CN203769716U - Internal balance type well cementing head - Google Patents
Internal balance type well cementing head Download PDFInfo
- Publication number
- CN203769716U CN203769716U CN201420195766.5U CN201420195766U CN203769716U CN 203769716 U CN203769716 U CN 203769716U CN 201420195766 U CN201420195766 U CN 201420195766U CN 203769716 U CN203769716 U CN 203769716U
- Authority
- CN
- China
- Prior art keywords
- union
- group
- backing pin
- pin system
- well cementing
- 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.)
- Expired - Lifetime
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims description 21
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model provides an internal balance type well cementing head. The internal balance type well cementing head is characterized in that a body of the well cementing head is hollow, the upper end of the body is connected with a gland, and the lower end of the body is provided with an oil casing thread in a turning manner and is connected with a pipe string in a shaft. The internal balance type well cementing head is mainly characterized in that a balance groove is formed in an internal surface of the well cementing head, and a pin stop system, a rubber plug indicator and unions are mounted on the body. The internal balance type well cementing head includes a single-plug well cementing head and a two-plug well cementing head. The internal balance type well cementing head is simple in structure, convenient to use and maintain and high in safety.
Description
Technical field
The utility model relates to the solid completion tool technical field of petroleum and natural gas well, is a kind of cementing job cementing cement head.
Background technology
Existing cementing cement head mostly is outer balance type structure, and this structure is to realize the upper and lower pressure balance of plug by the high-voltage tube outside cementing head.Cementing link in cementing job process, because cement slurry density in pipe is greater than the outer drilling fluid density of pipe, the in the situation that of balance device not, the upper and lower pressure imbalance of rubber plug of cementing head, makes to replace link cementing head backing pin and opens difficulty, likely causes well cementation accident.General cementing head is to realize this object at outer setting balance pipe, but outer balance pipe has following shortcoming: the one, and complex structure, balance pipe apparatus damage of very easily damaging in carrying and use procedure, brings potential safety hazard; The 2nd, rubber tube is easily aging, and the life-span is shorter, in operation, can bring potential safety hazard, likely makes well cementing operation force interruption, causes well cementation accident.
Utility model content
The purpose of this utility model is to provide a kind of inner equilibrium formula cementing cement head, simple in structure, and working service is convenient, safe.
The technical solution of the utility model is: a kind of inner equilibrium formula cementing cement head, comprise gland and body, body upper end is connected with gland, lower end car has petroleum casing screw to be connected with the pipe string in pit shaft, it is characterized in that: body interior hollow, inner surface is processed with compensating groove, and the terminal of described compensating groove is the top union union extremely bottom, backing pin system, rubber plug indicator and union are installed on body, and backing pin system and union angle are 90 degree.
One group of backing pin system, one group of rubber plug indicator and two groups of unions are installed on body, described backing pin system is placed in bottom on union, under the union of the top, close union bottom, described rubber plug indicator is placed under backing pin system and near casing threads position, body lower end.
Arrangement two groups of backing pin systems and two groups of rubber plug indicators are in one plane installed on body and are arranged in three groups of unions in another plane; Wherein first group of backing pin system is placed on second group of union, topmost under union, near second group of union; First group of rubber plug indicator is placed under first group of backing pin system; Second group of backing pin system is placed in bottom on union, under second group of union, near union bottom; Second group of rubber plug indicator is placed under second group of backing pin system and near casing threads position, body lower end.
Advantage of the present utility model is as follows: the one, by the improvement of this body processing technology of cementing head, at chamber body processing compensating groove, the consumable accessorys such as balance pipe in original outer balanced type cementing-head device, balance pipe joint, rubber tube are eliminated, eliminate potential safety hazard, the safety and the application life that simplify the structure and improved instrument.The 2nd, the pressure rating of whole cementing head increases, and can be applicable to the cementing job of Holes of Complicated Wells, and range of application further expands, and both can, for single plug cementing cement head, also be applicable to two plug cementing cement heads.The 3rd, easy and simple to handle, cementing head lower end is directly connected with pipe string in pit shaft, and union can be connected with cementing equipment by manifold of ground, just can realize moulding plug and cementing job.
Brief description of the drawings
Fig. 1-1st, inner equilibrium formula list plug cementing cement head structural representation.
Fig. 1-2 is the lateral view of Fig. 1-1.
Fig. 2-1st, the two plug of inner equilibrium formula cementing cement head structural representation.
Fig. 2-2nd, the lateral view of Fig. 2-1.
In figure: gland 1, body 2, backing pin system 3, rubber plug indicator 4, union 5, compensating groove 6, balance pipe 7
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of inner equilibrium formula cementing cement head, comprises gland 1 and body 2, and body 2 lower end cars have petroleum casing screw to be connected with the pipe string in pit shaft, and upper end is connected with gland 1, is distributed with backing pin system 3 on body 2, rubber plug indicator 4 and union 5.Body 2 inner hollow, inner surface is processed with compensating groove 6, terminal be topmost union 5 to union 5 bottom.
The utility model has two kinds of embodiment: single plug cementing cement head and two plug cementing cement head
As shown in Fig. 1-1, Fig. 1-2, wherein single plug cementing cement head has one group of backing pin system 3, one group of rubber plug indicator 4, two groups of unions 5.Backing pin system 3 is 90 degree with union 5 angles.Backing pin system 3 is placed in bottom on union 5, and topmost under union 5, near union 5 bottom, described rubber plug indicator 4 is placed under backing pin system 3 and near body 2 casing threads positions, lower end.
As shown in Fig. 2-1, Fig. 2-2, two plug cementing cement heads have two groups of backing pin systems 3, two groups of rubber plug indicators 4, three groups of 5, two groups of backing pin systems of union 3 arrange and spend with union 5 angles 90 at same plane with rubber plug indicator 4.Wherein first group of backing pin system 3 is placed on second group of union 5, topmost under union 5, near second group of union 5; First group of rubber plug indicator 4 is placed under first group of backing pin system 3; Second group of backing pin system 3 is placed in bottom on union 5, under second group of union 5, near union 5 bottom; Second group of rubber plug indicator 4 is placed under second group of backing pin system 3 and near casing threads position, body lower end.Require union 5 also can connect into manifold form according to user.
The course of work is as follows:
In the time carrying out cementing operation operation, body 2 lower ends are connected with pipe string in well, dismantle after gland 1, to double plug cement head, the backing pin of first group of backing pin system 3 is all screwed into open mode, the backing pin of second group of backing pin system 3 is all screwed into closed condition, pack bottom plug to the second group backing pin system 3 positions into, again the backing pin of first group of backing pin system 3 is threaded to closed condition, pack top cement plug into, screw gland 1, replacement pipeline, cementing pipeline are connected on respectively topmost and bottom on union 5, just can carry out cementing job.
To single plug cement head, be that the backing pin of first group of backing pin system 3 is threaded to closed condition, pack plug into, compress gland 1, replacements pipeline, cementing pipeline are connected with union 5 bottom with the top respectively, just can carry out cementing job.
Claims (3)
1. inner equilibrium formula cementing cement head, comprise gland (1) and body (2), body (2) upper end is connected with gland (1), lower end car has petroleum casing screw to be connected with the pipe string in pit shaft, it is characterized in that: body (2) inner hollow, inner surface is processed with compensating groove (6), the terminal of described compensating groove (6) is the top union (5) union (5) extremely bottom, backing pin system (3), rubber plug indicator (4) and union (5) are installed on body (2), and backing pin system (3) is 90 degree with union (5) angle.
2. inner equilibrium formula cementing cement head as claimed in claim 1, it is characterized in that: one group of backing pin system (3), one group of rubber plug indicator (4) and two groups of unions (5) are installed on body (2), described backing pin system (3) is placed in bottom on union (5), topmost under union (5), close union (5) bottom, described rubber plug indicator (4) is placed under backing pin system (3) and near casing threads position, body (2) lower end.
3. inner equilibrium formula cementing cement head as claimed in claim 1, is characterized in that: arrangement two groups of backing pin systems (3) and two groups of rubber plug indicators (4) are in one plane installed on body (2) and are arranged in the three groups of unions (5) in another plane; Wherein first group of backing pin system (3) is placed on second group of union (5), topmost under union (5), near second group of union (5); First group of rubber plug indicator (4) is placed under first group of backing pin system (3); Second group of backing pin system (3) is placed in bottom on union (5), under second group of union (5), near union (5) bottom; Second group of rubber plug indicator (4) is placed under second group of backing pin system (3) and near casing threads position, body (2) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195766.5U CN203769716U (en) | 2014-04-18 | 2014-04-18 | Internal balance type well cementing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195766.5U CN203769716U (en) | 2014-04-18 | 2014-04-18 | Internal balance type well cementing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203769716U true CN203769716U (en) | 2014-08-13 |
Family
ID=51286917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195766.5U Expired - Lifetime CN203769716U (en) | 2014-04-18 | 2014-04-18 | Internal balance type well cementing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203769716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953311A (en) * | 2014-04-18 | 2014-07-30 | 西安航威石化设备有限公司 | Internal balanced type well cementation cement head |
-
2014
- 2014-04-18 CN CN201420195766.5U patent/CN203769716U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953311A (en) * | 2014-04-18 | 2014-07-30 | 西安航威石化设备有限公司 | Internal balanced type well cementation cement head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |