CN110094184A - Drifting tool - Google Patents
Drifting tool Download PDFInfo
- Publication number
- CN110094184A CN110094184A CN201810098669.7A CN201810098669A CN110094184A CN 110094184 A CN110094184 A CN 110094184A CN 201810098669 A CN201810098669 A CN 201810098669A CN 110094184 A CN110094184 A CN 110094184A
- Authority
- CN
- China
- Prior art keywords
- drifting
- piston
- drill bit
- subchannel
- storage chamber
- 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.)
- Granted
Links
- 239000003814 drug Substances 0.000 claims abstract description 118
- 238000003860 storage Methods 0.000 claims abstract description 69
- 229940079593 drug Drugs 0.000 claims description 60
- 238000007790 scraping Methods 0.000 claims description 47
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 2
- 239000001993 wax Substances 0.000 description 57
- 239000003129 oil well Substances 0.000 description 43
- 230000008021 deposition Effects 0.000 description 36
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000005484 gravity Effects 0.000 description 10
- 238000004090 dissolution Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012188 paraffin wax Substances 0.000 description 4
- 241000282470 Canis latrans Species 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Marine Sciences & Fisheries (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a drifting tool, which comprises an upper end cover, a cartridge, a piston and a drifting gauge; a through medicine storage chamber is arranged in the medicine storage barrel along the axial direction, the first end of the medicine storage barrel is connected with the upper end cover, the second end of the medicine storage barrel is provided with a limiting step, the first end of the piston is hung in the medicine storage chamber, the piston slides in the medicine storage chamber along the axial direction and is limited by the limiting step, and the second end of the piston is connected with the first end of the drift size gauge; be provided with hollow first passageway in the piston, be provided with hollow second passageway in the drift size gauge tool, first passageway and second passageway intercommunication to the medicament that makes to be located the medicine storage chamber flows along first passageway and second passageway. Compared with the prior art that the drifting is carried out by adopting a mechanical drifting mode, the drifting tool provided by the invention improves the success rate of drifting.
Description
Technical field
The present invention relates to oil field development technical field more particularly to a kind of drifting tools.
Background technique
In oil field development production process, oil well inner wall can generate wax deposition phenomenon, and wax deposition can block oil-producing formation, reduce oil well
Yield, while also will increase oil well load, it is be easy to cause production accident, it is clear therefore, it is necessary to use paraffin removal tool to carry out oil well
Reason.Need first to carry out drifting operation before wax removal, drifting operation is that drifting tool is sent into artificial bottom of a well, for examining oil well
Passability, to guarantee that paraffin removal tool can smoothly be lowered into preset well depth position during wax removal.
Currently, generally use mechanical drifting mode when carrying out drifting to oil well, such as: using wirerope by weighted lever and
Gauguste cutter is sent in oil well, when drifting is hampered, using the gravity of drifting tool itself, by up and down drifting tool into
Row drifting.
However, above-mentioned drifting mode, when being hampered serious, drifting tool can not pass through, drifting be hampered the frequency height, drifting
Success rate is low.
Summary of the invention
The present invention provides a kind of drifting tool, high using the mechanical drifting mode frequency that is hampered in the prior art to solve
Problem improves drifting success rate.
The present invention provides a kind of drifting tool, comprising: upper end cover, cartridge, piston and gauguste cutter；
The drug storage chamber of perforation, the first end of the cartridge and the upper end cover are in axial direction equipped in the cartridge
Connection, the second end of the cartridge are provided with limited step, and the first end of the piston is hung in the drug storage chamber, described
Piston slides in the axial direction in the drug storage chamber, and is limited by the limited step, the second end of the piston with it is described
The first end of gauguste cutter connects；
It is provided with hollow first passage in the piston, hollow second channel is provided in the gauguste cutter, it is described
First passage is connected to the second channel, so as to be located at the indoor medicament of the drug storage along the first passage and described the
The outflow of two channels.
Optionally, the drifting tool further includes scraping drill bit, first end and the gauguste cutter of the scraping drill bit
Second end connection, the scraping drill bit are cone, are provided with medicine-pouring hole in the scraping drill bit, the medicine-pouring hole and described the
The connection of two channels, the medicine-pouring hole lead to the second end of the scraping drill bit.
Optionally, the side of the scraping drill bit is provided with blade and groove, and the blade and groove are bored along the scraping
The circumferential direction of head is spirally distributed.
Optionally, at least one medicine-pouring hole for leading to the groove is provided in the scraping drill bit.
Optionally, the second channel includes the first subchannel and the second subchannel, and the internal diameter of second subchannel is big
Be provided with valve ball and spring in the internal diameter of first subchannel, second subchannel, one end of the valve ball with it is described
The connection of first subchannel, the other end of the valve ball are connect with one end of the spring, and the other end of the spring is scraped with described
Cut the first end connection of drill bit.
Optionally, the side of the first end of the piston is provided with sealing ring.
Optionally, the upper end cover is provided with centre bore, and the side wall of the centre bore is provided with screw thread.
Optionally, the first end of the cartridge and the upper end cover be by screwed connection, the second end of the piston with
The first end of the gauguste cutter passes through silk by screwed connection, the second end of the gauguste cutter and the first end of the scraping drill bit
Button connection.
Optionally, the outer diameter of the gauguste cutter is more than or equal to the outer diameter of the cartridge, and the outer diameter of the gauguste cutter is equal to
The outer diameter of the first end of the scraping drill bit.
Optionally, the drifting tool further includes weighted lever, and the weighted lever is connect with the upper end cover.
Drifting tool provided by the invention, including upper end cover, cartridge, piston and gauguste cutter, cartridge are interior along axial side
To the drug storage chamber for being equipped with perforation, the first end of cartridge is connect with upper end cover, and the second end of cartridge is provided with limited step, living
The first end of plug is hung in drug storage chamber, and piston can in axial direction be slided in drug storage chamber, and is limited step limit,
The second end of piston and the first end of gauguste cutter connect, be provided with hollow first passage in piston, are provided in gauguste cutter
Empty second channel, and first passage is connected to second channel.Drifting is carried out using drifting tool provided by the invention
When, when drifting tool is hampered along oil well into shaft bottom motion process, the drifting tool gravity downward by itself and weighted lever
Effect, while the upward drag effect also applied by wax deposition section, so that piston upward sliding in drug storage chamber, thus drug storage
Indoor medicament is flowed downward out along first passage and second channel, is contacted with the wax deposition in oil well, plays the role of molten wax, to wax
After dissolution softens, up and down drifting tool can release and be hampered.Drifting tool provided by the invention, and it is in the prior art
Mechanical drifting mode is compared, and can be dissolved by squeezing medicament to wax deposition when drifting tool is hampered, be improved drifting success
Rate.
Detailed description of the invention
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 technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of drifting device embodiment one provided by the invention；
Fig. 2 is the structural schematic diagram of drifting device embodiment two provided by the invention；
Fig. 3 is the structural schematic diagram of scraping drill bit in drifting device embodiment two provided by the invention；
Fig. 4 is the structural schematic diagram of drifting device embodiment three provided by the invention；
Fig. 5 is the structural schematic diagram of drifting device embodiment four provided by the invention.
Description of symbols:
1: upper end cover；
11: centre bore；
2: cartridge；
21: drug storage chamber；
22: limited step；
3: piston；
31: sealing ring；
32: first passage；
4: gauguste cutter；
41: second channel；
411: the first subchannels；
412: the second subchannels；
42: valve ball；
43: spring；
44: control valve；
5: scraping drill bit；
51: medicine-pouring hole；
52: blade；
53: groove；
6: weighted lever.
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.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this
A little process, methods, the other step or units of product or equipment inherently.
As previously mentioned, oil well inner wall can generate wax deposition phenomenon in oil field development production process, wax deposition can block oil-producing
Layer reduces oil well output, while also will increase oil well load, be easy to cause production accident, therefore, it is necessary to use paraffin removal tool pair
Oil well is cleared up.Need first to carry out drifting operation before wax removal, drifting operation is that drifting tool is sent into artificial bottom of a well, is used
The passability of oil well is examined, to guarantee that paraffin removal tool can smoothly be lowered into preset well depth position during wax removal.
Currently, generally use mechanical drifting mode when carrying out drifting to oil well, such as: using wirerope by weighted lever and
Gauguste cutter is sent in oil well, when drifting is hampered, using the gravity of drifting tool itself, by up and down drifting tool into
Row drifting.
However, above-mentioned drifting mode, when being hampered serious, drifting tool can not pass through, drifting be hampered the frequency height, drifting
Success rate is low.
Drifting tool provided by the invention, including upper end cover, cartridge, piston and gauguste cutter, cartridge are interior along axial side
To the drug storage chamber for being equipped with perforation, the first end of cartridge is connect with upper end cover, and the second end of cartridge is provided with limited step, living
The first end of plug is hung in drug storage chamber, and piston can in axial direction be slided in drug storage chamber, and is limited step limit,
The second end of piston and the first end of gauguste cutter connect, be provided with hollow first passage in piston, are provided in gauguste cutter
Empty second channel, and first passage is connected to second channel.Drifting is carried out using drifting tool provided by the invention
When, when drifting tool is hampered along oil well into shaft bottom motion process, the drifting tool gravity downward by itself and weighted lever
Effect, while the upward drag effect also applied by wax deposition section, so that piston upward sliding in drug storage chamber, thus drug storage
Indoor medicament is flowed downward out along first passage and second channel, is contacted with the wax deposition in oil well, plays the role of molten wax, to wax
After dissolution softens, up and down drifting tool can release and be hampered.Drifting tool provided by the invention, and it is in the prior art
Mechanical drifting mode is compared, and can be dissolved by squeezing medicament to wax deposition when drifting tool is hampered, be improved drifting success
Rate.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the structural schematic diagram of drifting device embodiment one provided by the invention, as shown in Figure 1, the present embodiment provides
Drifting tool include: upper end cover 1, cartridge 2, piston 3 and gauguste cutter 4.
The drug storage chamber 21 of perforation is in axial direction equipped in cartridge 2, the first end of cartridge 2 is connect with upper end cover 1, is filled
The second end of cylindrantherae 2 is provided with limited step 22, and the first end of piston 3 is hung in drug storage chamber 21, and piston 3 is in drug storage chamber 21
It slides in the axial direction, and is limited the limit of step 22, the second end of piston 3 is connect with the first end of gauguste cutter 4.
It is provided with hollow first passage 32 in piston 3, hollow second channel 41 is provided in gauguste cutter 4, first is logical
Road 32 is connected to second channel 41, so that the medicament being located in drug storage chamber 21 is flowed out along first passage 32 and second channel 41.
Specifically, the drug storage chamber 21 of perforation is in axial direction equipped in cartridge 2, for placing medicament in drug storage chamber 21.
The first end of cartridge 2 is connect with upper end cover 1, and the second end of cartridge 2 and the first end of piston 3 are slidably connected, that is to say, that
The first end of piston 3 is inserted into drug storage chamber 21, and can in drug storage chamber 21 sliding axially along drug storage chamber 21, cartridge 2
Second end is provided with limited step 22, and limited step 22 is for limiting sliding of 3 first end of piston in drug storage chamber 21.Piston 3
Second end connect with the first end of gauguste cutter 4.It is provided with hollow first passage 32 in piston 3, is provided in gauguste cutter 4
Empty second channel 41, one end of first passage 32 are connected to drug storage chamber 21, the other end and second channel 41 of first passage 32
Connection flows out the medicament in drug storage chamber 21 along first passage 32 and second channel 41.
Optionally, the internal diameter of the first passage 32 is identical as the internal diameter of the second channel 41, so that in drug storage chamber 21
Medicament when being flowed out along first passage 32 and second channel 41, will not be let out from the interface of first passage 32 and second channel 41
Dew.It should be noted that the present invention is to the cross sectional shape of first passage 32 and second channel 41 and is not especially limited.
Specifically, the outer diameter of the first end of piston 3 is less than or equal to the internal diameter of drug storage chamber 21, the outer diameter of the second end of piston 3
Less than the outer diameter of the first end of piston 3, when piston 3 and cartridge 2 are attached, the second end of piston 3 can be passed through into storage
Coyote hole 21, and the outside of the second end of cartridge 2 is extended to, also, the first end of piston 3 is by the limit of the second end of cartridge 2
Position step 22 limits, thus, the first end of piston 3 can only be slided inside drug storage chamber 21 along the axial direction of drug storage chamber 21
It is dynamic.
It should be noted that the present invention is not especially limited the outer diameter of cartridge 2 and gauguste cutter 4.Optionally, gauguste cutter
4 outer diameter is more than or equal to the outer diameter of cartridge 2.It should be understood that being selected properly according to the internal diameter of oil well and drifting working specification
Gauguste cutter 4 outer diameter so that gauguste cutter 4 may be implemented to test to the passability of oil well.Due to drifting tool along
During oil well moves downward, gauguste cutter 4 is located at the lower section of cartridge 2, and the outer diameter of gauguste cutter 4 is designed as to be more than or equal to powder charge
The outer diameter of cylinder 2, can cause to damage to avoid the deformation due to oil well inner wall to cartridge 2.
It should be noted that the connection type of the first end of cartridge 2 and upper end cover 1 and the second end of piston 3 and logical
The connection type of the first end of well rule 4, is not especially limited herein.
It should be understood that needing for drifting tool and weighted lever to be sent into oil well, benefit when carrying out drifting using drifting tool
Can solve the situation that is hampered of a portion with the gravity of drifting tool and weighted lever, therefore, drifting tool be preferably provided with compared with
Big quality, optionally, the metal material that above-mentioned component can be used that density is big, performance is stable in drifting tool are made.
It should be noted that the present invention is not especially limited the space size of drug storage chamber 21, it can be according to actual job
Situation is configured, and is guaranteed that enough medicaments can be accommodated in drug storage chamber 21, can be completed the drifting operation to a bite oil well, from
And the repeated multiple times feeding drifting tool into oil well is avoided, drifting efficiency is improved, and avoid damaging oil well wall.
It should be understood that in order to avoid the medicament in drug storage chamber 21 is let out in advance along first passage 32 and second channel 41
Dew, optionally, is provided with control valve 44 in one end of the separate first passage 32 of second channel 41.When in second channel 41
When medicament is less than preset value to the pressure that control valve 44 squeezes, control valve 44 is in close state, so that medicament can not lead to
Cross the leakage of control valve 44；When the medicament in second channel 41 is more than or equal to preset value to the pressure that control valve 44 squeezes,
Control valve 44 automatically opens, so that medicament can be flowed out from control valve 44.
Optionally, the medicament is Wax dissolving agent.
The application method and principle of drifting tool provided in this embodiment are as follows: when carrying out drifting operation, first by piston 3
Second end pass through drug storage chamber 21, and the outside of the second end of cartridge 2 is extended to, so that the first end of piston 3 and cartridge 2
Second end be slidably connected, then the second end of piston 3 is connect with the first end of gauguste cutter 4, so that first passage 32 and
The connection of two channels 41.Control valve 44 is closed, to filling medicament in drug storage chamber 21, due to the medicament in second channel 41 at this time
Preset value is less than to the pressure that control valve 44 squeezes, control valve 44 is in close state.Then by upper end cover 1 and cartridge
2 first end connection, also, weighted lever is connect with upper end cover 1.
Weighted lever and drifting tool provided in this embodiment are sent in oil well using wirerope, drifting tool along
During oil well moves downward, if drifting tool encounters wax deposition section when causing to be hampered, drifting tool is by itself and weighted lever
Downward gravity, while the upward drag effect also applied by wax deposition section, so that piston 3 is upward in drug storage chamber 21
Sliding, thus medicament in drug storage chamber 21 along first passage 32 and second channel 41 to flowing down, the medicine in second channel 41
When agent is more than or equal to preset value to the pressure of the extruding of control valve 44, control valve 44 is opened, so that medicament is from control valve
44 outflows, contact with the wax deposition in oil well, play the role of molten wax, after wax deposition dissolution softens, up and down drifting tool
Releasing is hampered.
Drifting tool provided by the invention, including upper end cover 1, cartridge 2, piston 3 and gauguste cutter 4, cartridge 2 are interior along axis
The drug storage chamber 21 of perforation is equipped with to direction, the first end of cartridge 2 is connect with upper end cover 1, and the second end setting of cartridge 2 is limited
Position step 22, the first end of piston 3 are hung in drug storage chamber 21, and piston 3 can in axial direction be slided in drug storage chamber 21,
And it is limited the limit of step 22, the second end of piston 3 is connect with the first end of gauguste cutter 4, and hollow first is provided in piston 3
Channel 32 is provided with hollow second channel 41 in gauguste cutter 4, and first passage 32 is connected to second channel 41.Make
When carrying out drifting with drifting tool provided by the invention, when drifting tool is hampered along oil well into shaft bottom motion process, drifting
The tool gravity downward by itself and weighted lever, while the upward drag effect also applied by wax deposition section, so that
The upward sliding in drug storage chamber 21 of piston 3, so that the medicament in drug storage chamber 21 is downward along first passage 32 and second channel 41
Outflow, contacts with the wax deposition in oil well, plays the role of molten wax, and after wax dissolution softens, up and down drifting tool can be released
It is hampered.Drifting tool provided by the invention is hampered Shi Ketong compared with mechanical drifting mode in the prior art in drifting tool
It crosses squeezing medicament to dissolve wax deposition, improves drifting success rate.
Fig. 2 is the structural schematic diagram of drifting device embodiment two provided by the invention, as shown in Fig. 2, in above-described embodiment
On the basis of, drifting tool provided in this embodiment further includes scraping drill bit 5, first end and the gauguste cutter 4 of scraping drill bit 5
Second end connection, scraping drill bit 5 are cone, and medicine-pouring hole 51 is provided in scraping drill bit 5, and medicine-pouring hole 51 and second channel 41 connect
Logical, medicine-pouring hole 51 leads to the second end of scraping drill bit 5.
As shown in Fig. 2, scraping drill bit 5 is cone, the first end of scraping drill bit 5 connect with the second end of gauguste cutter 4, scrapes
The second end for cutting drill bit 5 is the vertex of cone.When drifting tool provided in this embodiment is hampered, drifting tool is in wax deposition section
Under drag effect, the upward sliding in drug storage chamber 21 of piston 3, the medicament in drug storage chamber 21 is along first passage 32 and second channel
41 enter medicine-pouring hole 51, and then medicament is flowed out along medicine-pouring hole 51, is contacted with wax deposition, is played the role of molten wax.
In the present embodiment, the second end of the scraping drill bit 5 of drifting tool is contacted with wax deposition section, due to scraping drill bit 5
Second end be cone vertex, compare above-described embodiment, the contact area with wax deposition is reduced, to increase drifting work
Has the pressure to wax deposition section, it is easier to dredge wax deposition section.
Fig. 3 is the structural schematic diagram of scraping drill bit in drifting device embodiment two provided by the invention, as shown in figure 3, scraping
The side for cutting drill bit 5 is provided with blade 52 and groove 53, and blade 52 and groove 53 divide in the shape of a spiral along the circumferential direction of scraping drill bit 5
Cloth.
It should be understood that by the way that blade 52 and groove 53 is arranged in the side of scraping drill bit 5, so that the drifting tool is hampered
When, the end face of the wax deposition in oil well can be destroyed by blade 52 and groove 53, so that the contact area of wax deposition and medicament is increased,
So that medicament comes into full contact with wax deposition, molten wax effect is promoted.
Optionally, as shown in figure 3, being provided at least one medicine-pouring hole 51 for leading to groove 53 in scraping drill bit 5.
It should be understood that as shown in figure 3, there is a plurality of groove 53 in the side of scraping drill bit 5, by setting in scraping drill bit 5
Multiple medicine-pouring holes 51 for leading to groove 53 are set, so that distributed multiple medicine-pouring holes 51 on the side of scraping drill bit 5, so that medicament is logical
When crossing the outflow of medicine-pouring hole 51, all directions around scraping drill bit 5 have medicament outflow, to further increase medicament and knot
The contact area of wax improves molten wax effect.
Optionally, the first end of cartridge 2 and upper end cover 1 pass through screwed connection, second end and the gauguste cutter 4 of piston 3
First end passes through screwed connection by screwed connection, the second end of gauguste cutter 4 and the first end of scraping drill bit 5.
In the present embodiment, by screwed connection between the various pieces of drifting tool so that between various pieces disassembly and
It is easy to assembly, improve drifting efficiency.
Optionally, as shown in Fig. 2, second channel includes the first subchannel 411 and the second subchannel 412, the second subchannel
412 internal diameter is greater than the internal diameter of the first subchannel 412, is provided with valve ball 42 and spring 43 in the second subchannel 412, valve ball 42
One end is connect with the first subchannel 411, and the other end of valve ball 42 is connect with one end of spring 43, the other end of spring 43 and scraping
The first end of drill bit 5 connects.
Specifically, the internal diameter of the second subchannel 412 is greater than the internal diameter of the first subchannel 412, including the second subchannel 412
The cross sectional shape situation different from the cross sectional shape of the first subchannel 411, such as: the section of the first subchannel 411 is circle, the
The section of two subchannels 412 is square.It should be noted that the present invention is to the first subchannel 411 and the second subchannel 412
Shape is not especially limited, and above are only exemplary illustration.
It should be understood that setting valve ball 42 and spring 43, valve ball 42 and spring 43 play figure in the second subchannel 412
The effect of control valve 44 in 1 illustrated embodiment.That is, the first end of scraping drill bit 5 can when drifting tool is not hampered
Holddown spring 43 and valve ball 42, so that valve ball 42 blocks the first subchannel 411, so that medicament can not be from the first subchannel 411
Outflow.When drifting tool is hampered, the upward sliding in drug storage chamber 21 of piston 3, so that the medicament in drug storage chamber 21 is along first
Channel 32 and the first subchannel 411 are to flowing down, when pressure of the medicament in the first subchannel 411 to the extruding of valve ball 42 is greater than in advance
If opening valve ball 42 when value, spring 43 is compressed, so that medicament is flowed out along the second subchannel 412 and medicine-pouring hole 51, with oil well
In wax deposition section contact, play the role of molten wax.When be hampered release when, wax deposition section disappears to the resistance of drifting tool, thus spring
43 rebound nature, and valve ball 42 blocks the first subchannel 411 again, so that medicament can not be flowed out from the first subchannel 411.
It should be understood that the outer diameter of valve ball 42 is greater than the internal diameter of the first subchannel 411, it is less than or equal to the second subchannel 412
Internal diameter, to can realize that when not being hampered, valve ball 42 blocks the first subchannel 411, when being hampered, medicament can open valve ball 42 simultaneously
The second subchannel 412 is flowed out to along the surface of valve ball 42.
In the present embodiment, by the way that valve ball 42 and spring 43 are arranged in the second subchannel 412, letting out in advance for medicament is avoided
Dew, that is, when drifting tool is not hampered, valve ball 42 blocks the first subchannel 411, so that medicament can not be from the first subchannel 411
Middle outflow, when drifting tool is hampered, medicament in drug storage chamber 21 along first passage 32 and the first subchannel 411 to flowing down,
And valve ball 42 is opened, spring 43 is compressed, so that medicament is flowed out along the second subchannel 411 and medicine-pouring hole 51, in oil well
Wax deposition section contact, play the role of molten wax.
Fig. 4 is the structural schematic diagram of drifting device embodiment three provided by the invention, as shown in figure 4, in above-described embodiment
On the basis of, the side of the first end of piston 3 is provided with sealing ring 31.
In the present embodiment, sealing ring 31, the first end and storage of piston 3 are provided with by the side of the first end in piston 3
The space of the composition sealing of coyote hole 21, avoids the leakage of medicament in drug storage chamber 21.
Optionally, upper end cover 1 is provided with centre bore 11, and the side wall of centre bore 11 is provided with screw thread.
Specifically, being provided centrally with centre bore 11 in upper end cover 1, allow through centre bore 11 in drug storage chamber 21
Inject medicament.By the side wall in centre bore 11, screw thread is set, so that upper end cover 1 and weighted lever 1 can be connected through a screw thread, it is convenient
Drifting tool removes and installs.
Optionally, the outer diameter of gauguste cutter 4 is more than or equal to the outer diameter of cartridge 2, and the outer diameter of gauguste cutter is equal to scraping drill bit 5
The outer diameter of first end.
It should be understood that the outer diameter of suitable gauguste cutter 4 is selected according to the internal diameter of oil well and drifting working specification, so that logical
Well rule 4 may be implemented to test to the passability of oil well.Due to during drifting tool is moved downward along oil well, drifting
Rule 4 are located at the lower sections of cartridge 2, and the outer diameter of gauguste cutter 4 is designed as the outer diameter more than or equal to cartridge 2, can to avoid due to
The deformation of oil well inner wall damages cartridge 2.
The application method and principle of drifting tool provided in this embodiment are as follows: when carrying out drifting operation, first by piston 3
Second end pass through drug storage chamber 21, and the outside of the second end of cartridge 2 is extended to, so that the first end of piston 3 and cartridge 2
Second end be slidably connected, then by the first end of the second end of piston 3 and gauguste cutter 4 by screwed connection, so that first is logical
Road 32 is connected to the first subchannel 411, valve ball 42 and spring 43 is placed in the second subchannel 412, by the first of scraping drill bit 5
End passes through screwed connection by screwed connection, and by the first end of upper end cover 1 and cartridge 2 with the second subchannel 412.By upper
The centre bore 11 of end cap 1 is to filling medicament in drug storage chamber 21, due to the first end holddown spring 43 and valve ball of scraping drill bit 5 at this time
42, valve ball 42 blocks the first subchannel 411, and medicament can not be revealed in advance by the first subchannel 411.Finally, by weighted lever with
Upper end cover 1 connects.
Weighted lever and drifting tool provided in this embodiment are sent in oil well using wirerope, drifting tool along
During oil well moves downward, if drifting tool encounters wax deposition section when causing to be hampered, drifting tool is by itself and weighted lever
Downward gravity, while the upward drag effect also applied by wax deposition section, so that piston 3 is upward in drug storage chamber 21
Sliding, thus medicament in drug storage chamber 21 along first passage 32 and the first subchannel 411 to flowing down, when the first subchannel 411
When interior medicament is more than or equal to preset value to the pressure of the extruding of valve ball 42, valve ball 42 is opened, and spring 43 is in compressive state,
So that medicament flows into the second subchannel 412 and medicine-pouring hole 51 along the surface of valve ball, and flows out from medicine-pouring hole 51, in oil well
Wax deposition contact, plays the role of molten wax, and after wax deposition dissolution softens, up and down drifting tool can release and be hampered.When the solution that is hampered
Except when, wax deposition section disappears to the resistance of drifting tool, the nature so that spring 43 rebounds, and valve ball 42 block the first son again and leads to
Road 411, so that medicament can not be flowed out from the first subchannel 411.
Fig. 5 is the structural schematic diagram of drifting device embodiment four provided by the invention, as shown in figure 5, in above-described embodiment
On the basis of, drifting tool provided in this embodiment further includes weighted lever 6, and weighted lever 6 is connect with upper end cover 1.
It should be understood that, by including weighted lever 6 in drifting tool, drifting tool can be made to have in the present embodiment
There is biggish quality, when being hampered in shaft bottom motion process of the drifting tool to oil well, drifting tool is made by the gravity of itself
With, while the upward drag effect also applied by wax deposition section, so that piston upward sliding in drug storage chamber, thus drug storage chamber
Interior medicament is flowed downward out along first passage and second channel, is contacted with the wax deposition in oil well, and molten wax is played the role of, molten to wax
After solution softens, up and down drifting tool further improves drifting success rate since drifting tool has biggish gravity.
In the description of description of the invention, it is to be understood that term " inner sidewall ", " bottom end ", " lateral wall " etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplifies
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, used term " center ", " length ", " width ", " thickness
Degree ", " top ", " bottom end ", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outside" " axis
To ", the indicating positions such as " circumferential direction " or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing
The present invention and simplified description, rather than the position of indication or suggestion meaning or original part must have a particular orientation, with specific
Construction and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
It shall be understood in a broad sense, such as may be a fixed connection, may be a detachable connection, or be integrally formed；It can be mechanical connection,
It is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
Make the connection inside two elements or the interaction relationship of two elements.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
In the description of description of the invention, it is to be understood that term " some embodiments ", " one embodiment ", " another
The description of one embodiment " etc. means that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example include
In at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms necessarily needle
Pair be identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any one
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, those skilled in the art can will be in this specification
The different embodiments or examples of description are engaged and are combined.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of drifting tool characterized by comprising upper end cover, cartridge, piston and gauguste cutter；
The drug storage chamber of perforation is in axial direction equipped in the cartridge, the first end of the cartridge and the upper end cover connect
It connects, the second end of the cartridge is provided with limited step, and the first end of the piston is hung in the drug storage chamber, the work
Plug slides in the axial direction in the drug storage chamber, and is limited by the limited step, and the second end of the piston is led to described
The first end connection of well rule；
It is provided with hollow first passage in the piston, is provided with hollow second channel in the gauguste cutter, described first
Channel is connected to the second channel, is led to so as to be located at the indoor medicament of the drug storage along the first passage and described second
Road outflow.
2. drifting tool according to claim 1, which is characterized in that it further include scraping drill bit, the of the scraping drill bit
One end is connect with the second end of the gauguste cutter, and the scraping drill bit is cone, is provided with medicine-pouring hole in the scraping drill bit,
The medicine-pouring hole is connected to the second channel, and the medicine-pouring hole leads to the second end of the scraping drill bit.
3. drifting tool according to claim 2, which is characterized in that the side of the scraping drill bit is provided with blade and recessed
Slot, the blade and groove are spirally distributed along the circumferential direction of the scraping drill bit.
4. drifting tool according to claim 3, which is characterized in that be provided at least one in the scraping drill bit and lead to
The medicine-pouring hole of the groove.
5. drifting tool according to claim 4, which is characterized in that the second channel includes the first subchannel and second
Subchannel, the internal diameter of second subchannel are greater than the internal diameter of first subchannel, are provided with valve in second subchannel
Ball and spring, one end of the valve ball are connect with first subchannel, one end of the other end of the valve ball and the spring
Connection, the other end of the spring are connect with the first end of the scraping drill bit.
6. drifting tool according to claim 5, which is characterized in that the side of the first end of the piston is provided with sealing
Circle.
7. drifting tool according to claim 6, which is characterized in that the upper end cover is provided with centre bore, the center
The side wall in hole is provided with screw thread.
8. drifting tool according to claim 2, the first end of the cartridge and the upper end cover pass through screwed connection,
The second end of the piston and the first end of the gauguste cutter pass through screwed connection, the second end of the gauguste cutter and the scraping
The first end of drill bit passes through screwed connection.
9. drifting tool according to claim 2, which is characterized in that the outer diameter of the gauguste cutter is more than or equal to the powder charge
The outer diameter of cylinder, the outer diameter of the gauguste cutter are equal to the outer diameter of the first end of the scraping drill bit.
10. -9 described in any item drifting tools according to claim 1, which is characterized in that it further include weighted lever, the weighted lever
It is connect with the upper end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098669.7A CN110094184B (en) | 2018-01-31 | 2018-01-31 | Pigging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098669.7A CN110094184B (en) | 2018-01-31 | 2018-01-31 | Pigging tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110094184A true CN110094184A (en) | 2019-08-06 |
| CN110094184B CN110094184B (en) | 2024-03-01 |
Family
ID=67443384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810098669.7A Active CN110094184B (en) | 2018-01-31 | 2018-01-31 | Pigging tool |
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| Country | Link |
|---|---|
| CN (1) | CN110094184B (en) |
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| RU2142553C1 (en) * | 1995-07-25 | 1999-12-10 | ООО "ЛУКОЙЛ-Западная Сибирь" Нефтяной компании "ЛУКОЙЛ" | Plant for proportioning supply of chemical agent to cluster wells and chemical agent proportioner |
| CN201521273U (en) * | 2009-10-20 | 2010-07-07 | 大庆石油管理局 | Encountering resistance drifting device adopting acoustic variable density logging method |
| US20130180592A1 (en) * | 2011-09-12 | 2013-07-18 | Baker Hughes Incorporated | Valve for Use in Chemical Injectors and the Like |
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| CN204591217U (en) * | 2014-12-31 | 2015-08-26 | 九环机械股份有限公司 | Ternary composite drive well scraper device |
| CN206636545U (en) * | 2017-03-27 | 2017-11-14 | 中国石油化工股份有限公司 | Oil well hydrodynamic force proportion adjustment chemicals feeder |
| CN107387024A (en) * | 2017-07-18 | 2017-11-24 | 中国石油天然气股份有限公司 | Hollow sucker rod shaft dosing device and shaft dosing method |
| CN207934866U (en) * | 2018-01-31 | 2018-10-02 | 中国石油天然气股份有限公司 | Drifting tool |
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2018
- 2018-01-31 CN CN201810098669.7A patent/CN110094184B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2142553C1 (en) * | 1995-07-25 | 1999-12-10 | ООО "ЛУКОЙЛ-Западная Сибирь" Нефтяной компании "ЛУКОЙЛ" | Plant for proportioning supply of chemical agent to cluster wells and chemical agent proportioner |
| CN201521273U (en) * | 2009-10-20 | 2010-07-07 | 大庆石油管理局 | Encountering resistance drifting device adopting acoustic variable density logging method |
| US20130180592A1 (en) * | 2011-09-12 | 2013-07-18 | Baker Hughes Incorporated | Valve for Use in Chemical Injectors and the Like |
| CN204591217U (en) * | 2014-12-31 | 2015-08-26 | 九环机械股份有限公司 | Ternary composite drive well scraper device |
| CN204419122U (en) * | 2015-01-30 | 2015-06-24 | 中石化石油工程技术服务有限公司 | A kind of coiled tubing rotates drifting device |
| CN206636545U (en) * | 2017-03-27 | 2017-11-14 | 中国石油化工股份有限公司 | Oil well hydrodynamic force proportion adjustment chemicals feeder |
| CN107387024A (en) * | 2017-07-18 | 2017-11-24 | 中国石油天然气股份有限公司 | Hollow sucker rod shaft dosing device and shaft dosing method |
| CN207934866U (en) * | 2018-01-31 | 2018-10-02 | 中国石油天然气股份有限公司 | Drifting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110094184B (en) | 2024-03-01 |
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