CN102287180B - Self-positioning underground flow metering and adjusting instrument - Google Patents
Self-positioning underground flow metering and adjusting instrument Download PDFInfo
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- CN102287180B CN102287180B CN201110187092.5A CN201110187092A CN102287180B CN 102287180 B CN102287180 B CN 102287180B CN 201110187092 A CN201110187092 A CN 201110187092A CN 102287180 B CN102287180 B CN 102287180B
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Abstract
The invention discloses a self-positioning underground flow metering and adjusting instrument, which comprises an underground flow metering and adjusting mechanism and a clamping-proof electric positioning mechanism. The self-positioning underground flow metering and adjusting instrument is cylindrical; the underground flow metering and adjusting mechanism is arranged on the upper part and the clamping-proof electric positioning mechanism is arranged on the lower part; or the clamping-proof electric positioning mechanism is arranged on the upper part and the underground flow metering and adjusting mechanism is arranged on the lower part; the clamping-proof electric positioning mechanism and the underground flow metering and adjusting mechanism are connected with a switch fixing head; the underground flow metering and adjusting instrument is accurately positioned at a connected position of an underground water injection flowmeter through the clamping-proof electric positioning mechanism, so that the underground flow metering and adjusting instrument is firmly connected with the underground water injection flowmeter; and the underground water injection flowmeter is accurately debugged by the underground flow metering and adjusting instrument, so that water injection is carried out according to injection allocation parameters, a water injection scheme is smoothly implemented, and the water injection efficiency is improved.
Description
Technical field
The present invention relates to a kind of to underground water-injection downhole flowmeter flow measuring and adjusting instrument, specifically a kind of self-positioning underground flow measurement and adjustment instrument.
Background technology
The water injection well in oil field will periodically measure the manufacturing parameter of water filling, along with the development of water injection technology requires improving constantly of measuring accuracy, injection flow method of measurement is improved and flow meter development is the core that measuring accuracy improves, past is all the object that reaches water injection rate metering and regulate with production mandrel and water nozzle, but this method is not high to water injection rate measuring accuracy, and it is more difficult to change flow-rate ratio, to water nozzle be pulled out through complicated operation, again the water nozzle that will change is plunged into, because of the water nozzle the knocked down position of arriving, good seal is bad, also want complicated process certification, in addition process certification precision is low cause injection allocation amount and real fluence error very large, can not meet the requirement of high-precision measuring water injection rate, adopted now electromagnetic flowmeter, injection flow measuring accuracy has improved, but produce electromagnetic flowmeter Flow-rate adjustment problem thereupon, applicant has developed a kind of downhole flow adjusting apparatus thereupon, this downhole flow adjusting apparatus has solved the electromagnetic flowmeter Flow-rate adjustment problem to each water filling layer, but can not solve the orientation problem of downhole flow measurement and adjustment instrument, applicant has developed the electronic locator of clamping-proof type thereupon, coordinate downhole flow adjusting apparatus to complete the work of underground electromagnetic flow meter Flow-rate adjustment.
Summary of the invention
The object of this invention is to provide a kind of self-positioning underground flow measurement and adjustment instrument, solve the problem that the survey of underground flooding flowmeter for oil field flow is adjusted, meet the needs that regulate waterflood project to formulate and adjust.
Technical scheme of the present invention is achieved in the following ways:
The present invention includes downhole flow and survey regulating mechanism and the electronic detent mechanism of clamping-proof type, it is characterized in that self-positioning underground flow measurement and adjustment instrument is made as cylindrical, downhole flow is surveyed regulating mechanism upper, the electronic detent mechanism of clamping-proof type under, or the electronic detent mechanism of clamping-proof type is upper, downhole flow survey regulating mechanism under, between by switching gland connect, downhole flow is surveyed the parts that are provided with from bottom to top of regulating mechanism and the annexation gland of transferring from bottom to top and is threaded with fixing screw-casing, fixing screw-casing is threaded with large sheath, large sheath bottom is provided with torsion cover main body, and torsion cover main body middle part cover has little sheath, lower inside at fixing screw-casing is fixed with DC micromotor and planetary reducer by motor cylinder, be fixedly connected with short leading screw with planetary reducer output shaft, slip collision block has been threaded on short leading screw, the short leading screw lower end Torque sleeve that has been threaded, the Torque sleeve torsion shaft that has been threaded, between torsion shaft and fixing screw-casing, be provided with thrust bearing, in thrust metal top, be provided with sleeve gasket, in sleeve gasket top, be provided with torsion axle sleeve, torsion axle sleeve is connected with long lead screw by pin, the long lead screw sliding connection block that has been threaded, outer end, sliding connection block both sides is inserted and is connected mutually with fixing screw-casing by two vertical slot that are located at fixing screw-casing top symmetry, helicla flute and torsion axle sleeve slotting connection mutually that sliding connection block both sides middle inside puts by being located at torsion shaft, torsion axle sleeve is connected with torsion cover main body by pin, the electronic detent mechanism of clamping-proof type comprises connector, locator casing and drive disk assembly, locator casing is made as cylindrical, in locator casing, by order, be provided with the pressure ring being threaded from bottom to top, sliding needle stand, motor stationary magazine creel is threaded with sliding needle stand, be located at DC micromotor and planetary reducer in motor stationary magazine creel, the screw mandrel being connected with planetary reducer axle, the switch collision block of screw mandrel bottom is threaded, the torsion cover being connected with switch collision block pin, insert the guiding spiral shell piece that torsion cover helicla flute is interior with motor stationary magazine creel top cannelure and be connected in wire rod thread, overlap with torsion the switch shaft that top is nested, bottom is enclosed within the connector being connected on switch shaft and with locator casing screw thread, be enclosed within the locating piece casing on connector top, be enclosed within locating piece casing bottom and be connected the locating piece of the gathering sill location on head and the stage clip between locating piece and switching gland, connector is threaded with the switching gland that downhole flow is surveyed regulating mechanism lower end, and locating piece and switch shaft are slidably matched.
Switching gland is made as cylindrical, lower diameter is little, upper diameter is large, on the top of reducing platform, be provided with male thread and outer ring groove, in the top of reducing platform, week side is arranged with 4 grooves of fixing linking arm, the upper end of upper linking arm is connected with groove pin, middle part is provided with inside groove, in groove, be provided with helical spring, helical spring lower end be supported on switching gland groove at the bottom of on, in upper linking arm bottom, be provided with guide wheel, be connected with upper linking arm bearing pin, top in switching gland is provided with pin hole and male thread, center in switching gland is provided with centre bore, centre bore bottom diameter is greater than middle part diameter, upper diameter is greater than middle part and bottom diameter, in the centre bore of bottom, be provided with annular groove.
Fixing screw-casing is made as cylindrical, bottom is provided with pin hole and box thread, upper diameter is less than upper diameter, in the upper end on top, be provided with outer ring groove, middle and lower part on top has vertical slot, the large middle part of the bottom internal diameter internal diameter of fixing screw-casing, bottom internal diameter is greater than the internal diameter on middle part internal diameter and top.
Large sheath is made as cylindrical, and upper end internal diameter is little, and in upper end, periphery is provided with annular groove, and interior week is provided with annular groove, in the bottom of large sheath, is provided with box thread.
Torsion shaft cover is made as cylindrical, and lower diameter is greater than upper diameter, and bottom is provided with centre bore, in centre bore periphery, is provided with spiral open slot, and upper end is provided with the pin hole being connected with torsion cover main body pin.
Torsion cover main body is made as cylindrical, and center is provided with centre bore, is provided with 4 locating detent grooves of symmetry in bottom to middle part periphery, is provided with locating detent in groove; The upper end of locating detent is connected with locating detent groove bearing pin, and locating detent middle part is provided with inside groove, is provided with helical spring in groove, and on helical spring is supported at the bottom of the groove of torsion cover main body, torsion cover main body top is provided with box thread.
Motor stationary magazine creel is made as cylindrical, bottom is provided with left-hand thread box thread, middle and upper part is provided with the undergauge section of internal diameter and external diameter, undergauge pars infrasegmentalis inner chamber is made as the installation cavity of DC micromotor and planetary reducer, on the top of installation cavity, be provided with lubrication oil seepage flow hole, in undergauge section upper periphery, be provided with two symmetrical cannelures, upper end is provided with the screw hole being connected with connector lower end.
Switch collision block is made as cylindrical, and the little lower diameter of upper diameter is large, and interior week is provided with the box thread coordinating with screw mandrel, in upper periphery, is provided with torsion and overlaps the pin hole being connected, and upper surface is provided with the impact switch of motor.
Torsion cover is made as cylindrical, and lower end periphery is provided with pin hole, and lower, outer perimeter is provided with the spiral open slot of guiding spiral shell piece operation, and upper end is made as internal diameter undergauge section, at the limiting stand of a switch shaft of undergauge Duan Shangshe.
Connector is made as cylindrical, and top is provided with box thread, and bottom is provided with male thread, and center is provided with the centre bore of switch shaft operation, and middle part week side is arranged with four locating piece gathering sills.
Switch shaft is established cylindrical, and center is provided with centre bore, and middle and lower part is provided with up-small and down-big hole enlargement conical section.
The invention solves the location of downhole flow measurement and adjustment instrument and the flow rate test of underground flooding flowmeter is regulated to problem.Detent mechanism is quick on the draw, accurate positioning, downhole flow measurement and adjustment instrument adjust precision high to the survey of underground electromagnetic flow meter, has guaranteed that waterflood project effectively implements.
Accompanying drawing explanation
Accompanying drawing-structural representation of the present invention
The fixing screw-casing 6-thrust bearing 7-slip collision block 8-switching of the large sheath 5-of the 1-torsion cover main body 2-little sheath 3-locating detent 4-upper short leading screw 17-of the linking arm 10-guide wheel 11-torsion axle sleeve 12-long lead screw 13-sliding connection block 14-sleeve gasket 15-Torque sleeve 16-motor cylinder 18-hold-down screw 19-guide wheel pin 20-connector 21-locating piece sheath 22-locating piece 23-screw 24-guiding spiral shell piece 25-DC micromotor of gland 9-and the sliding needle stand 28-of planetary reducer 26-locator casing 27-pressure ring 29-stage clip 30-small pressure spring 31-switch shaft 32-torsion cover 33-switch collision block 34-screw mandrel 35-motor stationary magazine creel in figure
The specific embodiment
For further disclosing technical scheme of the present invention, below in conjunction with Figure of description, by embodiment, elaborate:
The present invention includes downhole flow and survey regulating mechanism and the electronic detent mechanism of clamping-proof type, it is characterized in that self-positioning underground flow measurement and adjustment instrument is made as cylindrical, downhole flow is surveyed regulating mechanism upper, the electronic detent mechanism of clamping-proof type under, or the electronic detent mechanism of clamping-proof type is upper, downhole flow survey regulating mechanism under, between by switching gland 8 connect, downhole flow survey regulating mechanism is provided with from bottom to top the gland 8 of transferring from bottom to top and is threaded with fixing screw-casing 5, and fixing screw-casing is threaded with large sheath 4, and large sheath bottom is provided with torsion cover main body 1, and torsion overlaps main body middle part cover little sheath 2, lower inside at fixing screw-casing is fixed with DC micromotor and planetary reducer 25 by motor cylinder 17, be fixedly connected with short leading screw 16 with planetary reducer output shaft, slip collision block 7 has been threaded on short leading screw, the short leading screw lower end Torque sleeve 15 that has been threaded, the Torque sleeve torsion shaft that has been threaded, between torsion shaft and fixing screw-casing, be provided with thrust bearing 6, in thrust metal top, be provided with sleeve gasket 14, the torsion axle sleeve 11 being provided with in sleeve gasket top, torsion shaft is connected with long lead screw 12 by pin, the long lead screw sliding connection block 13 that has been threaded, outer end, sliding connection block both sides is inserted and is connected mutually with fixing screw-casing 5 by two vertical slot that are located at fixing screw-casing 5 top symmetries, sliding connection block 13 both sides middle inside are inserted and are connected mutually with torsion axle sleeve 11 by the helicla flute being located on torsion axle sleeve 11, torsion axle sleeve is connected with torsion cover main body 1 by pin, the electronic detent mechanism of clamping-proof type comprises connector 20, locator casing 26 and drive disk assembly, locator casing 26 is made as cylindrical, in locator casing, by order, be provided with the pressure ring 28 being threaded from bottom to top, sliding needle stand 27, motor stationary magazine creel 35 is threaded with sliding needle stand, be located at DC micromotor and planetary reducer in motor stationary magazine creel, the screw mandrel 34 being connected with planetary reducer axle, the switch collision block 33 of screw mandrel bottom is threaded, the torsion cover 32 being connected with switch collision block pin, insert the guiding spiral shell piece 24 that torsion cover helicla flute is interior with motor stationary magazine creel top cannelure and be connected in wire rod thread, overlap with torsion the switch shaft 31 that top is nested, bottom is enclosed within the connector 20 being connected on switch shaft and with locator casing screw thread, be enclosed within the locating piece sheath 21 on connector top, be enclosed within locating piece sheath bottom and be connected the locating piece 22 of the gathering sill location on head and the stage clip 29 between locating piece and switching gland 8, connector is threaded with the switching gland 8 that downhole flow is surveyed regulating mechanism lower end, and locating piece and switch shaft are slidably matched.
The switching gland 8 that downhole flow is surveyed regulating mechanism bottom is connected with connector 20 screw threads on the electronic detent mechanism of down-hole clamping-proof type top.When behind the electronic detent mechanism of down-hole clamping-proof type location, downhole flow is surveyed the upper link arm 9 of regulating mechanism and is just inserted in the anti-vertical slot that revolves fuse of integrated concentric injection well downhole flow regulator with guide wheel 10.When ground control system is sent instruction, the minitype motor driving planetary reducer 25 of downhole flow measurement and adjustment instrument rotates.The output shaft of planetary reducer just drives short leading screw 16 to rotate, short leading screw lower end is connected with Torque sleeve 15 long lead screws 12, on long lead screw, be equipped with and be slidably connected piece 13, the two ends that are slidably connected piece are inserted in respectively in the open slot of fixing screw-casing 5 and torsion axle sleeve 11.On short leading screw 16, slip collision block 7 is housed, in slip collision block, has screw thread to match and connect with the fine thread of short leading screw 16.In length leading screw 12 rotation processes, the screw thread being slidably connected in piece 13 on long lead screw matches with the screw thread of long lead screw 12 again, and move up and down in the rotating process of long lead screw, because the outer end of sliding connection block 13 moves up and down and rotates along fixing screw-casing 5, must be with torsion axle sleeve 11 to rotate, torsion cover 11 is connected with torsion cover main body 1 again, in torsion cover main body 1, locating detent 3 has been installed again, locating detent 3 has been inserted in again (flow meter in having gone into the well) in the vertical slot on the rotation fuse of integrated concentric water distribution mouthpart, will slowly rotate by driven rotary fuse like this, the rotation of rotation fuse just can be controlled the size of the water yield of integrated concentric injection well downhole flow regulator, thus the adjusting while reaching laminated distributor under well water injection manifold.Also object and the requirement of the reasonable water filling of water injection well layering have just been met.The slip collision block 7 of little leading screw is used for controlling the forward and reverse power supply travel switch of motor, has guaranteed that the forward and reverse power supply of motor and switch stop.The key technology that downhole flow is surveyed regulating mechanism maximum is that the rotary speed producing after planetary reducer slows down is reduced again, torsion amplifies again, on the original basis of planetary reducer, increasing torsion more than 150 times, make rotary speed reduce by 150 times, met the work requirements of the concentric injection well downhole flow regulator of one (electromagnetic flowmeter).Effectively having improved the requirement of the meticulous water filling of water injection well layering, is the reasonable water filling in oil field, and long-acting water filling provides necessary reliable means, and technique has reached world lead level.
Claims (8)
1. a self-positioning underground flow measurement and adjustment instrument, comprise downhole flow survey regulating mechanism and the electronic detent mechanism of clamping-proof type, it is characterized in that: self-positioning underground flow measurement and adjustment instrument is made as cylindrical, downhole flow is surveyed regulating mechanism upper, the electronic detent mechanism of clamping-proof type under, or the electronic detent mechanism of clamping-proof type is upper, downhole flow survey regulating mechanism under, between by switching gland, connected, the parts that downhole flow survey regulating mechanism is provided with from bottom to top and annexation are followed successively by from bottom to top switching gland and are threaded with fixing screw-casing, fixing screw-casing is threaded with large sheath, large sheath bottom is provided with torsion cover main body, and torsion cover main body middle part cover has little sheath, lower inside at fixing screw-casing is fixed with DC micromotor and planetary reducer by motor cylinder, be fixedly connected with short leading screw with planetary reducer output shaft, slip collision block has been threaded on short leading screw, the short leading screw lower end Torque sleeve that has been threaded, the Torque sleeve torsion shaft that has been threaded, between torsion shaft and fixing screw-casing, be provided with again thrust bearing, in thrust metal top, be provided with sleeve gasket, in sleeve gasket top, be provided with torsion axle sleeve, torsion axle sleeve is connected with long lead screw by pin, the long lead screw sliding connection block that has been threaded, outer end, sliding connection block both sides is inserted and is connected mutually with fixing screw-casing by two vertical slot that are located at fixing screw-casing top symmetry, helicla flute and torsion axle sleeve slotting connection mutually that sliding connection block both sides middle inside puts by being located at torsion shaft, torsion axle sleeve is connected with torsion cover main body by pin, the electronic detent mechanism of clamping-proof type comprises connector, locator casing and drive disk assembly, locator casing is made as cylindrical, in locator casing, by order, be provided with the pressure ring being threaded from bottom to top, sliding needle stand, motor stationary magazine creel is threaded with sliding needle stand, be located at DC micromotor and planetary reducer in motor stationary magazine creel, the screw mandrel being connected with planetary reducer axle, the switch collision block of screw mandrel bottom is threaded, the torsion cover being connected with switch collision block pin, insert the guiding spiral shell piece that torsion cover helicla flute is interior with motor stationary magazine creel top cannelure and be connected with wire rod thread, overlap with torsion the switch shaft that top is nested, bottom is enclosed within the connector being connected on switch shaft and with locator casing screw thread, be enclosed within the locating piece casing on connector top, be enclosed within locating piece casing bottom and be connected the locating piece of the gathering sill location on head and the stage clip between locating piece and switching gland, connector is threaded with the switching gland that downhole flow is surveyed regulating mechanism lower end, and locating piece and switch shaft are slidably matched.
2. self-positioning underground flow measurement and adjustment instrument according to claim 1, it is characterized in that: switching gland is made as cylindrical, lower diameter is little, upper diameter is large, on the top of reducing platform, be provided with male thread and outer ring groove, in the top of reducing platform, week side is arranged with 4 grooves of fixing linking arm, the upper end of upper linking arm is connected with groove pin, middle part is provided with inside groove, in groove, be provided with helical spring, helical spring lower end be supported on switching gland groove at the bottom of on, in upper linking arm bottom, be provided with guide wheel, be connected with upper linking arm bearing pin, top in switching gland is provided with pin hole and male thread, center in switching gland is provided with centre bore, centre bore bottom diameter is greater than middle part diameter, upper diameter is greater than middle part and bottom diameter, in the centre bore of bottom, be provided with annular groove.
3. self-positioning underground flow measurement and adjustment instrument according to claim 1, it is characterized in that: fixing screw-casing is made as cylindrical, bottom is provided with pin hole and box thread, in the upper end on top, be provided with outer ring groove, middle and lower part on top has vertical slot, and the bottom internal diameter of fixing screw-casing is greater than the internal diameter on middle part internal diameter and top.
4. self-positioning underground flow measurement and adjustment instrument according to claim 1, is characterized in that: large sheath is made as cylindrical, and upper end internal diameter is little, and in upper end, periphery is provided with annular groove, and interior week is provided with annular groove, in the bottom of large sheath, is provided with box thread.
5. self-positioning underground flow measurement and adjustment instrument according to claim 1, it is characterized in that: torsion shaft cover is made as cylindrical, and lower diameter is greater than upper diameter, and bottom is provided with centre bore, in centre bore periphery, be provided with spiral open slot, upper end is provided with the pin hole being connected with torsion cover main body pin.
6. self-positioning underground flow measurement and adjustment instrument according to claim 1, is characterized in that: torsion cover main body is made as cylindrical, and center is provided with centre bore, is provided with 4 locating detent grooves of symmetry in bottom to middle part periphery, is provided with locating detent in groove; The upper end of locating detent is connected with locating detent groove bearing pin, and locating detent middle part is provided with inside groove, is provided with helical spring in groove, and on helical spring is supported at the bottom of the groove of torsion cover main body, torsion cover main body top is provided with box thread.
7. self-positioning underground flow measurement and adjustment instrument according to claim 1, it is characterized in that: motor stationary magazine creel is made as cylindrical, bottom is provided with left-hand thread box thread, middle and upper part is provided with the undergauge section of internal diameter and external diameter, undergauge pars infrasegmentalis inner chamber is made as the installation cavity of DC micromotor and planetary reducer, on the top of installation cavity, be provided with lubrication oil seepage flow hole, in undergauge section upper periphery, be provided with two symmetrical cannelures, motor stationary magazine creel upper end is provided with the screw hole being connected with connector lower end.
8. self-positioning underground flow measurement and adjustment instrument according to claim 1, it is characterized in that: switch collision block is made as cylindrical, the little lower diameter of upper diameter is large, interior week is provided with the box thread coordinating with screw mandrel, in upper periphery, be provided with torsion and overlap the pin hole being connected, upper surface is provided with the impact switch of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110187092.5A CN102287180B (en) | 2011-06-24 | 2011-06-24 | Self-positioning underground flow metering and adjusting instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110187092.5A CN102287180B (en) | 2011-06-24 | 2011-06-24 | Self-positioning underground flow metering and adjusting instrument |
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| Publication Number | Publication Date |
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| CN102287180A CN102287180A (en) | 2011-12-21 |
| CN102287180B true CN102287180B (en) | 2014-04-30 |
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| CN201110187092.5A Expired - Fee Related CN102287180B (en) | 2011-06-24 | 2011-06-24 | Self-positioning underground flow metering and adjusting instrument |
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| CN103244098B (en) * | 2013-04-02 | 2016-01-13 | 中国石油天然气股份有限公司 | Low injection allocation amount water injection well layering flow tester |
| CN103924952B (en) * | 2014-05-08 | 2017-02-22 | 付吉平 | Pull plug type large-pressure-difference downhole layered water injection control device |
| CN105626038B (en) * | 2015-12-22 | 2022-01-28 | 东营市鑫吉石油技术有限公司 | Bidirectional sealing flow-collecting type flow regulator |
| CN108049867B (en) * | 2018-01-05 | 2020-12-18 | 嘉兴觅特电子商务有限公司 | Intelligent logging instrument for coal bed gas detection based on Internet of things |
| CN111472759A (en) * | 2020-06-02 | 2020-07-31 | 东营市创世石油测试新技术开发有限责任公司 | High-pressure dynamic sealing device for output shaft of water injection well measuring and adjusting instrument |
| CN113137213A (en) * | 2021-04-06 | 2021-07-20 | 东营市鑫吉石油技术有限公司 | Integrated device for testing, adjusting and checking sealing of separate injection well |
| CN113803586B (en) * | 2021-09-03 | 2023-05-30 | 杭州国家水电站大坝安全和应急工程技术中心有限公司 | Device capable of enabling inclinometry probe to horizontally rotate |
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| US4187919A (en) * | 1977-05-03 | 1980-02-12 | Diamant Boart | Cable-type core barrel |
| CN2727392Y (en) * | 2004-07-23 | 2005-09-21 | 上海嘉地仪器有限公司 | Downhole measuring and regulating apparatus with an overhead flowmeter |
| CN1940251A (en) * | 2005-09-28 | 2007-04-04 | 杨朝杰 | Intelligent seal-verifying flow adjustment and adjuster |
| CN201460865U (en) * | 2009-07-24 | 2010-05-12 | 长春锐利科技有限公司 | Well logging and regulating instrument of two flow meters arranged from top to bottom |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| BRPI0404380C1 (en) * | 2004-10-14 | 2008-07-15 | Malavazi Vedacoes Ind Ltda | housed mechanical seal enhancements for progressive cavity pumps |
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2011
- 2011-06-24 CN CN201110187092.5A patent/CN102287180B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187919A (en) * | 1977-05-03 | 1980-02-12 | Diamant Boart | Cable-type core barrel |
| CN2727392Y (en) * | 2004-07-23 | 2005-09-21 | 上海嘉地仪器有限公司 | Downhole measuring and regulating apparatus with an overhead flowmeter |
| CN1940251A (en) * | 2005-09-28 | 2007-04-04 | 杨朝杰 | Intelligent seal-verifying flow adjustment and adjuster |
| CN201460865U (en) * | 2009-07-24 | 2010-05-12 | 长春锐利科技有限公司 | Well logging and regulating instrument of two flow meters arranged from top to bottom |
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| CN102287180A (en) | 2011-12-21 |
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