CN108316903A - A kind of method improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil and its application in thickened oil recovery - Google Patents
A kind of method improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil and its application in thickened oil recovery Download PDFInfo
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- CN108316903A CN108316903A CN201810107153.4A CN201810107153A CN108316903A CN 108316903 A CN108316903 A CN 108316903A CN 201810107153 A CN201810107153 A CN 201810107153A CN 108316903 A CN108316903 A CN 108316903A
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- salinity
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- ions
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- 230000001804 emulsifying effect Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 22
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 84
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 84
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 82
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims abstract description 81
- 125000000129 anionic group Chemical group 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 28
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000011575 calcium Substances 0.000 claims description 22
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 21
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 20
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 19
- 229910052791 calcium Inorganic materials 0.000 claims description 19
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 17
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 17
- 229920000141 poly(maleic anhydride) Polymers 0.000 claims description 11
- 230000007062 hydrolysis Effects 0.000 claims description 10
- 238000006460 hydrolysis reaction Methods 0.000 claims description 10
- 230000001603 reducing effect Effects 0.000 claims description 9
- 239000003208 petroleum Substances 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 239000003921 oil Substances 0.000 description 54
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 46
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 43
- 239000003129 oil well Substances 0.000 description 29
- 239000000243 solution Substances 0.000 description 28
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 25
- 239000012267 brine Substances 0.000 description 23
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 23
- 238000004088 simulation Methods 0.000 description 22
- 239000011777 magnesium Substances 0.000 description 20
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 18
- 229910052749 magnesium Inorganic materials 0.000 description 18
- 230000008859 change Effects 0.000 description 17
- 238000007792 addition Methods 0.000 description 14
- 239000000839 emulsion Substances 0.000 description 12
- 150000001735 carboxylic acids Chemical class 0.000 description 11
- 238000004090 dissolution Methods 0.000 description 11
- 239000003643 water by type Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 229940124274 edetate disodium Drugs 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000003010 ionic group Chemical group 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000158728 Meliaceae Species 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Edible Oils And Fats (AREA)
Abstract
The present invention proposes that a kind of method improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil and its application in thickened oil recovery, this method include that the process of calcium ions and magnesium ions smoke agent for shielding is added into anionic emulsifying pour depressor.When for thickened oil recovery, include the following steps：The water flooding treated in heavy crude producing oil reservoir carries out water sample analysis, obtains the total mol concentration of calcium ions and magnesium ions in the water flooding；To described wait for that anionic emulsifying pour depressor and calcium ions and magnesium ions smoke agent for shielding are added in heavy crude producing oil reservoir；Wherein, the ratio of molar concentration of the calcium ions and magnesium ions smoke agent for shielding in the water flooding for waiting for heavy crude producing oil reservoir and calcium ions and magnesium ions total mol concentration in the water flooding is (1 2):1.This method can improve the resistance to salinity of anionic emulsifying pour depressor, and then obtain the emulsifying pour depressor of not only high temperature resistant but also resistance to high salinity, when being used for thickened oil recovery, can effectively reduce viscosity of thickened oil.
Description
Technical field
The invention belongs to the Technology of Heavy Oil Recovery field more particularly to a kind of sides for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil
Method and its application in thickened oil recovery.
Background technology
Common recovery method when reducing viscosity by emulsifying is thickened oil recovery, due to containing a large amount of water flooding in oil reservoir, in viscous crude
When exploitation, only when having good compatibility between the emulsifying pour depressor of injection and water flooding, emulsification drop can be played
Viscous effect, thus, it is desirable that emulsifying and viscosity-reducing agent for condensed oil has certain resistance to salinity ability.In recent years, with deep-well heavy crude reservoir
Continuous exploitation, there are a large amount of high-temperature oil reservoirs, part reservoir is even up to 300 DEG C in the temperature of partial period, this is required again
Emulsifying and viscosity-reducing agent for condensed oil is resistant to high temperature.
Currently, many scholars of China and foreign countries to the emulsifying pour depressor of not only high temperature resistant but also resistance to high salinity largely grind
Study carefully, it has been investigated that：Anionic emulsifying pour depressor have good high temperature resistance, but its resistance to salinity ability generally compared with
Difference；And nonionic emulsifying pour depressor generally has good resistance to salinity ability, but high temperature resistance is poor.Thus, it grinds at present
System is not only there are mainly two types of the methods of the emulsifying pour depressor of high temperature resistant but also resistance to high salinity：One is use anionic reducing viscosity by emulsifying
Agent and nonionic emulsifying pour depressor compounding, such as：The anionic emulsifying pour depressor such as money Jian Hua, a small amount of inorganic salts, it is non-from
Subtype emulsifying pour depressor and water by a certain percentage, have been mixed to form a kind of emulsifying pour depressor of Compositional type high temperature resistant condition, have been used for
Thermal Recovery For Viscous Oil By Steam, the emulsifying pour depressor viscosity break ratio are up to 99.1%, are resistant to 300 DEG C of high temperature；Another kind is that synthesis is a kind of comprehensive
The novel emulsion thinner of anion and non-ionic group is closed, such as：Qin Bing etc. has synthesized a kind of sulfonic acid, carboxylic acid and polyethers cocondensation
Poly- type emulsifying pour depressor S-5 is resistant to 350 DEG C of superhigh temperature, salt resistance>100 000mg/L (wherein, Ca2+、Mg2+Content is more than
2000mg/L), there is good viscosity reducing effect to super-viscous oils such as triumph, the Liaohe River.
However, two kinds of above-mentioned preparation methods are in thickened oil recovery application, there are still some shortcomings, such as：
(1) preparation method for using anionic emulsifying pour depressor and nonionic emulsifying pour depressor to compound, due to emulsification
Thinner is stronger to the selectivity of viscous crude, and compounding workload is larger, causes its manufacturing cost higher；
(2) the novel emulsion thinner of comprehensive anion and non-ionic group, synthesis cycle time length, by-product are synthesized
More, preparation section complexity, manufacturing cost are also higher.
Therefore, a kind of simpler and lower method of cost how is provided to obtain not only high temperature resistant but also the breast of resistance to high salinity
Change thinner, and then be applied to thickened oil recovery, is a current technical problem for being badly in need of solving.
Invention content
The present invention for the above technical issues, propose it is a kind of improve the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil method and its
Application in thickened oil recovery, this method can improve the resistance to salinity of anionic emulsifying pour depressor, and then obtain both resistance to height
The emulsifying pour depressor of warm and resistance to high salinity can effectively reduce viscosity of thickened oil when being used for thickened oil recovery.
In order to achieve the above object, the technical solution adopted by the present invention is：
The present invention provides a kind of methods improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, including emulsify and drop to anionic
The process of calcium ions and magnesium ions smoke agent for shielding is added in stick.
Preferably, the calcium ions and magnesium ions smoke agent for shielding is selected from disodium ethylene diamine tetraacetate, hydrolysis of polymaleic anhydride, amino three
Any one in methylenephosphonic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid and organophosphor carboxylic acid.
Preferably, the anionic emulsifying pour depressor is selected from neopelex, enuatrol and mahogany acid
Any one in salt.
The present invention also provides the resistance to salinities of raising emulsifying and viscosity-reducing agent for condensed oil described in a kind of any of the above-described technical solution
Application of the method in thickened oil recovery, include the following steps：
It treats water flooding in heavy crude producing oil reservoir and carries out water sample analysis, obtain always rubbing for calcium ions and magnesium ions in the water flooding
That concentration；
To described wait for that anionic emulsifying pour depressor and calcium ions and magnesium ions smoke agent for shielding are added in heavy crude producing oil reservoir；Wherein, institute
State in molar concentration of the calcium ions and magnesium ions smoke agent for shielding in the water flooding for waiting for heavy crude producing oil reservoir and the water flooding calcium and magnesium from
The ratio of sub- total mol concentration is (1-2):1.
Preferably, quality of the anionic emulsifying pour depressor in the water flooding for waiting for heavy crude producing oil reservoir point
Number is 1%.
Compared with prior art, the advantages and positive effects of the present invention are：
1, the method provided by the invention for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, by anionic reducing viscosity by emulsifying
In agent be added calcium ions and magnesium ions smoke agent for shielding, be complexed water flooding in calcium ions and magnesium ions, to enable anionic emulsifying pour depressor with
Stratum compatible is good, effectively increases the resistance to salinity ability of anionic emulsifying pour depressor；
2, the method provided by the invention for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil is easy to operate, at low cost, and is applicable in
It is in extensive range；
3, since anionic emulsifying pour depressor itself has good high temperature resistance, the raising provided through the invention
The method of the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil can further increase its resistance to salinity ability, make single anionic newborn
Not only heatproof can be achieved the effect that but also resistance to salinity by changing thinner；
4, it is provided by the invention improve the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil method in thickened oil recovery in application, can
So that viscous crude is formed the emulsion of oil-in-water type, effectively reduces the viscosity of viscous crude, viscosity break ratio is 99% or more.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
An embodiment of the present invention provides a kind of methods improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, including to anionic
The process of calcium ions and magnesium ions smoke agent for shielding is added in emulsifying pour depressor.It should be noted that the calcium ions and magnesium ions smoke agent for shielding is to refer to
By the smoke agent for shielding for being complexed while covering calcium ion and magnesium ion.Since inventor has found：Cause anionic emulsifying pour depressor
It is the calcium ions and magnesium ions in water flooding the main reason for poor with water flooding compatibility, thus, in the present embodiment, by anion
Calcium ions and magnesium ions smoke agent for shielding is added in type emulsifying pour depressor, the calcium ions and magnesium ions in water flooding are complexed, to make anionic emulsification drop
Stick can be good with stratum compatible, effectively increases the resistance to salinity ability of anionic emulsifying pour depressor.This method is grasped
Make simply, it is at low cost and applied widely.Simultaneously as anionic emulsifying pour depressor itself has good high temperature resistant
Performance, the method provided through the invention can further increase its resistance to salinity ability, so not only high temperature resistant can be obtained but also
The emulsifying pour depressor of resistance to high salinity.
In a preferred embodiment, the calcium ions and magnesium ions smoke agent for shielding is selected from disodium ethylene diamine tetraacetate, hydrolyzed polymaleic anhydride
Any one in acid anhydride, aminotrimethylenephosphonic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid and organophosphor carboxylic acid.In the preferred embodiment, have
Body defines the type of calcium ions and magnesium ions smoke agent for shielding, using disodium ethylene diamine tetraacetate (EDTA), hydrolysis of polymaleic anhydride (HPMA),
Aminotrimethylenephosphonic acid (ATMP), 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) or organophosphor carboxylic acid (PBTCA) are covered as calcium ions and magnesium ions
Agent can obtain best screening effect.Especially, disodium ethylene diamine tetraacetate (EDTA) is cheap and easy to get and nontoxic, green
Colour circle is protected, and is best calcium ions and magnesium ions smoke agent for shielding.It is understood that those skilled in the art can also be according to actual use need
Want, be specifically chosen suitable calcium ions and magnesium ions smoke agent for shielding, if can by water flooding calcium ion and magnesium ion cover.
In further preferred embodiments, the anionic emulsifying pour depressor is selected from neopelex, oleic acid
Any one in sodium and petroleum sulfonate.In the preferred embodiment, anionic reducing viscosity by emulsifying is further specifically defined
The type of agent, this is because using disodium ethylene diamine tetraacetate (EDTA), hydrolysis of polymaleic anhydride (HPMA), three methene phosphine of amino
When sour (ATMP), 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) or organophosphor carboxylic acid (PBTCA) are used as calcium ions and magnesium ions smoke agent for shielding, to dodecane
The resistance to salinity of base benzene sulfonic acid sodium salt, enuatrol or petroleum sulfonate has best improvement effect.It is understood that this field
Technical staff can also be specifically chosen suitable anionic emulsifying pour depressor according to actual needs.
The present invention also provides a kind of sides of the raising resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil described in any of the above-described embodiment
Application of the method in thickened oil recovery, includes the following steps：
S1：The water flooding treated in heavy crude producing oil reservoir carries out water sample analysis, obtains calcium ions and magnesium ions in the water flooding
Total mol concentration；
S2：To described wait for that anionic emulsifying pour depressor and calcium ions and magnesium ions smoke agent for shielding are added in heavy crude producing oil reservoir；Wherein,
Molar concentration of the calcium ions and magnesium ions smoke agent for shielding in the water flooding for waiting for heavy crude producing oil reservoir and calcium and magnesium in the water flooding
The ratio of ion total mol concentration is (1-2):1.
In above application, the total mol concentration of the calcium ions and magnesium ions in water flooding is obtained by water sample analysis, and then can be counted
Calculate the addition of calcium ions and magnesium ions smoke agent for shielding, be added calcium ions and magnesium ions smoke agent for shielding can cover calcium ion in water flooding and magnesium from
Son makes anionic emulsifying pour depressor and water flooding excellent fit 5, ensures anionic emulsifying pour depressor non-inactivation, to play
Reduce the effect of viscosity of thickened oil.It should be noted that working as molar concentration and water flooding of the calcium ions and magnesium ions smoke agent for shielding in water flooding
The ratio of middle calcium ions and magnesium ions total mol concentration is (1-2):When 1, it can ensure the calcium and magnesium that the calcium ions and magnesium ions in water flooding are added into
Ion smoke agent for shielding it is completely obscured fall.
In a preferred embodiment, the anionic emulsifying pour depressor is in the water flooding for waiting for heavy crude producing oil reservoir
Mass fraction be 1%.In the preferred embodiment, the addition of anionic emulsifying pour depressor is specifically defined, the addition
Optimal addn when amount is thickened oil recovery.It is understood that those skilled in the art can also exploit situation according to practical,
Select other suitable additions.
The raising resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil that the embodiment of the present invention provided is introduced in detail in order to become apparent from
Method and its application in thickened oil recovery, are described below in conjunction with specific embodiment.
It should be noted that used in following embodiment simulation brine preparation method for：According to high temperature reducing viscosity by emulsifying
In general technical specifications (Q/SH1020 2193-2013) prepared by the configuration method of simulation brine, and specific formula is as shown in table 1：
Table 1 simulates the composition of brine
Embodiment 1
To disodium ethylene diamine tetraacetate (EDTA) is added in neopelex (SDBS), with the mine of different salinities
Change the resistance to salinity ability of water, simulation brine and CNOOC LD5-2N-2 oil-well strata water verification neopelex
Situation of change, the results are shown in Table 2.Wherein, the addition of disodium ethylene diamine tetraacetate is：Disodium ethylene diamine tetraacetate is in mine
Change the total mol concentration of the molar concentration and wherein calcium ions and magnesium ions in water, simulation brine or CNOOC LD5-2N-2 oil-well strata water
It is identical.
Dissolution phenomenas of the SDBS in different salinity mineralized waters before and after EDTA is added in table 2
As can be seen from Table 2, when SDBS is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this says
Bright SDBS and the mineralized water containing calcium ions and magnesium ions can not good compatibility, SDBS is poor to the resistance to salinity situation of calcium and magnesium.When adding
After entering EDTA, clear transparent solutions can be obtained, are thus illustrated, after EDTA is added, SDBS can be with the mine containing calcium ions and magnesium ions
Change the good compatibility of water, the resistance to salinity ability of SDBS significantly improves.
Embodiment 2
Into enuatrol be added disodium ethylene diamine tetraacetate (EDTA), with the mineralized water of different salinities, simulation brine with
And the situation of change of the resistance to salinity ability of CNOOC LD5-2N-2 oil-well strata water verification enuatrol, the results are shown in Table 3.
Wherein, the addition of disodium ethylene diamine tetraacetate is：Disodium ethylene diamine tetraacetate is in mineralized water, simulation brine or CNOOC LD5-
Molar concentration in 2N-2 oil-well strata water is identical as the total mol concentration of wherein calcium ions and magnesium ions.
Dissolution phenomena of the enuatrol in different salinity mineralized waters before and after EDTA is added in table 3
By table 3 as it can be seen that when enuatrol is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this
Illustrate enuatrol and the mineralized water containing calcium ions and magnesium ions can not good compatibility, enuatrol to the resistance to salinity situation of calcium and magnesium compared with
Difference.After EDTA is added, can obtain clear transparent solutions, thus illustrate, be added EDTA after, enuatrol can with contain calcium and magnesium
The resistance to salinity ability of the good compatibility of mineralized water of ion, enuatrol significantly improves.
Embodiment 3
To hydrolysis of polymaleic anhydride (HPMA) is added in neopelex (SDBS), with simulation brine and CNOOC
LD5-2N-2 oil-well strata water verifies the situation of change of the resistance to salinity ability of neopelex, result such as 4 institute of table
Show.Wherein, the addition of hydrolysis of polymaleic anhydride is：Mole of the hydrolysis of polymaleic anhydride in simulation brine or oil-well strata water
Concentration is identical as the total mol concentration of wherein calcium ions and magnesium ions.
Dissolution phenomenas of the SDBS in different salinity mineralized waters before and after HPMA is added in table 4
By table 4 as it can be seen that when SDBS is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this says
Bright SDBS and the mineralized water containing calcium ions and magnesium ions can not good compatibility, SDBS is poor to the resistance to salinity situation of calcium and magnesium.When adding
After entering HPMA, clear transparent solutions can be obtained, are thus illustrated, after HPMA is added, SDBS can be with the mine containing calcium ions and magnesium ions
Change the good compatibility of water, the resistance to salinity ability of SDBS significantly improves.
Embodiment 4
Hydrolysis of polymaleic anhydride (HPMA) is added into enuatrol, with simulation brine and CNOOC LD5-2N-2 oil-well stratas
Water verifies the situation of change of the resistance to salinity ability of enuatrol, and the results are shown in Table 5.Wherein, hydrolysis of polymaleic anhydride plus
Entering amount is：The total moles of the hydrolysis of polymaleic anhydride molar concentration in simulation brine or oil-well strata water and wherein calcium ions and magnesium ions
Concentration is identical.
Dissolution phenomena of the enuatrol in different salinity mineralized waters before and after HPMA is added in table 5
By table 5 as it can be seen that when enuatrol is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this
Illustrate enuatrol and the mineralized water containing calcium ions and magnesium ions can not good compatibility, enuatrol to the resistance to salinity situation of calcium and magnesium compared with
Difference.After HPMA is added, can obtain clear transparent solutions, thus illustrate, be added HPMA after, enuatrol can with contain calcium and magnesium
The resistance to salinity ability of the good compatibility of mineralized water of ion, enuatrol significantly improves.
Embodiment 5
To aminotrimethylenephosphonic acid (ATMP) is added in neopelex (SDBS), with simulation brine and CNOOC
LD5-2N-2 oil-well strata water verifies the situation of change of the resistance to salinity ability of neopelex, result such as 6 institute of table
Show.Wherein, the addition of aminotrimethylenephosphonic acid is：Mole of the aminotrimethylenephosphonic acid in simulation brine or oil-well strata water
Concentration is identical as the total mol concentration of wherein calcium ions and magnesium ions.
Dissolution phenomenas of the SDBS in different salinity mineralized waters before and after ATMP is added in table 6
By table 6 as it can be seen that when SDBS is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this says
Bright SDBS and the mineralized water containing calcium ions and magnesium ions can not good compatibility, SDBS is poor to the resistance to salinity situation of calcium and magnesium.When adding
After entering ATMP, clear transparent solutions can be obtained, are thus illustrated, after ATMP is added, SDBS can be with the mine containing calcium ions and magnesium ions
Change the good compatibility of water, the resistance to salinity ability of SDBS significantly improves.
Embodiment 6
Aminotrimethylenephosphonic acid (ATMP) is added into enuatrol, with simulation brine and CNOOC LD5-2N-2 oil-well stratas
Water verifies the situation of change of the resistance to salinity ability of enuatrol, and the results are shown in Table 7.Wherein, aminotrimethylenephosphonic acid plus
Entering amount is：The total moles of the aminotrimethylenephosphonic acid molar concentration in simulation brine or oil-well strata water and wherein calcium ions and magnesium ions
Concentration is identical.
Dissolution phenomena of the enuatrol in different salinity mineralized waters before and after ATMP is added in table 7
By table 7 as it can be seen that when enuatrol is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this
Illustrate enuatrol and the mineralized water containing calcium ions and magnesium ions can not good compatibility, enuatrol to the resistance to salinity situation of calcium and magnesium compared with
Difference.After ATMP is added, can obtain clear transparent solutions, thus illustrate, be added ATMP after, enuatrol can with contain calcium and magnesium
The resistance to salinity ability of the good compatibility of mineralized water of ion, enuatrol significantly improves.
Embodiment 7
To 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) is added in neopelex (SDBS), with simulation brine and CNOOC
LD5-2N-2 oil-well strata water verifies the situation of change of the resistance to salinity ability of neopelex, result such as 8 institute of table
Show.Wherein, the addition of 1-hydroxy ethylidene-1,1-diphosphonic acid is：Mole of the 1-hydroxy ethylidene-1,1-diphosphonic acid in simulation brine or oil-well strata water
Concentration is identical as the total mol concentration of wherein calcium ions and magnesium ions.
Dissolution phenomenas of the SDBS in different salinity mineralized waters before and after HEDP is added in table 8
By table 8 as it can be seen that when SDBS is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this says
Bright SDBS and the mineralized water containing calcium ions and magnesium ions can not good compatibility, SDBS is poor to the resistance to salinity situation of calcium and magnesium.When adding
After entering HEDP, clear transparent solutions can be obtained, are thus illustrated, after HEDP is added, SDBS can be with the mine containing calcium ions and magnesium ions
Change the good compatibility of water, the resistance to salinity ability of SDBS significantly improves.
Embodiment 8
1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) is added into enuatrol, with simulation brine and CNOOC LD5-2N-2 oil-well stratas
Water verifies the situation of change of the resistance to salinity ability of enuatrol, and the results are shown in Table 9.Wherein, 1-hydroxy ethylidene-1,1-diphosphonic acid plus
Entering amount is：The total moles of the 1-hydroxy ethylidene-1,1-diphosphonic acid molar concentration in simulation brine or oil-well strata water and wherein calcium ions and magnesium ions
Concentration is identical.
Dissolution phenomena of the enuatrol in different salinity mineralized waters before and after HEDP is added in table 9
By table 9 as it can be seen that when enuatrol is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this
Illustrate enuatrol and the mineralized water containing calcium ions and magnesium ions can not good compatibility, enuatrol to the resistance to salinity situation of calcium and magnesium compared with
Difference.After HEDP is added, can obtain clear transparent solutions, thus illustrate, be added HEDP after, enuatrol can with contain calcium and magnesium
The resistance to salinity ability of the good compatibility of mineralized water of ion, enuatrol significantly improves.
Embodiment 9
To organophosphor carboxylic acid (PBTCA) is added in neopelex (SDBS), with simulation brine and CNOOC
LD5-2N-2 oil-well strata water verifies the situation of change of the resistance to salinity ability of neopelex, result such as 10 institute of table
Show.Wherein, the addition of organophosphor carboxylic acid is：Organophosphor carboxylic acid simulation brine or oil-well strata water in molar concentration and its
The total mol concentration of middle calcium ions and magnesium ions is identical.
Dissolution phenomenas of the SDBS in different salinity mineralized waters before and after PBTCA is added in table 10
By table 10 as it can be seen that when SDBS is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this says
Bright SDBS and the mineralized water containing calcium ions and magnesium ions can not good compatibility, SDBS is poor to the resistance to salinity situation of calcium and magnesium.When adding
After entering PBTCA, can obtain clear transparent solutions, thus illustrate, be added PBTCA after, SDBS can with contain calcium ions and magnesium ions
The resistance to salinity ability of the good compatibility of mineralized water, SDBS significantly improves.
Embodiment 10
Organophosphor carboxylic acid (PBTCA) is added into enuatrol, with simulation brine and CNOOC LD5-2N-2 oil-well strata water
The situation of change of the resistance to salinity ability of enuatrol is verified, result is as shown in table 11.Wherein, the addition of organophosphor carboxylic acid
For：The total mol concentration phase of molar concentration and wherein calcium ions and magnesium ions of the organophosphor carboxylic acid in simulation brine or oil-well strata water
Together.
Dissolution phenomena of the enuatrol in different salinity mineralized waters before and after PBTCA is added in table 11
By table 11 as it can be seen that when enuatrol is dissolved in the mineralized water containing calcium ions and magnesium ions, clear transparent solutions are unable to get, this
Illustrate enuatrol and the mineralized water containing calcium ions and magnesium ions can not good compatibility, enuatrol to the resistance to salinity situation of calcium and magnesium compared with
Difference.After PBTCA is added, can obtain clear transparent solutions, thus illustrate, be added PBTCA after, enuatrol can with contain calcium
The resistance to salinity ability of the good compatibility of mineralized water of magnesium ion, enuatrol significantly improves.
In the following, with neopelex (SDBS) for anionic emulsifying pour depressor, disodium ethylene diamine tetraacetate
(EDTA) it is calcium ions and magnesium ions smoke agent for shielding, illustrates the method provided by the invention for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil in viscous crude
Application in exploitation.
Embodiment 11
(1) water sample analysis is carried out to the water flooding in CNOOC LD5-2N-2 oil wells, analysis result is as shown in table 12, through changing
It is 6.536 × 10 to calculate and obtain the total mol concentration of calcium ions and magnesium ions in CNOOC LD5-2N-2 oil-well strata water-2mol/L。
The water flooding water sample analysis result of 12 CNOOC LD5-2N-2 oil wells of table
(2) it to described waits for that neopelex (SDBS) and disodium ethylene diamine tetraacetate are added in heavy crude producing oil reservoir
(EDTA)；Wherein, molar concentration of the disodium ethylene diamine tetraacetate (EDTA) in water flooding is 6.536 × 10-2Mol/L, i.e. second
The ratio of calcium ions and magnesium ions total mol concentration is in molar concentration and water flooding of the edetate disodium (EDTA) in water flooding
1：1(nEDTA：nCa+Mg=1：1)；Mass fraction of the neopelex (SDBS) in water flooding is 1%.
Embodiment 12
(1) water sample analysis is carried out to the water flooding in CNOOC LD5-2N-2 oil wells, analysis result is as shown in table 12, through changing
It is 6.536 × 10 to calculate and obtain the total mol concentration of calcium ions and magnesium ions in CNOOC LD5-2N-2 oil-well strata water-2mol/L。
(2) neopelex (SDBS) and disodium ethylene diamine tetraacetate are added into the band heavy crude producing oil reservoir
(EDTA)；Wherein, molar concentration of the disodium ethylene diamine tetraacetate (EDTA) in water flooding is 1.307 × 10-1Mol/L, i.e. second
The ratio of calcium ions and magnesium ions total mol concentration is in molar concentration and water flooding of the edetate disodium (EDTA) in water flooding
2：1(nEDTA：nCa+Mg=2：1)；Mass fraction of the neopelex (SDBS) in water flooding is 1%.
The verification of resistance to salinity situation
After the EDTA of different proportion is added into CNOOC LD5-2N-2 oil-well strata water, the dissolution phenomena of SDBS is observed,
Its result is as shown in table 13.
13 resistance to salinity test result of table
As shown in Table 13, calcium ions and magnesium ions total moles are dense in the molar concentration and water flooding as the EDTA of addition in water flooding
The ratio of degree is 1:1 or 2:When 1, clear transparent solutions can be obtained, are thus illustrated：In embodiment 11 and embodiment 12,
SDBS can be with the good compatibility of CNOOC LD5-2N-2 oil-well strata water.
The verification of reducing thick oil viscosity effect
The viscous crude of embodiment 11 and embodiment 12 is dropped according to thick-oil emulsified adhesive-reducing standard (Q/SH1020 1519-2013)
Viscous effect is verified.The specific steps are：It is 1% that SDBS, which is configured to mass fraction, with CNOOC LD5-2N-2 oil-well stratas water
Solution, after the EDTA of different proportion is added, be uniformly mixed with viscous crude, obtain viscous oil emulsion, wherein viscous crude and configured
The mass ratio of SDBS and EDTA solution is 70:30.Viscous oil emulsion is placed in constant temperature 1h at 50 ± 1 DEG C, is turned with 250r/min
After speed stirring 2min, measures viscosity, mu of the viscous oil emulsion at 50 ± 1 DEG C rapidly with rotational viscometer, calculate corresponding viscosity reduction
Rate, result of calculation are as shown in table 14.Wherein, the formula for calculating viscosity break ratio is as follows：
Wherein, f is viscosity break ratio；μ0For viscous crude at 50 ± 1 DEG C the viscosity of itself, value 7650mPas；μ be
The viscosity of the viscous oil emulsion measured at 50 ± 1 DEG C.
The viscosity break ratio of 14 viscous crude of table and the average surface tension of viscous oil emulsion
As shown in Table 14, the method provided by the invention for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil is answered in thickened oil recovery
Used time can make viscous crude form the emulsion of oil-in-water type, effectively reduce the viscosity of viscous crude, viscosity break ratio is 99% or more.
Numerous studies show interfacial tension is the important indicator whether oil-in-water emulsion that reaction is formed is stablized, thus,
The average surface tension of viscous oil emulsion is determined, result is as shown in table 14.By table 14 as it can be seen that the addition of EDTA
So that the interfacial tension of the emulsion system of calcic magnesium ion is kept smaller numerical value, is conducive to the stability of viscous oil emulsion.
Heat resistance is verified
SDBS is configured to the solution that mass fraction is 1% with CNOOC LD5-2N-2 oil-well stratas water, is added not year-on-year
After the EDTA of example, it is put into autoclave interior sealing, then, autoclave is put into 300 DEG C of Muffle furnace high-temperature and is burnt
For 24 hours, kettle is opened after Temperature fall, pours out solution, observation solution character variation, and measure its viscosity reducing effect to viscous crude, as a result such as
Shown in table 15.
15 heat resistance test result of table
As shown in Table 15, after 300 DEG C of high-temperature process, the addition of EDTA does not influence anionic emulsifying pour depressor
The original heat-resisting abilities of SDBS.
Claims (5)
1. a kind of method improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, it is characterised in that：Including to anionic reducing viscosity by emulsifying
The process of calcium ions and magnesium ions smoke agent for shielding is added in agent.
2. the method according to claim 1 for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, it is characterised in that：The calcium and magnesium
Ion smoke agent for shielding be selected from disodium ethylene diamine tetraacetate, hydrolysis of polymaleic anhydride, aminotrimethylenephosphonic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid and
Any one in organophosphor carboxylic acid.
3. the method according to claim 2 for improving the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil, it is characterised in that：It is described it is cloudy from
Any one of subtype emulsifying pour depressor in neopelex, enuatrol and petroleum sulfonate.
4. claim 1-3 any one of them improves method the answering in thickened oil recovery of the resistance to salinity of emulsifying and viscosity-reducing agent for condensed oil
With, which is characterized in that include the following steps：
The water flooding treated in heavy crude producing oil reservoir carries out water sample analysis, and the total moles for obtaining calcium ions and magnesium ions in the water flooding are dense
Degree；
To described wait for that anionic emulsifying pour depressor and calcium ions and magnesium ions smoke agent for shielding are added in heavy crude producing oil reservoir；Wherein, the calcium
Molar concentration of the magnesium ion smoke agent for shielding in the water flooding for waiting for heavy crude producing oil reservoir and calcium ions and magnesium ions in the water flooding are total
The ratio of molar concentration is (1-2):1.
5. application according to claim 4, it is characterised in that：The anionic emulsifying pour depressor it is described wait exploiting it is thick
Mass fraction in the water flooding of oil reservoir is 1%.
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