CN115007572A - Blockage removal and descaling process for screen pipe of sewage filter tank of combined station and oil removal and cleaning process for filter material - Google Patents
Blockage removal and descaling process for screen pipe of sewage filter tank of combined station and oil removal and cleaning process for filter material Download PDFInfo
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- CN115007572A CN115007572A CN202210489822.5A CN202210489822A CN115007572A CN 115007572 A CN115007572 A CN 115007572A CN 202210489822 A CN202210489822 A CN 202210489822A CN 115007572 A CN115007572 A CN 115007572A
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- injecting
- viscous micelle
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Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000010865 sewage Substances 0.000 title claims abstract description 34
- 238000004140 cleaning Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000000693 micelle Substances 0.000 claims abstract description 37
- 239000003814 drug Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000003027 oil sand Substances 0.000 claims abstract description 14
- 230000015556 catabolic process Effects 0.000 claims abstract description 12
- 238000006731 degradation reaction Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 230000000593 degrading effect Effects 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 238000011001 backwashing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 15
- 238000011065 in-situ storage Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229940071089 sarcosinate Drugs 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- -1 stearyl sarcosinate Chemical compound 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Filtration Of Liquid (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention belongs to the technical field of oil field production, and particularly relates to a process for plugging and descaling a sieve tube and deoiling and cleaning a filter material of a sewage filter tank of a combined station, which comprises the following steps of 1, pipeline connection; 2. injecting the prepared ternary viscous micelle degradation liquid into a medicament box; 3. injecting the ternary viscous micelle degradation liquid into a ternary viscous micelle organic scale slug of a filter tank sieve tube, carrying out tank-closing reaction for 24 hours, then returning the ternary viscous micelle degradation liquid to a reagent box, and injecting air in the tank-closing process; 4. injecting the prepared ternary viscous micelle degradation liquid, ternary dissolving liquid and oil sand separation liquid into a reagent box; 5. injecting ternary viscous micelle degradation liquid, ternary dissolving liquid and oil sand separation liquid into a filter material organic scale slug, carrying out a tank-sealing reaction for 24 hours, then returning to a reagent box, and injecting air in the tank-sealing process; 6. the dirty oil on the upper part of the filter tank is replaced by the liquid medicine and enters a recovery system; 7. and starting a back flushing process of the sewage filtering tank. The process can effectively remove viscous micelle, organic dirt and dirty oil in the organic dirt of the sieve tube and the filter material.
Description
Technical Field
The invention belongs to the technical field of oilfield production, and particularly relates to a process for deblocking and descaling an in-situ sieve tube and degreasing and cleaning a filter material of a sewage filter tank of a combined station.
Background
At present, more than 3600 sewage filter tanks are counted in Daqing oil field united stations, and the number of the sewage filter tanks is increased every year. The sewage filtering tank can form organic blockage of an upper sieve tube, a lower sieve tube, a filtering material and a back washing header for the sewage filtering tank due to long-term filtration of the output liquid, so that the daily sewage treatment capacity cannot be finished for the production of the oil field, and the reinjection water reduction of the crude oil production is caused. In order to solve the technical problems, skid-mounted integrated cleaning equipment is widely applied to blockage removal of a filter tank and a pipeline, but the blockage removal process cannot achieve the effects of removing dirt and oil. Therefore, the in-situ sieve tube blockage removal and scale removal and filter material oil removal cleaning process of the sewage filter tank of the combined station is designed.
Disclosure of Invention
In order to solve the problems, the invention provides a process for unblocking and descaling an in-situ sieve tube and deoiling and cleaning a filter material of a sewage filter tank of a combined station. The process can effectively remove the viscous micelle, organic dirt and dirty oil in the in-situ sieve tube and the filter material of the sewage filter tank.
The technical scheme adopted by the invention is as follows: a process for unblocking and descaling a screen pipe and removing oil from a filter material of a sewage filter tank of a combined station comprises the following steps:
connecting skid-mounted descaling cleaning equipment with a back-flushing header of a sewage filter tank through a pipeline;
step two, preparing a ternary viscous micelle dirt degrading agent with a certain concentration, and injecting the prepared ternary viscous micelle degrading liquid into a medicament box;
injecting ternary viscous micelle degradation liquid into a ternary viscous micelle organic scale slug of a filter tank sieve tube through a centrifugal pump, performing tank-closing reaction for 20-28 hours, then returning to a medicament box, and injecting air in the tank-closing process;
step four, preparing a ternary viscous micelle dirt degrading agent, a ternary dissolving agent and an oil sand separating agent with certain concentrations, and injecting the prepared ternary viscous micelle degrading liquid, ternary dissolving liquid and oil sand separating liquid into a reagent box;
injecting ternary viscous micelle degradation liquid, ternary dissolving liquid and oil sand separation liquid into a filter material organic scale slug by a centrifugal pump, performing tank-closing reaction for 20-28 hours, then returning to a reagent box, and injecting air in the tank-closing process;
step six, injecting the liquid medicine into a ternary viscous micelle organic scale slug and a filter material organic scale slug of a filter tank sieve tube to replace sump oil on the upper part of the filter tank to enter a recovery system, and discharging the residual liquid medicine back to a medicine preparation tank to perform lower tank construction and medicine preparation;
and step seven, starting a back washing process of the sewage filtering tank, and checking and accepting the construction effect according to the flow.
Furthermore, the pot-closed reaction time in the third step and the fifth step is 20 hours.
Furthermore, the pot-closed reaction time in the third step and the fifth step is 24 hours.
Further, the pot-sealed reaction time in the third step and the fifth step is 28 hours.
The invention has the beneficial effects that: provides a process for removing blockage and scale of an in-situ sieve tube and removing oil and cleaning filter materials of a sewage filter tank of a united station. The process can effectively remove the viscous micelle, organic dirt and dirty oil in the in-situ sieve tube and the filter material of the sewage filter tank. The lower sieve tube can be taken out for descaling without shifting and drawing the filter material, the technical problem of descaling of the lower sieve tube can be solved in situ, in-situ descaling and cleaning can be realized, one sewage filter tank can be finished in 3 days, time, labor and cost are saved (15-20 days are needed for descaling and cleaning of one sewage filter tank in shifting and drawing and mounting), and the production requirements of oil fields are met. The main advantages of the technology are as follows:
(1) the process of the in-situ blockage removal of the sewage filter tank is a process of physical and chemical reaction, and mainly reduces the cost and the period of displacing, digging, installing and cleaning the filter material and replacing the sieve tube, avoids the generation amount of dangerous wastes such as oily filter material and the like generated by digging and installing, and reduces the environmental protection pressure.
(2) The in-situ blockage removing process of the sewage filter tank does not change the characteristics of the filter tank, new derivatives cannot be generated, and the risk of sucking the toxic and harmful gases and the risk of explosive gas flash explosion in manual drawing and loading are avoided in closed construction.
(3) The process is suitable for closed-loop construction at normal temperature and normal pressure, and has wide application temperature range and no danger.
(4) The process adopts gas injection stirring, is safe and reliable, is suitable for scaling characteristics of various produced water and tank body temperature, is not influenced by seasons, and has no harm to sieve tubes and filter materials in the tank body.
Detailed Description
Example one
A process for unblocking and descaling a screen pipe and removing oil from a filter material of a sewage filter tank of a combined station comprises the following steps:
connecting skid-mounted descaling cleaning equipment with a back-flushing header of a sewage filter tank through a pipeline;
step two, preparing a ternary viscous micelle dirt degrading agent with a certain concentration, and injecting the prepared ternary viscous micelle degrading liquid into a medicament box;
injecting ternary viscous micelle degradation liquid into a ternary viscous micelle organic scale slug of a filter tank sieve tube through a centrifugal pump, carrying out tank-closing reaction for 24 hours, then returning the ternary viscous micelle degradation liquid to a medicament box, and injecting air in the tank-closing process;
step four, preparing a ternary viscous micelle scale degrading agent, a ternary dissolving agent and an oil sand separating agent with certain concentrations, and injecting the prepared ternary viscous micelle degrading solution, ternary dissolving solution and oil sand separating agent into a reagent box;
injecting ternary viscous micelle degradation liquid, ternary dissolving liquid and oil sand separation liquid into a filter material organic scale slug by a centrifugal pump, carrying out tank-sealing reaction for 24 hours, then returning to a reagent box, and injecting air in the tank-sealing process;
step six, injecting the liquid medicine into a ternary viscous micelle organic scale slug and a filter material organic scale slug of a filter tank sieve tube to replace sump oil on the upper part of the filter tank to enter a recovery system, and discharging the residual liquid medicine back to a medicine preparation tank to perform lower tank construction and medicine preparation;
and step seven, starting a back washing process of the sewage filtering tank, and checking and accepting the construction effect according to the flow.
Wherein, the ternary dissolving agent and the oil sand separating agent in the third step and the fourth step are selected from the conventional ternary dissolving agent and the conventional oil sand separating agent. The ternary viscous micelle dirt degrading agent is prepared by diluting 12% of stearyl sarcosinate and 22% of sodium oxalate with 55% of clear water, and stirring the mixture in a reaction kettle to form uniform liquid; adding 7% of sulfonic acid into the reaction kettle, and mixing and stirring; and then 4% of nonylphenol polyoxyethylene ether is added into the reaction kettle and mixed and stirred to prepare uniform liquid which is the ternary viscous micelle dirt degrading agent.
The cleaning process can remove blockage and scale of a screen pipe and a filter material of the sewage filter tank, and remove blockage and dredge the screen pipe scale and the filter material hardening generated by long-term filtration of produced liquid of the oilfield sewage filter tank. When the oil sand separating agent, the dissolving agent and the viscosity reducer are contacted with the sieve tube and the filter material, organic scales on the sieve tube are dissolved, and dirty oil on the surface of the filter material is separated. The air injected during the reaction period of the closed tank plays a role of physical stirring, accelerates the chemical reaction of the medicament and a contact object, makes the produced liquid lose the viscosity constraint of the emulsion, decomposes polymer viscous micelles in the sewage into small particles, removes composite dirt and dirty oil on the surfaces of the sieve tube and the filter material, disperses the hardening of the filter material, opens a fluid channel, increases the filtration volume of the recovered produced liquid, and removes the blockage of the filter tank.
Claims (4)
1. A process for removing blockage and scale of a screen pipe and removing oil and cleaning a filter material of a sewage filter tank of a combination station is characterized by comprising the following steps: the process comprises the following steps:
firstly, connecting skid-mounted descaling cleaning equipment with a back-washing header of a sewage filter tank through a pipeline;
step two, preparing a ternary viscous micelle dirt degrading agent with a certain concentration, and injecting the prepared ternary viscous micelle degrading liquid into a medicament box;
injecting ternary viscous micelle degradation liquid into a ternary viscous micelle organic scale slug of a filter tank sieve tube through a centrifugal pump, performing tank-closing reaction for 20-28 hours, then returning to a medicament box, and injecting air in the tank-closing process;
step four, preparing a ternary viscous micelle dirt degrading agent, a ternary dissolving agent and an oil sand separating agent with certain concentrations, and injecting the prepared ternary viscous micelle degrading liquid, ternary dissolving liquid and oil sand separating liquid into a reagent box;
injecting ternary viscous micelle degradation liquid, ternary dissolving liquid and oil sand separation liquid into a filter material organic scale slug by a centrifugal pump, performing tank-closing reaction for 20-28 hours, then returning to a reagent box, and injecting air in the tank-closing process;
step six, injecting the liquid medicine into a ternary viscous micelle organic scale slug and a filter material organic scale slug of a filter tank sieve tube to replace sump oil on the upper part of the filter tank to enter a recovery system, and discharging the residual liquid medicine back to a medicine preparation tank to perform lower tank construction and medicine preparation;
and step seven, starting a back washing process of the sewage filtering tank, and checking and accepting the construction effect according to the flow.
2. The process for unblocking and descaling a sieve tube and deoiling and cleaning a filter material of a sewage filter tank of a united station according to claim 1, which is characterized in that: and the tank-sealing reaction time in the third step and the fifth step is 20 hours.
3. The process for unblocking and descaling a sieve tube and filtering material deoiling and cleaning of a sewage filter tank of a combined station according to claim 1, which is characterized in that: and the tank-sealing reaction time in the third step and the fifth step is 24 hours.
4. The process for unblocking and descaling a sieve tube and filtering material deoiling and cleaning of a sewage filter tank of a combined station according to claim 1, which is characterized in that: the pot-closing reaction time in the third step and the fifth step is 28 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489822.5A CN115007572B (en) | 2022-05-07 | 2022-05-07 | Screen pipe blocking and scale removal and filter material oil removal cleaning process for sewage filtering tank of combined station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489822.5A CN115007572B (en) | 2022-05-07 | 2022-05-07 | Screen pipe blocking and scale removal and filter material oil removal cleaning process for sewage filtering tank of combined station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115007572A true CN115007572A (en) | 2022-09-06 |
| CN115007572B CN115007572B (en) | 2023-11-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210489822.5A Active CN115007572B (en) | 2022-05-07 | 2022-05-07 | Screen pipe blocking and scale removal and filter material oil removal cleaning process for sewage filtering tank of combined station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115007572B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772859A (en) * | 2004-11-11 | 2006-05-17 | 大连三达奥克化学有限公司 | Cleaning agent and cleaning process for regenerating filter material in oil field sewage filtering tank |
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| Publication number | Publication date |
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| CN115007572B (en) | 2023-11-24 |
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