CN204299469U - A kind of the stepped of necking down stratum that be applied to repaiies hole instrument - Google Patents
A kind of the stepped of necking down stratum that be applied to repaiies hole instrument Download PDFInfo
- Publication number
- CN204299469U CN204299469U CN201420649528.7U CN201420649528U CN204299469U CN 204299469 U CN204299469 U CN 204299469U CN 201420649528 U CN201420649528 U CN 201420649528U CN 204299469 U CN204299469 U CN 204299469U
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- CN
- China
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- designed
- necking down
- drilling
- tool body
- chamfered transition
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of drilling and repairing well instrument, and particularly a kind of the stepped of necking down stratum that be applied to repaiies hole instrument.The tool body of this device is designed with junction button and lower junction button up and down respectively, gauge righting district is designed with in the middle part of tool body, the secondary that two ends, gauge righting district are all designed with chamfered transition shape cuts band, secondary cuts the one-level conditioning belt that band outside is designed with chamfered transition shape, the one-level being designed with chamfered transition shape outside one-level conditioning belt cuts band, and tool body is axially processed with runner.The utility model achieves can be repaired the well section of boring stratum and easily occur necking down in real time, maintains the unobstructed state of top well section, can carrying out expansion reaming, without the need to changing BHA, realizing a drilling tool several functions to occurring necking down well section.Overcome the plastic formation boring in existing drilling process and meet easy necking down, adopt frequent drilling to carry out the measure of drifting, drilling period is long, the deficiency that cost is high.
Description
Technical field:
The utility model relates to a kind of drilling and repairing well instrument, and particularly a kind of the stepped of necking down stratum that be applied to repaiies hole instrument.
Background technology:
At straight well, directional well, horizontal well, in the drilling process such as extended reach well, because drilling footage is longer, drilling strata is changeable, the plastic formation of easy necking down met by frequent brill, the drilling process duration is long, the chip hold down of drilling fluid can not good equilibrium strata pressure, under strata pressure effect, plastic formation is very easily wriggled, borehole diameter is caused to diminish, the measure of having to adopt frequent drilling to carry out drifting is repaired the stratum that deformation occurs, extend drilling period, the well section that stratum is wriggled serious very easily causes drill bit can not carry, under the serious conditions that do not enter, cause bit freezing, sidetracking, the complex situations such as well filling, add the drilling well comprehensive method of investment.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of the stepped of necking down stratum that be applied to and repaiies hole instrument, the arrangement achieves and can repair the well section of boring stratum and easily occur necking down in real time, maintain the unobstructed state of top well section, expansion reaming can be carried out to occurring necking down well section, without the need to changing BHA, realize a drilling tool several functions.Overcome the plastic formation boring in existing drilling process and meet easy necking down, adopt frequent drilling to carry out the measure of drifting, drilling period is long, the deficiency that cost is high.
Technical solution adopted in the utility model is: a kind of the stepped of necking down stratum that be applied to repaiies hole instrument, comprises tool body; Tool body is designed with junction button and lower junction button up and down respectively, gauge righting district is designed with in the middle part of tool body, the secondary that two ends, gauge righting district are all designed with chamfered transition shape cuts band, secondary cuts the one-level conditioning belt that band outside is designed with chamfered transition shape, the one-level being designed with chamfered transition shape outside one-level conditioning belt cuts band, and tool body is axially processed with runner.
The beneficial effects of the utility model are: the utility model is owing to have employed chamfered transition shape variable diameter design and the mode being designed with burring machine, thus having can in real time to the function of boring necking down easily occurs on stratum well section and repairing, maintain the unobstructed state of top well section, expansion reaming can be carried out to occurring necking down well section, without the need to changing BHA, realize a drilling tool several functions.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of the stepped of necking down stratum that be applied to repaiies hole instrument, comprises tool body; Tool body is designed with junction button 6 and lower junction button 1 up and down respectively, gauge righting district 5 is designed with in the middle part of tool body, the secondary that two ends, gauge righting district 5 are all designed with chamfered transition shape cuts band 4, secondary cuts the one-level conditioning belt 3 being designed with chamfered transition shape outside band 4, the one-level being designed with chamfered transition shape outside one-level conditioning belt 3 cuts band 2, tool body is axially processed with runner, can ensure drilling fluid normal circulation.
One-level is cut band 2 and is mainly carried out expansion reaming to more serious well necking down, one-level conditioning belt 3 is repaired for the well processed one-level cutting band 2, secondary cuts band 4 and carries out expansion reaming to trimmed well or well that serious necking down do not occur, makes well further close to normal well eye state; Well after expansion reaming is finally repaired by gauge righting district 5, reaches the state of normal well.Symmetric design is carried out respectively in the upper and lower two ends of this instrument, its objective is and will reach in the process of making a trip and can repair well, thus avoid replacing BHA, and realizing that a kind of BHA makes a trip all can the object of reaming.The functional part of this instrument is inlaid with antifriction alloy post respectively, can repairs necking down well to greatest extent, ensure that the service life of instrument simultaneously.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. be applied to the stepped of necking down stratum and repair a hole instrument, comprise tool body; It is characterized in that: tool body is designed with junction button (6) and lower junction button (1) up and down respectively, gauge righting district (5) is designed with in the middle part of tool body, the secondary that gauge righting district (5) two ends are all designed with chamfered transition shape cuts band (4), secondary cuts the one-level conditioning belt (3) that band (4) outside is designed with chamfered transition shape, the one-level that one-level conditioning belt (3) outside is designed with chamfered transition shape cuts band (2), and tool body is axially processed with runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649528.7U CN204299469U (en) | 2014-11-03 | 2014-11-03 | A kind of the stepped of necking down stratum that be applied to repaiies hole instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649528.7U CN204299469U (en) | 2014-11-03 | 2014-11-03 | A kind of the stepped of necking down stratum that be applied to repaiies hole instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299469U true CN204299469U (en) | 2015-04-29 |
Family
ID=53105015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420649528.7U Expired - Fee Related CN204299469U (en) | 2014-11-03 | 2014-11-03 | A kind of the stepped of necking down stratum that be applied to repaiies hole instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299469U (en) |
-
2014
- 2014-11-03 CN CN201420649528.7U patent/CN204299469U/en not_active Expired - Fee Related
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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: 20150429 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |