CN108915637A - A kind of wax-proofing agent being added when pressing crack construction and the preparation method and application thereof - Google Patents
A kind of wax-proofing agent being added when pressing crack construction and the preparation method and application thereof Download PDFInfo
- Publication number
- CN108915637A CN108915637A CN201810738381.1A CN201810738381A CN108915637A CN 108915637 A CN108915637 A CN 108915637A CN 201810738381 A CN201810738381 A CN 201810738381A CN 108915637 A CN108915637 A CN 108915637A
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- Prior art keywords
- wax
- proofing agent
- added
- pressing crack
- crack construction
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The present invention provides the wax-proofing agent being added when a kind of pressing crack construction, is made of the raw material of following weight percent：Odium stearate 10-20%, peregal O-25 10-20%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 10-15%, neopelex ABS 5-10%, sodium ethylene diamine tetracetate 0.5-1%, colophony powder 1-2%, surplus is quartz sand.Meanwhile the present invention also provides the preparation method and application of the wax-proofing agent.Wax-proofing agent provided by the invention does not need individually to construct, be added while pressing crack construction, can go deep into stratum distal end, increase wax-proofing agent in the sphere of action on stratum, effective time is long, can be slow release 2 years or so on 30 DEG C of stratum；Wax control is begun to before crude oil does not generate, has directly been cut off the source of wax generation, has fundamentally been prevented the generation of wax；It is easy for construction, save operating expenses.
Description
Technical field
The invention belongs to technical field of petrochemical industry, and in particular to the wax-proofing agent being added when a kind of pressing crack construction and its preparation
Method and application.
Background technique
Crude oil is constantly in stratum when unquarried, and the temperature and pressure of ambient enviroment is relatively high, Yi Xiegao
Carbon number alkane all with liquid phase dissolved in crude oil, such as：Wax, resin and asphalt.Crude oil in the process of development, from ground layer gap
In flow to shaft bottom, then the process of well head is extracted by pumping unit from shaft bottom, the temperature and pressure of ambient enviroment can be reduced ceaselessly, with
The reduction of pressure, some light components in crude oil can escape in gaseous form, wax crystalline substance molecule can be with crude oil ambient enviroment
Temperature and pressure it is continuous reduction and be precipitated, cause oil well paraffinication phenomenon, cause crude oil itself system unstable, the wax in crude oil
It just will appear crystalline polamer.These wax crystalline substance molecules are ceaselessly deposited on oil pipe tube wall and beam hanger, will result in oil well paraffinication.It is first
First, oil well paraffinication can make the aisle spare of oil pipe and transport pipeline in oil well slowly become smaller, so that blocking oil extraction pipeline, cause
Crude output decline stops production.And oil pipe blocking can promote the resistance of sucker rod, or even damage equipment.To increase pumping unit
Energy consumption, increase cost for oil production.If it is oil reservoir inside wax deposition, it will cause crude oil outflow channel blockage, reduce crude output.
Even more serious situation is to cause beam hanger stuck, and oil well is caused to stop production.
The paraffin content of domestic each large oilfield is very high.According to statistics, the wax content in crude oil of most oil field institutes output reaches
To 20% or so, the paraffin content of some crude oils is even as high as 40%, and the content of wax of 90% or so crude oil that China produces
Amount is 10% or more.During oil extraction, oil well paraffinication brings serious harm to oil extraction and transportation system.Therefore, it is
Guarantee the normal exploitation of crude oil and transport, paraffin removal from oil well, wax control also just become during oil extraction one it is extremely important
Measure.But wax-proofing agent used at present requires individually to construct, the period is long, and operating expenses is higher, and becoming restriction, it is answered
Bottleneck.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides the wax-proofing agent being added when a kind of pressing crack construction, which is not required to
It individually to construct, be added in pressing crack construction, fundamentally prevent the generation of wax.
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：
Odium stearate 10-20%,
Peregal O-25 10-20%,
Sodium sulfate of polyethenoxy ether of fatty alcohol AES 10-15%,
Neopelex ABS 5-10%,
Sodium ethylene diamine tetracetate 0.5-1%,
Colophony powder 1-2%,
Surplus is quartz sand.
Preferably, the quartz sand crosses 70-100 mesh.
The preparation method of above-mentioned wax-proofing agent, includes the following steps：
（1）By odium stearate, peregal O-25, sodium sulfate of polyethenoxy ether of fatty alcohol AES, neopelex ABS, second
Sodium ethylene diamine tetracetate, colophony powder proportionally sequentially add in reaction unit, molten to whole in 80 DEG C of at a temperature of heating stirring
It is spare after solution；
（2）Quartz sand is heated to 50 DEG C while stirring, stops heating, continues to stir, by step under stirring（1）Production
Object is slowly added thereto；
（3）By step（2）Product stir to temperature lower than 30 DEG C, stop stirring；
（4）20-100 mesh is crossed in screening.
Preferably, step（2）Described in be slowly subject to product and do not agglomerate.
The application of above-mentioned wax-proofing agent, the application are：In pressing crack construction, after the completion of preposition liquid pump note, less than 15%
Sand is than being added above-mentioned wax-proofing agent.
Preferably, above-mentioned wax-proofing agent application be specially：
（1）Vehicle, connecting pipeline, pressure testing are set by pressure break design requirement；
（2）Pump pad of frac；
（3）After preposition liquid pump is complete, wax-proofing agent is added in pump note load fluid；
（4）After the completion of wax-proofing agent is added, fracturing propping agents are added；
（5）By normal pressing crack construction until terminating.
Wax-proofing agent provided by the invention is solid particle, odium stearate, sodium sulfate of polyethenoxy ether of fatty alcohol AES and 12
Sodium alkyl benzene sulfonate ABS, to the inhibiting effect of the precipitation of wax crystalline substance molecule, aggregation and deposition, reaches wax control using surfactant
Purpose, peregal O-25 increases the intensity of surfactant and product can be improved in control release time, sodium ethylene diamine tetracetate
Storage stability, rosin can be improved the intensity after product surface solidifies, and quartz sand guarantees intensity, density and the completion of product
The granulation of product, while preventing product from floating on the surface of fracturing blender truck stirring pool in construction.
Advantages of the present invention：
Wax-proofing agent provided by the invention does not need individually to construct, be added while pressing crack construction, can go deep into stratum distal end,
Wax-proofing agent is increased in the sphere of action on stratum, effective time is long, can be slow release 2 years or so on 30 DEG C of stratum；In crude oil
Wax control is begun to before not generating, has directly been cut off the source of wax generation, has fundamentally been prevented the generation of wax；It is easy for construction, section
About operating expenses.
Specific embodiment
Embodiment 1
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：Odium stearate
18%, peregal O-25 15%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 12%, neopelex ABS 10%, second two
Amine tetraacethyl sodium 1%, colophony powder 2% cross the quartz sand 42% of 70-100 mesh；
The preparation method of above-mentioned wax-proofing agent, includes the following steps：
（1）By odium stearate, peregal O-25, sodium sulfate of polyethenoxy ether of fatty alcohol AES, neopelex ABS, second
Sodium ethylene diamine tetracetate, colophony powder proportionally sequentially add in reaction kettle, 80 DEG C at a temperature of heating stirring to whole dissolutions
It is spare afterwards；
（2）Quartz sand is heated to 50 DEG C while stirring in dry-powder mixer, stops heating, continues to stir, in stirring
It is lower by step（1）Product be slowly added thereto, product of being subject to does not agglomerate；
（3）By step（2）Product stir to temperature lower than 30 DEG C, stop stirring；
（4）20-100 mesh is crossed in screening.
Embodiment 2
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：Odium stearate
10%, peregal O-25 10%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 15%, neopelex ABS 10%, second two
Amine tetraacethyl sodium 1%, colophony powder 1% cross the quartz sand 53% of 70-100 mesh；
The preparation method of above-mentioned wax-proofing agent, with embodiment 1.
Embodiment 3
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：Odium stearate
20%, peregal O-25 15%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 15%, neopelex ABS 5%, second two
Amine tetraacethyl sodium 1%, colophony powder 2% cross the quartz sand 42% of 70-100 mesh；
The preparation method of above-mentioned wax-proofing agent, with embodiment 1.
Embodiment 4
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：Odium stearate
15%, peregal O-25 15%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 13%, neopelex ABS 8%, second two
Amine tetraacethyl sodium 0.8%, colophony powder 1.2% cross the quartz sand 47% of 70-100 mesh；
The preparation method of above-mentioned wax-proofing agent, with embodiment 1.
Embodiment 5
The wax-proofing agent being added when a kind of pressing crack construction is made of according to 100% meter the raw material of following weight percent：Odium stearate
15%, peregal O-25 20%, sodium sulfate of polyethenoxy ether of fatty alcohol AES 10%, neopelex ABS 8%, second two
Amine tetraacethyl sodium 0.5%, colophony powder 1.5% cross the quartz sand 45% of 70-100 mesh；
The preparation method of above-mentioned wax-proofing agent, with embodiment 1.
Embodiment 6
The wax-proofing agent that embodiment 5 provides is used to extend oil field oil recovery factory, carries out pressure break wax control institutional operation construction；
It is 6 layers long to extend oil field oil recovery factory G-5 well, permeability 1.3mD, oil layer section 854.2-857.5m porosity 10.5%, contains
Oily saturation degree 38.6%, perforated interval 854.0-856.0m（Penetrate out 2.0m）, without natural production capacity after perforation, since area's wax deposition is serious,
New well occurs as soon as serious wax deposition in 60 days after generally going into operation；
It has particular application as：
（1）Vehicle, connecting pipeline, pressure testing are set by pressure break design requirement；
（2）Pump pad of frac；
（3）After preposition liquid pump is complete, wax-proofing agent is added in pump note load fluid（Wax-proofing agent sand ratio is 10%）；
（4）After the completion of wax-proofing agent is added, fracturing propping agents are added；
（5）By normal pressing crack construction until terminating；
Discharge capacity 2.5m30.5 m of wax-proofing agent is added in/min3, add quartz sand 35m3, carry out pressing crack construction, pressing crack construction pump note program
It is shown in Table 1.
1 G-5 well pressure break wax control institutional operation of table construction pump note program
Oil, first Liquid output 5.7m are seen after pressure after 2 days3/ d, 2.6 t/d of oil-producing have no that wax deposition, correctional effect are obvious for 300 days after pressure.
Embodiment 7
The wax-proofing agent that embodiment 1 provides is used to extend oil field oil recovery factory, carries out pressure break wax control institutional operation construction；
It is 6 layers long to extend oil field oil recovery factory T-508 well, permeability 1.2mD, oil layer section 621.5-627.3m porosity 9.8%, contains
Oily saturation degree 42.3%, perforated interval 621.0-624.0m（Penetrate out 3.0m）, since area's wax deposition is serious, new well generally go into operation after 30
It occurs as soon as serious wax deposition, meanwhile, the well reservoir properties are poor；
It has particular application as：
（1）Vehicle, connecting pipeline, pressure testing are set by pressure break design requirement；
（2）Pump pad of frac；
（3）After preposition liquid pump is complete, wax-proofing agent is added in pump note load fluid（Wax-proofing agent sand ratio is 10%）；
（4）After the completion of wax-proofing agent is added, fracturing propping agents are added；
（5）By normal pressing crack construction until terminating；
Discharge capacity 6m30.8 m of wax-proofing agent is added in/min3, add quartz sand 50m3, pressing crack construction is carried out, pressing crack construction pump note program is shown in
Table 2.
2 T-508 well volume fracturing wax control institutional operation of table construction pump note program
Oil, first Liquid output 4.9m are seen after pressure after 7 days3/ d, 3.2 t/d of oil-producing have no that wax deposition, correctional effect are obvious for 280 days after pressure.
Claims (6)
1. the wax-proofing agent being added when a kind of pressing crack construction, it is characterised in that：According to 100% meter, by the raw material of following weight percent
Composition：
Odium stearate 10-20%,
Peregal O-25 10-20%,
Sodium sulfate of polyethenoxy ether of fatty alcohol AES 10-15%,
Neopelex ABS 5-10%,
Sodium ethylene diamine tetracetate 0.5-1%,
Colophony powder 1-2%,
Surplus is quartz sand.
2. wax-proofing agent according to claim 1, it is characterised in that：The quartz sand crosses 70-100 mesh.
3. the preparation method of wax-proofing agent as claimed in claim 1 or 2, it is characterised in that：Include the following steps：
（1）By odium stearate, peregal O-25, sodium sulfate of polyethenoxy ether of fatty alcohol AES, neopelex ABS, second
Sodium ethylene diamine tetracetate, colophony powder proportionally sequentially add in reaction unit, molten to whole in 80 DEG C of at a temperature of heating stirring
It is spare after solution；
（2）Quartz sand is heated to 50 DEG C while stirring, stops heating, continues to stir, by step under stirring（1）Production
Object is slowly added thereto；
（3）By step（2）Product stir to temperature lower than 30 DEG C, stop stirring；
（4）20-100 mesh is crossed in screening.
4. preparation method according to claim 3, it is characterised in that：Step（2）Described in be slowly subject to product and do not agglomerate.
5. a kind of application of wax-proofing agent, it is characterised in that：The application is：In pressing crack construction, after the completion of preposition liquid pump note, with
Sand less than 15% is than being added wax-proofing agent, wherein the wax-proofing agent is wax-proofing agent as claimed in claim 1 or 2.
6. the application of wax-proofing agent according to claim 5, it is characterised in that：The application is specially：
（1）Vehicle, connecting pipeline, pressure testing are set by pressure break design requirement；
（2）Pump pad of frac；
（3）After preposition liquid pump is complete, wax-proofing agent is added in pump note load fluid；
（4）After the completion of wax-proofing agent is added, fracturing propping agents are added；
（5）By normal pressing crack construction until terminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738381.1A CN108915637B (en) | 2018-07-06 | 2018-07-06 | Wax inhibitor added during fracturing construction and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738381.1A CN108915637B (en) | 2018-07-06 | 2018-07-06 | Wax inhibitor added during fracturing construction and preparation method and application thereof |
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| CN108915637A true CN108915637A (en) | 2018-11-30 |
| CN108915637B CN108915637B (en) | 2020-04-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
| CN110079292A (en) * | 2019-03-22 | 2019-08-02 | 中国石油化工股份有限公司 | High-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluid |
| CN110511732A (en) * | 2019-09-16 | 2019-11-29 | 西南石油大学 | Can in depth at layer depth wax control inhibitor and the preparation method and application thereof |
| CN110982510A (en) * | 2019-11-22 | 2020-04-10 | 中国石油天然气股份有限公司 | Hydraulic fracturing propping agent and preparation method and application thereof |
| CN111963130A (en) * | 2020-09-01 | 2020-11-20 | 中国石油天然气股份有限公司 | Fracturing method capable of maintaining flow conductivity of cracks for long time and application thereof |
| CN113278457A (en) * | 2021-06-28 | 2021-08-20 | 湖北亮绿环保技术有限公司 | Wax remover for rapid treatment of oil and gas fields and preparation method thereof |
| CN113550714A (en) * | 2020-04-26 | 2021-10-26 | 中国石油天然气股份有限公司 | Hydraulic fracturing wax-proofing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
| CN109762545B (en) * | 2019-02-27 | 2021-03-02 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | Oil well shaft deep-acting wax removing and preventing agent and preparation method thereof |
| CN110079292A (en) * | 2019-03-22 | 2019-08-02 | 中国石油化工股份有限公司 | High-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluid |
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| CN110982510A (en) * | 2019-11-22 | 2020-04-10 | 中国石油天然气股份有限公司 | Hydraulic fracturing propping agent and preparation method and application thereof |
| CN110982510B (en) * | 2019-11-22 | 2022-08-05 | 中国石油天然气股份有限公司 | Hydraulic fracturing propping agent and preparation method and application thereof |
| CN113550714A (en) * | 2020-04-26 | 2021-10-26 | 中国石油天然气股份有限公司 | Hydraulic fracturing wax-proofing method |
| CN111963130A (en) * | 2020-09-01 | 2020-11-20 | 中国石油天然气股份有限公司 | Fracturing method capable of maintaining flow conductivity of cracks for long time and application thereof |
| CN113278457A (en) * | 2021-06-28 | 2021-08-20 | 湖北亮绿环保技术有限公司 | Wax remover for rapid treatment of oil and gas fields and preparation method thereof |
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