CN201129165Y - Well cementing cement head balance pipe apparatus - Google Patents
Well cementing cement head balance pipe apparatus Download PDFInfo
- Publication number
- CN201129165Y CN201129165Y CNU2007201736997U CN200720173699U CN201129165Y CN 201129165 Y CN201129165 Y CN 201129165Y CN U2007201736997 U CNU2007201736997 U CN U2007201736997U CN 200720173699 U CN200720173699 U CN 200720173699U CN 201129165 Y CN201129165 Y CN 201129165Y
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- pipe
- elbow
- adapting pipe
- tube connector
- cementing
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Abstract
The utility model provides a set of cementing head balance pipe device, which comprises an elbow 1, an upper socket pipe 4, a connecting pipe 6, a lower socket pipe 9 and a sub 8, and the above components are in hollow tubular structure. One end of the elbow 1 is communicated with the upper end of a chamber body 10 of a cement plug of the cementing head, one end of the sub 8 is fixedly connected and communicated with an indicator 12 of the cement plug of the cementing head, the elbow 1 is in sealed connection with the connecting pipe 6 via the upper socket pipe 4, and the sub 8 is in sealed connection with the connecting pipe 6 via the lower socket pipe 9. Therefore, a pressure channel is formed by the sequential connection of the elbow 1, the upper socket pipe 4, the connecting pipe 6, the lower socket pipe 9 and the sub 8. After communicating the balance pipe device with a cementing head body, a channel is formed outside the cementing head chamber by the balance pipe device, which enables the pressures to be communicated between an upper pressure pipeline and a lower pressure pipeline, and vacuum can not form because of pressure pumping action, thereby achieving the purpose of balancing upper and lower pressures of the plug.
Description
Technical field
The utility model relates to the cementing head of well cementation usefulness in a kind of oil drilling, more specifically, relates to a kind of cementing concrete head balance pipe device.
Background technology
As everyone knows, the cementing well operation is that whole oil creeps into an important step in the operation process, and the quality of well cementing operation quality directly has influence on follow-up oil or air to open is adopted operation.And the cementing concrete head is essential and play a significant role device in the well cementing operation equipment, the good and bad efficient that directly influences well cementing operation of this device performance.
In well cementing operation during cementing, because the whereabouts rapidly of cement paste easily form vacuum below plug, thereby it is poor to produce an immense pressure up and down at plug, the pressure that forms because of pressure differential acts on the plug and passes to backing pin, and this pressure very easily causes backing pin to lose efficacy.For balance plug pressure up and down, avoid the formation of pressure differential, a kind of balance pipe is set on cementing head usually.Present existing bascule has embedded groove or outside to add the balance pipe dual mode.Embedded groove is owing to exist the problem of processing aspect, and destroys the plug leather cup easily, and seldom adopt at the scene.That generally adopts at present adds the balance pipe device, also there has been defective: because of inevitably having the cement residue in the well cementing operation back balance pipe, and not easy cleaning and maintenance, accumulate over a long period, lost efficacy with regard to causing the balance pipe device to stop up easily, made the effect of downforce on its balance plug.
Summary of the invention
The purpose of this utility model is the defective that exists in the above-mentioned prior art in order to overcome to provide a kind of cementing concrete head balance pipe device, and this compensator device top is welded on the body of cementing head, and the bottom is welded on the indicator of cementing head.After plug was put into the cement head cavity, the balance pipe device just produced a passage beyond the cementing head cavity, make up and down between the pressure line, and pressure communication, and can not form vacuum owing to the pressure swabbing action, thus reach the purpose of downforce on the balance.This apparatus structure rationally, be convenient to installing/dismounting, safe and reliable.
The invention provides a kind of cementing head balance pipe device, it comprises elbow, last adapting pipe, tube connector, following adapting pipe and pipe nipple.
Wherein said elbow, last adapting pipe, tube connector, following adapting pipe and pipe nipple are hollow tubular structure.Elbow one end is fixedlyed connected with the cavity upper end of cementing head dress plug and is communicated, and pipe nipple one end is fixedlyed connected with cementing head plug indicator and communicated.The described fixedly connected existing various fixedly connected modes in the prior art that adopt, it is fixedly connected that the present invention is preferably welding manner.
Described elbow also is connected with tube connector by last adapting pipe: the elbow other end is connected with clamp nut with last adapting pipe upper end, and is sealed.Sealing means preferably seals with pad, promptly adopts pad to compress sealing between the contact jaw of elbow and last adapting pipe, and thrust produces by clamp nut.Described pad is a gasket seal commonly used in the prior art, is preferably rubber sheet gasketing.Last adapting pipe lower end and tube connector upper end to be being threaded, and sealed.Be threaded herein and be provided with screw thread between the outer wall that is preferably the adapting pipe lower end and tube connector upper end inwall and be threaded.Sealing means preferably seals with sealing ring, promptly goes up adapting pipe lower end outer wall and tube connector upper end inwall contacted part, is provided with seal groove, in sealing ring be housed seal.Described sealing ring is a sealing ring commonly used in the prior art, is preferably rubber seal.
Described pipe nipple also is connected with tube connector by following adapting pipe: the pipe nipple other end is connected with clamp nut with following adapting pipe lower end, and is sealed.Sealing means preferably seals with pad, promptly adopts pad to compress sealing between the contact jaw of pipe nipple and following adapting pipe, and thrust produces by clamp nut.Described pad is a gasket seal commonly used in the prior art, is preferably rubber sheet gasketing.Following adapting pipe upper end and tube connector lower end to be being threaded, and sealed.Be threaded herein and be provided with screw thread between the outer wall that is preferably down adapting pipe upper end and tube connector lower end inwall and be threaded.Sealing means preferably seals with sealing ring, promptly descends adapting pipe upper end outer wall and the contacted part of tube connector lower end inwall, is provided with seal groove, in sealing ring be housed seal.Described sealing ring is a sealing ring commonly used in the prior art, is preferably rubber seal.
Cementing head of the present invention with in the balance pipe device in order to prevent the loosening of in operations involving high pressure process clamp nut, with locknut clamp nut is further compressed.
For the ease of installing/dismounting, leave certain handling distance after clamp nut tightens and between the port of tube connector, make nut carry out rollback along last or following adapting pipe.
Whole balance pipe device can be finely tuned by tube connector for the ease of installing, and in installation process, because elbow and pipe nipple all are fixedly connected on the cementing head body, so can finely tune by the screw thread at tube connector two ends, makes to be in place.
Connect and compose pressure channel successively by elbow, last adapting pipe, tube connector, following adapting pipe and pipe nipple thus.Pressure reduction between balance cementing head body and the balance pipe unit rapidly.
Cementing concrete head balance pipe device of the present utility model compared with prior art has following outstanding effect:
1. solve the well cementation difficult problem that balance pipe is easily blocked up in well cementing operation under the various circulatory mediators, avoided the generation of conventional cementing head mesohigh swabbing;
2. the balance pipe device is easy to installing/dismounting, is easy to maintenance, all can check maintenance after using up at every turn;
3. this apparatus structure is reasonable, safe and reliable, reaches security insurance in the high pressure well cementing operation;
4. each part all has good interchangeability and independence, can independently change consumable accessory.
Description of drawings
Fig. 1 be cementing concrete head balance pipe device vertically partly cut open figure.
Fig. 2 is the syndeton schematic diagram of cementing concrete head balance pipe device and cementing head body.
The specific embodiment
Below with reference to accompanying drawing the utility model is described in detail.It should be noted that following description only represented a kind of specific embodiment of the present utility model,, and the utility model is not limited just in order further the utility model to be described.
As shown in Figure 2, an end of elbow 1 is welded on cavity 10 upper ends of cementing head dress plug, and its inside communicates, and an end of pipe nipple 8 is welded on the cementing head plug indicator 12, and its inside communicates.
Cementing concrete head balance pipe device of the present invention as shown in Figure 1, it comprises elbow 1, last adapting pipe 4, tube connector 6, following adapting pipe 9 and pipe nipple 8.Elbow 1, last adapting pipe 4, tube connector 6, following adapting pipe 9 and pipe nipple 8 are hollow tubular structure.Take on 6 upper end outer walls and the last adapting pipe 4 lower end inwalls and be equipped with respective threads, between to be threaded.Tube connector 6 upper end outer walls and the contacted part of last adapting pipe 4 lower end inwalls are provided with seal groove, in first sealing ring 5 be housed seal.Above respectively clamp nut 2 compresses with lower compression nut 14 and is connected between the other end of elbow 1 and last adapting pipe 4 upper ends and between the other end of pipe nipple 8 and following adapting pipe 9 lower ends, and between elbow 1 and last adapting pipe 4, compress sealing with first pad 3 and second pad 13 respectively between pipe nipple 8 and the following adapting pipe 9; Thrust produces by last clamp nut 2 and lower compression nut 14.And, use locknut 7 and following locknut 16 and respectively last clamp nut 2 and lower compression nut 14 are compressed in order to prevent the loosening of in operations involving high pressure process clamp nut.
Reaching the mode that compresses with clamp nut between pipe nipple 8 and the following adapting pipe 9 between above-described elbow 1 and the last adapting pipe 4 connects.Clamp nut described herein and compress ways of connecting and be a kind of connected mode that compresses of the prior art.Specifically can be described as: clamp nut is a cup-like structure, and there is a through hole centre at the bottom of its glass, and the cup inwall is provided with screw thread.Also be provided with screw thread on the outer wall of the end four that elbow 1 and pipe nipple 8 will be connected with adapting pipe.All there is the annular projection of stretching out at the mouth of pipe place of the lower end of the upper end of last adapting pipe 4 or following adapting pipe 9, and the external diameter of annular projection is greater than the external diameter of adapting pipe body.The aperture of the central through hole at the cup end of clamp nut is more than or equal to adapting pipe body external diameter, less than adapting pipe mouth of pipe annular projection external diameter.Thus the mouth of pipe of adapting pipe may be stuck in clamp nut the cup end central through hole on.The screw thread that the cup inwall of last clamp nut 2 and lower compression nut 14 is provided with, can with the screw thread on the elbow 1 one end outer walls, and pipe nipple 8 one end outer walls on threads engaged be threaded.Adapting pipe is passed clamp nut, the annular projection of the mouth of pipe just is stuck in adapting pipe the cup end of clamp nut, when elbow 1 or pipe nipple 8 threaded ends were screwed in the cup of clamp nut 2 and lower compression nut 14 respectively, the lower end of the upper end of elbow 1 one ends and last adapting pipe 4 and pipe nipple 8 one ends and following adapting pipe 9 linked together with regard to compacted.
For the ease of installing/dismounting, after clamp nut tightened, distance made clamp nut carry out rollback along last adapting pipe 4 or following adapting pipe 9 greater than the length of clamp nut between an end of its close tube connector 6 and the port of tube connector 6, is convenient to loading and unloading.
Whole device can be finely tuned by tube connector 6 for the ease of installing: in installation process, because elbow 1 and pipe nipple 8 all are welded on the cementing head body, so can finely tune by tube connector 6, make to be in place.
Thus, connect and compose pressure channel successively by elbow 1, last adapting pipe 4, tube connector 6, following adapting pipe 9 and pipe nipple 8.Cavity and the indicator of this balance pipe device with the dress plug of cementing head body is connected, after plug is put into the cement head cavity, the balance pipe device just produces a passage beyond the cementing head cavity, make up and down between the pressure line, pressure communication, and can not form vacuum, pressure reduction between balance cementing head body and the balance pipe unit rapidly owing to the pressure swabbing action, well reached when cementing the purpose of downforce on the plug in the balance cementing head.With respect to the balance pipe device of prior art, this device has the obstruction of being difficult for, and is easy to care and maintenance, is convenient to installing/dismounting, safe and reliable characteristics.
Claims (5)
1. cementing concrete head balance pipe device, it comprises elbow [1], goes up adapting pipe [4], tube connector [6], adapting pipe [9] and pipe nipple [8] down;
It is characterized in that elbow [1], last adapting pipe [4], tube connector [6], following adapting pipe [9] and pipe nipple [8] are hollow tubular structure; Elbow [1] one end is fixedlyed connected with cavity [10] upper end of cementing head dress plug and is communicated, and pipe nipple [8] one ends are fixedlyed connected with cementing head plug indicator [12] and communicated; Elbow [1] is connected with tube connector [6] by last adapting pipe [4], and above clamp nut [2] is connected on elbow [1] other end and the last adapting pipe [4], and is sealed, and being threaded, and is sealed on last adapting pipe [4] lower end and the tube connector [6]; Pipe nipple [8] is connected with tube connector [6] by following adapting pipe [9], and pipe nipple [8] other end is connected with lower compression nut [14] with following adapting pipe [9] lower end, and is sealed, on the following adapting pipe [9] with tube connector [6] lower end being threaded, and sealed; Connect and compose pressure channel successively by elbow [1], last adapting pipe [4], tube connector [6], following adapting pipe [9] and pipe nipple [8] thus.
2. a kind of cementing concrete head balance pipe device according to claim 1 is characterized in that between the contact jaw of elbow [1] and last adapting pipe [4], all adopts first pad [3] and second pad [13] to compress sealing respectively between the contact jaw of pipe nipple [8] and following adapting pipe [9].
3. a kind of cementing concrete head balance pipe device according to claim 1, locknut [16] compresses described upward clamp nut [2] and described lower compression nut [14] respectively to it is characterized in that adopting locknut [7] to reach down.
4. a kind of cementing concrete head balance pipe device according to claim 1 is characterized in that adapting pipe [4] lower end outer wall and tube connector [6] upper end inwall contacted part, is provided with seal groove, in first sealing ring [5] be housed seal; Following adapting pipe [9] upper end outer wall and the contacted part of tube connector [6] lower end inwall are provided with seal groove, in second sealing ring [15] be housed seal.
5. a kind of cementing concrete head balance pipe device according to claim 1, fixedly connected by welding manner in cavity [10] upper end that it is characterized in that elbow [1] one end and cementing head dress plug, pipe nipple [8] one ends are fixedlyed connected by welding manner with cementing head plug indicator [12].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201736997U CN201129165Y (en) | 2007-10-19 | 2007-10-19 | Well cementing cement head balance pipe apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201736997U CN201129165Y (en) | 2007-10-19 | 2007-10-19 | Well cementing cement head balance pipe apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129165Y true CN201129165Y (en) | 2008-10-08 |
Family
ID=40017005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201736997U Expired - Lifetime CN201129165Y (en) | 2007-10-19 | 2007-10-19 | Well cementing cement head balance pipe apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129165Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409999A (en) * | 2011-12-05 | 2012-04-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method for forcible unlocking tool of downhole safety valve |
| 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 |
-
2007
- 2007-10-19 CN CNU2007201736997U patent/CN201129165Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409999A (en) * | 2011-12-05 | 2012-04-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method for forcible unlocking tool of downhole safety valve |
| CN102409999B (en) * | 2011-12-05 | 2015-02-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method for forcible unlocking tool of downhole safety valve |
| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHELFOIL PETROLEUM EQUIPMENT & SERVICES CO., LTD. Assignor: Research Institute of petroleum exploration and development|China Petroleum Chemical Co, China Petroleum Chemical Co Contract record no.: 2012990000433 Denomination of utility model: Well cementing cement head balance pipe apparatus Granted publication date: 20081008 License type: Exclusive License Record date: 20120620 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |