CN102220119B - Oil displacing method for reservoirs with high temperature and salinity - Google Patents
Oil displacing method for reservoirs with high temperature and salinity Download PDFInfo
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Abstract
The invention relates to an oil displacing method for reservoirs with high temperature and salinity, and mainly solves the problems that the oil displacing agent containing a surfactant in the prior art has poor displacement efficiency, high use concentration and corrosion and scale damage caused by bases in ASP (alkali surfactant polymer ) flooding to the formation and oil wells under the conditions of high temperature and salinity. Through the oil displacing method for reservoirs with high temperature and salinity provided by the invention, the crude oil in cores is fully displaced by contacting the underground dehydrated crude oil with a oil displacing composition under the formation water conditions of the oil displacing temperature greater than or equal to 85 DEG C, the total mineralization degree greater than or equal to 16000 mg/L and the total content of Ca<2+> and Mg<2+> greater than or equal to 450 mg/L, wherein the oil displacing composition comprises the following components in percentage by weight: (1) 0.01-5.0% of N,N-bisfatty acyl-diamine-dipropionate-dipolyoxyethylene ether dicarboxylate; (2) 0.01-3.0% a polymer; and (3) 92.0-99.98% of the formation water. The oil displacing method provided by the invention can solve the above problems in a better manner and can be used in tertiary oil recovery production of an oilfield.
Description
Technical field
The present invention relates to a kind of flooding method for high temperature and high salt oil deposit.
Background technology
Along with socioeconomic development, people are to the continuous increase of petroleum demand amount and the minimizing of prospective oil, and oil is just becoming more and more valuable as non-renewable resource.The problem that faces has one, and imbalance between supply and demand is outstanding, and the petroleum demand amount is more large, and find is fewer and feweri; Two, also left in exhausted oil reservoir have a substantial oil.Primary oil recovery (POR) but the underground crude oil of extraction 10～25%, secondary oil recovery (SOR) but the underground crude oil of extraction 15～25%, i.e. a primary oil recovery and secondary oil recovery extraction 25～50% underground crude oil.In order to guarantee oil supply steady in a long-term, to satisfy human wants, must research and development improve petroleum recovery technology, tertiary oil recovery (EOR) can make oil recovery factor improve 6～20% by the intensified oil reduction measure again, and is even more.
Chemical flooding is an important method that improves recovery ratio.Surfactant flooding is considered to improve by a relatively large margin a kind of chemical agent of recovery ratio, applied widely, tool development prospect.No matter tensio-active agent is as host or as the auxiliary agent displacement of reservoir oil, all plays immeasurable effect to increasing substantially recovery ratio.Polymer displacement of reservoir oil tech is a kind of method of important raising oil recovery, compares with general water drive, and polymer flooding can accelerate oil recovery process, improves economic benefit, and Processes and apparatus is simple, cost is lower.As an important technology in chemical flooding, the ASP Oil-Displacing Technology that polymkeric substance, tensio-active agent and alkali form has carried out some field tests in China and foreign countries, has obtained good oil displacement efficiency.But the adding of alkali cause occurring in field test the problems such as the fouling of producing well pit shaft is serious, Produced Liquid difficult treatment, make the application prospect of ASP Oil-Displacing Technology allow of no optimist.By contrast, do not use alkali in the binary combination flooding formula that polymkeric substance and tensio-active agent form, the mining site operability is stronger, thereby is subject to the approval in oil field.But due to need not any alkali, crude oil PetroChina Company Limited. acids active substance can not be fully used, so that research and development have novel surfactant and an alkali-free binary combination flooding formula of high surface more is imperative.
The Surfactant Industry product of external used for tertiary oil recovery mainly contains two large classes: the one, and sulfonated petro-leum is main tensio-active agent, the 2nd, alkylbenzene sulfonate is main tensio-active agent, this two classes tensio-active agent raw material is all taken from crude oil, raw material sources are wide, quantity is large, thereby are also the tensio-active agents of external tertiary oil recovery consumption maximum.Because sulfonate surfactant is anionic, it and the divalent cation (Ca in local water
2+, Mg
2+Deng) can precipitate, work as Ca
2+, Mg
2+Just lose oil displacement efficiency when surpassing 300 μ g/g.For this reason, also be fit to high saliferous, high Ca in continual exploitation research abroad
2+, Mg
2+The tensio-active agent that the ion stratum is used comprises the research of multi-functional tensio-active agent, Gemini surface active agent and sacrifice agent, and pays attention to the composition research of various tensio-active agents.
the anion-nonionic amphoterics is one of focus of tertiary oil recovery (EOR) area research in recent years always, owing in its molecular structure, two kinds of non-ionic groups of different nature and anionic group being designed in same surfactant molecule, make it have the advantage of negatively charged ion and nonionogenic tenside concurrently, have complementary advantages, excellent property, therefore shown good application prospect, especially the binary combination flooding system that exists for alkali-free, due to the obstruction of not only having avoided oil reservoir that there is no alkali, the problem such as fouling and corrosion, and can form ultra low interfacial tension with crude oil.In recent years, because Shuangzi (Gemini) tensio-active agent is by two hydrophilic radicals, two hydrophobic groupings and is connected and connects a base key and close the special construction compound that forms, has more good performance than conventional surfactant, make it have ultra low interfacial tension, low micelle-forming concentration, low Kraff point, good lime soap dispersing power, good a series of peculiar properties such as wettability, thereby cause great concern.Gemini tensio-active agent with interface performance and rheological is expected to replace the alkali in the ternary composite driving formula, under rational formula system, finally realizes binary displacement system, for the chemical flooding in oil field is opened up new approach.
In the patent application at beginning of the thirties late 1920s, Degroot (De Groot) just once proposed the recovery ratio that the water soluble surfactant active helps to improve oil.
At present, the main Gemini surface active agent of domestic research and development is mainly the positively charged ion double quaternary ammonium salt type, as Chinese patent CN 1528853, CN 1817431, CN 1066137 etc. reported in succession that the bisamide type is cationic, fluorine-containing cationic type and contain the pyridyl cation Gemini surfactant.The absorption loss is large, the high in cost of production shortcoming because positively charged ion has, the research and development of anionic and non-ionic type Gemini surface active agent have in recent years also obtained increasing attention, have reported the synthetic of the asymmetric Shuangzi of a kind of negatively charged ion as Chinese patent CN 101073757.And to have salt tolerance poor due to aniorfic surfactant, and non-ionic type has the poor shortcoming of temperature tolerance, makes these products can't being applied at high temperature and high salt oil deposit.
In addition, in existing ternary composite oil-displacing system, the alkali that contains high density, as sodium hydroxide, sodium carbonate etc., in use, to bringing huge injury in stratum and oil well etc., the tensio-active agent that uses is difficult for being biodegradable, and human body also there is certain hazardness, as: 1991, Zhao Guoxi was at " tensio-active agent physical chemistry " P495; 1994, disclosed content in Liu Chengzai " tensio-active agent is complete works of " P35.So for those harsh oil reservoirs, we ought to seek a kind of under alkali-free, high temperature (formation temperature is greater than 85 ℃), high salt (more than salinity 40000mg/L) condition Stability Analysis of Structures, and can form 10 with crude oil
-3～10
-4The mN/m ultra low interfacial tension effectively improves the displacing surfactant system of oil recovery factor.Of the present invention this in the alkali-free situation just, be suitable for the moon of high temperature and high salt oil deposit-non-Gemini surface active agent, its preparation method, binary is compound and the application in tertiary oil recovery.
Summary of the invention
Technical problem to be solved by this invention is that the oil-displacing agent that contains tensio-active agent in prior art exists under the high temperature and high salt condition oil displacement efficiency poor, the corrosion that in the high and ternary composite driving of working concentration, alkali brings stratum and oil well and the problem of incrustation injury provide a kind of flooding method for high temperature and high salt oil deposit.The method will contain N, and the two carboxylate surface active agent compositions of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-are used for oil displacement process, have alkali-free, nothing corrosion and incrustation injury, and working concentration is low, oil displacement efficiency high under the high temperature and high salt condition.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of flooding method for high temperature and high salt oil deposit, the composition that the displacement of reservoir oil is used in displacement of reservoir oil temperature 〉=85 ℃, total mineralization 〉=16000mg/L, Ca
2++ Mg
2+Under the local water condition of 〉=450mg/L, underground dewatered oil is contacted with displacement of reservoir oil composition, with the abundant displacement of the crude oil in rock core out, wherein said displacement of reservoir oil composition comprises following component by percentage to the quality:
(1) 0.01～5.0% N, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-;
(2) 0.01～3.0% polymkeric substance;
(3) 92.0～99.98% local water;
Wherein the general molecular formula of (1) component is:
In formula: R
1Be C
9～C
17Alkyl, R
2Be C
2～C
6Alkyl, n is the adduction number of ethoxy group EO, its span is any one integer in 2～7; M is any one metal ion that is selected from potassium, sodium or lithium.
In technique scheme, displacement of reservoir oil temperature is preferably 85～90 ℃; Described local water total mineralization is preferably 16000～32000mg/L, Ca
2++ Mg
2+Be preferably 450～890mg/L; Polymkeric substance is preferably from above-mentioned temperature resistant antisalt polymkeric substance; The M preferred version is potassium and sodium, and more preferably scheme is for being selected from sodium; R
1It is to have best hydrophile-lipophile balance value at 3～4 o'clock that carbon number adds ratio preferable range that 1 sum and EO count n, and its aqueous solution can form 10 with crude oil
-3～10
-4Ultra low interfacial tension; N, the R in the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-
1Carbonatoms is preferably nine, 11,15 or 17, R
2Carbonatoms be preferably two, four or six.
This flooding method specifically comprises the following steps:
(a) N, the preparation of the two fatty acyl group diamines dipropionic acids of N-:
Be 10～18 lipid acid, thionyl chloride and N with the carbochain number of required proportioning, dinethylformamide (DMF) was 70～100 ℃ of reactions 2～5 hours, excessive thionyl chloride is extracted in decompression out, and it is 10～18 fat acyl chloride that the transparent liquid that obtains is the carbochain number
1With the carbochain number of required proportioning be separately 2～6 diamines, methyl acrylate and solvent Isosorbide-5-Nitrae-dioxane mix all with after, 40～70 ℃ of reactions 2～5 hours, the reduce pressure unreacted raw material of removal and solvent got diamines dipropionic acid methyl esters
2, regulate PH=9～10 with the sodium hydroxide solution of 50wt%, drip under vigorous stirring
1, then in 40～70 ℃ of reactions 2～6 hours, getting N, the two carbochain numbers of N-are 10～18 fatty acyl group diamines dipropionic acid methyl esters
3, add the ethanol of aequum, regulate PH=11～12 with the sodium hydroxide solution of 50wt%, back flow reaction 2～6 hours, after acidifying N, the two carbochain numbers of N-are 10～18 fatty acyl group diamines dipropionic acids.Wherein, preparation
1The time, the carbochain number is that the mol ratio of 10～18 lipid acid, thionyl chloride and DMF is 1: 1.0～2.0: 0.03～0.1; Preparation
2The time, solvent is Isosorbide-5-Nitrae-dioxane, and consumption is that the carbochain number is 3～6 times of 2～6 diamines quality, and the carbochain number is that 2～6 diamines and the mol ratio of methyl acrylate are 1: 1.0～4.0; Preparation
3The time, the carbochain number is that the mol ratio that 10～18 fat acyl chloride and carbochain number are 2～6 diamines dipropionic acid methyl esters is 1.9～2.5: 1; Preparation N, when the two carbochain numbers of N-were 10～18 fatty acyl group diamines dipropionic acid, the ethanol consumption was that the carbochain number is 5～10 times of 2～6 diamines quality.
(b) N, the preparation of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-:
The N that step (a) is synthesized; the two carbochain numbers of N-are that 10～18 fatty acyl group diamines dipropionic acids and oxyethane are 85～160 ℃ by required proportioning in temperature of reaction; pressure is less than under 0.80MPa gauge pressure condition; the basic cpd of calcium is catalyzer; react to get N, the two carbochain numbers of N-are 10～18 fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers.Wherein, N, the two carbochain numbers of N-are that 10～18 fatty acyl group diamines dipropionic acids and oxyethane mol ratio are 1: 4～14, and catalyst levels is N, and the two carbochain numbers of N-are 0.5～5.0% of 10～18 fatty acyl group diamines dipropionic acid quality.
(c) N, the preparation of the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-:
The N that step (b) is synthesized; the two carbochain numbers of N-are that 10～18 fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers are by required proportioning and sodium chloroacetate, potassium hydroxide or sodium hydroxide and Tetrabutyl amonium bromide catalyst mix; take toluene as solvent; 50～130 ℃ of temperature of reaction; reacted 3～15 hours; reaction finishes to get N by aftertreatment, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-.Wherein, N, the mol ratio that the two carbochain numbers of N-are 10～18 fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers, sodium chloroacetate, potassium hydroxide or sodium hydroxide and Tetrabutyl amonium bromide=1: 2～6: 2～8: 0.05～0.3.
(d) with the N of aequum, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-, above-mentioned temperature resistant antisalt polymkeric substance and local water evenly mix, and stirring at room 1～3 hour obtains required composition.By percentage to the quality, N, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-, above-mentioned temperature resistant antisalt polymkeric substance and the proportioning of local water are 0.01～5.0%: 0.01～3.0%: 92.0～99.98%.
(e) first take total mineralization as 16000～40000mg/L, Ca
2++ Mg
2+The local water that is 450～1000mg/L is saturated with rock core, measure the volume of voids (PV) of rock core, then carry out saturated with dewatered oil, carry out the imitation oil displacement experiment test at 85～95 ℃ of temperature: first water drive is to moisture 92%, the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive calculates to moisture 99% the percentage ratio that improves oil recovery factor.
In technique scheme, (a) prepare in the step
1The time, the carbochain number be the mol ratio of 10～18 lipid acid, thionyl chloride and DMF be preferably 1: 1.2～2.0: 0.05～0.1; Preparation
2The time solvent be 1, it is 4～5 times of 2～6 diamines quality that 4-dioxane, consumption are preferably the carbochain number, the carbochain number be the mol ratio of 2～6 diamines and methyl acrylate be preferably 1: 2.2～3.0, temperature of reaction is preferably 50～60 ℃, and the reaction times is preferably 3～4 hours; Preparation
3The time, the carbochain number is that the mol ratio that 10～18 fat acyl chloride and carbochain number are 2～6 diamines dipropionic acid methyl esters is preferably 2.0～2.2: 1, and temperature of reaction is preferably 60～70 ℃, and the reaction times is preferably 3～4 hours; Preparation N, when the two carbochain numbers of N-were 10～18 fatty acyl group diamines dipropionic acid, it was 6～8 times of 2～6 diamines quality that the ethanol consumption is preferably the carbochain number, the reaction times is preferably 3～5 hours.(b) N, the two carbochain numbers of N-be 10～18 fatty acyl group diamines dipropionic acids and oxyethane mol ratio be preferably 1: 6～12, catalyst levels is preferably N, N-pair of carbochain numbers are 1.0～3.0% of 10～18 fatty acyl group diamines dipropionic acid quality.(c) N in step; the two carbochain numbers of N-be the mol ratio of 10～18 fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers, sodium chloroacetate, sodium hydroxide (potassium hydroxide) and Tetrabutyl amonium bromide be preferably 1: 2.5～5.5: 3～7: 0.1～0.2; temperature of reaction is preferably 70～110 ℃, and the reaction times is preferably 5～12 hours.(d) by percentage to the quality, N, the consumption preferable range of the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-is 0.03～1.0%, more preferably scope is 0.1～0.3%; Above-mentioned temperature resistant antisalt polymer loading preferable range is 0.05～0.5%; More preferably scope is 0.1～0.2%, and the reaction times is preferably 1.5～2.5 hours.(e) displacement of reservoir oil temperature is preferably 85～90 ℃; The local water total mineralization is preferably 16000～32000mg/L, Ca
2++ Mg
2+Be preferably 450～890mg/L.
the N of the prepared displacement of reservoir oil of the present invention in composition, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-, owing to containing simultaneously aerobic ethene non-ionic group and carboxylate anion group in its molecular structure, make the salt tolerant advantage of its heat resistance that has anion surfactant concurrently and nonionogenic tenside, and symmetrical Shuangzi constitutional features, make it have micelle-forming concentration again low, reduce the interfacial tension ability strong, the features such as the rheological of anti-high salinity and uniqueness and visco-elasticity-viscosifying action, has more good performance than conventional surfactant.Do not contain aromatic ring structure in its molecule in addition, be easier to biological degradation, therefore less to the harm of human body and environment, be a kind of green surfactant that is suitable for the used for tertiary oil recovery of high temperature and high salt oil deposit.
Adopt the flooding method for high temperature and high salt oil deposit of the present invention, under the alkali-free condition, can be used for 85～90 ℃ of formation temperature, salinity is 16000～32000 mg/litre, Ca
2+, Mg
2+Be Shengli Oil Field victory Tuo Er district's local water and the crude oil of 450～890 mg/litre; take consumption as 0.1～0.3wt%N; the temperature resistant antisalt polymer formation above-mentioned composition oil-displacing agent that the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-and 0.1～0.2wt% are above-mentioned; measure the dynamic interface tension value between this oil-displacing agent aqueous solution and Shengli Oil Field victory Tuo Er district crude oil, can reach 10
-3～10
-4The ultra low interfacial tension of mN/m, through physical simulation displacement test Lab-evaluation this oil-displacing agent on high temperature, high salinity reservoir can be on the water drive basis (water drive improves oil recovery factor and reaches 41.4%) improve oil recovery factor and can reach 16.2%, obtained technique effect preferably.
Description of drawings
Fig. 1 is N, the infared spectrum of the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-.
The N of the present invention's preparation; the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-can characterize by the following method: after synthetics is purified; use U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), be 2850～2950cm in wave number
-1Methyl and the flexible characteristic peak of methylene radical C-H on alkyl chain, 1475cm appear in the place
-1C-H flexural vibration on alkyl chain, 1856～1505cm
-1A large broad peak, comprised the charateristic avsorption band of three kinds of vC=O, 1418cm
-1In the place, the peak is the III key band C-N stretching, extension of acid amides, 1106cm
-1Locate a broad peak, this peak is owing to having connected EO, and the upper C-O-C asymmetric stretch of EO bands of a spectrum cause, 985cm
-1Peak disappear, this peak usually associates relevantly with terminal hydroxyl, proved response has generated N really thus, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-.
The present invention is further elaborated below by embodiment.
Embodiment
[embodiment 1]
(a) N, the two lauroyl ethylene diamine dipropionic acids of N-synthetic
With lauric acid 300 grams (1.5 moles), sulfur oxychloride 267.8 grams (2.25 moles) and 4.5 gram DMF, add in 1000 milliliters of four-hole boiling flasks being furnished with sealing machine stirring, thermometer, prolong etc., in 90 ℃ the reaction 3 hours after, decompression steams excessive thionyl chloride, obtains lauroyl chloride.Another is furnished with in 2000 milliliters of four-hole boiling flasks of sealing machine stirring, thermometer, prolong and adds anhydrous ethylenediamine 45.0 grams (0.75 mole), 180 grams 1, the 4-dioxane, be warming up to 50 ℃, slowly drip methyl acrylate 141.9 grams (1.65 moles), drip off and continue reaction 3 hours, unreacted methyl acrylate and solvent Isosorbide-5-Nitrae-dioxane are removed in decompression, and residuum is the ethylene diamine dipropionic acid methyl esters.with 50wt% sodium hydroxide conditioned reaction liquid PH=8～10, slowly drip lauroyl chloride under vigorous stirring, constantly add simultaneously 50wt% sodium hydroxide with the PH that keeps reaction 8～10, continue reaction 3 hours in 60 ℃ after dripping off, get N, the two lauroyl ethylene diamine dipropionic acid methyl esters of N-, continuation adds 270 gram ethanol in reaction flask, transfer PH=11～12 with 50wt% sodium hydroxide again, refluxed 4 hours, cooling, filtration is desalted, pressure reducing and steaming ethanol, residuum is neutralized to strongly-acid with hydrochloric acid, branch vibration layer, get N, two lauroyl ethylene diamine dipropionic acid 300.3 grams of N-, molar yield 70.5%.
(b) N, the two lauroyl ethylene diamine dipropionic acid two polyoxy Vinyl Ethers (n=4) of N-synthetic
With the synthetic N of step (a); the basic cpd of two lauroyl ethylene diamine dipropionic acid 300.3 grams (0.529 mole) of N-, 3.5 gram calcium add be furnished with condensing works, in the high-pressure reactor of whipping appts and gas distributor; when limit logical nitrogen limit heating is made 135 ℃; add 20 gram water, stirring reaction 1 hour.After removing moisture, be cooled to 80 ℃, the sulfuric acid (20wt%) that slowly drips the catalyst neutralisation theoretical amount makes the compound oxidizing calcium alkoxylating catalyst reaction solution system of high reactivity, highly selective, system temperature is heated to 80～90 ℃, open vacuum system, dehydration is 2 hours under high vacuum, then uses nitrogen purging 3～4 times, the system temperature of reaction is transferred to 140 ℃ slowly pass into 186.4 grams (4.236 moles) oxyethane, control pressure≤0.60MPa.Reaction is used the nitrogen purging system after finishing, and cooling rear neutralization, dehydration get N, two lauroyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=4) 419.5 grams of N-, molar yield 86.2%.
(c) N, the two lauroyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-synthetic
The N that step (b) is synthesized; two lauroyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=4) 419.5 grams (0.460 mole) of N-and 155.3 grams (2.77 moles) potassium hydroxide, 214.6 grams (1.84 moles) sodium chloroacetate, 16.3 gram Tetrabutyl amonium bromides, 1500 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 90 ℃ of reactions 8 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two lauroyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-, molar yield 87.8%.To synthetic N, the two lauroyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two lauroyl ethylene diamine dipropionic acid two two carboxylate salt 0.15wt% of polyoxy Vinyl Ether (n=4) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.15wt% and 97.0wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 85 ℃ of temperature, salinity 32000mg/L, Ca
2++ Mg
2+In the water of 890mg/L, the apparent viscosity that records this composition is 15.5mPa.s; Form the ultra low interfacial tension of 0.0005mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 32000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 890mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 52.1%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 85 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 41.2%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 16.2% again.
[embodiment 2]
(a) N, the two lauroyl hexanediamine dipropionic acids of N-synthetic
With [embodiment 1] (a); difference substitutes 45.0 grams (0.75 mole) anhydrous ethylenediamine with the anhydrous hexanediamine of 87.0 grams (0.75 mole), and all the other are identical, get N; two lauroyl hexanediamine dipropionic acid 328.5 grams of N-, molar yield 70.2%.
(b) N, the two lauroyl hexanediamine dipropionic acid two polyoxy Vinyl Ethers (n=3) of N-synthetic
With [embodiment 1] (b); difference is with the N of 328.5 grams (0.578 mole); the two lauroyl hexanediamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 152.7g (3.470 moles); the usage quantity of the basic cpd of calcium is 8.6 grams;) N, two lauroyl hexanediamine dipropionic acid two polyoxy Vinyl Ether (n=3) 446.0 grams of N-, molar yield 86.9%.
(c) N, the two lauroyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-synthetic
The N that step (b) is synthesized; two lauroyl hexanediamine dipropionic acid two polyoxy Vinyl Ether (n=3) 446.0 grams (0.503 mole) of N-and 113.0 grams (2.014 moles) potassium hydroxide, 251.7 grams (2.16 moles) sodium chloroacetate, 18.3 gram Tetrabutyl amonium bromides, 1500 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 100 ℃ of reactions 6 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two lauroyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-, molar yield 87.4%.To synthetic N, the two lauroyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two lauroyl hexanediamine dipropionic acid two two carboxylate salt 0.2wt% of polyoxy Vinyl Ether (n=3) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.15wt% and 96.5wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 85 ℃ of temperature, salinity 24000mg/L, Ca
2++ Mg
2+In the water of 667mg/L, the apparent viscosity that records this composition is 15.9mPa.s; Form the ultra low interfacial tension of 0.0038mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 24000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 667mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, measure the volume of voids (PV) 52.2% of rock core, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 85 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 40.6%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 15.1% again.
[embodiment 3]
(a) N, the two ten acyl group butanediamine dipropionic acids of N-synthetic
With [embodiment 1] (a); difference substitutes 300.0 grams (1.5 moles) lauric acid with the capric acid of 261.0 grams (1.5 moles); anhydrous butanediamine with 66.0 grams (0.75 mole) substitutes 45.0 grams (0.75 mole) anhydrous ethylenediamine; all the other are identical; get N; two ten acyl group butanediamine dipropionic acid 285.2 grams of N-, molar yield 69.9%.
(b) N, the two ten acyl group butanediamine dipropionic acid two polyoxy Vinyl Ethers (n=3) of N-synthetic
With [embodiment 1] (b); difference is with the N of 285.2 grams (0.524 mole); the two ten acyl group butanediamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 138.3g (3.144 moles); the usage quantity of the basic cpd of calcium is 6.7 grams; get N, two ten acyl group butanediamine dipropionic acid two polyoxy Vinyl Ether (n=3) 360.6 grams of N-, molar yield 85.6%.
(c) N, the two ten acyl group butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-synthetic
The N that step (b) is synthesized; two ten acyl group butanediamine dipropionic acid two polyoxy Vinyl Ether (n=3) 360.6 grams (0.448 mole) of N-and 100.3 grams (1.79 moles) potassium hydroxide, 263.3 grams (1.34 moles) sodium chloroacetate, 18.8 gram Tetrabutyl amonium bromides, 1500 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 80 ℃ of reactions 8 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two ten acyl group butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-, molar yield 86.5%.To synthetic N, the two ten acyl group butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=3) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two ten acyl group butanediamine dipropionic acid two two carboxylate salt 0.15wt% of polyoxy Vinyl Ether (n=3) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.15wt% and 97.0wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 90 ℃ of temperature, salinity 32000mg/L, Ca
2++ Mg
2+In the water of 890mg/L, the apparent viscosity that records this composition is 16.0mPa.s; Form the ultra low interfacial tension of 0.0022mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 32000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 890mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 51.9%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 90 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 41.4%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 14.3% again.
[embodiment 4]
(a) N, the two palmitoyl ethylene diamine dipropionic acids of N-synthetic
With palmitinic acid 422.4 grams (1.65 moles), sulfur oxychloride 235.6 grams (1.875 moles) and 6.3 gram DMF, add in 1000 milliliters of four-hole boiling flasks being furnished with sealing machine stirring, thermometer, prolong etc., in 80 ℃ the reaction 5 hours after, decompression steams excessive thionyl chloride, obtains palmityl chloride.Another is furnished with in 2000 milliliters of four-hole boiling flasks of sealing machine stirring, thermometer, prolong and adds anhydrous ethylenediamine 45.0 grams (0.75 mole), 225 grams 1, the 4-dioxane, be warming up to 60 ℃, slowly drip methyl acrylate 161.3 grams (1.875 moles), drip off and continue reaction 4 hours, unreacted methyl acrylate and solvent Isosorbide-5-Nitrae-dioxane are removed in decompression, and residuum is the ethylene diamine dipropionic acid methyl esters.with 50wt% sodium hydroxide conditioned reaction liquid PH=8～10, slowly drip lauroyl chloride under vigorous stirring, constantly add simultaneously 50wt% sodium hydroxide with the PH that keeps reaction 8～10, continue reaction 4 hours in 70 ℃ after dripping off, get N, the two palmitoyl ethylene diamine dipropionic acid methyl esters of N-, continuation adds 360 gram ethanol in reaction flask, transfer PH=11～12 with 50wt% sodium hydroxide again, refluxed 4 hours, cooling, filtration is desalted, pressure reducing and steaming ethanol, residuum is neutralized to strongly-acid with hydrochloric acid, branch vibration layer, get N, two palmitoyl ethylene diamine dipropionic acid 354.5 grams of N-, molar yield 69.5%.
(b) N, the two palmitoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ethers (n=5) of N-synthetic
With [embodiment 1] (b); difference is with the N of 354.5 grams (0.521 mole); the two palmitoyl ethylene diamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 229.2g (5.21 moles); the usage quantity of the basic cpd of calcium is 6.8 grams; get N, two palmitoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=5) 497.8 grams of N-, molar yield 84.7%.
(c) N, the two palmitoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-synthetic
The N that step (b) is synthesized; two palmitoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=5) 497.8 grams (0.441 mole) of N-and 106.0 grams (2.65 moles) sodium hydroxide, 205.3 grams (1.76 moles) sodium chloroacetate, 17.6 gram Tetrabutyl amonium bromides, 1500 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 100 ℃ of reactions 8 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two palmitoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-, molar yield 85.9%.To synthetic N, the two palmitoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two palmitoyl ethylene diamine dipropionic acid two two carboxylate salt 0.1wt% of polyoxy Vinyl Ether (n=5) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.2wt% and 97.0wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 85 ℃ of temperature, salinity 16000mg/L, Ca
2++ Mg
2+In the water of 450mg/L, the apparent viscosity that records this composition is 15.6mPa.s; Form the ultra low interfacial tension of 0.0059mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 16000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 450mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 51.7%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 85 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 40.7%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 16.1% again.
[embodiment 5]
(a) N, the two palmitoyl butanediamine dipropionic acids of N-synthetic
With [embodiment 4] (a); difference substitutes 45.0 grams (0.75 mole) anhydrous ethylenediamine with the anhydrous butanediamine of 66.0 grams (0.75 mole), and all the other are identical, get N; two palmitoyl butanediamine dipropionic acid 364.8 grams of N-, molar yield 68.7%.
(b) N, the two palmitoyl butanediamine dipropionic acid two polyoxy Vinyl Ethers (n=4) of N-synthetic
With [embodiment 1] (b); difference is with the N of 364.8 grams (0.515 mole); the two palmitoyl butanediamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 181.4g (4.122 moles); the usage quantity of the basic cpd of calcium is 7.7 grams; get N, two palmitoyl butanediamine dipropionic acid two polyoxy Vinyl Ether (n=4) 461.3 grams of N-, molar yield 84.5%.
(c) N, the two palmitoyl butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-synthetic
The N that step (b) is synthesized; two palmitoyl butanediamine dipropionic acid two polyoxy Vinyl Ether (n=4) 461.3 grams (0.435 mole) of N-and 106.5 grams (2.66 moles) sodium hydroxide, 178.6 grams (1.53 moles) sodium chloroacetate, 20.6 gram Tetrabutyl amonium bromides, 1600 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 100 ℃ of reactions 10 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two palmitoyl butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-, molar yield 85.5%.To synthetic N, the two palmitoyl butanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two palmitoyl butanediamine dipropionic acid two two carboxylate salt 0.25wt% of polyoxy Vinyl Ether (n=4) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.15wt% and 96.5wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 85 ℃ of temperature, salinity 24000mg/L, Ca
2++ Mg
2+In the water of 667mg/L, the apparent viscosity that records this composition is 15.3mPa.s; Form the ultra low interfacial tension of 0.0009mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 24000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 667mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 51.4%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 85 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 40.5%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 14.8% again.
[embodiment 6]
(a) N, the two stearoyl ethylene diamine dipropionic acids of N-synthetic
With stearic acid 497 grams (1.75 moles), sulfur oxychloride 374.9 grams (3.15 moles) and 7.5 gram DMF, add in 1000 milliliters of four-hole boiling flasks being furnished with sealing machine stirring, thermometer, prolong etc., in 95 ℃ the reaction 3 hours after, decompression steams excessive thionyl chloride, obtains stearyl chloride.Another is furnished with in 2000 milliliters of four-hole boiling flasks of sealing machine stirring, thermometer, prolong and adds anhydrous ethylenediamine 45.0 grams (0.75 mole), 225 grams 1, the 4-dioxane, be warming up to 60 ℃, slowly drip methyl acrylate 193.5 grams (2.25 moles), drip off and continue reaction 4 hours, unreacted methyl acrylate and solvent Isosorbide-5-Nitrae-dioxane are removed in decompression, and residuum is the ethylene diamine dipropionic acid methyl esters.with 50wt% sodium hydroxide conditioned reaction liquid PH=8～10, slowly drip lauroyl chloride under vigorous stirring, constantly add simultaneously 50wt% sodium hydroxide with the PH that keeps reaction 8～10, continue reaction 3 hours in 70 ℃ after dripping off, get N, the two stearoyl ethylene diamine dipropionic acid methyl esters of N-, continuation adds 315 gram ethanol in reaction flask, transfer PH=11～12 with 50wt% sodium hydroxide again, refluxed 4 hours, cooling, filtration is desalted, pressure reducing and steaming ethanol, residuum is neutralized to strongly-acid with hydrochloric acid, branch vibration layer, get N, two stearoyl ethylene diamine dipropionic acid 377.0 grams of N-, molar yield 68.3%.
(b) N, the two stearoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ethers (n=6) of N-synthetic
With [embodiment 1] (b); difference is with the N of 377.0 grams (0.512 mole); the two stearoyl ethylene diamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 270.3g (6.144 moles); the usage quantity of the basic cpd of calcium is 5.7 grams; get N, two stearoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=6) 542.3 grams of N-, molar yield 83.8%.
(c) N, the two stearoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=6) of N-synthetic
The N that step (b) is synthesized; two stearoyl ethylene diamine dipropionic acid two polyoxy Vinyl Ether (n=6) 542.3 grams (0.429 mole) of N-and 102.8 grams (2.57 moles) sodium hydroxide, 249.9 grams (2.14 moles) sodium chloroacetate, 27.2 gram Tetrabutyl amonium bromides, 1800 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 110 ℃ of reactions 12 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two stearoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=6) of N-, molar yield 84.7%.To synthetic N, the two stearoyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=6) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two stearoyl ethylene diamine dipropionic acid two two carboxylate salt 0.2wt% of polyoxy Vinyl Ether (n=6) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.1wt% and 97.0wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 90 ℃ of temperature, salinity 32000mg/L, Ca
2++ Mg
2+In the water of 890mg/L, the apparent viscosity that records this composition is 15.2mPa.s; Form the ultra low interfacial tension of 0.0013mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 32000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 890mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 52.1%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 90 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 40.9%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 14.9% again.
[embodiment 7]
(a) N, the two stearoyl hexanediamine dipropionic acids of N-synthetic
With [embodiment 6] (a); difference substitutes anhydrous ethylenediamine 45.0 grams (0.75 mole) with the anhydrous hexanediamine of 87.0 grams (0.75 mole), and all the other are identical, get N; two stearoyl hexanediamine dipropionic acid 383.1 grams of N-, molar yield 64.5%.
(b) N, the two stearoyl hexanediamine dipropionic acid two polyoxy Vinyl Ethers (n=5) of N-synthetic
With [embodiment 1] (b); difference is with the N of 383.1 grams (0.484 mole); the two stearoyl hexanediamine dipropionic acids of N-substitute 300.3 grams (0.529 mole) N; the usage quantity of the two lauroyl ethylene diamine dipropionic acids of N-, oxyethane is 212.9g (4.84 moles); the usage quantity of the basic cpd of calcium is 6.0 grams; get N, two stearoyl hexanediamine dipropionic acid two polyoxy Vinyl Ether (n=5) 484.2 grams of N-, molar yield 81.2%.
(c) N, the two stearoyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-synthetic
The N that step (b) is synthesized; two stearoyl hexanediamine dipropionic acid two polyoxy Vinyl Ether (n=5) 484.2 grams (0.393 mole) of N-and 153.2 grams (2.73 moles) potassium hydroxide, 227.2 grams (1.95 moles) sodium chloroacetate, 25.5 gram Tetrabutyl amonium bromides, 1800 milliliters of toluene are mixed in to be furnished with mechanical stirring, in the reactor of 5000 milliliters of thermometer and reflux condensing tube, to be heated to 110 ℃ of reactions 12 hours.Cooling, neutralization divides and removes inorganic salt, the N that alkalizes to get, the two stearoyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-, molar yield 83.5%.To synthetic N, the two stearoyl hexanediamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=5) of N-are used U.S. Nicolet-380 FT-IR spectrograph, adopt liquid-film method to carry out Infrared spectroscopy (sweep limit 4000～400cm
-1), have all charateristic avsorption bands of Fig. 1.
(d) with the synthetic N of step (c); the two stearoyl hexanediamine dipropionic acid two two carboxylate salt 0.15wt% of polyoxy Vinyl Ether (n=5) of N-, above-mentioned temperature resistant antisalt polymkeric substance 0.15wt% and 97.0wt% Shengli Oil Field victory Tuo Er district win local water mix and blend 2 hours, obtain the composition that a kind of displacement of reservoir oil of homogeneous transparent is used.At 85 ℃ of temperature, salinity 16000mg/L, Ca
2++ Mg
2+In the water of 450mg/L, the apparent viscosity that records this composition is 15.6mPa.s; Form the ultra low interfacial tension of 0.0061mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
(e) first with salinity 16000mg/L, Ca
2++ Mg
2+(length is 30 centimetres to the local water of 450mg/L, and diameter is 2.5 centimetres, and rate of permeation is 1.5 microns with rock core
2) saturated, the volume of voids (PV) of measuring rock core is 51.3%, then carry out saturated with Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil, carry out the imitation oil displacement experiment test under 85 ℃ of constant temperature: first water drive is to moisture 92%, record water drive and improve oil recovery factor 41.1%, again the synthetic displacement of reservoir oil of metaideophone 0.3pv (rock pore volume) step (d) with composition after, water drive is to moisture 99%, records on the water drive basis to improve oil recovery factor 15.8% again.
[comparative example 1]
With [embodiment 1] (d); difference substitutes 0.15wt%N with the petroleum sodium sulfonate (Wuxi refinery) of 0.15wt%; the two lauroyl ethylene diamine dipropionic acid two two carboxylate salts of polyoxy Vinyl Ether (n=4) of N-; all the other are identical; the apparent viscosity that records this composition is 14.2mPa.s, forms the interfacial tension of 0.0712mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
With [embodiment 1] (e), record water drive and improve oil recovery factor 40.3%, the above-mentioned displacement of reservoir oil of metaideophone with composition after, record on the water drive basis and can improve again oil recovery factor 10.3%.
[comparative example 2]
With [embodiment 1] (d), difference substitutes the above-mentioned temperature resistant antisalt polymkeric substance of 0.15wt% take the super high molecular weight polyacrylamide (viscosity-average molecular weight is as 2,500 ten thousand) of 0.15wt%, all the other are identical, the apparent viscosity that records this composition is 10.5mPa.s, forms the interfacial tension of 0.0492mN/m between said composition and Shengli Oil Field victory Tuo Er district 0-141 well dewatered oil.Apparent viscosity is by the BROODFIELD II type viscometer determining of U.S. Brookfield company, and the TX500 type rotation that interfacial tension is produced by Texas ,Usa university is dripped interfacial tensimeter and measured.
With [embodiment 1] (e), record water drive and improve oil recovery factor 40.5%, the above-mentioned displacement of reservoir oil of metaideophone with composition after, record on the water drive basis and can improve again oil recovery factor 9.5%.
Claims (6)
1. flooding method that is used for high temperature and high salt oil deposit, the composition that the displacement of reservoir oil is used in displacement of reservoir oil temperature 〉=85 ℃, total mineralization 〉=16000mg/L, Ca
2++ Mg
2+Under the local water condition of 〉=450mg/L, underground dewatered oil is contacted with displacement of reservoir oil composition, with the abundant displacement of the crude oil in rock core out, wherein said displacement of reservoir oil composition comprises following component by percentage to the quality:
(1) 0.01～5.0% N, the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-;
(2) 0.01～3.0% polymkeric substance;
(3) 92.0～99.98% local water;
Wherein the general molecular formula of (1) component is:
In formula: R
1Be C
9～C
17Alkyl, R
2Be C
2～C
6Alkyl, n is the adduction number of ethoxy group EO, its span is any one integer in 2～7; M is any one metal ion that is selected from potassium, sodium or lithium; Described polymkeric substance is selected from temperature-tolerant anti-salt polyacrylamide; Described temperature-tolerant anti-salt polyacrylamide is formed by acrylamide, 2-acrylamide-2-methylpro panesulfonic acid, 2-acrylamido dodecyl sodium sulfonate and four kinds of monomer copolymerizations of allyl group oleyl ether, and its molar percentage is 76: 18: 5: 1.
2. the flooding method for high temperature and high salt oil deposit according to claim 1, is characterized in that described displacement of reservoir oil temperature is 85～95 ℃.
3. the flooding method for high temperature and high salt oil deposit according to claim 1, the total mineralization that it is characterized in that described local water is 16000～40000mg/L, Ca
2++ Mg
2+Be 450～1000mg/L.
4. the flooding method for high temperature and high salt oil deposit according to claim 1, is characterized in that described N, the R in the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-
1Carbonatoms is nine, 11,13,15 or 17.
5. the flooding method for high temperature and high salt oil deposit according to claim 1, is characterized in that described N, the R in the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-
2Carbonatoms be two, four or six.
6. the flooding method for high temperature and high salt oil deposit according to claim 1, is characterized in that described N, the R in the two carboxylate salts of the two fatty acyl group diamines dipropionic acid two polyoxy Vinyl Ethers of N-
1Carbon number adds 1 sum and the EO adduction is counted the ratio of n between 2～4.
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| CN102277146B (en) * | 2010-06-11 | 2013-12-25 | 中国石油化工股份有限公司 | Composition for improving recovery ratio substantially and preparation method thereof |
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