CN107524423A - A kind of application method of oil well microbial Wax removing agent - Google Patents
A kind of application method of oil well microbial Wax removing agent Download PDFInfo
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- CN107524423A CN107524423A CN201710831661.2A CN201710831661A CN107524423A CN 107524423 A CN107524423 A CN 107524423A CN 201710831661 A CN201710831661 A CN 201710831661A CN 107524423 A CN107524423 A CN 107524423A
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- oil well
- oil
- wax
- water
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Classifications
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- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing, limiting or eliminating the deposition of paraffins or like substances
Abstract
The present invention provides a kind of application method of oil well microbial Wax removing agent, and specific steps include：（1）Lab-evaluation, including microorganism emulsify degradation, pour-point depressing process and to nutrient solution surface tension, the evaluation of the influence of pH value；（2）Oil well screens；（3）Oil well cleans, and using hot wash method, hot water temperature is more than temperature and is more than 90 DEG C；（4）Microorganism sleeve pipe injects, it should be noted that investigating following parameter during oil well biology Paraffin Removal：Electric current, indicator card, load and oil well output are produced, and strain addition and addition cycle are adjusted accordingly；Effect detection evaluate, method have above carry polished rod look into wax method and biological Microscopical Method For Detection observation wax deposition situation, record oil field period of removing the wax contrasted again.Construction is simple of the present invention, sleeve pipe addition method do not influence oil well and normally produced, and can prevent oil well paraffinication and viscosity reduction, extend oil well cleaning cycle, increase oilwell produced fluid amount.
Description
Technical field
The present invention relates to technical field of petrochemical industry, and in particular to a kind of application method of oil well microbial Wax removing agent.
Technical background
During oil exploitation, with the decline of temperature in wellbore and pressure, the waxy component in crude oil usually can be in oil
Separate out, grow up and deposit in pipe, and then form oil well paraffinication, have a strong impact on being normally carried out for oil well production.Therefore, it is necessary to take
Effective measures control oil well paraffinication.
At present, controlling the method for oil well paraffinication mainly has Physical, chemical method.But Physical is (mainly including hot wash, machinery
Paraffin cutting) there is cost it is high, big to formation damage the shortcomings of；Chemical method (mainly includes paraffin removing with chemical method agent and chemical paraffin removing and inhibitor)
Then there is the shortcomings of dosage is big, cost is high, safety and environmental protection performance difference.
The content of the invention
A kind of application method of oil well microbial Wax removing agent is provided to solve the above technical problem present invention, prevents oil well
Wax deposition and viscosity reduction, extend oil well cleaning cycle, increase Liquid output.
The technical scheme is that：A kind of application method of oil well microbial Wax removing agent, is specifically included：
(1) Lab-evaluation, including microorganism emulsify degradation, pour-point depressing process and to nutrient solution surface tension, pH value
Influence evaluation；
(2) oil well screens, and screening criteria is：Bottom hole temperature (BHT)≤120, production fluid moisture content 5-98%, production fluid pH value
6.5-8.0, daily fluid production rate 1-40m3/ d, relative oil density≤0.96, crude oil content of wax rate >=3.0, formation water salinity are low
In 36 × 104Mg/L, submergence >=250m；
(3) oil well cleans, and using hot wash method, hot water temperature is more than temperature and is more than 90 DEG C；
(4) microorganism sleeve pipe injects, and oil well is normally after production, and individual well adds 200kg, and the cycle is 1-2 months, by microorganism
Oil well is pumped into from oil casing annular space, the nutritional agents added after being dissolved with water, should be noted during oil well biology Paraffin Removal
Meaning investigates following parameter：Electric current, indicator card, load and oil well output are produced, and strain addition and addition cycle are entered accordingly
Row adjustment；
(5) effect detection evaluate, method have above carry polished rod look into wax method and biological Microscopical Method For Detection observation wax deposition situation, record oil field
Period of removing the wax is contrasted again.
Further, the microorganism emulsification degradation evaluation method of step (1) is scheme：Add in 250mL conical flasks
Enter 100mL stratum water and a small amount of mineral nutrition thing, add crude oil, oil well deposition wax stone or solid into different conical flasks respectively
Each 3g of paraffin, each bottle access bacterium solution 10mL, seal bottleneck with rubber stopper, do not put 60 DEG C~65 DEG C constant temperature oil bath culture 7d, and not
The dummy of access strain compares, emulsion dispersion state of the observation microbial action to wax.
Further, the pour-point depressing process evaluation method of step (1) is scheme：100mL stratum are added in 250mL conical flasks
Water, a small amount of mineral nutrition thing 20g oil wells deposition wax stone and 20mL bacterium solutions, seal bottleneck with rubber stopper, put 65 DEG C~67 DEG C perseverances
Warm oil bath handles 7d, leaches liquid, seals bottleneck, puts 75 DEG C of insulating box dehydration 24h, cooling water intaking, then be dehydrated 24h.Take dehydration
Crude oil determines freezing point, to replace the reaction bulb of bacterium solution with water as control.
Further, step (1) is scheme to the evaluation method of nutrient solution surface tension, the influence of pH value：Bored in 250mL
100mL stratum water and a small amount of mineral nutrition thing are added in shape bottle, crude oil or well deposition wax stone 3g is added, accesses 10mL bacterium
Liquid, sealing, puts 60 DEG C of constant temperature oil bath culture 7d, is filtered with filter paper, takes filtrate to measure pH value with acidity, and table is surveyed with interfacial tensimeter
Face tension force, using the reaction bulb matrix not being inoculated with as control, and represent that bacterial metabolism produces with surface tension decreasing value and pH value change
The ability of surfactant and acid.
Further, the oil well daily fluid production rate in step (2) is 2-20m to scheme3/ d, 250≤submergence≤400m.
Further, the addition of different oil well nutritional agents is scheme with the cycle is added in step (4)：Water mixing solution salt oil well
Not water mixing oil well adds oil jacket annular space after 1.0kg nutritional agents is dissolved with water daily；Water-sensitive oil well adds 3.0kg battalion for every 3 days
Agent is supported, oil jacket annular space is added after the dissolving of a small amount of water；Barreler adds 3.0kg nutritional agents in every 3 days, is determined according to oil well paraffinication situation
Phase adds microbial bacterial agent 100kg；The pole Severe well that shakes out adds 3.0kg nutritional agents in every 3 days, is added according to the oil well paraffinication cycle
100kg-200kg microbial bacterial agents, reduce as far as possible and look into wax or well-flushing in order to avoid causing pump leakage or sand card.
It is an advantage of the invention that：
1. construction is simple, sleeve pipe addition method does not influence oil well and normally produced；
2. strain is nontoxic and does not damage stratum, safety and environmental protection；
3. based on wax control, wax removal wax-proof viscosity reducing is carried out simultaneously, and action effect is lasting, and can improve production liquid rate；
4. effectively reducing individual well wax deposition operations number, extend oil well cleaning cycle；
5. pair well head pipeline also functions to certain effect for preventing wax deposition from blocking.
Embodiment
Clearly complete description is done to the present invention below, so that those skilled in the art need not make creative labor
Under conditions of dynamic, it can fully implement the present invention.
Embodiment 1：Zhongyuan Oil Field oil extraction No.1 Factory has carried out microbial wax control field test, a kind of micro- life of oil well to oil well
The specific steps of the application method of thing Wax removing agent include：
(1) Lab-evaluation, including microorganism emulsify degradation, pour-point depressing process and to nutrient solution surface tension, pH value
Influence evaluation, microorganism emulsification degradation evaluation method is：100mL stratum water is added in 250mL conical flasks and is lacked
Mineral nutrition thing is measured, crude oil, oil well deposition wax stone or each 3g of solid paraffin, each bottle is added into different conical flasks respectively and connects
Enter bacterium solution 10mL, seal bottleneck with rubber stopper, put 60 DEG C~65 DEG C constant temperature oil bath culture 7d, the blank sample with not accessing strain
Originally compare, emulsion dispersion state of the observation microbial action to wax；Pour-point depressing process evaluation method is：In 250mL tapers
100mL stratum water, a small amount of mineral nutrition thing 20g oil wells deposition wax stone and 20mL bacterium solutions are added in bottle, with rubber stopper air-tight bottle
Mouthful, to put 65 DEG C~67 DEG C constant temperature oil baths and handle 7d, leach liquid, seal bottleneck, put 75 DEG C of insulating boxs dehydration 24h, cooling is fetched water,
24h is dehydrated again.Dewatered oil is taken to determine freezing point, to replace the reaction bulb of bacterium solution with water as control；To nutrient solution surface tension,
The evaluation method of the influence of pH value is：100mL stratum water and a small amount of mineral nutrition thing are added in 250mL conical flasks, then is added
Enter crude oil or well deposition wax stone 3g, access 10mL bacterium solutions, sealing, put 60 DEG C of constant temperature oil bath culture 7d, filtered with filter paper, take filtrate
PH values are measured with acidity, surface tension is surveyed with interfacial tensimeter, using the reaction bulb matrix not being inoculated with as control, and with surface
Power decreasing value and pH value change represent the ability of bacterial metabolism production surfactant and acid.
(2) oil well screens, and screening criteria is：Bottom hole temperature (BHT)≤120, production fluid moisture content 5-98%, production fluid pH value
6.5-8.0, daily fluid production rate 1.5m3/ d, relative oil density≤0.96, crude oil content of wax rate >=3.0, formation water salinity are less than
36×104Mg/L, submergence >=250m；
(3) oil well cleans, and using hot wash method, hot water temperature is more than temperature and is more than 90 DEG C；
(4) microorganism sleeve pipe inject, oil well normally production after, individual well adds 200kg, and the cycle is 1 month, by microorganism from
Oil casing annular space is pumped into oil well, the nutritional agents added after being dissolved with water, should be noted that during oil well biology Paraffin Removal
Investigate following parameter：Electric current, indicator card, load and oil well output are produced, and to strain addition and adds cycle progress accordingly
Adjustment；
(5) effect detection evaluate, method have above carry polished rod look into wax method and biological Microscopical Method For Detection observation wax deposition situation, record oil field
Period of removing the wax is contrasted again, using finding that period of removing the wax extends after microorganism, reduces the well of well-flushing 40, operation 8 times altogether.
It is preferred that step (2) in oil well daily fluid production rate be 2-20m3/ d, 250≤submergence≤400m.
It is preferred that step (4) in oil well nutritional agents addition and add the cycle be：Every 3 days plus 3.0kg nutritional agents.
Presently preferred embodiments of the present invention is described above, it should be pointed out that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those skilled in the art, without departing from the scope of the technical proposal of the invention, the technology according to the present invention
Essence still falls within technical solution of the present invention protection to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of.
Claims (7)
1. a kind of application method of oil well microbial Wax removing agent, it is characterised in that step includes：
（1）Lab-evaluation, including microorganism emulsify degradation, pour-point depressing process and to nutrient solution surface tension, the shadow of pH value
Loud evaluation；
（2）Oil well screens, and screening criteria is：Bottom hole temperature (BHT)≤120, production fluid moisture content 5-98%, production fluid pH value 6.5-8.0,
Daily fluid production rate is 1-40m3/ d, relative oil density≤0.96, crude oil content of wax rate >=3.0, formation water salinity less than 36 ×
104Mg/L, submergence >=250m；
（3）Oil well cleans, and using hot wash method, hot water temperature is more than temperature and is more than 90 DEG C；
（4）Microorganism sleeve pipe injects, and for oil well normally after production, individual well adds 200kg, and the cycle is 1-2 months, by microorganism from oil
Casing annulus is pumped into oil well, the nutritional agents added after being dissolved with water, it should be noted that examining during oil well biology Paraffin Removal
Examine following parameter：Electric current, indicator card, load and oil well output are produced, and strain addition and addition cycle are adjusted accordingly
It is whole；
（5）Effect detection evaluate, method have above carry polished rod look into wax method and biological Microscopical Method For Detection observation wax deposition situation, record oil field wax removal
Cycle is contrasted again.
A kind of 2. application method of oil well microbial Wax removing agent according to claim 1, it is characterised in that step（1）
Microorganism emulsification degradation evaluation method be：100mL stratum water and a small amount of mineral nutrition are added in 250mL conical flasks
Things, crude oil, oil well deposition wax stone or each 3g of solid paraffin, each bottle are added into different conical flasks respectively and accesses bacterium solution 10mL,
Bottleneck is sealed with rubber stopper, puts 60 DEG C~65 DEG C constant temperature oil bath culture 7d, the dummy with not accessing strain compares,
Observe emulsion dispersion state of the microbial action to wax.
A kind of 3. application method of oil well microbial Wax removing agent according to claim 1, it is characterised in that step（1）
Pour-point depressing process evaluation method be：100mL stratum water, a small amount of mineral nutrition thing 20g oil wells are added in 250mL conical flasks
Wax stone and 20mL bacterium solutions are deposited, bottleneck is sealed with rubber stopper, 65 DEG C~67 DEG C constant temperature oil bath processing 7d is put, leaches liquid, sealing
Bottleneck, 75 DEG C of insulating box dehydration 24h, cooling water intaking are put, then be dehydrated 24h.
4. dewatered oil is taken to determine freezing point, to replace the reaction bulb of bacterium solution with water as control.
A kind of 5. application method of oil well microbial Wax removing agent according to claim 1, it is characterised in that step（1）
Evaluation method to nutrient solution surface tension, the influence of pH value is：100mL stratum water is added in 250mL conical flasks and is lacked
Mineral nutrition thing is measured, crude oil or well deposition wax stone 3g is added, accesses 10mL bacterium solutions, sealing, put 60 DEG C of constant temperature oil bath cultures
7d, filtered with filter paper, take filtrate to measure pH value with acidity, surface tension is surveyed with interfacial tensimeter, with the reaction bulb base not being inoculated with
Matter is control, and the ability of bacterial metabolism production surfactant and acid is represented with surface tension decreasing value and pH value change.
A kind of 6. application method of oil well microbial Wax removing agent according to claim 1, it is characterised in that step（2）
In oil well daily fluid production rate be 2-20m3/ d, 250≤submergence≤400m.
A kind of 7. application method of oil well microbial Wax removing agent according to claim 1, it is characterised in that step（4）
The additions of middle different oil well nutritional agents and add the cycle and be：Water mixing solution salt oil well and not water mixing oil well are daily by 1.0kg battalion
Support after agent is dissolved with water and add oil jacket annular space；Water-sensitive oil well adds 3.0kg nutritional agents in every 3 days, and oil jacket is added after the dissolving of a small amount of water
Annular space；Barreler adds 3.0kg nutritional agents in every 3 days, and microbial bacterial agent 100kg is periodically added according to oil well paraffinication situation；Shake out
Pole Severe well adds 3.0kg nutritional agents in every 3 days, and 100kg-200kg microbial bacterial agents are added according to the oil well paraffinication cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710831661.2A CN107524423A (en) | 2017-09-15 | 2017-09-15 | A kind of application method of oil well microbial Wax removing agent |
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| CN201710831661.2A CN107524423A (en) | 2017-09-15 | 2017-09-15 | A kind of application method of oil well microbial Wax removing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833579A (en) * | 2017-02-06 | 2017-06-13 | 天津中油科远石油工程有限责任公司 | A kind of novel microbial Wax removing agent |
| CN112483045A (en) * | 2020-12-01 | 2021-03-12 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2100575C1 (en) * | 1994-03-14 | 1997-12-27 | Борзенков Игорь Анатольевич | Method of control of paraffin accumulations with the help of microorganisms |
| CN102093868A (en) * | 2011-01-21 | 2011-06-15 | 天津工业生物技术研究所 | Novel microbial wax removal and control system and application thereof |
| CN102287167A (en) * | 2011-07-29 | 2011-12-21 | 中国石油天然气股份有限公司 | Method for removing and preventing wax of mechanical recovery well by microorganism |
| CN106907130A (en) * | 2017-04-25 | 2017-06-30 | 中国石油化工股份有限公司 | A kind of method of Waxy Production Wells microbial single well treatment |
-
2017
- 2017-09-15 CN CN201710831661.2A patent/CN107524423A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2100575C1 (en) * | 1994-03-14 | 1997-12-27 | Борзенков Игорь Анатольевич | Method of control of paraffin accumulations with the help of microorganisms |
| CN102093868A (en) * | 2011-01-21 | 2011-06-15 | 天津工业生物技术研究所 | Novel microbial wax removal and control system and application thereof |
| CN102287167A (en) * | 2011-07-29 | 2011-12-21 | 中国石油天然气股份有限公司 | Method for removing and preventing wax of mechanical recovery well by microorganism |
| CN106907130A (en) * | 2017-04-25 | 2017-06-30 | 中国石油化工股份有限公司 | A kind of method of Waxy Production Wells microbial single well treatment |
Non-Patent Citations (3)
| Title |
|---|
| 吴慧敏等: "AD-4微生物防蜡剂培育与应用", 《石油钻采工艺》 * |
| 易绍金等: "微生物清防蜡技术在新疆油田采油二厂的矿场应用", 《石油天然气学报》 * |
| 王朝晴: "清防蜡技术在江汉五七作业区的应用", 《长江大学学报(自科版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833579A (en) * | 2017-02-06 | 2017-06-13 | 天津中油科远石油工程有限责任公司 | A kind of novel microbial Wax removing agent |
| CN112483045A (en) * | 2020-12-01 | 2021-03-12 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
| CN112483045B (en) * | 2020-12-01 | 2023-04-07 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
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Application publication date: 20171229 |