CN2589659Y - Drill string built-up construction having waterpower pressurizer - Google Patents
Drill string built-up construction having waterpower pressurizer Download PDFInfo
- Publication number
- CN2589659Y CN2589659Y CN 02245284 CN02245284U CN2589659Y CN 2589659 Y CN2589659 Y CN 2589659Y CN 02245284 CN02245284 CN 02245284 CN 02245284 U CN02245284 U CN 02245284U CN 2589659 Y CN2589659 Y CN 2589659Y
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- CN
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- Prior art keywords
- drill
- drill string
- hydraulic thruster
- drilling
- pressurizer
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Abstract
The utility model relates to a drill string composite structure with a hydraulic pressurizer, which belongs to the drill assembly for the well drilling of gas fields, and is composed of a drill rod (1), a drill collar (2), the hydraulic pressurizer (3) and a drill head (5). The utility model is characterized in that the drill collar (4) is arranged between the drill head (5) and the hydraulic pressurizer (3), which can reduce the vibration of drill string at the upper part of the hydraulic pressurizer, can provide impact energy when wells are drilled on hard formation, and is favorable for breaking rock, reducing the failure of drilling tools and improving the efficiency of well drilling. The utility model is suitable for the well drilling operations on gas fields.
Description
Technical field:
The utility model relates to the drill string assembly structure in the oil and gas well drilling.
Background technology:
In oil and gas well drilling, normally drive drill bit rotation fractured rock by drill string in the well.Drill string mainly is made up of drilling rod and drill collar in the well.In drilling process, drill string produces vibration in the well owing to the influence of the excitation of shaft bottom and drill bit interphase interaction and other vibration source makes, and the vibration effect drilling direction and the drill tool life of drill string reduce drilling efficiency, increase drilling cost.In order to reduce drillstring vibrations, normally the shock absorber that rigidity of series connection is lower in drill string is to absorb the energy of drillstring vibrations.Though shock absorber can reduce drillstring vibrations, improve the application life of drill bit, its intensity is lower, life-span is short, and the use of shock absorber, the matching problem of ubiquity drill bit amplitude, frequency and shock absorber component rigidity and drill collar stiffness is mated the bad damping effect that just do not have.Therefore, we have proposed the employing hydraulic thruster and have replaced shock absorber in 00244794.0 patent.Hydraulic thruster is damping both, can be used for applying the pressure of the drill again, also can reduce the drill collar bending, helps preventing tiltedly, beats straight.In the conventional drilling operation, the combination of hydraulic thruster and drill string from top to bottom is the combining structure that adopts drilling rod, drill collar, hydraulic thruster, drill bit successively at present.The advantage of this compound mode is: owing to drill string and the drill bit of hydraulic thruster with its top separates, the vibration that drill bit and shaft bottom effect are produced can not be passed to upper drilling string, thereby reduced the above drillstring vibrations of hydraulic thruster effectively, but its shortcoming is, can not provide impact energy effectively when boring the hard formation well.
Summary of the invention:
The purpose of this utility model is: propose a kind of can vibration damping, the drill string assembly structure of the band hydraulic thruster of impact energy can be provided to the hard formation drilling well time again.
For achieving the above object, the utility model is by the following technical solutions: drill string is made up of drilling rod (1), drill collar (2), hydraulic thruster (3), drill bit (5) from top to bottom, drilling rod (1) links with drill collar (2), drill collar (2) lower end connects with hydraulic thruster (3) top, it is characterized in that, added drill collar (4) between hydraulic thruster (3) and drill bit (5), drill collar (4) top connects hydraulic thruster (3), and the bottom connects with drill bit (5).The length of drill collar (4) is determined by the calculated with mathematical model that the vibration analysis to drilling assembly is set up.
Advantage of the present utility model is, both keep hydraulic thruster and reduced the advantage that upper drilling string is vibrated, again owing between drill bit and hydraulic thruster, added drill collar (4), so impact energy can be provided to the hard formation drilling well time, help fractured rock, reduce drilling tool failure, improve drilling efficiency.
Description of drawings:
Fig. 1 is a schematic diagram of the present utility model.
The specific embodiment:
The drill string assembly structure from top to bottom, form by drilling rod (1), drill collar (2), hydraulic thruster (3), drill collar (4), drill bit (5), they are successively by thread connection, and the length of drill collar (4) is found the solution by the vibration equation that the Longitudinal vibration analysis of drill string is set up and to be got.Calculate according to theory, the critical length of drill collar (4) is relevant with the rotating speed of the number of stroke of borehole pump and rotating disk, and the number of stroke of borehole pump is big more, and the critical length of drill collar (4) is short more, and rotary speed is big more, and the critical length of drill collar (4) is also short more.
Claims (1)
1. drill string assembly structure with hydraulic thruster, form by drilling rod (1), drill collar (2), hydraulic thruster (3), drill bit (5), drilling rod (1) links with drill collar (2), drill collar (2) lower end connects with hydraulic thruster (3) top, it is characterized in that: between hydraulic thruster (3) and drill bit (5), added drill collar (4), drill collar (4) top connects hydraulic thruster (3), and the bottom connects with drill bit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245284 CN2589659Y (en) | 2002-12-20 | 2002-12-20 | Drill string built-up construction having waterpower pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245284 CN2589659Y (en) | 2002-12-20 | 2002-12-20 | Drill string built-up construction having waterpower pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2589659Y true CN2589659Y (en) | 2003-12-03 |
Family
ID=33716921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02245284 Expired - Fee Related CN2589659Y (en) | 2002-12-20 | 2002-12-20 | Drill string built-up construction having waterpower pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2589659Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287137A (en) * | 2011-09-15 | 2011-12-21 | 东北石油大学 | Self-excitation sympathetic vibration well drilling device and method |
| CN101324174B (en) * | 2008-08-05 | 2013-04-24 | 中国海洋石油总公司 | Method for preventing well drilling riser pipe and drill stem from generating resonance |
| CN104533314A (en) * | 2014-12-04 | 2015-04-22 | 刘岩 | Multi-effect lifting pressurizing device for drilling tool |
| CN107002466A (en) * | 2014-12-31 | 2017-08-01 | 哈里伯顿能源服务公司 | Drill string equipment, method and system with integrated annular barrier and ported sub |
| CN108798515A (en) * | 2017-05-04 | 2018-11-13 | 中国石油天然气股份有限公司 | A kind of directed drilling technique for mud stone section |
-
2002
- 2002-12-20 CN CN 02245284 patent/CN2589659Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101324174B (en) * | 2008-08-05 | 2013-04-24 | 中国海洋石油总公司 | Method for preventing well drilling riser pipe and drill stem from generating resonance |
| CN102287137A (en) * | 2011-09-15 | 2011-12-21 | 东北石油大学 | Self-excitation sympathetic vibration well drilling device and method |
| CN102287137B (en) * | 2011-09-15 | 2013-10-23 | 东北石油大学 | Self-excitation sympathetic vibration well drilling device and method thereof |
| CN104533314A (en) * | 2014-12-04 | 2015-04-22 | 刘岩 | Multi-effect lifting pressurizing device for drilling tool |
| CN107002466A (en) * | 2014-12-31 | 2017-08-01 | 哈里伯顿能源服务公司 | Drill string equipment, method and system with integrated annular barrier and ported sub |
| US10145204B2 (en) | 2014-12-31 | 2018-12-04 | Halliburton Energy Services, Inc. | Drill string apparatus with integrated annular barrier and port collar, methods, and systems |
| US10787881B2 (en) | 2014-12-31 | 2020-09-29 | Halliburton Energy Services, Inc. | Drill string apparatus with integrated annular barrier and port collar, methods, and systems |
| CN108798515A (en) * | 2017-05-04 | 2018-11-13 | 中国石油天然气股份有限公司 | A kind of directed drilling technique for mud stone section |
| CN108798515B (en) * | 2017-05-04 | 2020-05-08 | 中国石油天然气股份有限公司 | Directional drilling process for mudstone section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |