobile, improve the positional stability that can dissolve metal sleeve.
In one embodiment, the lower contact also includes the 3rd ladder with diameter greater than second shoulder hole
Hole, the end of the spacing collar inserts the 3rd shoulder hole and seated connection is in second shoulder hole and the 3rd rank
On step surface between terraced hole.Spacing collar is limited by lower contact, and positional stability is good.
In one embodiment, the opening of the liquid-through hole is arranged on the end face of the lower contact, is conducive to liquid
Body is flowed into the inside of release nipple from the inside of perforating gun.
In one embodiment, the dissolvable metal sleeve is magnadure sleeve.Magnadure sleeve can
Solubility property is good, it is ensured that favorably accomplish the work of release perforating gun.
In one embodiment, it is provided with clad on the outer surface of magnadure sleeve.Clad can be effective
The rate of dissolution of magnadure sleeve is controlled, while also improving the rigidity of magnadure sleeve, bearing capacity is lifted.
In one embodiment, the material of the clad is nickel, copper or zinc, conveniently uses hydrogen reduction technology
By in above-mentioned metallic cover to the surface of magnadure sleeve.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.
Fig. 1 is the overall structure diagram of the perforating gun release nipple of the embodiment of the present invention.
Fig. 2 is the close-up schematic view at A in Fig. 1.
Fig. 3 is the close-up schematic view at B in Fig. 1.
Fig. 4 is the structural representation of the spacing collar of the embodiment of the present invention.
Fig. 5 is dissolving situation schematic diagram of the magnadure of the embodiment of the present invention in KCl solution.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, the perforating gun release nipple 10 of the embodiment of the present invention, including mandrel 11, it is arranged on core
The plug 12 of the one end of axle 11, the top connection 13 of the tubular being set in outside mandrel 11 and top connection 13 match
The lower contact 14 of conjunction, the dissolvable metal sleeve 15 being set on mandrel 11.
As shown in Figure 1 and Figure 2, a part for lower contact 14 is inserted into top connection 13, outside lower contact 14
Perimeter surface is provided with the groove for fixed seal ring.The outer wall of lower contact 14 is close with the inwall extruding of top connection 13
Seal forming sealing in this place.Lower contact 14 is used to be connected with perforating gun.Lower contact 14 includes extending to
Can dissolve the elastic card claw 141 between metal sleeve 15 and top connection 13.Metal sleeve 15 is can dissolve to be arranged on
Between top connection 13 and mandrel 11.The pressure of all elastic claw 141 can dissolve the top of metal sleeve 15.
The position convex portion 141a corresponding with dissolvable metal sleeve 15, top connection 13 are provided with elastic card claw 141
Inwall on be provided with the groove being engaged with convex portion 141a.Original state, can dissolve metal sleeve 15
Under supporting role, convex portion 141a snaps in groove, so that elastic card claw 141 limits the axial location of lower contact 14,
Lower contact 14 can not be moved in axial direction.During release perforating gun, can dissolve after metal sleeve 15 dissolves to lose
Go the supporting role to elastic card claw 141, so as under the Action of Gravity Field of perforating gun, elastic card claw 141 it is convex
Portion 141a is final to be deviate from from groove, and lower contact 14 is in axial direction moved and eventually disengaged from and top connection 13
Cooperation, complete abandon perforating gun work.
As shown in Figure 1, Figure 3, lower contact 14 includes the mounting end 142 relative with elastic card claw 141.Peace
Dress end 142 is provided with external screw thread, and perforating gun is connected to one with the mode that mounting end 142 is connected through a screw thread
Rise.Lower contact 14 includes the first shoulder hole near mounting end 142, with diameter greater than the first shoulder hole the
Two shoulder holes and near elastic card claw 141 and with diameter greater than the 3rd shoulder hole of the second shoulder hole.First ladder
The hole wall in hole is provided with internal thread, and the end of mandrel 11 is provided with the external screw thread being engaged with the internal thread, from
And the mode that mandrel 11 is connected through a screw thread with lower contact 14 is realized being connected.
Gap 99 is formed between the hole wall of the outer peripheral face of mandrel 11 and the second shoulder hole.Set in lower contact 14
There is the liquid-through hole 143 being connected with the gap 99.The opening of liquid-through hole 143 is arranged on the end of mounting end 142
On face, outlet is arranged on the hole wall of the second shoulder hole with so that liquid-through hole 143 is connected with above-mentioned gap 99.
Liquid-through hole 143 will can be directed into outside release nipple 10 for dissolving the liquid of dissolvable metal sleeve 15
Enter the inside of release nipple 10.Liquid-through hole 143 has connected inner space and the mandrel 11 and second of perforating gun
Gap 99 between the hole wall of shoulder hole so that liquid can be flowed into from the inside of perforating gun by liquid-through hole 143
To in the gap 99.Multiple liquid-through holes 143 are provided with lower contact 14.Multiple liquid-through holes 143 connect under
First 14 axis is circumferentially uniformly distributed, the amount of liquid that increase is entered into gap 99, accelerates dissolving and can dissolve gold
Belong to the speed of sleeve 15.
Can dissolve and spacing collar 16 is provided between metal sleeve 15 and lower contact 14.Spacing collar 16 is arranged
On mandrel 11, one end is resisted against on dissolvable metal sleeve 15, the other end insert the 3rd shoulder hole in and seat
It is connected on the step surface between the second shoulder hole and the 3rd shoulder hole.Spacing collar 16 can be to can dissolve metal
Sleeve 15 forms spacing, prevents dissolvable metal sleeve 15 from departing from right along the axial direction movement of mandrel 11
The support of elastic card claw 141.
Another liquid collecting cavity is formed between spacing collar 16, top connection 13 and dissolvable metal sleeve 15.As schemed
Shown in 4, the guiding groove 161 in axial direction extending is provided with the outer surface of spacing collar 16.Guiding groove
161 are connected with gap 99 and liquid collecting cavity respectively.Guiding groove 161 can lead out into mandrel 11 and second
The liquid in gap 99 between the hole wall of shoulder hole flows through spacing collar 16.By guiding groove 161 and enter
The liquid entered to liquid collecting cavity contacts concurrent biochemical reaction with dissolvable metal sleeve 15 to dissolve dissolvable metal
Sleeve 15.
Restraining position ring block 17 is arranged on mandrel 11.Can dissolve metal sleeve 15 and be arranged on spacing ring 17 and stop collar
Between cylinder 16.Spacing ring 17 is prevented from can dissolve metal sleeve 15 along the axial direction movement of mandrel 11
Depart from the support to elastic card claw 141, improve the positional stability that can dissolve metal sleeve 15.Spacing ring 17
Can be fixed by a pin on mandrel 11.
As shown in figure 1, being provided with annular flange 111 on the outer surface of mandrel 11.The top of annular flange 111
It is provided with the annular mounting groove of circumferentially extending.Sealing ring is installed in annular mounting groove, annular flange 111 with it is upper
The common crush seal circle of inwall of joint 13 forming sealing in this place.The one end of mandrel 11 and the spiral shell of lower contact 14
Line is connected.Sealing is formed between annular flange 111 and the inwall of top connection 13, so that mandrel 11 is with
Liquid collecting cavity is formed between joint 14 and lower contact 14, to cause liquid-immersed dissolvable metal sleeve 15.
The course of work of the perforating gun release nipple 10 of the embodiment of the present invention is：
The release nipple 10 that perforating gun will be carried is transferred in pit shaft and fixed good position.In perforating gun perforation
Fluid isolation in preceding perforating gun inner space and pit shaft.After perforating gun perforation, the liquid in pit shaft can enter
The inner space of perforating gun.The liquid-through hole 143 that the liquid entered into perforating gun passes through setting in lower contact 14
In gap 99 between the hole wall of the inflow shoulder hole of mandrel 11 and second, and then flow through drawing for spacing collar 16
Guide groove 161 and the concurrent biochemical reaction that is in contact with dissolvable metal sleeve 15.Can dissolve metal sleeve 15 with
Liquid can dissolve after reacting.Through after a while, the dissolvable metal sleeve 15 after dissolving loses
Supporting role to elastic card claw 141.Under the Action of Gravity Field of perforating gun, lower contact 14 and mandrel 11, under
Elastic card claw 141 on joint 14 shrinks and causes the convex portion 141a of elastic card claw 141 from top connection 13
Groove in deviate from, then the component such as perforating gun, lower contact 14 and mandrel 11 falls into wellbore bottom, so that real
Existing release nipple 10 abandons the purpose of perforating gun.
The dissolvable metal sleeve 15 of the embodiment of the present invention is magnadure sleeve.The magnadure sleeve plus
Work manufacturing process is：First by magnalium powder by mixing, the composite metal powder that then will be mixed is put into mould
In tool, then mould is put into compressing on press device.The magnadure sleeve of shaping is put into sintering furnace,
It is sintered in specific temperature and atmosphere (or vacuum).The magnadure sleeve that will finally sinter is put into
It is heat-treated in paraffin oil.
In addition, work bearing capacity and work rate of dissolution in order to further ensure magnadure sleeve, adopt
W metal (nickel), Cu (copper), Zn (zinc) are coated on the surface of magnadure sleeve with hydrogen reduction technology
Deng to form clad, so as to reach the rate of dissolution of effectively control magnadure sleeve, while also improving magnalium
The rigidity of alloy sleeve, lifts bearing capacity.
Containing Cl- (chlorion) in liquid in pit shaft or stratum, and metal Mg (magnesium) and Al (aluminium)
Electrochemical reaction can occur in the solution of chloride ion-containing.By taking the KCl aqueous solution as an example, in magnadure sleeve
Chlorion in metal ingredient and the KCl aqueous solution gradually dissolves after chemically reacting.Magnadure sleeve is not
Weight change in synthermal, different KCl solution with the time is also different.Temperature is higher, in the KCl aqueous solution
Chloride ion content is higher, and dissolution velocity is faster.
As shown in figure 5, rate of dissolution of the magnadure sleeve in different temperatures, various concentrations KCl solution,
The degradation speed of preceding 6h or 8h (more than the magnadure sleeve pressure-bearing time 2h of design) is relatively slow, and magnalium is closed
The weight change of golden sleeve is small, and external diameter is almost unchanged, and bearing capacity is unaffected, upon dissolution between more than 6h
Or after 8h, magnadure sleeve is at the uniform velocity dissolved with certain speed, and external diameter is obviously reduced, and bearing capacity dies down.
The perforating gun release nipple 10 of the embodiment of the present invention, including for supporting the dissolvable gold of elastic card claw 141
Category sleeve 15.There is chemical reaction and dissolve in the liquid in it can dissolve metal sleeve 15 and pit shaft or stratum
Afterwards, the convex portion 141a of elastic card claw 141 can deviate from from the groove of top connection 13, be finally completed discarding perforation
The work of rifle.Compared in the prior art by highly pressurised liquid promote stop collar movement come realize abandon perforating gun
Mode, the perforating gun release nipple 10 of the embodiment of the present invention carries out Mechanical Moving without hydraulic action so that
The success rate that perforating gun loses rifle is greatly improved, the danger and cost of operation is reduced, well construction period is shortened.
Ground is readily appreciated that, the material of the dissolvable metal sleeve 15 of the embodiment of the present invention is not limited to this implementation
The magnadure of example.
Although by reference to preferred embodiment, invention has been described, is not departing from the scope of the present invention
In the case of, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment can have been combined in any way
Come.The invention is not limited in specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. a kind of perforating gun release nipple, including：
Mandrel；
Top connection, is set in the outside of the mandrel, sets fluted on inwall；
Metal sleeve is can dissolve, the mandrel periphery is set in, is arranged between the mandrel and top connection；
Lower contact, is engaged with the top connection, including elastic card claw, and the free end of the elastic card claw extends
To between the top connection and dissolvable metal sleeve, being provided with the free end and the fit depressions
Convex portion, the convex portion is corresponding with the position of the dissolvable metal sleeve；
Be provided with liquid-through hole in the lower contact, the liquid-through hole can by outside the release nipple for molten
The liquid for solving the dissolvable metal sleeve leads into the inside of the release nipple.
2. perforating gun release nipple according to claim 1, it is characterised in that the lower contact includes
First shoulder hole and the second shoulder hole with diameter greater than first shoulder hole, the mandrel and first rank
Terraced hole threaded connection, is formed between the mandrel and the hole wall of second shoulder hole and is connected with the liquid-through hole
Logical gap.
3. perforating gun release nipple according to claim 2, it is characterised in that be arranged on the mandrel
Limited location sleeve, the spacing collar is arranged between the dissolvable metal sleeve and lower contact.
4. perforating gun release nipple according to claim 3, it is characterised in that the spacing collar
It is provided with outer surface along the axially extending guiding groove of the spacing collar, the guiding groove and the gap
It is connected.
5. perforating gun release nipple according to claim 3, it is characterised in that be arranged on the mandrel
Restraining position ring block, the dissolvable metal sleeve is arranged between the spacing ring and the spacing collar.
6. perforating gun release nipple according to claim 3, it is characterised in that the lower contact is also wrapped
The 3rd shoulder hole with diameter greater than second shoulder hole is included, the 3rd rank is inserted in the end of the spacing collar
Terraced hole and seated connection are on the step surface between second shoulder hole and the 3rd shoulder hole.
7. perforating gun release nipple according to claim 2, it is characterised in that the liquid-through hole is opened
Mouth is arranged on the end face of the lower contact.
8. the perforating gun release nipple according to any claim in claim 1 to 7, its feature exists
In the dissolvable metal sleeve is magnadure sleeve.
9. perforating gun release nipple according to claim 8, it is characterised in that the magnadure set
Clad is provided with the outer surface of cylinder.
10. perforating gun release nipple according to claim 9, it is characterised in that the material of the clad
Material includes nickel, copper or zinc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963570.5A CN106894795A (en) | 2015-12-21 | 2015-12-21 | A kind of perforating gun release nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963570.5A CN106894795A (en) | 2015-12-21 | 2015-12-21 | A kind of perforating gun release nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106894795A true CN106894795A (en) | 2017-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510963570.5A Pending CN106894795A (en) | 2015-12-21 | 2015-12-21 | A kind of perforating gun release nipple |
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| CN (1) | CN106894795A (en) |
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| CN2460725Y (en) * | 2000-11-03 | 2001-11-21 | 四川石油管理局测井公司 | Ignition automatic device of perforator for oil-gas well |
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| CN203685145U (en) * | 2013-09-24 | 2014-07-02 | 中国石油化工股份有限公司 | Gun throwing device for perforating gun |
| US20140345877A1 (en) * | 2011-08-17 | 2014-11-27 | Baker Hughes Incorporated | Selectively degradable passage restriction |
| CN204552710U (en) * | 2015-04-22 | 2015-08-12 | 川南航天能源科技有限公司 | Blast unlocks auto-gun device |
| CN106437580A (en) * | 2015-08-12 | 2017-02-22 | 中国石油化工股份有限公司 | Perforating gun release device |
-
2015
- 2015-12-21 CN CN201510963570.5A patent/CN106894795A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Application publication date: 20170627 |