CN113931596A

CN113931596A - Dosing device and dosing method for oil production well group of oil field

Info

Publication number: CN113931596A
Application number: CN202111545874.1A
Authority: CN
Inventors: 杨絮
Original assignee: Dongying Yuchen Technology Co ltd
Current assignee: Drums Of Daqing Petroleum Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-01-14
Anticipated expiration: 2041-12-17
Also published as: CN113931596B

Abstract

The invention relates to the technical field of dosing of oil field oil extraction well groups, and discloses a dosing device and a dosing method for an oil field oil extraction well group, which can accurately dose drugs while carrying out centralized detection on pipelines of the oil field oil extraction well group, and comprises a first box body, a box door, a control panel, a thickening agent box, a scale remover box, a water pipe, a ball valve, a pressure detector, a pipe wall thickness detection sensor, a fluid flow velocity detection sensor, a second box body and a crude oil pipeline; according to the invention, the interval dosing of different types of medicaments is realized through the thickening agent reducing medicament box and the scale remover medicament box which are arranged, the phenomenon that the medicaments cannot play a role continuously when the medicaments are added into a pipeline at one time is avoided, and meanwhile, different medicaments are correspondingly added into the petroleum pipeline according to different conditions in different pipelines due to the arrangement of the first medicament guide pipe and the second medicament guide pipe, so that the waste of the medicaments is avoided, and the effect and the efficacy of the medicaments are improved.

Description

Dosing device and dosing method for oil production well group of oil field

Technical Field

The invention relates to the technical field of chemical adding of oil extraction well groups, in particular to a chemical adding device and a chemical adding method for an oil extraction well group in an oil field.

Background

After an oil field enters the middle and later development stages, the water content gradually rises, meanwhile, the high water content causes scaling and corrosion of underground pipelines and sucker rods, and because of the exploitation of some difficultly-used reserves, some oil wells cause abnormal production of the oil wells and high wellhead return pressure due to thick oil, wax deposition and the like, the method for solving the problems comprises the steps of adding various chemical agents into the wells to achieve the purposes of corrosion inhibition, wax prevention and viscosity reduction, reducing the occurrence of accidents of clamping, blockage, breaking, falling off and the like of the sucker rods, the oil pipes and the oil well pumps, and maintaining the normal production of the oil wells, wherein the currently adopted medicine adding mode is that the agents are added from an annular space of an oil sleeve manually or by a medicine adding vehicle at regular time and in a quantitative mode, and the medicine adding mode has the following problems:

1. the medicament is added into the pipeline at one time, and cannot continuously play a role;

2. the well mouth has no water seepage and dilution conditions, so that the medicament is seriously hung on the wall, and the medicament cannot completely reach the well bottom;

3. the labor intensity of workers is high, the working efficiency is low, and the intelligent control of the oil well group operation is low;

4. when adding chemicals to an oil production well group, the consumption of chemical agents is large, the chemicals cannot be added to an oil pipeline in a targeted manner, and the phenomenon of agent waste exists.

To this end, we propose a dosing device for an oil field production well group.

Disclosure of Invention

The invention aims to provide a dosing device and a dosing method for an oil field oil extraction well group, a second connecting rod is driven by a rotary table to push a blocking ball to move up and down, so that quantitative dosing of a medicament to an oil pipe is realized, and the mounted thickening agent reducing medicament box and the descaling agent medicament box realize interval dosing of different types of medicaments, so that the consumption of the medicaments in the oil well group is reduced, the problem that the medicaments cannot play a role continuously when the medicaments are added into the pipeline at one time is solved, the consumption of the medicaments on the wall of the oil pipeline is reduced by controlling the medicaments and oil through a medicament discharging mechanism and a liquid inlet and outlet control mechanism, and finally most valves of the whole device are controlled electrically without needing to be started, so that the working strength of workers is reduced.

In order to achieve the purpose, the invention provides the following technical scheme:

a chemical adding device for an oil field oil extraction well group comprises a first box body, a box door, a control panel, a thickening agent reducing medicine box, a scale remover medicine box, a water pipe, a ball valve, a pressure detector, a pipe wall thickness detection sensor, a fluid flow velocity detection sensor, a second box body and a crude oil pipeline, wherein the thickening agent reducing medicine box and the scale remover medicine box are symmetrically fixed on the inner wall of one side of the first box body through bolts, a mixing mechanism is communicated with the bottoms of the thickening agent reducing medicine box and the scale remover medicine box and comprises a first shell and a partition plate, the partition plate divides the first shell into two parts, a first chemical guide pipe is installed at the bottom of the first shell positioned on one side of the thickening agent reducing medicine box, a second chemical guide pipe is installed at the bottom of the first shell positioned on one side of the scale remover medicine box, a gas collecting tank is fixed on the inner wall of the bottom of the first box body through bolts, and two air pipes are arranged on the gas collecting tank, one end of one air pipe is communicated with the first medicine guide pipe, one end of the other air pipe is communicated with the second medicine guide pipe, and one end, far away from the air pipe, of the second medicine guide pipe is provided with a first plug valve;

one end of the second medicine guide pipe is connected with a medicine discharging mechanism, the medicine discharging mechanism comprises a second shell, a pressure detector is installed on the second medicine guide pipe between the first plug valve and the second shell, the other end of the second medicine guide pipe installed on the medicine discharging mechanism is communicated with a liquid inlet and outlet control mechanism, the liquid inlet and outlet control mechanism comprises a third shell, the other end of the second medicine guide pipe on the third shell is uniformly provided with the second plug valve, and is communicated with a crude oil pipeline on the second plug valve, the crude oil pipeline is communicated with an electric control valve mechanism, the electric control valve mechanism comprises a fourth shell, a connecting groove, a piston and a gas outlet, the gas outlet is formed on the fourth shell, the connecting groove is formed in the fourth shell, the piston is installed in the connecting groove, the other end of the crude oil pipeline on the fourth shell is communicated with a pipe wall thickness detection sensor, a fluid flow velocity detection sensor is fixed on the fourth shell through a bolt;

the electric control valve mechanism also comprises a data acquisition processing module and a signal transceiving module;

the data acquisition and processing module is used for collecting the numerical value of the pipe wall thickness of the crude oil pipeline detected by the pipe wall thickness detection sensor and the numerical value of the oil flow velocity in the crude oil pipeline detected by the fluid flow velocity detection sensor, comparing the numerical values with preset values in the processing module, processing and sending the compared numerical values to the signal transceiver module, finally collecting and amplifying signals through the signal transceiver module, and sending the processed signals to the control panel and the second box body respectively.

Further, the mixing mechanism still includes carousel, spout, flows the medicine mouth and connects the medical dish, the spout has been seted up in the first casing, and is located one side inner wall of spout and has the carousel through bearing swing joint, one side of carousel is rotated through the bearing and is connected with the head rod, and the one end that is located the head rod is rotated through the bearing and is connected with the second connecting rod, install the push pedal on the second connecting rod and be located the spout, and the top that is located the push pedal is fixed with the rubber block through the adhesion, the bottom inner wall of first casing is installed and is connected the medical dish, be equipped with the medicine mouth that flows that is used for the intercommunication to connect medical dish and spout on the spout.

Furthermore, one end of the water pipe penetrates through the first shell and the partition plate respectively and extends into the two medicine receiving vessels, the water pipe in the medicine receiving vessels is provided with a spray head, the inside of the thickening agent reducing medicine box and the inside of the scale remover medicine box are provided with blocking balls, and the bottoms of the thickening agent reducing medicine box and the scale remover medicine box are communicated with the two sliding chutes respectively.

Further, arrange medicine mechanism still includes rocking wheel, first threaded rod, ejector pad and diaphragm, the bilateral symmetry of second casing is installed and is rocked the wheel, and is located the one end of rocking the wheel and is connected with the first threaded rod in the second casing, sliding connection has the ejector pad in the second casing, and is located one side of ejector pad and installs the arc rubber slab, the spring is installed with the ejector pad opposite face to the arc rubber slab, just the opposite face that is located two arc rubber slabs in the second casing installs the diaphragm.

Further, business turn over liquid control mechanism still includes second threaded rod, standing groove, fourth plug valve, sprue, blow vent and logical medicine mouth, install the fourth plug valve on the third casing, and be located the one end that the fourth plug valve is located the third casing and be fixed with the second threaded rod through spot welding, the bottom of second threaded rod is fixed with the sprue through spot welding, the standing groove has been seted up to the bottom inner wall of third casing, the blow vent has been seted up on the sprue, and the bottom that is located the blow vent has seted up logical medicine mouth.

Furthermore, the first medicine guide pipe is communicated with a fourth shell, electric control valves are installed at two ends of the fourth shell, third plug valves are evenly installed on the crude oil pipeline, ball valves are installed on sections, located in the first box, of the first medicine guide pipe and the second medicine guide pipe, and an element control module is arranged in the second box;

the element control module receives the electric signal amplified by the signal receiving and transmitting module, and the element control module after receiving the signal is connected and controlled by a lead to open and close the third plug valve, the piston on the fourth shell and the second plug valve.

A dosing method of a dosing device for an oil field production well group comprises the following specific processes:

s1: firstly, manually screwing down a blocking block in the liquid inlet and outlet control mechanism through a fourth plug valve to enable the second medicine guide pipe and a crude oil pipeline to be in a cut-off state, placing scale remover powder in a scale remover medicine box in advance, controlling the dosage of the scale remover entering the second medicine guide pipe through the rotation times of a rotary disc, enabling the rotary disc to rotate for a circle, enabling the dosage of the scale remover powder entering a medicine receiving vessel to be 8-15 g, directly controlling the rotation number of the rotary disc through a control panel, enabling a water pipe to be filled with water when the scale remover dosage in the medicine receiving vessel reaches a preset value, enabling water to be sprayed out through a spray head to dissolve the scale remover, and enabling the dissolved scale remover to enter a second shell through the second medicine guide pipe;

s2: at the moment, a worker manually operates the control panel to open the third plug valve, the front piston and the rear piston on the fourth shell and the second plug valve, and then manually moves the fourth plug valve to the central position to enable the vent to be clamped with the pipe orifice of the diaphragm pipe, so that gas comes out of the pipeline at the front end of the crude oil pipeline firstly due to associated gas mixed in the oil in the crude oil pipeline, the oil flows out after the gas is exhausted, the oil associated gas enters the gas collecting tank through the crude oil pipeline, the second medicine guide pipe and the gas pipe, when the oil begins to flow out from the crude oil pipeline, the oil flows to the front end of the electric control valve mechanism, the piston on the fourth shell blocks the fourth shell, and meanwhile, the fluid flow velocity detection sensor measures the oil flow velocity in the crude oil pipeline;

marking the flow speed data acquired by the fluid flow speed detection sensor on each pipeline as ai, marking the petroleum pipeline as i, wherein i is a natural number greater than 1, and marking the flow speed data acquired by the fluid flow speed detection sensor on each pipeline as ai value to be stored in the data acquisition and processing module;

marking the flow rate data of the petroleum flowing in the pipeline under the constant temperature and pressure normal state as a conventional petroleum flow rate threshold value, setting the label as A, and then storing the value A into a data acquisition and processing module;

dividing a raw oil pipeline of an oil extraction well group into o sub-pipelines, wherein o is a natural number more than 1;

comparing the flow speed data ai acquired by the fluid flow speed detection sensor on the o sub-pipelines with the conventional oil flow speed threshold value A in the data acquisition and processing module to obtain:

if the flow speed difference threshold value between the A and the ai is less than or equal to 0.15m/s, judging that the flow speed of the petroleum in the ai pipeline is in a normal range, and generating no thickening and paraffin control signal by the data acquisition processing module;

if the flow speed difference threshold value between A and ai is more than 0.15m/s, judging that the flow speed of petroleum in the ai pipeline is abnormal, sending a viscosity-reducing and wax-preventing control signal to an element control module and a control panel by a data acquisition and processing module, controlling the opening of pistons at the left side, the right side and the front end of a fourth shell by the element control module so as to control the contact of a viscosity-reducing and wax-preventing medicament and the petroleum, transmitting pipeline information added with the viscosity-reducing and wax-preventing medicament to a worker by a display screen on the control panel, wherein the pipeline information comprises the serial number of the pipeline, the flow speed of the petroleum in the pipeline and a change curve of the flow speed of the petroleum in the petroleum pipeline added with the viscosity-reducing and wax-preventing medicament within 0-10 min;

s3: the pipe wall thickness detection sensor positioned on the crude oil pipeline detects the thickness of the inner wall of each crude oil pipeline, the pipe wall thickness value detected on each crude oil pipeline is marked as hi, and the numerical value hi is transmitted to the data acquisition and processing module;

labeling the tube length value as Ci;

marking the petroleum pipelines in the oil extraction well group as i, wherein i is a natural number more than 1;

marking the thickness data of the petroleum pipeline pipe wall when leaving the factory as a standard petroleum pipeline thickness threshold value, setting the marking as H, and then storing the numerical value of H into a data acquisition and processing module;

comparing a standard petroleum pipeline thickness threshold value H set in the data acquisition processing module with a pipe wall thickness value hi detected on a crude oil pipeline in the same pipe length value Ci, and comparing the values of H and hi through the data acquisition processing module to obtain:

when hi is greater than H and the numerical value is less than or equal to 8mm, the data acquisition processing module judges the numerical value as a normal numerical value, the normal numerical value refers to that the thickness of dirt adhered to the wall of the crude oil pipe is larger than or equal to 0mm and smaller than or equal to 8mm, the dirt is judged as a normal numerical value, and a pipe wall thickness control signal cannot be generated;

when hi is greater than H and the numerical value is greater than 8mm, the data acquisition and processing module judges that the pipe wall is abnormal in dirt, the data acquisition and processing module transmits a generated pipe wall thickness control signal to the element control module, the element control module controls a piston at the front end of the corresponding fourth shell to be opened, an air outlet at the top of the fourth shell to be opened and a second plug valve to be opened, meanwhile, a worker knows that a descaling agent needs to be added into a pipeline of the oil well group through a control panel and turns the fourth plug valve to the highest position, the descaling agent in the second shell is contacted with oil in a crude oil pipeline, and the dosing of a fixed pipeline in the oil well group is completed;

when H is larger than hi and the numerical value is smaller than 8mm, a warning signal is generated, the data acquisition processing module transmits the warning signal and the information of the pipeline corresponding to the number i to the control panel, and a display screen on the control panel flickers a yellow early warning lamp corresponding to the number i, so that a worker is informed that the pipeline corresponding to the number i is worn;

when H > hi, and numerical value when being greater than 8mm, generate alarm signal, data acquisition processing module passes alarm signal to component control module, all pistons on the fourth casing of component control module control are closed, data acquisition processing module sends the alarm signal that corresponds on the pipeline i for control panel simultaneously, and the information transmission that will change pipeline i through the display screen on the control panel gives the staff, the information of changing the pipeline simultaneously sends for central control room in the lump, central control room adds the personnel of dispatching and inspects and salvagees No. i pipeline.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the petroleum pipeline anti-thickening agent feeding device, different kinds of agents are fed at intervals through the thickening agent dropping box and the scale remover box which are installed at the same time, the phenomenon that the agents cannot play a role continuously when the agents are added into a pipeline at one time is avoided, meanwhile, different agents are correspondingly added into the petroleum pipeline according to different conditions in different pipelines due to the arrangement of the first medicine guide pipe and the second medicine guide pipe, the waste of the agents is avoided, and meanwhile, the effect and the efficacy of the agents are improved;

2. according to the invention, the arc-shaped rubber plate is abutted to the liquid medicament through the rotary rocking wheel, the arc-shaped rubber plate continuously generates vibration, the liquid medicament continuously washes the second medicament guide pipe, the dissolution of the medicament is improved, the loss of medicament wall hanging is reduced, the gas collection tank exhausts gas to push the flow velocity of the liquid medicament, and the medicament with slow flow velocity is prevented from being attached to the pipe wall;

3. in the invention, the control of a plurality of scattered valves on the oil well group is realized through the element control module, so that the working efficiency is low while the time and labor are wasted because workers adjust the valves one by one, the conditions of oil pipes on the oil well group can be clearly known through the installed control panel, and the workers can operate the valves conveniently;

4. according to the invention, the second connecting rod is driven by the turntable to push the blocking ball to move up and down, so that the quantitative addition of the chemicals to the oil pipe is realized, compared with the conventional oil well dosing, the controllability of the chemical dosage is strong, and the waste of the chemicals caused by one-time addition is avoided.

Drawings

FIG. 1 is a schematic sectional front view of an a-a overall structure according to the present invention;

FIG. 2 is a schematic front sectional view of the overall structure of b-b of the present invention;

FIG. 3 is a schematic top view of the overall structure of the present invention;

FIG. 4 is a schematic view of the connection structure of the discharge mechanism and the inlet and outlet control mechanism of the present invention;

FIG. 5 is a schematic sectional view of the drug dispensing mechanism of the present invention;

FIG. 6 is a schematic structural view of a front view cross section of the liquid inlet and outlet control mechanism of the present invention;

FIG. 7 is a schematic front cross-sectional view of a mixing mechanism of the present invention;

FIG. 8 is an enlarged view of the structure at A of the present invention;

FIG. 9 is an enlarged view of the structure at B of the present invention;

FIG. 10 is a schematic view of the connection structure of the diaphragm tube and the gas collection tank of the present invention;

FIG. 11 is a block diagram of the control mechanism workflow of the present invention.

In the figure: 1. a first case; 2. a box door; 3. a control panel; 4. a thickener reducing agent kit; 5. a detergent kit; 6. a mixing mechanism; 601. a first housing; 602. a partition plate; 603. a turntable; 604. a first connecting rod; 605. a second connecting rod; 606. pushing the plate; 607. a rubber block; 608. a medicine flowing port; 609. a medicine receiving vessel; 610. a chute; 7. a water pipe; 8. a first drug delivery tube; 9. a second drug delivery tube; 10. an air tube; 11. a gas collection tank; 12. a ball valve; 13. a first plug valve; 14. a pressure detector; 15. a drug discharge mechanism; 151. a second housing; 152. shaking the wheel; 153. a first threaded rod; 154. a push block; 155. a spring; 156. an arc-shaped rubber plate; 157. a diaphragm tube; 16. a liquid inlet and outlet control mechanism; 161. a third housing; 162. a fourth plug valve; 163. a second threaded rod; 164. blocking; 165. a vent; 166. a medicine opening; 167. a placement groove; 17. an electrically controlled valve mechanism; 171. a fourth housing; 172. connecting grooves; 173. a piston; 174. an air outlet; 18. a second plug valve; 19. a pipe wall thickness detection sensor; 20. a third plug valve; 21. a spray head; 22. blocking the ball; 23. a fluid flow rate detection sensor; 24. a second case; 25. a crude oil pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution:

example 1:

as shown in fig. 1-2, 7 and 9, a chemical adding device for an oil field production well group comprises a first box body 1, a box door 2, a control panel 3, a thickening agent medicine box 4, a descaling agent medicine box 5, a water pipe 7, a ball valve 12, a pressure detector 14, a pipe wall thickness detection sensor 19, a fluid flow rate detection sensor 23, a second box body 24 and a crude oil pipeline 25.

The thickening agent medicine box and the descaling agent medicine box 5 are symmetrically fixed on the inner wall of one side of the first box body 1 through bolts, the bottom of the thickening agent medicine box 4 and the descaling agent medicine box 5 is communicated with a mixing mechanism 6, the mixing mechanism 6 comprises a first shell 601 and a partition 602, the partition 602 divides the first shell 601 into two halves, a first medicine guide pipe 8 is installed at the bottom of the first shell 601 located on one side of the thickening agent medicine box 4, a second medicine guide pipe 9 is installed at the bottom of the first shell 601 located on one side of the descaling agent medicine box 5, a gas collecting tank 11 is fixed on the inner wall of the bottom of the first box body 1 through bolts, two gas pipes 10 are arranged on the gas collecting tank 11, one end of one gas pipe 10 is communicated with the first medicine guide pipe 8, one end of the other gas pipe 10 is communicated with the second medicine guide pipe 9, and a first plug valve 13 is installed at one end, far away from the gas pipe 10, of the second medicine guide pipe 9.

One end of the second drug guiding tube 9 is connected with a drug discharging mechanism 15, the drug discharging mechanism 15 comprises a second shell, a pressure detector 14 is installed on the second drug guiding tube 9 between the first plug valve 13 and the second shell 151, the other end of the second drug guiding tube 9 installed on the drug discharging mechanism 15 is communicated with a liquid inlet and outlet control mechanism 16, the liquid inlet and outlet control mechanism 16 comprises a third shell 161, a third shell is provided, a second plug valve 18 is evenly installed at the other end of the second drug guiding tube 9 on the third shell 161, a crude oil pipeline 25 is communicated with the second plug valve 18, an electric control valve mechanism 17 is communicated with the crude oil pipeline 25, the electric control valve mechanism 17 comprises a fourth shell 171, a connecting groove 172, a piston 173 and an air outlet 174, an air outlet 174 is arranged on the fourth shell 171, a connecting groove 172 is arranged in the fourth shell 171, a piston 173 is installed in the connecting groove 172, and the other end of the crude oil pipeline 25 on the fourth shell 171 is communicated with a tube wall thickness detecting sensor 19, a fluid flow rate detection sensor 23 is fixed to the fourth case 171 by a bolt;

the electric control valve mechanism 17 also comprises a data acquisition processing module and a signal transceiving module; the data acquisition processing module is used for collecting the numerical value of the pipe wall thickness of the crude oil pipeline 25 detected by the pipe wall thickness detection sensor 19 and the numerical value of the oil flow velocity in the crude oil pipeline 25 detected by the fluid flow velocity detection sensor 23, comparing the numerical values with preset values in the processing module, processing and sending the compared numerical values to the signal transceiver module, finally collecting and amplifying signals through the signal transceiver module, and sending the processed signals to the control panel 3 and the second box body 24 respectively.

As shown in fig. 7 and 9, the mixing mechanism 6 further includes a rotating disc 603, a sliding groove 610, a drug flowing port 608, and a drug receiving vessel 609, the first housing 601 has a sliding groove 610 therein, the inner wall of one side of the sliding groove 610 is movably connected with the rotating disc 603 through a bearing, one side of the rotating disc 603 is rotatably connected with a first connecting rod 604 through a bearing, one end of the first connecting rod 604 is rotatably connected with a second connecting rod 605 through a bearing, the second connecting rod 605 is provided with a push plate 606 in the sliding groove 610, the top of the push plate 606 is fixed with a rubber block 607 through adhesion, the drug receiving vessel 609 is installed on the inner wall of the bottom of the first housing 601, and the sliding groove 610 is provided with the drug flowing port 608 for connecting the drug receiving vessel 609 and the sliding groove 610. When the push plate 606 is flush with the medicine flow port 608, the medicine liquid flows into the medicine receiving vessel 609 from the slide groove 610.

One end of the water pipe 7 penetrates through the first shell 601 and the partition 602 respectively and extends into the two medicine receiving vessels 609, the spray head 21 is installed on the water pipe 7 in the medicine receiving vessels 609, the blocking balls 22 are installed in the thickening agent reducing medicine box 4 and the scale remover medicine box 5, and the bottoms of the thickening agent reducing medicine box 4 and the scale remover medicine box 5 are communicated with the two sliding chutes 610 respectively.

When the quantitative dosing is realized, during specific operation, a worker needs to add agents with different functions and forms into the thickening agent reducing medicine box 4 and the scale remover medicine box 5 in the first box body 1, the thickening agent reducing wax-proof agent is in a liquid state in a normal state, the scale remover is in a solid state, the scale remover is added into the scale remover medicine box 5, the thickening agent reducing wax-proof agent is added into the thickening agent reducing medicine box 4, the two medicine boxes are both provided with the blocking ball 22, the blocking ball 22 is made of rubber with good sealing performance, when the two agents are added into the medicine boxes, the gravity of the agents acts on the blocking ball 22 to block the chute 610, and the agents cannot enter the first medicine guide pipe 8 and the second medicine guide pipe 9;

when the power mechanism drives the rotating disc 603 on the mixing mechanism 6 to rotate, the first connecting rod 604 on the rotating disc 603 drives the second connecting rod 605 to move up and down in the sliding slot 610, when the first connecting rod 604 on the rotating disc 603 moves to the highest position, the second connecting rod 605 lifts the clogging ball 22, meanwhile, the push plate 606 in the chute 610 is flush with the medicine flowing port 608, the viscosity-reducing and wax-preventing agent and the descaling agent flow from the medicine flowing port 608 to the medicine receiving vessel 609, when the second connecting rod 605 does not rancour reach the blocking ball 22, the medicine box can not be loaded, and by knowing the quality of the medicine falling into the medicine receiving vessel 609 every time the rotary disc 603 rotates, the quantitative feeding of the petroleum well group can be realized by controlling the rotation number of the rotary disc 603, and simultaneously the partition 602 equally divides the first shell 601 into two parts, the rubber block 607 positioned on the push plate 606 prevents the liquid medicament from flowing out from the side wall of the sliding chute 610;

when the medicament in the medicament receiving vessel 609 needs to be diluted or dissolved by adding water, the spray head 21 on the water pipe 7 in the first shell 601 sprays water to dilute or dissolve the medicament in the medicament receiving vessel 609, and the diluted viscosity-reducing and wax-preventing medicament and the dissolved descaling medicament enter the crude oil pipeline 25 from the first medicament guide pipe 8 and the second medicament guide pipe 9 respectively to exert the medicament effect.

Example 2:

as shown in fig. 5, the medicine discharging mechanism 15 further includes a rocking wheel 152, a first threaded rod 153, a pushing block 154 and a diaphragm, the rocking wheel 152 is symmetrically installed on two sides of the second casing 151, one end of the rocking wheel 152 is connected with the first threaded rod 153 in the second casing 151, the pushing block 154 is slidably connected in the second casing 151, an arc-shaped rubber plate 156 is installed on one side of the pushing block 154, a spring 155 is installed on the opposite surface of the arc-shaped rubber plate 156 and the pushing block 154, and the diaphragm is installed on the opposite surface of the two arc-shaped rubber plates 156 in the second casing 151.

As shown in fig. 6, the liquid inlet and outlet control mechanism 16 further includes a second threaded rod 163, a placement groove 167, a fourth plug valve 162, a blocking block 164, a vent hole 165 and a medicine inlet 166, the third casing 161 is provided with the fourth plug valve 162, one end of the fourth plug valve 162 located in the third casing 161 is fixed with the second threaded rod 163 through spot welding, the bottom of the second threaded rod 163 is fixed with the blocking block 164 through spot welding, the placement groove 167 is opened on the inner wall of the bottom of the third casing 161, the vent hole 165 is opened on the blocking block 164, and the medicine inlet 166 is opened at the bottom of the vent hole 165.

The first medicine guide pipe 8 is communicated with the fourth shell 171, the two ends of the fourth shell 171 are provided with electric control valves, the crude oil pipeline 25 is uniformly provided with a third plug valve 20, the sections of the first medicine guide pipe 8 and the second medicine guide pipe 9 in the first box body 1 are provided with ball valves 12, and the second box body 24 is internally provided with an element control module;

the element control module receives the electric signal amplified by the signal transceiver module, and the element control module after receiving the signal is connected to control the opening and closing of the third plug valve 20, the piston 173 on the fourth housing 171, and the second plug valve 18 through wires.

As shown in fig. 1-6 and fig. 10, the chemical adding device for an oil field production well group controls the petroleum, the descaling agent and the viscosity and paraffin reducing and preventing agent in the pipeline, during the specific operation, the descaling agent is located in the second chemical guide pipe 9, as can be understood from example 1, after the descaling agent is diluted by adding water, the worker opens the ball valve 12 and the first plug valve 13 on the second chemical guide pipe 9 at the same time, the first plug valve 13 is used as one of the main valves to control the descaling agent to be contacted with the petroleum in the oil field production well group, the single main valve can adopt two control means of circuit control and manual control, and the chemical adding device for the oil field production well group adopts manual control;

the descaling agent enters the second shell 151 in the medicine discharging mechanism 15 along the second medicine guide tube 9, and because the fourth plug valve 162 in the liquid inlet and outlet control mechanism 16 is positioned at the bottommost part, the second threaded rod 163 in the third shell 161 drives the blocking block 164 to block the pipeline path of the second medicine guide tube 9, so that the descaling agent stays in the second shell 151, and in order to prevent the descaling agent from precipitating in the second shell 151 and reduce the efficacy of the descaling agent, a worker can manually rotate the rocking wheel 152 to make the two first threaded rods 153 and the pushing block 154 move oppositely to push the descaling agent in the second shell 151, so that the descaling agent in the second shell 151 is continuously shaken, and meanwhile, the spring 155 and the arc-shaped rubber plate 156 mounted on the pushing block 154 increase the movement amplitude of the descaling agent and simultaneously prevent the descaling agent from leaking out of the second shell 151;

the descaling agent is positioned in the second shell 151, the viscosity-reducing and wax-preventing agent is positioned in the medicine receiving vessel 609, after the two agents are prepared, a worker controls a data acquisition processing module on the electric control valve mechanism 17 through a button on a control panel 3 on the surface of the box door 2, the data acquisition processing module sends the opening information of the third plug valve 20, the pistons 173 in front of and behind the fourth shell 171 and the second plug valve 18 to an element control module in the second box 24, the element control module opens each valve and each piston 173 through a lead and an adjusting device, and a display screen positioned on the control mechanism can synchronously know the opening and closing states of the valves of each pipeline;

the reason why the valves and the piston 173 are opened by the element control module in the initial state is that associated gas of petroleum is generally generated in a petroleum pipeline of the oil extraction well group, the associated gas of petroleum is gas overflowing along with the petroleum in an oil layer, and natural gas partially dissolved in the petroleum, and contains a small amount of volatile liquid hydrocarbon and trace impurities such as carbon dioxide, nitrogen, hydrogen sulfide and the like besides more methane and ethane, after the associated gas in the pipeline is exhausted, the petroleum flows out in the pipeline, the associated gas generated in the normal state is commonly used for heating crude oil by a heating furnace of a pressurization station, energy is saved, and pollution to the atmosphere is reduced, the associated gas in the device enters the second medicine guide pipe 9 through a crude oil pipeline 25, and the petroleum gas reaches the liquid inlet and outlet control mechanism 16 through the second plug valve 18, at this time, the blocking block 164 in the liquid inlet and outlet control mechanism 16 is in a sealed state, and a worker can know the pressure value in the pipeline between the crude oil pipeline 25 and the third casing 161 through the pressure value displayed on the pressure detector 14, when the pressure value on the pressure detector 14 reaches the alarm value, the buzzer on the pressure detector 14 gives an alarm sound to remind the worker to rotate the fourth plug valve 162 on the third casing 161, when the fourth plug valve 162 rotates 3 circles, the blocking block 164 in the third casing 161 returns to the middle position, the oil accompanying gas in the second medicine guide pipe 9 enters the diaphragm pipe 157 in the second casing 151 through the vent 165 on the blocking block 164, as shown in fig. 10, the accompanying gas enters the diaphragm pipe 157 and simultaneously props up the diaphragm pipe 157, at this time, the second casing 151 and the surrounding of the diaphragm pipe 157 are all the detergent solution, the accompanying gas continuously impacts the detergent solution in the second casing 151, the descaling agent solution impacts the arc-shaped rubber plate 156, and due to the spring 155 arranged on one side of the arc-shaped rubber plate 156, the descaling agent continuously vibrates between the arc-shaped rubber plate 156 and the diaphragm pipe 157, and the descaling agent solution also plays a role in preventing the descaling agent from precipitating, and accompanying gas enters the gas collection tank 11 along the diaphragm pipe 157;

after associated gas in the oil pipeline is exhausted, oil begins to enter the crude oil pipeline 25, the pipe wall thickness detection sensor 19 and the fluid flow rate detection sensor 23 begin to detect the oil flow rate in each crude oil pipeline 25 and the pipeline wall thickness of the crude oil pipeline 25, and transmit the acquired data to the data acquisition and processing module, when the oil reaches the position of the piston 173 at the front end of the fourth shell 171, which is in contact with the crude oil pipeline 25, is closed, so that the oil is located in the crude oil pipeline 25 and cannot enter the first drug guide pipe 8 and the second drug guide pipe 9, at this time, information processed by the data acquisition and processing module is waited, and meanwhile, the fourth plug valve 162 on the third shell 161 rotates to the bottommost part;

through the pretreatment of the two types of medicaments in the embodiment 1 and the adjustment and the introduction of the petroleum in the embodiment 2, the electric control valve mechanism 17 is taken as a central intersection point, the information acquired by the two types of sensors on each crude oil pipeline 25 and the data processing result acquired by the data acquisition and processing module are waited, and finally the information result is executed through the element control module, so that the two types of medicaments are sent to the corresponding crude oil pipeline 25, the precise dosing of the crude oil pipeline 25 is realized, and the waste of the medicaments is avoided.

Example 3:

as shown in fig. 1-3, 5 and 6, a dosing device for an oilfield production well group accurately dispenses medication.

The system modules adopted by the chemical adding device of the oil field oil extraction well group are shown in figure 11, and the modules have the following functions: the liquid flow velocity detection module is used for detecting the flow velocity value of the petroleum in each pipeline in the oil extraction well group and is realized through a fluid flow velocity detection sensor 23;

the pipe wall thickness detection module is used for detecting the pipe wall thickness value of each pipeline in the oil extraction well group and is realized through a pipe wall thickness detection sensor 19;

the data acquisition and processing module is used for storing the flow velocity data value of the petroleum flowing in the pipeline under the constant temperature and pressure normal state and the pipe wall thickness value of the petroleum pipeline when leaving the factory, respectively comparing the normal flow velocity value of the petroleum with the value acquired by the liquid flow velocity detection module and the data acquired by the conventional pipeline thickness and pipe wall thickness detection module, converting the data obtained after comparison into corresponding processing signals and transmitting the processing signals to the signal transceiver module, the central control room and the control panel;

the signal receiving and transmitting module is used for receiving the signals processed in the data acquisition and processing module and transmitting the signals to the element control module, and receiving the signals transmitted in the element processing module and transmitting the signals to the data acquisition and processing module;

the element control module is used for controlling the opening and closing of a part of valves on the petroleum pipeline;

the control panel 3 is used for converting the data processed in the data acquisition and processing module into corresponding other signals for workers to know about the petroleum pipeline and the specific conditions of petroleum in the petroleum pipeline;

and the central control room is used for receiving the alarm signal sent out by the data acquisition and processing module and recording the problems in the petroleum pipeline.

During specific operation, the blocking block 164 in the liquid inlet and outlet control mechanism 16 is manually screwed down through the fourth plug valve 162, so that the second medicine guide pipe 9 and the crude oil pipeline 25 are in a blocking state, descaling agent powder is placed in the descaling agent medicine box 5 in advance, the dosage of the descaling agent entering the second medicine guide pipe 9 is controlled through the rotation times of the rotary disc 603, the rotary disc 603 rotates for a circle, the dosage of the descaling agent entering the medicine receiving vessel 609 is 8-15 g, the rotation number of the rotary disc 603 can be directly controlled through the control panel 3, when the descaling agent in the medicine receiving vessel 609 reaches a preset value, the water pipe 7 is filled with water, the water flow is sprayed out through the spray head 21 to dissolve the descaling agent, and the dissolved descaling agent enters the second shell 151 through the second medicine guide pipe 9;

at this time, the worker manually operates the control panel 3 to open the third cock valve 20, the front and rear pistons 173 of the fourth housing 171, and the second cock valve 18, and manually moves the fourth cock valve 162 to move the stopper 164 to the center position, the vent 165 is clamped with the mouth of the diaphragm tube 157, at this time, the accompanying gas in the crude oil pipeline 25 is mixed with the petroleum, so that the gas comes out from the pipeline at the front end of the crude oil pipeline 25 firstly, after the gas is exhausted, then the petroleum will flow out, the petroleum associated gas enters the gas collecting tank 11 through the crude oil pipeline 25, the second medicine guide pipe 9 and the gas pipe 10, when the oil starts to flow out from the crude oil pipeline 25 and flows to the front end of the electric control valve mechanism 17, the piston 173 on the fourth housing 171 blocks the fourth housing 171, meanwhile, the fluid flow velocity detection sensor 23 measures the flow velocity of the oil in the crude oil pipeline 25;

marking the flow speed data acquired by the fluid flow speed detection sensor 23 on each pipeline as ai, and marking the petroleum pipeline as i, wherein i is a natural number greater than 1;

marking the flow rate data of the petroleum flowing in the pipeline under the constant temperature and pressure normal state as a conventional petroleum flow rate threshold value, marking the conventional petroleum flow rate threshold value as A, and then storing the value of A into a data acquisition and processing module;

dividing the crude oil pipeline 25 of the oil extraction well group into o sub-pipelines, wherein o is a natural number more than 1;

comparing the flow speed data ai acquired by the fluid flow speed detection sensor 23 on each pipeline with a conventional oil flow speed threshold value A to obtain:

if the flow speed difference threshold value between the A and the ai is less than or equal to 0.15m/s, judging that the flow speed of the petroleum in the ai pipeline is in a normal range, and not generating a thickening and paraffin control signal by the data acquisition and processing module;

if the flow speed difference threshold value between A and ai is more than 0.15m/s, judging that the flow speed of petroleum in the ai pipeline is abnormal, generating a thickening-reducing and paraffin-preventing control signal, sending the thickening-reducing and paraffin-preventing control signal to an element control module and a control panel 3 by the data acquisition and processing module, controlling pistons 173 on the left side, the right side and the front end of a fourth shell 171 to be opened by the element control module, controlling the contact of a thickening-reducing and paraffin-preventing medicament and the petroleum, transmitting pipeline information added with the thickening-reducing and paraffin-preventing medicament to a worker by a display screen on the control panel 3, wherein the pipeline information comprises the number of the pipeline, the flow speed of the petroleum in the pipeline and a change curve of the flow speed of the petroleum in the petroleum pipeline added with the thickening-reducing and paraffin-preventing medicament within 0-10 min;

as shown in fig. 3, if the flow rate of oil in the marked No. 3 pipeline in the oil recovery well group is slow, the piston 173 in the front end connecting groove 172 in the fourth casing 171 on the No. 3 crude oil pipeline 25 is opened, the front end piston 173 in the fourth casing 171 on the 7 crude oil pipelines 25 except the No. 3 pipeline is closed, the piston 173 on the gas outlet 174 in the last No. 8 crude oil pipeline 25 is opened, the viscosity-reducing and anti-wax agent is mixed with oil in the fourth casing 171 along the first crude oil pipeline 8, the piston 173 on the gas outlet 174 in the last No. 8 crude oil pipeline 25 is closed, the piston 173 on the gas outlet 174 on the last crude oil pipeline 25 is opened to prevent gas in the closed pipeline, so that the viscosity-reducing and anti-wax agent cannot enter the crude oil pipeline 25, and simultaneously the associated gas in the gas collection tank 11 is pressurized and then enters the first crude oil pipeline 8 through the gas pipe 10, the mixed petroleum and the viscosity-reducing and wax-preventing medicament are pushed into the bottom of a crude oil pipeline 25 together, so that the medicine property of the viscosity-reducing and wax-preventing medicament is best exerted;

when a detergent needs to be added, a pipe wall thickness detection sensor 19 positioned on the crude oil pipeline 25 detects the thickness of the inner wall of each crude oil pipeline 25, the pipe wall thickness value detected on each crude oil pipeline 25 is marked as hi, the pipe length value is marked as Ci, the petroleum pipelines in the oil extraction well group are marked as i, and i is a natural number greater than 1;

marking the thickness data of the petroleum pipeline pipe wall as a standard petroleum pipeline thickness threshold when leaving the factory, setting the thickness data as a reference number H, then storing the numerical value of H into a data acquisition and processing module, comparing the standard petroleum pipeline thickness threshold H set in the data acquisition and processing module with a pipe wall thickness value hi detected on a crude oil pipeline 25 with the same pipe length value Ci, and comparing the numerical values of H and hi;

when hi is greater than H and the numerical value is greater than 8mm, the data acquisition and processing module judges that the dirt on the pipe wall is abnormal, a pipe wall thickness control signal is generated, the data acquisition and processing module transmits the generated pipe wall thickness control signal to the element control module, the element control module controls a piston 173 at the front end of a corresponding fourth shell 171 to be opened, an air outlet 174 at the top of the fourth shell 171 to be opened and a second plug valve 18 to be opened, meanwhile, a worker knows that a descaling agent needs to be added into the pipeline of the oil well group through a control panel 3 and turns the fourth plug valve 162 to the highest position, the descaling agent in the second shell 151 is contacted with the oil in the crude oil pipeline 25 through a medicine inlet 166 on a blocking block 164, the blocking block 164 moves to the highest position of the third shell 161 from a placing groove at the moment, the medicine adding of the pipeline 167 is fixed in the oil well group, and simultaneously, the gas collection tank 11 enters the oil associated gas into a second medicine guide pipe 9 along a gas pipe 10, pushing the petroleum and scale remover mixture together into the bottom of the crude oil pipeline 25;

when H is larger than hi and the numerical value is smaller than 8mm, a warning signal is generated, the data acquisition and processing module transmits the warning signal and the information of the pipeline corresponding to the number i to the control panel 3, and a display screen on the control panel 3 flickers a yellow warning lamp corresponding to the number i, so that a worker is informed that the pipeline corresponding to the number i is worn;

when H > hi, and numerical value is when being greater than 8mm, generate alarm signal, data acquisition and processing module passes alarm signal to component control module, all pistons 173 on component control module control fourth casing 171 are closed, data acquisition and processing module sends alarm signal on corresponding pipeline i for control panel 3 simultaneously, and the information transmission that will change pipeline i through the display screen on control panel 3 gives the staff, the information that I No. pipeline changed is sent to central control room together simultaneously, central control room adds and dispatches the personnel and inspects and salvagees No. i pipeline.

When the two medicaments are mixed with petroleum, when crude oil associated gas in the gas collecting tank 11 is pushed into the medicine guide pipe, the ball valves 12 on the first medicine guide pipe 8 and the second medicine guide pipe 9 are in a closed state, so that the petroleum associated gas is prevented from being sprayed out of the thickening agent medicine box 4 and the scale remover medicine box 5;

waiting for the exertion of the drug effects of the two drugs, the thickness of the pipe wall of the crude oil pipeline 25 to which the descaling drug is added is detected by the pipe wall thickness detection sensor 19, the oil flow rate of the crude oil pipeline 25 to which the thickening and paraffin control drug is added is detected by the fluid flow rate detection sensor 23, and the oil flow rate is sent to the central control room through the data acquisition and processing module, and the pipeline information after the drug addition is recorded through long-time observation of the central control room, so that the later-period centralized maintenance of the crude oil pipeline 25 of the oil production well group is facilitated.

The working process of the invention is as follows:

the worker needs to add different functions and forms of agents into the thickening agent reducing agent box 4 and the scale remover box 5 in the first box body 1, the power mechanism in the chute 610 drives the rotary table 603 on the mixing mechanism 6 to rotate, the first connecting rod 604 on the rotary table 603 drives the second connecting rod 605 to move up and down in the chute 610, when the first connecting rod 604 on the rotary table 603 moves to the highest position, the second connecting rod 605 lifts the blocking ball 22, the push plate 606 in the chute 610 is flush with the agent flowing port 608, the thickening wax-proof agent and the scale remover flow from the agent flowing port 608 to the agent receiving vessel 609, after the scale remover is diluted with water, the worker simultaneously opens the ball valve 12 and the first plug valve 13 on the second medicine guide pipe 9, the scale remover enters the second shell 151 in the medicine discharging mechanism 15 along the second medicine guide pipe 9, and because the fourth plug valve 162 in the liquid inlet and outlet control mechanism 16 is at the bottommost, causing the second threaded rod 163 in the third casing 161 to drive the blocking block 164 to block the pipeline path of the second drug guide tube 9, so that the descaling agent stays in the second casing 151;

the viscosity-reducing and wax-preventing agent is arranged in the agent receiving vessel 609, after the preparation of the two agents is finished, a worker controls a data acquisition processing module on the electric control valve mechanism 17 through a button on a control panel 3 on the surface of the box door 2, the data acquisition processing module sends the opening information of the third plug valve 20, the pistons 173 in front of and behind the fourth shell 171 and the second plug valve 18 to an element control module in the second box body 24, the element control module opens each valve and each piston 173 through a lead and an adjusting device, meanwhile, a display screen on the control mechanism can synchronously know the opening and closing state of each valve of each pipeline, petroleum associated gas enters the second agent guiding pipe 9 through the crude oil pipeline 25, the petroleum associated gas reaches the liquid inlet and outlet control mechanism 16 through the second plug valve 18, at the moment, the blocking block 164 in the liquid inlet and outlet control mechanism 16 is in a sealing state, and the worker can use the pressure value displayed on the pressure detector 14, knowing the pressure value in the pipeline between the crude oil pipeline 25 and the third shell 161, when the pressure value on the pressure detector 14 reaches the alarm value, the buzzer on the pressure detector 14 gives an alarm sound to remind the operator to rotate the fourth plug valve 162 on the third shell 161, when the fourth plug valve 162 rotates 3 circles, the block 164 in the third shell 161 returns to the middle position, at this time, the petroleum associated gas in the second medicine guide pipe 9 is communicated with the diaphragm pipe 157 in the second shell 151 through the vent 165 on the block 164, the associated gas enters the gas collection tank 11 along the diaphragm pipe 157, after the associated gas in the petroleum pipeline is exhausted, the petroleum begins to enter the crude oil pipeline 25, the pipe wall thickness detection sensor 19 and the fluid flow rate detection sensor 23 begin to detect the petroleum flow rate in each crude oil pipeline 25 and the pipeline wall thickness of the crude oil pipeline 25, the acquired data are transmitted to the data acquisition and processing module, when the oil reaches the position of the piston 173 at the front end of the fourth shell 171, the piston 173, which is positioned at the front end of the fourth shell 171 and is in contact with the crude oil pipeline 25, is closed, so that the oil is positioned in the crude oil pipeline 25 and cannot enter the first medicine guide pipe 8 and the second medicine guide pipe 9, at the moment, the information processed by the data acquisition and processing module is waited, and meanwhile, the fourth plug valve 162 on the third shell 161 rotates to the bottommost part;

waiting for information acquisition and processing results:

if the oil flow rate in the pipeline is abnormal, the data acquisition processing module sends a control signal to the element control module and the control panel 3, the element control module controls the pistons 173 on the left side, the right side and the front end of the fourth shell 171 to be opened, so that the contact between the viscosity-reducing wax-proof medicament and the oil is controlled, a display screen on the control panel 3 transmits the pipeline information added with the viscosity-reducing wax-proof medicament to a worker, and the pipeline information comprises the serial number of the pipeline, the flow rate of the oil in the pipeline and a change curve of the oil flow rate in the oil pipeline added with the viscosity-reducing wax-proof medicament within 0-10 min;

if the data acquisition and processing module determines that the dirt on the pipe wall is abnormal, the data acquisition and processing module transmits the generated control signal to the element control module, the element control module controls the piston 173 at the front end of the fourth shell 171 to be opened, the air outlet 174 at the top of the fourth shell 171 to be opened and the second plug valve 18 to be opened correspondingly, meanwhile, the staff knows that the descaling agent needs to be added into the pipeline of the oil well group through the control panel 3 and turns the fourth plug valve 162 to the highest position, the descaling agent in the second shell 151 contacts with the petroleum in the crude oil pipeline 25 through the chemical inlet 166 on the blocking block 164, at the moment, the blocking block 164 moves to the highest position of the third shell 161 from the placing groove 167 to complete the chemical adding of the fixed pipeline in the oil well group, meanwhile, the gas collection tank 11 enters the petroleum associated gas into the second medicine guide pipe 9 along the gas pipe 10, and pushes the mixture of the petroleum and the descaling agent to the bottom of the crude oil pipeline 25;

meanwhile, the data acquisition and processing module transmits the wall thickness information of the petroleum pipeline in the crude oil pipeline 25 after the medicament is added and the flow velocity information of the petroleum in the petroleum pipeline to a central control room for centralized management.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a charge device for oil field oil recovery well group, includes first box (1), chamber door (2), control panel (3), falls thickener medicine box (4), scale remover medicine box (5), water pipe (7), ball valve (12), pressure detector (14), tube wall thickness detection sensor (19), fluid flow velocity detection sensor (23), second box (24) and crude oil pipeline (25), one side inner wall of first box (1) is fixed with through the bolt symmetry and falls thickener medicine box (4) and scale remover medicine box (5), its characterized in that: the bottom parts of the thickening agent reducing medicine box (4) and the scale remover medicine box (5) are communicated with a mixing mechanism (6), the mixing mechanism (6) comprises a first shell (601) and a partition plate (602), wherein the partition plate (602) divides the first shell (601) into two halves, a first medicine guide pipe (8) is arranged at the bottom of the first shell (601) positioned at one side of the thickening agent medicine box (4), a second medicine guide pipe (9) is arranged at the bottom of the first shell (601) at one side of the scale remover medicine box (5), a gas collecting tank (11) is fixed on the inner wall of the bottom of the first box body (1) through bolts, two air pipes (10) are arranged on the air collecting tank (11), one end of one air pipe (10) is communicated with the first medicine guide pipe (8), and one end of the other air pipe (10) is communicated with the second medicine guide pipe (9), a first plug valve (13) is arranged at one end of the second medicine guide pipe (9) far away from the air pipe (10);

one end of the second medicine guide pipe (9) is connected with a medicine discharge mechanism (15), the medicine discharge mechanism (15) comprises a second shell (151), a pressure detector (14) is installed on the second medicine guide pipe (9) between the first plug valve (13) and the second shell (151), the other end of the second medicine guide pipe (9) installed on the medicine discharge mechanism (15) is communicated with a liquid inlet and outlet control mechanism (16), the liquid inlet and outlet control mechanism (16) comprises a third shell (161), the other end of the second medicine guide pipe (9) on the third shell (161) is uniformly provided with a second plug valve (18), the second plug valve is positioned on the second plug valve (18) and is communicated with a crude oil pipeline (25), the crude oil pipeline (25) is communicated with an electric control valve mechanism (17), the valve electric control mechanism (17) comprises a fourth shell (171), a connecting groove (172), a piston (173) and an air outlet (174), the fourth shell (171) is provided with an air outlet (174), the fourth shell (171) is internally provided with a connecting groove (172), a piston (173) is arranged in the connecting groove (172), the other end of the crude oil pipeline (25) on the fourth shell (171) is communicated with a pipe wall thickness detection sensor (19), and the fourth shell (171) is fixed with a fluid flow velocity detection sensor (23) through a bolt;

the electric control valve mechanism (17) further comprises a data acquisition processing module and a signal transceiving module;

the data acquisition processing module is used for collecting the numerical value of the pipe wall thickness of the crude oil pipeline (25) detected by the pipe wall thickness detection sensor (19) and the numerical value of the oil flow velocity in the crude oil pipeline (25) detected by the fluid flow velocity detection sensor (23), comparing the numerical values with a preset value in the processing module, processing the compared numerical values and sending the processed numerical values to the signal transceiver module, finally collecting and amplifying signals through the signal transceiver module, and sending the processed signals to the control panel (3) and the second box body (24) respectively.

2. The dosing device for an oilfield production well group according to claim 1, wherein: the mixing mechanism (6) further comprises a rotating disc (603), a sliding groove (610), a medicine flowing port (608) and a medicine receiving vessel (609), the sliding groove (610) is formed in the first shell (601), and the inner wall of one side of the sliding chute (610) is movably connected with a turntable (603) through a bearing, one side of the turntable (603) is rotatably connected with a first connecting rod (604) through a bearing, and one end of the first connecting rod (604) is rotatably connected with a second connecting rod (605) through a bearing, a push plate (606) is arranged on the second connecting rod (605) and positioned in the sliding groove (610), and a rubber block (607) is fixed on the top of the push plate (606) through adhesion, the inner wall of the bottom of the first shell (601) is provided with a medicine receiving vessel (609), and the chute (610) is provided with a medicine flowing port (608) for communicating the medicine receiving vessel (609) with the chute (610).

3. The dosing device for an oilfield production well group according to claim 2, wherein: one end of the water pipe (7) penetrates through the first shell (601) and the partition plate (602) respectively and extends to two medicine receiving vessels (609), a spray head (21) is installed on the water pipe (7) in the medicine receiving vessels (609), a blocking ball (22) is installed in the thickening agent reducing medicine box (4) and the scale remover medicine box (5), and the bottoms of the thickening agent reducing medicine box (4) and the scale remover medicine box (5) are communicated with the sliding grooves (610) respectively.

4. The dosing device for an oilfield production well group according to claim 1, wherein: arrange medicine mechanism (15) and still include rocking wheel (152), first threaded rod (153), ejector pad (154) and diaphragm, the bilateral symmetry of second casing (151) is installed and is rocked wheel (152), and is located the one end of rocking wheel (152) and is connected with first threaded rod (153) in second casing (151), sliding connection has ejector pad (154) in second casing (151), and is located one side of ejector pad (154) and installs arc rubber slab (156), spring (155) are installed with ejector pad (154) opposite face in arc rubber slab (156), the diaphragm is installed to the opposite face that just is located two arc rubber slabs (156) in second casing (151).

5. The dosing device for an oilfield production well group according to claim 1, wherein: business turn over liquid control mechanism (16) still includes second threaded rod (163), standing groove (167), fourth plug valve (162), sprue (164), air vent (165) and leads to medicine mouth (166), install fourth plug valve (162) on third casing (161), and the one end that is located fourth plug valve (162) and is located third casing (161) is fixed with second threaded rod (163) through spot welding, the bottom of second threaded rod (163) is fixed with sprue (164) through spot welding, standing groove (167) have been seted up to the bottom inner wall of third casing (161), air vent (165) have been seted up on sprue (164), and the bottom that is located air vent (165) has seted up logical medicine mouth (166).

6. The dosing device for an oilfield production well group according to claim 4, wherein: the first medicine guide pipe (8) is communicated with a fourth shell (171), electric control valves are installed at two ends of the fourth shell (171), a third plug valve (20) is uniformly installed on a crude oil pipeline (25), a ball valve (12) is installed on one section, located in the first box body (1), of the first medicine guide pipe (8) and one section, located in the second box body (9), of the second medicine guide pipe (8), and an element control module is arranged in the second box body (24);

the element control module receives the electric signal amplified by the signal transceiving module, and the element control module after receiving the signal is connected with and controls the third plug valve (20), a piston (173) on the fourth shell (171) and the second plug valve (18) to be opened and closed through a lead.

7. The dosing method of a dosing device for an oil field production well group according to claim 1, characterized in that: the specific process is as follows:

s1: firstly, a blocking block (164) in a liquid inlet and outlet control mechanism (16) is manually screwed down through a fourth plug valve (162), so that a second medicine guide pipe (9) and a crude oil pipeline (25) are in a separated state, descaling agent powder is placed in a descaling agent medicine box (5) in advance, the dosage of the descaling agent entering the second medicine guide pipe (9) is controlled through the rotation times of a rotary disc (603), the rotary disc (603) rotates for a circle, the dosage of the descaling agent powder entering a medicine receiving vessel (609) is 8-15 g, the number of rotating circles of the rotary disc (603) can be directly controlled through a control panel (3), when the dosage of the descaling agent in the medicine receiving vessel (609) reaches a preset value, water flows through a water pipe (7), the water flows out through a spray head (21), the descaling agent is dissolved, and the dissolved descaling agent enters a second shell (151) through the second medicine guide pipe (9);

s2: at the moment, a worker manually operates the control panel (3) to open the third plug valve (20), the front piston (173) and the rear piston (18) on the fourth shell (171), and then manually moves the fourth plug valve (162) to the central position, so that the vent hole (165) is clamped with the pipe orifice of the diaphragm pipe (157), gas comes out of the pipeline at the front end of the crude oil pipeline (25) due to associated gas mixed in the crude oil pipeline (25), and after the gas is exhausted, the petroleum flows out, the associated gas of the petroleum enters the gas collecting tank (11) through the crude oil pipeline (25), the second medicine guide pipe (9) and the gas pipe (10), when the petroleum starts flowing out from the crude oil pipeline (25), and flows to the front end of the valve electric control mechanism (17), the piston (173) on the fourth shell (171) blocks the fourth shell (171), meanwhile, the fluid flow velocity detection sensor (23) measures the oil flow velocity in the crude oil pipeline (25);

marking the flow speed data acquired by the fluid flow speed detection sensor (23) on each pipeline as ai, marking the petroleum pipeline as i, wherein i is a natural number greater than 1, and marking the flow speed data acquired by the fluid flow speed detection sensor (23) on each pipeline as ai values to be stored in the data acquisition and processing module;

dividing a crude oil pipeline (25) of an oil extraction well group into o sub-pipelines, wherein o is a natural number more than 1;

comparing the flow speed data ai acquired by the fluid flow speed detection sensor (23) on the o sub-pipelines with the conventional oil flow speed threshold value A in a data acquisition and processing module to obtain:

if the flow speed difference threshold value between A and ai is more than 0.15m/s, judging that the flow speed of petroleum in the ai pipeline is abnormal, generating a thickening-reducing and paraffin-preventing control signal, sending the thickening-reducing and paraffin-preventing control signal to an element control module and a control panel (3) by a data acquisition and processing module, controlling pistons (173) on the left side, the right side and the front end of a fourth shell (171) to be opened by the element control module, controlling the thickening-reducing and paraffin-preventing medicaments to be in contact with the petroleum, transmitting pipeline information added with the thickening-reducing and paraffin-preventing medicaments to workers by a display screen on the control panel (3), wherein the pipeline information comprises the serial number of the pipeline, the flow speed of the petroleum in the pipeline and a change curve of the flow speed of the petroleum in the petroleum pipeline added with the thickening-reducing and paraffin-preventing medicaments within 0-10 min;

s3: the pipe wall thickness detection sensor (19) positioned on the crude oil pipeline (25) detects the thickness of the inner wall of each crude oil pipeline (25), the pipe wall thickness value detected on each crude oil pipeline (25) is marked as hi, and the numerical value hi is transmitted to the data acquisition and processing module;

labeling the tube length value as Ci;

comparing a standard petroleum pipeline thickness threshold value H set in the data acquisition processing module with a pipe wall thickness value hi detected on a crude oil pipeline (25) with the same pipe length value Ci, and comparing the values of H and hi through the data acquisition processing module to obtain:

when hi is greater than H and the numerical value is greater than 8mm, the data acquisition and processing module judges that the dirt on the pipe wall is abnormal, a pipe wall thickness control signal is generated, the data acquisition and processing module transmits the generated pipe wall thickness control signal to the element control module, the element control module controls a piston (173) at the front end of a corresponding fourth shell (171) to be opened, an air outlet (174) at the top of the fourth shell (171) to be opened and a second plug valve (18) to be opened, meanwhile, a worker knows that the descaling agent needs to be added into the pipeline of the oil well group through a control panel (3) and turns the fourth plug valve (162) to the highest position, the descaling agent in the second shell (151) is contacted with the oil in the crude oil pipeline (25), and the dosing of the fixed pipeline in the oil well group is completed;

when H is larger than hi and the numerical value is smaller than 8mm, a warning signal is generated, the data acquisition processing module transmits the warning signal and the information of the pipeline corresponding to the number i to the control panel (3), and a display screen on the control panel (3) flickers a yellow warning lamp corresponding to the number i, so that a worker is informed that the pipeline corresponding to the number i is worn;

when H > hi, and numerical value when being greater than 8mm, generate alarm signal, data acquisition processing module passes alarm signal to component control module, all pistons (173) on component control module control fourth casing (171) are closed, data acquisition processing module sends alarm signal on corresponding pipeline i for control panel (3) simultaneously, and the display screen through on control panel (3) will change the information transmission of pipeline i for the staff, the information of changing the pipeline is sent for central control room together simultaneously, central control room adds and dispatches the personnel and inspects and salvagees No. i pipeline.