CN105623637A - Alkali-free working fluid protection system and usage method thereof - Google Patents
Alkali-free working fluid protection system and usage method thereof Download PDFInfo
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- CN105623637A CN105623637A CN201410645325.5A CN201410645325A CN105623637A CN 105623637 A CN105623637 A CN 105623637A CN 201410645325 A CN201410645325 A CN 201410645325A CN 105623637 A CN105623637 A CN 105623637A
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Abstract
The invention provides an alkali-free working fluid protection system and a usage method thereof. The alkali-free working fluid protection system comprises the following raw materials by mass ratio: 3-6 parts of zwitterionic Gemini surfactants, 1-3 parts of a nonionic surfactant, and 30-50 parts of an auxiliary agent. While in use, the alkali-free working fluid protection system and working fluid at temperature of 40-90 DEG C are uniformly mixed according to a mass ratio being 1:5-8, and then a mixture enters into a well. The alkali-free working fluid protection system is suitable for low-permeability oil reservoir working.
Description
Technical field:
The present invention is applied to oil reservoir field of operation.
Background technology:
Along with the large-scale development of oil, the many middle and high infiltration oil reservoirs of China come into high water cut rate, the Zeng You main force therefrom high permeability reservoir to the oil reservoir transfer such as hypotonic, unconventional hypotonic, special. LOW PERMEABILITY RESERVOIR refers to that reservoir air permeability is 10��50 �� 10-3��m2Between a class oil reservoir, LOW PERMEABILITY RESERVOIR is less due to its pore throat diameter, causes the gap that its reservoir capillary force exists in magnitude compared with middle and high infiltration oil reservoir. The operation liquid when operation is once leakage, and the nearly well band caused pollutes and is difficult to by clear-cutting forestland, and general protection liquid effect is also undesirable, goes to process only by means such as later stage acidifying, crowded de-plugging systems, and economic cost is higher, and effect is undesirable.
Summary of the invention:
It is contemplated that overcome the deficiencies in the prior art, one of purpose is to provide and a kind of can greatly reduce the working fluid injury to reservoir, it is to avoid reservoir is caused the alkali-free working fluid protection system of secondary pollution by working fluid; The two of purpose are to provide the using method of this protection system.
An object of the present invention can realize by following technical solution in measure:
This alkali-free working fluid protection system is made up of the raw material of following proportion by weight:
Amphoteric ionic Gemini class surfactant 3��6
Nonionic surfactant 1��3
Auxiliary agent 30��50.
An object of the present invention realizes also by following technical scheme measure:
Described amphoteric ionic Gemini class surfactant is:
Alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 12��16; Or
Alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -], the carbon number of the alkyl R in formula is 12��16; Or
Alkyl dimethyl azochlorosulfonate propyl lycine [RN+ (CH3)2CH2CH2CH2SO3 -], the carbon number of the alkyl R in formula is 12��16.
Described nonionic surfactant is alkyl polyglucoside or fluorine carbon nonionic surfactant.
Described auxiliary agent is ethylene glycol, ethylene glycol monobutyl ether (EGMBE), propanol or isopropanol.
Described amphoteric ionic Gemini class surfactant is 4.5��5 mass parts.
Described nonionic surfactant is 2��2.5 mass parts.
Described auxiliary agent is 40��45 mass parts.
The two of the purpose of the present invention can realize by following technical solution in measure:
When routine work uses: working fluid needs according to reservoir condition fine filtering; guarantee the qualifieds such as working fluid solid concentration; and working fluid temperature is between 40 DEG C��90 DEG C; prevent fracturing fluid from reservoir being caused " cold damage "; then after protecting system to mix with 40 DEG C��90 DEG C working fluids by 1:5��8 proportion by weight, stir the alkali-free working fluid of the present invention; well can be entered use, need not the row of returning can drive a well normal operation after operation.
When the alkali-free working fluid protection system using the present invention carries out operation, it is necessary to collect geology and the characteristic of fluid data of oil well, determine the temperature of working fluid according to the practical situation of construction well, thus proposing scheme more targetedly as far as possible.
The invention have the advantages that
1. used in the present invention enter well protection liquid system there is relatively low oil water interfacial tension: at 40 DEG C, 0.05%��0.1% working concentration (distilled water preparation) can make oil-water two-phase interfaces tension force reach 10-2��10-3MN/m rank, is substantially reduced the working fluid injury to reservoir.
2. auxiliary agent used in the present invention is ethylene glycol or ethylene glycol monobutyl ether (EGMBE) or propanol or isopropanol, it is possible to makes water-oil phase mixed phase, reduces capillary force effect, improves leakage aqueous phase and return row's efficiency.
3. used in the present invention enter well protection liquid system using method require that into well temperature be 40 DEG C��90 DEG C, it is possible to avoid working fluid that reservoir is caused secondary pollution, as: low temperature working fluid makes heavy component in crude oil precipitate out blocking reservoir etc.
4. the working fluid protection system biodegradation intensity of the present invention is high, reduces the pollution to environment.
5. the working fluid protection system of the present invention makes near wellbore zone reservoir form oiliness moistening partially in closely, and raising aqueous phase returns row and leads, and improves oleic permeability.
Detailed description of the invention:
Embodiment 1:
Take the alkyl dimethyl phosphate ester glycine betaine [RN+ (CH of 6 mass parts3)2CH2CH(OH)CH2HPO4 -], the alkyl glucoside surfactant that carbon number is 12,1 mass parts of the alkyl R in formula and the ethylene glycol of 50 mass parts mix, and obtain alkali-free working fluid protection system.
The using method of this alkali-free working fluid protection system is first to protect system according to alkali-free working fluid: the working fluid of 40 DEG C=1:8 proportion by weight mixing, then enters well.
Embodiment 2:
Take the alkyl dimethyl phosphate ester glycine betaine [RN+ (CH of 3 mass parts3)2CH2CH(OH)CH2HPO4 -], the alkyl glucoside surfactant that carbon number is 16,3 mass parts of the alkyl R in formula and the ethylene glycol of 30 mass parts mix, and obtain alkali-free working fluid protection system.
The using method of this alkali-free working fluid protection system is first to protect system according to alkali-free working fluid: the working fluid of 90 DEG C=1:6 proportion by weight mixing, then enters well.
Embodiment 3:
Take the alkyl dimethyl phosphate ester glycine betaine [RN+ (CH of 4.5 mass parts3)2CH2CH(OH)CH2HPO4 -], the alkyl glucoside surfactant that carbon number is 12,2.5 mass parts of the alkyl R in formula and the ethylene glycol of 40 mass parts mix, and obtain alkali-free working fluid protection system.
The using method of this alkali-free working fluid protection system is first to protect system according to alkali-free working fluid: the working fluid of 40 DEG C=1:8 proportion by weight mixing, then enters well.
Embodiment 4:
Take the alkyl dimethyl phosphate ester glycine betaine [RN+ (CH of 5 mass parts3)2CH2CH(OH)CH2HPO4 -], the alkyl glucoside surfactant that carbon number is 16,2 mass parts of the alkyl R in formula and the ethylene glycol of 45 mass parts mix, and obtain alkali-free working fluid protection system.
The using method of this alkali-free working fluid protection system is first to protect system according to alkali-free working fluid: the working fluid of 90 DEG C=1:6 proportion by weight mixing, then enters well.
Embodiment 5:
With alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 12) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 16, and all the other are respectively with embodiment 1-4.
Embodiment 6:
With alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 16) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 12, and all the other are respectively with embodiment 1-4.
Embodiment 7:
With alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 12) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 16, and all the other are respectively with embodiment 1-4.
Embodiment 8:
With alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 16) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 12, and all the other are respectively with embodiment 1-4.
Embodiment 9:
With alkyl dimethyl azochlorosulfonate propyl lycine [RN+ (CH3)2CH2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 12) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 16, and all the other are respectively with embodiment 1-4.
Embodiment 10:
With alkyl dimethyl azochlorosulfonate propyl lycine [RN+ (CH3)2CH2CH2CH2SO3 -] (carbon number of the alkyl R in formula is 16) replacement alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 12, and all the other are respectively with embodiment 1-4.
Embodiment 11:
Replacing alkyl glucoside surfactant with fluorine carbon nonionic surfactant, all the other are respectively with embodiment 1-10.
Embodiment 12:
Spent glycol monobutyl ether replaces ethylene glycol, and all the other are respectively with embodiment 1-11.
Embodiment 13:
Replacing ethylene glycol with propanol, all the other are respectively with embodiment 1-11.
Embodiment 14:
Replacing ethylene glycol with isopropanol, all the other are respectively with embodiment 1-11.
Embodiment 15:
Spent glycol monobutyl ether replaces ethylene glycol, and all the other are respectively with embodiment 1-11.
Claims (8)
1. an alkali-free working fluid protection system, it is characterised in that this alkali-free working fluid protection system is made up of the raw material of following proportion by weight:
Amphoteric ionic Gemini class surfactant 3��6
Nonionic surfactant 1��3
Auxiliary agent 30��50.
2. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described amphoteric ionic Gemini class surfactant is:
Alkyl dimethyl phosphate ester glycine betaine [RN+ (CH3)2CH2CH(OH)CH2HPO4 -], the carbon number of the alkyl R in formula is 12��16; Or
Alkyl dimethyl sulfoethyl glycine betaine [RN+ (CH3)2CH2CH2SO3 -], the carbon number of the alkyl R in formula is 12��16; Or
Alkyl dimethyl azochlorosulfonate propyl lycine [RN+ (CH3)2CH2CH2CH2SO3 -], the carbon number of the alkyl R in formula is 12��16.
3. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described nonionic surfactant is alkyl polyglucoside or fluorine carbon nonionic surfactant.
4. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described auxiliary agent is ethylene glycol, ethylene glycol monobutyl ether (EGMBE), propanol or isopropanol.
5. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described amphoteric ionic Gemini class surfactant is 4.5��5 mass parts.
6. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described nonionic surfactant is 2��2.5 mass parts.
7. a kind of alkali-free working fluid protection system according to claim 1, it is characterised in that described auxiliary agent is 40��45 mass parts.
8. the using method of the alkali-free working fluid protection system described in a claim 1, it is characterised in that protect system according to alkali-free working fluid: the working fluid of 40 DEG C��90 DEG C=1:5��8 proportion by weight mixing, enter well.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106190109A (en) * | 2016-07-01 | 2016-12-07 | 深圳市亚辉龙生物科技股份有限公司 | Chemiluminescence intensifier and chemiluminescence immune detection reagent kit |
| CN110003879A (en) * | 2019-04-26 | 2019-07-12 | 成都劳恩普斯科技有限公司 | A kind of fracturing fluid liquid nano disrupting agent and preparation method thereof |
| US10745425B2 (en) | 2016-07-01 | 2020-08-18 | Shenzhen Yhlo Biotech Co., Ltd. | Chemiluminescence enhancer and chemiluminescence immunodetection kit |
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| CN101056959A (en) * | 2004-11-15 | 2007-10-17 | 罗迪亚公司 | Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance |
| CN102020980A (en) * | 2009-09-16 | 2011-04-20 | 中国海洋石油总公司 | Composition used for preventing formation water lock and application thereof |
| CN103865509A (en) * | 2014-03-07 | 2014-06-18 | 中国石油大学(华东) | Long-acting mixed fluorocarbon surfactant treating agent for improving condensate gas reservoir recovery efficiency and application of mixed fluorocarbon surfactant treating agent |
| WO2014167375A1 (en) * | 2013-04-09 | 2014-10-16 | Services Petroliers Schlumberger | Composition and methods for completing subterranean wells |
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2014
- 2014-11-10 CN CN201410645325.5A patent/CN105623637A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056959A (en) * | 2004-11-15 | 2007-10-17 | 罗迪亚公司 | Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance |
| CN102020980A (en) * | 2009-09-16 | 2011-04-20 | 中国海洋石油总公司 | Composition used for preventing formation water lock and application thereof |
| WO2014167375A1 (en) * | 2013-04-09 | 2014-10-16 | Services Petroliers Schlumberger | Composition and methods for completing subterranean wells |
| CN103865509A (en) * | 2014-03-07 | 2014-06-18 | 中国石油大学(华东) | Long-acting mixed fluorocarbon surfactant treating agent for improving condensate gas reservoir recovery efficiency and application of mixed fluorocarbon surfactant treating agent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106190109A (en) * | 2016-07-01 | 2016-12-07 | 深圳市亚辉龙生物科技股份有限公司 | Chemiluminescence intensifier and chemiluminescence immune detection reagent kit |
| US10745425B2 (en) | 2016-07-01 | 2020-08-18 | Shenzhen Yhlo Biotech Co., Ltd. | Chemiluminescence enhancer and chemiluminescence immunodetection kit |
| CN110003879A (en) * | 2019-04-26 | 2019-07-12 | 成都劳恩普斯科技有限公司 | A kind of fracturing fluid liquid nano disrupting agent and preparation method thereof |
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