CN106761505B - A kind of gaslift direct circulation drilling uses mixer - Google Patents
A kind of gaslift direct circulation drilling uses mixer Download PDFInfo
- Publication number
- CN106761505B CN106761505B CN201710048428.7A CN201710048428A CN106761505B CN 106761505 B CN106761505 B CN 106761505B CN 201710048428 A CN201710048428 A CN 201710048428A CN 106761505 B CN106761505 B CN 106761505B
- Authority
- CN
- China
- Prior art keywords
- bridge
- fitting body
- type
- floral tube
- gaslift
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
Abstract
The present invention relates to gaslift direct circulation drilling technology fields, in particular a kind of gaslift direct circulation drilling mixer, including floral tube, convex block and crossover sub outside fitting body, inner core, bridge-type, it is provided with inner core in the inner cavity of the fitting body, forms annular space between inner core and the inner wall of fitting body；The outer floral tube of bridge-type is enclosed on the lateral wall of the fitting body, one end of the outer floral tube of bridge-type is fixed with convex block, the outer floral tube outer surface of the bridge-type offers the bridge opening of middle part protrusion, being formed between the bridge opening and the outer floral tube of bridge-type can be with the bridge opening joint-cutting of two-way jet flow, the fitting body offers venthole by the side wall perforation that floral tube outside bridge-type wraps up, and the fitting body is machined with external screw thread one end and is socketed with crossover sub by being threadedly engaged.The present invention can effectively prevent high-speed flow from directly causing to impact to drilling well hole wall, and the outer floral tube of bridge-type can be dismounted easily very much, very convenient replacement, and structure is simple and effective.
Description
Technical field
The present invention relates to gaslift direct circulation drilling technology field, specially a kind of gaslift direct circulation drilling uses mixer.
Background technique
Gaslift direct circulation drilling process is a research contents of heavy caliber geothermal well special exploitation technical research project, should
Project mainly summarizes applicable cases of the gaslift direct circulation drilling process in heavy caliber underground heat well construction, and comparative analysis is routinely big
Bore geothermal well construction technology.
Gaslift direct circulation drilling efficiency is high, especially creeps into lost-circulation zone, normal circulation technology mud severe leakage, creeps into
It not can be carried out；Gas lift reverse circulation technique can also generate benefit slurry and not catch up with, cause in drilling in the insufficient situation of underground water supply
The problems such as disconnected.After gaslift normal circulation technology, on the one hand the annular space gas lift of the technique has been dredged in stratum well
It is discharged hole, underground water is made to take part in drilling circulation, has achieved the purpose that maintain circulation of drilling fluid；On the other hand, it creeps into and washes
Well process is combined into one, and the mudcake of the borehole wall and water-bearing layer are sufficiently rinsed and dredge, to improve water yield.In short, the technique
Heavy caliber geothermal well be can be reduced into well difficulty, reduced into well risk.
Gaslift direct circulation drilling, i.e., on the basis of " gear wheel direct circulation drilling ", using air compressor machine by compressed air along double
The inner and outer pipes annular space of channel air water faucet, double-walled kelly, double-wall drill pipe is sent to positioned at a certain projected depth of double-wall drill pipe
Gaslift mixer.It calms the anger by after floral tube dispersion outside gaslift mixer, into the annulus of double-wall drill pipe and hole wall, and just follows
Ring drilling fluid mixed forms specific gravity and is less than the interior gas, liquid, solid three-phase flow with the following annular space drilling fluid of gaslift mixer of pipe, three-phase
During returning on stream, expansion work of calming the anger, pressure energy is converted to kinetic energy, carries and returns in drilling fluid acceleration；At this moment calm the anger constantly into
Enter the annular space that drills, so that pressure difference is constantly generated between drilling liquid pressure in the flowing of three-phase flow and drilling rod, it will be in fissured waterbearing stratum
Underground water be drawn into bore inner, lifted together with drilling annular circulation liquid with higher speed, cutting carring tap
Outside, mud pit is flowed into.
Gaslift direct circulation mixer is the critical component for realizing gaslift direct circulation, its structural behaviour to the test of project extremely
Close it is important, but in the prior art mixer have the following deficiencies: high speed in 1, mixer compressed air outflow when, meeting
Borehole wall is caused directly to wash away, is easily damaged drilling；2 mixers needs are attached with single wall drilling rod, since single wall bores
Rod-type number is different, it is also necessary to and corresponding single wall drilling rod produces the fitting body of the different mixer of a variety of sizes, cumbersome, and
And waste of resource.
Summary of the invention
The purpose of the present invention is to provide a kind of gaslift direct circulation drilling mixers, to solve to mention in above-mentioned background technique
Out the problem of.Good circulated gases may be implemented with mixer in the gaslift direct circulation drilling, realize gas-liquid mixed and lifting
Effect, and the setting of fitting body and crossover sub can be realized the connection function with double-wall drill pipe, single wall drilling rod；Outside bridge-type
Floral tube is equipped with bridge opening joint-cutting, can effectively prevent high-speed flow from directly causing to impact to drilling well hole wall, protects drilling well；And bridge
The outer floral tube of formula can be dismounted easily very much, and very convenient replacement, structure is simple, but highly effective, can be good at
The effect of gas-liquid mixed is completed in gaslift direct circulation drilling.
To achieve the above object, the invention provides the following technical scheme:
A kind of gaslift direct circulation drilling floral tube and crossover sub outside mixer, including fitting body, inner core, bridge-type,
Inner core, is located at the inner cavity of the fitting body, and the inner core passes through circlip and connector in one end of pin end
Body is mutually fixed, and the inner core other end is mutually fixed in such a way that boss positions with fitting body；The inner core and fitting body it is interior
There is annular space between wall；
The outer floral tube of bridge-type, set are connected on the outside of the fitting body；
Crossover sub is threadedly coupled to the other end of the fitting body far from the inner core public access head end；
Wherein, the outer floral tube outer surface of the bridge-type offers the bridge opening of middle part protrusion, the bridge opening and the outer floral tube of bridge-type it
Between formed can be with the bridge opening joint-cutting of two-way jet flow, the fitting body offer ventilation by the side wall perforation that floral tube outside bridge-type wraps up
Hole, and venthole is communicated with annular space.
Preferably, when the crossover sub is socketed in fitting body, the wall thickness face activity of crossover sub and the outer floral tube of bridge-type is connect
Touching.
Preferably, the size of the bridge opening joint-cutting is 0.5-1.0mm.
Preferably, the outer floral tube of bridge-type is enclosed on the lateral wall of the fitting body, one end of the outer floral tube of the bridge-type is fixed
There is convex block, the convex block is actively plugged in the jack that fitting body outer wall opens up.
Preferably, the material of the fitting body, inner core, bridge-type outer floral tube, convex block and crossover sub is 4145H structural steel；
Tensile strength >=965Mpa of the fitting body and crossover sub, yield strength >=760Mpa, elongation >=13%.
Preferably, the convex block is an integral molding structure with the outer floral tube of bridge-type.
Preferably, Core support is fixedly installed in the annular space between the inner core and fitting body.
Preferably, the both ends of the inner core are provided with O-ring seal.
Compared with prior art, the beneficial effects of the present invention are:
Fitting body of the invention is equipped with by its internal screw thread and inner core pin end, can be very good and double-wall drill pipe
It is connected, realization is relatively fixed, and inner core one end is mutually fixed by circlip with fitting body, and the other end and connector of inner core
Boss in body through-hole completes positioning, then realizes sealing function by O-ring seal, prevents the compression recent from annular space
Air is from fitting body through-hole internal leakage.
Jack is offered on fitting body lateral wall of the invention, activity is inserted with convex block, flower outside convex block and bridge-type in jack
Pipe is integrally formed, so that structure is more firm, the outer floral tube one end of bridge-type is cooperated solid by the grafting effect of convex block and jack
Fixed, the other end realizes limit and fixed function by crossover sub, when crossover sub is socketed in fitting body, crossover sub with
The wall thickness face movable contact of the outer floral tube of bridge-type, axially realizes squeezing effect to floral tube outside bridge-type, thus outside to bridge-type
Floral tube realizes the fixed effect at both ends, when needing to dismount floral tube outside bridge-type, only needs first to back out crossover sub, then i.e. removable
The outer floral tube of lower bridge-type, it is very easy.
The present invention penetrates through in the fitting body outside annular space and bridge-type between floral tube and offers venthole, for allowing annular
Compressed air circulation in gap enters in drilling well, and then realizes the gas lift of gaslift direct circulation, and the outer floral tube surface of bridge-type is equal
It is even to offer bridge opening, protrusion in the middle part of bridge opening, so as to form that be with the bridge opening joint-cutting of two-way jet flow, the size of bridge opening joint-cutting
0.5-1.0mm is suitable for many common stratum, is suitble to when compressed gas is flowed out by venthole, to brill from bridge opening joint-cutting
Jet flow in well, and because bridge opening gap can will greatly reduce high speed compression air-flow to well bore with two-way jet flow
The direct impact of wall, effectively prevents high-speed flow from damaging to drilling well hole wall.
The present invention is machined with external screw thread in fitting body lower end, and externally threaded setting is used to the crossover sub that is cooperatively connected, conversion
The other end of connector is also equipped with external screw thread, on the one hand is used to cooperate to be plugged in single wall drilling rod, on the other hand also for reality
The effect of the existing outer floral tube of above-mentioned fixed bridge-type, and the setting of crossover sub, can manufacture for the single wall drilling rod of various outer diameter
At different model, so there is no need to a kind of single wall drilling rods of every correspondence just to replace a kind of fitting body, and the structure of crossover sub
Relatively simple for the structure of fitting body, this is also reduced resource waste in degree significantly, also saves manufacture knot
The time of the relative complex fitting body of structure.
Good circulated gases may be implemented in structure of the invention, realize gas-liquid mixed and castering action, and fitting body
With the setting of crossover sub, the connection function with double-wall drill pipe, single wall drilling rod can be realized；The outer floral tube of bridge-type is cut equipped with bridge opening
Seam, can effectively prevent high-speed flow from directly causing to impact to drilling well hole wall, protect drilling well；And the outer floral tube of bridge-type can be very light
Pine dismount, and very convenient replacement, structure is simple, but highly effective, can be good in gaslift direct circulation drilling
Complete the effect of gas-liquid mixed.
Detailed description of the invention
Fig. 1 is structure sectional view of the invention；
Fig. 2 is the outer floral tube structural schematic diagram of bridge-type of the invention.
In figure: 1 fitting body, 2 inner cores, 3 bridge-types outer floral tube, 4 bridge openings, 5 bridge opening joint-cuttings, 6 crossover subs, 7 circlips, 8
Core support, 11 jacks, 12 ventholes, 13 annular spaces, 31 convex blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2:
A kind of gaslift direct circulation drilling floral tube 3, convex block 31 and conversion outside mixer, including fitting body 1, inner core 2, bridge-type
Connector 6, the outer floral tube 3 of fitting body 1, inner core 2, bridge-type, convex block 31 and crossover sub 6 are all made of 4145H structural steel and are made, and make
Tensile strength >=965Mpa of fitting body 1 and crossover sub 6, yield strength >=760Mpa, elongation are equal to >=13%, are come with this
The high-bearing capacity requirement for realizing this mixer, as an optimum condition, when tensile strength is 1000Mpa, yield strength is
When 800Mpa, elongation are 15%, fitting body 1 and crossover sub 6 are easier to realize manufacture, and bearing capacity can meet
It is required that and joint phosphorating treatment, its use is increased to be protected at this better butt joint using ladle modeling thread protector
Service life.
The inner sidewall of 1 one end of fitting body is machined with internal screw thread, and internal screw thread is used to cooperate the outer tube of grafting double-wall drill pipe, realizes
Spiral positioning, the lateral wall of 1 other end of fitting body are machined with external screw thread, and external screw thread is used to cooperate grafting single wall drilling rod, complete with
The connection of single wall drilling rod, to realize the flowing of circulation fluid in gaslift direct circulation.
Inner core 2 is provided in the inner cavity of fitting body 1, one end of inner core 2 is set as public access head dummy, and inner core 2 is set as public access
Head dummy is in order to which when fitting body 1 is connect with double-wall drill pipe outer tube, inner core 2 can cooperate with the female connector of double-wall drill pipe inner tube
Grafting, to realize the sealed connection of inner core 2 Yu double-wall drill pipe inner tube, one end that inner core 2 is set as public access head dummy passes through elasticity
Retaining ring 7 is fixed with 1 phase of fitting body, and 2 other end of inner core is fixed in such a way that boss positions with 1 phase of fitting body, the both ends of inner core 2
Axially position is carried out with fitting body 1 respectively, can effectively prevent that relative motion occurs between inner core 2 and fitting body 1.
The both ends of inner core 2 are provided with O-ring seal, the setting of O-ring seal, and one end is used to reinforce inner core 2 and double-walled
The sealing effect of drilling rod inner tube junction, the other end is used to reinforce the sealing effect of inner core 2 Yu 1 boss junction of fitting body, interior
Annular space 13 is formed between core 2 and the inner wall of fitting body 1, annular space 13 is used to circulate compressed air, inner core 2 and fitting body
Core support 8 is fixedly installed in annular space 13 between 1, Core support 8 can be played between inner core 2 and fitting body 1
Supporting role can make annular space 13 preferably complete the mobilization of compressed air.
The outer floral tube 3 of bridge-type is enclosed on the lateral wall of fitting body 1, one end of the outer floral tube 3 of bridge-type is fixed with convex block 31, convex block
31 are an integral molding structure with the outer floral tube 3 of bridge-type, so that the structure of the outer floral tube 3 of bridge-type is more stable, convex block 31 is actively plugged in
In the jack 11 that 1 outer wall of fitting body opens up, jack 11 is provided in 1 lateral wall of fitting body, and the outer floral tube 3 of bridge-type passes through 31 He of convex block
The cooperation grafting of the outer floral tube 3 of bridge-type, to realize the preliminary fixed function of bridge-type 3 butt joint body 1 of outer floral tube.
Outer 3 outer surface of floral tube of bridge-type offers the bridge opening 4 of middle part protrusion, and being formed between bridge opening 4 and the outer floral tube 3 of bridge-type can be with
The bridge opening joint-cutting 5 of two-way jet flow, the size of bridge opening joint-cutting 5 are 0.8mm, can be very good to adapt to many common stratum, bridge opening seam
Gap 5 can will be greatly reduced direct impact of the high speed compression air-flow to drilling well hole wall, effectively be prevented with two-way jet flow
High-speed flow damages drilling well hole wall, and fitting body 1 offers venthole 12 by the side wall perforation that floral tube 3 wraps up outside bridge-type,
And venthole 12 is communicated with annular space 13, venthole 12 is used to go out the compressed air delivery in annular space 13, then
Entered in well bore by the two-way jet flow in bridge opening gap 5, realizes gas lift.
Fitting body 1 is machined with external screw thread one end and is socketed with crossover sub 6 by being threadedly engaged, when crossover sub 6 is socketed in
When fitting body 1, the wall thickness face movable contact of crossover sub 6 and the outer floral tube 3 of bridge-type realizes crossover sub 6 to floral tube 3 outside bridge-type
Extruding far from 31 one end of convex block is fixed, so that floral tube 3 outside bridge-type is fixed between jack 11 and crossover sub 6, makes its nothing
Method moves, and crossover sub 6 is also machined with external screw thread far from 1 one end lateral wall of fitting body, and the external screw thread of crossover sub 6 is used to
It is plugged in single wall drilling rod, the setting of crossover sub 6, can manufacture for the single wall drilling rod of various outer diameter into different model, this
There is no need to the fitting bodies 1 that a kind of single wall drilling rod of every correspondence just replaces a kind of mixer for sample.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of gaslift direct circulation drilling mixer, including the outer floral tube (3) of fitting body (1), inner core (2), bridge-type and conversion connect
Head (6), it is characterised in that:
Inner core (2), is located at the inner cavity of the fitting body (1), and the inner core (2) passes through circlip in one end of pin end
(7) it is mutually fixed with fitting body (1), inner core (2) other end is mutually fixed in such a way that boss positions with fitting body (1)；Institute
Stating between inner core (2) and the inner wall of fitting body (1) has annular space (13)；
The outer floral tube (3) of bridge-type, set are connected on the outside of the fitting body (1)；
Crossover sub (6) is threadedly coupled to the other end of the fitting body (1) far from the inner core (2) public access head end；
Wherein, outer floral tube (3) outer surface of the bridge-type offers the bridge opening (4) of middle part protrusion, flower outside the bridge opening (4) and bridge-type
The side wall that can be wrapped up with the bridge opening joint-cutting (5) of two-way jet flow, the fitting body (1) by floral tube outside bridge-type (3) is formed between pipe (3)
Perforation offers venthole (12), and venthole (12) is communicated with annular space (13).
2. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the crossover sub
(6) when being socketed in fitting body (1), the wall thickness face movable contact of crossover sub (6) and the outer floral tube (3) of bridge-type.
3. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the bridge opening joint-cutting
(5) size is 0.5-1.0mm.
4. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the fitting body (1)
Lateral wall on be enclosed with the outer floral tube (3) of bridge-type, one end of the outer floral tube (3) of the bridge-type is fixed with convex block (31), the convex block
(31) it is actively plugged in the jack (11) that fitting body (1) outer wall opens up.
5. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the fitting body (1),
The material of inner core (2), bridge-type outer floral tube (3), convex block (31) and crossover sub (6) is 4145H structural steel；
Tensile strength >=965Mpa of the fitting body (1) and crossover sub (6), yield strength >=760Mpa, elongation >=
13%.
6. a kind of gaslift direct circulation drilling mixer according to claim 4, it is characterised in that: the convex block (31) with
The outer floral tube (3) of bridge-type is an integral molding structure.
7. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the inner core (2) with
Core support (8) are fixedly installed in annular space (13) between fitting body (1).
8. a kind of gaslift direct circulation drilling mixer according to claim 1, it is characterised in that: the inner core (2)
Both ends are provided with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048428.7A CN106761505B (en) | 2017-01-21 | 2017-01-21 | A kind of gaslift direct circulation drilling uses mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048428.7A CN106761505B (en) | 2017-01-21 | 2017-01-21 | A kind of gaslift direct circulation drilling uses mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761505A CN106761505A (en) | 2017-05-31 |
| CN106761505B true CN106761505B (en) | 2018-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710048428.7A Expired - Fee Related CN106761505B (en) | 2017-01-21 | 2017-01-21 | A kind of gaslift direct circulation drilling uses mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761505B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724968B (en) * | 2017-10-24 | 2019-03-08 | 西华大学 | A kind of double-wall drill pipe Liqiud-gas mixing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1260504A1 (en) * | 1984-02-29 | 1986-09-30 | Туркменский Научно-Исследовательский Геологоразведочный Институт | Apparatus for drilling large-diameter boreholes |
| SU1315608A1 (en) * | 1985-12-07 | 1987-06-07 | Кыштымский машиностроительный завод им.М.И.Калинина | Submersible pneumatic percussive tool for earth-drilling |
| CN2046920U (en) * | 1989-04-14 | 1989-11-01 | 李任年 | Gas lift counter-circulating simple drill |
| SU1760079A1 (en) * | 1989-06-27 | 1992-09-07 | Производственное Геологическое Объединение "Центргеология" | Air lift mixer for reverse circulation drilling |
| FR2650335B1 (en) * | 1989-07-28 | 1994-03-04 | Bouygues Offshore | DEVICE FOR PERFORMING A PERCUSSION Hole BORING |
| CN203374200U (en) * | 2013-06-19 | 2014-01-01 | 中国地质科学院勘探技术研究所 | Air distribution device for power-head drilling rig and rotary-table drilling rig |
| CN105113978A (en) * | 2015-09-16 | 2015-12-02 | 中国石油集团川庆钻探工程有限公司 | Single large-diameter reverse circulation air hammer capable of being used for large-size well hole drilling |
| CN106089026A (en) * | 2016-08-11 | 2016-11-09 | 中国水利水电第十工程局有限公司 | A kind of penetrating type down-the-hole impacter intersection air distributing device |
-
2017
- 2017-01-21 CN CN201710048428.7A patent/CN106761505B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1260504A1 (en) * | 1984-02-29 | 1986-09-30 | Туркменский Научно-Исследовательский Геологоразведочный Институт | Apparatus for drilling large-diameter boreholes |
| SU1315608A1 (en) * | 1985-12-07 | 1987-06-07 | Кыштымский машиностроительный завод им.М.И.Калинина | Submersible pneumatic percussive tool for earth-drilling |
| CN2046920U (en) * | 1989-04-14 | 1989-11-01 | 李任年 | Gas lift counter-circulating simple drill |
| SU1760079A1 (en) * | 1989-06-27 | 1992-09-07 | Производственное Геологическое Объединение "Центргеология" | Air lift mixer for reverse circulation drilling |
| FR2650335B1 (en) * | 1989-07-28 | 1994-03-04 | Bouygues Offshore | DEVICE FOR PERFORMING A PERCUSSION Hole BORING |
| CN203374200U (en) * | 2013-06-19 | 2014-01-01 | 中国地质科学院勘探技术研究所 | Air distribution device for power-head drilling rig and rotary-table drilling rig |
| CN105113978A (en) * | 2015-09-16 | 2015-12-02 | 中国石油集团川庆钻探工程有限公司 | Single large-diameter reverse circulation air hammer capable of being used for large-size well hole drilling |
| CN106089026A (en) * | 2016-08-11 | 2016-11-09 | 中国水利水电第十工程局有限公司 | A kind of penetrating type down-the-hole impacter intersection air distributing device |
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| CN106761505A (en) | 2017-05-31 |
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Effective date of registration: 20171024 Address after: The Huaihe River Road in Anhui province Bengbu city 233060 Longzihu District No. 563 Applicant after: The first hydrogeological engineering geological survey bureau of Anhui Geological Prospecting Bureau Address before: The Huaihe River Road in Anhui province Bengbu city 233099 Longzihu District No. 563 Applicant before: Yu Lei |
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Granted publication date: 20181211 Termination date: 20210121 |