CN203925349U - Nitrogen bores the special means of egress of gas lift liquid drainage - Google Patents
Nitrogen bores the special means of egress of gas lift liquid drainage Download PDFInfo
- Publication number
- CN203925349U CN203925349U CN201420314967.2U CN201420314967U CN203925349U CN 203925349 U CN203925349 U CN 203925349U CN 201420314967 U CN201420314967 U CN 201420314967U CN 203925349 U CN203925349 U CN 203925349U
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- spoiler
- oversheath
- drilling well
- choke manifold
- ring set
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Abstract
The utility model relates to the energy dissipation below spillway device technique field of nitrogen brill gas lift liquid drainage, is that a kind of nitrogen bores the special means of egress of gas lift liquid drainage; It comprises drilling well choke manifold return piping, oversheath, buffer connecting rods, spoiler and spoiler; Outside the right side of drilling well choke manifold return piping, be provided with and can cushion slow down mobile and automatically reset oversheath in left and right.The utility model reasonable and compact in structure, easy to use; Drilling liquid flow, in the time of spoiler and spoiler, can be offset in part drilling fluid remaining energy, reduces flow and the flow velocity of drilling fluid, and the mud flow rate and the flow velocity that make to enter slurry tank are little, and a fluid stream disperses, and effectively prevents that slurry tank from damaging; For the shunting in slurry tank provides time enough, shunting effect is good simultaneously; In addition, the buffer connecting rods of employing, can eliminate the vibration that causes drilling well choke manifold because of slug flow, safe; Slow down impact force, protection spoiler, improves application life of the present utility model simultaneously.
Description
Technical field
the utility model relates to the energy dissipation below spillway device technique field of nitrogen brill gas lift liquid drainage, is that a kind of nitrogen bores the special means of egress of gas lift liquid drainage.
Background technology
in the operation of oil drilling gas lift liquid drainage, in well, inject gases at high pressure by ground supercharging equipment, the returning in process from shaft bottom annular space to well head of the drilling fluid in well, the gas compression energy of gases at high pressure discharges gradually along with the rising of drilling fluid; When drilling fluid rises to well head, the gas compression energy of gases at high pressure also can more remaining energy; The moment that these remaining energy enter slurry tank at drilling fluid through the outlet of drilling well choke manifold discharges rapidly, cause drilling fluid to enter slurry tank flow velocity too fast, in slurry tank, drilling fluid also branches to secondary tank just from the liquid outlet discharge of slurry tank, and shunting effect is poor; Simultaneously because of the drilling fluid that above returns out this as oil gas two-phase mixture, be subject to again remaining energy, can form strong slug flow, a fluid stream is concentrated, the impact force that tank is destroyed is larger, easily causes slurry tank destruction; Be subject to the impact of the gas-liquid instantaneous delivery fluctuation of slug flow, drilling well choke manifold can produce vibration, is extremely unfavorable for safety work simultaneously.
Summary of the invention
the utility model provides a kind of nitrogen to bore the special means of egress of gas lift liquid drainage, has overcome the deficiency of above-mentioned prior art, and it can effectively solve drilling fluid in the time that the outlet of drilling well choke manifold enters slurry tank, and flow velocity is too fast, and shunting effect is poor; Drilling well choke manifold can produce vibration, and damages the problem of slurry tank.
the technical solution of the utility model realizes by following measures: a kind of nitrogen bores the special means of egress of gas lift liquid drainage, comprises drilling well choke manifold return piping, oversheath, buffer connecting rods, spoiler and spoiler; Outside the right side of drilling well choke manifold return piping, be provided with and can cushion slow down mobile and automatically reset oversheath in left and right, between oversheath left part and drilling well choke manifold return piping, be installed together by buffer connecting rods; In oversheath right part, interval is installed with spoiler and spoiler from left to right, between spoiler left end and the right side of drilling well choke manifold return piping, has buffering moving interval; Between spoiler and spoiler, form shunting flow-disturbing chamber, have liquid pass hole at the middle part of spoiler; Discharge orifice is thanksed for your hospitality at middle part at spoiler.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
above-mentioned buffer connecting rods can comprise tension ring set, left positioning seat, left Compress Spring, slips sheet, right positioning seat and right Compress Spring; The inner, left side at oversheath is installed with tension ring set, and tension ring set is sleeved on drilling well choke manifold return piping; On the drilling well choke manifold return piping of oversheath left, be fixed with left positioning seat, on the drilling well choke manifold return piping between left end and the left positioning seat of tension ring set, be set with left Compress Spring; Tension ring set inside be the wide taper type in the left narrow right side and and drilling well choke manifold return piping between form slips install annular groove, install at slips that annular groove inner periphery is uniform is provided with at least three slips sheets, the outer face of each slips sheet is tapered and be fitted on the inwall of tension ring set, being respectively equipped with being tilted to the right and can being buckled in the slip insert on drilling well choke manifold return piping outer wall in the inside of each slips sheet; Between oversheath and drilling well choke manifold return piping, form annular space chamber, on right-hand drilling well choke manifold return piping of slips sheet, be fixed with right positioning seat, right positioning seat sealing is arranged in annular space chamber; On the drilling well choke manifold return piping between slips sheet and right positioning seat, be set with right Compress Spring.
above-mentioned left positioning seat can comprise holding screw and left location ring set; Put circle distribution at left locating ring and have at least one screwed hole, in screwed hole, be provided with and left location ring set can be fixed on to the holding screw on drilling well choke manifold return piping respectively by screw thread, the inner of holding screw withstands on drilling well choke manifold return piping; The annular left spring mounting groove that has mutual correspondence at the left end of the right-hand member of left location ring set and tension ring set, the left end of left Compress Spring and right-hand member are arranged on respectively in left spring mounting groove; Right positioning seat comprises holding screw, right location ring set and seal ring set; Put circle distribution at right locating ring and have at least one screwed hole, in screwed hole, be provided with and right location ring set can be fixed on to the holding screw on drilling well choke manifold return piping respectively by screw thread, the inner of holding screw withstands on drilling well choke manifold return piping; In the annular space chamber in right location ring set left side, being provided with can be by the seal ring set of annular space chamber sealing, the right spring fitting groove that is respectively equipped with mutual correspondence at the left end of seal ring set and the right-hand member of slips sheet, the left end of right Compress Spring and right-hand member are arranged on respectively in right spring fitting groove.
above-mentioned tensioning ring puts can external screw thread, and tension ring set is fixedly mounted in the right side of oversheath by screw thread.
above-mentioned seal ring set can be metal ring; Sealing ring together with being installed with vertically at least between seal ring set and oversheath; Sealing ring together with being installed with vertically at least between seal ring set and drilling well choke manifold return piping.
in the right side of above-mentioned oversheath, can have opening installation annular groove to the right, spoiler and spoiler from left to right interval are arranged in installation annular groove; Between spoiler and spoiler, spacer ring is installed, spacer ring is positioned at installs annular groove; Between spoiler, spoiler and spacer ring, form shunting flow-disturbing chamber; There is external screw thread on the right side of oversheath, is installed with and spoiler, spoiler and spacer ring axial limiting can be being installed to the helmet in annular groove at the right-hand member of oversheath by screw thread; The inside left-end of helmet withstands on the right side of oversheath and spoiler; Or/and liquid pass hole is the narrow conical through-hole in the left wide right side, and be positioned at the middle part of spoiler; Spoiler is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler.
the utility model reasonable and compact in structure, easy to use; Drilling liquid flow, in the time of spoiler and spoiler, can be offset in part drilling fluid remaining energy, reduces flow and the flow velocity of drilling fluid, and the mud flow rate and the flow velocity that make to enter slurry tank are little, and a fluid stream disperses, and effectively prevents that slurry tank from damaging; For the shunting in slurry tank provides time enough, shunting effect is good simultaneously; In addition, the buffer connecting rods of employing, can eliminate the vibration that causes drilling well choke manifold because of slug flow, safe; Slow down impact force, protection spoiler, improves application life of the present utility model simultaneously.
Brief description of the drawings
the master that accompanying drawing 1 is the utility model most preferred embodiment is depending on partly cuing open structural representation.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to sectional structure schematic diagram.
coding in accompanying drawing is respectively: 1 is drilling well choke manifold return piping, and 2 is oversheath, and 3 is spoiler, 4 is spoiler, and 5 is shunting flow-disturbing chamber, and 6 is liquid pass hole, 7 is flow-disturbing hole, 8 is tension ring set, and 9 is slips sheet, and 10 is left Compress Spring, 11 is annular space chamber, 12 is holding screw, and 13 is left location ring set, and 14 is left spring mounting groove, 15 is right location ring set, 16 is seal ring set, and 17 is right spring fitting groove, and 18 is spacer ring, 19 is helmet, 20 is sealing ring, and 21 is right Compress Spring, and 22 is slip insert.
Detailed description of the invention
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, the special means of egress of this nitrogen brill gas lift liquid drainage comprises drilling well choke manifold return piping 1, oversheath 2, buffer connecting rods, spoiler 3 and spoiler 4; Outside the right side of drilling well choke manifold return piping 1, be provided with and can cushion slow down mobile and automatically reset oversheath 2 in left and right, between oversheath 2 left parts and drilling well choke manifold return piping 1, be installed together by buffer connecting rods; In oversheath 2 right parts, interval is installed with spoiler 3 and spoiler 4 from left to right, between spoiler 3 left ends and the right side of drilling well choke manifold return piping 1, has buffering moving interval; Between spoiler 3 and spoiler 4, form shunting flow-disturbing chamber 5, have liquid pass hole 6 at the middle part of spoiler 3; Thanks for your hospitality discharge orifice 7 at the middle part of spoiler 4.Drilling fluid sprays when the spoiler 3 from drilling well choke manifold return piping 1, and spoiler 3 can stop from drilling well choke manifold return piping 1 drilling fluid of ejection at a high speed, offsets the remaining energy of part in drilling fluid, reduces flow velocity; Drilling fluid enters the shunting flow-disturbing chamber 5 of large diameter from liquid pass hole 6, because flow and the overflowing end face of fluid are inversely proportional to, so drilling fluid slows down entering shunting flow-disturbing chamber 5 rear flow velocity, according to bernoulli principle, the pressure of drilling fluid reduces, be equivalent to and offset the remaining energy of part, shunting flow-disturbing chamber 5 can disperse a fluid stream of the cleaner for high-pressure drilling fluid of injecting from liquid pass hole 6, makes the flow of the drilling fluid that enters slurry tank little, flow velocity is low, a fluid stream disperses; Reduce the impact to slurry tank, prevent that slurry tank from damaging; For the drilling fluid in slurry tank provides the enough shunting time, shunting effect is good simultaneously; Buffer connecting rods can slow down the impact force of drilling fluid to spoiler 3, offsets the remaining energy of part; Oversheath 2 is connected on drilling well choke manifold return piping 1 by buffer connecting rods, can slow down impact force with respect to the drilling well choke manifold return piping 1 left and right translational speed that slows down gradually, thereby eliminate the vibration that slug flow causes, make drilling well choke manifold and connected equipment connection stable, safe; The drilling fluid flow velocity that enters slurry tank from flow-disturbing hole 7 is slow, and impact force is little, reduces the damage to slurry tank.
can according to actual needs, above-mentioned nitrogen be bored to the special means of egress of gas lift liquid drainage and make further optimization and/or improvements:
as shown in accompanying drawing 1,2, buffer connecting rods comprises tension ring set 8, left positioning seat, left Compress Spring 10, slips sheet 9, right positioning seat and right Compress Spring 21; Be installed with tension ring set 8 in the inner, left side of oversheath 2, tension ring set 8 is sleeved on drilling well choke manifold return piping 1; On the drilling well choke manifold return piping 1 of oversheath 2 lefts, be fixed with left positioning seat, on the drilling well choke manifold return piping 1 between left end and the left positioning seat of tension ring set 8, be set with left Compress Spring 10; Tension ring set 8 inside be the wide taper type in the left narrow right side and and drilling well choke manifold return piping 1 between form slips install annular groove, install at slips that annular groove inner periphery is uniform is provided with at least three slips sheets 9, the outer face of each slips sheet 9 is tapered and be fitted on the inwall of tension ring set 8, being respectively equipped with being tilted to the right and can being buckled in the slip insert 22 on drilling well choke manifold return piping 1 outer wall in the inside of each slips sheet 9; Between oversheath 2 and drilling well choke manifold return piping 1, form annular space chamber 11, on right-hand drilling well choke manifold return piping 1 of slips sheet 9, be fixed with right positioning seat, right positioning seat sealing is arranged in annular space chamber 11; On the drilling well choke manifold return piping 1 between slips sheet 9 and right positioning seat, be set with right Compress Spring 21.
when drilling fluid impacts spoiler 3 from 1 ejection of drilling well choke manifold return piping, spoiler 3 is had to an impact force to the right, and drive tension ring set 8 to move right by oversheath 2; Due to the inside conical surface effect of tension ring set 8, impose on slips sheet 9 and be right oblique interior active force; Tension ring set 8 can drive slips sheet 9 move right and compress right Compress Spring 21, right Compress Spring 21 be compressed in the axial thrust load of offsetting gradually this active force, the radial component of this active force imposes on slips sheet 9, increase the frictional force between slips sheet 9 and drilling well choke manifold return piping 1, make oversheath 2 more firm with being connected of drilling well choke manifold return piping 1; Left Compress Spring 10 plays the effect of the buffer limit that moves to right to tension ring set 8 and oversheath 2, when the slug flow that drilling fluid forms impacts spoiler 3, left Compress Spring 10 can slow down the pressure oscillation that this slug flow causes, it can not acted on drilling well choke manifold return piping 1, protection drilling well choke manifold; The pressure-acting of right Compress Spring 21, in tension ring set 8, makes to strain ring set 8 and can be pressed on slips sheet 9 always simultaneously, ensures that drilling well choke manifold return piping 1 remains and is connected with oversheath 2; In addition, can also protect spoiler 3, prevent because the distance of oppositely resilience exceeds buffering moving interval, and cause spoiler 3 and the right-hand member of drilling well choke manifold return piping 1 bump and damage spoiler 3, improve application life of the present utility model.
as shown in Figure 1, left positioning seat comprises holding screw 12 and left location ring set 13; On the ring set 13 of left location, circle distribution has at least one screwed hole, in screwed hole, be provided with and left location ring set 13 can be fixed on to the holding screw 12 on drilling well choke manifold return piping 1 respectively by screw thread, the inner of holding screw 12 withstands on drilling well choke manifold return piping 1; The annular left spring mounting groove 14 that has mutual correspondence at the left end of the right-hand member of left location ring set 13 and tension ring set 8, the left end of left Compress Spring 10 and right-hand member are arranged on respectively in left spring mounting groove 14; Right positioning seat comprises holding screw 12, right location ring set 15 and seal ring set 16; On the ring set 15 of right location, circle distribution has at least one screwed hole, in screwed hole, be provided with and right location ring set 15 can be fixed on to the holding screw 12 on drilling well choke manifold return piping 1 respectively by screw thread, the inner of holding screw 12 withstands on drilling well choke manifold return piping 1; The seal ring set 16 that annular space chamber 11 can be sealed is installed in the annular space chamber 11 in ring set 15 left sides, right location, the right spring fitting groove 17 that is respectively equipped with mutual correspondence at the left end of seal ring set 16 and the right-hand member of slips sheet 9, the left end of right Compress Spring 21 and right-hand member are arranged on respectively in right spring fitting groove 17.Left positioning seat and right location seat structure are like this simple, easy for installation; Seal ring set 16 in right positioning seat plays the effect of drilling fluid from 11 side leakages of annular space chamber that prevent.
as shown in Figure 1, on tension ring set 8, have external screw thread, tension ring set 8 is fixedly mounted in the right side of oversheath 2 by screw thread.
the tension ring set 8 being threaded connection and oversheath 2 easy accessibility.
as shown in Figure 1, seal ring set 16 is metal ring; Sealing ring 20 together with being installed with vertically at least between seal ring set 16 and oversheath 2; Sealing ring 20 together with being installed with vertically at least between seal ring set 16 and drilling well choke manifold return piping 1.Sealing ring 20 plays the effect that increases contact surface sealing.
as shown in Figure 1, have opening installation annular groove to the right in the right side of oversheath 2, spoiler 3 is arranged in installation annular groove at interval from left to right with spoiler 4; Between spoiler 3 and spoiler 4, spacer ring 18 is installed, spacer ring 18 is positioned at installs annular groove; Between spoiler 3, spoiler 4 and spacer ring 18, form shunting flow-disturbing chamber 5; There is external screw thread on the right side of oversheath 2, is installed with and spoiler 3, spoiler 4 can be being installed to the helmet 19 in annular groove with spacer ring 18 axial limitings at the right-hand member of oversheath 2 by screw thread; The inside left-end of helmet 19 withstands on the right side of oversheath 2 and spoiler 4.
as shown in Figure 1, liquid pass hole 6 is the narrow conical through-hole in the left wide right side, and is positioned at the middle part of spoiler 3; Spoiler 4 is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler 4.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations
Claims (10)
1. nitrogen bores the special means of egress of gas lift liquid drainage, it is characterized in that comprising drilling well choke manifold return piping, oversheath, buffer connecting rods, spoiler and spoiler; Outside the right side of drilling well choke manifold return piping, be provided with and can cushion slow down mobile and automatically reset oversheath in left and right, between oversheath left part and drilling well choke manifold return piping, be installed together by buffer connecting rods; In oversheath right part, interval is installed with spoiler and spoiler from left to right, between spoiler left end and the right side of drilling well choke manifold return piping, has buffering moving interval; Between spoiler and spoiler, form shunting flow-disturbing chamber, have liquid pass hole at the middle part of spoiler; Discharge orifice is thanksed for your hospitality at middle part at spoiler.
2. nitrogen according to claim 1 bores the special means of egress of gas lift liquid drainage, it is characterized in that buffer connecting rods comprises tension ring set, left positioning seat, left Compress Spring, slips sheet, right positioning seat and right Compress Spring; The inner, left side at oversheath is installed with tension ring set, and tension ring set is sleeved on drilling well choke manifold return piping; On the drilling well choke manifold return piping of oversheath left, be fixed with left positioning seat, on the drilling well choke manifold return piping between left end and the left positioning seat of tension ring set, be set with left Compress Spring; Tension ring set inside be the wide taper type in the left narrow right side and and drilling well choke manifold return piping between form slips install annular groove, install at slips that annular groove inner periphery is uniform is provided with at least three slips sheets, the outer face of each slips sheet is tapered and be fitted on the inwall of tension ring set, being respectively equipped with being tilted to the right and can being buckled in the slip insert on drilling well choke manifold return piping outer wall in the inside of each slips sheet; Between oversheath and drilling well choke manifold return piping, form annular space chamber, on right-hand drilling well choke manifold return piping of slips sheet, be fixed with right positioning seat, right positioning seat sealing is arranged in annular space chamber; On the drilling well choke manifold return piping between slips sheet and right positioning seat, be set with right Compress Spring.
3. nitrogen according to claim 2 bores the special means of egress of gas lift liquid drainage, it is characterized in that left positioning seat comprises holding screw and left location ring set; Put circle distribution at left locating ring and have at least one screwed hole, in screwed hole, be provided with and left location ring set can be fixed on to the holding screw on drilling well choke manifold return piping respectively by screw thread, the inner of holding screw withstands on drilling well choke manifold return piping; The annular left spring mounting groove that has mutual correspondence at the left end of the right-hand member of left location ring set and tension ring set, the left end of left Compress Spring and right-hand member are arranged on respectively in left spring mounting groove; Right positioning seat comprises holding screw, right location ring set and seal ring set; Put circle distribution at right locating ring and have at least one screwed hole, in screwed hole, be provided with and right location ring set can be fixed on to the holding screw on drilling well choke manifold return piping respectively by screw thread, the inner of holding screw withstands on drilling well choke manifold return piping; In the annular space chamber in right location ring set left side, being provided with can be by the seal ring set of annular space chamber sealing, the right spring fitting groove that is respectively equipped with mutual correspondence at the left end of seal ring set and the right-hand member of slips sheet, the left end of right Compress Spring and right-hand member are arranged on respectively in right spring fitting groove.
4. bore the special means of egress of gas lift liquid drainage according to the nitrogen described in claim 2 or 3, it is characterized in that tensioning ring has put external screw thread, tension ring set is fixedly mounted in the right side of oversheath by screw thread.
5. nitrogen according to claim 3 bores the special means of egress of gas lift liquid drainage, it is characterized in that seal ring set is metal ring; Sealing ring together with being installed with vertically at least between seal ring set and oversheath; Sealing ring together with being installed with vertically at least between seal ring set and drilling well choke manifold return piping.
6. nitrogen according to claim 4 bores the special means of egress of gas lift liquid drainage, it is characterized in that seal ring set is metal ring; Sealing ring together with being installed with vertically at least between seal ring set and oversheath; Sealing ring together with being installed with vertically at least between seal ring set and drilling well choke manifold return piping.
7. bore the special means of egress of gas lift liquid drainage according to nitrogen described in claim 1 or 2 or 3, it is characterized in that there is opening installation annular groove to the right in the right side of oversheath, spoiler and spoiler from left to right interval are arranged in installation annular groove; Between spoiler and spoiler, spacer ring is installed, spacer ring is positioned at installs annular groove; Between spoiler, spoiler and spacer ring, form shunting flow-disturbing chamber; There is external screw thread on the right side of oversheath, is installed with and spoiler, spoiler and spacer ring axial limiting can be being installed to the helmet in annular groove at the right-hand member of oversheath by screw thread; The inside left-end of helmet withstands on the right side of oversheath and spoiler; Or/and liquid pass hole is the narrow conical through-hole in the left wide right side, and be positioned at the middle part of spoiler; Spoiler is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler.
8. nitrogen according to claim 4 bores the special means of egress of gas lift liquid drainage, and it is characterized in that has opening installation annular groove to the right in the right side of oversheath, and spoiler and spoiler from left to right interval are arranged in installation annular groove; Between spoiler and spoiler, spacer ring is installed, spacer ring is positioned at installs annular groove; Between spoiler, spoiler and spacer ring, form shunting flow-disturbing chamber; There is external screw thread on the right side of oversheath, is installed with and spoiler, spoiler and spacer ring axial limiting can be being installed to the helmet in annular groove at the right-hand member of oversheath by screw thread; The inside left-end of helmet withstands on the right side of oversheath and spoiler; Or/and liquid pass hole is the narrow conical through-hole in the left wide right side, and be positioned at the middle part of spoiler; Spoiler is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler.
9. nitrogen according to claim 5 bores the special means of egress of gas lift liquid drainage, and it is characterized in that has opening installation annular groove to the right in the right side of oversheath, and spoiler and spoiler from left to right interval are arranged in installation annular groove; Between spoiler and spoiler, spacer ring is installed, spacer ring is positioned at installs annular groove; Between spoiler, spoiler and spacer ring, form shunting flow-disturbing chamber; There is external screw thread on the right side of oversheath, is installed with and spoiler, spoiler and spacer ring axial limiting can be being installed to the helmet in annular groove at the right-hand member of oversheath by screw thread; The inside left-end of helmet withstands on the right side of oversheath and spoiler; Or/and liquid pass hole is the narrow conical through-hole in the left wide right side, and be positioned at the middle part of spoiler; Spoiler is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler.
10. nitrogen according to claim 6 bores the special means of egress of gas lift liquid drainage, and it is characterized in that has opening installation annular groove to the right in the right side of oversheath, and spoiler and spoiler from left to right interval are arranged in installation annular groove; Between spoiler and spoiler, spacer ring is installed, spacer ring is positioned at installs annular groove; Between spoiler, spoiler and spacer ring, form shunting flow-disturbing chamber; There is external screw thread on the right side of oversheath, is installed with and spoiler, spoiler and spacer ring axial limiting can be being installed to the helmet in annular groove at the right-hand member of oversheath by screw thread; The inside left-end of helmet withstands on the right side of oversheath and spoiler; Or/and liquid pass hole is the narrow conical through-hole in the left wide right side, and be positioned at the middle part of spoiler; Spoiler is the wide conical through-hole in the left narrow right side, and is positioned at the middle part of spoiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314967.2U CN203925349U (en) | 2014-06-13 | 2014-06-13 | Nitrogen bores the special means of egress of gas lift liquid drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314967.2U CN203925349U (en) | 2014-06-13 | 2014-06-13 | Nitrogen bores the special means of egress of gas lift liquid drainage |
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| Publication Number | Publication Date |
|---|---|
| CN203925349U true CN203925349U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420314967.2U Withdrawn - After Issue CN203925349U (en) | 2014-06-13 | 2014-06-13 | Nitrogen bores the special means of egress of gas lift liquid drainage |
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| CN (1) | CN203925349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047555A (en) * | 2014-06-13 | 2014-09-17 | 中国石油集团西部钻探工程有限公司 | Special outlet device for nitrogen drilling gas lift liquid drainage |
-
2014
- 2014-06-13 CN CN201420314967.2U patent/CN203925349U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047555A (en) * | 2014-06-13 | 2014-09-17 | 中国石油集团西部钻探工程有限公司 | Special outlet device for nitrogen drilling gas lift liquid drainage |
| CN104047555B (en) * | 2014-06-13 | 2016-08-17 | 中国石油集团西部钻探工程有限公司 | Nitrogen bores the special outlet device of gas lift liquid drainage |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |