CN207795133U - A kind of union connection Simple casing head - Google Patents
A kind of union connection Simple casing head Download PDFInfo
- Publication number
- CN207795133U CN207795133U CN201820165245.3U CN201820165245U CN207795133U CN 207795133 U CN207795133 U CN 207795133U CN 201820165245 U CN201820165245 U CN 201820165245U CN 207795133 U CN207795133 U CN 207795133U
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- China
- Prior art keywords
- slips
- casing head
- union
- head ontology
- support base
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- 238000007789 sealing Methods 0.000 claims abstract description 45
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Branch Pipes, Bends, And The Like (AREA)
Abstract
The utility model discloses a kind of unions to connect Simple casing head, including casing head ontology, slips support base, slips, sealing element, the tight cap of union, gate valve and silk plug, described sleeve pipe head ontology inside front is equipped with slips support base, slips is equipped on the inside of slips support base, sealing element is equipped with above the slips, the tight cap of union is arranged above sealing element and is spun on the top of casing head ontology by connection screw thread, silk plug is arranged at the bypass of casing head ontology side, and gate valve is fixed on by double male joint at the bypass of the casing head ontology other side.It is simple and compact for structure, make traditional standard flanged joint into quick union and connect, slips hanger structure is simplified, hanger sealing makes the tight cap of union into and compresses sealing element excitation sealing performance, and light and low cost is easy to install and use, has a safety feature.
Description
Technical field
The utility model is related to a kind of easy structure casing head devices that the shallow oil-gas Layer of mesolow uses.
Background technology
Connect preventer, lower even surface pipe column on casing head, and provides one and set hole for hanging next layer of casing string
And seal annular space.Mesolow well head is connected using standard flange currently on the market, and slips hanger majority uses more
The excitation sealing of bolt presses sealing element, is used for a long time rear bolt and easily loosens, cause seal loading uneven, influence leakproofness
Can, these conventional designs are complicated, and in-site installation spends the time long, and cost is high.
Utility model content
Purpose of utility model：Existing problem and shortage in for the above-mentioned prior art, the purpose of this utility model are
A kind of union connection Simple casing head is provided.It is simple and compact for structure, it is applied to the shallow oil-gas Layer drilling completion construction operation of mesolow
The wellhead assembly of tubing and casing is put, fixes and sealed to middle seat, and making traditional standard flanged joint into quick union connects, and slips is hanged
Hanging device structure simplifies, and hanger sealing makes the tight cap of union into and compresses sealing element excitation sealing performance.
Technical solution：In order to achieve the above objectives, a kind of union described in the utility model connects Simple casing head, including casing
Head ontology, slips support base, slips, sealing element, the tight cap of union, gate valve and silk plug, described sleeve pipe head ontology inside front are equipped with
Slips support base, slips support base inside are equipped with slips, and sealing element is equipped with above the slips, and the tight cap of union is arranged in sealing element
Top and the top that casing head ontology is spun on by connection screw thread, silk plug are arranged at the bypass of casing head ontology side, and gate valve is logical
Double male joint is crossed to be fixed at the bypass of the casing head ontology other side.
Further, the sealing element includes upper press ring, sealing ring and lower pressure ring, and lower pressure ring is equipped with above the slips,
It is equipped with sealing ring above lower pressure ring, upper press ring is equipped with above sealing ring.
Further, design will there are certain compression surpluses for the height of the upper press ring.Lower pressure ring plays support sealing ring
Effect, by rotating the tight cap of union, force effect appropriate promotes the inside and outside expansion of sealing ring to form sealing effect in upper press ring,
Lower pressure ring plays a part of to support sealing ring.
Further, the upper end of the slips support base and the bottom of lower pressure ring contradict, the slips and slips support base
It is inside and outside to be bonded by taper.
Further, described sleeve pipe head body interior lower end is equipped with screw thread, described sleeve pipe head ontology and surface pipe screw thread
Connection.
Further, the tight cap of the union is that union is threadedly coupled with casing head ontology top.Facilitate installing and dismounting, is convenient for
Maintenance.
Above-mentioned technical proposal can be seen that the beneficial effects of the utility model：
A kind of union described in the utility model connects Simple casing head, simple and compact for structure, and traditional standard flange is connected
It connects and makes quick union connection into, slips hanger structure is simplified, hanger sealing makes the tight cap of union into and compresses sealing element excitation
Sealing performance, light and low cost is easy to install and use, has a safety feature.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate.
A kind of union connection Simple casing head as shown in Figure 1, including casing head ontology 1,
The tight cap 5 of slips support base 2, slips 3, sealing element 4, union, double male joint 6, silk plug 7 and gate valve 8, described sleeve pipe head
1 inside front of ontology is equipped with slips support base 2, and 2 inside of slips support base is equipped with slips 3, and 3 top of the slips is equipped with sealing element
4, the tight cap of union 5 is arranged above sealing element 4 and is spun on by connection screw thread the top of casing head ontology 1, and the setting of silk plug 7 is covering
At 1 side bypass of tube head ontology, gate valve 8 is fixed on by double male joint 6 at 1 other side bypass of casing head ontology.
Sealing element 4 described in the present embodiment includes upper press ring 41, sealing ring 42 and lower pressure ring 43, and 3 top of the slips is set
There are lower pressure ring 43,43 top of lower pressure ring to be equipped with sealing ring 42,42 top of sealing ring is equipped with upper press ring 41.
Upper press ring 41 described in the present embodiment highly design will there are certain compression surplus, by rotating the tight cap 4 of union,
Force effect appropriate promotes the inside and outside expansion of sealing ring 42 to form sealing effect, lower pressure ring 43 plays support sealing ring in upper press ring 41
42 effect.
The upper end of slips support base described in the present embodiment 2 and the bottom of lower pressure ring 43 contradict, the slips 3 and slips branch
Support seat 2 is inside and outside to be bonded by taper.
1 interior lower end of casing head ontology described in the present embodiment is equipped with screw thread, described sleeve pipe head ontology 1 and surface pipe 10
It is threadedly coupled.
The tight cap 5 of union described in the present embodiment is that union is threadedly coupled with 1 top of casing head ontology.
It is solid end cap 71 on the left of silk plug 7 described in the present embodiment, right side is cock 72, is equipped in the cock 72 more
The outer surface of side shape endoporus, 72 right side of the cock is equipped with external screw thread, the nozzle screw thread of cock 72 and 1 left side of casing head ontology
Connection.
In actual use, after surface pipe 10 being cemented the well first, casing head ontology 1 is covered by lower thread precession surface layer
After pipe 10, then the wellbore for Suspension Technique casing 11 of spudding in, after protective casing 11 is completed to cement the well, by slips support base 2 with
Slips 3 is put into casing head ontology 1 and sets in hole, and slips 3 is made to hold protective casing 11 tightly, reserves cutting technique casing after specific dimensions
11, it is then put into lower pressure ring 43, sealing ring 42, upper press ring 41 in order, is finally putting into the tight cap 5 of union, it is tight by screwing union
Cap 5 excites sealing element 4, to ensure casing head sealing performance.
Embodiment is merely to illustrate the utility model rather than limitation the scope of the utility model, is reading this practicality
After novel, it is as defined in the appended claims that those skilled in the art fall within the application to the various equivalences of the utility model
Range.
Claims (6)
1. a kind of union connects Simple casing head, it is characterised in that：Including casing head ontology（1）, slips support base（2）, slips
（3）, sealing element（4）, the tight cap of union（5）, double male joint（6）, silk plug（7）And gate valve（8）, described sleeve pipe head ontology（1）Inside
Top is equipped with slips support base（2）, slips support base（2）Inside is equipped with slips（3）, the slips（3）Top is equipped with sealing element
（4）, the tight cap of union（5）It is arranged in sealing element（4）Top and casing head ontology is spun on by connection screw thread（1）Top, silk plug
（7）It is arranged in casing head ontology（1）At the bypass of side, gate valve（8）Pass through double male joint（6）It is fixed on casing head ontology（1）Separately
At the bypass of side.
2. a kind of union according to claim 1 connects Simple casing head, it is characterised in that：The sealing element（4）Including
Upper press ring（41）, sealing ring（42）With lower pressure ring（43）, the slips（3）Top is equipped with lower pressure ring（43）, lower pressure ring（43）On
Side is equipped with sealing ring（42）, sealing ring（42）Top is equipped with upper press ring（41）.
3. a kind of union according to claim 2 connects Simple casing head, it is characterised in that：The upper press ring（41）Highly
Design will there are certain compression surpluses.
4. a kind of union according to claim 3 connects Simple casing head, it is characterised in that：The slips support base（2）
Upper end and lower pressure ring（43）Bottom contradict, the slips（3）Outer diameter and slips support base（2）Internal diameter be all provided with and be set to cone
Degree.
5. a kind of union according to claim 1 connects Simple casing head, it is characterised in that：Described sleeve pipe head ontology（1）
Interior lower end is equipped with screw thread, described sleeve pipe head ontology（1）With surface pipe（10）It is threadedly coupled, the surface pipe（10）It is embedded
Cover protective casing（11）.
6. a kind of union according to claim 1 connects Simple casing head, it is characterised in that：The tight cap of union（5）With
Casing head ontology（1）Top is threadedly coupled for union.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165245.3U CN207795133U (en) | 2018-01-31 | 2018-01-31 | A kind of union connection Simple casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165245.3U CN207795133U (en) | 2018-01-31 | 2018-01-31 | A kind of union connection Simple casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795133U true CN207795133U (en) | 2018-08-31 |
Family
ID=63267030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820165245.3U Active CN207795133U (en) | 2018-01-31 | 2018-01-31 | A kind of union connection Simple casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961626A (en) * | 2022-04-27 | 2022-08-30 | 中国石油天然气集团有限公司 | Electric pump oil production wellhead well completion process using steel continuous pipe built-in cable |
-
2018
- 2018-01-31 CN CN201820165245.3U patent/CN207795133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961626A (en) * | 2022-04-27 | 2022-08-30 | 中国石油天然气集团有限公司 | Electric pump oil production wellhead well completion process using steel continuous pipe built-in cable |
| CN114961626B (en) * | 2022-04-27 | 2024-05-31 | 中国石油天然气集团有限公司 | Electric pump oil extraction wellhead completion process using steel coiled tubing built-in cable |
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