CN202266213U - Continuous cyclic drilling short piece - Google Patents
Continuous cyclic drilling short piece Download PDFInfo
- Publication number
- CN202266213U CN202266213U CN 201120358340 CN201120358340U CN202266213U CN 202266213 U CN202266213 U CN 202266213U CN 201120358340 CN201120358340 CN 201120358340 CN 201120358340 U CN201120358340 U CN 201120358340U CN 202266213 U CN202266213 U CN 202266213U
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- CN
- China
- Prior art keywords
- valve seat
- drilling
- valve body
- joint
- valve base
- 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 - Fee Related
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Abstract
The utility model relates to the technical field of oil field drilling, in particular to a continuous cyclic drilling short piece for improving the drilling efficiency. An upper joint and a lower joint of the short piece are connected with each other in a screwed manner; a quick port is formed in the side face of the upper joint; an upper valve seat and a lower valve seat are arranged on the upper joint and the lower joint respectively; a spherical valve body is arranged between the upper valve seat and the lower valve seat, and is provided with a T-shaped tee joint hole; the upper valve seat and the upper joint as well as the upper valve seat and the spherical valve body are sealed by sealing rings; and the lower valve seat and the lower joint as well as the lower valve seat and the spherical valve body are sealed by sealing rings. According to the continuous cyclic drilling short piece, a single footage can be assembled and disassembled without stopping a pump, and continuous cycle of drilling liquid is guaranteed. The shortcoming that the pump and the cycle of the drilling liquid are required to be stopped during assembly and disassembly of the single footage in the prior art is overcome.
Description
Technical field:
The utility model relates to a kind of oil drilling technical field, particularly a kind of continuous circulating drilling pipe nipple that improves drilling efficiency.
Background technology:
In the conventional drilling process, when a single drilling depth is accomplished, need termination of pumping to make up a joint.Borehole pump cuts out before making up a joint and after completion makes up a joint, restarts, and sets up circulation.When drilling fluid is become when static by recurrent state, shaft bottom borehole wall pressure reduces, and in fracture pressure and pore pressure grad window narrows block of cells such as deep-sea well, is prone to cause well kick; In the presser sensor well, possibly form bit freezing because drilling liquid pressure is lower than caving pressure and causes cave-in; In long horizontal segment horizontal well and extended reach well, because drilling fluid stops circulation, the drilling cuttings easy glide forms cutting bed to low-side well bore, reduces effective hole diameter, has increased the moment of torsion and the resistance of drill string; In hp-ht well, can not be in time the heat of drill bit and the generation of shaft bottom drilling tool be carried away and be prone to cause that the drilling tool result of use is poor, the reduction in application life owing to stop circulating fluid; When under balance pressure drilling; Interrupt circulation and make that the pressure in the annular space is extremely unstable; Cause wellbore instability and cave-in, bit freezing, pressure break stratum to cause down hole problems such as leakage and the injury of generation oil reservoir; The serious down hole problem that possibly cause has no resolution through long time treatment, causes filling out well bury drills tool and has had a strong impact on the drilling well normal construction, causes enormous economic loss.The pressure that the recovery circulation time brings increases same extended reach well, presser sensor well, deep well, the underbalance well etc. given and brings many adverse effects, has a strong impact on drilling well normal construction and efficient.
The utility model content:
The technical problem that the utility model will solve provides a kind of continuous circulating drilling pipe nipple, and the not termination of pumping in the single process that realized unloading of this pipe nipple guarantees the continuous circulation of drilling fluid.Overcome prior art needs termination of pumping, stops circulating fluid in the single process of unloading deficiency.
The technical scheme that the utility model is taked is: a kind of continuous circulating drilling pipe nipple comprises top connection, lower contact, upper valve base, lower valve base and spherical valve body; Top connection and lower contact screwed connection; The top connection side has fast interface; Upper valve base, lower valve base place respectively in top connection, the lower contact, between upper valve base, lower valve base, spherical valve body are housed, and spherical valve body has three through holes of " T " font; All seal between upper valve base and top connection, the spherical valve body, all seal between lower valve base and lower contact, the spherical valve body through sealing ring through sealing ring.
The beneficial effect of the utility model is: the utility model is built-in with spherical valve body and has the structure of fast interface in the top connection side owing to having adopted at pipe nipple, thereby has not termination of pumping in the single process of unloading, and guarantees the function of the continuous circulation of drilling fluid; Thereby reduce the down-hole pressure fluctuation that causes because of termination of pumping and the drilling fluid long period of soaking borehole wall that causes because of stopping to circulate causes caving in and down hole problem such as drilling cuttings deposition, normally the carrying out of assurance extended reach well, long horizontal segment horizontal well, deep well and special responsive well construction.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the A-A cross-sectional view sidelong of Fig. 1.
The specific embodiment:
Like Fig. 1, shown in Figure 2, a kind of continuous circulating drilling pipe nipple comprises top connection 1, lower contact 2, upper valve base 3, lower valve base 4 and spherical valve body 5; Top connection 1 and lower contact 2 screwed connections, top connection 1 side has fast interface 6, and upper valve base 3, lower valve base 4 place respectively in top connection 1, the lower contact 2; Between upper valve base 3, lower valve base 4, spherical valve body 5 is housed; Spherical valve body 5 has three through holes of " T " font, controls turning to of duct through the control handle 8 of both sides, when normally creeping into; Spherical valve body 5 is in connected state up and down, and ball valve side opening 9 is positioned at the position of fast interface 6 dorsad; All seal between upper valve base 3 and top connection 1, the spherical valve body 5, all seal between lower valve base 4 and lower contact 2, the spherical valve body 5 through sealing ring 7 through sealing ring 7.
During the utility model work, be connected the utility model single in advance or the column upper end, on rig floor, sequence, can directly use when needing.When normally creeping into, spherical valve body 5 is in connected state up and down, and drilling fluid directly gets into the drilling rod bottom through pipe nipple by top; After the thribble that has the utility model has been bored, side is gone into quick plug insert fast interface 6, spherical valve body 5 is rotated 90 degree; Paths in the sealing; Connect bypass channel, make spherical valve body 5 be in the logical state of side, drilling fluid gets in the drilling rod through fast interface 6 and circulates.After drill string connected completion, conversion spherical valve body 5 pass-through states were normally crept into.
Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (1)
1. a continuous circulating drilling pipe nipple comprises top connection (1), lower contact (2), upper valve base (3), lower valve base (4) and spherical valve body (5); It is characterized in that: top connection (1) and lower contact (2) screwed connection; Top connection (1) side has fast interface (6); Upper valve base (3), lower valve base (4) place respectively in top connection (1), the lower contact (2); Between upper valve base (3), lower valve base (4), spherical valve body (5) is housed; Spherical valve body (5) has three through holes of " T " font, all seals through sealing ring (7) between upper valve base (3) and top connection (1), the spherical valve body (5), all seals through sealing ring (7) between lower valve base (4) and lower contact (2), the spherical valve body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358340 CN202266213U (en) | 2011-08-28 | 2011-08-28 | Continuous cyclic drilling short piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358340 CN202266213U (en) | 2011-08-28 | 2011-08-28 | Continuous cyclic drilling short piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266213U true CN202266213U (en) | 2012-06-06 |
Family
ID=46157011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358340 Expired - Fee Related CN202266213U (en) | 2011-08-28 | 2011-08-28 | Continuous cyclic drilling short piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266213U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485730A (en) * | 2013-10-11 | 2014-01-01 | 长江大学 | Uninterrupted air drilling circulating nipple |
| CN103615200A (en) * | 2013-11-21 | 2014-03-05 | 深圳市远东石油钻采工程有限公司 | Guide pillar type continuous loop connection pup joint for drilling |
| CN104329039A (en) * | 2014-09-03 | 2015-02-04 | 中国石油天然气集团公司 | Continuous circulating valve |
| CN108590555A (en) * | 2018-04-13 | 2018-09-28 | 中国石油大学胜利学院 | A kind of Continuous Circulation Drilling System T-type integrated form triple valve and its application method |
-
2011
- 2011-08-28 CN CN 201120358340 patent/CN202266213U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485730A (en) * | 2013-10-11 | 2014-01-01 | 长江大学 | Uninterrupted air drilling circulating nipple |
| CN103615200A (en) * | 2013-11-21 | 2014-03-05 | 深圳市远东石油钻采工程有限公司 | Guide pillar type continuous loop connection pup joint for drilling |
| CN103615200B (en) * | 2013-11-21 | 2016-06-15 | 深圳市远东石油钻采工程有限公司 | Drilling well guide colume type circulates connecting short section continuously |
| CN104329039A (en) * | 2014-09-03 | 2015-02-04 | 中国石油天然气集团公司 | Continuous circulating valve |
| CN108590555A (en) * | 2018-04-13 | 2018-09-28 | 中国石油大学胜利学院 | A kind of Continuous Circulation Drilling System T-type integrated form triple valve and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140828 |
|
| EXPY | Termination of patent right or utility model |