CN207728343U - A kind of cement retainer - Google Patents
A kind of cement retainer Download PDFInfo
- Publication number
- CN207728343U CN207728343U CN201820006164.9U CN201820006164U CN207728343U CN 207728343 U CN207728343 U CN 207728343U CN 201820006164 U CN201820006164 U CN 201820006164U CN 207728343 U CN207728343 U CN 207728343U
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- CN
- China
- Prior art keywords
- liquid pass
- pass hole
- lower contact
- central tube
- cement retainer
- Prior art date
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- 239000004568 cement Substances 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 84
- 230000000712 assembly Effects 0.000 claims abstract description 53
- 238000000429 assembly Methods 0.000 claims abstract description 53
- 238000012856 packing Methods 0.000 claims abstract description 34
- 241000239290 Araneae Species 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 25
- 238000003780 insertion Methods 0.000 abstract description 23
- 230000037431 insertion Effects 0.000 abstract description 23
- 230000013011 mating Effects 0.000 abstract description 3
- 239000011083 cement mortar Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 241000219112 Cucumis Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 201000011180 Dental Pulp Calcification Diseases 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model is related to downhole tool technical fields, and in particular to a kind of cement retainer.Cement retainer provided by the utility model, including the first slip assemblies, central tube, lower contact, the first centrum sleeve, packing element and inner sliding sleeve, it can be matched with conventional setting tool, cement retainer is connected by adapter with setting tool and transfers to designated position, is then set by setting tool；Completion is set at the predetermined setting depth that rear cement retainer is fixed in pit shaft, the mating insertion tube of tripping in, inner sliding sleeve connection third liquid pass hole and the first liquid pass hole, the second liquid pass hole are pushed, cement is then injected to pit shaft by above three liquid pass hole, completes the closure operation to high pressure water layer；After completing to block operation, insertion tube is extracted, insertion tube drives inner sliding sleeve movement, inner sliding sleeve movement the first liquid pass hole of cut-out to be connected to third liquid pass hole, can be effectively prevented from and the problem of liquid refluence occur during exiting.
Description
Technical field
The utility model is related to downhole tool technical fields, and in particular to a kind of cement retainer.
Background technology
Since oil-well cement returns the above casing corrosion perforation of height, well cementing of cement section leaks, makes Middle-late Development Stages of Oil Fields In Other Countries
Oil reservoir flows into pit shaft adjacent to the water flooding of high pressure water layer or oil reservoir energy declines neighbouring high pressure water layer and oil reservoir mutually alters and causes oil well
Aqueous or reservoir water flooding brings exceptional hardship to oil field development.Some old well of production for many years at present, long-term High water cut, place
In closing well state, analyze and determine：First, by exploiting for a long time, potential oil zone casing corrosion perforation, casing leakage causes oil-reservoir water
It floods；Second is that the long-term high pressure water injection of possible high-pressure water injection well, forms head cone with the well oil reservoir and in turn results in reservoir water flooding.Third, can
Can have high pressure water layer mutually to be altered with oil reservoir near oil reservoir leads to reservoir water flooding.These wells are looked for by packer and are omitted in printing in addition to casing
The possibility of corrosion failure leakage.Using radioisotope logging, finds there is one mutually to be altered with oil reservoir adjacent to high pressure water layer in oil reservoir lower part, make
The well all produces water.
In this case, conventional processing method is first to penetrate out engineering hole in high pressure water layer, then carry out to high pressure water layer
Chemical plugging --- mainly cement mortar blocks.Cement plug brill is opened again after having blocked, then restores the exploitation of oil reservoir.But it should
The production oil reservoir of well is on high pressure water layer and adjacent close, is not only carried in engineering construction using conventional method for blocking
Prodigious risk, and it is difficult to ensure that oil reservoir is not blocked by cement mortar, especially high pressure water layer is squeezed stifled, it is possible to occur high
The outer guttation mud of water layer is pressed, makes to squeeze stifled failure.So only separated oil reservoir and high pressure water layer adjacent with it using tripping in tool,
High pressure water layer is blocked again.
Cement retainer has been used many years, and traditional cement retainer uses metal material, by drilling rod or
Oil pipe G.I.H, although conventional cement retainer good airproof performance, resistance to pressure difference is high, and Sealing period is long, can also milling,
It is easy to cause liquid refluence at work, and then damages equipment；Meanwhile metal material, after boring mill, bulk residues object is possible to
Pit shaft is blocked, unnecessary loss is caused.
Utility model content
(1) technical problem to be solved in the utility model is：Existing cement retainer is easy to cause liquid at work
It flows backwards, and then damages equipment；After cement retainer bores mill simultaneously, bulk residues object is possible to block pit shaft, causes unnecessary
Loss.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of cement retainer, including the first slip assemblies, in
Heart pipe, lower contact, the first cone sleeve, packing element and inner sliding sleeve, the central tube and the lower contact are tubular structure, described
The first hollow cavity of both ends open is formed inside central tube, and the second hollow cavity of one end open is formed in the lower contact,
One end of the central tube is inserted into the second hollow cavity of the lower contact, and third hollow cavity is formed in the inner sliding sleeve,
The inner sliding sleeve is located in first hollow cavity, and the central tube is equipped with the first liquid pass hole, and the lower contact is equipped with
The second liquid pass hole being connected to first liquid pass hole, the inner sliding sleeve are equipped with the third being connected to the third hollow cavity
Liquid pass hole, the inner sliding sleeve are slided in first hollow cavity to be connected to the first liquid pass hole and third liquid pass hole, or cut-out
The connection of first liquid pass hole and third liquid pass hole；
The outer wall of the central tube other end is equipped with limiting section, is connect under along the limiting section on the outside of the central tube
The direction of head is arranged with the first slip assemblies, the first cone sleeve and packing element successively；
First slip assemblies connect with the limiting section, and the packing element connects with the lower contact, first card
Watt wedge shaped shape of component, the first cone sleeve are equipped with the first inclined-plane coordinated with first slip assemblies, and described first
Inclined-plane tilts from inside to outside along the limiting section to the direction of the packing element.
The beneficial effects of the utility model：The utility model provides a kind of cement retainer, including the first slip assemblies, in
Heart pipe, lower contact, the first cone sleeve, packing element and inner sliding sleeve can be matched with conventional setting tool, by cement retainer
It is connected with setting tool by adapter, cement retainer transfers to designated position by tools such as cable, oil pipe, steel wires, so
It is set afterwards by setting tool；Completion is set at the predetermined setting depth that rear cement retainer is fixed in pit shaft, tripping in
Mating insertion tube, insertion tube enter in the first hollow cavity in central tube, are inserted into inner sliding sleeve, and inner sliding sleeve is pushed to move
It is dynamic, so that the third liquid pass hole on inner sliding sleeve is connected to the first liquid pass hole, the second liquid pass hole and is formed access, thus by insertion tube to
Cement is injected in third hollow cavity, cement flows out to cement by third liquid pass hole, the first liquid pass hole and the second liquid pass hole and holds
It stays the outside of device to enter in pit shaft, and then a cement mortar plugged zone is formed positioned at the downside of cement retainer in pit shaft, it is complete
The closure operation of pairs of high pressure water layer；After completing to block operation, insertion tube is extracted, insertion tube is sliding in drive during exiting
Set movement, inner sliding sleeve movement first liquid pass hole of cut-out are connected to third liquid pass hole, and this makes it possible to effectively prevent pit shaft
Interior liquid or cement is returned by the second liquid pass hole, the first liquid pass hole and third liquid pass hole in this cement retainer, and inside is
Blind plugging is formed, comprehensive closure has been carried out to pit shaft, the cement of cement retainer lower part will be blocked under cement retainer,
It can be effectively prevented from and the problem of liquid refluence occur, protect the normal operation of equipment.
Further, the cement retainer further includes throw-out collar, and the throw-out collar is socketed in the outside wall surface of the central tube,
First slip assemblies are connected by the throw-out collar with the limiting section.
Further, the cement retainer further includes the second slip assemblies and the second cone sleeve, second slips
Component and the second cone sleeve are socketed in the direction of the lower contact in the outside wall surface of the central tube successively by the packing element,
The packing element is connected by second slip assemblies and the second cone sleeve with the lower contact, and second slip assemblies are in
Wedge shape, the second cone sleeve are equipped with the second inclined-plane coordinated with second slip assemblies, second inclined-plane edge
The direction ecto-entad of the packing element to the lower contact tilts.
Further, first slip assemblies and the second slip assemblies include slip spider and slips tooth, the slips
Cover for seat is connected on the outside of the central tube, and the slips tooth is fixed at the outer surface of the slip spider.
Further, the inner sliding sleeve includes connected linkage section and locking section, and the internal diameter of the locking section is more than described
The internal diameter of linkage section
The linkage section is arranged close to the lower contact and cylindrical, the third liquid pass hole on the linkage section,
The third hollow cavity of both ends open is formed in the cylindric linkage section；
The locking section includes the locking jaw of multiple strips made of elastic material, one end of multiple locking jaws
It is connected respectively with one end of the linkage section and constitutes the columned locking section, and is formed between the two neighboring locking jaw
Gap, the other end of each locking jaw are equipped with the protruding portion protruded outward, a ring on the inner wall of the central tube
The mounting groove of shape, in the mounting groove, the mounting groove is equipped with close to one end of the lower contact and is oriented to the protruding parts
Inclined-plane, the guiding surface are tilted along the direction ecto-entad of central tube to lower contact.
Further, quarter butt is equipped in second hollow cavity, the end of the central tube is resisted against on the short tube,
When the one end of the linkage section far from locking section is resisted against on the quarter butt, first liquid pass hole is connected to third liquid pass hole.
Further, the slips tooth is made of cast iron materials, and the packing element is made of rubber material, the central tube and
The inner sliding sleeve is made of aluminium, and the first cone sleeve, the second cone sleeve, throw-out collar and the lower contact are by soluble metal
Material is made.
Description of the drawings
The advantages of the utility model is above-mentioned and/or additional aspect is from combining in description of the following accompanying drawings to embodiment and will become
Obviously and it is readily appreciated that, wherein：
Fig. 1 is structural representation of the cement retainer in the case where inner sliding sleeve is closed described in the utility model embodiment
Figure；
Fig. 2 is structural representation of the cement retainer in the case where inner sliding sleeve is in the open state described in the utility model embodiment
Figure.
Correspondence in wherein Fig. 1 and Fig. 2 between reference numeral and component names is：
1, cement retainer, 11, central tube, the 111, first hollow cavity, the 112, first liquid pass hole, 113, limiting section,
114, mounting groove, the 12, first slip assemblies, the 13, second slip assemblies 14, the first cone sleeve, the 15, second cone sleeve, 16,
Throw-out collar, 17, packing element, 18, inner sliding sleeve, 181, linkage section, 182, third hollow cavity, 183, locking jaw, 184, third liquid pass hole,
19, lower contact, the 191, second hollow cavity, the 192, second liquid pass hole, 193, quarter butt.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
As depicted in figs. 1 and 2, the utility model provides a kind of cement retainer 1, including the first slip assemblies 12, center
Pipe 11, lower contact 19, the second cone sleeve 15, packing element 17 and inner sliding sleeve 18, the central tube 11 and the lower contact 19 are
Tubular structure, 11 inside of the central tube form the first hollow cavity 111 of both ends open, one end are formed in the lower contact 19
Second hollow cavity 191 of opening, one end of the central tube 11 are inserted into the second hollow cavity 191 of the lower contact 19,
Third hollow cavity 182 is formed in the inner sliding sleeve 18, the inner sliding sleeve 18 is located in first hollow cavity 111, described
Central tube 11 is equipped with the first liquid pass hole 112, and the lower contact 19 is equipped with the second mistake being connected to first liquid pass hole 112
Fluid apertures 192, the inner sliding sleeve 18 are equipped with the third liquid pass hole 184 being connected to the third hollow cavity 182, the inner sliding sleeve
18 slide in first hollow cavity 111 to be connected to the first liquid pass hole 112 and third liquid pass hole 184, or the first mistake of cut-out
The connection of fluid apertures 112 and third liquid pass hole 184；The outer wall of 11 other end of the central tube is equipped with limiting section 113, described
11 outside of central tube is arranged with the first slip assemblies 12, the second cone successively along the limiting section 113 to the direction of lower contact 19
Sleeve 15 and packing element 17；First slip assemblies 12 connect with the limiting section 113, the packing element 17 and the lower contact 19
Connect, first slip assemblies, 12 wedge shaped shape, the first cone sleeve is equipped with to be coordinated with first slip assemblies 12
The first inclined-plane, first inclined-plane tilts from inside to outside along the limiting section 113 to the direction of the packing element 17.
Cement retainer 1 provided by the utility model can be matched with conventional setting tool, and cement retainer 1 is led to
It crosses adapter with setting tool to be connected, cement retainer 1 transfers to designated position by tools such as cable, oil pipe, steel wires, then
It is set by setting tool；Completion is set at the predetermined setting depth that rear cement retainer 1 is fixed in pit shaft, and tripping in is matched
The insertion tube of set, insertion tube enter in the first hollow cavity 111 in central tube 11, are inserted into inner sliding sleeve 18, in promotion
Sliding sleeve 18 moves, and the third liquid pass hole 184 on inner sliding sleeve 18 is made to be connected to formation with the first liquid pass hole 112, the second liquid pass hole 192
Access, to inject cement into third hollow cavity 182 by insertion tube, cement crosses liquid by third liquid pass hole 184, first
The outside that hole 112 and the second liquid pass hole 192 flow out to cement retainer 1 enters in pit shaft, and then is held positioned at cement in pit shaft
It stays the downside of device 1 to form a cement mortar plugged zone, completes the closure operation to high pressure water layer；After completing to block operation, pull out
Go out insertion tube, insertion tube drives inner sliding sleeve 18 to move during exiting, movement the first liquid pass hole 112 of cut-out of the inner sliding sleeve 18
With being connected to for third liquid pass hole 184, this makes it possible to the liquid effectively prevented in pit shaft or cement by the second liquid pass hole 192,
First liquid pass hole 112 and third liquid pass hole 184 return in this cement retainer 1, and inside forms blind plugging, has been carried out entirely to pit shaft
Face blocks, and the cement of 1 lower part of cement retainer will be blocked under cement retainer 1, can be effectively prevented from and liquid occur
The problem of body is flow backwards, protects the normal operation of equipment.
Cement retainer 1 provided by the present application can be greatly saved operating cost, while cement retainer 1 is set
Process is simple, flow chart is few, can save the activity duration, operating efficiency is improved, after cement retainer 1 is set, with set
Inside pipe wall anchoring is firm, bears the pressure from 1 lower part of cement retainer during the packing of oil gas well shaft.
As depicted in figs. 1 and 2, the cement retainer 1 further includes throw-out collar 16, and the throw-out collar 16 is socketed in the central tube
In 11 outside wall surface, first slip assemblies 12 are connected by the throw-out collar 16 with the limiting section 113, wherein the limit
The outer diameter that the outer diameter in portion 113 is more than the central tube 11 makes this makes it possible to by throw-out collar 16 described in 113 card column of limiting section
Used time, cement retainer 1 coordinate.The cement retainer 1 cooperation, which is set after adapter is connect with setting tool together, enters well, arrives
Up to after design setting depth, so that it is generated certain thrust by triggering setting tool, push throw-out collar 16 to move down, packing element
17 will be squeezed and generate elastic deformation and contact to form initial sealing with internal surface of sleeve pipe.When thrust is more than upper and lower slip spider
Bursting force after, slip spider will rupture, and be moved along the conical surface of upper lower cone, until slips tooth and internal surface of sleeve pipe are close
Anchoring；When setting tool provide thrust continue to increase, until more than the connecting pin limit for setting adapter and central tube 11
Stress, pin are pulled off destruction, set, action completion of giving up, and cement retainer 1 stays in design setting depth, and recycling sets work
Tool, cement retainer 1 stay in design setting depth, and 1 outside of the cement retainer is packing element 17, and compression packing element 17 is right after setting
Pit shaft has carried out comprehensive closure.
As depicted in figs. 1 and 2, the cement retainer 1 further includes the second slip assemblies 13 and the second cone sleeve, described
Second slip assemblies 13 and the second cone sleeve by the packing element 17 to the direction of the lower contact 19 be socketed in successively it is described in
In the outside wall surface of heart pipe 11, the packing element 17 passes through second slip assemblies, 13 and second cone sleeve and the lower contact 19
Connect, second slip assemblies, 13 wedge shaped shape, the second cone sleeve is equipped with matches with second slip assemblies 13
The second inclined-plane closed, second inclined-plane are tilted along the direction ecto-entad of the packing element 17 to the lower contact 19, this implementation
Set in example there are two slip assemblies, two slip assemblies are arranged in the both sides of the packing element 17, while two slips respectively with it is right
Answer cone sleeve cooperation, design dual-grip in this way can bidirectional bearing, cement retainer 1 anchor more stablize.
When being carried out using the cement retainer 1, cement retainer 1 is connected by adapter with setting tool, by
Different in the setting tool of field operation selection, cement retainer 1 can be by under the tools such as oil pipe, drilling rod, coiled tubing, cable
Enter within oil gas casing, and is set within oil gas casing using setting tools such as hydraulic pressure and cables, cement retainer 1
After the completion of being connect with setting tool by adapter, holds and stayed in 1 tripping in mode tripping in pit shaft of device according to traditional cements, set work
The push rod of tool passes through the first hollow cavity 111 of central tube 11 to be connect with pin, and the position of the lower contact 19 is made to fix；Then
So that setting tool is pushed and squeeze the central tube 11, central tube 11 pushes first slip assemblies 12 to the first cone sleeve
Side is mobile, the second slip assemblies 13 are moved to the second cone sleeve side, and the first slip assemblies 12 are along the first cone sleeve
The first inclined-plane move outward, the second slip assemblies 13 move inclined-plane outward along the second inclined-plane of the second cone sleeve,
The outside wall surface of first slip assemblies, 12 and second slip assemblies 13 is set to squeeze the inner wall of pit shaft, 12 He of the first slip assemblies
Second slip assemblies 13 support on the inner wall of the pit shaft, then proceed to extruding center pipe 11, and central tube 11 pushes the first slips
Component 12 and the second slip assemblies 13 move together and squeeze the packing element 17, and the packing element 17 is in 12 He of the first slip assemblies
Compressive deformation expands between second slip assemblies 13, and squeezes the inner wall of the pit shaft, completes to set.
As depicted in figs. 1 and 2, the inner sliding sleeve 18 includes connected linkage section 181 and locking section, the locking section it is interior
Diameter is more than linkage section 181 described in the internal diameter of the linkage section 181, and, close to the lower contact 19 and cylindrical, the third crosses liquid
Hole 184 is arranged on the linkage section 181, and the third that both ends open is formed in the cylindric linkage section 181 is hollow
Cavity 182；The locking section includes the locking melon 183 of multiple strips made of elastic material, multiple locking jaws 183
One end be connected with one end of the linkage section 181 constitute the columned locking section respectively, and the two neighboring locking
Gap is formed between pawl 183, the other end of each locking jaw 183 is equipped with the protruding portion protruded outward, the center
The mounting groove 114 of a loop on the inner wall of pipe 11, in the mounting groove 114, the mounting groove 114 leans on the protruding parts
One end of the nearly lower contact 19 is equipped with guiding surface, and the guiding surface is along central tube 11 to the direction of lower contact 19 by extroversion
It is tilted；Quarter butt 193 is equipped in second hollow cavity 191, the end of the central tube 11 is resisted against on the short tube, institute
When stating the one end of linkage section 181 far from locking section and being resisted against on the quarter butt 193, first liquid pass hole 112 and third cross liquid
Hole 184 is connected to.
After the completion of cement retainer 1 is set, the mating insertion tube of tripping in, insertion tube enters in first in central tube 11
It in cavity body 111, is inserted into inner sliding sleeve 18, the protruding portion on locking jaw 183 is stuck in the mounting groove 114 at this time
, since locking section is the cylindrical-shaped structure for having multiple locking melons 183 to surround, while each locking jaw 183 is by elastic material
It is manufactured, therefore when pushing insertion tube, the protruding portion on locking jaw 183 can skid off mounting groove 114 along guiding surface, this
Sample can push the inner sliding sleeve 18 to be moved to the direction of lower contact 19, and after locking jaw 183 is skidded off out of mounting groove 114,
The space surrounded inside multiple locking jaws 183 becomes smaller, and such locking jaw 183 can lock insertion tube, wherein in the protruding portion
First liquid pass hole 112 and third liquid pass hole 184 are disconnected described in when in mounting groove 114；Push the inner sliding sleeve 18
It is moved to the direction of the lower contact 19, until when the interconnecting piece of inner sliding sleeve 18 is resisted against on the quarter butt 193, third mistake at this time
192 formation access communicating together of fluid apertures 184, the first liquid pass hole 112 and the second liquid pass hole, to hollow to third by insertion tube
Cement is injected in cavity 182, cement flows out to water by third liquid pass hole 184, the first liquid pass hole 112 and the second liquid pass hole 192
Mud, which is held, stays the outside of device 1 to enter in pit shaft, and then forms a cement mortar positioned at the downside of cement retainer 1 in pit shaft and block
Layer completes the closure operation to high pressure water layer；Complete block operation after, extract insertion tube, be inserted into exit during band
Dynamic since locking jaw 183 locks the insertion tube, inner sliding sleeve 18 is moved together with the insertion tube, until the interior cunning
Protruding portion on set 18 is caught in the mounting groove 114, and locking jaw 183 unclamps the insertion tube at this time, and inner sliding sleeve 18 is fixed
In the first hollow cavity 111, insertion tube continues to extract recycling, the first liquid pass hole 112 of cut-out of the movement of the inner sliding sleeve 18 at this time
With being connected to for third liquid pass hole 184, this makes it possible to the liquid effectively prevented in pit shaft or cement by the second liquid pass hole 192,
First liquid pass hole 112 and third liquid pass hole 184 return in this cement retainer 1, and inside forms blind plugging, is carried out to pit shaft
It blocks comprehensively, the cement of 1 lower part of cement retainer will be blocked under cement retainer 1, and appearance can be effectively prevented from
The problem of liquid is flow backwards, protects the normal operation of equipment.
Preferably, the slips tooth is made of cast iron materials, and the packing element 17 is made of rubber material, the central tube 11
It is made of aluminium with the inner sliding sleeve 18, the second cone sleeve 15, the second cone sleeve, throw-out collar 16 and the lower contact 19
It is made of soluble metal material.The second cone sleeve 15, the second cone sleeve, throw-out collar 16 and the lower contact 19 are by can
Molten metal material is made, after operation, the second cone sleeve 15, the second cone sleeve, throw-out collar 16 and the lower contact
19 voluntarily can dissolve or degrade in down-hole liquid environment, and its dissolving or degradation time can by soluble metal material and
The dissolving of solvable rubber material or degradation speed are pre-adjusted, and are reached cement retainer 1 and are dissolved or drop in setting time
The purpose of solution, mill part aluminum component can be all dissolved or need to only be bored, time consuming is bored and greatly shortens, fundamentally overcome existing cast iron
The deficiency of cement retainer 1.
As depicted in figs. 1 and 2, first slip assemblies, 12 and second slip assemblies 13 include slip spider and slips
Tooth, the slips tooth are arranged on the slip spider, more conducively be engageds with internal surface of sleeve pipe, slips denticle accumulate it is very small, using returning
Row, while the slip spider and slips tooth are monolithic construction, the mechanism of entire slips are optimized, wherein the first slips group
Part 12 and the second slip assemblies 13 are inserted structure, above 3 teeth, below 4 teeth；Use cermet for slips tooth, (card
Watt seat is still soluble material) hardness is high, and it is small, it is reasonably distributed, it is more efficient to set.
In the description of the present invention, it should be noted that term "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
State the utility model and simplify and describe, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second "
It is used for description purposes only, is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work, all
Belong to the range of the utility model protection.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of cement retainer, it is characterised in that：Including the first slip assemblies, central tube, lower contact, the first cone sleeve,
Packing element and inner sliding sleeve, the central tube and the lower contact are tubular structure, and both ends open is formed inside the central tube
First hollow cavity, forms the second hollow cavity of one end open in the lower contact, described in one end of the central tube is inserted into
In second hollow cavity of lower contact, third hollow cavity is formed in the inner sliding sleeve, the inner sliding sleeve is located in described first
In cavity body, the central tube is equipped with the first liquid pass hole, and the lower contact is equipped with the be connected to first liquid pass hole
Two liquid pass holes, the inner sliding sleeve are equipped with the third liquid pass hole being connected to the third hollow cavity, and the inner sliding sleeve is described
Sliding is to be connected to the first liquid pass hole and third liquid pass hole, or the first liquid pass hole of cut-out and third liquid pass hole in first hollow cavity
Connection；
The outer wall of the central tube other end is equipped with limiting section, along the limiting section to lower contact on the outside of the central tube
Direction is arranged with the first slip assemblies, the first cone sleeve and packing element successively；
First slip assemblies connect with the limiting section, and the packing element connects with the lower contact, the first slips group
The wedge shaped shape of part, the first cone sleeve are equipped with the first inclined-plane coordinated with first slip assemblies, first inclined-plane
It is tilted from inside to outside along the limiting section to the direction of the packing element.
2. cement retainer according to claim 1, it is characterised in that：The cement retainer further includes throw-out collar, described
Throw-out collar is socketed in the outside wall surface of the central tube, and first slip assemblies are connected by the throw-out collar with the limiting section.
3. cement retainer according to claim 2, it is characterised in that：The cement retainer further includes the second slips group
Part and the second cone sleeve, second slip assemblies and the second cone sleeve by the packing element to the direction of the lower contact according to
It is secondary to be socketed in the outside wall surface of the central tube, the packing element by second slip assemblies and the second cone sleeve with it is described
Lower contact connects, the wedge shaped shape of the second slip assemblies, and the second cone sleeve is equipped with and second slip assemblies
Second inclined-plane of cooperation, second inclined-plane are tilted along the direction ecto-entad of the packing element to the lower contact.
4. cement retainer according to claim 3, it is characterised in that：First slip assemblies and the second slip assemblies
Include slip spider and slips tooth, the slip spider is socketed in the outside of the central tube, and the slips tooth is fixed at institute
State the outer surface of slip spider.
5. cement retainer according to any one of claims 1 to 4, it is characterised in that：The inner sliding sleeve includes connected
Linkage section and locking section, the internal diameter of the locking section are more than the internal diameter of the linkage section
The linkage section is arranged close to the lower contact and cylindrical, the third liquid pass hole on the linkage section, cylinder
The third hollow cavity of both ends open is formed in the linkage section of shape；
The locking section includes the locking jaw of multiple strips made of elastic material, one end difference of multiple locking jaws
It is connected with one end of the linkage section and constitutes the columned locking section, and forms seam between the two neighboring locking jaw
Gap, the other end of each locking jaw are equipped with the protruding portion protruded outward, a loop on the inner wall of the central tube
Mounting groove, the protruding parts in the mounting groove, the mounting groove be equipped with close to one end of the lower contact be oriented to it is oblique
Face, the guiding surface are tilted along the direction ecto-entad of central tube to lower contact.
6. cement retainer according to claim 5, it is characterised in that：Quarter butt, institute are equipped in second hollow cavity
The end for stating central tube is resisted against on the quarter butt, when the one end of the linkage section far from locking section is resisted against on the quarter butt,
First liquid pass hole is connected to third liquid pass hole.
7. cement retainer according to claim 4, it is characterised in that：The slips tooth is made of cast iron materials, described
Packing element is made of rubber material, and the central tube and the inner sliding sleeve are made of aluminium, the first cone sleeve, the second cone
Sleeve, throw-out collar and the lower contact are made of soluble metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820006164.9U CN207728343U (en) | 2018-01-03 | 2018-01-03 | A kind of cement retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820006164.9U CN207728343U (en) | 2018-01-03 | 2018-01-03 | A kind of cement retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728343U true CN207728343U (en) | 2018-08-14 |
Family
ID=63084886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820006164.9U Withdrawn - After Issue CN207728343U (en) | 2018-01-03 | 2018-01-03 | A kind of cement retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
-
2018
- 2018-01-03 CN CN201820006164.9U patent/CN207728343U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
| CN108035694B (en) * | 2018-01-03 | 2023-11-24 | 成都维泰油气能源技术有限公司 | Cement retainer |
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| GR01 | Patent grant | ||
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| CP02 | Change in the address of a patent holder |
Address after: 610000 No.704, floor 7, building 1, No.167, Jinlu Second Road, Wuhou New Town Management Committee, Wuhou District, Chengdu City, Sichuan Province Patentee after: VERTECHS OIL & GAS TECHNOLOGY Co.,Ltd. Address before: 610000 No. 1-1, No. 1, No. 1, No. four, Wuhou District people south road, Chengdu, Sichuan Province, No. 1-1 24 layer 1-3 Patentee before: VERTECHS OIL & GAS TECHNOLOGY Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180814 Effective date of abandoning: 20231124 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180814 Effective date of abandoning: 20231124 |