CN111140219B - Single well water mixing system and method for metering room - Google Patents
Single well water mixing system and method for metering room Download PDFInfo
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- CN111140219B CN111140219B CN201911022302.8A CN201911022302A CN111140219B CN 111140219 B CN111140219 B CN 111140219B CN 201911022302 A CN201911022302 A CN 201911022302A CN 111140219 B CN111140219 B CN 111140219B
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- 238000002156 mixing Methods 0.000 title claims abstract description 116
- 239000002349 well water Substances 0.000 title claims abstract description 65
- 235000020681 well water Nutrition 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000007363 regulatory process Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 105
- 239000010779 crude oil Substances 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
- E21B47/00—Survey of 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Fluid Mechanics (AREA)
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention belongs to the technical field of oil extraction, and discloses a single well water mixing system between metering, which comprises the following components: waterway pipeline mechanism, oil circuit pipeline mechanism, valve operating device, well head valves and control system. The invention improves the water mixing precision of a single well, automatically completes measurement, eliminates errors of subjective measurement of oil production workers and ensures the accuracy of data; meanwhile, the measuring staff is released from the boring work, so that unattended operation between metering rooms is convenient to realize; the equipment and facilities in the existing metering room are not changed, reconstruction is not needed, the investment is small, and the implementation is convenient; the discrete analog instrument data in the existing metering room are collected uniformly through the control system, so that a foundation is laid for realizing the oil extraction digitization.
Description
Technical Field
The invention belongs to the technical field of oil extraction, relates to a single well water mixing technology in a metering room, and particularly relates to a single well water mixing system in a metering room and a water mixing method.
Background
At present, in the exploitation and production of petroleum, pipelines of a plurality of oil wells are usually collected into a metering (valve bank), pipelines of a single (oil) well usually comprise an oil return (crude oil extraction) pipeline and a water mixing pipeline, wherein the water mixing pipeline guides water mixing to a wellhead of the single well through a single well water mixing valve for collecting and transporting crude oil and heat tracing, paraffin in the crude oil is prevented from separating out, and the mixed crude oil and single well oil return flow back into the metering (valve bank) through an oil return pipe and are collected into an oil return collecting pipe to flow to a joint station; meanwhile, the water mixing pipeline can also guide hot washed high-pressure hot water into the wellhead sleeve through switching and conducting the single-well hot washing valve, so that single (annular) well hot washing operation is implemented.
The oil extraction and water mixing process parameters are main process parameters in oil extraction production, and the water mixing temperature is ensured to be within a certain range, wherein the control of the water injection and mixing temperature is a key factor for ensuring the normal flow of crude oil in the oil collecting process, the water mixing temperature is too high, the energy consumption is too high, the water mixing temperature is low, the normal flow of the crude oil cannot be ensured, and meanwhile, the damage such as wax knot and the like to an oil well can be caused. Therefore, the control of the water mixing temperature is an important technological parameter requirement for oil extraction production under the conditions of energy conservation and emission reduction.
The current water mixing temperature control is generally carried out in a metering room by adjusting a single well water mixing valve and combining other related instruments such as oil return temperature, wellhead pressure and the like.
The oil return temperature is normally controlled by adjusting the opening of the single well water mixing valve and the parameters such as the oil return temperature, pressure and flow of the corresponding single well, the process requirement is usually that the oil return temperature is measured once every four hours, the single well water mixing valve is usually adjusted in a metering room, the single well water mixing valve is manually completed by an operator in the metering room, the metering is usually only operated by people in daytime, other times are in an unmanned working state, the oil return temperature cannot be dynamically controlled, the normal oil recovery is ensured, the oil return temperature is normally controlled to be higher, the control is inaccurate, the excessively high irrelevant energy consumption is caused, and the process is not completed by adding automatic control due to the fact that the whole oil recovery process and equipment are standardized, so a process and equipment solution for realizing the automatic completion of the water mixing and oil return temperature control under the condition that the existing process equipment is not changed is urgently needed, and the water recovery yield and the condition are ensured.
The existing metering (valve group) room is generally built for a long time, pipelines and equipment in the metering (valve group) room are generally analog meters and manually operated valves, and because of the working property of the metering (valve group) room, the large-scale transformation into automatic meters and automatic actuators is difficult, so that the single well water mixing work in the metering (valve group) room can only be completed manually by oil production workers.
Disclosure of Invention
Object of the invention
The purpose of the invention is that: based on the actual situation that manual watering operation cannot be automatically completed in the prior art, the single-well watering system and the watering method for the metering room are provided, the original oil extraction process method and equipment are not changed, the measurement of watering oil return temperature and pressure is automatically completed, an automatic valve operating device and an intelligent camera matched with the automatic valve operating device are adopted to respectively complete the operation of the single-well watering valve and the reading of the oil return temperature watering pressure parameters, and the accurate control of watering process parameters is completed.
(II) technical scheme
In order to solve the above technical problems, the present invention provides a single well water mixing system for metering room, comprising: waterway pipeline mechanism, oil way pipeline mechanism, valve operating device 8, wellhead valve group and control system 10; the waterway pipeline mechanism comprises a hot washing water inlet pipeline, a water mixing water inlet pipeline and a plurality of single-well water mixing pipelines, one end of each single-well water mixing pipeline is connected with the hot washing water inlet pipeline through a single-well hot washing valve 5, the water mixing water inlet pipeline is connected through a single-well water mixing valve 6, and the other end of each single-well water mixing pipeline is led to a corresponding wellhead valve group; the oil way pipeline mechanism comprises a pipeline of a pipeline separator, a pipeline of an oil return collecting pipe and a plurality of Shan Jinglai oil pipelines, wherein the pipeline of the pipeline separator is connected with the separator, one end of the oil return collecting pipe is connected with the separator, and the other end of the oil return collecting pipe is connected with the oil storage container; one end of each Shan Jinglai oil pipeline is connected with a corresponding wellhead valve group, and the other end of each Shan Jinglai oil pipeline is connected with a separator pipeline through a single-well separator inlet valve and is connected with an oil return collecting pipe through a single-well oil return valve; the valve operating device 8 is used for operating all the single-well hot washing valve 5, the single-well water mixing valve 6, the inlet valve of the single-well separator and the single-well oil return valve, controlling the opening and closing or the adjustment of the valves, and realizing the sequential action execution of the valves of each flow; the control system 10 transmits a control command to the valve operating device 8 to control the operation of the valve operating device 8; the valve operating device 8 is a movable valve operating device with a camera, when the valve operating device 8 works, before moving to a valve to be operated, the camera reads the reading of an instrument on the valve and transmits the result to the control system 10, and the control system 10 adjusts and controls the operation of the valve operating device 8 according to the reading of the instrument and the control requirement.
Wherein each path of Shan Jinglai oil pipeline, an inlet valve of a single well separator and an oil return valve of the single well separator connected with the Shan Jinglai oil pipeline form a path of oil path branch, and a plurality of paths of oil path branches are arranged in parallel and work independently; in each oil path branch, the inlet valve of the single well separator and the single well oil return valve are opened alternatively.
Wherein, each channel of the single well water mixing pipeline, the single well hot washing valve 5 connected with the single well water mixing pipeline and the single well water mixing valve 6 form a channel waterway branch, and the multi-channel waterway branches are arranged in parallel and work independently; in each waterway branch, the single-well hot washing valve 5 and the single-well water mixing valve 6 are opened alternatively.
The water mixing incoming pipeline is provided with a water mixing incoming pressure gauge 3 and a water mixing incoming temperature gauge 4, and the pressure and the temperature of the water mixing incoming water are measured in real time.
And an oil return thermometer 7 is arranged on each path of Shan Jinglai oil pipeline and is used for measuring the temperature of incoming oil of each wellhead in real time.
And each single well water mixing pipeline and the corresponding well head connecting pipeline are provided with well head water mixing valves 2, and the valve operating device 8 controls the opening, closing and flow regulation of the well head water mixing valves 2.
And a wellhead pressure gauge 1 is arranged on a connecting pipeline between each Shan Jinglai oil pipeline and a corresponding wellhead and is used for measuring the pressure of wellhead oil return.
Wherein, the valve operating device 8 and the control system 10 are connected by a cable 9 to transmit signals.
The invention also provides a single well water mixing method between metering, which comprises the following steps:
s1: the system is started in a timing and circulating way;
p1: the control system compares the room temperature of the measuring room with the preset standard operation temperature, and when the room temperature of the measuring room is smaller than the standard operation temperature, the control system shifts to S43; when the room temperature of the metering room is more than or equal to the standard operation temperature, transferring to P2;
p2: the control system compares the wellhead oil pressure with a preset standard operating pressure, and when the wellhead oil pressure is greater than the standard operating pressure, the control system shifts to S6; when the wellhead oil pressure is less than or equal to the standard operating pressure, turning to P3;
p3: the control system compares the water doping temperature with a preset standard operation temperature, and when the water doping temperature is smaller than the standard operation temperature, the control system shifts to S6; when the water doping temperature is greater than or equal to the standard operation temperature, switching to P4;
p4: the control system compares the watering pressure with the standard operating pressure, and when the watering pressure is smaller than the standard operating pressure, the control system shifts to S6; when the water mixing pressure is greater than or equal to the standard operating pressure, switching to S2;
s2: starting and resetting a circulation counter which is arranged in the control system and used for recording the adjustment times of the watering valve;
s3: the valve operating device reads and records oil return temperature data and time and transmits the oil return temperature data and time to the control system;
p5: the control system compares the oil return temperature with a preset standard temperature lower limit, the oil return temperature is smaller than the standard temperature lower limit, and the process goes to S43; the oil return temperature is equal to the lower limit of the standard temperature, and S1 is carried out; the oil return temperature is higher than the lower limit of the standard temperature, and the process is shifted to P6;
p6: the control system performs convergence judgment on the difference delta t between the oil return temperature and the standard temperature lower limit, and when the oil return temperature is lower than the standard temperature lower limit, the control system goes to S43; convergence shifts to S41; the oil return temperature is higher than the upper limit of the standard temperature, and the process goes to S42;
s41: resetting the circulation counter, resetting the adjustment counter A and the adjustment counter B at the same time, and returning to S1; the regulating counter A is used for recording the regulating and reducing times of the watering valve, the continuous reducing times are a ', and when the continuous regulating times are greater than a', the regulating process is judged to be non-convergence; the adjusting counter B is used for recording the adjusting and enlarging times of the watering valve, the continuously enlarging times are B ', and when the continuously adjusting times are greater than B', the adjusting process is judged to be non-convergence; after the convergence is judged once, the circulation counter, the regulating counter A and the regulating counter B are required to be reset, and the circulation count is re-carried out;
s42: the opening degree of a single well water mixing valve is adjusted to be small, and the S51 is turned to;
s43: the opening degree of a single well water mixing valve is increased, and the process is turned to S52;
s51: adjust counter a+1 and turn to P71;
s52: adjusting the counter B+1 and turning to P72;
p71: the count value of the regulating counter A is compared with the preset convergence number a, if the count value is equal to the convergence number a, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
p72: the count value of the regulating counter B is compared with the preset convergence number B, if the count value is equal to the convergence number B, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
s6: recording abnormal conditions into an equipment log;
s7: alarming and outputting;
s8: and (5) stopping.
(III) beneficial effects
The single well water mixing system between metering provided by the technical scheme has the following advantages:
1. the water mixing precision of a single well is improved;
2. the measurement is automatically completed, errors of subjective measurement of oil extraction workers are eliminated, and the accuracy of data is ensured; meanwhile, the measuring staff is released from the boring work, so that unattended operation between metering rooms is convenient to realize;
3. the equipment and facilities in the existing metering room are not changed, reconstruction is not needed, the investment is small, and the implementation is convenient;
4. discrete analog instrument data in the existing metering (valve group) is collected uniformly through a control system, and a foundation is laid for realizing oil extraction digitization.
Drawings
FIG. 1 is a schematic diagram of a single well water-mixing system between metering chambers according to an embodiment of the present invention.
FIG. 2 is a flow chart illustrating the operation of a single well water blending system between metering chambers according to an embodiment of the present invention.
In FIG. 1, a 1-wellhead pressure gauge, a 2-wellhead water mixing valve, a 3-water mixing incoming water pressure gauge, a 4-water mixing incoming water thermometer, a 5-single well hot washing valve, a 6-single well water mixing valve, a 7-oil return thermometer, an 8-valve operating device, a 9-cable and a 10-control system are shown.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
Referring to FIG. 1, the single well watering system between metering chambers of the present invention comprises: waterway pipeline mechanism, oil way pipeline mechanism, valve operating device 8, wellhead valve group and control system 10; the waterway pipeline mechanism comprises a hot washing water inlet pipeline, a water mixing water inlet pipeline and a plurality of single-well water mixing pipelines, one end of each single-well water mixing pipeline is connected with the hot washing water inlet pipeline through a single-well hot washing valve 5, the water mixing water inlet pipeline is connected through a single-well water mixing valve 6, and the other end of each single-well water mixing pipeline is led to a corresponding wellhead valve group; the oil way pipeline mechanism comprises a pipeline of a pipeline separator, a pipeline of an oil return collecting pipe and a plurality of Shan Jinglai oil pipelines, wherein the pipeline of the pipeline separator is connected with the separator, one end of the oil return collecting pipe is connected with the separator, and the other end of the oil return collecting pipe is connected with the oil storage container; one end of each Shan Jinglai oil pipeline is connected with a corresponding wellhead valve group, and the other end of each Shan Jinglai oil pipeline is connected with a separator pipeline through a single-well separator inlet valve and is connected with an oil return collecting pipe through a single-well oil return valve; the valve operating device 8 is used for operating all the single-well hot washing valve 5, the single-well water mixing valve 6, the inlet valve of the single-well separator and the single-well oil return valve, controlling the opening and closing or the adjustment of the valves, and realizing the sequential action execution of the valves of each flow; the control system 10 transmits a control command to the valve operating device 8 to control the operation of the valve operating device 8; the valve operating device 8 is a movable valve operating device with a camera, when the valve operating device 8 works, before moving to a valve to be operated, the camera reads the reading of an instrument on the valve and transmits the result to the control system 10, and the control system 10 adjusts and controls the operation of the valve operating device 8 according to the reading of the instrument and the control requirement.
Each Shan Jinglai oil pipeline, an inlet valve of the single-well separator and an oil return valve of the single-well separator connected with the oil pipeline form a path of oil circuit branch, and a plurality of paths of oil circuit branch are arranged in parallel and work independently without mutual influence. In each oil path branch, the inlet valve of the single well separator and the single well oil return valve are opened alternatively, and cannot be opened simultaneously.
Each single-well water mixing pipeline, the single-well hot washing valve 5 connected with the single-well water mixing pipeline and the single-well water mixing valve 6 form a water path branch, and multiple water paths branches are arranged in parallel and work independently without mutual influence. In each waterway branch, the single-well hot washing valve 5 and the single-well water mixing valve 6 are opened alternatively and cannot be opened simultaneously.
The water mixing incoming pipeline is used for providing low-temperature low-pressure water, water supply with the temperature of 28-40 ℃ and the pressure of 1-2Mpa is usually selected, the low-temperature low-pressure water is used for melting oil pumped out of a well, and in order to accurately know the parameters of the low-temperature low-pressure water, a water mixing incoming pressure gauge 3 and a water mixing incoming temperature gauge 4 are arranged on the water mixing incoming pipeline, and the pressure and the temperature of the water mixing incoming are measured in real time; the hot washing water supply pipeline is used for providing high-temperature high-pressure water, water supply with the temperature of 70-75 ℃ and the pressure of 2-4Mpa is usually selected, the high-temperature high-pressure water is used for hot washing when the oil in the well is weak and can not be extracted, and in order to accurately know the parameters of the high-temperature high-pressure water, an incoming water pressure gauge and an incoming water temperature gauge are arranged on the hot washing water supply pipeline, and the pressure and the temperature of the hot washing water are measured in real time.
An oil return thermometer 7 is arranged on each Shan Jinglai oil pipeline and is used for measuring the temperature of oil coming from each wellhead valve group in real time.
The well mouth water mixing valve 2 is arranged on the connecting pipeline of each single well water mixing pipeline and the corresponding well mouth valve group, the valve operating device 8 controls the opening, closing and flow adjustment of the well mouth water mixing valve 2, thereby realizing the fine adjustment of the water mixing amount leading to the well mouth valve group. The single well water mixing valve 6 is used for regulating water mixing flow in the metering room and is mainly used for a single well.
And a wellhead pressure gauge 1 is arranged on the connecting pipeline of each Shan Jinglai oil pipeline and the corresponding wellhead valve group and is used for measuring the pressure of wellhead oil return.
The valve operating device 8 and the control system 10 are connected by a cable 9, and signals are transmitted.
In this embodiment, the valve operating device 8 is an unattended automatic operating device, when the device works, the measuring room is required to be in a closed state, no personnel enter the measuring room, the device autonomously completes inspection and operation, when an irrelevant person enters the measuring room, the movable valve operating device is in a closed state, if and only after the person leaves the measuring room, the device can normally work, an anti-intrusion switch can be usually arranged on a door of the measuring room, when the door of the room is opened, the switch cuts off a safety circuit, after the door of the room is closed, an authorized person is required to restore the safety circuit, the system can work, the system can be used for detecting intrusion of the unauthorized person, and the movable valve operating device can also be used for preventing personal injury caused by intrusion of the valve operating device to the unauthorized person in work.
The movable valve operating device can acquire data in the metering room, such as oil return temperature and current valve state, and the operation of the valve is processed according to the flow by combining wellhead oil return pressure, current season and indoor and outdoor temperature.
After the valve operation is finished, the operation result is stored in a control system of the valve operation device, the measurement result is uploaded to a central control system for comparison of the result in the next operation, after a plurality of times, the movable valve operation device carries out the next inspection cycle, the inspection interval time is determined by main process parameters, the inspection interval time can be manually determined, the inspection time is usually less than two hours, the valve operation device is pushed to operate the valve, the water doping amount and the water doping temperature return of an oil well can be accurately controlled, thereby the utilization rate of energy sources is improved, meanwhile, the data inspected by the cycle can be stored in the control system, the data is collected and analyzed, in an unattended metering room, the operation of the valve is carried out by an automatic movable operation device, the inspection times are saved, the inspection time is improved, the abnormal situation of the oil well can be discovered earlier in time, the important significance is realized for safe production and energy saving, meanwhile, a large number of areas are in a remote area in the production and exploitation of crude oil, the adoption of the movable valve operation device can be greatly reduced, the cost of the movable valve operation device can be greatly reduced, the data can be collected by the movable operation device in the digital base and the digital base of the oil field, and the data can be input into a digital base and the digital base of the device for the important data collection device.
Referring to fig. 2, based on the single well water mixing system of the metering room, the single well water mixing method of the metering room of the embodiment includes the following steps, wherein the opening and closing operations of the valve follow the key points of opening and closing operation firstly, and the specific steps are as follows:
s1: the system is started in a timing and circulating way;
p1: the control system compares the room temperature of the measuring room with the preset standard operation temperature, and when the room temperature of the measuring room is smaller than the standard operation temperature, the control system shifts to S43; when the room temperature of the metering room is more than or equal to the standard operation temperature, transferring to P2;
p2: the control system compares the wellhead oil pressure with a preset standard operating pressure, and when the wellhead oil pressure is greater than the standard operating pressure, the control system shifts to S6; when the wellhead oil pressure is less than or equal to the standard operating pressure, turning to P3;
p3: the control system compares the water doping temperature with a preset standard operation temperature, and when the water doping temperature is smaller than the standard operation temperature, the control system shifts to S6; when the water doping temperature is greater than or equal to the standard operation temperature, switching to P4;
p4: the control system compares the watering pressure with the standard operating pressure, and when the watering pressure is smaller than the standard operating pressure, the control system shifts to S6; when the water mixing pressure is greater than or equal to the standard operating pressure, switching to S2;
s2: starting and resetting a circulation counter which is arranged in the control system and used for recording the adjustment times of the watering valve;
s3: the valve operating device reads and records oil return temperature data and time and transmits the oil return temperature data and time to the control system;
p5: the control system compares the oil return temperature with a preset standard temperature lower limit, the oil return temperature is smaller than the standard temperature lower limit, and the process goes to S43; the oil return temperature is equal to the lower limit of the standard temperature, and S1 is carried out; the oil return temperature is higher than the lower limit of the standard temperature, and the process is shifted to P6;
p6: the control system performs convergence judgment on the difference delta t between the oil return temperature and the standard temperature lower limit, and when the oil return temperature is lower than the standard temperature lower limit, the control system goes to S43; convergence shifts to S41; the oil return temperature is higher than the upper limit of the standard temperature, and the process goes to S42;
s41: resetting the circulation counter, resetting the adjustment counter A and the adjustment counter B at the same time, and returning to S1; the regulating counter A is used for recording the times of regulating and reducing the water mixing valve (closing the flow), the times of continuously regulating and reducing are a ', and when the times of continuously regulating are greater than a', the regulating process is judged to be non-convergence; the regulating counter B is used for recording the times of regulating and enlarging (opening large flow) the water mixing valve, the times of continuous enlargement are B ', and when the times of continuous regulation are greater than B', the regulating process is judged to be non-convergence; after the convergence is judged once, the circulation counter, the regulating counter A and the regulating counter B are required to be reset, and the circulation count is re-carried out;
s42: the opening degree of a single well water mixing valve is adjusted to be small, and the S51 is turned to;
s43: the opening degree of a single well water mixing valve is increased, and the process is turned to S52;
s51: adjust counter a+1 and turn to P71;
s52: adjusting the counter B+1 and turning to P72;
p71: the count value of the regulating counter A is compared with the preset convergence number a, if the count value is equal to the convergence number a, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
p72: the count value of the regulating counter B is compared with the preset convergence number B, if the count value is equal to the convergence number B, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
s6: recording abnormal conditions into an equipment log;
s7: alarming and outputting;
s8: and (5) stopping.
In step S41, the normal standard (oil return) temperature is within a temperature range, and the lower limit is the convergence determination condition: Δt is the difference between the oil return temperature and the lower limit of the standard temperature, and when Δt=0, it is determined to be convergent; delta t is more than 0, and the opening of the valve needs to be reduced; Δt <0, the valve opening needs to be increased.
Wherein the standard operating temperature, standard operating pressure, Δt, a, b, etc. are determined by the single well process parameters.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
1. A single well water mixing method in a metering room is characterized in that a single well water mixing system in the metering room is adopted for carrying out single well water mixing in the metering room; the single well watering system between metering includes: the device comprises a waterway pipeline mechanism, an oil circuit pipeline mechanism, a valve operating device (8), a wellhead valve group and a control system (10); the waterway pipeline mechanism comprises a hot washing water inlet pipeline, a water mixing water inlet pipeline and a plurality of single-well water mixing pipelines, one end of each single-well water mixing pipeline is connected with the hot washing water inlet pipeline through a single-well hot washing valve (5), the water mixing water inlet pipeline is connected through a single-well water mixing valve (6), and the other end of each single-well water mixing pipeline is led to a corresponding wellhead valve group; the oil way pipeline mechanism comprises a pipeline of a pipeline separator, a pipeline of an oil return collecting pipe and a plurality of Shan Jinglai oil pipelines, wherein the pipeline of the pipeline separator is connected with the separator, one end of the oil return collecting pipe is connected with the separator, and the other end of the oil return collecting pipe is connected with the oil storage container; one end of each Shan Jinglai oil pipeline is connected with a corresponding wellhead valve group, and the other end of each Shan Jinglai oil pipeline is connected with a separator pipeline through a single-well separator inlet valve and is connected with an oil return collecting pipe through a single-well oil return valve; the valve operating device (8) operates all the single-well hot washing valves (5), the single-well water mixing valve (6), the inlet valve of the single-well separator and the single-well oil return valve, controls the opening and closing or the adjustment of the valves, and realizes the sequential action execution of the valves of each flow; the control system (10) transmits a control instruction to the valve operating device (8) to control the operation of the valve operating device (8); the valve operating device (8) is a movable valve operating device with a camera, when the valve operating device (8) works, before moving to a valve to be operated, reading a meter on the valve through the camera and transmitting the result to the control system (10), and the control system (10) adjusts and controls the operation of the valve operating device (8) according to the meter reading and the control requirement;
the single well water mixing method between metering comprises the following steps:
s1: the system is started in a timing and circulating way;
p1: the control system compares the room temperature of the measuring room with the preset standard operation temperature, and when the room temperature of the measuring room is smaller than the standard operation temperature, the control system shifts to S43; when the room temperature of the metering room is more than or equal to the standard operation temperature, transferring to P2;
p2: the control system compares the wellhead oil pressure with a preset standard operating pressure, and when the wellhead oil pressure is greater than the standard operating pressure, the control system shifts to S6; when the wellhead oil pressure is less than or equal to the standard operating pressure, turning to P3;
p3: the control system compares the water doping temperature with a preset standard operation temperature, and when the water doping temperature is smaller than the standard operation temperature, the control system shifts to S6; when the water doping temperature is greater than or equal to the standard operation temperature, switching to P4;
p4: the control system compares the watering pressure with the standard operating pressure, and when the watering pressure is smaller than the standard operating pressure, the control system shifts to S6; when the water mixing pressure is greater than or equal to the standard operating pressure, switching to S2;
s2: starting and resetting a circulation counter which is arranged in the control system and used for recording the adjustment times of the watering valve;
s3: the valve operating device reads and records oil return temperature data and time and transmits the oil return temperature data and time to the control system;
p5: the control system compares the oil return temperature with a preset standard temperature lower limit, the oil return temperature is smaller than the standard temperature lower limit, and the process goes to S43; the oil return temperature is equal to the lower limit of the standard temperature, and S1 is carried out; the oil return temperature is higher than the lower limit of the standard temperature, and the process is shifted to P6;
p6: the control system performs convergence judgment on the difference delta t between the oil return temperature and the standard temperature lower limit, and when the oil return temperature is lower than the standard temperature lower limit, the control system goes to S43; convergence shifts to S41; the oil return temperature is higher than the upper limit of the standard temperature, and the process goes to S42;
s41: resetting the circulation counter, resetting the adjustment counter A and the adjustment counter B at the same time, and returning to S1; the regulating counter A is used for recording the regulating and reducing times of the watering valve, the continuous reducing times are a', and when the continuous regulating times are greater than a, the regulating process is judged to be non-convergence; the adjusting counter B is used for recording the adjusting and enlarging times of the watering valve, the continuously enlarging times are B', and when the continuously adjusting times are greater than B, the adjusting process is judged to be non-convergence; after the convergence is judged once, all the circulation counters and the adjustment counter A are required to be reset, and the circulation count is re-carried out;
s42: the opening degree of a single well water mixing valve is adjusted to be small, and the S51 is turned to;
s43: the opening degree of a single well water mixing valve is increased, and the process is turned to S52;
s51: adjust counter a+1 and turn to P71;
s52: adjusting the counter B+1 and turning to P72;
p71: the count value of the regulating counter A is compared with the preset convergence number a, if the count value is equal to the convergence number a, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
p72: the count value of the regulating counter B is compared with the preset convergence number B, if the count value is equal to the convergence number B, the step S6 is carried out, and if the count value is smaller than the convergence number, the step S1 is carried out;
s6: recording abnormal conditions into an equipment log;
s7: alarming and outputting;
s8: and (5) stopping.
2. The method for doping water in a single well between metering chambers according to claim 1, wherein each path of Shan Jinglai oil pipeline, an inlet valve of a single well separator connected with the Shan Jinglai oil pipeline and an oil return valve of the single well form a path of oil circuit branch, and a plurality of paths of oil circuit branch are arranged in parallel and work independently; in each oil path branch, the inlet valve of the single well separator and the single well oil return valve are opened alternatively.
3. The single well water mixing method between metering chambers according to claim 2, wherein each single well water mixing pipeline, a single well hot washing valve (5) connected with the single well water mixing pipeline and a single well water mixing valve (6) form a water path branch, and a plurality of water path branches are arranged in parallel and work independently; in each waterway branch, the single-well hot washing valve (5) and the single-well water mixing valve (6) are opened alternatively.
4. A single well water mixing method in a metering room according to claim 3, wherein a water mixing incoming water pressure gauge (3) and a water mixing incoming water temperature gauge (4) are arranged on the water mixing incoming water pipeline, and the pressure and the temperature of the water mixing incoming water are measured in real time.
5. The single well water mixing method between metering according to claim 4, characterized in that an oil return thermometer (7) is arranged on each path of Shan Jinglai oil pipeline for measuring the temperature of oil coming from each wellhead in real time.
6. The single well water mixing method of the metering room according to claim 5, wherein a wellhead water mixing valve (2) is arranged on a connecting pipeline of each single well water mixing pipeline and a corresponding wellhead, and a valve operating device (8) controls opening, closing and flow adjustment of the wellhead water mixing valve (2).
7. The single well water mixing method between metering chambers according to claim 6, wherein a wellhead pressure gauge (1) is arranged on a connecting pipeline of each Shan Jinglai oil pipeline and a corresponding wellhead valve group and is used for measuring wellhead return oil pressure.
8. The single well water mixing method of claim 7, wherein the valve operating device (8) and the control system (10) are connected by a cable (9) for signal transmission.
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