CN206267815U - Drilling type continuous sand flushing device - Google Patents
Drilling type continuous sand flushing device Download PDFInfo
- Publication number
- CN206267815U CN206267815U CN201621244755.7U CN201621244755U CN206267815U CN 206267815 U CN206267815 U CN 206267815U CN 201621244755 U CN201621244755 U CN 201621244755U CN 206267815 U CN206267815 U CN 206267815U
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- Prior art keywords
- drill
- sand
- double
- drill bit
- load fluid
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Abstract
The utility model provides a kind of drilling type continuous sand flushing device, including sand washing drill bit, double-walled drill string, rotatory sealing well head, rotating driving device, sand cleaning fluid manifold, load fluid manifold；Sand washing drill bit includes body in drill body, drill bit.Rotating driving device drives double-walled drill string rotating to drive sand washing drill bit rotary cutting shaft bottom hard sand post；The high pressure turbulence cavity with many curved surface chambers is formed in drill body hypomere inwall and drill bit between external wall, a part of sand cleaning fluid in high pressure turbulence cavity can provide suction through the high-pressure jet that backward jet nozzle is produced, on the one hand ensure that low pressure well normal circulation takes sand, on the other hand shaft bottom sand setting can be promoted to depart from shaft bottom, beneficial to taking sand；Another part sand cleaning fluid is sprayed through bit nozzle, forms asymmetric jet, and load fluid suction chamber is entered beneficial to shaft bottom loose sand, improves sand-transport effeciency.The device can efficiently accomplish the prune job to low pressure oil well hard sand post while ensureing that Oil/gas Well is safe.
Description
Technical field
The utility model is related to field of mechanical technique, more particularly to a kind of drilling type continuous sand flushing device.
Background technology
Formation sand production is inevitable one of major issue in oil-gas field development production process, China central and east oil field by
Long in recovery time, recovery percent of reserves is high, and the factor such as serious reduction of reservoir pressure coefficient, formation sand production is particularly acute.According to statistics, river
The sand output well in Chinese oil field accounts for 50% or so of total recovery well number, oil field every year because caused by formation sand production workover treatment number of times account for always
The 45%-50% of well workover time, considerably increases oil field production cost.Reservoir sand deposits to form sand post in the wellbore, floods payzone,
Cause yield reduction；Meanwhile, wear and tear underground and surface production facilities cause Oil/gas Well to damage；The borehole wall may be caused to collapse when serious
Collapsing causes Oil/gas Well to stop production.Therefore, during Oil/gas Well production development, must be removed in time into the reservoir sand in pit shaft.
At present, the conventional sand removal technology in scene is broadly divided into two classes：(1) hydraulic sand washing, including conventional hydraulic sand washing (is just followed
Ring sand washing, inverse circular sand washing adapter, square impact backwash sand washing etc.), low-density gasification liquid sand washing, temporarily envelope agent hydraulic sand washing, jet flow negative pressure punching
Sand etc.；(2) mechanical sand-picking, drags for sand, oil pipe conveying-type and drags for sand etc. including steel wire rope conveying-type.The key of hydraulic sand washing operation be
Circulation is set up in pit shaft, so that reservoir sand is carried out into well using sand cleaning fluid, but for central and east oil field low pressure well (pressure system
Number cannot set up circulation less than 1) using conventional load fluid, and load fluid directly leaks into stratum；Using low-density sand washing liquid or penetrate
Although stream negative pressure sand washing can normal circulation, the hard sand post sand removal effect for serious consolidation is less obvious.Machinery is dragged for
Sand technology is not required to the circulation of external working solution, will not polluted reservoir, it is simple to operate, but when shaft bottom sand setting consolidates to form sand post, drag for
Sand operation is often difficult successfully.
Understand above, the hard sand post for not yet having effective method at present to solve to be produced in low pressure oil gas well liquid loading
Problem.
Utility model content
The purpose of this utility model is to solve the defect that above-mentioned prior art is present, there is provided one kind is for removing low pressure oil
The drilling type continuous sand flushing device of well hard sand post.
A kind of drilling type continuous sand flushing device, including：Sand washing drill bit, double-walled drill string, rotatory sealing well head, rotation driving dress
Put, sand cleaning fluid manifold, load fluid manifold；
The sand washing drill bit includes：Body in drill body, drill bit；
The upper end of body is provided with drill bit nipple in drill bit, and body is hollow circular cylinder structure, the hollow circular cylinder in drill bit
Epimere to return passage on load fluid, middle hypomere is load fluid suction chamber；
The upper end-face edge of drill body constitutes drill body joint, and the hypomere on the outside of drill body circumferentially has cutting
Rib, the bottom surface of drill body is provided with load fluid entrance, and load fluid entrance is connected with the load fluid suction chamber；Load fluid enters
Mouth overlaps with the axis of drill body；Formed with many curved surface chambers between external wall in drill body hypomere inwall and drill bit
High pressure turbulence cavity, forms the drill bit ring with not isometrical annular space between external wall in drill body epimere inwall and drill bit
It is empty；High pressure turbulence cavity is connected with drill bit annular space；
The hypomere of body is disposed with some to backward jet nozzle in drill bit, and the sole arrangement of drill body has several drill bits
Nozzle；The backward jet nozzle entrance is connected with high pressure turbulence cavity, and outlet is located in load fluid suction chamber；Bit nozzle enters
Mouth is connected with the high pressure turbulence cavity, and outlet is connected with the pit shaft outside sand washing drill bit；
The double-walled drill string includes double-wall drill pipe coupling, the double-wall drill pipe inner tube of hollow structure；In the double-wall drill pipe
Pipe inner passage composition center flow channels；The bottom of double-wall drill pipe inner tube is provided with double-wall drill pipe nipple, and the double-walled is bored
The outer wall of bar inner tube constitutes double-wall drill pipe annular space, outlet and the center mistake of the double-wall drill pipe nipple with the inwall of double-walled drill string
Circulation road is connected；
Double-walled drill string is formed by the order threaded connection of many double-wall drill pipes, the double-wall drill pipe coupling and double-wall drill pipe
Nipple is threadedly coupled with drill body joint and drill bit nipple respectively；Double-wall drill pipe annular space is connected with drill bit annular space, double
Wall drill pipe annulus are connected with sand cleaning fluid manifold, and drill bit annular space, double-wall drill pipe annular space and sand cleaning fluid manifold composition sand cleaning fluid enter well and leads to
Road；Passage phase passage is returned on center flow channels and load fluid, center flow channels are connected with load fluid manifold, on load fluid
That returns passage, center flow channels and load fluid manifold composition load fluid goes out well passage；
Rotatory sealing well head is set on the ground, for the sealing of double-walled drill string to be fixed on into well head；Rotating driving device sets
Put more than ground, for driving double-walled drill string and sand washing bit.
Further, drilling type continuous sand flushing device as described above, the load fluid entrance is cone.
Further, drilling type continuous sand flushing device as described above, the backward jet nozzle is arranged symmetrically, and quantity is
2-3 pairs, backward jet nozzle is 10 ° -30 ° with the angle of bit-body axis.
Further, drilling type continuous sand flushing device as described above, the bit nozzle 112 is presented unsymmetrical arrangement,
Quantity is 3-5.
Further, drilling type continuous sand flushing device as described above, the equivalent diameter of the bit nozzle is less than backward
The equivalent diameter of nozzle.
Further, drilling type continuous sand flushing device as described above, the cutting rib arranges that quantity is 2-3 in pairs
It is right.
Compared with prior art, the beneficial effects of the utility model are as follows：
(1) the rotation sand washing drill bit of the application, instead of conventional mechanical drag in sand drag for abrasive cone or sand is shoveled, realize drill bit and exist
Hard sand post in rotary cutting shaft bottom in the presence of the pressure of the drill, is changed into broken sand, loose sand, beneficial to sand cleaning fluid by the reservoir sand of serious consolidation
Sand is taken, sand removal efficiency is improved；
(2) the backward jet that the backward jet nozzle of the application is produced can produce suction, can effectively reduce
Bottom hole pressure difference, on the one hand ensure that low pressure well normal circulation takes sand, and shaft bottom sand setting on the other hand can be promoted to depart from shaft bottom, carry
Sand washing efficiency high；
(3) the high pressure turbulence cavity of the application has the effect of concussion backflow, and sand cleaning fluid produces whirlpool herein, vorticity disturbance with
Impact walls interact, and so as to increased the energy that backward jet nozzle and bit nozzle export fluid, beneficial to sand washing and take sand.
Brief description of the drawings
Fig. 1 is a kind of structural representation of drilling type continuous sand flushing device of the utility model；
Fig. 2 is a kind of structural representation of the sand washing drill bit of drilling type continuous sand flushing device of the utility model；
Fig. 3 is a kind of schematic three dimensional views of the sand washing drill bit of drilling type continuous sand flushing device of the utility model；
Fig. 4 is a kind of double-wall drill pipe structural representation of drilling type continuous sand flushing device of the utility model.
In figure：1st, sand washing drill bit, 2, pit shaft, 3, double-walled drill string, 4, ground, 5, rotatory sealing well head, 6, rotation driving dress
Put, 7, sand cleaning fluid manifold, 8, load fluid manifold, 11, drill bit nipple, 12, body in drill bit, 13, drill body, 14, drill bit sheet
Body joint, 15, drill bit annular space, 16, load fluid suction chamber, 17, return passage on load fluid, 18, high pressure turbulence cavity, 19, penetrate backward
Flow nozzle, 110, cutting rib, 111, load fluid entrance, 112, bit nozzle, 31, double-wall drill pipe coupling, 32, double-wall drill pipe
Nipple, 33, double-wall drill pipe annular space, 34, double-wall drill pipe inner tube, 35, center flow channels.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below technical side in the utility model
Case is clearly and completely described, it is clear that described embodiment is a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
As Figure 1-Figure 4, drillable continuous sand flushing device of the present utility model, including sand washing drill bit 1, double-walled drill string 3,
Rotatory sealing well head 5, rotation driving fills 6, sand cleaning fluid manifold 7, load fluid manifold 8.
Sand washing drill bit 1 includes drill body 13, drill body joint 14, and body 12 in drill bit, drill bit nipple 11 cuts the wing
Rib 110, drill bit annular space 15, high pressure turbulence cavity 18, backward jet nozzle 19, bit nozzle 112, load fluid entrance 111, load fluid
Suction chamber 16, returns passage 17 on load fluid.The hypomere in the outside of drill body 13 circumferentially has 2 pairs of cutting ribs 110；Drill bit
Interior body 12 is hollow circular cylinder, and hollow circular cylinder epimere is that passage 17 is returned on load fluid, and hollow circular cylinder hypomere is inhaled for load fluid
Enter chamber 16；Load fluid entrance 111 is located at the bottom surface of drill body 13 for cone, is connected with load fluid suction chamber 16, load fluid
Entrance 111 overlaps with the axis of drill body 13.Drill bit annular space 15 is the epimere inwall of drill body 13 and the outer wall of body 12 in drill bit
Between formed not isometrical annular space；High pressure turbulence cavity 18 is between the outer wall of body 12 in the hypomere inwall of drill body 13 and drill bit
The many curved surface chambers for being formed, drill bit annular space 15 is connected with high pressure turbulence cavity 18；The hypomere of body 12 is disposed with 3 pairs and penetrates backward in drill bit
Flow nozzle 19, the axis of backward jet nozzle 19 is in 30 ° of angles, the entrance of backward jet nozzle 19 with the axis of drill body 13
Connected with high pressure turbulence cavity 18, the outlet of backward jet nozzle 19 is located in load fluid suction chamber 16, backward jet nozzle 19
Outlet is in the same plane of load fluid suction chamber 16；The bottom surface unsymmetrical arrangement of drill body 13 has 5 bit nozzles
112, the entrance of bit nozzle 112 is connected with high pressure turbulence cavity 18, and the outlet of bit nozzle 112 is connected with pit shaft 2.
The double-walled drill string 3 includes：It is double-wall drill pipe coupling 31, double-wall drill pipe nipple 32, double-wall drill pipe annular space 33, double
Wall drilling rod inner tube 34, center flow channels 35.Double-walled drill string 3 is formed by many double-wall drill pipe order threaded connections, and double-walled is bored
The double-wall drill pipe coupling 31 of the bottom of post 3 and double-wall drill pipe nipple respectively with the drill body joint 14 of sand washing drill bit 1 and
Drill bit nipple 11 is threadedly coupled with 32 respectively；Double-wall drill pipe annular space 33 is connected with drill bit annular space 15, and double-walled drill string 3 is topmost
Double-wall drill pipe annular space 33 is connected with sand cleaning fluid manifold 7, and drill bit annular space 15, double-wall drill pipe annular space 33 and sand cleaning fluid manifold 7 constitute punching
Sand liquid enters well passage；The center flow channels 35 of double-wall drill pipe inner tube 34 are connected with passage 17 is returned on the load fluid of drill body 13
Logical, the center flow channels 35 of the top double-wall drill pipe inner tube 34 of double-walled drill string 3 are connected with load fluid manifold 8, on load fluid
That returns that passage 17, center flow channels 35 and load fluid manifold 8 constitute load fluid goes out well passage.Rotatory sealing well head 5 is arranged on
On ground 4, for ensureing to drag for sand job safety；Drive entirely enters well casing during rotating driving device 6 is mainly used in operation process
Post rotates.
The course of work and operation principle for carrying out low pressure Oil/gas Well hard sand post sand washing operation using the device are as follows：
When sand washing operation is carried out, the top surface depth of hard sand post in pit shaft is determined first, needs are determined according to the depth
The radical of the double-wall drill pipe for using, is then assembled into well casing post, by assemble enter well casing post lower going-into-well cylinder 2 in.Work as sand flushing drill
During first 1 contact shaft bottom hard sand post, start rotating driving device 6 and drive double-walled drill string 3 and sand washing drill bit 1 to rotate, sand washing drill bit 1
Start to cut shaft bottom hard sand post, the reservoir sand of serious consolidation is changed into broken sand, loose sand；Simultaneously punching is pumped into from sand cleaning fluid manifold 7
Sand liquid.High pressure sand cleaning fluid enters the double-wall drill pipe annular space 33 of double-walled drill string 3 through sand cleaning fluid manifold 7, then by drill bit annular space 15
Into high pressure turbulence cavity 18.A part of ejection by backward jet nozzle 19 of high pressure sand cleaning fluid into high pressure turbulence cavity 18 forms height
Rapid fire stream, produces negative pressure in the load fluid suction chamber 16, the negative pressure by load fluid entrance 111 to the sand cleaning fluid in pit shaft 2 and
Broken sand is aspirated；Another part high pressure load fluid of high pressure turbulence cavity 18 is sprayed by bit nozzle 112 simultaneously, and is produced from agitation shaft bottom
Raw broken sand, loose sand so that shaft bottom sand setting enters under the clear rock effect of sand cleaning fluid and the suction function of load fluid suction chamber 16
Passage 17 is returned on load fluid, and then well is recycled along center flow channels 35 and load fluid manifold 8.As sand washing drill bit 1 is continuous
Cutting shaft bottom hard sand post, reservoir sand gets off in the carrying of sand cleaning fluid and continuously goes out well, and then completes low pressure Oil/gas Well hard sand post
Sand removal process.
Finally it should be noted that：Above example is only used to illustrate the technical solution of the utility model, rather than its limitations；
Although being described in detail to the utility model with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model
The spirit and scope of scheme.
Claims (6)
1. a kind of drilling type continuous sand flushing device, it is characterised in that including：Sand washing drill bit (1), double-walled drill string (3), rotatory sealing
Well head (5), rotating driving device (6), sand cleaning fluid manifold (7), load fluid manifold (8)；
The sand washing drill bit (1) includes：Body (12) in drill body (13), drill bit；
The upper end of body (12) is provided with drill bit nipple (11) in drill bit, and body (12) is hollow circular cylinder structure in drill bit, in this
The epimere of hollow cylinder is that passage (17) is returned on load fluid, and middle hypomere is load fluid suction chamber (16)；
The upper end-face edge of drill body (13) constitutes drill body joint (14), the circumferentially cloth of the hypomere on the outside of drill body (13)
Cutting rib (110) is equipped with, the bottom surface of drill body (13) is provided with load fluid entrance (111), load fluid entrance (111) and institute
State load fluid suction chamber (16) connection；Load fluid entrance (111) overlaps with the axis of drill body (13)；Under drill body (13)
The high pressure turbulence cavity (18) with many curved surface chambers is formed in section inwall and drill bit between body (12) outer wall, on drill body (13)
The drill bit annular space (15) with not isometrical annular space is formed in section inwall and drill bit between body (12) outer wall；High pressure turbulence cavity
(18) connected with drill bit annular space (15)；
In drill bit the hypomere of body (12) be disposed with it is some to backward jet nozzle (19), drill body (13) if sole arrangement have
Dry bit nozzle (112)；Backward jet nozzle (19) entrance is connected with high pressure turbulence cavity (18), and outlet is located at load fluid
In suction chamber (16)；The entrance of bit nozzle (112) is connected with the high pressure turbulence cavity (18), and outlet is with sand washing drill bit (1) outward
Pit shaft (2) connection；
Double-wall drill pipe inner tube (34) of the double-walled drill string (3) including double-wall drill pipe coupling (31), hollow structure；The double-walled
Drilling rod inner tube (34) inner passage composition center flow channels (35)；The bottom of double-wall drill pipe inner tube (34) is provided with double-wall drill pipe
Nipple (32), the outer wall of the double-wall drill pipe inner tube (34) constitutes double-wall drill pipe annular space (33) with the inwall of double-walled drill string (3),
The outlet of the double-wall drill pipe nipple (32) is connected with center flow channels (35)；
Double-walled drill string (3) is formed by the order threaded connection of many double-wall drill pipes, the double-wall drill pipe coupling (31) and double-walled
Drilling rod nipple (32) is threadedly coupled with drill body joint (14) and drill bit nipple (11) respectively；Double-wall drill pipe annular space (33)
It is connected with drill bit annular space (15), double-wall drill pipe annular space (33) is connected with sand cleaning fluid manifold (7), drill bit annular space (15), double-walled are bored
Burr sky (33) and sand cleaning fluid manifold (7) constitute sand cleaning fluid and enter well passage；Passage is returned on center flow channels (35) and load fluid
(17) phase passage, center flow channels (35) are connected with load fluid manifold (8), and passage (17), center excessively stream are returned on load fluid
Passage (35) goes out well passage with load fluid manifold (8) composition load fluid；
Rotatory sealing well head (5) is set on the ground, for double-walled drill string (3) sealing to be fixed on into well head；Rotating driving device
(6) it is arranged on more than ground, for driving double-walled drill string (3) and sand washing drill bit (1) to rotate.
2. drilling type continuous sand flushing device according to claim 1, it is characterised in that the load fluid entrance (111) is
Cone.
3. drilling type continuous sand flushing device according to claim 1, it is characterised in that the backward jet nozzle (19) is right
Claim arrangement, quantity is 2-3 pairs, and backward jet nozzle (19) is 10 ° -30 ° with the angle of drill body (13) axis.
4. drilling type continuous sand flushing device according to claim 1, it is characterised in that the bit nozzle (112) is presented
Unsymmetrical arrangement, quantity is 3-5.
5. drilling type continuous sand flushing device according to claim 1, it is characterised in that the bit nozzle (112) is worked as
Equivalent diameter of the amount diameter less than backward nozzle.
6. drilling type continuous sand flushing device according to claim 1, it is characterised in that the cutting rib (110) is in pairs
Arrangement, quantity is 2-3 pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621244755.7U CN206267815U (en) | 2016-11-21 | 2016-11-21 | Drilling type continuous sand flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621244755.7U CN206267815U (en) | 2016-11-21 | 2016-11-21 | Drilling type continuous sand flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206267815U true CN206267815U (en) | 2017-06-20 |
Family
ID=59041206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621244755.7U Expired - Fee Related CN206267815U (en) | 2016-11-21 | 2016-11-21 | Drilling type continuous sand flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206267815U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437570A (en) * | 2016-11-21 | 2017-02-22 | 西南石油大学 | Drilling type continuous sand blasting device |
| CN107617981A (en) * | 2017-10-11 | 2018-01-23 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN109184620A (en) * | 2018-09-29 | 2019-01-11 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand flushing system |
| CN110566144A (en) * | 2019-09-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Leakage-proof sand washing method and sand washing pipe column |
| CN114293934A (en) * | 2021-12-31 | 2022-04-08 | 杰瑞能源服务有限公司 | Sand washing pipe column and sand washing process |
| CN115162980A (en) * | 2022-07-20 | 2022-10-11 | 西南石油大学 | Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method |
-
2016
- 2016-11-21 CN CN201621244755.7U patent/CN206267815U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437570A (en) * | 2016-11-21 | 2017-02-22 | 西南石油大学 | Drilling type continuous sand blasting device |
| CN107617981A (en) * | 2017-10-11 | 2018-01-23 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN107617981B (en) * | 2017-10-11 | 2019-03-01 | 中国航发北京航空材料研究院 | A kind of spray gun and intensifying method of shot peening strengthening big L/D ratio blind hole |
| CN109184620A (en) * | 2018-09-29 | 2019-01-11 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand flushing system |
| CN109184620B (en) * | 2018-09-29 | 2020-06-23 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand washing system |
| CN110566144A (en) * | 2019-09-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Leakage-proof sand washing method and sand washing pipe column |
| CN114293934A (en) * | 2021-12-31 | 2022-04-08 | 杰瑞能源服务有限公司 | Sand washing pipe column and sand washing process |
| CN115162980A (en) * | 2022-07-20 | 2022-10-11 | 西南石油大学 | Low-pressure leakage-prone reservoir stratum negative pressure jet continuous sand washing device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20211121 |