CN204729043U - Radial jet weight control device on drilling bit - Google Patents
Radial jet weight control device on drilling bit Download PDFInfo
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- CN204729043U CN204729043U CN201520501153.4U CN201520501153U CN204729043U CN 204729043 U CN204729043 U CN 204729043U CN 201520501153 U CN201520501153 U CN 201520501153U CN 204729043 U CN204729043 U CN 204729043U
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- sliding sleeve
- central tube
- load cover
- control device
- spring
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Abstract
The utility model discloses a kind of radial jet weight control device on drilling bit, comprise top connection (1), spring (3), load cover (4), central tube (5), sliding sleeve (6), lower contact (7), described top connection (1) is fixedly connected on the upper end of central tube (5), described central tube (5) is arranged in load cover (4), the upper surface of described load cover (4) coordinates with the lower surface of top connection (1) is spacing, described sliding sleeve (6) is slidably disposed on intersegmental part under load cover (4), described lower contact (7) is fixed on the lower end of sliding sleeve (6), it is outside that described spring (3) is enclosed within central tube (5), and the two ends of spring (3) are pushed up respectively and are arranged between load cover (4) and sliding sleeve (6).Due to the control having spring to carry out ballast, ensure that the pressure of the drill applies stable, controlled, solve the technical problem that the pressure of the drill shakiness increases windowing task difficulty, improve success rate and the efficiency of radial jet drilling process technology.
Description
Technical field
The utility model belongs to the technical field of drilling well, is specifically related to a kind of radial jet weight control device on drilling bit.
Background technology
Radial jet drilling process technology is the novel technique of a kind of oil formation improvement volume increase of rising in the world recent years.The principle of technique is: the coiled tubing using band nozzle, act on by the hydraulic drilling of high-pressure spray on the different directions in oil reservoir and get out multiple slim-hole, lateral penetration contaminated zone, former well is allowed to increase drainage area, increase earial drainage radius and the area of former well, thus reach the object reducing oil flow resistance, volume increase.In the operation process of this process implementing, by motor grappling oil pipe, motor control the pressure of the drill, while rotary drilling, inner screw advances, and the pressure of the drill acts directly on drill bit, carries out windowing task.But because motor is in down-hole, when windowing, the shake of drill bit and pipe string can affect the control of motor to the pressure of the drill, and ground is difficult to carry out effective control operation to the pressure of the drill, cause being difficult to effectively control the pressure of the drill and stable applying the pressure of the drill, increase the difficulty of windowing task, this process implementing success rate and efficiency are reduced, and easily causes equipment damage and economic loss.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present utility model be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding various aspects of the present utility model better, therefore, should be appreciated that it is discuss to read these with this angle, instead of admit prior art.
Utility model content
The purpose of this utility model is avoid deficiency of the prior art and provide a kind of radial jet weight control device on drilling bit, and it effectively can control the pressure of the drill and stable applying the pressure of the drill.
The purpose of this utility model is achieved through the following technical solutions:
A kind of radial jet weight control device on drilling bit is provided, comprise top connection, spring, load cover, central tube, sliding sleeve, lower contact, described top connection is fixedly connected on the upper end of central tube, described central tube is arranged in load cover, the upper surface of described load cover coordinates with the lower surface of top connection is spacing, described sliding sleeve is slidably disposed on the lower intersegmental part of load cover, described lower contact is fixed on the lower end of sliding sleeve, described spring housing is outside at central tube, and the two ends of spring are pushed up respectively and are arranged between load cover with sliding sleeve.
Wherein, described sliding sleeve epimere is enclosed within the hypomere of central tube slidably, and described sliding sleeve upper end inwall is provided with spacing preiection, and central tube lower end outer wall is provided with the positive stop lug boss coordinated with spacing preiection.
Wherein, the inwall of described load set upper side is provided with step, and the upper end of described spring withstands on step.
Wherein, described load cover, sliding sleeve are provided with circulation port.
Wherein, sealing ring is provided with between described top connection and central tube.
Wherein, lower seal is provided with between described lower contact and sliding sleeve.
The beneficial effects of the utility model: when coiled tubing connects under weight control device on drilling bit in seating nipple, press down tubing string, load cover is withstood motionless by top connection, top connection, load cover, central tube compress spring downwards, by the drill bit of the pressure of the drill tool string below lower contact is delivered to.Due to the control having spring to carry out ballast, ensure that the pressure of the drill applies stable, controlled, solve the technical problem that the pressure of the drill shakiness increases windowing task difficulty, improve success rate and the efficiency of radial jet drilling process technology.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of radial jet weight control device on drilling bit.
Detailed description of the invention
The technical solution of the utility model is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Core of the present utility model is to provide a kind of radial jet weight control device on drilling bit, and it effectively can control the pressure of the drill and stable applying the pressure of the drill.
As shown in Figure 1, radial jet weight control device on drilling bit described in the utility model, comprise top connection 1, spring 3, load cover 4, central tube 5, sliding sleeve 6, lower contact 7, described top connection 1 is fixedly connected on the upper end of central tube 5, be provided with sealing ring 2 in multiple tracks between described top connection 1 and central tube 5, sealing ring 2 connects for contacting with pipe and seals the annular space that central tube and load overlap.Described central tube 5 is arranged in load cover 4, the upper surface of described load cover 4 coordinates with the lower surface of top connection 1 is spacing, described sliding sleeve 6 is slidably disposed on load and overlaps 4 times intersegmental parts, described lower contact 7 is fixed on the lower end of sliding sleeve 6, is provided with multiple tracks lower seal 8 between described lower contact 7 and sliding sleeve 6.Described sliding sleeve 6 epimere is enclosed within the hypomere of central tube 5 slidably, described sliding sleeve 6 upper end inwall is provided with spacing preiection 61, central tube 5 lower end outer wall is provided with the positive stop lug boss 51 coordinated with spacing preiection 61, and spacing preiection 61 and positive stop lug boss 51 coordinate and can anti-anti-skid sheath 6, lower contact 7 be separated with central tube 5.It is outside that described spring 3 is enclosed within central tube 5, and the two ends of spring 3 are pushed up respectively and are arranged between load cover 4 and sliding sleeve 6, and wherein, the inwall that described load overlaps 4 upper ends is provided with step 41, and the upper end of described spring 3 withstands on step 41.Described load cover 4, sliding sleeve 6 are provided with 4 circulation ports, and 4 circulation ports are circumferentially uniformly distributed cloth, and circulation port is for being communicated with the annular space of tubing string inside and tubing string and oil pipe.
The application operating process of the utility model in certain inclined shaft radial jet operation is: weight control device on drilling bit seating nipple is connected to radial jet and windows in outer tubing string oil pipe lower going-into-well by (1); (2) ground composition matching weight control device on drilling bit and connect coiled tubing, with coiled tubing, weight control device on drilling bit is sent to weight control device on drilling bit seating nipple limited step position; (3) press down coiled tubing, load cover is withstood motionless by seating nipple, the downward Compress Spring of central tube, by the drill bit of load transfer to tool string below; (4), after the pressure of the drill applying action completes, open pump and carry out windowing task.
Set forth a lot of detail in description above so that fully understand the utility model, but the utility model can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model illustrates above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present utility model, otherwise all should be included in protection domain of the present utility model.
Claims (6)
1. a radial jet weight control device on drilling bit, it is characterized in that: comprise top connection (1), spring (3), load cover (4), central tube (5), sliding sleeve (6), lower contact (7), described top connection (1) is fixedly connected on the upper end of central tube (5), described central tube (5) is arranged in load cover (4), the upper surface of described load cover (4) coordinates with the lower surface of top connection (1) is spacing, described sliding sleeve (6) is slidably disposed on intersegmental part under load cover (4), described lower contact (7) is fixed on the lower end of sliding sleeve (6), it is outside that described spring (3) is enclosed within central tube (5), and the two ends of spring (3) are pushed up respectively and are arranged between load cover (4) and sliding sleeve (6).
2. radial jet weight control device on drilling bit according to claim 1, it is characterized in that: described sliding sleeve (6) epimere is enclosed within the hypomere of central tube (5) slidably, described sliding sleeve (6) upper end inwall is provided with spacing preiection (61), and central tube (5) lower end outer wall is provided with the positive stop lug boss (51) coordinated with spacing preiection (61).
3. radial jet weight control device on drilling bit according to claim 1, is characterized in that: the inwall of described load cover (4) upper end is provided with step (41), and the upper end of described spring (3) withstands on step (41).
4. radial jet weight control device on drilling bit according to claim 1, is characterized in that: (6) are provided with circulation port for described load cover (4), sliding sleeve.
5. radial jet weight control device on drilling bit according to any one of claim 1 to 4, is characterized in that: be provided with sealing ring (2) between described top connection (1) and central tube (5).
6. radial jet weight control device on drilling bit according to any one of claim 1 to 4, is characterized in that: be provided with lower seal (8) between described lower contact (7) and sliding sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501153.4U CN204729043U (en) | 2015-07-10 | 2015-07-10 | Radial jet weight control device on drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520501153.4U CN204729043U (en) | 2015-07-10 | 2015-07-10 | Radial jet weight control device on drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729043U true CN204729043U (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520501153.4U Active CN204729043U (en) | 2015-07-10 | 2015-07-10 | Radial jet weight control device on drilling bit |
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| Country | Link |
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| CN (1) | CN204729043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948130A (en) * | 2015-07-10 | 2015-09-30 | 中国海洋石油总公司 | Radial jet bit pressure controller and bit pressure controlling method |
-
2015
- 2015-07-10 CN CN201520501153.4U patent/CN204729043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948130A (en) * | 2015-07-10 | 2015-09-30 | 中国海洋石油总公司 | Radial jet bit pressure controller and bit pressure controlling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited Zhanjiang Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 China oil tower, 25 Chaoyangmen North Street, Dongcheng District, Beijing Co-patentee before: CNOOC (China) Limited Zhanjiang Branch Patentee before: China National Offshore Oil Corporation |