CN102220847A - Vortex cleaning drill pipe - Google Patents
Vortex cleaning drill pipe Download PDFInfo
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- CN102220847A CN102220847A CN2011101610383A CN201110161038A CN102220847A CN 102220847 A CN102220847 A CN 102220847A CN 2011101610383 A CN2011101610383 A CN 2011101610383A CN 201110161038 A CN201110161038 A CN 201110161038A CN 102220847 A CN102220847 A CN 102220847A
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- drilling rod
- vortex
- annular space
- generator
- drill pipe
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Abstract
The invention relates to a vortex cleaning drill pipe. The drill pipe comprises a drill pipe body (1), wherein a vortex generator (2) is arranged on the surface of the drill pipe body and can generate lots of vortexes with different sizes, quantities and ranges in an annular space around the drill pipe, so that the cuttings in annular space, which are deposited at the low side of a borehole, are taken to the center of the annular space and finally taken away by gas in the annular space. Therefore, the possibility of formation of a cuttings bed on the horizontal segment of a horizontal well is effectively reduced.
Description
Technical field
The present invention is a kind of vortex cleaning drilling rod, what particularly a kind of vortex that utilizes vortex generator to produce was improved the standard well annular space gas takes rock efficient, and it has crucial on-the-spot guidance meaning to the cutting bed problem that solves horizontal well horizontal segment annular space and may occur.
Background technology
Cutting bed is the endemism of horizontal well, promptly in eccentric annular space, because air velocity is less enough big with the landwaste particle diameter in the little annular space, causes borehole wall direction formation cutting bed under horizontal segment.Yet the existence of cutting bed easily causes the generation of down-hole accident, and then has a strong impact on the normal operation of drilling well.Vortex cleans drilling rod and mainly relies on its special geometry to control the change of annular spatial flow field, in the hope of can reaching the purpose of the bed that brings bottoms up, thereby reduces the occurrence probability of cutting bed.
Utilize the vortex cleaning drilling rod of invention can in annular space, produce the vortex big or small, that scope is different, it can bring to the landwaste that is trapped in the borehole wall base annular space center, so that taken out of well head, finally reach the purpose of the bed that helps bringing bottoms up by annular space gas.
At present, the drilling tool of the bed that brings bottoms up substantially all is from common jackrod structure, and then improves its structural parameters, as going out methods such as several V-shaped grooves in the drilling rod Surface Machining, and (the being mud) drilling environment that only is suitable for drilling fluid.
Summary of the invention
The objective of the invention is to the problem that exists at prior art, a kind of vortex cleaning drilling rod that utilizes vortex characteristic to improve to bring bottoms up an efficient is provided.
In order to achieve the above object, design of the present invention is: the present invention is the characteristics according to gas drilling, adds a kind of vortex generator that is similar to blade on common drilling rod surface, and simple in structure, thereby has constituted the body of vortex cleaning drilling rod.Utilize vortex generator annular space around drilling rod to produce the vortex big or small, that quantity is different with scope, it can change the migration path that is deposited on borehole wall base landwaste, and it is brought back to the annular space central area, so that landwaste is taken out of horizontal segment by gas, thus reach bring bottoms up the bed purpose.
According to above-mentioned design, the present invention adopts following technical scheme:
A kind of vortex cleaning drilling rod, comprise drilling rod body (1), the drilling rod body surface has vortex generator (2), this eddy generator can improve the annular space gas tangential speed, the landwaste that generation will be trapped in the low limit of well brings to the vortex at annular space center, helps purge gas drilling well horizontal segment cutting bed thereby reach.
Above-mentioned vortex generator (2) is the stick in drilling rod body surface projection, the height of this stick
Scope is 1 ~ 19mm, length
Scope is at 20cm ~ 50cm, with the corresponding central angle of drilling rod surface contact position width
At 10 ~ 60 °, the central angle of end face width correspondence is at 10 ~ 82 °, and length direction and drilling rod surface seamlessly transit.
Above-mentioned vortex generator is a foliaceous.
Above-mentioned vortex generator is 1～6 in the quantity on drilling rod body (1) surface.
The material of above-mentioned drilling rod body (1) is identical with the drilling rod of conventional drilling.
The present invention compares with general common drilling rod, have following conspicuous outstanding substantive distinguishing features and remarkable advantage: the present invention utilizes vortex generator can produce the characteristic of vortex, helps taking the purpose that rock efficient improves so that control annular space gas flowfield reaches.Result of calculation shows that the present invention can improve annular space gas flow characteristic effectively, strengthens the large rock-carrying ability of annular space gas, reduces the occurrence probability of cutting bed.
Description of drawings
Fig. 1 is the structure chart that has the vortex cleaning drilling rod of single vortex generator;
Fig. 2 is the structural representation of vortex generator;
Fig. 3 is the sectional view at A among Fig. 2-A place;
Fig. 4 is the vortex figure that common drilling rod produces;
Fig. 5 is the vortex figure that vortex cleaning drilling rod produces in the annular space arbitrary cross-section;
Fig. 6 is the vortex cleaning jackrod structure figure that has one group of symmetry vortex generator;
Fig. 7 is the vortex cleaning drilling rod annular space structure chart that has one group of symmetry vortex generator;
Fig. 8 is the vortex figure that has the vortex cleaning drilling rod annular space of one group of symmetry vortex generator;
Fig. 9 is the vortex cleaning jackrod structure figure that has two groups of symmetry vortex generators;
Figure 10 is the vortex cleaning drilling rod annular space motion pattern that has two groups of symmetry vortex generators.
The specific embodiment
Embodiment one: referring to Fig. 6, this vortex cleaning drilling rod is that drilling rod body (1) has one group of symmetry vortex generator 2, and referring to Fig. 2 and Fig. 3, vortex generator 2 is the stick at drilling rod body (1) rat, the height of this stick
Scope is 1 ~ 19mm, length
Scope is at 20cm ~ 50cm, with the corresponding central angle of drilling rod surface contact position width
At 10 ~ 60 °, the central angle of end face width correspondence is at 10 ~ 82 °, and length direction and drilling rod surface seamlessly transit.Its corresponding annular space annular space structure is seen Fig. 7, and corresponding flow field vortex figure sees Fig. 8.
Embodiment two: referring to Fig. 9, this vortex cleaning drilling rod is that drilling rod body (1) has two groups of symmetry vortex generators (2), and vortex generator (2) is a foliaceous, and two drilling rods connect with tool joint (3) up and down.Its corresponding annular space gas motion pattern is seen Figure 10.
Principle is as follows:
The present invention utilizes vortex generator not only can produce vortex, and has improved the tangential velocity of annular space gas effectively, so vortex cleaning drilling rod can improve the net horizontal section annular space effectively and take the rock effect, reduces the possibility that cutting bed forms.Fig. 2 has provided the concrete structure of vortex generator.Fig. 1 is the vortex cleaning jackrod structure figure that has single vortex generator.Fig. 5 is near the vortex figure in the section single vortex generator.As can see from Figure 5, owing to used vortex cleaning drilling rod, at drilling rod near surface and annular space center vortex has appearred all.This is because vortex generator is direct and the air-flow effect, has changed annular space gas flow structure, and the tangential velocity of gas is obviously increased.Fig. 6 and Fig. 9 are the vortex cleaning drilling rods with one group and two groups vortex generator.
Claims (5)
1. a vortex cleans drilling rod, comprise drilling rod body (1), it is characterized in that there is vortex generator (2) on drilling rod body (1) surface, this eddy generator (2) can improve the annular space gas tangential speed, the landwaste that generation will be trapped in the low limit of well brings to the vortex at annular space center, helps purge gas drilling well horizontal segment cutting bed thereby reach.
2. vortex cleaning drilling rod according to claim 1 is characterized in that described vortex generator (2) is the stick at drilling rod body (1) rat, the height of this stick
Scope is 1 ~ 19mm, length
Scope is at 20cm ~ 50cm, with the corresponding central angle of drilling rod surface contact position width
At 10 ~ 60 °, the central angle of end face width correspondence is at 10 ~ 82 °, and length direction and drilling rod surface seamlessly transit.
3. vortex cleaning drilling rod according to claim 1 is characterized in that described vortex generator (2) is foliaceous.
4. vortex cleaning drilling rod according to claim 1 is characterized in that described vortex generator (2) is 1～6 in the quantity on drilling rod body (1) surface.
5. vortex cleaning drilling rod according to claim 1 is characterized in that described drilling rod body (1) material is identical with the drilling rod of conventional drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101610383A CN102220847A (en) | 2011-06-16 | 2011-06-16 | Vortex cleaning drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101610383A CN102220847A (en) | 2011-06-16 | 2011-06-16 | Vortex cleaning drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102220847A true CN102220847A (en) | 2011-10-19 |
Family
ID=44777530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101610383A Pending CN102220847A (en) | 2011-06-16 | 2011-06-16 | Vortex cleaning drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102220847A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2221514A1 (en) * | 1997-11-19 | 1999-05-19 | Rg Industries Ltd. | Method of preventing scrapers on a reciprocating sucker rod from wearing grooves in well tubing, and a scraper |
| CN2555376Y (en) * | 2002-03-14 | 2003-06-11 | 胜利石油管理局钻井工艺研究院 | Hydraulic bed breading and friction reducing centering short segment |
| CN2685542Y (en) * | 2004-03-03 | 2005-03-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling column type talus bed removing tool |
| CN1644870A (en) * | 2005-02-01 | 2005-07-27 | 西南石油学院 | Stabilizer of gas drill horizontal well |
| GB2429723A (en) * | 2005-09-06 | 2007-03-07 | Hamdeen Inc Ltd | Impeller for cleaning wellbores |
| CN201087704Y (en) * | 2007-10-12 | 2008-07-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling tool stabilizer for gas drilling |
| GB2473094A (en) * | 2009-08-28 | 2011-03-02 | Arrival Oil Tools Inc | Drilling Cuttings mobiliser |
-
2011
- 2011-06-16 CN CN2011101610383A patent/CN102220847A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2221514A1 (en) * | 1997-11-19 | 1999-05-19 | Rg Industries Ltd. | Method of preventing scrapers on a reciprocating sucker rod from wearing grooves in well tubing, and a scraper |
| CN2555376Y (en) * | 2002-03-14 | 2003-06-11 | 胜利石油管理局钻井工艺研究院 | Hydraulic bed breading and friction reducing centering short segment |
| CN2685542Y (en) * | 2004-03-03 | 2005-03-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling column type talus bed removing tool |
| CN1644870A (en) * | 2005-02-01 | 2005-07-27 | 西南石油学院 | Stabilizer of gas drill horizontal well |
| GB2429723A (en) * | 2005-09-06 | 2007-03-07 | Hamdeen Inc Ltd | Impeller for cleaning wellbores |
| CN201087704Y (en) * | 2007-10-12 | 2008-07-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drilling tool stabilizer for gas drilling |
| GB2473094A (en) * | 2009-08-28 | 2011-03-02 | Arrival Oil Tools Inc | Drilling Cuttings mobiliser |
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Application publication date: 20111019 |