CN105672872B - A kind of oil/gas well downhole hydraulic hammer - Google Patents
A kind of oil/gas well downhole hydraulic hammer Download PDFInfo
- Publication number
- CN105672872B CN105672872B CN201610221646.1A CN201610221646A CN105672872B CN 105672872 B CN105672872 B CN 105672872B CN 201610221646 A CN201610221646 A CN 201610221646A CN 105672872 B CN105672872 B CN 105672872B
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- CN
- China
- Prior art keywords
- shuttle
- mandrel
- sliding sleeve
- cylinder
- internal diameter
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The present invention proposes a kind of oil/gas well downhole hydraulic hammer, and flow velocity when impact at the nozzle hole of lower part increases downwards, the principle that pressure lowers so that the formation pressure difference above and below shuttle, shuttle impact the hammering block block of lower part with tup；It drives switching sliding sleeve to move down simultaneously and closes third hole, close flow channel, so that fluid is static in tool, pressure recovery, the pressure of recovery and the flow differential pressure outside shuttle is caused to form inside and outside differential pressure, effect shuttle makes shuttle move upwards, the state before impact is returned to, impact effect of the present invention is more preferable, longer life expectancy, it reduces drilling tool and removes the time, save rig time.
Description
Technical field
The present invention relates to a kind of oil/gas well downhole hydraulic hammers.
Background technology
In oil/gas well underground work, especially horizontal well drilling, when boring mill bridge plug, the bit pressure that ground provides tends not to
Actually active increase is on drill bit (junk mill) so that drill bit does not have pressure normally to creep into.Existing similar means are two big using having
Class：One kind is to push drill bit by piston, provide the bit pressure needed for drill bit；One kind is to push piston, percussive drill bit shape by pressure difference
At percussion power, and the reset after tapping is to lean on spring reset, and the restricted lifetime of spring, determines that the old-fashioned service life is shorter.
Invention content
The present invention proposes a kind of oil/gas well downhole hydraulic hammer, and the design is passed through in the case where ground is pumped according to downhole fluid
Tool generates the related impact force outside the bit pressure of ground, effective broken formation rock or bridge plug.
The technical proposal of the invention is realized in this way：
A kind of oil/gas well downhole hydraulic hammer, including top connection, cylinder, shuttle sliding sleeve, mandrel, shuttle, switching sliding sleeve, hammer
Mandrel, the top connection outer wall socket installation limit are installed in head, felt seat, felt block, lower contact and plug, the top connection bottom end
Lower contact, the lower contact top installation are installed in position pipe nipple, the limiting pup joint outer wall socket installation cylinder, the cylinder bottom end
Felt seat, installs felt block on the felt seat, and the mandrel and the cylinder are coaxial and formed and form gap between the two；
The outer diameter of the outer barrel of the mandrel is in upper coarse and lower fine stepped annular structure, and the internal diameter of the inner cylinder of the shuttle sliding sleeve is in
The outer barrel thickness intersection of the outer barrel installation of upper coarse and lower fine stepped annular structure and the mandrel that just coincide, the mandrel is equipped with a circle
Gap defect, the fault location are connected to equipped with the first hole inside mandrel, which forms first pressure with shuttle sliding sleeve inner wall
Cavity；
Coaxial shuttle is installed in the internal diameter thinner end socket of the shuttle sliding sleeve, the internal diameter of the shuttle in upper coarse and lower fine,
Tup is installed in the bottom end of the shuttle internal diameter thinner end, and mandrel plug is installed in the mandrel bottom end, and the switching sliding sleeve is presented slightly
Thin cylindrical shape down, the outer diameter and internal diameter of the thinner end that the outer diameter and internal diameter of the relatively butt end of switching sliding sleeve are respectively greater than；It is described
The outer wall of the relatively butt end of switching sliding sleeve coincide be inserted into shuttle internal diameter compared with butt end inside, the outer wall of the thinner end of switching sliding sleeve, which coincide, to be inserted
Enter inside shuttle internal diameter thinner end；The inner wall of the relatively butt end of the switching sliding sleeve forms second pressure cavity, institute with mandrel outer wall
The mandrel for stating second pressure cavity position is equipped with the second hole being connected to inside mandrel；Below the thinner end of switching sliding sleeve
Mandrel is equipped with third hole；
For the felt seat in hollow cylinder and coaxial with cylinder, felt seat is equipped with the nozzle hole inside and outside connection cylinder.
Preferably, the volume size of the first pressure cavity is less than the volume size of second pressure cavity.
Preferably, felt block bottom end is equipped with circlip for hole.
What the present invention generated has the beneficial effect that：It is the flow velocity increase at the nozzle hole of lower part when the present invention impacts downwards,
The principle that pressure lowers so that the formation pressure difference above and below shuttle, shuttle impact the hammering block block of lower part with tup；It drives and opens simultaneously
It closes sliding sleeve and moves down closing third hole, that is, close flow channel so that fluid is static in tool, leads to pressure recovery, restores
Pressure and shuttle outside flow differential pressure formed inside and outside differential pressure, effect shuttle shuttle is moved upwards, return to impact before
State, impact effect of the present invention is more preferable, longer life expectancy, reduces drilling tool and removes the time, saves rig time.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural profile illustration of the present invention.
Specific implementation mode
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 describes, 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.
A kind of oil/gas well downhole hydraulic hammer as shown in Figure 1, including top connection 1, cylinder 3, shuttle sliding sleeve 4, mandrel 5, shuttle
9, core is installed in switching sliding sleeve 10, tup 11, felt seat 12, felt block 13, lower contact 15 and plug 16,1 bottom end of the top connection
Axis 5,1 outer wall of top connection socket installation limiting pup joint 2,2 outer wall of limiting pup joint socket installation cylinder 3, the cylinder 3
Lower contact 15 is installed in bottom end, and the lower contact top installs felt seat 12, felt block 13, the core are installed on the felt seat 12
Axis 5 and the cylinder 3 are coaxial and are formed and form gap between the two.
The outer diameter of the outer barrel of mandrel 5 is in upper coarse and lower fine stepped annular structure, and the internal diameter of the inner cylinder of the shuttle sliding sleeve 4 is presented
The outer barrel installation of thin stepped annular structure and the mandrel 5 that just coincide under slightly, the outer barrel thickness intersection of the mandrel 5 are equipped with a circle
Gap defect, the fault location are connected to equipped with the first hole 6 inside mandrel 5, which forms the first pressure with 4 inner wall of shuttle sliding sleeve
Power cavity 17.
Coaxial shuttle 9 is installed in the internal diameter thinner end socket of shuttle sliding sleeve 4, and the internal diameter of the shuttle 9 is in upper coarse and lower fine, institute
The bottom end installation tup 11 of 9 internal diameter thinner end of shuttle is stated, mandrel plug 16, the switching sliding sleeve 10 are installed in 5 bottom end of the mandrel
In upper coarse and lower fine cylindrical shape, the outer diameter of thinner end that the outer diameter and internal diameter of the relatively butt end of switching sliding sleeve 10 are respectively greater than and interior
Diameter；The outer wall of the relatively butt end of the switching sliding sleeve 10 coincide be inserted into 9 internal diameter of shuttle compared with butt end inside, the thinner end of switching sliding sleeve 10
Outer wall coincide be inserted into shuttle internal diameter thinner end inside；The inner wall of the relatively butt end of the switching sliding sleeve 10 is formed with 5 outer wall of mandrel
Second pressure cavity 18, the mandrel 5 of 18 position of second pressure cavity are equipped with the second hole 7 being connected to inside mandrel 5；
Mandrel 5 below the thinner end of switching sliding sleeve 10 is equipped with third hole 8；The felt seat 12 is in hollow cylinder and and cylinder
3 is coaxial, and felt seat 12 is equipped with the nozzle hole 14 inside and outside connection cylinder, and the volume size of the first pressure cavity 17 is less than the
The volume size of two pressure cavities 18,13 bottom end of felt block are equipped with circlip for hole.
The operation principle of the present invention is that：The present invention impacts downwards, and fluid impact is flowed out from nozzle hole 14 in mandrel 5.According to
Bernoulli equation, the flow velocity at the nozzle hole 14 of lower part increase, and pressure lowers so that the formation pressure difference of about 9 shuttle, shuttle 9
It moves down, the hammering block block of lower part is impacted with tup 11.During shuttle moves up and down, while switching sliding sleeve being driven to move down
Third hole 8 is closed, that is, closes flow channel so that fluid remains static in mandrel, leads to pressure recovery, recovery
Pressure forms inside and outside differential pressure with the flow differential pressure outside shuttle, and effect shuttle makes shuttle 9 move upwards, returns to the shape before impact
State, impact effect of the present invention is more preferable, longer life expectancy, reduces drilling tool and removes the time, saves rig time.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of oil/gas well downhole hydraulic hammer, which is characterized in that including top connection (1), cylinder (3), shuttle sliding sleeve (4), mandrel
(5), shuttle (9), switching sliding sleeve (10), tup (11), felt seat (12), felt block (13), lower contact (15) and plug (16),
Top connection (1) the bottom end installation mandrel (5), top connection (1) the outer wall socket installation limiting pup joint (2), the limit are short
(2) outer wall socket installation cylinder (3) is saved, cylinder (3) the bottom end installation lower contact (15), felt is installed on the lower contact top
Seat (12), installation felt block (13) on the felt seat (12), the mandrel (5) and the cylinder (3) are coaxial and form the two
Between form gap；
The outer diameter of the outer barrel of the mandrel (5) is in upper coarse and lower fine stepped annular structure, the internal diameter of the inner cylinder of the shuttle sliding sleeve (4)
In upper coarse and lower fine stepped annular structure and just coincide the outer barrel installation of mandrel (5), the outer barrel thickness intersection of the mandrel (5)
Equipped with a circle gap defect, which is connected to mandrel (5) inside, the defect and shuttle sliding sleeve (4) equipped with the first hole (6)
Inner wall forms first pressure cavity (17)；
Coaxial shuttle (9) is installed in the internal diameter thinner end socket of the shuttle sliding sleeve (4), and the internal diameter of the shuttle (9) is presented slightly
It is lower thin, the bottom end installation tup (11) of shuttle (9) the internal diameter thinner end, mandrel (5) the bottom end installation mandrel plug (16),
The switching sliding sleeve (10) is in upper coarse and lower fine cylindrical shape, and the outer diameter and internal diameter of the relatively butt end of switching sliding sleeve (10) are respectively greater than
Thinner end outer diameter and internal diameter；The outer wall of the relatively butt end of the switching sliding sleeve (10), which coincide, is inserted into shuttle (9) internal diameter compared with butt end
Inside, the outer wall of the thinner end of switching sliding sleeve (10), which coincide, to be inserted into inside shuttle internal diameter thinner end；The switching sliding sleeve (10)
Inner wall compared with butt end forms second pressure cavity (18), the mandrel of second pressure cavity (18) position with mandrel (5) outer wall
(5) it is equipped with and is connected to internal the second hole (7) of mandrel (5)；It is set on mandrel (5) below the thinner end of switching sliding sleeve (10)
There is third hole (8)；
Coaxially in hollow cylinder and with cylinder (3), felt seat (12) is equipped with inside and outside connection cylinder the felt seat (12)
Nozzle hole (14).
2. a kind of oil/gas well downhole hydraulic hammer as described in claim 1, which is characterized in that the first pressure cavity (17)
Volume size is less than the volume size of second pressure cavity (18).
3. a kind of oil/gas well downhole hydraulic hammer as described in claim 1, which is characterized in that felt block (13) bottom end is equipped with
Circlip for hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221646.1A CN105672872B (en) | 2016-04-11 | 2016-04-11 | A kind of oil/gas well downhole hydraulic hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221646.1A CN105672872B (en) | 2016-04-11 | 2016-04-11 | A kind of oil/gas well downhole hydraulic hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105672872A CN105672872A (en) | 2016-06-15 |
| CN105672872B true CN105672872B (en) | 2018-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610221646.1A Active CN105672872B (en) | 2016-04-11 | 2016-04-11 | A kind of oil/gas well downhole hydraulic hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672872B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911103B (en) * | 2020-08-11 | 2023-10-20 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101052211B1 (en) * | 2010-10-28 | 2011-07-27 | 임병덕 | Compressed air hammer for ground excavation and structure of its sleeve |
| CN102094577B (en) * | 2010-12-09 | 2013-05-29 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN203925322U (en) * | 2014-07-08 | 2014-11-05 | 湖北欧伦科技有限公司 | A kind of coiled tubing connector with pressure |
| CN203925407U (en) * | 2014-07-08 | 2014-11-05 | 湖北欧伦科技有限公司 | A kind of coiled tubing pipe close |
| CN205577841U (en) * | 2016-04-11 | 2016-09-14 | 湖北欧伦科技有限公司 | Oil gas well is water conservancy hammer in pit |
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2016
- 2016-04-11 CN CN201610221646.1A patent/CN105672872B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105672872A (en) | 2016-06-15 |
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