CN206376769U - A kind of drifting sand flushing tool - Google Patents
A kind of drifting sand flushing tool Download PDFInfo
- Publication number
- CN206376769U CN206376769U CN201621426398.6U CN201621426398U CN206376769U CN 206376769 U CN206376769 U CN 206376769U CN 201621426398 U CN201621426398 U CN 201621426398U CN 206376769 U CN206376769 U CN 206376769U
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- Prior art keywords
- drifting
- sand
- tubular
- top connection
- tubing string
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Abstract
The utility model discloses a kind of drifting sand flushing tool, belong to oil equipment field.The drifting sand flushing tool includes：Gauguste cutter and sand washing head；Gauguste cutter includes：The tubular body that top connection that upper end is connected with the lower end of drifting tubing string, upper end are connected with top connection lower end；Sand washing head is latus rectum tubular structure, including tubular type body and is arranged on the pointed ends of tubular type body lower end；Tubular type body is set in tubular body, and upper end is connected with top connection；Pointed ends are located at outside tubular body.Drifting tubing string, gauguste cutter and sand washing head are connected in rear tripping in sleeve pipe, the power of drifting tubing string is above put forward when being whether there is in sleeve pipe by sensing gauguste cutter and be hampered and be hampered whether increases and can determine whether whether sleeve pipe deforms.When in drifting tubing string decentralization process due to sand setting is hampered when, it is that can proceed with drifting operation to carry out anti-sand washing operation.So, it is only necessary to which drifting, two operations of sand washing can be completed by removing a drifting tubing string, shorten construction period.
Description
Technical field
The utility model is related to oil equipment field, more particularly to a kind of drifting sand flushing tool.
Background technology
With the long-term exploitation of oil well, down-hole casing inwall can be deformed, and the problem of undergauge occur is adopted to follow-up tripping in
Oily workover tool and the tool of production produce obstruction, influence the normal production of oil well.Also, oil well is exploited also inevitably for a long time
After the problem of shaking out, sand production, if the liquid stream in well will can not shake out, whole bands are to ground, and sand will be gradually in well
Precipitation, forms sand post, and then blocks oil discharge passage, increases flow resistance, makes the oil well underproduction or stopping production.Therefore, in order to ensure oil
The normal production of well, it is necessary to drifting detection (whetheing there is deformation to down-hole casing to detect) is carried out to oil well and sand washing (is removed
Sand setting in well).
Prior art carries out drifting detection by using gauguste cutter, and gauguste cutter is hollow cylindrical structure, is generally comprised：Pipe
Shape body, the top connection being connected with the tubular body upper end.Using when, top connection is connected with the lower end of drifting tubing string
(drifting tubing string refers to sequentially connecting the tubing string constituted by multiple oil pipes for carry out drifting operation), then by drifting tubing string
In tripping in down-hole casing, gauguste cutter is reached desired depth or artificial bottom of a well, during which, whether there is by sensing gauguste cutter in sleeve pipe
Above carry whether the power of drifting tubing string increases the i.e. achievable detection that deformation is whether there is to sleeve pipe (when gauguste cutter exists when being hampered and being hampered
When decentralization is hampered in sleeve pipe, drifting tubing string is above carried, if the power increase now above carried, it is because sleeve pipe becomes that just explanation sleeve pipe, which is hampered,
Caused by shape.If the power above carried is constant, it is because caused by the sand setting of underground to illustrate that sleeve pipe is hampered).During drifting, often
Because the sand setting of underground causes drifting operation to be hampered, sand washing operation is carried out at this time, it may be necessary to above carry drifting tubing string and transfer sand-flushing pipe column
(sand-flushing pipe column refers to sequentially connecting the tubing string constituted by multiple oil pipes for carry out sand washing operation), the sand setting of underground is arranged
Go out to ground.Specifically, sand washing head (generally hollow cylindrical structure) is communicated with the lower end of sand-flushing pipe column, by sand-flushing pipe column
In tripping in sleeve pipe, make under sand washing head to artificial bottom of a well, then carry out positive sand washing operation and (sand cleaning fluid is pumped into sand clean out pipe from ground
In the inner chamber of post and sand washing head, sand cleaning fluid is quickly moved down, discharged from the bottom of sand washing head, the sand setting of underground is broken up,
The sand setting and sand cleaning fluid that are broken up is set to be mixed to form mulling solution, and along sand-flushing pipe column and the oil jacket annular space of sleeve pipe formation from lower
On drain into ground), you can complete to whether there is sleeve pipe the detection of deformation and the processing to making sand setting that drifting is obstructed.
Designer has found that prior art at least has problems with：
Prior art is needed to remove tubing string twice, and drifting and the operation of sand washing two-phase, long construction period, production effect are carried out respectively
Rate is low.
Utility model content
The utility model embodiment technical problem to be solved is to only need to remove one-trip string there is provided one kind,
And short construction period, the high drifting sand flushing tool of production efficiency.Concrete technical scheme is as follows：
A kind of drifting sand flushing tool, including gauguste cutter and sand washing head；
The gauguste cutter includes：Under top connection, upper end and the top connection that upper end is connected with the lower end of drifting tubing string
Hold the tubular body being connected；
The sand washing head is latus rectum tubular structure, including tubular type body and is arranged on the nib shape of the tubular type body lower end
End；
The tubular type body is set in the tubular body, and upper end is connected with the top connection；
Described pointed ends are located at outside the tubular body.
Specifically, preferably, the top connection is sleeved on outside the tubular type body upper end with thread connecting mode.
Specifically, preferably, the tubular body is sleeved on outside the top connection lower end with thread connecting mode.
Specifically, preferably, the external diameter of the tubular body is 115-120mm, length is 1400-1600mm；
The external diameter of the tubular type body is 70-75mm, and length is 1500-1700mm；
The length of described pointed ends is 150-250mm.
Specifically, preferably, the wall thickness of the tubular body is 5-7mm.
Specifically, preferably, the tube length that the tubular type body is located at outside the tubular body is 80-120mm.
Specifically, preferably, being provided with least one in gap between the tubular body and the tubular type body
Individual sealing ring.
Specifically, preferably, being provided with internal thread on the inwall of the top connection upper end.
Specifically, preferably, the diameter of the top connection upper lumen is gradually reduced from top to bottom.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The drifting sand flushing tool that the utility model embodiment is provided, by by drifting tubing string, top connection, tubular body from upper
And under sequentially (wherein, the tubular type body of sand washing head is set in tubular body) in connection and tripping in down-hole casing, until most lower
The pointed ends at end reach artificial bottom of a well or desired depth, during which, by sense gauguste cutter whether there is in sleeve pipe be hampered and
Above carry whether the power of drifting tubing string increases the i.e. achievable detection that deformation is whether there is to sleeve pipe (under gauguste cutter is in sleeve pipe when being hampered
Put when being hampered, above carry drifting tubing string, if the power increase now above carried, just explanation sleeve pipe is hampered because casing deformation causes
's.If the power above carried is constant, it is because caused by the sand setting of underground to illustrate that sleeve pipe is hampered).Because the sand setting of underground easily makes
It is hampered during tripping in drifting tubing string, at this point it is possible to which carry out anti-sand washing operation by sand washing head (is pumped into drifting by sand cleaning fluid from ground
Tubing string, will be heavy to produce stronger impulsive force to sand setting with the oil jacket annular space of sleeve pipe formation, making sand cleaning fluid quickly move down
Sand breaks up, and makes the sand setting that is broken up and sand cleaning fluid formation mulling solution, enters from the bottom of a pointed ends, and along sand washing head and
Drifting tubing string connects formed inner chamber and drains into ground), drifting operation is then proceeded with, until drifting is completed.In this way, protecting
While card oil well is normally produced, it is only necessary to which drifting, two operations of sand washing can be completed by playing next time drifting tubing string, shortened and applied
The work cycle, and then improve the production efficiency of oil well.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the diagrammatic cross-section for the drifting sand flushing tool that the utility model embodiment is provided.
Reference is represented respectively：
1 gauguste cutter,
101 top connections,
102 tubular bodies,
2 sand washing heads,
201 tubular type bodies,
202 pointed ends.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
The utility model embodiment provides a kind of drifting sand flushing tool, as shown in figure 1, the drifting sand flushing tool includes leading to
Well rule 1 and sand washing head 2；Wherein, gauguste cutter 1 includes：Top connection 101 that upper end is connected with the lower end of drifting tubing string, upper end with
The tubular body 102 that the lower end of top connection 101 is connected；Sand washing head 2 be latus rectum tubular structure, including tubular type body 201 and set
A pointed ends 202 in the lower end of tubular type body 201；Tubular type body 201 is set in tubular body 102, upper end and top connection
101 connections；Pointed ends 202 are located at outside tubular body 102.
It is understood that the gap after under the lower going-into-well of tubular body 102 between sleeve pipe is common for this area,
Typically between 3-5mm.
The operation principle for the drifting sand flushing tool that the utility model embodiment is provided is as described below：
Drifting tubing string, top connection 101, tubular body 102 are sequentially connected and (its in tripping in down-hole casing from top to bottom
In, the tubular type body 201 of sand washing head 2 is set in tubular body 102), until a pointed ends 202 for bottom are reached manually
Shaft bottom or desired depth, during which, above put forward the power of drifting tubing string when being whether there is in sleeve pipe by sensing gauguste cutter 1 and be hampered and be hampered
Whether increase, which is the achievable detection that deformation is whether there is to sleeve pipe, (when gauguste cutter 1 is transferred in sleeve pipe to be hampered, above carries drifting pipe
Post, if the power increase now above carried, it is because caused by casing deformation that just explanation sleeve pipe, which is hampered,.If the power above carried is constant,
It is because caused by the sand setting of underground then to illustrate that sleeve pipe is hampered).Because the sand setting of underground easily makes to be hampered during tripping in drifting tubing string, this
When, anti-sand washing operation can be carried out by sand washing head 2 and (sand cleaning fluid is pumped into drifting tubing string and the oil jacket of sleeve pipe formation from ground
In annular space, sand cleaning fluid is quickly moved down, to produce stronger impulsive force to sand setting, sand setting is broken up, make that is broken up to sink
Sand and sand cleaning fluid formation mulling solution, enter from the bottom of a pointed ends 202, institute's shape are connected with drifting tubing string along sand washing head 2
Into inner chamber drain into ground), then proceed with drifting operation.In this way, while ensureing that oil well is normally produced, it is only necessary to rise
Next time drifting tubing string can complete drifting, two operations of sand washing, shorten construction period, and then improve the production effect of oil well
Rate.
Wherein, the structure of sand washing head 2 can be a variety of, for example, can be hollow cylindrical structure, hollow round table shape
Structure etc., as long as meeting diameter is less than the diameter of gauguste cutter 1, and can connect to form cavity, to pass through mulling with gauguste cutter 1
Solution.In addition, it will be appreciated by persons skilled in the art that sand cleaning fluid refers to the liquid for releasing sand plug, often at present
Sand cleaning fluid type has oil, water, emulsion and vaporization liquid etc..
In the utility model embodiment, by the way that sand washing head 2 is set in tubular body 102, and make its upper end with it is upper
The lower end of joint 101 is connected, and sand washing head 2 is passed through the top connection after tubular body 102 directly with the upper end of tubular body 102
101 connections, in sand washing, the sand setting and the mulling solution of sand cleaning fluid formation of underground enter from the bottom of sand washing head 2, sequentially flow through
Sand washing head 2, top connection 101, drifting tubing string are expelled to ground after connecting formed inner chamber, now, gauguste cutter 1 and sand washing head 2
It is interior be used to be consistent by the latus rectum of the passage of mulling solution, it is to avoid sand setting is due to gauguste cutter 1 and sand washing during sand washing
There is reducing (diameter is different) between first 2 and occur blocking phenomenon.
In addition, sand washing head 2 is latus rectum tubular structure, including tubular type body 201 and it is arranged on the lower end of tubular type body 201
Pointed ends 202, and a pointed ends 202 are located at the outside of tubular body 102.By in the lower end of tubular type body 201
(connected mode between tubular type body 201 and a pointed ends 202 can have a variety of to a fixed pointed ends 202, and citing comes
Say, both can be linked together by way of welding, directly both can also be processed as one), make the bottom of sand washing head 2
Portion is pointed, and positioned at the outside of tubular body 102, some unsubstantial sand settings, and energy can be broken up when tripping in sand washing head 2
Enough prevent because maloperation makes drifting tubing string lowering velocity is too fast to cause to suppress pump (if the bottom of sand washing head 2 is not pointed but flat
Planar, when drifting tubing string lowering velocity is too fast runs into underground sand setting, sand setting is easy to block the plane bottom of sand washing head 2,
In turn result in and suppress pump).It is understood that the shape of a pointed ends 202 is similar to the shape of the nib of common pen, tip
Down (being shaped as right angled triangle of section).
Further, top connection 101 is sleeved on outside the upper end of tubular type body 201 with thread connecting mode.Tubular type body 201
It is threadedly coupled with top connection 101.So, it is ensured that top connection 101 is connected fastening with tubular type body 201, while easy to disassemble,
Need to change very convenient during sand washing head 2.Wherein, external screw thread, top connection 201 are provided with the outer wall of the upper end of tubular type body 201
The internal thread being adapted with the external screw thread is provided with the inwall of lower end.
In the utility model embodiment, tubular body 102 is sleeved on outside the lower end of top connection 101 with thread connecting mode
Portion.So, it is ensured that tubular body 102 is connected fastening with top connection 101, while easy to disassemble, when needing to change tubular body
102 or during top connection 101 it is very convenient.Wherein, it is provided with the outer wall of the lower end of top connection 101 on external screw thread, tubular body 102
The internal thread being adapted with the external screw thread is provided with the inwall at end, the screw thread specification of top connection 101 is preferably 27/8TBG.
In the utility model embodiment, the external diameter of tubular body 102 is 115-120mm, and length is 1400-1600mm.
For example, preferably, the external diameter of tubular body 102 is 118mm, length is 1500mm.By by outside tubular body 102
Footpath is set to 118mm, and the gap after making under tubular body 102 and lower going-into-well between sleeve pipe is smaller, is easy to detection sleeve pipe to have
Without deformation；By the way that the length of tubular body 102 is set into 1500mm, it is ensured that tubular body 102 has certain length, detection
Scope is larger when sleeve pipe whether there is deformation, very convenient.In addition, the external diameter of sand washing head 2 is 70-75mm；The length of tubular type body 201
For 1500-1700mm, the length of a pointed ends 202 is 150-250mm.Preferably, the external diameter of sand washing head 2 is 73mm, pipe
The length of formula body 201 is 1600mm, and the length of a pointed ends 202 is 200mm (it is understood that now sand washing head 2
Length is 1800mm).By being arranged such, it is ensured that tubular type body 201 is located in tubular body 102, a pointed ends 202
In the outside of tubular body 102, and tubular body 102 differs larger with the external diameter of sand washing head 2, makes sand washing head 2 in sediment outflow
Speed, sediment outflow effect is preferable.
Further, the wall thickness of tubular body 102 is 5-7mm (wall thickness is preferably 6mm).By being arranged such, when logical
Well advise 1 decentralization process in occur bit freezing phenomenon when, can increase unfreezing possibility (occur bit freezing phenomenon when, wall thickness is relatively thin
Tubular body 102 can be made to be deformed by external compression, it is easier to propose gauguste cutter 1 upwards, realize unfreezing).
In the utility model embodiment, the tube length that tubular type body 201 is located at outside tubular body 102 is 80-
120mm (for example, the length is preferably 100mm).By being arranged such, ensureing the nib shape end of the lower end of tubular body 1
While portion 202 is more smooth when carrying out sand washing operation, circulation of the mulling solution in gauguste cutter 1 and sand washing head 2 is added
Distance, accelerates sediment outflow speed, and then improve production efficiency.
Further, in order to ensure the sealing between tubular body 102 and tubular type body 201, tubular body 102 with
At least one sealing ring is provided with gap between tubular type body 201, for example, can for one, two, three, five
It is individual etc..Specifically, when installing sealing ring, at least one circle groove is opened up on the inwall of tubular body 102, should for accommodating
Sealing ring, then connects tubular type body 201 through tubular body 102 with top connection 101, so realize tubular body 102 with
Sealing between tubular type body 201.
In the utility model embodiment, internal thread is provided with the inwall of the upper end of top connection 101；Wherein, drifting tubing string
The external screw thread being adapted with the internal thread is provided with the outer wall of lower end, top connection 101 is threadedly coupled with drifting tubing string.It ensure that
The tightness that top connection 101 is connected with drifting tubing string, it is very convenient when drifting tubing string lower end installs or removes top connection 101.
Further, preferably, the diameter of the upper end inwall of top connection 101 is gradually reduced from top to bottom.By so setting
Put, making the inwall of the upper end of top connection 101 has certain taper, it is to be understood that the structure of drifting tubing string lower end and top connection
101 are adapted, and are threadedly coupled based on above-mentioned top connection 101 with drifting tubing string, by by the diameter of the upper end inwall of top connection 101
It is arranged to be gradually reduced from top to bottom, top connection 101 can be made to be connected with drifting tubing string and from top to bottom increasingly fastened, make to connect
There is preferable sealing between first 101 and drifting tubing string, the mulling solution that sand cleaning fluid is formed with underground sand setting during sand washing is prevented
Leaked in drifting tubing string and the junction of top connection 101.
Preferred embodiment of the present utility model is the foregoing is only, not to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (9)
1. a kind of drifting sand flushing tool, it is characterised in that the drifting sand flushing tool includes gauguste cutter (1) and sand washing head (2)；
The gauguste cutter (1) includes：Top connection (101) that upper end is connected with the lower end of drifting tubing string, upper end with it is described on connect
The tubular body (102) that head (101) lower end is connected；
The sand washing head (2) is latus rectum tubular structure, including tubular type body (201) and is arranged under the tubular type body (201)
A pointed ends (202) at end；
The tubular type body (201) is set in the tubular body (102), and upper end is connected with the top connection (101)；
It is outside that described pointed ends (202) is located at the tubular body (102).
2. drifting sand flushing tool according to claim 1, it is characterised in that the top connection (101) is with the side of threaded connection
Formula is sleeved on outside tubular type body (201) upper end.
3. drifting sand flushing tool according to claim 2, it is characterised in that the tubular body (102) is with threaded connection
Mode is sleeved on outside the top connection (101) lower end.
4. drifting sand flushing tool according to claim 1, it is characterised in that the external diameter of the tubular body (102) is
115-120mm, length is 1400-1600mm；
The external diameter of the tubular type body (201) is 70-75mm, and length is 1500-1700mm；
The length of described pointed ends (202) is 150-250mm.
5. drifting sand flushing tool according to claim 4, it is characterised in that the wall thickness of the tubular body (102) is 5-
7mm。
6. drifting sand flushing tool according to claim 4, it is characterised in that the tubular type body (201) is located at the pipe
The outside tube length of shape body (102) is 80-120mm.
7. drifting sand flushing tool according to claim 1, it is characterised in that in the tubular body (102) and the pipe
At least one sealing ring is provided with gap between formula body (201).
8. drifting sand flushing tool according to claim 1, it is characterised in that on the inwall of top connection (101) upper end
It is provided with internal thread.
9. drifting sand flushing tool according to claim 8, it is characterised in that top connection (101) upper lumen it is straight
Footpath is gradually reduced from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426398.6U CN206376769U (en) | 2016-12-23 | 2016-12-23 | A kind of drifting sand flushing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426398.6U CN206376769U (en) | 2016-12-23 | 2016-12-23 | A kind of drifting sand flushing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206376769U true CN206376769U (en) | 2017-08-04 |
Family
ID=59407733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426398.6U Active CN206376769U (en) | 2016-12-23 | 2016-12-23 | A kind of drifting sand flushing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206376769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469453A (en) * | 2018-09-19 | 2019-03-15 | 中国石油天然气股份有限公司 | Sand washing drifting method |
| CN112761555A (en) * | 2019-11-04 | 2021-05-07 | 中国石油天然气股份有限公司 | Drifting, well washing and sand washing integrated downhole operation tool and operation method |
-
2016
- 2016-12-23 CN CN201621426398.6U patent/CN206376769U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469453A (en) * | 2018-09-19 | 2019-03-15 | 中国石油天然气股份有限公司 | Sand washing drifting method |
| CN109469453B (en) * | 2018-09-19 | 2021-03-30 | 中国石油天然气股份有限公司 | Sand washing well dredging method |
| CN112761555A (en) * | 2019-11-04 | 2021-05-07 | 中国石油天然气股份有限公司 | Drifting, well washing and sand washing integrated downhole operation tool and operation method |
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