CN113565477A - Bittern extracting process by pipeline pump - Google Patents
Bittern extracting process by pipeline pump Download PDFInfo
- Publication number
- CN113565477A CN113565477A CN202110826717.1A CN202110826717A CN113565477A CN 113565477 A CN113565477 A CN 113565477A CN 202110826717 A CN202110826717 A CN 202110826717A CN 113565477 A CN113565477 A CN 113565477A
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- Prior art keywords
- brine
- well
- pipeline
- pipeline pump
- bittern
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 241001131796 Botaurus stellaris Species 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000012267 brine Substances 0.000 claims abstract description 107
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 229910052736 halogen Inorganic materials 0.000 claims description 14
- 150000002367 halogens Chemical class 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 14
- 238000005065 mining Methods 0.000 abstract description 10
- 239000011435 rock Substances 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000233378 Ephydridae Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 1
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The pipeline pump bittern collecting process includes connecting bittern outlet pipe to pipeline pump in serial or parallel mode, utilizing the vacuum effect of pipeline pump during rotation, that is, when the impeller rotates fast, the blades make bittern rotate fast, the rotating bittern flies away from the impeller under the action of centrifugal force, and after the bittern is thrown out from the pump, the central part of the impeller forms vacuum area. Brine in the brine well is pressed into the brine outlet pipe through the pipe network under the action of the water pressure of the injection well to the residual pressure of the brine outlet well, so that continuous water pumping is realized. It overcomes the pressure of bottom-hole brine lifted out of the ground, reduces the liquid flow friction in a shaft and a ground pipeline, and realizes the yield of a single well group from 45m3The h is increased to 58m3And h, the yield of the single well group is increased by 28.88%, the comprehensive utilization rate of underground resources in the later mining period of the salt rock well group is improved, the mining rate of the well group is improved, the requirement of green mining advocated by the nation is met, and the method has strong practicability and wide applicability.
Description
Technical Field
The invention relates to a bittern collecting process, in particular to a pipeline pump bittern collecting process.
Background
The underground salt rock resource is a mudstone, a salt rock and glauber's salt mudstone interbed layer, the solution cavity is continuously increased along with the increase of the extraction amount of the salt rock, the stability of the solution cavity is damaged due to process adjustment and production halt, and in addition, the mudstone is exposed in fresh water for a long time, the mudstone is extruded by mineral products, high-pressure water is injected into a fracture zone and continuously diffused to the periphery, so that a solvent injected into the solution cavity is invisibly consumed, the pressure of a brine outlet well from a water injection well is reduced, the pressure of brine at the bottom of the well is reduced, and the yield of the brine outlet well is gradually reduced; meanwhile, the well bore and the ground pipeline alternately run for a long time by using clear water, brine and water-insoluble substances, so that local pipeline corrosion and crystallization are caused, and the fluid friction resistance is increased. In order to ensure stable brine production, the water injection amount must be increased, which causes unbalance of injection-production ratio of a well group.
The water injection amount is increased by adopting brine automatically, the water injection pressure is reduced, the brine extraction amount is gradually reduced, the production cost is increased, the economic benefit is reduced, and the development of enterprises is severely restricted.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a process for extracting brine by a pipeline pump.
In order to achieve the above object, the present invention adopts the following technical solutions:
a pipeline pump adopts the bittern process, connect the pipeline pump in series on the bittern outlet pipe outside the bittern well, or connect the bittern outlet branch pipe with pipeline pump in parallel on the bittern outlet pipe outside the bittern well through the pipeline branch valve;
the vacuum effect of the pipeline pump is utilized to reduce the water pressure of the injection well and balance the water injection amount and the brine discharge amount.
The brine outlet pipe outside the brine well is provided with a pipeline valve.
The inlet and the outlet of the brine outlet branch pipe are respectively provided with a branch pipe valve.
Pipeline pump valves are respectively arranged at two ends of the pipeline pump.
And a filter is arranged at the inlet end of the pipeline pump on the brine outlet branch pipe.
The process for extracting brine by the pipeline pump is suitable for a twin-well water-soluble method: the system comprises two communicated injection and production unbalanced halogen wells, wherein one halogen well is used for injecting water, and the other halogen well is used for producing halogen.
Two communicated injection and production unbalanced halogen wells are used as a well group; the water injection pipes of the plurality of well groups share a clean water main pipeline through clean water branch valves respectively, and the brine outlet pipes of the plurality of well groups share a brine outlet main pipeline through brine branch valves respectively.
Furthermore, the clean water main pipeline is supplied with water by a clean water tank through a plurality of clean water pumps connected in parallel.
The brine outlet pipe in the brine well is connected with a plurality of brine outlet valves in parallel.
The water injection pipe in the brine well is connected with a plurality of water injection valves in parallel.
The invention has the advantages that:
the invention relates to a process for extracting bittern by a pipeline pump, which is characterized in that a pipeline pump is connected into a bittern outlet pipe of a bittern outlet well in a serial or parallel mode, the vacuum effect during the rotation of the pipeline pump is utilized, namely, when an impeller rotates rapidly, brine is promoted to rotate rapidly by blades, the rotating brine flies away from the impeller under the action of centrifugal force, and after the brine in the pump is thrown out, the central part of the impeller forms a vacuum area. Brine in the brine well is pressed into the brine outlet pipe through the pipe network under the action of the water pressure of the injection well to the residual pressure of the brine outlet well, and the brine is circulated in sequence to realize continuous pumping. It overcomes the pressure shortage of bottom-hole brine lifted out of the ground, reduces the liquid flow friction in the shaft and the ground pipeline, and realizes the yield of a single well group from 45m3The h is increased to 58m3And h, the yield of the single well group is increased by 28.88%, the comprehensive utilization rate of underground resources in the later mining period of the salt rock well group is improved, the mining rate of the well group is improved, the requirement of green mining advocated by the nation is met, and the method has strong practicability and wide applicability.
Drawings
FIG. 1 is a flow chart of a process for extracting halogen by a pipeline pump.
Fig. 2 is a flow chart of clear water-brine.
The designations in the drawings have the following meanings: 1. brine well, 2, filter, 3, pipeline pump, 4, brine tank, 5, clean water tank, 6, clean water pump, 7, clean water main pipeline, 8, brine outlet main pipeline.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
A pipeline pump brine extraction process takes two communicated brine wells with unbalanced injection and extraction as a well group unit, adopts a double-well continuous water-dissolving method, wherein one brine well is used for water injection, and the other brine well 1 is used for brine extraction.
A water injection pipe is arranged in the brine well for injecting water, and the water injection pipe in the brine well is provided with a plurality of water injection valves which are connected in parallel and used for back water injection and well pouring. The water injection pipe is connected with the main clear water pipe 7 through a clear water branch valve.
A brine outlet pipe is arranged in the brine well 1 for brine outlet, a plurality of brine outlet valves connected in parallel are arranged on the brine outlet pipe in the brine well 1, and a pipeline valve is arranged on the brine outlet pipe outside the brine well 1. A brine outlet branch pipe with a pipeline pump 3 is arranged on the brine outlet pipe outside the brine well 1 in parallel, and the inlet and the outlet of the brine outlet branch pipe are respectively connected with the brine outlet pipe through branch pipe valves. The bittern outlet branch pipe is also connected with a filter 2 in series and is arranged at the inlet end of the pipeline pump 3.
The end of the brine outlet pipe is connected into the brine outlet main pipeline 8 through a brine branch valve, and the end of the brine outlet main pipeline 8 is connected with the brine tank 4.
A plurality of well units are connected in parallel between the clean water main pipeline 7 and the brine outlet main pipeline 8 through a clean water branch valve and a brine branch valve. The clean water tank 5 supplies water for a clean water main pipeline 7 through a plurality of clean water pumps 6 which are connected in parallel.
Examples
The project of mining and transporting brine in Huai salt mining industry is completed in 2009, and the raw material brine is produced to the present, mainly provided for enterprises such as sun-shine salt, coastal chemical industry, and Liyuanchong alkali factory, and mainly comprises the mixed brine of brine extracted from 12 groups of salt wells in a mining area and brine purchased from Huabang and Jingshen stock. In 2009 and 2020, about 5787 x 10 from brine of salt rock4The partial well group production has exceeded 320 x 104m3The amount of the extracted salt rock ore reaches 185.31 x 10 in brine4t, as the produced quantity of the salt rock well group is increased, the well group is aged gradually, and in addition, the geological structure is complex, the resources are deficient, the water injection quantity is increased gradually, the water injection pressure is reduced, and the brine production quantity is reduced gradually, and the self-production quantity can not meet the customer requirements.
The number of well groups produced in a brine production workshop is increased from 10 pairs of well groups in 2009 to 12 pairs of wells, the number of the well groups is increased, the brine transportation amount and the water injection amount also show the trend of increasing and decreasing year by year, and the phenomenon of unbalance of production and injection of different degrees occurs in part of the well groups.
The following table 1 shows the brine recovery conditions of well groups H11-12 in 2017 and 2019:
TABLE 1
The following table 2 is a statistical table of influence factors of water injection amount and brine discharge amount on the well group H11-12 from month 6 in 2019 to month 12 in 2019:
TABLE 2
As can be seen from Table 2, the yield of the well group is reduced, regular back flushing, back water injection and well reversing production are required, the back water injection and well reversing of the well group are required for 3-5 hours, the yield of the salt well is seriously influenced, the upward dissolution is accelerated, the balance of a dissolving cavity is damaged, and the underground accident is easily caused.
According to the pipeline pump brine production process, well groups H11-12 are technically improved based on the process flow chart of FIG. 1:
A. and repairing a part of the salt well. Washing a well, drilling and grinding scale on a well wall, cutting a pipe, removing a deformed section of a casing pipe in the production technology, ensuring a well shaft to be smooth and ensuring no sediment accumulation around the casing pipe;
B. erecting a line for installing the pipeline pump 3;
C. well head technical improvement: the brine is pumped into the brine tank 4 from the salt rock well group through the pipeline pump 3 at the well mouth, and the brine can be lifted out of the ground by the residual pressure at the well bottom until the brine is fed into the brine tank 4.
The technical requirements after technical modification are as follows:
the amount of water injection is not increased, and the amount of brine production is increased. And (3) mining requirements on the mine well group: the injection ratio of the well group is not less than 0.85, and the brine production amount is not less than 60m3And h, continuously collecting halogen. By means of the suction lift (40m) and the delivery lift (70m) of the pipeline pump, 177.8mm by 9.19mm of inner diameter 159.42mm of the production technology casing pipe and 159.0mm by 11.0mm of inner diameter 137.0mm of the ground pipeline. Water injection well control water injection amount 62m3H, water injection pressure 4.35 mPa.
Operation:
well group H11-12 was first run at "5 m" on a raw production basis3The flow rate is gradually increased, the operation lasts for 10-12 days, and the halogen collecting amount is stable when the pipeline pump 3 operates. Then the water injection quantity is gradually reduced, and after 15-18 days of operation, the stable operation point (water injection point) of the pipeline pump 3 is obtainedWhen the amount is not changed, the amount of the halogen collected by the pipeline pump 3 is not reduced).
The operation is debugged by the pipeline pump 3 for 6 months, and the flow rate of the brine production is 45m3The/h is increased to 56m3H, water injection flow rate is 83m3The volume/h is reduced to 65m3H is used as the reference value. At present, the well group adopts '1-month reverse water injection for 1 time, and 7-month well pouring for 1 time', and the yield is stable.
The brine production capacity of the H11-12 well group is improved by 23 percent, and 1.04 x 10 more single well group is produced in 1 month4Square, single well group reduces water injection by 1.39 x 104The monthly profit can be increased by 19.6 x 104And (5) Yuan.
In addition, H9-H10 are debugging production, and the flow rate of the collected halogen is from 43m3The/h is increased to 52m3H, water injection flow rate is 75m3The volume/h is reduced to 62m3/h。
Table 3 below is a statistical table of the production of brine by H11-12 and H9-10 pipeline pumps 3:
TABLE 3
Based on the technical improvement of the invention, the pressure insufficiency (the inlet pressure of a pipeline pump is zero) of bottom-hole brine lifted to the ground is effectively overcome, the liquid flow friction resistance (the outlet pressure of the pump is 0.45mPa) in a shaft and a pipeline on the ground is reduced, and the single-well group yield is realized to be 45m3The h is increased to 58m3Production per well group increased 28.88%.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. A pipeline pump brine extraction process is characterized in that a pipeline pump is connected in series with a brine outlet pipe outside a brine well, or a brine outlet branch pipe with the pipeline pump is connected in parallel with the brine outlet pipe outside the brine well through a pipeline branch valve;
the vacuum effect of the pipeline pump is utilized to reduce the water pressure of the injection well and balance the water injection amount and the brine discharge amount.
2. The process of claim 1, wherein a pipeline valve is arranged on the brine outlet pipe outside the brine well.
3. The process of claim 1, wherein the inlet and outlet of the brine outlet branch pipe are respectively provided with a branch valve.
4. The process for extracting bittern by pipeline pump as claimed in claim 1, wherein pipeline pump valves are provided at two ends of said pipeline pump respectively.
5. The process of claim 1, wherein the inlet end of the pipeline pump is provided with a filter on the branch pipe for discharging brine.
6. The process for pumping bittern from pipeline according to any one of claims 1-5, wherein it is suitable for twin well connected water dissolving method: the system comprises two communicated injection and production unbalanced halogen wells, wherein one halogen well is used for injecting water, and the other halogen well is used for producing halogen.
7. The process of claim 6, wherein two interconnected injection-production unbalanced brine wells are used as a well group;
the water injection pipes of a plurality of well groups share a clean water main pipe through clean water branch valves respectively,
the brine outlet pipes of the plurality of well groups share a brine outlet main pipeline through brine branch valves respectively.
8. The process of claim 7, wherein the main clean water pipeline is supplied with water from a clean water tank through a plurality of clean water pumps connected in parallel.
9. The process of claim 6, wherein a plurality of brine outlet valves are connected in parallel to the brine outlet pipe in the brine well.
10. The process of claim 6, wherein the water injection pipe in the brine well is connected with a plurality of water injection valves in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110826717.1A CN113565477A (en) | 2021-07-21 | 2021-07-21 | Bittern extracting process by pipeline pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110826717.1A CN113565477A (en) | 2021-07-21 | 2021-07-21 | Bittern extracting process by pipeline pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113565477A true CN113565477A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110826717.1A Pending CN113565477A (en) | 2021-07-21 | 2021-07-21 | Bittern extracting process by pipeline pump |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206194A (en) * | 2013-04-02 | 2013-07-17 | 中国石油大学(华东) | Offshore oil platform injecting and producing system |
| CN104153745A (en) * | 2014-07-11 | 2014-11-19 | 山西蓝焰煤层气集团有限责任公司 | Integrated extraction system for coal mine mining area ground well |
| CN204754900U (en) * | 2015-06-09 | 2015-11-11 | 德州实华化工有限公司 | A salt mine system for fast run -up groove |
| CN206220945U (en) * | 2016-10-24 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of oil field flood pattern |
| CN109252851A (en) * | 2018-09-30 | 2019-01-22 | 中盐勘察设计院有限公司 | A kind of water filling that adopting salt for drilling solution goes out halogen switch |
-
2021
- 2021-07-21 CN CN202110826717.1A patent/CN113565477A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206194A (en) * | 2013-04-02 | 2013-07-17 | 中国石油大学(华东) | Offshore oil platform injecting and producing system |
| CN104153745A (en) * | 2014-07-11 | 2014-11-19 | 山西蓝焰煤层气集团有限责任公司 | Integrated extraction system for coal mine mining area ground well |
| CN204754900U (en) * | 2015-06-09 | 2015-11-11 | 德州实华化工有限公司 | A salt mine system for fast run -up groove |
| CN206220945U (en) * | 2016-10-24 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of oil field flood pattern |
| CN109252851A (en) * | 2018-09-30 | 2019-01-22 | 中盐勘察设计院有限公司 | A kind of water filling that adopting salt for drilling solution goes out halogen switch |
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Application publication date: 20211029 |