CN202900139U - Novel air drilling spin control head - Google Patents
Novel air drilling spin control head Download PDFInfo
- Publication number
- CN202900139U CN202900139U CN 201220623359 CN201220623359U CN202900139U CN 202900139 U CN202900139 U CN 202900139U CN 201220623359 CN201220623359 CN 201220623359 CN 201220623359 U CN201220623359 U CN 201220623359U CN 202900139 U CN202900139 U CN 202900139U
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- CN
- China
- Prior art keywords
- kelly bar
- seal
- washer
- pad
- novel air
- 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 a novel air drilling spin control head. The novel air drilling spin control head comprises a kelly bar which can move up and down and rotate on a well mouth, an inner hole and a washer matched with a kelly bar section are sleeved on the periphery of the kelly bar, the kelly bar can slide linearly relative to the washer and transmit torques, a seal tube is arranged at the lower end of the washer, the upper end of the seal tube and the washer are in a shell, a seal washer which is sleeved outside the kelly bar is further arranged on the washer, the seal washer, the washer and the upper end of the seal tube are all fixed inside the shell by a gland in a hold-down mode, the kelly bar is in seal contact with the inner hole of the seal washer and can move up and down relative to the inner hole of the seal washer, the lower section of the seal tube stretches into the well mouth, and O-shaped seal rings are arranged between an outer cylindrical surface of the seal tube lower section and an inner wall of the well mouth seal tube which is connected on the well mouth. The novel air drilling spin control head has the advantages of being capable of reducing structure and property requirements of seal pieces and cost, and meanwhile suitable for a four kelly bar matched with a general drilling machine, and beneficial for reducing device layout cost and maintenance cost.
Description
Technical field
The utility model relates to a kind of mining equipment of oil-gas reservoir, specifically a kind of novel air drilling rotary control head.
Background technology
In the development process of oil-gas reservoir, air drilling is develop rapidly one and reduces the new technology that cost increases again drilling efficiency after horizontal well drilling technology, compare with previous drilling mode, air drilling can make bottom rock be squeezed and projection, and generation tensile stress district, help drill bit to contact with rock, and then make the easier stratum that pierces of drill bit, thereby effectively improve the timeliness of drilling well.
According to the gas drilling technological process, for guaranteeing offshore boring island and personnel's safety, need the configuration swivel control head.It is divided into rotation and non-rotating two parts, and rotating part can rotate together with drill string, and non-rotating part and sealing device cooperate, and make the air flow direction discharge pipe that contains landwaste out from annular space.
At present, the swivel head of producing is both at home and abroad pressed glue core sealing drilling tool mode, can be divided into passive seal formula and realizing active sealing formula; Be divided into low-pressure type (being lower than 5MPa), medium-pressure type (5-10.5MPa) and high-pressure type (being higher than 10.5MPa) by the operating pressure rank.
In the gas drilling operation, surface casing pressure is generally lower, usually uses passive seal formula low-pressure type swivel control head.
The sealing of passive seal formula swivel control head is to realize that by the interference between glue core and the drilling tool well pressure energy enough helps envelope.Its advantage is: simple and reliable for structure, and installation, convenient disassembly, it is rapidly convenient to change the glue core, easily maintenance.Shortcoming is: need with six side's kelly bars, the glue core should be able to sealing drilling rod and kelly bar, its sealing surface external diameter variation greatly, the glue core life-span is shorter.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of seal reliable, installation cost is low, can be used with dissimilar kelly bars, can reduction equipment configuration expense and the low novel air drilling rotary control head of safeguarding cost.
Novel air drilling rotary control head of the present utility model includes the kelly bar that can move up and down and rotate at well head, the pad that the kelly bar outer race has endoporus to match with the kelly bar cross section, and kelly bar can relative linear slide with pad and transmitting torque; The pad lower end connects a sealed tube, and sealed tube upper end and pad are positioned at a housing, also is provided with on the pad and is enclosed within the outer sealing mat of kelly bar, and the upper end of sealing mat, pad and sealed tube all is fixed in the housing by a gland pressure holding; Described kelly bar also can move up and down relatively with sealing mat endoporus sealing contact; Described sealed tube hypomere stretches into well head, the external cylindrical surface of sealed tube hypomere and be connected between the wellhead sealing inside pipe wall of well head and be provided with the O RunddichtringO.
Described wellhead sealing pipe upper end is connected with one section guide holder, and the guide holder center has the guiding taper hole that upwards opens.
Between described wellhead sealing pipe lower end and the well head by clamp connection.
The utility model is simple in structure, manufacturing and easy for installation, it is born respectively kelly bar is moved up and down and the dynamic seal (packing) of two kinds of forms of motion rotating by being positioned at upper and lower two-part sealing mat and O RunddichtringO, structure and performance requirement to seal have been reduced, can adopt lower-cost conventional seal, thereby reduce cost; By the cooperation of hole shape in the sealing mat, go for the supporting cubic kelly bar of common rig simultaneously, be conducive to minimizing equipment configuration expense, reduce maintenance cost.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
As shown in the figure, this novel air drilling rotary control head includes the kelly bar 1 that can move up and down and rotate at well head 7, the pad 2 that the kelly bar outer race has endoporus to match with the kelly bar cross section, kelly bar 1 can with pad 2 relative linear slide and transmitting torques; Pad 2 lower ends connect a sealed tube 3, and sealed tube 3 upper ends and pad 2 are positioned at a housing 4, also are provided with on the pad 2 to be enclosed within the outer sealing mat 5 of kelly bar, and the upper end of sealing mat 5, pad 2 and sealed tube 3 all is fixed in the housing 4 by gland 6 pressure holdings; Kelly bar 1 also can move up and down relatively with the endoporus sealing contact of sealing mat 5; Described sealed tube 3 hypomeres stretch into well head 7, the external cylindrical surface of sealed tube 3 hypomeres and be connected between the inwall of wellhead sealing pipe 8 of well head and be provided with O RunddichtringO 9.Wellhead sealing pipe 8 upper ends are connected with one section guide holder 10, and the guide holder center has the guiding taper hole that upwards opens.Be connected by clip 11 between wellhead sealing pipe 8 lower ends and the well head 7.
In the utility model embodiment course of work, sealed tube 3 is with kelly bar 1 rotation, with the rotatory sealing of wellhead sealing pipe 8 by O RunddichtringO 9 realization well heads when creeping into.Housing, sealing mat and sealed tube 3 propose well head with kelly bar 1 during stacks, connect when kelly bar enters well behind the finishing drilling bar, and sealed tube 8 is introduced bottom well head sealed tubes 8 by guide holder 10, finishes Auto-mounting.More open clip 11 during bit change when needs, propose wellhead sealing pipe 8, realize bit change-over.
Claims (3)
1. novel air drilling rotary control head, include the kelly bar (1) that can move up and down and rotate at well head, it is characterized in that: the pad (2) that the kelly bar outer race has endoporus to match with the kelly bar cross section, kelly bar (1) can with the relative linear slide of pad (2) and transmitting torque; Pad (2) lower end connects a sealed tube (3), sealed tube (3) upper end and pad (2) are positioned at a housing (4), also be provided with on the pad (2) and be enclosed within the outer sealing mat (5) of kelly bar, the upper end of sealing mat (5), pad (2) and sealed tube (3) all is fixed in the housing (4) by a gland (6) pressure holding; Kelly bar (1) also can move up and down relatively with the endoporus sealing contact of sealing mat (5); Described sealed tube (3) hypomere stretches into well head (7), the external cylindrical surface of sealed tube (3) hypomere and be connected between the inwall of wellhead sealing pipe (8) of well head and be provided with O RunddichtringO (9).
2. novel air drilling rotary control head according to claim 1 is characterized in that: wellhead sealing pipe (8) upper end is connected with one section guide holder (10), and the guide holder center has the guiding taper hole that upwards opens.
3. novel air drilling rotary control head according to claim 1 and 2 is characterized in that: be connected by clip (11) between wellhead sealing pipe (8) lower end and the well head (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623359 CN202900139U (en) | 2012-11-23 | 2012-11-23 | Novel air drilling spin control head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623359 CN202900139U (en) | 2012-11-23 | 2012-11-23 | Novel air drilling spin control head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900139U true CN202900139U (en) | 2013-04-24 |
Family
ID=48120822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220623359 Expired - Fee Related CN202900139U (en) | 2012-11-23 | 2012-11-23 | Novel air drilling spin control head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900139U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763374A (en) * | 2015-03-10 | 2015-07-08 | 中国石油集团渤海钻探工程有限公司 | Mud umbrella for rotary control head |
| CN107178328A (en) * | 2017-07-13 | 2017-09-19 | 中国海洋石油总公司 | A kind of decentralization of swivel control head inner cylinder and recovery method and device |
| CN107489389A (en) * | 2017-08-30 | 2017-12-19 | 河南豫中地质勘察工程公司 | A kind of pneumatic down-hole hammer drilling well well head three-level sealing structure |
-
2012
- 2012-11-23 CN CN 201220623359 patent/CN202900139U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763374A (en) * | 2015-03-10 | 2015-07-08 | 中国石油集团渤海钻探工程有限公司 | Mud umbrella for rotary control head |
| CN107178328A (en) * | 2017-07-13 | 2017-09-19 | 中国海洋石油总公司 | A kind of decentralization of swivel control head inner cylinder and recovery method and device |
| CN107178328B (en) * | 2017-07-13 | 2023-07-14 | 中国海洋石油集团有限公司 | Method and device for lowering and recycling inner cylinder of rotary control head |
| CN107489389A (en) * | 2017-08-30 | 2017-12-19 | 河南豫中地质勘察工程公司 | A kind of pneumatic down-hole hammer drilling well well head three-level sealing structure |
| CN107489389B (en) * | 2017-08-30 | 2023-08-08 | 河南豫中地质勘查工程有限公司 | Wellhead three-stage sealing structure for pneumatic down-the-hole hammer drilling |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20161123 |