CN115538959A - Shaft liquid level balance control method based on liquid level monitoring - Google Patents
Shaft liquid level balance control method based on liquid level monitoring Download PDFInfo
- Publication number
- CN115538959A CN115538959A CN202211525699.4A CN202211525699A CN115538959A CN 115538959 A CN115538959 A CN 115538959A CN 202211525699 A CN202211525699 A CN 202211525699A CN 115538959 A CN115538959 A CN 115538959A
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- liquid level
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- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 131
- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 44
- 239000012530 fluid Substances 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
Abstract
The invention discloses a shaft liquid level balance control method based on liquid level monitoring, which comprises the following steps: 1. a sound wave type liquid level monitor and a liquid filling pipe are arranged on the shaft branch pipe; 2. installing a hoop type wellhead plugging seat at the top of the shaft; 3. make staple bolt formula well head shutoff seat embrace oil pipe, rubber seal ring and oil pipe laminating start the sound wave formula liquid level monitor afterwards, at the present pit shaft liquid level degree of depth of continuous monitoring of oil pipe's play tubular column in-process to confirm the liquid filling volume to in the pit shaft according to current pit shaft liquid level degree of depth. The invention utilizes the sound wave type liquid level monitor and combines the hoop type well mouth plugging seat to realize the real-time and direct monitoring of the liquid level of the shaft in the process of tripping the oil pipe, and then controls the liquid filling amount into the shaft according to the liquid level monitoring result, so as to keep the liquid level depth of the shaft within the safety limit range, avoid the occurrence of well leakage, well kick or blowout in the process of tripping the workover and improve the safety of production maintenance operation.
Description
Technical Field
The invention belongs to the technical field of shaft liquid level balance control, and particularly relates to a shaft liquid level balance control method based on liquid level monitoring.
Background
In the well repairing operation process, the tubing string is pulled down, the liquid level can be changed in the pulling down operation process, so that many unexpected emergencies are likely to occur, and if the liquid level is higher, the bottom pressure is higher than the formation pressure, and the well leakage is likely to occur; if the liquid level is low and the bottom hole pressure is lower than the formation pressure, well kick and even blowout can be generated, and serious accidents can happen. Therefore, effective measures are taken to control the liquid level depth of the shaft, and the guarantee of the balance of the liquid level of the shaft is an extremely important link for the safety of workover treatment.
The mature liquid level detection device mostly adopts the echo method to detect, but because oil pipe need lift and transfer during workover, consequently the preventer need be opened, and the pit shaft top is not sealed, leads to the unable direct use of current device that adopts the echo method to detect, can not guarantee the continuous monitoring of workover in-process liquid level, also can not guarantee the security of workover in-process, takes place serious accidents such as lost circulation, kick, blowout easily. Therefore, how to guarantee to continuously monitor the liquid level in the well repairing process is a problem to be solved at present, so that the liquid filling amount is determined according to the liquid level of the shaft, and the balance of the liquid level of the shaft is guaranteed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a shaft liquid level balance control method based on liquid level monitoring, which aims at overcoming the defects in the prior art, and utilizes a sound wave type liquid level monitor and a hoop type wellhead plugging seat to realize real-time and direct monitoring of the shaft liquid level in the process of tripping a tubing string, and then controls the liquid filling amount into the shaft according to the liquid level monitoring result, so that the shaft liquid level depth is kept within a safety limit range, the occurrence of well leakage, well kick or blowout in the process of workover tripping is avoided, and the production and maintenance operation safety is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a shaft liquid level balance control method based on liquid level monitoring is characterized by comprising the following steps:
step one, mounting an acoustic wave type liquid level monitor and a liquid filling pipe on a branch pipe of a shaft;
step two, installing a hoop type wellhead plugging seat on the top of the shaft, wherein a rubber sealing ring attached to the outer wall of the oil pipe is arranged on the hoop type wellhead plugging seat and is in sliding fit with the oil pipe;
and step three, enabling the hoop type wellhead plugging seat to embrace the oil pipe, enabling the rubber sealing ring to be attached to the oil pipe, sealing the top of the shaft, then starting the acoustic wave type liquid level monitor, continuously monitoring the current shaft liquid level depth in the lifting and lowering process of the oil pipe, determining the liquid filling amount into the shaft according to the current shaft liquid level depth, and keeping the shaft liquid level depth within a safety limit range.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: the top of the shaft is sequentially provided with a shaft branch pipe, a blowout preventer stack and a well head plugging seat from bottom to top, the shaft branch pipe is a four-way pipe, a bottom passage of the four-way pipe is connected with the top of the shaft, a top passage of the four-way pipe is connected with the bottom of the blowout preventer stack, and two side passages of the four-way pipe are respectively connected with an acoustic wave type liquid level monitor and a liquid filling pipe.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: a first valve is arranged between the sound wave type liquid level monitor and the shaft branch pipe, a second valve and a diaphragm pump are arranged on the liquid filling pipe, and one end, far away from the shaft branch pipe, of the liquid filling pipe is connected with a liquid filling pool.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: well head shutoff seat include with blowout preventer group top be connected double slide rail and with double slide rail sliding fit's oil pipe cohesion mechanism, oil pipe cohesion mechanism includes two half cohesion units, half cohesion unit includes along the gliding slide of double slide rail, set up half staple bolt on the slide and control the gliding telescopic cylinder of slide, rubber seal ring includes two half sealing rings, and half sealing ring is installed at half staple bolt inboardly, and the top laminating of slide lower surface and blowout preventer group.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: the internal diameter of half sealing ring is less than oil pipe diameter, the difference of oil pipe diameter and the internal diameter of half sealing ring is not more than 10mm.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: the thickness from the outer circumferential side surface to the inner circumferential side surface of the half seal ring is gradually reduced.
The shaft liquid level balance control method based on liquid level monitoring is characterized in that: and two ends of one half sealing ring are provided with limiting lugs, and two ends of the other half sealing ring are provided with limiting grooves for the limiting lugs to be inserted into.
Compared with the prior art, the invention has the advantages that: the invention utilizes the sound wave type liquid level monitor and combines the hoop type well mouth plugging seat to realize the real-time and direct monitoring of the liquid level of the shaft in the process of tripping the oil pipe, then controls the liquid filling amount into the shaft according to the liquid level monitoring result, keeps the liquid level depth of the shaft in a safety limit range, avoids the occurrence of well leakage, well kick or blowout in the process of tripping the workover, and improves the safety of the workover process.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a state diagram of the present invention in use.
Fig. 2 is a schematic structural diagram of a wellhead plugging seat adopted by the invention.
Fig. 3 is a schematic view of the installation position of the telescopic cylinder in the wellhead plugging seat adopted by the invention.
Fig. 4 is a schematic structural diagram of a half sealing ring and a half hoop in a wellhead plugging seat adopted by the invention.
Description of reference numerals:
1-a wellbore lateral; 2-acoustic wave type liquid level monitor; 3-liquid filling pipe;
4-a wellbore; 5-anchor ear type wellhead plugging seat; 6-oil pipe;
7-blowout preventer stack; 8-a first valve; 9-a second valve;
10-a diaphragm pump; 11-a liquid filling pool; 12-a monitoring host;
13-double rows of slide rails; 14-a slide; 15-half hoop;
16-a telescopic cylinder; 17-half seal ring; 18-a tri-color indicator light;
19-a limit bump; 20-a limiting groove; 21-a transverse link;
22-long strip through hole.
Detailed Description
As shown in fig. 1 to 4, the method for controlling the liquid level balance of the shaft based on liquid level monitoring of the present invention comprises the following steps:
step one, installing an acoustic wave type liquid level monitor 2 and a liquid filling pipe 3 on a shaft branch pipe 1;
secondly, installing an anchor ear type wellhead plugging seat 5 at the top of the shaft 4, wherein a rubber sealing ring attached to the outer wall of the oil pipe 6 is arranged on the anchor ear type wellhead plugging seat 5 and is in sliding fit with the oil pipe 6;
and step three, enabling the hoop type wellhead plugging seat 5 to embrace the oil pipe 6, enabling the rubber sealing ring to be attached to the oil pipe 6, sealing the top of the shaft 4, then starting the acoustic wave type liquid level monitor 2, continuously monitoring the current shaft liquid level depth in the lifting and lowering processes of the oil pipe 6, determining the liquid filling amount in the shaft 4 according to the current shaft liquid level depth, and keeping the shaft liquid level depth within a safety limit range.
It should be noted that by using the acoustic wave type liquid level monitor 2 and combining the hoop type wellhead plugging seat 5, the real-time and direct monitoring of the liquid level of the shaft in the tripping process of the oil pipe 6 is realized, the liquid filling amount into the shaft 4 is controlled according to the liquid level monitoring result, the liquid level depth of the shaft is kept within the safety limit range, the occurrence of well leakage, well kick or blowout in the tripping process of well repair is avoided, and the production and maintenance operation safety is improved.
In this embodiment, the upper limit value and the lower limit value of the liquid level depth are set in the monitoring host 12 to control the liquid level depth. When the device is used specifically, after the top of the shaft 4 is sealed by the hoop type wellhead plugging seat 5, the sound wave type liquid level monitor 2 is started to continuously monitor the liquid level depth, when the detected actual liquid level depth is smaller than the lower limit value of the liquid level depth, the monitoring host 12 controls the diaphragm pump 10 to be started, liquid is filled into the shaft 4 through the four-way pipe, when the actual liquid level depth detected by the sound wave type liquid level monitor 2 is larger than the upper limit value of the liquid level depth, the liquid filling is stopped, the lowering of the oil pipe 6 is suspended or slowed down, meanwhile, the blowout preventer unit 7 works, the hoop type wellhead plugging seat 5 keeps in cohesion, the three-color indicator lamp 18 connected with the monitoring host 12 is used for alarming, and the leakage or overflow danger is prompted.
In this embodiment, 4 tops of pit shaft have set gradually pit shaft branch pipe 1, blowout preventer stack 7 and well head shutoff seat 5 from lower to upper, pit shaft branch pipe 1 is the four-way pipe, the bottom route of four-way pipe is connected with 4 tops of pit shaft, the top route of four-way pipe is connected with blowout preventer stack 7's bottom, the both sides route of four-way pipe is connected with acoustic wave formula liquid level monitor 2 and liquid filling pipe 3 respectively.
It should be noted that, because when blowout preventer stack 7 seals the well head, oil pipe can't reciprocate, consequently can't directly use blowout preventer stack 7 as the well head plugging device of workover tripping, need additionally carry out the shutoff structural design, well head shutoff seat 5 both can guarantee not influence the up-and-down action of oil pipe 6 when sealing the well head to adopt acoustic wave formula liquid level monitor to carry out the real-time detection of liquid level when realizing the workover.
In this embodiment, be provided with first valve 8 between sound wave formula liquid level monitor 2 and the pit shaft branch pipe 1, be provided with second valve 9 and diaphragm pump 10 on the liquid filling pipe 3, the one end that the pit shaft branch pipe 1 was kept away from to liquid filling pipe 3 is connected with liquid filling pool 11.
In this embodiment, the fluid filling tank 11 stores workover fluid.
In this embodiment, the acoustic wave type liquid level monitor 2 adopts the utility model patent 201720395204.9 integrated oil well dynamic liquid level measuring device, the acoustic wave type liquid level monitor 2 communicates with the monitoring host 12, and the monitoring host 12 controls the start and stop of the diaphragm pump 10 according to the monitoring result of the acoustic wave type liquid level monitor 2.
It should be noted that the sound wave type liquid level monitor 2 can work by using a vehicle-mounted power supply and vehicle-mounted compressed gas on a workover rig, the sound wave type liquid level monitor 2 utilizes the vehicle-mounted compressed gas to generate infrasonic waves with specific frequency by instantaneous sound explosion, the sound waves propagate along the annulus of the shaft 4 and generate reflection echo waves through the liquid level of the shaft, the sound wave type liquid level monitor 2 processes echo signals into electric signals, the signals are transmitted to the monitoring host 12 through the wired RS485, the monitoring host 12 transmits data to the tablet personal computer in a WIFI wireless mode, and the depth of the liquid level of the shaft is displayed and controlled.
In the embodiment, the liquid filling can be automatically controlled according to the detected liquid level depth of the shaft, and the liquid filling can be manually or regularly controlled according to actual needs, so that the operability is improved.
In this embodiment, in step three, after the top of the shaft 4 is closed, the first valve 8 and the second valve 9 need to be opened.
In this embodiment, well head shutoff seat 5 includes the double slide rail 13 of being connected with blowout preventer stack 7 top and with double slide rail 13 sliding fit's oil pipe cohesion mechanism, oil pipe cohesion mechanism includes two half cohesion units, half cohesion unit includes along double slide rail 13 gliding slide 14, set up half staple bolt 15 on slide 14 and the gliding telescopic cylinder 16 of control slide 14, the rubber seal ring includes two half sealing rings 17, and half sealing ring 17 is installed at half staple bolt 15 inboardly, and slide 14 lower surface is laminated with blowout preventer stack 7's top.
In this embodiment, the double-row sliding rails 13 are two i-steel sliding rails, and the sliding base 14 is in sliding fit with the inner side sliding rails of the i-steel sliding rails.
In this embodiment, the number of the telescopic cylinders 16 is four, one sliding seat 14 is controlled by two telescopic cylinders 16, the stability is better, the two telescopic cylinders 16 are respectively installed on two outer side slideways of the i-steel sliding rail, the telescopic ends of the telescopic cylinders 16 are connected with the sliding seat 14 through the transverse connecting rod 21, and the web plate of the i-steel sliding rail is provided with a long-strip through hole 22 for the transverse connecting rod 21 to slide.
It should be noted that, after the rubber sealing ring is clasped on the oil pipe 6, the two sliding seats 14, the half hoop 15 and the half sealing ring 17 seal the top of the shaft 4, so that the acoustic wave type liquid level monitor 2 can work normally.
In this embodiment, the inner diameter of the half sealing ring 17 is smaller than the pipe diameter of the oil pipe 6, and the difference between the pipe diameter of the oil pipe 6 and the inner diameter of the half sealing ring 17 is not greater than 10mm.
It should be noted that, when the two half hoops 15 are clasped, the two half sealing rings 17 extrude the side wall of the oil pipe 6 to ensure the sealing effect, but the extrusion pressure of the rubber sealing rings on the oil pipe 6 is controlled by limiting the difference between the inner diameter of the rubber sealing rings and the pipe diameter of the oil pipe 6, so that the oil pipe 6 can freely move up and down while the sealing effect is achieved, and the normal operation of the workover operation is ensured.
In the present embodiment, the thickness from the outer circumferential side surface to the inner circumferential side surface of the half seal ring 17 is gradually reduced.
It should be noted that the thickness of the inner side of the half sealing ring 17 is smaller, so that the half sealing ring has relatively larger elasticity, the thickness of the outer side of the half sealing ring 17 is larger, the elasticity is relatively smaller, the supporting force is better, and the structure can better ensure the cohesive sealing effect on the oil pipe 6.
In this embodiment, two ends of one of the half sealing rings 17 are both provided with a limiting protrusion 19, and two ends of the other half sealing ring 17 are both provided with a limiting groove 20 into which the limiting protrusion 19 is inserted.
It should be noted that, when the oil pipe 6 is lifted up and down, the oil pipe may shake left and right more or less, the two half sealing rings 17 are clamped with the limiting groove 20 through the limiting protrusion 19, and the two half sealing rings 17 are prevented from being dislocated due to the movement interference of the oil pipe 6 by combining the pushing action of the telescopic cylinder 16, so that the sealing performance of the top of the shaft 4 is ensured constantly.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. A shaft liquid level balance control method based on liquid level monitoring is characterized by comprising the following steps:
step one, installing an acoustic wave type liquid level monitor (2) and a liquid filling pipe (3) on a shaft branch pipe (1);
secondly, installing an anchor ear type wellhead plugging seat (5) at the top of the shaft (4), wherein a rubber sealing ring attached to the outer wall of the oil pipe (6) is arranged on the anchor ear type wellhead plugging seat (5), and the rubber sealing ring is in sliding fit with the oil pipe (6);
and step three, enabling the hoop type wellhead plugging seat (5) to embrace the oil pipe (6), enabling the rubber sealing ring to be attached to the oil pipe (6), sealing the top of the shaft (4), then starting the sound wave type liquid level monitor (2), continuously monitoring the current shaft liquid level depth in the lifting and lowering process of the oil pipe (6), determining the liquid filling amount in the shaft (4) according to the current shaft liquid level depth, and keeping the shaft liquid level depth within a safety limit range.
2. The wellbore fluid level balance control method based on fluid level monitoring according to claim 1, wherein: shaft (4) top is by supreme shaft branch pipe (1), blowout preventer stack (7) and well head shutoff seat (5) of having set gradually down, shaft branch pipe (1) is the four-way pipe, the bottom route and the shaft (4) top of four-way pipe are connected, the top route and the bottom of blowout preventer stack (7) of four-way pipe are connected, the both sides route of four-way pipe is connected with sound wave formula liquid level monitor (2) and liquid filling pipe (3) respectively.
3. The wellbore fluid level balance control method based on fluid level monitoring according to claim 2, wherein: be provided with first valve (8) between sound wave formula liquid level monitor (2) and pit shaft branch pipe (1), be provided with second valve (9) and diaphragm pump (10) on liquid-filling pipe (3), the one end that pit shaft branch pipe (1) was kept away from in liquid-filling pipe (3) is connected with liquid-filling pool (11).
4. The wellbore fluid level balance control method based on fluid level monitoring according to claim 2, wherein: well head shutoff seat (5) include with blowout preventer group (7) top connection double slide rail (13) and with double slide rail (13) sliding fit's oil pipe cohesion mechanism, oil pipe cohesion mechanism includes two half cohesion units, half cohesion unit includes along double slide rail (13) gliding slide (14), sets up half staple bolt (15) on slide (14) and control slide (14) gliding telescopic cylinder (16), the rubber seal ring includes two half sealing rings (17), and half sealing ring (17) are installed at half staple bolt (15) inboardly, and slide (14) lower surface is laminated with the top of blowout preventer group (7).
5. The wellbore fluid level balance control method based on fluid level monitoring according to claim 4, wherein: the inner diameter of the half sealing ring (17) is smaller than the pipe diameter of the oil pipe (6), and the difference value between the pipe diameter of the oil pipe (6) and the inner diameter of the half sealing ring (17) is not larger than 10mm.
6. The wellbore fluid level balance control method based on fluid level monitoring according to claim 4, wherein: the thickness of the half seal ring (17) from the outer circumferential side to the inner circumferential side is gradually reduced.
7. The wellbore fluid level balance control method based on fluid level monitoring according to claim 4, wherein: the two ends of one half sealing ring (17) are provided with limiting lugs (19), and the two ends of the other half sealing ring (17) are provided with limiting grooves (20) for the limiting lugs (19) to be inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525699.4A CN115538959A (en) | 2022-12-01 | 2022-12-01 | Shaft liquid level balance control method based on liquid level monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525699.4A CN115538959A (en) | 2022-12-01 | 2022-12-01 | Shaft liquid level balance control method based on liquid level monitoring |
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| CN115538959A true CN115538959A (en) | 2022-12-30 |
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| CN202211525699.4A Pending CN115538959A (en) | 2022-12-01 | 2022-12-01 | Shaft liquid level balance control method based on liquid level monitoring |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5117399A (en) * | 1990-07-16 | 1992-05-26 | James N. McCoy | Data processing and display for echo sounding data |
| CN1908369A (en) * | 2006-08-18 | 2007-02-07 | 北京石大德美科技有限责任公司 | Underground liquid level monitoring system and its method |
| CN202325484U (en) * | 2011-11-17 | 2012-07-11 | 北京格瑞迪斯石油技术有限公司 | Long-distance well-drilling liquid level monitoring system |
| CN202325354U (en) * | 2011-11-17 | 2012-07-11 | 北京格瑞迪斯石油技术有限公司 | Annulus stopper for liquid level monitoring |
| US20160312601A1 (en) * | 2013-03-15 | 2016-10-27 | Reservoir Management Services, Llc | Fluid Level Determination Apparatus and Method of Determining a Fluid Level in a Hydrocarbon Well |
| CN206693980U (en) * | 2017-02-14 | 2017-12-01 | 中国石油天然气股份有限公司 | The antifouling flow-controlled device of oil pipe |
| CN206801556U (en) * | 2017-05-31 | 2017-12-26 | 中国石油化工股份有限公司 | Well workover liquid level monitors and automatic liquid filling system |
| CN109736738A (en) * | 2019-01-07 | 2019-05-10 | 青岛理工大学 | The anti-well kick device of thick oil thermal extraction hydraulic-driven single control |
| CN210134848U (en) * | 2019-05-31 | 2020-03-10 | 中国石油集团川庆钻探工程有限公司 | Wellhead resetting device suitable for flange with bottom |
-
2022
- 2022-12-01 CN CN202211525699.4A patent/CN115538959A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5117399A (en) * | 1990-07-16 | 1992-05-26 | James N. McCoy | Data processing and display for echo sounding data |
| CN1908369A (en) * | 2006-08-18 | 2007-02-07 | 北京石大德美科技有限责任公司 | Underground liquid level monitoring system and its method |
| CN202325484U (en) * | 2011-11-17 | 2012-07-11 | 北京格瑞迪斯石油技术有限公司 | Long-distance well-drilling liquid level monitoring system |
| CN202325354U (en) * | 2011-11-17 | 2012-07-11 | 北京格瑞迪斯石油技术有限公司 | Annulus stopper for liquid level monitoring |
| US20160312601A1 (en) * | 2013-03-15 | 2016-10-27 | Reservoir Management Services, Llc | Fluid Level Determination Apparatus and Method of Determining a Fluid Level in a Hydrocarbon Well |
| CN206693980U (en) * | 2017-02-14 | 2017-12-01 | 中国石油天然气股份有限公司 | The antifouling flow-controlled device of oil pipe |
| CN206801556U (en) * | 2017-05-31 | 2017-12-26 | 中国石油化工股份有限公司 | Well workover liquid level monitors and automatic liquid filling system |
| CN109736738A (en) * | 2019-01-07 | 2019-05-10 | 青岛理工大学 | The anti-well kick device of thick oil thermal extraction hydraulic-driven single control |
| CN210134848U (en) * | 2019-05-31 | 2020-03-10 | 中国石油集团川庆钻探工程有限公司 | Wellhead resetting device suitable for flange with bottom |
Non-Patent Citations (1)
| Title |
|---|
| 巩娟娟等: "井下液面监测及自动灌浆系统设计", 《中国石油和化工标准与质量》 * |
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Application publication date: 20221230 |