CN208473740U - Horizontal well sand washing pen point - Google Patents
Horizontal well sand washing pen point Download PDFInfo
- Publication number
- CN208473740U CN208473740U CN201820947997.5U CN201820947997U CN208473740U CN 208473740 U CN208473740 U CN 208473740U CN 201820947997 U CN201820947997 U CN 201820947997U CN 208473740 U CN208473740 U CN 208473740U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- horizontal well
- spray head
- central tube
- sand washing
- 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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- 239000004576 sand Substances 0.000 title claims abstract description 93
- 238000005406 washing Methods 0.000 title claims abstract description 77
- 239000007921 spray Substances 0.000 claims abstract description 75
- 230000002093 peripheral effect Effects 0.000 claims abstract description 24
- 230000004308 accommodation Effects 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 19
- 239000012530 fluid Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- GHXZTYHSJHQHIJ-UHFFFAOYSA-N Chlorhexidine Chemical compound C=1C=C(Cl)C=CC=1NC(N)=NC(N)=NCCCCCCN=C(N)N=C(N)NC1=CC=C(Cl)C=C1 GHXZTYHSJHQHIJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a horizontal well sand washing nib, it includes: the central tube is internally provided with a through hole in a penetrating way, the central tube is sleeved with a righting body, and the peripheral wall of the righting body is provided with a backflow channel; the speed limiter comprises a shell and a mandrel, wherein the upper end of the mandrel is rotatably arranged on the inner wall of the lower end of the central tube, a through hole penetrates through the mandrel, the upper end of the shell is fixedly arranged on the outer wall of the lower end of the central tube, the lower end of the shell is provided with an opening, and the lower end of the mandrel penetrates through the opening of the shell; the upper end of the spray head is connected with the lower end of the mandrel, the lower end of the spray head is connected with the sand washing pen point, a plurality of rotary nozzles are arranged on the peripheral wall of the spray head at intervals, and the spray head is communicated with the through hole of the central tube through the through hole of the mandrel. The utility model discloses can carry out the omnidirectional sand washing to the horizontal well, the sand washing is effectual.
Description
Technical field
The utility model relates to the oil wells in petroleum production engineering to rush sediment outflow technical field, specifically a kind of horizontal well sand washing pen
Point.
Background technique
As horizontal well more and more plays a role in crude oil production field, horizontal well, which shakes out, can not also be kept away as one
The production problem exempted from need to carry out sand control to horizontal well, sand washing is handled to guarantee production.Existing sand-washing pen point is for straight well
Sand washing and design, there is no be directed to horizontal well dedicated sand-washing pen point.Because the net horizontal section of horizontal well is longer, sand body would generally
It is gathered in the lower half of production string, and conventional sand-washing pen point can only effectively go out the sand in front of pen tip, but to pen tip
Lower part sand body function and effect are unsatisfactory.
Utility model content
The purpose of the utility model is to provide a kind of horizontal well sand washing pen tips, and comprehensive rush can be carried out to horizontal well
Sand, sand washing effect are good.
Following technical proposal can be used to realize in the above-mentioned purpose of the utility model:
The utility model provides a kind of horizontal well sand washing pen tip, wherein and the horizontal well sand washing pen tip includes: central tube,
Through-hole is provided in it, outer to be arranged centralizer body, the peripheral wall of the centralizer body is equipped with return flow line；Limiter of speed comprising shell and
Mandrel, the inner wall set on the central tube lower end that the upper end of the mandrel is able to rotate provide through-hole, the shell in the mandrel
The upper end of body is fixedly arranged on the outer wall of the central tube lower end, and the lower end of the shell is equipped with aperture, and the lower end of the mandrel is worn
In the aperture of the shell；Spray head, the upper end are connected with the lower end of the mandrel, and lower end is connected with sand-washing pen point, the spray
The peripheral wall of head is equipped at intervals with multiple swivel nozzles, and the spray head is connected by the through-hole of the mandrel with the through-hole of the central tube
It is logical.
In a preferred embodiment, the injection direction of the swivel nozzle and the spray head is axially vertical, and with institute
That states spray head is formed radially whirl spraying angle.
In a preferred embodiment, what the peripheral wall of the spray head was also spaced is equipped with multiple flooding nozzles, the flushing spray
Mouth is with the swivel nozzle along the circumferentially staggered setting of the spray head.
In a preferred embodiment, the flushing that is axially formed of the injection direction of the flooding nozzle and the spray head is pressed from both sides
Angle.
In a preferred embodiment, the swivel nozzle and the flooding nozzle are two, two rotation sprays
The setting of mouth radial symmetric, two flooding nozzles are extended towards upstream and towards downstream inclination respectively.
In a preferred embodiment, the outer wall of the central tube is spirally connected pressure ring, the outer wall projection boss of the central tube,
The centralizer body is connected between the pressure ring and the boss.
In a preferred embodiment, the peripheral wall of the mandrel recessed multiple receiving portions at equal intervals are set in described accommodation section
Have a friction piece, the friction physical efficiency under the action of mandrel rotary centrifugal force radial outward movement and in the shell
Wall friction contact.
In a preferred embodiment, the width of the opening of described accommodation section is greater than the diameter of the friction piece, described to rub
The diameter of rub body is greater than the inner wall of the shell and the distance between the peripheral wall of the mandrel.
In a preferred embodiment, the width of the opening of described accommodation section is less than the diameter of the friction piece, described to rub
The radical length that rub body can stretch out the opening of described accommodation section is greater than or equal to the inner wall of the shell and the peripheral wall of the mandrel
The distance between.
In a preferred embodiment, the upper end of the fixed bearing of the inner wall of the lower end of the central tube, the mandrel passes through
The bearing is connected with the central tube.
The characteristics of the utility model horizontal well sand washing pen tip and advantage are:
The utility model sets gradually limiter of speed, spray head and sand-washing pen point in the lower end of central tube, to be limited by limiter of speed
The velocity of rotation of spray head processed, and realize being rotatably connected for spray head, spray is driven by the sand cleaning fluid that the swivel nozzle of spray head sprays
Head, sand-washing pen point and mandrel synchronous rotary, while its sand cleaning fluid sprayed also can carry out sand washing to horizontal well periphery, pass through spray head
The sand cleaning fluid that sprays of flooding nozzle impact failure directly is carried out to the sand (the especially sand of horizontal well lower part) on horizontal well periphery,
Realization carries out comprehensive sand washing to horizontal well, and sand washing speed is fast, and sand washing effect is good, is able to satisfy the sand washing needs of horizontal well, separately
Outside, also guarantee that central tube is placed in the middle by the centralizer body being sheathed on outside central tube, and sand cleaning fluid can also be made to carry the sand gone out through helping
The return flow line of roman returns to ground.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model horizontal well sand washing pen tip.
Fig. 2 is the schematic cross-section of the centralizer body of the utility model horizontal well sand washing pen tip.
Fig. 3 is the schematic cross-section of the limiter of speed of the utility model horizontal well sand washing pen tip.
Fig. 4 is the schematic cross-section of the spray head of the utility model horizontal well sand washing pen tip.
Drawing reference numeral explanation:
1, central tube；11, through-hole；12, boss；
2, pressure ring；
3, centralizer body；31, groove；
4, limiter of speed；41, shell；42, mandrel；43, friction piece；
5, spray head；51, swivel nozzle；52, flooding nozzle；
6, sand-washing pen point.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figures 1 to 4, the utility model provides a kind of horizontal well sand washing pen tip, wherein the horizontal well sand washing pen
Point includes: central tube 1, inside provides through-hole 11, outer to be arranged centralizer body 3, and the peripheral wall of the centralizer body 3 is equipped with return flow line；
Limiter of speed 4 comprising shell 41 and mandrel 42, what the upper end of the mandrel 42 was able to rotate is set to the interior of 1 lower end of central tube
Wall provides through-hole in the mandrel 42, and the upper end of the shell 41 is fixedly arranged on the outer wall of 1 lower end of central tube, the shell
41 lower end is equipped with aperture, and the lower end of the mandrel 42 is arranged in the aperture of the shell 41；Spray head 5, the upper end and the core
The lower end of axis 42 is connected, and lower end is connected with sand-washing pen point 6, and the peripheral wall of the spray head 5 is equipped at intervals with multiple swivel nozzles 51, institute
Spray head 5 is stated to be connected by the through-hole of the mandrel 42 with the through-hole 11 of the central tube 1.
Specifically, inner via hole 11 is used to inject sand cleaning fluid as shown in Figure 1, central tube 1 is substantially in hollow tubular, outside
The centralizer body 3 being arranged is used for righting central tube 1, keeps its center condition, the top and bottom of central tube 1 are equipped with external screw thread
(wherein upper end refers to central tube 1 one end namely left end shown in fig. 1 far from sand-washing pen point 6, and lower end refers to central tube 1
One end namely right end shown in fig. 1 close to sand-washing pen point 6), convenient for linking together with other each components, 3 peripheral wall of centralizer body
Return flow line be used to for sand cleaning fluid sand is carried out ground, passed through up and down preferably, being equipped with of being spaced of 3 peripheral wall of centralizer body is multiple
Other modes can also be used certainly and form return flow line to form return flow line (as shown in Figure 2) for logical groove, limiter of speed 4
Shell is threadedly coupled with the external screw thread of 1 lower end of central tube, and mandrel 42 is covered inside it, and mandrel 42 is for realizing central tube
1 and spray head 5 connection, spray head 5 is used to spray the sand cleaning fluid from central tube 1 through sand-washing pen point 6 and each nozzle, realizes full side
The sand washing of position, the sand cleaning fluid sprayed by the swivel nozzle 51 of spray head 5, generates torque, drives spray head 5 and mandrel 42 to rotate, together
When can also play the role of certain sand washing to peripheral region, sand-washing pen point 6 is connect by screw thread with spray head 5, and sand-washing pen point 6 is passed through
The sand in horizontal well downstream is directly impacted, realizes sand washing, while it can also play the role of certain spy sand, sand-washing pen point 6 goes out
The diameter of mouth is about 10mm~15mm.
Further, as shown in Figure 1 and Figure 4, the axial direction of the injection direction of the swivel nozzle 51 and the spray head 5 is hung down
Directly, and with the spray head 5 it is formed radially whirl spraying angle, with the sand cleaning fluid sprayed using swivel nozzle 51, generates torque, realizes
The rotation of spray head 5, and then mandrel 42 is rotated, preferably, whirl spraying angle is 45 degree, wherein the injection of swivel nozzle 51
Direction is the direction of the sand cleaning fluid sprayed from the outlet of swivel nozzle 51, and (namely Fig. 1 shows the axial direction of axial direction, that is, central tube 1 of spray head 5
Left and right directions out), the radial direction of spray head 5 is the direction on the axial cross section perpendicular to spray head 5 and passing through 5 center of spray head.
Further, as shown in Figure 1 and Figure 4, what the peripheral wall of the spray head 5 was also spaced is equipped with multiple flooding nozzles 52 (i.e.
The peripheral wall interval of spray head 5 is equipped with multiple nozzles, which includes swivel nozzle 51 and flooding nozzle 52), the flooding nozzle
52 realize thorough while rotation with guaranteeing that spray head 5 is stable with the swivel nozzle 51 along the circumferentially staggered setting of the spray head 5
Bottom sand washing, sand washing effect is good, and work efficiency is high, i.e. 52 main function of flooding nozzle is sand washing.Further, the flushing spray
The injection direction of mouth 52 is axially formed flushing angle, i.e. axial direction of the flooding nozzle 52 relative to spray head 5, court with the spray head 5
Upstream inclination is sprayed or is sprayed towards inclined downstream, preferably, rinsing angle is 45 degree, wherein the injection of flooding nozzle 52
Direction is the direction for the sand cleaning fluid that the outlet of flooding nozzle 52 sprays.
In a preferred embodiment, as shown in figure 4, the swivel nozzle 51 and the flooding nozzle 52 are two, two
A 51 radial symmetric of swivel nozzle setting, makes spray head 5 stablize rotation, two flooding nozzles 52 are respectively towards upstream and court
Downstream inclination is extended, and makes the injection direction of a flooding nozzle and the flushing angle of spray head being axially formed towards upstream, and
The injection direction of another flooding nozzle and the flushing angle of spray head being axially formed towards downstream, with the region to 5 periphery of spray head
Thorough sand washing.
Further, the pressure ring 2 as shown in Figure 1, outer wall of the central tube 1 is spirally connected, the outer wall projection of the central tube 1 are convex
Platform 12, the centralizer body 3 is connected between the pressure ring 2 and the boss 12, specifically, the lower end of central tube 1 is externally threaded
Top projection boss, the lower section of the upper external screw thread of central tube 1 are equipped with the thread segment being spirally connected for pressure ring 2, are sheathed in centralizer body 3
After on central tube 1 and its lower end is connected to boss 12, by the way that pressure ring 2 to be bolted in the thread segment of central tube 1, to be connected to righting
The upper end of body 3 guarantees that centralizer body 3 is firm and is sheathed on outside central tube 1.
Further, as shown in figure 3, the peripheral wall of the mandrel 42 recessed multiple receiving portions at equal intervals, in described accommodation section
Equipped with friction piece 43, the friction piece 43 can under the action of 42 rotary centrifugal force of mandrel radial outward movement and with it is described
The inner wall CONTACT WITH FRICTION of shell 41, to limit the revolving speed of mandrel 42, and the distance and centrifugal force of 43 radial outward movement of friction piece
Size be positively correlated, i.e., selection speed it is bigger, friction piece 43 stretch out mandrel 42 part it is bigger, frictional force is bigger, specifically,
Mandrel 42 is substantially cylindrical, in the middle part of outer wall be equipped with annular protrusion, circumferentially edge is equally spaced on annular protrusion
Recessed multiple receiving portions, receiving portion are substantially in semi-cylindrical, the opening of receiving portion radially, in favor of the radial direction of friction piece 43
It is displaced outwardly, it can also be shaggy spherosome that friction piece 43, which can be shaggy column, as long as can be in centrifugation masterpiece
In being moved radially outward in receiving portion under, and generation friction is contacted with shell 41, realize speed limit.
In one embodiment, the width of the opening of described accommodation section is greater than the diameter of the friction piece 43, the friction piece
43 diameter is greater than the inner wall of the shell 41 and the distance between the peripheral wall of the mandrel 42, avoids friction piece 43 from shell 41
Gap between mandrel 42 is fallen.In another embodiment, the width of the opening of described accommodation section is less than the friction piece 43
Diameter, avoid the completely out receiving portion of friction piece 43, the radial direction that the friction piece 43 can stretch out the opening of described accommodation section is long
Degree is greater than or equal to the inner wall of the shell 41 and the distance between the peripheral wall of the mandrel 42, it is ensured that friction piece 43 can contact shell
Body 41 provides frictional force.
Further, the fixed bearing (not shown) of the inner wall of the lower end of the central tube 1, the upper end of the mandrel 42
It is connected by the bearing with the central tube 1, what realization mandrel 42 was able to rotate connect with central tube 1, realizes mandrel 42 around axis
To be freely rotated, wherein shell 41 is substantially cylindrical in shape, and the upper end opening is spirally connected with central tube 1, the setting of the center of lower end
For wearing for mandrel 42, the internal diameter of central tube 1 is less than the outer diameter of mandrel 42 for aperture, sets in the lower end inner wall ring of central tube 1 recessed
Concave portion, bearing and connecting mandrel 42 is arranged.
Below for two swivel nozzles 51 and two flooding nozzles 52 are set, horizontal well is applied to the utility model
Specific work process be illustrated:
The horizontal well sand washing pen tip of the utility model at work, postpones with tubing string tripping in purpose of horizon, is substantially in water
Level state, under the effect of centralizer body 3, horizontal well sand washing pen tip is located at the middle position in horizontal well channel, is injected and is rushed by tubing string
Sand liquid, sand cleaning fluid successively after the through-hole of the through-hole 11 of central tube 1, the mandrel 42 of limiter of speed enters in spray head 5, are divided into five road liquid
Circulation road, sand cleaning fluid sprays horizontal sand washing through sand-washing pen point 6 all the way, and two-way sand cleaning fluid is along the radial through two rotation sprays of spray head 5
Mouth 51 sprays respectively, and spray head 5 is driven to rotate, while also can carry out sand washing to horizontal well periphery, and another two-way sand cleaning fluid is through two
Flooding nozzle 52 respectively super spray head 5 upstream and downstream tilt spray, with to sand-washing pen point 6 can not sand washing spray head 5 periphery
(the especially lower area of sand-washing pen point) carries out sand washing, and the sand cleaning fluid of ejection can carry sand from annular region through centralizer body 3
Return flow line returns to ground.In the process, spray head 5, mandrel 42 and the sand-washing pen point 6 synchronous rotation under the effect of swivel nozzle 51
Turn, the friction piece 43 being embedded on mandrel 42 radial outward movement under the action of 42 rotary centrifugal force of mandrel, and with 41 phase of shell
It contacts and generates frictional force, and with the increase of 42 revolving speed of mandrel, centrifugal force suffered by friction piece 43 increases, and generates with shell 41
Contact friction force also increases, and rotates mandrel 42 within the scope of desired speed, prevents revolving speed is too fast from causing atomizating phenomenon and liquidating
Sand has an adverse effect, guarantee sand washing everything goes well with your work carry out.Certainly, the utility model can also be used for Vertical Well or slant well,
Sand washing effect is good under the premise of not increasing operating cost, and task difficulty is low, is conducive to promote and apply.
The utility model sets gradually limiter of speed 4, spray head 5 and sand-washing pen point 6 in the lower end of central tube 1, to pass through speed limit
Device 4 limits the velocity of rotation of spray head 5, and realizes being rotatably connected for spray head 5, is rushed by what the swivel nozzle 51 of spray head 5 sprayed
Sand liquid band moves 42 synchronous rotary of spray head 5, sand-washing pen point 6 and mandrel, while its sand cleaning fluid sprayed can also be realized to horizontal well week
Side carries out sand washing, sand (especially horizontal well of the sand cleaning fluid sprayed by the flooding nozzle 52 of spray head 5 directly to horizontal well periphery
The sand of lower part) impact failure is carried out, realization carries out comprehensive sand washing to horizontal well, and sand washing speed is fast, and sand washing effect is good, can be full
The sand washing of sufficient horizontal well needs, in addition, also guaranteeing that central tube 1 is placed in the middle by the centralizer body 3 being sheathed on outside central tube 1, and can also
So that sand cleaning fluid is carried return flow line (such as groove 31) of the sand gone out through centralizer body 3 and returns to ground.
The above descriptions are merely exemplary embodiments of the present utility model, not to limit the model of the utility model
It encloses.Any those skilled in the art, made equivalent variations under the premise of not departing from the principle and design of the utility model
With modification, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of horizontal well sand washing pen tip, which is characterized in that the horizontal well sand washing pen tip includes:
Central tube inside provides through-hole, outer to be arranged centralizer body, and the peripheral wall of the centralizer body is equipped with return flow line；
Limiter of speed comprising shell and mandrel, the inner wall set on the central tube lower end that the upper end of the mandrel is able to rotate, institute
It states and provides through-hole in mandrel, the upper end of the shell is fixedly arranged on the outer wall of the central tube lower end, and the lower end of the shell is equipped with
Aperture, the lower end of the mandrel are arranged in the aperture of the shell；
Spray head, the upper end are connected with the lower end of the mandrel, and lower end is connected with sand-washing pen point, and the peripheral wall interval of the spray head is set
There are multiple swivel nozzles, the spray head is connected by the through-hole of the mandrel with the through-hole of the central tube.
2. horizontal well sand washing pen tip according to claim 1, which is characterized in that the injection direction of the swivel nozzle and institute
It states the axially vertical of spray head, and is formed radially whirl spraying angle with the spray head.
3. horizontal well sand washing pen tip according to claim 1, which is characterized in that the peripheral wall of the spray head was also spaced is equipped with
The circumferentially staggered setting of multiple flooding nozzles, the flooding nozzle and the swivel nozzle along the spray head.
4. horizontal well sand washing pen tip according to claim 3, which is characterized in that the injection direction of the flooding nozzle and institute
That states spray head is axially formed flushing angle.
5. horizontal well sand washing pen tip according to claim 4, which is characterized in that the swivel nozzle and the flooding nozzle
It is two, two swivel nozzle radial symmetric settings, two flooding nozzles are tilted towards upstream and towards downstream respectively
It is extended.
6. horizontal well sand washing pen tip according to claim 1, which is characterized in that the outer wall of the central tube is spirally connected pressure ring,
The outer wall projection boss of the central tube, the centralizer body are connected between the pressure ring and the boss.
7. horizontal well sand washing pen tip according to claim 1, which is characterized in that the peripheral wall of the mandrel is recessed more at equal intervals
A receiving portion, is equipped with friction piece in described accommodation section, the friction physical efficiency under the action of mandrel rotary centrifugal force radially
It moves out and the inner wall CONTACT WITH FRICTION with the shell.
8. horizontal well sand washing pen tip according to claim 7, which is characterized in that the width of the opening of described accommodation section is greater than
The diameter of the friction piece, the diameter of the friction piece be greater than between the inner wall of the shell and the peripheral wall of the mandrel away from
From.
9. horizontal well sand washing pen tip according to claim 7, which is characterized in that the width of the opening of described accommodation section is less than
The radical length of the diameter of the friction piece, the opening that the friction physical efficiency stretches out described accommodation section is greater than or equal to the shell
Inner wall and the mandrel the distance between peripheral wall.
10. horizontal well sand washing pen tip according to claim 1, which is characterized in that the inner wall of the lower end of the central tube is solid
If bearing, the upper end of the mandrel is connected by the bearing with the central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820947997.5U CN208473740U (en) | 2018-06-20 | 2018-06-20 | Horizontal well sand washing pen point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820947997.5U CN208473740U (en) | 2018-06-20 | 2018-06-20 | Horizontal well sand washing pen point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208473740U true CN208473740U (en) | 2019-02-05 |
Family
ID=65214248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820947997.5U Active CN208473740U (en) | 2018-06-20 | 2018-06-20 | Horizontal well sand washing pen point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208473740U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523697A (en) * | 2019-09-18 | 2021-03-19 | 中国石油天然气股份有限公司 | Drill bit and drilling equipment |
| CN112709544A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well sand washing pen point |
| CN112709543A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well dragging and restraining type sand washing pipe column |
| CN113410644A (en) * | 2021-06-10 | 2021-09-17 | 深圳市英佳创电子科技有限公司 | Indoor omnidirectional antenna |
| CN114251066A (en) * | 2020-09-25 | 2022-03-29 | 中国石油天然气股份有限公司 | Combined switch and hydraulic dragging comprehensive sand washing device and process |
-
2018
- 2018-06-20 CN CN201820947997.5U patent/CN208473740U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523697A (en) * | 2019-09-18 | 2021-03-19 | 中国石油天然气股份有限公司 | Drill bit and drilling equipment |
| CN112709544A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well sand washing pen point |
| CN112709543A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well dragging and restraining type sand washing pipe column |
| CN114251066A (en) * | 2020-09-25 | 2022-03-29 | 中国石油天然气股份有限公司 | Combined switch and hydraulic dragging comprehensive sand washing device and process |
| CN114251066B (en) * | 2020-09-25 | 2023-12-22 | 中国石油天然气股份有限公司 | Combined switch, hydraulic dragging comprehensive sand washing device and process |
| CN113410644A (en) * | 2021-06-10 | 2021-09-17 | 深圳市英佳创电子科技有限公司 | Indoor omnidirectional antenna |
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