CN105085288B - A kind of preparation method of organic polycarboxylic acid - Google Patents
A kind of preparation method of organic polycarboxylic acid Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of organic polycarboxylic acid, described organic polycarboxylic acid is glutamic acid tetraacethyl, is raw material with L glutamic acid, 2 chloroacetonitriles, is synthesized for catalyst using zirconium chloride.Yield of the present invention is high, environmental protection.
Description
The application is divisional application, and the applying date of original application is on 04 18th, 2014, Application No.
2014101589028, invention entitled be applied to high temperature carbonatite Reservoir Acidization organic polycarboxylic acid and turn to acid and its system
Preparation Method.
Technical field
The present invention relates to one kind is applied to high temperature carbonatite Reservoir Acidization organic polycarboxylic acid and turns to acid and its preparation
Method, belongs to acidification of oil field technical field, particularly in Oil/gas Well development process carbonate rock reservoir acidifying use acidifying solution and
Acidifying dividing technology.
Background technology
The acidification of oil field carbonate rock reservoir is mainly to the dredging entering the pollution releasing of well area and generation new tunnel, but
It is the anisotropism due to carbonate rock reservoir, make conventional acid solution preferentially enter the high permeability zone of less pollution, thus do not reach
The effect of acidification, even homogenizing carbonate rock reservoir also have each layer and acid liquid reaction inequality, lead to carbonate rock reservoir acid
Change process more difficult than sandstone.
Acidifying dividing technology with regard to oil field has very long history, begins to use hydrochloric acid that oil well is carried out within external 1932
Acidification, proposes, for improving acidizing effect, the problem improving the sour section of oil reservoir suction, and acid solution steering flowing has been brought into expectation
In the stage, start since then, acidifying steering technique slowly grows up.Abroad since 20 century 70s, acidifying steering technique grinds
Study carefully very active, domestic just proceed by research in the eighties in 20th century.
Ripe acid solution steering technique is using mechanical steering mode at present, and this mode is using machinery in acidization
The target zone of acidifying is separated with other layers, thus reach expected acidifying turning to.It is multiple that mechanical steering technology has constructing operation
Miscellaneous, plant equipment is heavy, the shortcomings of relatively costly.Chemistry diversion Acidizing Technology is utilized in during acid filling adding chemistry and helps
Agent, this chemical agent can reduce the injectability of high permeability formation, plays the effect temporarily blocked up, thus realizing the steering of acid solution.This technology
Although simple to operate, chemical assistant can lead to have in acid solution precipitation to produce, and can reduce the effect of acidifying it is also possible to over the ground
Layer produces very big injury, and its effect is not also lasting.It is to utilize viscoelasticity that viscoelastic surfactant turns to Acidizing Technology
Surfactant turns to the preferential carbonatite with high permeability formation of acid and is reacted, from but the rising of the pH value of acid solution and Ca2+Content liter
Height, now the viscosity of acid solution progressively become big, to high permeability formation realize temporarily block up, thus realize turn to acidifying purpose.This technical costs
Higher, not high using temperature, it is poor that some viscoelastic surfactants turn to Acidizing Technology stability.
Going deep into exploitation of oil-gas field, increasing high temperature well continuously emerges.The research turning to acid is necessarily towards more
The trend development of operation at high temperature, according further at present to acidifying steering technique research and applicable cases and acidifying steering technique
Development actual, from the point of view of oil reservoir suitable development, the research carrying out high-temperature cleaning self-diverting acid in China is very
Necessary：One is can to realize acidifying low damage technology to high temperature well, improves oil production.Two is to reduce in recovery process to oil reservoir
Injury, protection reservoir, stable productivity；Three is to reduce operating cost.Develop from now on, develop the cleaning being suitable for domestic reservoir characteristic
Low damage acid system, answers emphasis to carry out turning to the high temperature resistant property research of acid system.
In view of the problem that above-mentioned existing steering acid exists in use, the present inventor is based on practical experience for many years
And abundant Professional knowledge actively study and innovate, that finally invents a kind of novelty is applied to high temperature carbonatite Reservoir Acidization
With organic polycarboxylic acid and steering acid and preparation method thereof, to solve defect of the prior art.
Content of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of preparation of suitable organic polycarboxylic acid
Method, has yield height, the feature of environmental protection.
In order to solve above-mentioned technical problem, present invention employs following technical scheme：
A kind of preparation method of organic polycarboxylic acid, described organic polycarboxylic acid is glutamic acid tetraacethyl, chemical structural formula
As follows：
Described organic polycarboxylic acid L-Glutamic Acid, 2- chloroacetonitrile are raw material, are synthesized for catalyst using zirconium chloride.
Preferably, described preparation method step is as follows：
(1) cyanalation：The 2- chloroacetonitrile of the L-Glutamic Acid and 20-25 mass parts that accurately weigh 40-45 mass parts adds
In the distilled water of 130-140 mass parts, the zirconium chloride of 0.1-0.2 mass parts is added to carry out at 200 DEG C for catalyst cyanalation
Reaction；
(2) hydrolyze：Cyanalation product is hydrolyzed at 90 DEG C reaction, obtains the water-soluble of glutamic acid tetraacethyl
Liquid；
(3) decolour：Glutamic acid tetrem aqueous acid is decoloured with activated carbon；
(4) concentrate：Product after decolouring is carried out being concentrated to give final products.
Compared with prior art, the beneficial effects of the present invention is：
1. the organic polycarboxylic acid of the present invention is applied to carbonate formation, high temperature resistant, and maximum operation (service) temperature reaches (200 DEG C),
Reaction rate is low, no surface dissolution phenomena, and no precipitation, no residue generate.
2. in the present invention, the preparation of organic polycarboxylic acid adopts 2- chloroacetonitrile to replace HCN commonly used in the prior art, reduces
The use of extremely toxic substance, the waste water that simultaneously produces is easily processed, and its yield is high, product purity is high, low cost, process is simple,
Waste water post processing is easily it is easy to industrialized production.Zirconium chloride is adopted to be catalyst in the present invention, yield is high, glutamic acid tetraacethyl
Reach more than 90%, by-product is few.
3. after the steering acid of the present invention is reacted with carbonatite, viscosity increases, and is conducive to the steering of acid solution to shunt.The present invention's
Turn to the generation that acid can suppress secondary precipitation, reasonable can solve the problems during acidification.
4. the steering acid of the present invention achieves the heat-resisting quantity of organic high temperature acidified liquid, and maximum operation (service) temperature is up to 200 DEG C；
Reaction rate is about the 1/10 of hydrochloric acid, no surface dissolution phenomena；Frictional resistance is low, about the 40% of water；Effective control iron ion is no heavy
Form sediment, no residue generates；Turning to viscosity after acid is reacted with carbonatite increases, and is conducive to the steering of acid solution to shunt；After meeting oil, broken glue is thorough
Bottom, the residual acid easily row of returning, anti-row's thing is neutrality, without post processing.Organic high temperature turns to the reaction that acid can reduce near wellbore zone stratum
Speed, realizes deep penetration, realizes stage acidizing.
5. the steering acid of the present invention can biodegradation, nontoxic, not chloride, safety and environmental protection.
6. the present invention turn to acid adopt organic polycarboxylic acid be one-pack type, one multiple-effect, be easy to operate, join liquid side
Just.
7. the steering acid concentration of the present invention is low, saves Material Cost.Now note and now join, save pre-mixing liquor technique, prevent
Unnecessary material waste.Liquid is joined in construction and accumulating is very convenient, saves each link cost.
8. the steering acid of the present invention is applied widely, the harmless uniform de-plugging of heterogeneous body sandstone, carbonate rock reservoir, recovers sky
So production capacity；Low porosity and low permeability oil reservoir, shale exist in a large number, the stratum of loose cementation and mineralogical composition complicated, amount of salt in groundwater
Higher reservoir is particularly advantageous, can substantially reduce formation damage and reduce the generation collapsed in stratum；Apply also for conventional acid solution
The system invalid well of acidifying, the repeatedly not good well of acidifying correctional effect, multiple reservoir reconstruction are to the well of formation damage and long well
The big well of section, use acid amount.
Brief description
Fig. 1 to Fig. 4 is respectively permeability contrast curve chart before and after 1-4 rock sample acid filling.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, but not as a limitation of the invention.
Embodiment 1
It is applied to high temperature carbonatite Reservoir Acidization organic multicomponent and turns to acid, be made up of by mass percentage following components：
Acid is turned to the present embodiment gained at 120 DEG C, carries out performance test, the results are shown in Table 1：
Table 1
| Sequence number | Project | Result | Remarks |
| 1 | Outward appearance | Brown uniform liquid | |
| 2 | PH value | 2.5 | |
| 3 | Density (g/cm3) | 1.21 | |
| 4 | Viscosity (mPa S) | 15.6 | |
| 5 | Carbonatite corrosion rate, % | 98.3 | |
| 6 | Corrosion rate (120 DEG C) | 13.6 | |
| 7 | Turn to viscosity (mPa S) | 420 | 170s-1 |
| 8 | Slow rate, % | 92.3 |
The organic polycarboxylic acid of the present embodiment using the organic polycarboxylic acid being applied to high temperature carbonatite Reservoir Acidization, specifically
For glutamic acid tetraacethyl.Concrete structure formula is as follows：
This organic polycarboxylic acid is applied to carbonate formation, and maximum operation (service) temperature reaches (200 DEG C), and reaction rate is low, no table
Face dissolution phenomena.
It is raw material that the glutamic acid tetraacethyl that the present embodiment adopts utilizes L-Glutamic Acid, 2- chloroacetonitrile, is to urge using zirconium chloride
Agent synthesizes.Comprise the following steps that：
(1) cyanalation：Accurately weigh 40 grams of L-Glutamic Acid and 20 grams of 2- chloroacetonitriles add in 130 grams of distilled water, add 0.1
Gram zirconium chloride carries out cyanalation reaction for catalyst at 200 DEG C；
(2) hydrolyze：Cyanalation product is hydrolyzed at 90 DEG C reaction, obtains the water-soluble of glutamic acid tetraacethyl
Liquid；
(3) decolour：Glutamic acid tetrem aqueous acid is decoloured with activated carbon；
(4) concentrate：Product after decolouring is carried out being concentrated to give final products.
The present invention adopts 2- chloroacetonitrile to replace HCN commonly used in the prior art, decreases the use of extremely toxic substance, produces simultaneously
Raw waste water is easily processed, and its yield is high, product purity is high, low cost, process is simple, and waste water post processing is easily it is easy to industry
Metaplasia is produced.Zirconium chloride is adopted to be catalyst in the present invention, yield is high, and glutamic acid tetraacethyl reaches more than 90%, and by-product is few.
In the present embodiment, the concrete structure formula of hyper-branched twin chain amphoteric surfactant is as follows：
Prepare comprising the following steps that of hyper-branched twin chain amphoteric surfactant：
The first step, 100 grams of sinapic acids of addition and 30 grams of N in the container with condensing reflux pipe, N- dimethylaminopropylamine,
Carry out amidatioon condensation reaction, add 0.15 gram of potassium hydroxide to make catalyst, be stirred at reflux, react 6h, reaction temperature is 130
DEG C, obtain intermediate product tertiary amine；
Second step, adds 40 grams of dichloroether in above-mentioned intermediate product tertiary amine and carries out twin chainization reaction, be stirred at reflux, instead
Answer 2h, reaction temperature is 120 DEG C, obtains intermediate product twin chain tertiary amine；
3rd step, the isopropanol of the intermediate product twin chain tertiary amine being obtained and 150 grams is added in container, adds in advance by several times
In 30 grams of sodium chloroacetate solution becoming reconciled, be stirred at reflux, at 70 DEG C, react 4h, obtain yellow to brown thick liquid, as
Final product, the weight/mass percentage composition of the wherein effect hyper-branched twin chain amphoteric surfactant of composition is 49%.
In the present embodiment, the concrete structure formula of Shuangzi quaternized pyridinium salt surfactant is as follows：
Prepare the comprising the following steps that of Shuangzi quaternized pyridinium salt surfactant of the present embodiment：
Step one：In the container with condensing reflux pipe, add 120 grams of pyridines and 40 grams of triethylamines, be simultaneously introduced band
100 grams of water preparation dimethylbenzene, is stirred flowing back, reacts 3h, reaction temperature is 140 DEG C DEG C, and vacuum distillation sloughs two at 120 DEG C
Toluene obtains pyridine base intermediate product；
Step 2：Add 40 grams of benzyl chlorides in above-mentioned pyridine base intermediate product, react 3 hours at 120 DEG C, add
20 grams of Isosorbide-5-Nitrae dichloroetane carry out twin chainization reaction, react 2h, reaction temperature is 80 DEG C～90 DEG C, and obtaining final product is brown
Thick liquid, as final product, the weight/mass percentage composition of wherein effective ingredient Shuangzi quaternized pyridinium salt surfactant is
79%.
Embodiment 2
It is applied to high temperature carbonatite Reservoir Acidization organic multicomponent and turns to acid, be made up of by mass percentage following components：
Acid is turned to the present embodiment gained at 150 DEG C, carries out performance test, the results are shown in Table 2：
Table 2
| Sequence number | Project | Result | Remarks |
| 1 | Outward appearance | Brown uniform liquid | |
| 2 | PH value | 2.0 | |
| 3 | Density (g/cm3) | 1.26 | |
| 4 | Viscosity (mPa S) | 18.7 | |
| 5 | Carbonatite corrosion rate, % | 98.8 | |
| 6 | Corrosion rate (120 DEG C) | 24.2 | |
| 7 | Turn to viscosity (mPa S) | 450 | 170s-1 |
| 8 | Slow rate, % | 94.6 |
The organic polycarboxylic acid of the present embodiment using the organic polycarboxylic acid being applied to high temperature carbonatite Reservoir Acidization, specifically
For glutamic acid tetraacethyl.Concrete structure formula is as follows：
This organic polycarboxylic acid is applied to carbonate formation, and maximum operation (service) temperature reaches (200 DEG C), and reaction rate is low, no table
Face dissolution phenomena.
It is raw material that the glutamic acid tetraacethyl that the present embodiment adopts utilizes L-Glutamic Acid, 2- chloroacetonitrile, is to urge using zirconium chloride
Agent synthesizes.Comprise the following steps that：
(1) cyanalation：Accurately weigh 45 grams of L-Glutamic Acid and 25 grams of 2- chloroacetonitriles add in 140 grams of distilled water, add 0.2
Gram zirconium chloride carries out cyanalation reaction for catalyst at 200 DEG C；
(2) hydrolyze：Cyanalation product is hydrolyzed at 90 DEG C reaction, obtains the water-soluble of glutamic acid tetraacethyl
Liquid；
(3) decolour：Glutamic acid tetrem aqueous acid is decoloured with activated carbon；
(4) concentrate：Product after decolouring is carried out being concentrated to give final products.
The present invention adopts 2- chloroacetonitrile to replace HCN commonly used in the prior art, decreases the use of extremely toxic substance, produces simultaneously
Raw waste water is easily processed, and its yield is high, product purity is high, low cost, process is simple, and waste water post processing is easily it is easy to industry
Metaplasia is produced.Zirconium chloride is adopted to be catalyst in the present invention, yield is high, and glutamic acid tetraacethyl reaches more than 90%, and by-product is few.
In the present embodiment, the concrete structure formula of hyper-branched twin chain amphoteric surfactant is as follows：
Prepare comprising the following steps that of hyper-branched twin chain amphoteric surfactant：
The first step, 120 grams of sinapic acids of addition and 40 grams of N in the container with condensing reflux pipe, N- dimethylaminopropylamine,
Carry out amidatioon condensation reaction, add 0.2 gram of potassium hydroxide to make catalyst, be stirred at reflux, react 8h, reaction temperature is 130 DEG C
～160 DEG C, obtain intermediate product tertiary amine；
Second step, adds 45 grams of dichloroether in above-mentioned intermediate product tertiary amine and carries out twin chainization reaction, be stirred at reflux, instead
Answer 4h, reaction temperature is 120 DEG C～130 DEG C, obtains intermediate product twin chain tertiary amine；
3rd step, the isopropanol of the intermediate product twin chain tertiary amine being obtained and 160 grams is added in container, adds in advance by several times
In 35 grams of sodium chloroacetate solution becoming reconciled, be stirred at reflux, at 80 DEG C, react 6h, obtain yellow to brown thick liquid, as
Final product, the weight/mass percentage composition of the wherein effect hyper-branched twin chain amphoteric surfactant of composition is 51%.
In the present embodiment, the concrete structure formula of Shuangzi quaternized pyridinium salt surfactant is as follows：
Prepare the comprising the following steps that of Shuangzi quaternized pyridinium salt surfactant of the present embodiment：
Step one：In the container with condensing reflux pipe, add 130 grams of pyridines and 45 grams of triethylamines, be simultaneously introduced band
100 grams of water preparation dimethylbenzene, is stirred flowing back, reacts 4h, reaction temperature is 140 DEG C～180 DEG C, vacuum distillation at 120 DEG C
Slough dimethylbenzene and obtain pyridine base intermediate product；
Step 2：Add 45 grams of benzyl chlorides in above-mentioned pyridine base intermediate product, react 4 hours at 120-140 DEG C, then
Add 30 grams of Isosorbide-5-Nitrae dichloroetane to carry out twin chainization reaction, react 3h, reaction temperature is 80 DEG C～90 DEG C, and obtaining final product is
Brown thick liquid, as final product, the wherein weight/mass percentage composition of effective ingredient Shuangzi quaternized pyridinium salt surfactant
For 81%.
It is low that the steering acid maximum operation (service) temperature of the present invention reaches (200 DEG C), reaction rate low the 1/10 of hydrochloric acid (about), frictional resistance
The 40% of water (about), effective control iron ion, no precipitation, no residue generate.And the present invention steering acid react with carbonatite
Afterwards viscosity increase, be conducive to the steering of acid solution shunt, can biodegradation, nontoxic, not chloride, safety and environmental protection, no surface dissolve
Phenomenon, simple to operate, easy to use, meet hydrocarbons or be diluted with water after broken glue thoroughly, the residual acid easily row of returning, during anti-row's thing is
Property, without post processing.
Table 3 below be 20% hydrochloric acid turn to acid and the embodiment of the present invention 1 steering acid acidifying before permeability K0 and acidifying after
Permeability K contrasts.
Table 3
The curve chart that above-mentioned experiment obtains is shown in Fig. 1 to Fig. 4.Fig. 1 is permeability contrast curve chart before and after No. 1 rock sample acid filling；
Fig. 2 is permeability contrast curve chart before and after No. 2 rock sample acid fillings；Fig. 3 is permeability contrast curve chart before and after No. 3 rock sample acid fillings；Fig. 4
For permeability contrast curve chart before and after No. 4 rock sample acid fillings.
Can be seen that from above-mentioned experimental result that rock sample permeability is higher, after acid filling, K/K0 ratio is less；Under the same terms
20% organic steering acid system becomes apparent from than 20% hydrochloric acid system acidizing effect.When thinking that rock sample permeability is lower, acid
Liquid flow velocity in crack is less, and acid solution is just more abundant with the reaction of rock sample；Turn to acid system acid solution viscosity during the course of the reaction
It is gradually increased, lead to acid solution reduced velocity flow, again such that acid solution is had with rock sample more sufficiently reacting, so that crack after acid filling
Permeability obtains larger improvement.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can make respectively to the present invention in the essence and protection domain of the present invention
Plant modification or equivalent, this modification or equivalent also should be regarded as being within the scope of the present invention.
Claims (1)
1. a kind of preparation method of organic polycarboxylic acid, described organic polycarboxylic acid is glutamic acid tetraacethyl, and chemical structural formula is such as
Under：
Described organic polycarboxylic acid L-Glutamic Acid, 2- chloroacetonitrile are raw material, are synthesized for catalyst using zirconium chloride；Concrete steps
As follows：
(1) cyanalation：The 2- chloroacetonitrile of the L-Glutamic Acid and 20-25 mass parts that accurately weigh 40-45 mass parts adds 130-140
In the distilled water of mass parts, the zirconium chloride of 0.1-0.2 mass parts is added to carry out cyanalation reaction at 200 DEG C for catalyst；
(2) hydrolyze：Cyanalation product is hydrolyzed at 90 DEG C reaction, obtains glutamic acid tetrem aqueous acid；
(3) decolour：Glutamic acid tetrem aqueous acid is decoloured with activated carbon；
(4) concentrate：Product after decolouring is carried out being concentrated to give final products.
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| JPH04341185A (en) * | 1990-12-11 | 1992-11-27 | Asahi Chem Ind Co Ltd | New nitrilase |
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| EP2176215B1 (en) * | 2007-08-17 | 2014-10-08 | Akzo Nobel N.V. | Glutamic acid n,n-diacetic amide, glutamic acid n-acetic amide n-acetonitrile, alkali metal salts thereof, process to prepare them and their use |
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Denomination of invention: A preparation method of organic polycarboxylic acid Effective date of registration: 20201230 Granted publication date: 20170308 Pledgee: Suining rural commercial bank Limited by Share Ltd. Pledgor: SICHUAN ANTON OIL & GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. Registration number: Y2020980010339 |
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Date of cancellation: 20210507 Granted publication date: 20170308 Pledgee: Suining rural commercial bank Limited by Share Ltd. Pledgor: SICHUAN ANTON OIL & GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. Registration number: Y2020980010339 |
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Effective date of registration: 20210811 Address after: 101400 room 205, cultural service center, building 1, yard 5, qingxiuyuan street, Jingjia Road, Yanqi Town, Huairou District, Beijing Patentee after: Anton Institute of Geological Engineering Technology (Beijing) Co.,Ltd. Address before: 629000 jinjiagou modern logistics base in Western China, Chuanshan District, Suining City, Sichuan Province Patentee before: SICHUAN ANTON OIL & GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. |