CN104481447A - Quantitative water injection and pressure measuring composite stopper - Google Patents
Quantitative water injection and pressure measuring composite stopper Download PDFInfo
- Publication number
- CN104481447A CN104481447A CN201410758166.XA CN201410758166A CN104481447A CN 104481447 A CN104481447 A CN 104481447A CN 201410758166 A CN201410758166 A CN 201410758166A CN 104481447 A CN104481447 A CN 104481447A
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- overcoat
- pressure
- constant current
- current body
- pulling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/008—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a quantitative water injection and pressure measuring composite stopper. The quantitative water injection and pressure measuring composite stopper comprises a dropping-fishing assembly, a pressure measuring assembly and a quantitative water injection assembly, wherein the quantitative water injection assembly comprises a hollow valve core, a stable fluid upper jacket, stable fluid springs, a stable fluid middle jacket, a water charging nozzle, ceramic water nozzles, and a stable fluid lower jacket; the pressure measuring assembly comprises a communication module, a pressure meter jacket, an oil pipe pressure sensor, a casing pressure sensor, a pressure transfer pipe, a processor, and a power supply for supplying electric energy. By adopting the quantitative water injection and pressure measuring composite stopper, quantitative water injection and measurement of bottom layer pressure in a water injection process can be realized simultaneously.
Description
Technical field
The present invention relates to a kind of blanking plug, be specifically related to a kind of quantitative injection pressure measurement compound blanking plug.
Background technology
Existing quantitative blanking plug can only realize quantitative injection, can not monitor the strata pressure situation in the injecting process; And existing memory-type pressure meter can only monitor water filling section cut out situation downforce, the strata pressure in the injecting process cannot be monitored.In order to solve the problem can monitoring strata pressure under normal quantitative injection condition, have developed a kind of quantitative injection pressure measurement compound blanking plug.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, provide a kind of quantitative injection pressure measurement compound blanking plug, this blanking plug can realize the measurement of bottom pressure in quantitative injection and the injecting process simultaneously.
For achieving the above object, quantitative injection pressure measurement compound blanking plug of the present invention comprises pulling assembly, pressure measurement assembly and quantitative injection assembly;
Described quantitative injection assembly comprises hollow spool, overcoat on constant current body, determine fluid spring, overcoat in constant current body, upper water nozzle, overcoat under ceramic water nozzle and constant current body, in constant current body the two ends of overcoat to be socketed on constant current body in overcoat lower end and under constant current body overcoat upper end in, upper water nozzle and ceramic water nozzle to be set in turn in constant current body in overcoat vertically, hollow spool to be socketed on constant current body in overcoat, constant current body spring housing is connected to the side of hollow spool lower end, determine the upper end of fluid spring and lower end to be connected with the inwall of overcoat in the side of hollow spool and constant current body respectively, annular gap is had between the inwall of upper water nozzle upper end and the outer wall of hollow spool lower end, on constant current body overcoat sidewall on offer weep hole, under constant current body, the water inlet of overcoat lower end is successively through ceramic water nozzle, upper water nozzle and described annular gap are connected with weep hole,
Residing pressure measurement assembly comprises communication module, pressure gauge overcoat, tubing pressure sensor, casing pressure sensor, pressure tube, processor, and for providing the power supply of electric energy, on constant current body, the upper end of overcoat is socketed on the lower end of pressure gauge overcoat, the upper end of pressure gauge overcoat is socketed in the lower end of the external cover of pulling in pulling assembly, pressure tube, casing pressure sensor, processor and communication module are all positioned at pressure gauge overcoat, the lower end of pressure tube is connected with the movable upper end of hollow spool, casing pressure sensor is positioned at the upper end of pressure tube, gap is there is between the upper end of hollow spool and the lower end of pressure gauge overcoat, the side opening of pressure gauge overcoat is provided with pressure transmission hole, tubing pressure sensor is positioned at institute's pressure transmission hole, tubing pressure sensor is all connected with the input of processor with casing pressure sensor, the output of processor is connected with external equipment by communication module.
Described pulling assembly comprises fishing rod, pressure cap, fishing rod spring, bolt, the external cover of pulling, axle and cam, the middle part symmetry of the external cover of pulling offers two grooves, cam is between two grooves, and be fixed in the external cover of pulling by axle support, cam is provided with the short sharp locking face and long sharp locking face that can rotate in groove, torsion spring is provided with between the inwall of the outside of cam and the external cover of pulling, pressure cap is connected with the upper end of the external cover of pulling, the lower end of fishing rod is inserted in the external cover of pulling through pressure cap, bolt sleeve is connected on the side of fishing rod lower end, the side of fishing rod is connected with between pressure cap, the two ends of fishing rod spring are connected with bolt with pressure cap respectively, the lower end of fishing rod is connected on the short sharp locking face of cam.
Be threaded connection between the lower end of the external cover of described pulling and the outer set upper side of pressure gauge;
On the lower end of described pressure gauge overcoat and constant current body overcoat upper end between be threaded connection;
Be threaded connection between the lower end of described pressure gauge overcoat and the upper end of pressure tube.
In described constant current body on the upper end of overcoat and lower end and constant current body under the lower end of overcoat and constant current body overcoat upper end between be all threaded connection;
Phase clamping between described hollow spool with overcoat on constant current body, for playing axial limiting effect to hollow spool.
The upper end of described pressure cap and the external cover of pulling is threaded connection;
The side of described fishing rod is provided with the annular protrusion for playing position-limiting action, and annular protrusion is positioned at the inner side of pressure cap.
O-ring seal is provided with between described pressure tube and hollow spool.
Under described constant current body, the side of overcoat is provided with lower O RunddichtringO;
On described constant current body, the side of overcoat is provided with O RunddichtringO.
Some water nozzle packing rings are provided with between overcoat in described ceramic water nozzle and constant current body.
The present invention has following beneficial effect:
Quantitative injection pressure measurement compound blanking plug of the present invention in use, quantitative injection pressure measurement compound blanking plug of the present invention is placed in seating nipple, the liquid injecting stratum enters into overcoat under constant current body from the entrance of bottom, seating nipple inclined hole jacket bottom through constant current body, thus upwards flow out through ceramic water nozzle, stratum is entered through the inclined hole of seating nipple again after the annular gap between water nozzle and hollow spool and the upper outside weep hole put of constant current body are flowed out, when pressure one timing in the inclined hole of seating nipple, when seating nipple internal water flooding pressure increases, hollow spool compression is determined fluid spring and is moved up and down, thus the annular gap between hollow spool and upper water nozzle is reduced, thus realize the function of quantitative injection, side by side meter pressure overcoat on constant current body is delivered to hollow spool, be delivered on pressure tube through hollow spool again, inner via hole finally by pressure tube is delivered on casing pressure sensor, thus the pressure information on earth's surface is measured by pressure sensor, and described pressure information is delivered in processor, processor draws pressure curve according to described pressure information, passed by the pressure curve of communication module by drafting, simultaneously by the pressure of tubing pressure sensor measurement oil pipe, and passed by communication module, simple to operate, convenient, practicality is extremely strong.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the location diagram of the present invention's pressure tube 15 and hollow spool 16 under normal water injection pressure;
Fig. 3 is the location diagram of the present invention's pressure tube 15 and hollow spool 16 after water injection pressure raises;
Fig. 4 is the structural representation of the present invention when working.
Wherein, 1 is fishing rod, 2 is pressure cap, 3 is fishing rod spring 3, 4 is bolt, 5 is the external cover of pulling, 6 is axle, 7 is torsion spring, 8 is cam, 9 is pressure gauge overcoat, 10 is battery cavities cover, 11 is communication module, 12 is processor, 13 is tubing pressure sensor, 14 is casing pressure sensor, 15 is pressure tube, 16 is hollow spool, 17 is upper O RunddichtringO, 18 is overcoat on constant current body, 19 for determine fluid spring, 20 is overcoat in constant current body, 21 is upper water nozzle, 22 is ceramic water nozzle, 23 is water nozzle packing ring, 24 is overcoat under constant current body, 25 is lower O RunddichtringO, 26 is the inclined hole of seating nipple, 27 is the groove 27 in the inclined hole of seating nipple, 28 is the weep hole in the inclined hole of seating nipple.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1, Fig. 2, Fig. 3 and Fig. 4, quantitative injection pressure measurement compound blanking plug of the present invention comprises pulling assembly, pressure measurement assembly and quantitative injection assembly, described quantitative injection assembly comprises hollow spool 16, overcoat 18 on constant current body, determine fluid spring 19, overcoat 20 in constant current body, upper water nozzle 21, overcoat 24 under ceramic water nozzle 22 and constant current body, in constant current body the two ends of overcoat 20 to be socketed on constant current body in overcoat 18 lower end and under constant current body overcoat 24 upper end in, upper water nozzle 21 and ceramic water nozzle 22 to be set in turn in constant current body in overcoat 20 vertically, hollow spool 16 to be socketed on constant current body in overcoat 18, determine the side that fluid spring 19 is socketed on hollow spool 16 lower end, determine the upper end of fluid spring 19 and lower end to be connected with the inwall of overcoat 20 in the side of hollow spool 16 and constant current body respectively, annular gap is had between the inwall of upper water nozzle 21 upper end and the outer wall of hollow spool 16 lower end, on constant current body overcoat 18 sidewall on offer weep hole, under constant current body, the water inlet of overcoat 24 lower end is successively through ceramic water nozzle 22, upper water nozzle 21 and described annular gap are connected with weep hole, residing pressure measurement assembly comprises communication module 11, pressure gauge overcoat 9, tubing pressure sensor 13, casing pressure sensor 14, pressure tube 15, processor 12, battery cavities cover 10, and for providing the power supply of electric energy, power supply is arranged in described battery cavities cover 10, on constant current body, the upper end of overcoat 18 is socketed on the lower end of pressure gauge overcoat 9, the upper end of pressure gauge overcoat 9 is socketed in the lower end of the external cover 5 of pulling in pulling assembly, battery cavities cover 10, pressure tube 15, casing pressure sensor 14, processor 12 and communication module 11 are all positioned at pressure gauge overcoat 9, the lower end of pressure tube 15 is connected with the movable upper end of hollow spool 16, casing pressure sensor 14 is positioned at the upper end of pressure tube 15, gap is there is between the upper end of hollow spool 16 and the lower end of pressure gauge overcoat 9, the side opening of pressure gauge overcoat 9 is provided with pressure transmission hole, tubing pressure sensor 13 is positioned at institute's pressure transmission hole, tubing pressure sensor 13 is all connected with the input of processor 12 with casing pressure sensor 14, the output of processor 12 is connected with external equipment by communication module 11.
It should be noted that, described pulling assembly comprises fishing rod 1, pressure cap 2, fishing rod spring 3, bolt 4, the external cover 5 of pulling, axle 6 and cam 8, the middle part symmetry of the external cover 5 of pulling offers two grooves, cam 8 is between two grooves, and be fixed in the external cover 5 of pulling by axle 6 support, cam 8 is provided with the short sharp locking face and long sharp locking face that can rotate in groove, torsion spring 7 is provided with between the inwall of the outside of cam 8 and the external cover 5 of pulling, pressure cap 2 is connected with the upper end of the external cover 5 of pulling, the lower end of fishing rod 1 is inserted in the external cover 5 of pulling through pressure cap 2, bolt 4 is socketed on the side of fishing rod 1 lower end, the side of fishing rod 1 is connected with between pressure cap 2, the two ends of fishing rod spring 3 are connected with bolt 4 with pressure cap 2 respectively, the lower end of fishing rod 1 is connected on the short sharp locking face of cam 8, be threaded connection between the lower end of the external cover 5 of pulling and pressure gauge overcoat 9 upper end, on the lower end of pressure gauge overcoat 9 and constant current body overcoat 18 upper end between be threaded connection, be threaded connection between the lower end of pressure gauge overcoat 9 and the upper end of pressure tube 15, in constant current body on the upper end of overcoat 20 and lower end and constant current body under the lower end of overcoat 18 and constant current body overcoat 24 upper end between be all threaded connection, phase clamping between hollow spool 16 with overcoat 18 on constant current body, for playing axial limiting effect to hollow spool 16, pressure cap 2 is threaded connection with the upper end of the external cover 5 of pulling, the side of fishing rod 1 is provided with the annular protrusion for playing position-limiting action, and annular protrusion is positioned at the inner side of pressure cap 2, O-ring seal is provided with between pressure tube 15 and hollow spool 16, under constant current body, the side of overcoat 24 is provided with lower O RunddichtringO 25, on constant current body, the side of overcoat 18 is provided with O RunddichtringO 17, some water nozzle packing rings 23 are provided with between overcoat 20 in ceramic water nozzle 22 and constant current body.
When throwing in operation, the throw in catcher that steel wire carries is connected with pressure cap 2 by delivering head, delivers on head and has pore to aim at the pore on pressure cap 2, inserts finer wire mode and both is connected, under enter water injection string after, down to target operation cylinder bottom, then on carry top to this seating nipple, and then to transfer, the sharp locking face of the length of cam 8 is made to lock onto in the groove 27 in the inclined hole of seating nipple, carry throw in catcher again, cut off the steel wire delivered on head pore corresponding to pressure cap 2, delivery completes.When salvaging gas lift valve operation, by on throw in catcher arm by thread connection special drag for head drag for fishing rod 1 after on carry, the short sharp locking face of cam 8 loses stop, cam 8 drives length point locking face also to turn clockwise certain angle, thus make quantitative injection pressure measurement compound blanking plug of the present invention lose locking in the groove 27 in the inclined hole of seating nipple, and then taken quantitative injection pressure measurement compound blanking plug proposition of the present invention by throw in catcher.
The liquid injecting stratum enters from the water inlet of overcoat 24 lower end through constant current body, bottom, seating nipple inclined hole 26, upwards flow out by ceramic water nozzle 22, flow out through the annular gap between hollow spool 16 lower end and upper water nozzle 21 again, and then the sidewall weep hole of overcoat 18 flows out on constant current body, the weep hole 28 finally by the inclined hole of seating nipple enters into stratum.Because waterflood injection rate is relevant with pressure reduction before and after water nozzle and closure member, when the timing of seating nipple inclined hole 26 weep hole pressure one, when seating nipple internal water flooding pressure increases, the water injection rate injecting the annular gap of water from the bottom in the inclined hole of seating nipple 26 through hollow spool 16 bottom and upper water nozzle 21 will increase, but because seating nipple internal water flooding pressure also moves down after the upper side cinclides of overcoat 18 constant current body to act on the upper, annular face of hollow spool 16 and drives hollow spool 16 to compress to determine fluid spring 19 from top, seating nipple inclined hole 26, the annular gap of hollow spool 16 bottom and upper water nozzle 21 is reduced, and then reduce to former setting value by increasing rear water injection rate, the water yield is not changed with tubing pressure change, realize the function of quantitative injection.
Simultaneously, the weep hole of strata pressure overcoat 18 on constant current body is delivered to the circular hole on the sidewall of hollow spool 16 bottom, casing pressure sensor 14 is delivered to again through the endoporus of hollow spool 16, the inner via hole of pressure tube 15, in addition, tubing pressure is recorded by the sidewall pressure transmission hole of tubing pressure sensor 13 on pressure gauge overcoat 9, the pressure information that casing pressure sensor 14 collects is forwarded in processor 12, processor 12 draws pressure curve according to the pressure information received, and is forwarded on external equipment by described pressure curve by communication module 11.
Use quantitative injection pressure measurement compound blanking plug to carry out water filling and pressure measurement, main construction sequence is as follows: separate injection tubing string G.I.H, suppresses set packer, tests involution lattice; Connect on quantitative injection pressure measurement compound blanking plug top and deliver head, and be arranged on throw in catcher; Throw in catcher is adopted to drop in the inclined hole of injection well downhole flow regulator by quantitative injection pressure measurement compound blanking plug, normal water filling and pressure measurement; After water filling a period of time, pull quantitative injection pressure measurement compound blanking plug out with throw in catcher, carry out pressure data playback; According to pressure data, analytically layer status, instructs waterflooding extraction.
Claims (8)
1. a quantitative injection pressure measurement compound blanking plug, is characterized in that, comprises pulling assembly, pressure measurement assembly and quantitative injection assembly;
Described quantitative injection assembly comprises hollow spool (16), overcoat (18) on constant current body, determine fluid spring (19), overcoat (20) in constant current body, upper water nozzle (21), overcoat (24) under ceramic water nozzle (22) and constant current body, in constant current body the two ends of overcoat (20) to be socketed on constant current body in overcoat (18) lower end and under constant current body overcoat (24) upper end in, upper water nozzle (21) and ceramic water nozzle (22) to be set in turn in constant current body in overcoat (20) vertically, hollow spool (16) to be socketed on constant current body in overcoat (18), determine the side that fluid spring (19) is socketed on hollow spool (16) lower end, determine the upper end of fluid spring (19) and lower end to be connected with the inwall of overcoat (20) in the side of hollow spool (16) and constant current body respectively, annular gap is had between the inwall of upper water nozzle (21) upper end and the outer wall of hollow spool (16) lower end, on constant current body overcoat (18) sidewall on offer weep hole, under constant current body, the water inlet of overcoat (24) lower end is successively through ceramic water nozzle (22), upper water nozzle (21) and described annular gap are connected with weep hole,
Residing pressure measurement assembly comprises communication module (11), pressure gauge overcoat (9), tubing pressure sensor (13), casing pressure sensor (14), pressure tube (15), processor (12), and for providing the power supply of electric energy, on constant current body, the upper end of overcoat (18) is socketed on the lower end of pressure gauge overcoat (9), the upper end of pressure gauge overcoat (9) is socketed in the lower end of the external cover of pulling (5) in pulling assembly, pressure tube (15), casing pressure sensor (14), processor (12) and communication module (11) are all positioned at pressure gauge overcoat (9), the lower end of pressure tube (15) is connected with the movable upper end of hollow spool (16), casing pressure sensor (14) is positioned at the upper end of pressure tube (15), gap is there is between the upper end of hollow spool (16) and the lower end of pressure gauge overcoat (9), the side opening of pressure gauge overcoat (9) is provided with pressure transmission hole, tubing pressure sensor (13) is positioned at institute's pressure transmission hole, tubing pressure sensor (13) is all connected with the input of processor (12) with casing pressure sensor (14), the output of processor (12) is connected with external equipment by communication module (11).
2. quantitative injection pressure measurement compound blanking plug according to claim 1, it is characterized in that, described pulling assembly comprises fishing rod (1), pressure cap (2), fishing rod spring (3), bolt (4), the external cover of pulling (5), axle (6) and cam (8), the middle part symmetry of the external cover of pulling (5) offers two grooves, cam (8) is between two grooves, and be fixed in the external cover of pulling (5) by axle (6) support, cam (8) is provided with the short sharp locking face and long sharp locking face that can rotate in groove, torsion spring (7) is provided with between the outside of cam (8) and the inwall of the external cover of pulling (5), pressure cap (2) is connected with the upper end of the external cover of pulling (5), the lower end of fishing rod (1) is inserted in the external cover of pulling (5) through pressure cap (2), bolt (4) is socketed on the side of fishing rod (1) lower end, the side of fishing rod (1) is connected with between pressure cap (2), the two ends of fishing rod spring (3) are connected with bolt (4) with pressure cap (2) respectively, the lower end of fishing rod (1) is connected on the short sharp locking face of cam (8).
3. quantitative injection pressure measurement compound blanking plug according to claim 2, is characterized in that,
Be threaded connection between the lower end of the external cover of described pulling (5) and pressure gauge overcoat (9) upper end;
On the lower end of described pressure gauge overcoat (9) and constant current body overcoat (18) upper end between be threaded connection;
Be threaded connection between the lower end of described pressure gauge overcoat (9) and the upper end of pressure tube (15).
4. quantitative injection pressure measurement compound blanking plug according to claim 1, is characterized in that,
In described constant current body on the upper end of overcoat (20) and lower end and constant current body under the lower end of overcoat (18) and constant current body overcoat (24) upper end between be all threaded connection;
Described hollow spool (16) and phase clamping between overcoat (18) on constant current body, for playing axial limiting effect to hollow spool (16).
5. quantitative injection pressure measurement compound blanking plug according to claim 2, is characterized in that,
Described pressure cap (2) is threaded connection with the upper end of the external cover of pulling (5);
The side of described fishing rod (1) is provided with the annular protrusion for playing position-limiting action, and annular protrusion is positioned at the inner side of pressure cap (2).
6. quantitative injection pressure measurement compound blanking plug according to claim 1, is characterized in that,
O-ring seal is provided with between described pressure tube (15) and hollow spool (16).
7. quantitative injection pressure measurement compound blanking plug according to claim 1, is characterized in that,
Under described constant current body, the side of overcoat (24) is provided with lower O RunddichtringO (25);
On described constant current body, the side of overcoat (18) is provided with O RunddichtringO (17).
8. quantitative injection pressure measurement compound blanking plug according to claim 1, is characterized in that,
Some water nozzle packing rings (23) are provided with between overcoat (20) in described ceramic water nozzle (22) and constant current body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758166.XA CN104481447B (en) | 2014-12-10 | 2014-12-10 | A kind of quantitative injection pressure measurement is combined blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758166.XA CN104481447B (en) | 2014-12-10 | 2014-12-10 | A kind of quantitative injection pressure measurement is combined blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481447A true CN104481447A (en) | 2015-04-01 |
| CN104481447B CN104481447B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410758166.XA Active CN104481447B (en) | 2014-12-10 | 2014-12-10 | A kind of quantitative injection pressure measurement is combined blanking plug |
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| Country | Link |
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| CN (1) | CN104481447B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812519A (en) * | 2016-12-28 | 2017-06-09 | 中国石油天然气股份有限公司 | Testing device for downhole tool and testing system for downhole tool |
| CN111561302A (en) * | 2020-07-16 | 2020-08-21 | 西安洛科电子科技股份有限公司 | Intelligent water distribution device that can cast wave code communication |
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| US4239082A (en) * | 1979-03-23 | 1980-12-16 | Camco, Incorporated | Multiple flow valves and sidepocket mandrel |
| US5042584A (en) * | 1990-12-05 | 1991-08-27 | Mcmurray Oil Tools, Inc. | Stacked water regulator and method of use |
| CN1648407A (en) * | 2005-02-04 | 2005-08-03 | 赵学增 | Zonal water injection contanst flow packer |
| CN201730580U (en) * | 2010-07-12 | 2011-02-02 | 毛元红 | Flow-stabilizing adjustable and multifunctional blocking device |
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| CN202417405U (en) * | 2012-01-13 | 2012-09-05 | 天津哈德韦尔自控技术有限公司 | Underground digital type intelligent water plugging system for water injection well |
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| CN203374276U (en) * | 2013-08-11 | 2014-01-01 | 方永和 | Eccentric integrated dedicated well-testing instrument |
| CN204283306U (en) * | 2014-12-10 | 2015-04-22 | 陕西创源石油科技有限公司 | A kind of quantitative injection pressure measurement compound blanking plug |
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| US4239082A (en) * | 1979-03-23 | 1980-12-16 | Camco, Incorporated | Multiple flow valves and sidepocket mandrel |
| US5042584A (en) * | 1990-12-05 | 1991-08-27 | Mcmurray Oil Tools, Inc. | Stacked water regulator and method of use |
| CN1648407A (en) * | 2005-02-04 | 2005-08-03 | 赵学增 | Zonal water injection contanst flow packer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106812519A (en) * | 2016-12-28 | 2017-06-09 | 中国石油天然气股份有限公司 | Testing device for downhole tool and testing system for downhole tool |
| CN106812519B (en) * | 2016-12-28 | 2020-01-07 | 中国石油天然气股份有限公司 | Testing device for downhole tool and testing system for downhole tool |
| CN111561302A (en) * | 2020-07-16 | 2020-08-21 | 西安洛科电子科技股份有限公司 | Intelligent water distribution device that can cast wave code communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104481447B (en) | 2017-01-04 |
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