CN1644870A - Stabilizer of gas drill horizontal well - Google Patents
Stabilizer of gas drill horizontal well Download PDFInfo
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- CN1644870A CN1644870A CN 200510020302 CN200510020302A CN1644870A CN 1644870 A CN1644870 A CN 1644870A CN 200510020302 CN200510020302 CN 200510020302 CN 200510020302 A CN200510020302 A CN 200510020302A CN 1644870 A CN1644870 A CN 1644870A
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- China
- Prior art keywords
- landwaste
- guiding gutter
- centralizer
- horizontal well
- righting strip
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Abstract
A centralizer of drilling rod for the pneumatic drilling of horizontal well is composed of a main body, the spiral flow guide slots with wide inlet and narrow outlet, and spiral centralizing strips with rock bit leading-in slots. The hard alloy teeth are inlaid on the surfaces of said spiral flow guide slots and spiral centralizing strips.
Description
Technical field
The present invention relates to a kind of specific drilling tool centralizer when utilizing gas for the circulatory mediator horizontal well drilling.This centralizer adapts to the situation of fluid for the circulatory mediator horizontal well drilling of utilizing too.
Technical background
At high angle hole, in the creeping into of complex structural wells such as horizontal well, extended reach well, Multilateral Wells, because well section wide-angle tilt even level, thereby cause landwaste migration difficulty, the phenomenon of landwaste at borehole wall delay down, gathering, one-tenth bed appears, finally cause the drill string bit freezing, even creep into and to continue.
Cause the main cause of landwaste migration difficulty to have: 1, to cause eccentric annulus, eccentric annulus to cause down the low flow velocity district at borehole wall place on the borehole wall owing to action of gravity lies in down drill string.2, the larger particles landwaste that produces after the drill bit fragmentation both had been difficult for being migrated, again can't be broken once more, and at first be trapped in down on the borehole wall, and then become the obstacle that hinders other landwaste migration.3, the landwaste edge is subjected to how much obstructions of diameter increase section protrusion shoulder on the drilling tool when borehole wall is migrated down, stops to migrate, and becomes the delay landwaste.4, landwaste lacks the power that quickens, quickens other cutting grain motion of back impact once more in migration process.
Summary of the invention
The drilling tool centralizer that the object of the present invention is to provide a kind of gas horizontal well drilling to use, this centralizer is based on fluid numerical simulation technology, drill string kinematics, dynamic analysis technology, sparse phase gas-solid (liquid-solid) rolling particles motion analysis, the centralizer of a kind of special shape of optimization, it helps the large rock-carrying ability of fortified water horizontal well, has the drill string motion stabilization simultaneously, removes the characteristics that frictional resistance is little, rotation torque is little.
The drilling tool centralizer that a kind of gas horizontal well drilling is used, mainly form by centralizer body, guiding gutter, righting strip etc., it is characterized in that, described guiding gutter is a helical form, have wide portion runner and narrow outlet flow, the helical form righting strip of folded projection between the guiding gutter, its helical angle is 18 °～25 °, the landwaste lead-in groove is arranged on the described righting strip, wide portion runner and narrow outlet flow direction width that landwaste lead-in groove correspondence guiding gutter diminish gradually, and described landwaste lead-in groove surface and righting strip surface stud with hard-metal insert.
Guiding gutter is a helical form on the centralizer of the present invention, have wide portion runner and narrow outlet flow, it impels gas, cutting grain to quicken once more and produces helical form and flows, the high speed landwaste has had and has collided the power that other static landwaste makes its motion, the high-speed screw air-flow makes down the landwaste motion of borehole wall precipitation simultaneously, enters borehole wall band high velocity air district.Spiral helicine entrance shape is to optimize through the fluid numerical simulation technology, can guarantee that the cutting grain that any direction, angle arrive enters guiding gutter all unobstructedly, can not pause herein, be detained.
The helical form righting strip of folded projection between the guiding gutter, have special shape and spiral angle, helical angle is 18 °～25 °, it has stable drillstring vibrations, reduce moment of torsion, the effect of the frictional resistance that reduces to make a trip, the ability that also has the repetition fragmentation simultaneously, the bulky grain landwaste can be embedded, is broken into littler size landwaste, be convenient to discharge smoothly in follow-up well section.Design has the landwaste lead-in groove on the described righting strip, and the width of landwaste lead-in groove diminishes gradually, and landwaste lead-in groove surface and righting strip surface stud with hard-metal insert, function with wear-resisting and broken landwaste, the bulky grain landwaste enters guiding gutter, is embedded into, and then the righting strip fragmentation that is rotated.
Compared with prior art, folded protruding righting strip between guiding gutter, the guiding gutter on the centralizer of the present invention, all have special shape and spiral angle, landwaste lead-in groove on the righting strip from the runner import to runner exit, width diminishes gradually, landwaste lead-in groove surface and righting strip surface stud with hard-metal insert, these designs have with drill string lifting, the effect set upright centralizer, reduce even eliminate the low regime flow field of eccentric annulus, make drill string and well concentric, annular velocity is even with one heart, has eliminated low regime.It also helps the large rock-carrying ability of fortified water horizontal well, simultaneously the drill string motion stabilization, remove that frictional resistance is little, rotation torque is little.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 does not use eccentric annulus contoured velocity of the present invention to distribute
Fig. 3 is to use the low regime flow field of eliminating eccentric annulus behind the present invention
Fig. 4 is the guiding gutter inlet of traditional centralizer
Fig. 5 is the guiding gutter inlet of centralizer of the present invention
Fig. 6 is the acceleration and the turning effort of guiding gutter variable cross-section helical flow path of the present invention
The specific embodiment
Referring to Fig. 1, the drilling tool centralizer that a kind of gas horizontal well drilling is used, mainly form by centralizer body 1, guiding gutter 7, righting strip 2 etc., it is characterized in that, described guiding gutter 7 is a helical form, have wide portion runner 5 and narrow outlet flow 6, the helical form righting strip 2 of folded projection between the guiding gutter, its helical angle is 18 °～25 °, landwaste lead-in groove 3 is arranged on the described righting strip, wide portion runner and narrow outlet flow direction width that landwaste lead-in groove correspondence guiding gutter diminish gradually, and described landwaste lead-in groove 3 surfaces and righting strip 2 surfaces stud with hard-metal insert 4.
Referring to Fig. 2, Fig. 3, centralizer has drill string lifting, the effect set upright, reduce even eliminate the low regime flow field of eccentric annulus, Fig. 2 does not use centralizer of the present invention, makes the annular space bottom low regime occur, make talus deposit, after using this centralizer, see shown in Figure 3ly, drill string is concentric with well, annular velocity is even with one heart, has eliminated low regime.
Referring to Fig. 4, Fig. 5, Fig. 4 is the guiding gutter inlet of traditional centralizer, landwaste does not obtain abundant fragmentation, Fig. 5 is a centralizer guiding gutter inlet of the present invention, its shape is optimized through the fluid numerical simulation technology, can guarantee that the cutting grain that any direction, angle arrive enters guiding gutter all unobstructedly, can not pause herein, be detained.
Referring to Fig. 6, it is drilling tool centralizer computational fluid dynamics numerical simulation result of the present invention, the fluid speed straight line flows into centralizer guiding gutter inlet, acceleration by variable cross-section helical flow path on the centralizer, and with the high-speed screw outflow, the landwaste that flush water horizontal well diapire is detained has enough energy that landwaste is migrated, and on next centralizer, repeat to be broken for the landwaste of fine particle, make landwaste be taken out of ground smoothly.
When horizontal well drilling, the riding position of the present invention's centralizer and number are united definite by drill string mechanics analysis and TRAJECTORY CONTROL.Cooperate the present invention to use, will keep drill string to slowly run during horizontal well drilling, simultaneously controlled drilling rate.To note the centralizer direction during use, import and export the correct cooperation of direction.
Claims (1)
1 one kinds of drilling tool centralizers that the gas horizontal well drilling is used, mainly by centralizer body (1), guiding gutter (7), righting strip compositions such as (2), it is characterized in that, described guiding gutter (7) is a helical form, have wide portion runner (5) and narrow outlet flow (6), the helical form righting strip (2) of folded projection between the guiding gutter, its helical angle is 18 °～25 °, landwaste lead-in groove (3) is arranged on the described righting strip, wide portion runner and narrow outlet flow direction width that landwaste lead-in groove correspondence guiding gutter diminish gradually, and described landwaste lead-in groove (3) surface and righting strip (2) surface stud with hard-metal insert (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100203026A CN1318726C (en) | 2005-02-01 | 2005-02-01 | Stabilizer of gas drill horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100203026A CN1318726C (en) | 2005-02-01 | 2005-02-01 | Stabilizer of gas drill horizontal well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644870A true CN1644870A (en) | 2005-07-27 |
| CN1318726C CN1318726C (en) | 2007-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100203026A Expired - Fee Related CN1318726C (en) | 2005-02-01 | 2005-02-01 | Stabilizer of gas drill horizontal well |
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| Country | Link |
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| CN (1) | CN1318726C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003151A (en) * | 2010-10-09 | 2011-04-06 | 西南石油大学 | Special stabilizer for gas drilling |
| CN102220847A (en) * | 2011-06-16 | 2011-10-19 | 上海大学 | Vortex cleaning drill pipe |
| CN102296938A (en) * | 2011-08-25 | 2011-12-28 | 成都科盛石油科技有限公司 | Coring tool with round slots on knife back |
| CN102418477A (en) * | 2011-12-05 | 2012-04-18 | 山东新矿赵官能源有限责任公司 | Drill rod linear driller for mine gas drainage under suction and operation method of drill rod linear driller |
| CN103132925A (en) * | 2013-03-21 | 2013-06-05 | 西南石油大学 | Downhole motive driller capable of improving drill column stretching capacity |
| CN103696707A (en) * | 2014-01-11 | 2014-04-02 | 吉林大学 | Stacked-disk stabilizer |
| CN103775010A (en) * | 2014-01-22 | 2014-05-07 | 西南石油大学 | Borehole cleaning tool for horizontal-section gas drilling |
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275935A (en) * | 1979-07-17 | 1981-06-30 | American Coldset Corp. | Drilling stabilizer |
| CN2192715Y (en) * | 1994-04-25 | 1995-03-22 | 潍坊矿山机械厂 | Righting apparatus |
| CN2573648Y (en) * | 2002-09-24 | 2003-09-17 | 张希智 | Improved drilling tool centering device |
-
2005
- 2005-02-01 CN CNB2005100203026A patent/CN1318726C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003151A (en) * | 2010-10-09 | 2011-04-06 | 西南石油大学 | Special stabilizer for gas drilling |
| CN102220847A (en) * | 2011-06-16 | 2011-10-19 | 上海大学 | Vortex cleaning drill pipe |
| CN102296938A (en) * | 2011-08-25 | 2011-12-28 | 成都科盛石油科技有限公司 | Coring tool with round slots on knife back |
| CN102418477A (en) * | 2011-12-05 | 2012-04-18 | 山东新矿赵官能源有限责任公司 | Drill rod linear driller for mine gas drainage under suction and operation method of drill rod linear driller |
| CN103132925A (en) * | 2013-03-21 | 2013-06-05 | 西南石油大学 | Downhole motive driller capable of improving drill column stretching capacity |
| CN103696707A (en) * | 2014-01-11 | 2014-04-02 | 吉林大学 | Stacked-disk stabilizer |
| CN103696707B (en) * | 2014-01-11 | 2015-06-03 | 吉林大学 | Stacked-disk stabilizer |
| CN103775010A (en) * | 2014-01-22 | 2014-05-07 | 西南石油大学 | Borehole cleaning tool for horizontal-section gas drilling |
| CN103775010B (en) * | 2014-01-22 | 2016-03-23 | 西南石油大学 | A kind of horizontal segment gas drilling hole cleaning instrument |
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1318726C (en) | 2007-05-30 |
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20130201 |