CN114458245A - Offshore oil gas well solid medicament adds device is prevented blockking up in adaptation - Google Patents
Offshore oil gas well solid medicament adds device is prevented blockking up in adaptation Download PDFInfo
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- CN114458245A CN114458245A CN202111584681.7A CN202111584681A CN114458245A CN 114458245 A CN114458245 A CN 114458245A CN 202111584681 A CN202111584681 A CN 202111584681A CN 114458245 A CN114458245 A CN 114458245A
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- 239000003814 drug Substances 0.000 title claims abstract description 306
- 239000007787 solid Substances 0.000 title claims abstract description 39
- 230000006978 adaptation Effects 0.000 title claims description 4
- 238000007599 discharging Methods 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000003044 adaptive effect Effects 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 103
- 239000000203 mixture Substances 0.000 claims description 45
- 235000019198 oils Nutrition 0.000 claims description 26
- 229940079593 drug Drugs 0.000 claims description 17
- 239000006247 magnetic powder Substances 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 235000019476 oil-water mixture Nutrition 0.000 claims description 6
- 239000013535 sea water Substances 0.000 claims description 6
- 229940126589 solid medicine Drugs 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000008177 pharmaceutical agent Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000004519 manufacturing process 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
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention provides an adaptive anti-blocking offshore oil and gas well solid medicament adding device, wherein a medicament discharging device is arranged on a rack, a medicament mixing device is arranged below the medicament discharging device, an outlet of the medicament discharging device is communicated with an inlet of the medicament mixing device, one end of a hose mechanism extends into the medicament mixing device, the other end of the hose mechanism extends into an annular space of an annular well, an electric control system is connected with a monitoring system, various parameter values in the medicament discharging process are fed back to the monitoring system through the electric control system, and the medicament discharging device works. The mechanical part is matched with the electric control system, so that the automatic control of the whole medicament adding process is realized, the blank of adding solid medicaments is made up, the mixing efficiency is improved, the mixing nonuniformity and the blocking condition are reduced, and the mechanization degree of corrosion treatment of the oil-gas well is improved.
Description
Technical Field
The invention relates to the technical field of oil well oil production, in particular to a solid medicament adding device adaptive to an anti-blocking offshore oil and gas well.
Background
The oil gas well casing is in the non-protection state for a long time, easily appears corroding to warp, corrode damaged scheduling problem, and has the maintenance degree of difficulty after the casing corrodes big, maintenance cost scheduling problem, still can cause the oil gas well to scrap when serious, consequently to the casing corrosion protection of oil gas well administer, is the key and difficult point in the oil gas well corrosion control.
At present, a part of solid corrosion inhibitors are applied as main corrosion inhibitors, but a plurality of problems exist in the process of putting the solid corrosion inhibitors into the annular space, firstly, a putting channel only has a way that a pipe valve is added into the annular space through a sleeve four-way joint, and at present, no solid agent adding device for the annular space is available on the sea; in addition, the inner diameter of the sleeve four-way is only 2 '-2-1/16', and the stability of the adding and replenishing amount of the medicament is poor, so that an adding channel is easy to block when solid medicament is added; finally, solid agents entering the annulus from the dosing device are difficult to fall evenly into the annulus and often accumulate at a certain point. Therefore, a device adaptive to the solid medicament adding of the anti-blocking offshore oil and gas well needs to be developed, so that the traditional process mode of pouring the preservative solution is changed, and a new process method is provided for the protection and treatment of the corrosion of the casing.
Disclosure of Invention
The invention overcomes the defects in the prior art, has a single feeding channel, does not have a solid medicament adding device for annular space at sea at present, has small inner diameter of a sleeve four-way joint and poor medicament adding and supplying stability, and the solid medicament entering the annular space is difficult to uniformly fall into the annular space.
The purpose of the invention is realized by the following technical scheme.
The device comprises a rack, a medicine discharging device, a medicine mixing device, a hose mechanism and an electric control system, wherein the medicine discharging device is installed on the rack, the medicine mixing device is arranged below the medicine discharging device, an outlet of the medicine discharging device is communicated with an inlet of the medicine mixing device, one end of the hose mechanism extends into the medicine mixing device, the other end of the hose mechanism extends into an annular space of an annular well, the electric control system is connected with a monitoring system, various parameter values in the medicine discharging process are fed back to the monitoring system through the electric control system, and the medicine discharging device works;
the medicine discharging device comprises a medicine box, a medicine discharging device shell, a medicine conveying assembly and a driving assembly, wherein the outlet end of the medicine box is connected with the inlet end of the medicine discharging device shell, the medicine box and the medicine discharging device shell are both arranged on the rack, the outlet end of the medicine discharging device shell is communicated with the inlet of the medicine mixing device, the medicine conveying assembly is arranged in the medicine discharging device shell, the driving assembly is connected with the medicine conveying assembly, and the driving assembly is used for driving the medicine conveying assembly to slowly and uniformly convey solid medicines in the medicine box into the medicine discharging device shell;
mix the medicine device including going into the medicine funnel, going into the medicine flange, mixing pencil and laminar flow water pipe, the entry end of going into the medicine funnel with the exit end of arranging the medicine ware shell is linked together, the exit end of going into the medicine funnel passes through go into the medicine flange with mix the income medicine mouth of seting up on the pencil and be linked together, with the relative one side of income medicine mouth oil stain mouth and hose entry have been seted up on the lateral wall of mixing the pencil respectively, mix the head end of pencil and install and mix medicine pipeline flange, mix the tail end of pencil with laminar flow water pipe's delivery port is linked together, laminar flow water pipe's water inlet links to each other with laminar flow pump's delivery port, hose mechanism certainly mix medicine pipeline flange department and stretch into mix in the pencil, at last by the hose entrance stretches into in the annular space of annular space well behind the suction pump.
The medicine feeding assembly comprises an ABS medicine feeding wheel, a rigid connector and a medicine discharging wheel shaft, the ABS medicine feeding wheel is fixed on the medicine discharging wheel shaft through the rigid connector, and the ABS medicine feeding wheel is arranged according to an Archimedes spiral line.
The drive assembly comprises a torque sensor, a magnetic powder brake, a speed sensor, a medicine discharger drive motor, a coupler and a bearing seat, one end of a medicine discharger wheel shaft penetrates through the side wall of a medicine discharger shell, the bearing seat is connected with the torque sensor, the torque sensor sequentially passes through the coupler, the magnetic powder brake and the speed sensor, the output shaft of the medicine discharger drive motor is connected with the speed sensor, the speed sensor is used for determining the rotation speed of the medicine discharger wheel shaft and transmitting a speed signal to the controller, and the controller determines the required water discharge of the laminar flow pump through function operation and performs water discharge work.
And the side wall of the medicine box is provided with an inspection window for observing the amount of the solid medicines in the medicine box so as to prevent the medicine feeding assembly from being blocked.
Mix the inner wall of pencil and be close to ultrasonic wave density sensor is installed to one side of greasy dirt mouth, and ultrasonic wave density sensor is used for detecting the mixed degree of mixing the intraductal mixture density condition of medicine in order to judge the mixture to with mixing degree signal transmission to controller, when the mixed degree of mixture is relatively poor, subside many, local density difference is big, the inhomogeneity is high, the controller will descend the feedwater flow of laminar flow pump, with the mixture degree of consistency that improves the mixture, reduce and subside and the concentration point mix medicine pipeline flange department and install contact potential sensor, mix the contact potential of medicine pipeline flange department because the rising of water level when taking place resistance value change, the controller receives above-mentioned change signal, presents on the electronic screen in real time, makes things convenient for the extraction that the staff switched rivers.
And the water inlet of the laminar flow pump is connected with a water supply system, and the flow rate of the laminar flow pump is determined by a speed sensor and an ultrasonic density sensor in the electric control device.
The electric control device comprises a speed sensor, a contact potential sensor, a torque sensor, an ultrasonic density sensor, a controller, a magnetic powder brake and a laminar flow pump.
The speed sensor determines the initial water flow rate of the laminar flow pump through the rotation speed of the ejector driving motor.
The torque sensor is used for monitoring the torque change of the drug discharging wheel shaft, when the torque signal of the drug discharging wheel shaft exceeds a threshold value, the controller gives an alarm to remind an operator of abnormal drug discharging, the magnetic powder brake receives the signal and then carries out a braking instruction, and power between the drug discharging device driving motor and the drug discharging wheel shaft is cut off to prevent damage.
The hose mechanism adopts 3/8 "hose, 3/8" hose certainly in the hose entrance stretches into the annular space of annular well behind the suction pump, the depth of going into of 3/8 "hose depends on the resistance of annular greasy dirt and sea water, the maximum value of 3/8" hose depth of going into is 50m, adds the medicine in-process, will 3/8 "hose is lifted to apart from the fixed height department of the horizontal axis of mixing the pencil, 3/8" hose is lifted highly, depends on the suction stroke of suction pump, the suction stroke of suction pump is 7 m.
In the installation, through pulling down the manometer on the sleeve pipe cross flange, mix the pencil flange and meet through bolt and sleeve pipe cross flange, and then realize sleeve pipe cross and mix pencil flange joint's purpose, carry the medicament to the annular space of annular well in the purpose through mixing pencil and sleeve pipe cross, and then realize anticorrosive irritate the medicine operation at any time.
If the sleeve four-way flange can not be opened, the ball valve part on the sleeve four-way is directly disassembled, and the medicine mixing pipe flange is connected with the flange at the annular interface of the sleeve four-way, so that the annular of the annular well is directly communicated.
A use method of an adaptive anti-blocking offshore oil and gas well solid medicament adding device is carried out according to the following steps:
step 1: the method comprises the following steps of mounting a solid medicament adding device on a pipeline four-way flange through a medicament mixing pipeline flange to form a medicament adding system, adding the solid medicament into a medicament box, checking the system condition and the abrasion condition of each part, checking the integrity of an electric control device, and preparing for working;
lifting the 3/8 'hose to a fixed height from the horizontal axis of the medicine mixing pipe, lifting the 3/8' hose to a height which depends on the suction distance of a water pump, wherein the suction distance of the water pump commonly used on site is about 7m, keeping the 3/8 'hose inside the inlet of the hose all the time, connecting the 3/8' hose with a laminar flow pump, pumping clean water until water in 7m is pumped out, and closing the suction laminar flow pump;
opening a medicine mixing pipe, connecting a laminar flow water pipe and a laminar flow pump with a water supply system, starting medicine adding operation, determining the rotation speed of a medicine discharging wheel shaft by a speed sensor, transmitting a rotation signal to a controller, determining the water discharge required by the laminar flow pump by the controller through function operation, performing water discharging operation, monitoring the torque of the medicine discharging wheel shaft by a torque sensor, transmitting a real-time torque signal to the controller, comparing the signal value with a threshold value by the controller, generating alarm if the signal value exceeds the threshold value, generating braking action by a magnetic powder brake at the moment, cutting off power, moving the mixture to one end of the medicine mixing pipe by an ultrasonic density sensor, judging the mixing degree of the mixture by detecting the density condition of the mixture by the ultrasonic density sensor, transmitting the mixed signal to the controller, and when the mixing degree is poor, the sedimentation is large, and the local density difference is large, when the nonuniformity is high, the controller regulates the water supply flow of the laminar flow pump downwards, the mixing uniformity is improved, the settlement and concentration points are reduced, a contact potential sensor is arranged at a flange of a medicine mixing pipeline, when the contact potential changes in resistance value due to rising of the water level, the controller receives a change signal and displays the change signal on an electronic screen in real time, the extraction of water flow is convenient for workers to switch, and the like, when the liquid level reaches a medicine mixing pipe, a water supply system is closed, the water outlet of the laminar flow pump is connected with the medicine mixing pipe through a laminar flow water pipe, the water inlet of the laminar flow pump is connected with the water supply system, the flow speed is determined through a speed sensor and an ultrasonic density sensor of a control system, a water suction pump is opened, liquid in the annular space of the annular empty well is sucked through an 3/8' hose to be sucked dry in 7m, and the steps are repeated until all the medicines are added;
and step 3: close the medicament and add the system, the clearance machines to close the back with medicament addition system's ball valve, dismantle and mix medicine flange, carry out the inside washing of solid medicament interpolation device, guarantee that solid medicament interpolation device's inside does not have the residual medicament.
The invention has the beneficial effects that: the mechanical part is matched with the electric control system for use, so that the automatic control of the whole medicament adding process is realized, the blank of solid medicament adding is made up, the mixing efficiency is improved, the mixing nonuniformity and the blocking condition are reduced, and the mechanization degree of the corrosion treatment of the oil-gas well is improved;
the Archimedes spiral line type arrangement method of the medicine discharger is matched with electric control, the uniformity of the medicine discharging process is realized, the high efficiency of medicine mixing is realized through the adaptation process of the electric control device, and meanwhile, the effectiveness of anticorrosion work and the medicine applying process is improved through the application of various sensors in the electric control system.
Drawings
FIG. 1 is an overall assembly view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of a water circulation structure according to the present invention;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a schematic view of the structure of the medicine mixer of the present invention;
in the figure: 1 is the medical kit, 2 is the frame, 3 is torque sensor, 4 is the magnetic powder stopper, 5 is speedtransmitter, 6 is row's medicine ware driving motor, 7 is the shaft coupling, 8 is the suction pump, 9 is 3/8 "hose, 10 is mixing the pencil, 11 is row's medicine ware shell, 12 is into the medicine funnel, 13 is into the medicine flange, 14 is laminar flow water pipe, 15 is the laminar flow pump, 16 is the bearing frame, 17 is the oil stain mouth, 18 is the hose entry, 19 is mixing the medicine pipeline flange, 20 is ABS send the medicine wheel, 21 is rigid connector, 22 is row's medicine shaft, 23 is ultrasonic density sensor, 24 is contact potential sensor.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
A device for adding solid medicament in an adaptive anti-blocking offshore oil and gas well comprises a rack 2, a medicament discharge device, a medicament mixing device, a hose mechanism and an electric control system, wherein the medicament discharge device is installed on the rack 2, the medicament mixing device is arranged below the medicament discharge device, an outlet of the medicament discharge device is communicated with an inlet of the medicament mixing device, one end of the hose mechanism extends into the medicament mixing device, the other end of the hose mechanism extends into an annular space of an annular space well, the electric control system is connected with a monitoring system, and various parameter values in the medicament discharge process are fed back to the monitoring system through the electric control system to arrange the working of the medicament discharge device;
the medicine discharging device comprises a medicine box 1, a medicine discharging device shell 11, a medicine conveying assembly and a driving assembly, wherein the outlet end of the medicine box 1 is connected with the inlet end of the medicine discharging device shell 11, the medicine box 1 and the medicine discharging device shell 11 are both arranged on the rack 2, the outlet end of the medicine discharging device shell 11 is communicated with the inlet of the medicine mixing device, the medicine conveying assembly is arranged in the medicine discharging device shell 11, the driving assembly is connected with the medicine conveying assembly, and the driving assembly is used for driving the medicine conveying assembly to slowly and uniformly convey solid medicines in the medicine box 1 into the medicine discharging device shell 11;
mix the medicine device including going into medicine funnel 12, go into medicine flange 13, mix medicine pipe 10 and laminar flow water pipe 14, the entry end of going into medicine funnel 12 is linked together with the exit end of arranging medicine ware shell 11, the exit end of going into medicine funnel 12 is linked together through going into medicine flange 13 and the income medicine mouth of seting up on mixing medicine pipe 10, oil stain mouth 17 and hose inlet 18 have been seted up respectively on the lateral wall of mixing medicine pipe 10 with the relative one side of income medicine mouth, mix medicine pipeline flange 19 is installed to the head end of medicine pipe 10, the tail end of mixing medicine pipe 10 is linked together with the delivery port of laminar flow water pipe 14, the water inlet of laminar flow water pipe 14 links to each other with the delivery port of laminar flow pump 15, hose mechanism stretches into from mixing medicine pipeline flange 19 and mixes in medicine pipe 10, stretch into the annular space of annular hollow well behind the suction pump 8 by hose inlet 18 department.
Example two
On the basis of the first embodiment, the medicine feeding assembly comprises an ABS medicine feeding wheel 20, a rigid connector 21 and a medicine discharging wheel shaft 22, wherein the ABS medicine feeding wheel 20 is fixed on the medicine discharging wheel shaft 22 through the rigid connector 21, and the ABS medicine feeding wheel 20 is arranged according to an Archimedes spiral line.
Drive assembly includes torque sensor 3, magnetic powder brake 4, velocity sensor 5, arrange medicine ware driving motor 6, shaft coupling 7 and bearing frame 16, the lateral wall that arranges medicine ware shell 11 is run through to the one end of arranging medicine shaft 22 passes through bearing frame 16 and links to each other with torque sensor 3, torque sensor 3 loops through shaft coupling 7, magnetic powder brake 4 and velocity sensor 5 link to each other with the output shaft of arranging medicine ware driving motor 6, velocity sensor 5 is used for confirming the rotational speed of arranging medicine shaft 22, and with speed signal transmission to controller, the controller passes through the function operation, confirm the required displacement of laminar flow pump, carry out drainage work.
An inspection window is opened on the side wall of the medicine box 1 for observing the amount of the solid medicine in the medicine box 1 to prevent the medicine feeding assembly from being blocked.
EXAMPLE III
On the basis of the second embodiment, an ultrasonic density sensor 23 is installed on one side, close to the oil stain opening 17, of the inner wall of the medicine mixing pipe 10, the ultrasonic density sensor 23 is used for detecting the density condition of a mixture in the medicine mixing pipe 10 to judge the mixing degree of the mixture, and transmitting a mixing degree signal to the controller, when the mixing degree of the mixture is poor, the sedimentation is large, the local density difference is large, and the nonuniformity is high, the controller is used for reducing the water supply flow of the laminar flow pump 15 so as to improve the mixing uniformity of the mixture and reduce sedimentation and concentration points, a contact potential sensor 24 is installed at the medicine mixing pipeline flange 19, when the contact potential at the medicine mixing pipeline flange 19 changes in resistance value due to rising of water level, the controller receives the change signal and presents the change signal on an electronic screen in real time, and convenience is brought to workers to switch the extraction of water flow.
The water inlet of the laminar flow pump 15 is connected with a water supply system, and the flow rate of the laminar flow pump 15 is determined by a speed sensor 5 and an ultrasonic density sensor 23 in an electric control device.
Example four
On the basis of the third embodiment, the electric control device comprises a speed sensor 5, a contact potential sensor 24, a torque sensor 3, an ultrasonic density sensor 23, a controller, a magnetic particle brake 4 and a laminar flow pump 15.
The speed sensor 5 determines the initial water flow rate of the laminar flow pump 15 from the rotational speed of the ejector drive motor 6.
The torque sensor 3 is used for monitoring the torque change of the drug discharging wheel shaft 22, when the torque signal of the drug discharging wheel shaft 22 exceeds a threshold value, the controller gives an alarm to remind an operator of abnormal drug discharging, the magnetic powder brake 4 carries out a braking instruction after receiving the signal, and the power between the drug discharger driving motor 6 and the drug discharging wheel shaft 22 is cut off to prevent damage.
EXAMPLE five
On the basis of the fourth embodiment, the hose mechanism adopts 3/ 8 'hoses 9 and 3/8' hoses 9, the hoses 9 extend into the annular space of the annular well from the hose inlet 18 through the water suction pump 8, the descending depth of the 3/8 'hoses 9 depends on the resistance of oil stain and seawater in the annular space, the maximum descending depth of the 3/8' hoses 9 is 50m, in the dosing process, the 3/8 'hoses 9 are lifted to a fixed height from the horizontal axis of the medicine mixing pipe 10, the 3/8' hoses 9 are lifted, and the suction stroke of the water suction pump 8 is 7m depending on the suction stroke of the water suction pump 8.
In the installation, through pulling down the manometer on the sleeve pipe cross flange, mix medicine pipeline flange 19 and meet through bolt and sleeve pipe cross flange, and then realize the purpose that sleeve pipe cross and mix medicine pipeline flange 19 are connected, carry the medicament to the annular space of annular space well purpose through mixing medicine pipe 10 and sleeve pipe cross, and then realize anticorrosive irritate the medicine operation at any time.
If the sleeve four-way flange can not be opened, the ball valve part on the sleeve four-way is directly disassembled, and the medicine mixing pipeline flange 19 is connected with the flange at the annular interface of the sleeve four-way, so that the annular of the annular well is directly communicated.
When the adaptive anti-blocking offshore oil and gas well solid medicament adding device is used, the adaptive anti-blocking offshore oil and gas well solid medicament adding device is carried out according to the following steps:
step 1: the solid medicament adding device is arranged on a pipeline four-way flange through a medicament mixing pipeline flange 19 to form a medicament adding system, the solid medicament is added into the medicament box 1, the system condition and the abrasion condition of each part are checked, the integrity of the electric control device is checked, and the electric control device is ready to work;
lifting 3/8 'flexible pipe 9 to a fixed height from the horizontal axis of the medicine mixing pipe 10, lifting 3/8' flexible pipe 9 to a height which depends on the suction distance of the water pump 8, wherein the suction distance of the water pump 8 commonly used on site is about 7m, keeping 3/8 'flexible pipe 9 always inside the flexible pipe inlet 18, connecting 3/8' flexible pipe 9 with the laminar flow pump 15, pumping clean water until the water in 7m is pumped out, and closing the laminar flow pump 15;
opening the medicine mixing pipe 10, connecting the laminar flow water pipe 14 and the laminar flow pump 15 with a water supply system, starting medicine adding operation, determining the rotation speed of a medicine discharging wheel shaft 22 by a speed sensor 5, transmitting the rotation signal to a controller, determining the water discharge amount required by the laminar flow pump 15 by the controller through function operation, performing water discharge operation, monitoring the torque of the medicine discharging wheel shaft 22 by a torque sensor 3, transmitting a real-time torque signal to the controller, comparing the signal value with a threshold value by the controller, generating an alarm if the signal value exceeds the threshold value, generating a braking action by a magnetic powder brake 4 at the moment, cutting off power, moving the mixture to one end of the medicine mixing pipe 10, passing through an ultrasonic density sensor 23, judging the mixing degree of the mixture by detecting the density condition of the mixture by the ultrasonic density sensor 23, transmitting the mixed signal to the controller, and when the mixing degree is poor, When the settlement is more, the local density difference is large, and the nonuniformity is high, the controller can lower the water supply flow of the laminar flow pump 15 at the moment, improve the mixing uniformity, reduce the settlement and concentration points, the contact potential sensor 24 at the medicine mixing pipeline flange 19, when the contact potential changes in resistance value due to the rising of the water level, the controller receives a change signal and displays the change signal on the electronic screen in real time, so that the steps of switching the water flow by a worker and the like are facilitated, when the liquid level reaches the medicine mixing pipe 10, the water supply system is closed, the water outlet of the laminar flow pump 15 is connected with the medicine mixing pipe 10 through the laminar flow water pipe 14, the water inlet of the laminar flow pump 15 is connected with the water supply system, the flow speed is determined by controlling a speed sensor 5 and an ultrasonic density sensor 23 of the system, a water suction pump 8 is turned on, pumping liquid in the annular space of the annular space well through a hose 9 of 3/8' until the liquid is dried in 7m, and repeating the steps until all the agents are added;
and step 3: close the medicament and add the system, the clearance machines to close the back with medicament addition system's ball valve, dismantle and mix medicine flange, carry out the inside washing of solid medicament interpolation device, guarantee that solid medicament interpolation device's inside does not have the residual medicament.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides an offshore oil gas well solid medicament adds device is prevented blockking up by adaptation which characterized in that: the automatic medicine mixing device comprises a rack, a medicine discharging device, a medicine mixing device, a hose mechanism and an electric control system, wherein the medicine discharging device is installed on the rack, the medicine mixing device is arranged below the medicine discharging device, an outlet of the medicine discharging device is communicated with an inlet of the medicine mixing device, one end of the hose mechanism extends into the medicine mixing device, the other end of the hose mechanism extends into an annular space of an annular space well, the electric control system is connected with the monitoring system, and various parameter values in the medicine discharging process are fed back to the monitoring system through the electric control system to work on the medicine discharging device;
the medicine discharging device comprises a medicine box, a medicine discharging device shell, a medicine conveying assembly and a driving assembly, wherein the outlet end of the medicine box is connected with the inlet end of the medicine discharging device shell, the medicine box and the medicine discharging device shell are both arranged on the rack, the outlet end of the medicine discharging device shell is communicated with the inlet of the medicine mixing device, the medicine conveying assembly is arranged in the medicine discharging device shell, the driving assembly is connected with the medicine conveying assembly, and the driving assembly is used for driving the medicine conveying assembly to slowly and uniformly convey solid medicines in the medicine box into the medicine discharging device shell;
mix the medicine device including going into the medicine funnel, going into the medicine flange, mixing pencil and laminar flow water pipe, the entry end of going into the medicine funnel with the exit end of arranging the medicine ware shell is linked together, the exit end of going into the medicine funnel passes through go into the medicine flange with mix the income medicine mouth of seting up on the pencil and be linked together, with the relative one side of income medicine mouth oil stain mouth and hose entry have been seted up on the lateral wall of mixing the pencil respectively, mix the head end of pencil and install and mix medicine pipeline flange, mix the tail end of pencil with laminar flow water pipe's delivery port is linked together, laminar flow water pipe's water inlet links to each other with laminar flow pump's delivery port, hose mechanism certainly mix medicine pipeline flange department and stretch into mix in the pencil, at last by the hose entrance stretches into in the annular space of annular space well behind the suction pump.
2. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 1, characterized in that: the medicine feeding assembly comprises an ABS medicine feeding wheel, a rigid connector and a medicine discharging wheel shaft, wherein the ABS medicine feeding wheel is fixed on the medicine discharging wheel shaft through the rigid connector and is arranged according to an Archimedes spiral line; and the side wall of the medicine box is provided with an inspection window for observing the amount of the solid medicines in the medicine box so as to prevent the medicine feeding assembly from being blocked.
3. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 2, characterized in that: the drive assembly comprises a torque sensor, a magnetic powder brake, a speed sensor, a medicine discharger drive motor, a coupler and a bearing seat, one end of a medicine discharger wheel shaft penetrates through the side wall of a medicine discharger shell, the bearing seat is connected with the torque sensor, the torque sensor sequentially passes through the coupler, the magnetic powder brake and the speed sensor, the output shaft of the medicine discharger drive motor is connected with the speed sensor, the speed sensor is used for determining the rotation speed of the medicine discharger wheel shaft and transmitting a speed signal to the controller, and the controller determines the required water discharge of the laminar flow pump through function operation and performs water discharge work.
4. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 1, characterized in that: and an ultrasonic density sensor is arranged on one side, close to the oil stain opening, of the inner wall of the medicine mixing pipe, and a contact potential sensor is arranged at the flange of the medicine mixing pipe.
5. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 1, characterized in that: and the water inlet of the laminar flow pump is connected with a water supply system, and the flow rate of the laminar flow pump is determined by a speed sensor and an ultrasonic density sensor in the electric control device.
6. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 1, characterized in that: the electric control device comprises a speed sensor, a contact potential sensor, a torque sensor, an ultrasonic density sensor, a controller, a magnetic powder brake and a laminar flow pump.
7. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 6, characterized in that: the speed sensor determines the initial water flow of the laminar flow pump through the rotating speed of the medicine discharger driving motor; the torque sensor is used for monitoring the torque change of the drug discharging wheel shaft, when the torque signal of the drug discharging wheel shaft exceeds a threshold value, the controller gives an alarm to remind an operator of abnormal drug discharging, the magnetic powder brake receives the signal and then carries out a braking instruction, and power between the drug discharging device driving motor and the drug discharging wheel shaft is cut off to prevent damage.
8. The adaptive anti-clogging solid agent adding device for offshore oil and gas wells according to claim 1, characterized in that: the hose mechanism adopts 3/8 "hose, 3/8" hose certainly in the hose entrance stretches into the annular space of annular well behind the suction pump, the depth of going into of 3/8 "hose depends on the resistance of annular greasy dirt and sea water, the maximum value of 3/8" hose depth of going into is 50m, adds the medicine in-process, will 3/8 "hose is lifted to apart from the fixed height department of the horizontal axis of mixing the pencil, 3/8" hose is lifted highly, depends on the suction stroke of suction pump, the suction stroke of suction pump is 7 m.
9. Use of the device adapted for adding solid pharmaceutical agents to anti-clogging offshore oil and gas wells according to any one of claims 1 to 8, carried out according to the following steps:
step 1: the method comprises the following steps of mounting a solid medicament adding device on a pipeline four-way flange through a medicament mixing pipeline flange to form a medicament adding system, adding the solid medicament into a medicament box, checking the system condition and the abrasion condition of each part, checking the integrity of an electric control device, and preparing for working;
step 2, after a medicament adding system is started, 3/8 'flexible pipes enter a medicament mixing pipe from a flexible pipe inlet and extend into an annular space of an annular well through a water suction pump, the setting depth depends on resistance of annular oil stain and seawater, the maximum value of the setting depth is 50m, a water supply system is firstly connected with a 3/8' flexible pipe, clean water is injected, oil stain on the pipe wall floats upwards when the water level rises, an oil-water mixture enters the medicament mixing pipe and is discharged from an oil stain port, the water supply system is closed after the oil-water mixture returns to be clean water, and the oil stain port is closed;
lifting the 3/8 'hose to a fixed height from the horizontal axis of the medicine mixing pipe, lifting the 3/8' hose to a height which depends on the suction distance of a water pump, wherein the suction distance of the water pump commonly used on site is about 7m, keeping the 3/8 'hose inside the inlet of the hose all the time, connecting the 3/8' hose with a laminar flow pump, pumping clean water until water in 7m is pumped out, and closing the suction laminar flow pump;
opening a medicine mixing pipe, connecting a laminar flow water pipe and a laminar flow pump with a water supply system, starting medicine adding operation, determining the rotation speed of a medicine discharging wheel shaft by a speed sensor, transmitting a rotation signal to a controller, determining the water discharge required by the laminar flow pump by the controller through function operation, performing water discharging operation, monitoring the torque of the medicine discharging wheel shaft by a torque sensor, transmitting a real-time torque signal to the controller, comparing the signal value with a threshold value by the controller, generating alarm if the signal value exceeds the threshold value, generating braking action by a magnetic powder brake at the moment, cutting off power, moving the mixture to one end of the medicine mixing pipe by an ultrasonic density sensor, judging the mixing degree of the mixture by detecting the density condition of the mixture by the ultrasonic density sensor, transmitting the mixed signal to the controller, and when the mixing degree is poor, the sedimentation is large, and the local density difference is large, when the nonuniformity is high, the controller regulates the water supply flow of the laminar flow pump downwards, the mixing uniformity is improved, the settlement and concentration points are reduced, a contact potential sensor is arranged at a flange of a medicine mixing pipeline, when the contact potential changes in resistance value due to rising of the water level, the controller receives a change signal and displays the change signal on an electronic screen in real time, the extraction of water flow is convenient for workers to switch, and the like, when the liquid level reaches a medicine mixing pipe, a water supply system is closed, the water outlet of the laminar flow pump is connected with the medicine mixing pipe through a laminar flow water pipe, the water inlet of the laminar flow pump is connected with the water supply system, the flow speed is determined through a speed sensor and an ultrasonic density sensor of a control system, a water suction pump is opened, liquid in the annular space of the annular empty well is sucked through an 3/8' hose to be sucked dry in 7m, and the steps are repeated until all the medicines are added;
and step 3: close the medicament and add the system, the clearance machines to close the back with medicament addition system's ball valve, dismantle and mix medicine flange, carry out the inside washing of solid medicament interpolation device, guarantee that solid medicament interpolation device's inside does not have the residual medicament.
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