CN201087704Y - Drilling tool stabilizer for gas drilling - Google Patents
Drilling tool stabilizer for gas drilling Download PDFInfo
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- CN201087704Y CN201087704Y CNU2007200287083U CN200720028708U CN201087704Y CN 201087704 Y CN201087704 Y CN 201087704Y CN U2007200287083 U CNU2007200287083 U CN U2007200287083U CN 200720028708 U CN200720028708 U CN 200720028708U CN 201087704 Y CN201087704 Y CN 201087704Y
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Abstract
The utility model relates to a drilling tool stabilizer used for gas well drilling to adjust the combined performance of a lower part drilling tool. The stabilizer consists of a stabilizer body, a leptospira, a spiral fluid directing slot and hard alloy teeth, wherein, the stabilizer body is of a tubular component, the two ends of the stabilizer body are respectively processed with a screw thread which is linked with a drilling tool, the leptospira is composed of helical bands, the spiral angle is 40 to 60 DEG, the longitudinal section is of an elliptical shape, the leptospira is in a spheroidicity, the spiral fluid directing slot is distributed among the helical bands, and the hard alloy teeth are inlaid on the surfaces of the helical bands according to the principia that the middle part is dense and the two ends are sparse. The stabilizer has simple structure, has the characteristics of improving quality of a well body and reducing vibration of the drilling tool, etc. and can lower the risk caused by complex underground accidents such as underground drilling meeting block, sand depositing and drilling tool jamming, etc. when in gas well drilling.
Description
Technical field
The utility model relates to a kind of improvement that is used for the gas drilling drilling tool stabilizer.
Background technology
This type of is used for the existing patent documentation of gas drilling drilling tool stabilizer and is disclosed in the prior art: Chinese patent manual ZL200510020302.6 (announcing in 2005 months 7 days 27) has described the drilling tool centralizer that a kind of gas horizontal well drilling is used, and this centralizer improves helical flow path.But for reducing gas drilling generation down-hole accident risk, this type of stabilizer is difficult to be applied in the straight well work progress.
Along with the further increasing of petroleum natural gas exploration dynamics, for improving exploration and development speed, protection reservoir, the gas drilling technology has at home and abroad obtained using widely.But in the gas drilling implementation process, the wellbore quality of how controlling well has become a problem demanding prompt solution.In with the drilling process of conventional drilling liquid, can adopt drilling tool stabilizer to adjust the bottomhole assembly performance, the control wellbore quality as circulatory mediator.During gas drilling, if adopt conventional drilling tool stabilizer, the gas drilling hole instability is prone to and bursts apart, caves in, and causes the sand setting bit freezing at the drilling tool stabilizer place; Easily be hampered in the process that makes a trip at borehole wall shoulder place; During stratum a small amount of water outlet, the mixture of landwaste and formation water easily is attached on the drilling tool stabilizer, forms mud drum, blocks annular space; Or the like.Therefore, in the gas drilling process, for guaranteeing downhole safety, usually do not add drilling tool stabilizer at present, this brings great difficulty just for the control of gas drilling wellbore quality.Simultaneously, in the gas drilling process, drill string vibration is violent, and the oscillation crosswise of drilling tool is difficult to control when not adding drilling tool stabilizer, causes the drilling tool fracture failure serious.
In order to realize under the gas drilling condition, regulate the bottomhole assembly performance, improve the hole trajectory control ability, reduce gas drilling because the drilling tool fracture failure that drill string vibration causes, begun one's study both at home and abroad and be used for the drilling tool stabilizer of gas drilling, but the inside and outside gas differential pressure of drilling rod is little when boring owing to gas, and drill string vibration is serious, if design is applicable to the displacement stabilizer of gas drilling, tapered stabilizer, shock absorbers etc. await further to study, present research work mainly concentrates on the contour structures of stabilizer, structure designs such as guiding gutter structure, and obtained the part achievement in research.
According to the utility model that above-mentioned technical background proposes, it is simple in structure, and applicability is strong.The purpose of this utility model is can regulate the lower drilling tool performance for the gas drilling hole trajectory control provides a kind of, can reduce the drilling tool stabilizer of down-hole equipment oscillation crosswise again.
Summary of the invention
This utility model comes from the gas drilling actual needs, and through drill string kinetics, hydrodynamics technical Analysis, optimize and be suitable for the gas drilling drilling tool stabilizer of (comprising pure gas drilling well, atomizing drilling well and foam drilling), this stabilizer can be regulated the performance of bottomhole assembly and improve the hole trajectory control ability, and can reduce the gas drilling drill string vibration.The utility model purpose is to provide a kind of drilling tool stabilizer that is used for gas drilling for the scene.
This stabilizer is made up of stabilizer body, conveyor screw, spiral stream guidance groove and hard-metal insert, it is characterized in that the stabilizer body is a tubular element, the lower end is processed with drilling tool thread connection pin thread, the upper end is processed with drilling tool thread connection box, and conveyor screw is made of main three hurricane bands, and its helical angle is 40 °～60 °, the longitudinal section is oval, conveyor screw is elliposoidal, and the spiral stream guidance groove is distributed between three hurricane bands, studs with hard-metal insert on the hurricane band surface by the sparse principle in intensive two ends, centre.
The stabilizer body is a tubular element, and the lower end is processed with drilling tool thread connection pin thread, and the upper end is processed with drilling tool thread connection box.According to hydrodynamic analysis, to form by three right-hand screw bands according to shaft bottom air velocity and the definite conveyor screw of rotation drilling tool stability, its helical angle is 40 °～60 °, length 400mm～800mm.The main feature of this stabilizer is spirochetal longitudinal section for oval, and promptly whole conveyor screw partly is elliposoidal, and adopt the major advantage of elliposoidal contour structures to be: A, elliposoidal contour structures can be reduced in sand setting bit freezing risk in the gas drilling process; B, stabilizer reduced the tight trip risk smoothly by the borehole wall shoulder place when elliposoidal contour structures helped making a trip; The two ends of C, elliposoidal contour structures have to contact with the borehole wall greatly, helps improving the air-flow at stabilizer place, reduces owing to stabilizer causes the large rock-carrying ability that air-flow changes influences gas.
For improving spirochetal abrasion resistance, carbide inserts tooth on hurricane band, its distribution principle is that middle intensive two ends are sparse, adopt this distribution principle mainly to be because the two ends and the borehole wall touch opportunity of elliposoidal contour structures are few, it is less to wear and tear, and the liptinite middle part contacts with the borehole wall for a long time, encrypts the carbide inserts tooth, to improve the abrasion resistance of stabilizer.
Spiral stream guidance groove cross section is sector shape, and its purpose mainly is to increase the annular space cross-sectional area, reduces the influence to gas flowfield.The size of guiding gutter sectional area can be regulated processing according to demands such as the used degree of depth of stabilizer, gas discharge capacities.Rotating speed when creeping into, air-flow upward velocity and hydrodynamics numerical simulation result according to rotating disk, the helical angle of determining hurricane band and spiral stream guidance groove is 40 °～60 °, it is little to air-flow on to return resistance during rotary drilling with this stabilizer under the helical angle condition, and it is little that air-flow is taken the rock influence.
Description of drawings:
Fig. 1 is used for the drilling tool stabilizer structural representation of gas drilling
1. stabilizer body
2. conveyor screw
3. spiral stream guidance groove
4. hard-metal insert
The specific embodiment
Now its invention is further described in conjunction with Fig. 1, the gas drilling drilling tool stabilizer that is used for described in the utility model is formed (as Fig. 1) by body 1, conveyor screw 2, spiral stream guidance groove 3 and hard-metal insert 4, stabilizer body 1 is a tubular element, two ends process pin thread, box respectively, with the drilling tool thread connection, conveyor screw 2 is made up of three hurricane bands, its helical angle is 40 °～60 °, the longitudinal section is oval, spiral stream guidance groove 3 is distributed between three hurricane bands, studs with hard-metal insert 4 on the hurricane band surface by the sparse principle in intensive two ends, centre.
These drilling tool stabilizer two ends have with conventional drilling tool and connect screw thread, convenient on-the-spot the installation and dismounting.
This drilling tool stabilizer is applicable to: in the gas drilling work progress, A, need are regulated the bottomhole assembly performance by stabilizer, with the control wellbore quality; B, need reduce drill string vibration by stabilizer; C, this stabilizer are applicable to existing cave-in in the gas drilling process, or the stratum goes out under the water condition on a small quantity.
Because this stabilizer adopts the elliposoidal structure of conveyor screw profile, when making a trip, the two ends arch section has good guiding function, can reduce to be hampered, the bit freezing equivalent risk; In the drilling process, the two ends arcuate structure also has good guide functions, when taking rock, gas not only can directly enter spiral stream guidance groove 3, and can enter the spiral stream guidance groove by arch section, reduced air communication and crossed the distance of spiral stream guidance groove, reduced formation water and landwaste mixture (when a small amount of water outlet in stratum) and be attached to the risk that forms mud drum in the spiral stream guidance groove 3; Making up a joint or during column, sand setting can enter spiral stream guidance groove 3 by the lower curved structure, and can sink rapidly by the lower end arcuate structure, reducing sand setting and be attached to the risk of stopping up spiral stream guidance groove 3 in the guiding gutter.
40 °～60 ° of the helical angles of this stabilizer hurricane band and spiral stream guidance groove 3, this is according to parameters such as conveyor screw length, air velocity, bottom pressure, rotary speeds, comes by the hydrodynamics numerical simulation of optimum.In the application process, can or select different helical angles for use or conveyor screw length according to these parameter designing equally.
This patent is simple in structure, and is easy to operate, can regulate the bottomhole assembly performance well in the gas drilling construction, improves the wellbore quality control ability, and can reduce the drilling tool oscillation crosswise.
Claims (1)
1. drilling tool stabilizer that is used for gas drilling, form by stabilizer body (1), conveyor screw (2), spiral stream guidance groove (3) and hard-metal insert (4), it is characterized in that stabilizer body (1) is a tubular element, the lower end is processed with drilling tool thread connection pin thread, the upper end is processed with drilling tool thread connection box, and conveyor screw (2) is made of main hurricane band, and its helical angle is 40 °～60 °, the longitudinal section is oval, and conveyor screw is elliposoidal; Spiral stream guidance groove (3) is distributed between the hurricane band, studs with hard-metal insert (4) on the hurricane band surface by the sparse principle in intensive two ends, centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200287083U CN201087704Y (en) | 2007-10-12 | 2007-10-12 | Drilling tool stabilizer for gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200287083U CN201087704Y (en) | 2007-10-12 | 2007-10-12 | Drilling tool stabilizer for gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201087704Y true CN201087704Y (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200287083U Expired - Fee Related CN201087704Y (en) | 2007-10-12 | 2007-10-12 | Drilling tool stabilizer for gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201087704Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220847A (en) * | 2011-06-16 | 2011-10-19 | 上海大学 | Vortex cleaning drill pipe |
| CN103306614A (en) * | 2013-06-27 | 2013-09-18 | 中国海洋石油总公司 | Open type spiral wing mud drum-preventing centralizer for well drilling |
| CN104929513A (en) * | 2014-03-21 | 2015-09-23 | 中国石油化工集团公司 | Microwave-assisted rock-breaking gas-drilling equipment and gas-drilling well wall freezing method |
| CN105178857A (en) * | 2015-09-23 | 2015-12-23 | 中国石油集团西部钻探工程有限公司 | Drilling tool stabilizer for 165mm unconventional directional well borehole |
| CN105332660A (en) * | 2014-08-13 | 2016-02-17 | 盐城市华谊石油机械有限公司 | Scraping and centralizing stabilizer |
| CN107965278A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN107965277A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN108035682A (en) * | 2017-12-19 | 2018-05-15 | 北京中煤矿山工程有限公司 | A kind of widened drill bit structure of advanced guide hole of shaft with large angle of inclination |
| CN108104720A (en) * | 2017-12-19 | 2018-06-01 | 北京中煤矿山工程有限公司 | The non-development blasting machine well drilling technology of hydroenergy storage station pressure pipeline inclined shaft |
| CN109555488A (en) * | 2019-01-15 | 2019-04-02 | 济源华新石油机械有限公司 | Spherical spiral wing stabilizer |
| CN112727388A (en) * | 2020-12-29 | 2021-04-30 | 中国石油大学(华东) | Plasma rock breaking efficient chip removal system |
-
2007
- 2007-10-12 CN CNU2007200287083U patent/CN201087704Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220847A (en) * | 2011-06-16 | 2011-10-19 | 上海大学 | Vortex cleaning drill pipe |
| CN103306614A (en) * | 2013-06-27 | 2013-09-18 | 中国海洋石油总公司 | Open type spiral wing mud drum-preventing centralizer for well drilling |
| CN103306614B (en) * | 2013-06-27 | 2016-02-17 | 中国海洋石油总公司 | The anti-mud drum centralizer of the drilling well open type spiral wing |
| CN104929513A (en) * | 2014-03-21 | 2015-09-23 | 中国石油化工集团公司 | Microwave-assisted rock-breaking gas-drilling equipment and gas-drilling well wall freezing method |
| CN105332660B (en) * | 2014-08-13 | 2019-02-05 | 盐城市华谊石油机械有限公司 | A kind of scraping righting stabilizer |
| CN105332660A (en) * | 2014-08-13 | 2016-02-17 | 盐城市华谊石油机械有限公司 | Scraping and centralizing stabilizer |
| CN105178857A (en) * | 2015-09-23 | 2015-12-23 | 中国石油集团西部钻探工程有限公司 | Drilling tool stabilizer for 165mm unconventional directional well borehole |
| CN107965278A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN107965277A (en) * | 2016-10-20 | 2018-04-27 | 中国石油化工股份有限公司 | A kind of drill assembly |
| CN107965278B (en) * | 2016-10-20 | 2020-07-03 | 中国石油化工股份有限公司 | Drilling tool combination |
| CN108035682A (en) * | 2017-12-19 | 2018-05-15 | 北京中煤矿山工程有限公司 | A kind of widened drill bit structure of advanced guide hole of shaft with large angle of inclination |
| CN108104720A (en) * | 2017-12-19 | 2018-06-01 | 北京中煤矿山工程有限公司 | The non-development blasting machine well drilling technology of hydroenergy storage station pressure pipeline inclined shaft |
| CN108104720B (en) * | 2017-12-19 | 2019-04-23 | 北京中煤矿山工程有限公司 | The non-development blasting machine well drilling technology of hydroenergy storage station pressure pipeline inclined shaft |
| CN109555488A (en) * | 2019-01-15 | 2019-04-02 | 济源华新石油机械有限公司 | Spherical spiral wing stabilizer |
| CN112727388A (en) * | 2020-12-29 | 2021-04-30 | 中国石油大学(华东) | Plasma rock breaking efficient chip removal system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20121012 |