CN205189826U - Well -flushing sand washing device - Google Patents
Well -flushing sand washing device Download PDFInfo
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- CN205189826U CN205189826U CN201521013198.3U CN201521013198U CN205189826U CN 205189826 U CN205189826 U CN 205189826U CN 201521013198 U CN201521013198 U CN 201521013198U CN 205189826 U CN205189826 U CN 205189826U
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Abstract
The utility model discloses a well -flushing sand washing device, it includes: but it overflows the double -deck concentric oil pipe of passageway and is connected the well -flushing ware that just can wash with the efflux pumping with the concentric oil pipe of bilayer to have double -current tap that say and the free rotation, be connected and possess central passage and annular with tap. The utility model discloses can be at well well -flushing sand washing in -process, satisfy spurt reinforce, prop -carrying capacity strong, overcome technological requirement such as stratum low pressure leakage, its well -flushing ware that has negative pressure pumping function can be relieved the near wellbore zone to a certain extent and block up.
Description
Technical field
The utility model relates to the well-flushing sand washing field of oilfield oil well, particularly a kind of concentric oil tubes well-flushing sand flushing device of oil-water well and method.
Background technology
Along with deepening continuously of oilfield exploitation, oil field water demand gets more and more, the quantity of well (oil well) also significantly increases, and shakes out or mechanical admixture blocks the fault caused and also gets more and more because of shaft bottom, and the well-flushing sand washing workload of well (oil well) also constantly increases.And at the low pressure height negative well (oil well) of major diameter cased hole completion, conventional direct circulation or return circulation well cleanup sand washing mode, shaft bottom kick and prop-carrying capacity are always difficult to take into account.
Utility model content
The purpose of this utility model is to provide a kind of well-flushing sand flushing device, meet that kick is strong, prop-carrying capacity is strong, overcome the technological requirements such as stratum low pressure leakage, its well-washing device with negative pressure pumping function can remove near wellbore zone blocking to a certain extent, high well (oil well) the well-flushing desilting of oozing of the low pressure being particularly suitable for major diameter cased hole completion.
For achieving the above object, the utility model adopts the first technical scheme: a kind of well-flushing sand flushing device, and it comprises: have dual channel and rotatable water tap, to be connected and to possess central passage with the double-deck concentric oil tubes of annular flow channels and be connected with double-deck concentric oil tubes and well-washing device that is flushable and jet pumping with water tap.
On the basis of the first technical scheme, comprise following attached technical scheme further:
Described water tap has independently feed liquor and returning fluid's passage, and is connected with central passage with the annular flow channels of double-deck concentric oil tubes respectively.
Described water tap comprises the lifting sub being positioned at top, the multithread joint be connected with lifting sub, be connected with high pressure pump truck pump and be connected with multithread joint and the well-flushing import of feed pathway is provided, to be connected with multithread joint and the well-flushing be positioned at below well-flushing import exports, be fastened on the multithread joint week water tap of side cap, with water tap and the pressure-loaded bearing of cap abutting contact, be connected with multithread connector center and export with well-flushing and be connected and the upper center tube of returning fluid's passage is provided, and with to be arranged on outside multithread joint and to be connected and the shell arranged around central tube.
Described double-deck concentric oil tubes comprises tubing coupling, the inner pipe joint be connected with upper center tube, the lower center tube be connected with inner pipe joint, the outer tube be connected with tubing coupling bottom that top is connected with water tap and is arranged on outer tube bottom and the righting be set on lower center tube cap.
Described well-washing device comprises the top connection be connected with outer tube, the urceolus be connected with top connection, the anemostat be connected with lower center tube, the tap be connected with anemostat, be arranged in tap and the jet nozzle be connected with anemostat, with the lower contact be connected bottom urceolus, wherein outer tube inner chamber holds anemostat, and urceolus bottom is provided with the opening of linking up jet nozzle and cannula cavity.
Be processed with longitudinal passageway bridge in described well-washing device top connection to be communicated with the annular flow channels of double-deck concentric oil tubes, top connection top is connected through the outer tube of tubing round thread with double-deck concentric oil tubes, top connection bottom is connected with urceolus through screw thread, and the sealing ring arranged in it seals lower center tube and the anemostat of double-deck concentric oil tubes; Tap internal whorl connects anemostat and jet nozzle respectively, and its external screw-thread connects urceolus and lower contact respectively; Lower contact bottom centre has spray-hole.
The injection direction of described jet nozzle is contrary with the injection direction of spray-hole, and its sectional area is greater than the sectional area of spray-hole, the center of jet nozzle and the center superposition of spray-hole.
For achieving the above object, the utility model adopts the second technical scheme: a kind of well-flushing sand flushing device, and it comprises: have dual channel and rotatable water tap, be connected with water tap and possess the double-deck concentric oil tubes of central passage and annular flow channels, and be connected and flushable and well-washing device that is jet pumping with double-deck concentric oil tubes, described water tap comprises the lifting sub being positioned at top, the multithread joint be connected with lifting sub, be connected with high pressure pump truck pump and be connected with multithread joint and the well-flushing import of feed pathway is provided, to be connected with multithread joint and the well-flushing be positioned at below well-flushing import exports, be fastened on the multithread joint week water tap of side cap, with water tap and the pressure-loaded bearing of cap abutting contact, be connected with multithread connector center and export with well-flushing and be connected and the upper center tube of returning fluid's passage is provided, and with to be arranged on outside multithread joint and to be connected and the shell arranged around central tube, described double-deck concentric oil tubes comprises the tubing coupling that top is connected with water tap, the inner pipe joint be connected with upper center tube, the lower center tube be connected with inner pipe joint, the outer tube be connected with tubing coupling bottom, and be arranged on outer tube bottom and the righting be set on lower center tube cap, described well-washing device comprises the top connection be connected with outer tube, the urceolus be connected with top connection, the anemostat be connected with lower center tube, the tap be connected with anemostat, be arranged in tap and the jet nozzle be connected with anemostat, with the lower contact be connected bottom urceolus, wherein outer tube inner chamber holds anemostat, and urceolus bottom is provided with the opening of linking up jet nozzle and cannula cavity.
The utility model advantage is:
1, concentric oil tubes central passage is returning fluid's passage, and area of passage is little, and prop-carrying capacity is strong; 2, strong to the kick in shaft bottom; 3, can sewage at the bottom of out well (comprising the mulling liquid of suspension solid phase and mud etc.), produce stronger negative pressure, improve the liquid speed of telling on stratum, to remove the blocking of the nearly well band in stratum.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the cross-sectional schematic of water tap in the utility model;
Fig. 2 is the cross-sectional schematic of well-washing device in the utility model;
Fig. 3 is the cross-sectional schematic of the utility model assembled state.
Detailed description of the invention
Embodiment: as Figure 1-3, for the utility model provides a kind of specific embodiment of well-flushing sand flushing device, it comprises double-deck concentric oil tubes, the well-washing device be connected with double-deck concentric oil tubes bottom and the water supply well sleeve pipe 19 be arranged on water supply well that water tap, top are connected with water tap.Wherein there is long-pending sand 18 bottom water supply well sleeve pipe 19.
Water tap comprises the lifting sub 1 being positioned at top, the multithread joint 4 be connected with lifting sub 1, be connected with high pressure pump truck pump and the well-flushing import 2 be connected with multithread joint 4, to be connected with multithread joint 4 and the well-flushing be positioned at below well-flushing import 2 exports 3, be fastened on the water tap of multithread joint 4 weeks sides and cap 5, with water tap and the pressure-loaded bearing 6 of cap 5 abutting contact, be connected with multithread joint 4 center and export 3 upper center tubes be connected 7 with well-flushing, and with to be arranged on outside multithread joint 4 and to be connected and the shell 100 arranged around upper center tube 7.Wherein well-flushing import 2, well-flushing export 3 welded and installed on multithread joint 4, and its runner is separate; Multithread joint 4 bottom is provided with two pressure-loaded bearings 6, and by water tap and cap 5 is limited in shell 100; Pressure-loaded bearing 6 makes water tap still can horizontally rotate easily when bearing very high axial tension, connected double-layer concentric oil tubes of being more convenient for.
Double-deck concentric oil tubes comprises tubing coupling 8, the inner pipe joint 9 be connected with upper center tube 7, the lower center tube 10 be connected with inner pipe joint 9, the outer tube 20 be connected with tubing coupling 8 bottom that top is connected with water tap and is arranged on outer tube 20 bottom and the righting be set on lower center tube 10 cap 11; Lower center tube 10 is connected through sealing thread with inner pipe joint 9, and its weight is born by the step in tubing coupling 8; Righting cap 11 is threadedly connected to bottom lower center tube 10, the step in it and tubing coupling 8 limits the axial jump of lower center tube 10 jointly; Form annular channel 202 between lower center tube 10 and outer tube 20, after double-deck concentric oil tubes connects, its annular channel 202 all has corresponding sealing ring to seal to the center flow channels of lower center tube 10, separately can not be communicated with.
Well-washing device comprises the top connection 11 be connected with outer tube 20, the urceolus 12 be connected with top connection 11, the anemostat 13 be connected with lower center tube 10, the tap 14 be connected with anemostat 13, be arranged in tap 14 and the jet nozzle 15 be connected with anemostat 13, with the lower contact 16 be connected bottom urceolus 12.Wherein be processed with longitudinal passageway bridge 110 in top connection 11 to be communicated with the annular channel 202 of double-deck concentric oil tubes, top is connected with the outer tube 20 of double-deck concentric oil tubes through tubing round thread, bottom is connected with urceolus 12 through screw thread, the central tube 7 of the sealing ring encapsulates concentric oil pipe arranged in it and anemostat 13; Tap 14 internal whorl connects anemostat 13 and jet nozzle 15 respectively, and its external screw-thread connects urceolus 12 and lower contact 16 respectively; The spray-hole 17 of diameter is had bottom lower contact 16.
During work, the high pressure flushing liquid that high pressure pump truck pumps, when flushing fluid flows to well-washing device, only have small part to spray from spray-hole 17 and impact long-pending sand 18, major part upwards sprays at a high speed from jet nozzle 15 and produces negative pressure, realize pumping function, enter from the well-flushing import 2 of water tap, through the inside bridge-type path 10 2 of water tap, inner bridge-type path 10 2 refers to have at one the flow channels that the heavy wall of the tubular body of certain wall thickness is processed vertically, its diameter is less than tubular body wall thickness, and passageway bridge can not directly be communicated with tubular body central passage, enter the annular channel 202 of double-deck concentric oil tubes again, and longitudinal passageway bridge 110 of well-washing device is arrived downwards along this annular channel 202, enter into the urceolus annular channel 120 of urceolus 12 again, then the passageway bridge 140 outside anemostat 13 arrives the inner chamber 160 of lower contact 16, a small amount of flushing fluid is from the ejection at a high speed of the spray-hole 17 bottom well-washing device, because ejiction opening sectional area is little, thus there is very high flow velocity, kick is strong, the sand setting in easy activation shaft bottom or other mechanical particle, and most flushing fluid upwards sprays from jet nozzle 15, and the sectional area of jet nozzle 15 is greater than the sectional area of spray-hole 17, the liquid of ejection has quite high flow velocity, because of fluid friction effect, very high negative pressure is produced around jet nozzle 15, the sewage of surrounding is sucked well-washing device through opening 142 and mixes in anemostat 13 with flushing fluid by this negative pressure, and through the lower center tube 10 of double-deck concentric oil tubes, upper center tube 7, finally export 3 by well-flushing and extract ground out.Due to the negative pressure swabbing action of well-washing device, the liquid speed of telling on stratum improves, and nearly being blocked in of well band in stratum is dredged to a certain extent.
Certain above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, all should be encompassed within protection domain of the present utility model.
Claims (8)
1. a well-flushing sand flushing device, is characterized in that it comprises: have dual channel and rotatable water tap, to be connected and to possess central passage with the double-deck concentric oil tubes of annular flow channels and be connected with double-deck concentric oil tubes and well-washing device that is flushable and jet pumping with water tap.
2. a kind of well-flushing sand flushing device according to claim 1, is characterized in that, described water tap has independently feed liquor and returning fluid's passage, and is connected with central passage with the annular flow channels of double-deck concentric oil tubes respectively.
3. a kind of well-flushing sand flushing device according to claim 2, it is characterized in that, described water tap comprises the lifting sub being positioned at top, the multithread joint be connected with lifting sub, be connected with high pressure pump truck pump and be connected with multithread joint and the well-flushing import of feed pathway is provided, to be connected with multithread joint and the well-flushing be positioned at below well-flushing import exports, be fastened on the multithread joint week water tap of side cap, with water tap and the pressure-loaded bearing of cap abutting contact, be connected with multithread connector center and export with well-flushing and be connected and the upper center tube of returning fluid's passage is provided, and with to be arranged on outside multithread joint and to be connected and the shell arranged around central tube.
4. a kind of well-flushing sand flushing device according to claim 3, it is characterized in that, described double-deck concentric oil tubes comprises tubing coupling, the inner pipe joint be connected with upper center tube, the lower center tube be connected with inner pipe joint, the outer tube be connected with tubing coupling bottom that top is connected with water tap and is arranged on outer tube bottom and the righting be set on lower center tube cap.
5. a kind of well-flushing sand flushing device according to claim 4, it is characterized in that, described well-washing device comprises the top connection be connected with outer tube, the urceolus be connected with top connection, the anemostat be connected with lower center tube, the tap be connected with anemostat, be arranged in tap and the jet nozzle be connected with anemostat, with the lower contact be connected bottom urceolus, wherein outer tube inner chamber holds anemostat, and urceolus bottom is provided with the opening of linking up jet nozzle and cannula cavity.
6. a kind of well-flushing sand flushing device according to claim 5, it is characterized in that, be processed with longitudinal passageway bridge in described well-washing device top connection to be communicated with the annular flow channels of double-deck concentric oil tubes, top connection top is connected through the outer tube of tubing round thread with double-deck concentric oil tubes, top connection bottom is connected with urceolus through screw thread, and the sealing ring arranged in it seals lower center tube and the anemostat of double-deck concentric oil tubes; Tap internal whorl connects anemostat and jet nozzle respectively, and its external screw-thread connects urceolus and lower contact respectively; Lower contact bottom centre has spray-hole.
7. a kind of well-flushing sand flushing device according to claim 6, it is characterized in that, the injection direction of described jet nozzle is contrary with the injection direction of spray-hole, and its sectional area is greater than the sectional area of spray-hole, the center of jet nozzle and the center superposition of spray-hole.
8. a well-flushing sand flushing device, is characterized in that it comprises: have dual channel and rotatable water tap, be connected with water tap and possess the double-deck concentric oil tubes of central passage and annular flow channels, and be connected and flushable and well-washing device that is jet pumping with double-deck concentric oil tubes, described water tap comprises the lifting sub being positioned at top, the multithread joint be connected with lifting sub, be connected with high pressure pump truck pump and be connected with multithread joint and the well-flushing import of feed pathway is provided, to be connected with multithread joint and the well-flushing be positioned at below well-flushing import exports, be fastened on the multithread joint week water tap of side cap, with water tap and the pressure-loaded bearing of cap abutting contact, be connected with multithread connector center and export with well-flushing and be connected and the upper center tube of returning fluid's passage is provided, and with to be arranged on outside multithread joint and to be connected and the shell arranged around central tube, described double-deck concentric oil tubes comprises the tubing coupling that top is connected with water tap, the inner pipe joint be connected with upper center tube, the lower center tube be connected with inner pipe joint, the outer tube be connected with tubing coupling bottom, and be arranged on outer tube bottom and the righting be set on lower center tube cap, described well-washing device comprises the top connection be connected with outer tube, the urceolus be connected with top connection, the anemostat be connected with lower center tube, the tap be connected with anemostat, be arranged in tap and the jet nozzle be connected with anemostat, with the lower contact be connected bottom urceolus, wherein outer tube inner chamber holds anemostat, and urceolus bottom is provided with the opening of linking up jet nozzle and cannula cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521013198.3U CN205189826U (en) | 2015-12-08 | 2015-12-08 | Well -flushing sand washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521013198.3U CN205189826U (en) | 2015-12-08 | 2015-12-08 | Well -flushing sand washing device |
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| Publication Number | Publication Date |
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| CN205189826U true CN205189826U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521013198.3U Active CN205189826U (en) | 2015-12-08 | 2015-12-08 | Well -flushing sand washing device |
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| CN (1) | CN205189826U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332675A (en) * | 2015-12-08 | 2016-02-17 | 金湖县支点石油科技有限责任公司 | Well clean-up sand washing device and method |
| CN108266140A (en) * | 2018-01-15 | 2018-07-10 | 中国石油天然气股份有限公司 | Suction type vortex well flushing device |
| CN109132317A (en) * | 2017-06-27 | 2019-01-04 | 中国石油天然气集团公司 | A kind of sand-removal device for underground water seal pit hole storage cavern sleeve |
| CN111287693A (en) * | 2018-12-06 | 2020-06-16 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
-
2015
- 2015-12-08 CN CN201521013198.3U patent/CN205189826U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332675A (en) * | 2015-12-08 | 2016-02-17 | 金湖县支点石油科技有限责任公司 | Well clean-up sand washing device and method |
| CN109132317A (en) * | 2017-06-27 | 2019-01-04 | 中国石油天然气集团公司 | A kind of sand-removal device for underground water seal pit hole storage cavern sleeve |
| CN108266140A (en) * | 2018-01-15 | 2018-07-10 | 中国石油天然气股份有限公司 | Suction type vortex well flushing device |
| CN108266140B (en) * | 2018-01-15 | 2020-09-18 | 中国石油天然气股份有限公司 | Suction type vortex well flushing device |
| CN111287693A (en) * | 2018-12-06 | 2020-06-16 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
| CN111287693B (en) * | 2018-12-06 | 2022-06-03 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
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