The method of obtaining converted drilling fluid containing a mixture of secondary esters resulting from the conversion of olefins |
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IPC classes for russian patent The method of obtaining converted drilling fluid containing a mixture of secondary esters resulting from the conversion of olefins (RU 2215017):
             
 Emulsion composition for killing gas, gas condensate and oil wells / 2213762
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 Emulsion drilling fluid / 2213761
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 Emulsion drilling fluid hydrocarbon-based / 2211239
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 The drilling fluid is oil-based / 2208035
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 The drilling fluid is oil-based / 2208034
The invention relates to the drilling of oil and gas wells, particularly to washing liquids used in the completion and drilling of appraisal wells with coring with natural saturation
 The method of obtaining invert-emulsion solution / 2205855
The invention relates to the oil and gas industry, in particular hydrophobic emulsions used in the killing of wells before conducting underground repairs
 The multiphase lubricant concentrate for use in aqueous working fluids in the field of exploration by drilling / 2203921
The invention relates to lubricating means, which in the course of drilling is added to the corresponding drilling fluids.
 Liquid for killing wells / 2203304
The invention relates to the field of oil and gas, in particular compositions for killing the well, and can be used at the enterprises of the oil and gas industry underground and well workover
 The emulsifier for the preparation of invert emulsions / 2203130
The invention relates to emulsifiers, are able to form invert emulsions, which are used for enhanced recovery of oil
 The method of obtaining the emulsifier-stabilizer hydrophobic emulsion drilling fluids / 2201950
The invention relates to the field of chemicals used in drilling oil and gas wells, particularly to a process for the preparation of emulsifier-stabilizer, designed to obtain highly stable hydrophobic emulsion drilling fluids with high water content, which are used for drilling in mineral salts composition, unstable clayey rocks, at the opening of productive formations, killing Skagen
 The method of obtaining secondary butyl alcohol / 2206560
The invention relates to an improved process for the preparation of secondary butyl alcohol, which is an intermediate for the production of methyl ethyl ketone
 The method of obtaining second-butyl acetate / 2199521
The invention relates to an improved method for producing sec-butyl acetate is used as solvent for paints and varnishes and as raw material for the production of sec-butyl alcohol
 The method of obtaining second-butyl acetate / 2176239
The invention relates to chemical technology, in particular to a method for producing sec-butyl acetate (BWA), used as a solvent for paints and varnishes and for the production of sec-butyl alcohol
A method of obtaining a complex terpene esters / 2146242
The invention relates to an improved method for producing a complex terpene esters in the application of the solid catalyst
 Oxidation process resulting in production of alkenes and carboxylic acids / 2275351
Invention relates to improved C2-C4-alkane oxidation process to produce corresponding alkene and carboxylic acid, which process comprises bringing indicated alkane in oxidation reaction zone into contact with molecular oxygen-containing gas and corresponding alkene and optionally with water in presence of at least one catalyst efficient for oxidation of alkane into corresponding alkene and carboxylic acid. Resulting product contains alkene, carboxylic acid, and water, wherein alkene-to-carboxylic acid molar ratio in oxidation reaction zone is controlled or maintained at desired level by way of controlling alkene and optional water concentrations in oxidation reaction zone and also, optionally, controlling one or several from following parameters: pressure, temperature, and residence time in oxidation reaction zone. Invention also relates to integrated process of producing alkyl carboxylate including above-indicated stage of producing alkene and carboxylic acid in first reaction zone and stage of bringing, in second reaction zone, at least part of each of alkene and carboxylic acid obtained in first reaction zone in contact with each other in presence of at least one catalyst effective in production of alkyl carboxylate to produce the same. Invention further relates to production of alkenyl carboxylate including above-indicated stage of producing alkene and carboxylic acid in first reaction zone and stage of bringing, in second reaction zone, at least part of each of alkene and carboxylic acid obtained in first reaction zone plus molecular oxygen-containing gas into contact with each other in presence of at least one catalyst effective in production of alkenyl carboxylate to produce the same.
 Method for oxidation for preparing alkenes and carboxylic acids / 2276127
Invention relates to the improved method for oxidation of (C2-C4)-alkane and preparing the corresponding alkene and carboxylic acid. Method involves addition of this alkane to contact with molecular oxygen-containing gas in oxidative reaction zone and optionally at least one corresponding alkene and water in the presence of at least two catalysts with different selectivity. Each catalyst is effective in oxidation of alkane to corresponding alkene and carboxylic acid resulting to formation of product comprising alkene, carboxylic acid and water wherein the molar ratio between alkene and carboxylic acid synthesized in the reaction zone is regulated or maintained at the required level by regulation the relative amounts of at least two catalyst in the oxidative reaction zone. Also, invention relates to the combined method for preparing alkyl carboxylate comprising abovementioned stage in preparing alkene and carboxylic acid in the first reaction zone. Then method involves the stage for addition of at least part of each alkene and carboxylic acid prepared in the first reaction zone to the inter-contacting in the second reaction zone the presence of at least one catalyst that is effective in preparing alkyl carboxylate to yield this alkyl carboxylate. Also, invention relates to a method for preparing alkenyl carboxylate comprising the abovementioned stage for preparing alkene and carboxylic acid in the first reaction zone and stage for inter-contacting in the second reaction zone of at least part of each alkene and carboxylic acid synthesized in the first reaction zone and molecular oxygen-containing gas in the presence of at least one catalyst that is effective in preparing alkenyl carboxylate and resulting to preparing this alkenyl carboxylate.
 Method of obtaining alkylacetate / 2341514
Complex esters of carboxylic acids found application in paint-vanish and other branches of industry. Method of obtaining alkylacetate from acetic acid and alkene(s) C3-C5 or its(their) mixtures with saturated hydrocarbons is realised by contacting at higher temperature with solid strong-acid catalyst in one or several consecutive reaction zones with further separation of reaction mixture and isolation of concentrated alkylacetate by means of rectification, in which by regulation of reagent supply, temperature and cooling of flow(s) in each point of reaction zone(s) and on its (their) output, mole ratio acetic acid: alkene(s) not less than 1.2:1 and temperature not more than 120°C are supported, limitation of temperature is ensured by distributed supply of cold alkene-containing flow with temperature from minus 30 to plus 60°C into intermediate points of reaction zone(s) and/or between reaction zones possibly in combination with method(s) of cooling of reaction flows, selected from group, including: cooling reaction zone(s), cooling flows between reaction zones, cooling and recirculation of part of outgoing reaction mixture flow to input as minimum to first reaction zone.
 Method of alkene(s) and higher-boiling reagent reaction / 2357948
Invention refers to method of reaction of alkene(s) contained in hydrocarbon stream, and in a reaction-rectifying system provided with rectifying sections and in between reaction zones with subnatant catalyst. The fluid is poured from the top of each overlying zone to the bottom of underlying zone. It is followed with partial disperse passing of vapour flow from underlying zone through each reaction zone. Thus residual vapour flow from each underlying zone is backflow to the top of overlying reaction zone through overflow space to poured fluid. As a rule, higher-boiling reagent is nontertiary alcohol, carboxylic acid or benzene, while essential reaction product is ether, ester or alkylbenzene.
Silicon oxide based support, heteropolyacid catalyst based on said support and synthesis of esters in presence of heteropolyacid catalyst deposited on silicon oxide / 2395487
Invention relates to an improved method for synthesis of an ester through reaction of 1-olefin with a monobasic carboxylic acid and water in vapour phase in the presence of a heteropolyacid catalyst on silica gel, in which the silica gel support is in from of granules treated with water vapour at temperature between 100 and 300°C for a period of time between 0.1 to 200 hours, before or simultaneously with application of the heteropolyacid onto the support. The invention also relates to a heteropolyacid catalyst deposited on silica gel and to a method of preparing the catalyst, where the support is obtained by treating silica gel granules with water vapour at temperature between 100 and 300°C for a period of time between 0.1 and 200 hours, before or simultaneously with application of the heteropolyacid onto the support.
Catalyst and method of producing vinyl acetate from acetic acid and acetylene / 2464089
Invention relates to chemical catalysts for synthesis of vinyl acetate. Described is a catalyst for synthesis of vinyl acetate from acetic acid and acetylene, which contains zinc acetate and a support, wherein the support is Sibunit carbon consisting of microspherical nanoporous particles with size of 200-500 mcm. Described is a method of producing vinyl acetate from acetic acid and acetylene in the presence of the catalyst described above, characterised by that the method is realised at temperature 170-220°C, volume flow rate of acetylene of 0.54-0.84 l/cm3 (cat)·h, mass flow rate of acetic acid of 0.3-0.5 g/cm3 (cat)·h.
 Method of obtaining acylated alkoxylates of secondary alcohols and alkoxylates of secondary alcohols / 2510964
Invention relates to method of obtaining acylated alkoxylate of secondary alcohol of formula R1-C(O)-(OA)n-OR2(I), in which R1 is linear or branched alkyl group, including from 1 to 30 carbon atoms, optionally substituted cycloalkyl group, which includes from 5 to 30 carbon atoms, or optionally substituted aryl group, including from 6 to 30 carbon atoms, OA stands for one or several oxyalkylene fragments, which can be similar or different, n stands for integer number in the range from 0 to 70, and R2 is linear or branched alkyl group, including from 4 to 32 carbon atoms, optionally substituted cycloalkyl group, including from 5 to 32 carbon atoms, or optionally substituted bicycloalkyl group, including from 7 to 32 carbon atoms, where claimed method includes: (i) interaction of one or several olefins with internal double bond with one or several carboxylic acids in presence of catalytic composition with obtaining one or several ethers of carboxylic acid; (ii) interaction of one or several ethers of carboxylic acid, obtained at stage (i), with one or several alkylene oxide reagents in presence of catalytically efficient quantity of catalytic composition, which includes: (a) one or several salts of alkali earth metals and carboxylic acids and/or hydroxycarboxylic acids, which include 1-18 carbon atoms, and/or hydrates of the former; (b) oxygen-containing acid, selected from sulfuric acid and orthophosphoric acid; (c) alcohol, containing from 2 to 39 carbon atoms; and/or products of (a), (b) and/or (c) interactions with obtaining one or several acylated alkoxylates of secondary alcohols.
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We propose a method of obtaining converted drilling fluids containing a mixture of secondary esters, which consists in carrying out the reactions proceed in one or more carboxylic acids C1-C5to one or more olefins With3-C32in the presence of an acid catalyst having a molecular weight 198-282. The technical result is to reduce the viscosity, acceleration of biodegradation. 2 S. and 4 C.p. f-crystals, 11 tab., 3 Il.
The present invention relates to a method for interaction of olefins with carboxylic acids to produce a mixture containing secondary esters; mixtures of esters obtained by such methods, and the application of a mixture of esters.
It is known that carboxylic acids can join the olefins with obtaining secondary esters (this term means an ester in which the carbon atom of the alkyl chain attached to the carboxylate fragment is a secondary carbon atom, i.e., is an atom, covalently linked to two other carbon atoms, and not the primary or tertiary carbon, which is covalently linked to one of the three carbon atoms of sootwetstwii acid with obtaining secondary esters.
Known effective catalysts such esterification reactions can be metroselect, especially aluminum silicates (e.g., zeolites or zeolite mordenite) capable of exchanging cations, as well as layered clay in the hydrogen form. For esterification reactions such catalysts are often used in conjunction with added strong acids.
In the case of layered clays in the hydrogen ion form it is also known that, if the specified capable of cation exchange in clay layer is a metal cation, there is no need to add to the strong acid catalyst. The lack of strong acids reduces corrosivus the action of such clays and facilitates their separation from the reaction mixture.
Stable reference sandwiched clay, supports which are formed after the exchange of the natural cations of the clay to a more stable cations is known to be an effective catalyst for the formation of esters by the interaction of olefins with carboxylic acids.
It is also known that methyl esters of monocarboxylic acids can be used as a solid phase or part of the solid phase in the reversed drilling sludge.
Infusion is vozdaetsja significant decrease in the degree of oligomerization, in this reaction uses a catalyst that can be easily obtained and has a relatively long-term efficiency. The present invention also relates to the product of this reaction is the formation of esters, which can be used as a component of drilling mud.
The aim of the present invention is inverted emulsion drilling fluid comprising (a) dispersing phase containing a mixture of secondary esters selected from the group consisting of propellerblades, BUTYLCARBAMATE, intelcorporation, lexiscanlexiscan, heptylcyclohexyl, octylcarbinol, nonincorporated, decelerometers, undeclinable, dodecacarbonyl, tridecylbenzene, tetradecylbenzene, pentanecarboxylic, hexadecacarbonyl, heptadecafluorooctyl, octadecylammonium, nondeterminate, eicosyl-carboxylates, unabailable, diacetyltartaric-lats, their isomers and their mixtures, and in each of the secondary esters include carboxylate fragment containing 1-5 carbon atoms; (b) a filler; and (c) water.
Another objective of the present invention is a method of obtaining a secondary complex and mixtures thereof, with olefins selected from the group consisting of propene, butene, pentene, hexene, Heptene, octene, nonene, mission, undecene, dodecene, tridecene, tetradecene, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, anacosta, daikatana, their isomers and mixtures, in the presence of an acid catalyst.
Another objective of the present invention is to develop a method of using a mixture of secondary esters as dispersing phase or part of the dispersing phase inverted mud, and this mixture is produced by a process comprising a stage of interaction of carboxylic acids containing 1-5 carbon atoms, or their isomers or mixtures with olefins selected from the group consisting of propene, butene, pentene, hexene, Heptene, octene, nonene, mission, undecene, dodecene, tridecene, tetradecene, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, anacosta, daikatana, their isomers and mixtures in the presence of an acid catalyst, to obtain the secondary esters having a molecular weight 198-282.
Another objective of the present invention consists in the insertion tool to the drilling fluids, water-based, which is obtained by the method comprising stadionnymi from the group consisting of propene, butene, pentene, hexene, Heptene, octene, nonene, mission, undecene, dodecene, tridecene, tetradecene, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, anacosta, daikatana, their isomers and mixtures in the presence of an acid catalyst, to obtain the secondary esters having a molecular weight 198-282.
In Fig. 1 shows a diagram of a continuous action, used to obtain mixtures of secondary esters.
In Fig. 2 shows a chromatogram obtained by GC with PID, the mixture of the product obtained at this facility when working with 0,65 WHSV at 140oIn accordance with the procedure outlined in example 2.
In Fig. 3 shows the GC/PID chromatogram (obtained by gas chromatography using PID) of the mixture of products obtained in a batch reactor, the, when his work for 5 hours at 120oIn accordance with the procedure outlined in example 3.
The present invention relates to the use of acid catalysts, especially natural clay, washed dry (very low humidity) acid to catalyze the reaction of carboxylic acid C1-C5with the olefin. This method can and is about to conduct periodic or continuous manner at a temperature in the range of 60-300oC. Under continuous method, the volumetric rate is usually 0.1 to 5 WHSV. Some of the most unexpected properties of the present invention is the fact that the catalyst should almost never contain water for a successful reaction esterification; and almost complete elimination reaction of oligomerization of the olefin in the case when the concentration of carboxylic acid in the feed raw material is maintained at a value above 3 wt.%.
As hydrophobic synthetic liquid with a pour point of below 10oWith flash point above 120oC and a molecular weight close molecular weight hydrocarbon, C14-C20such synthetic mixtures can successfully function as dispersing phase or part of the dispersing phase turned brown solution. Because such mixtures are mixtures of esters, not hydrocarbons, they are faster biodegradation than synthetic hydrocarbons.
Another advantage of the present invention compared with esters, currently used in the drilling industry, is that can form a suitable ester mixture with a lower viscosity than when using traditional the acids, usually acids C12or more high molecular weight acids. When interacting with the branched alcohol With8or more severe alcohol which, in accordance with existing practice used to obtain the complex ester with a sufficiently low pour point of a, the resulting ester has a higher viscosity than the viscosity that can be achieved using the present invention.
The following examples do not limit the scope of the invention, illustrate various aspects of the different technical solutions of the present invention.
Example 1 Synthesis of propionate C14F-25 F-25 (Engelhard) was dried in a vacuum oven overnight at 200oWith the purpose of removal of water. Dried clay granules were loaded into the form of a fixed layer, through which, at 140oC and a flow rate of 0.5 WHSV, missed a mixture containing 50 mol.% propionic acid and 50 mol.% industrial 1-tetradecene. Method GC-analysis using the PID was found that the effluent contained 20% of secondary esters, about 10% propionic acid, about 70% of olefins, C14and less than 1% of oligomers C14. In the mixture the main complex ether was 2-tetradecylphosphonic, ministerpresident. Olefins, C14in the waste stream consisted of 70% of the linear internal olefins and 30% of alpha-olefins. Unreacted acid and olefins separated from the ester by distillation and returned for re-processing.
Example 2 Synthesis of propionate C14F-25 In accordance with the procedure described in example 1, F-25 (Engelhard) was dried and loaded into the reactor as a fixed layer. Through the layer at 140oC and a flow rate of 0.65 WHSV, missed a mixture containing 50 mol. % propionic acid and 50 mol.% industrial 1-tetradecene. The chromatogram shown in Fig.2, showing the peaks of the residual propionic acid and tetradecanol and secondary peaks of esters formed from tetradecanol and propionic acid. In accordance with the data of GC/PID analysis of the waste stream contained about 9% propionic acid, about 73% of tetradecanol and about 15% of secondary esters. Particularly noteworthy is the almost complete absence of peaks corresponding to the olefinic dimers, whose number according to the analysis of GC/PID accounted for only 1.8% of the amount of the mixture of products.
Example 3 Treatment 1-dodecene over Filtrol 105 in order To compare with the results obtained in example 2 steps. Sample 1-dodecene was stirred and heated with a catalyst at 120oC for 5 hours. According to GC/PID analysis of the effluent contained about 34% of the olefin C12monomer, 46% dimer and 20% of the trimer. When comparing the obtained results with the results of examples 1 and 2 can be seen that the presence in the incoming stream propionic acid, especially in the amount of more than about 3%, provides a level of content of the dimer on the value below 5%. The chromatogram shown in Fig.3, shows peaks corresponding to oligomers C12.
Example 4 Stop oligomerization reaction with propionic acid About 598 g of a mixture consisting of 67 mol.% 1-tetradecene and 33 mol.% propionic acid was heated and stirred at 140oWith the batch reactor, the 50 g of dry F-25 (Engelhard). 6, 5 hours, levels of secondary esters reached a maximum value of 20% in accordance with the data analysis, GC/PID, and the amount of olefin oligomers was 3% of the number of the reaction mixture. The content of esters has not been constant, and began to fall, there was a rapid increase in the number of olefin oligomer. For the first 7 hours of the reaction the contents of the PCC is pianoboy acid value <3% (according to the analysis of GC/PID) of the number of the reaction mixture had been a rapid increase in the content of olefin oligomer. Example 5 To assess the applicability of propionate14as the base fluid for the inverse emulsion drilling Evaluated the suitability of propionato C14for use as reversible drilling fluids. The inverse emulsion was prepared by combining the most part components with the main liquid, followed by stirring for 30 minutes at 120oF using a homogenizer Gifford Wood. The ingredients were added in the order shown in the following table 1, however, the last three substances were not added during a 30-minute loop in the homogenizer. Initially, a suspension of the homogenizer was transferred into a disperser, and then added barite, drilling solids and CaCl2and the resulting mixture was stirred for 30 minutes. Rheological properties of the resulting mud was determined at 120oF before and after hot rolling emulsion for 16 hours at 150oF. Drilling mud showed the following rheological results for the 120oF (see tab.2). Some physical properties of propionato C14below in the table.3. Example 6 Test for toxicity to Mysid Shrimp Additionally estimated nt limitation guidelines and new source performance standards: Drilling fluids toxicity test", Federal register, so 50, 165, 34631-34636. To the sample was considered to be unsatisfactory, the drilling fluid must have the LCso value in relation to Mysid Shrimp at least 30000 h/million Drilling fluid, obtained from propionato C14has a value LC50  1 000 000 ppm, which indicates that propionate SP are extremely non-lethal mud.
Example 7Synthesis of propionate C12using dried F-25 A mixture consisting of 50 mol.% propionic acid and 50 mol.% industrial 1-dodecene was passed over the same dried catalyst F-25 (Engelhard), as described in examples 1 and 2. The volumetric rate amounted to 0.35 WHSV, and the temperature of 140oC. According to the analysis of GC/PID effluent contained about 20% of secondary esters, about 10% propionic acid, about 70% of olefins, C12and less than 1% of oligomers C12. The main complex air in the mixture was 2-dodecylpropane, then in descending order followed a small number of 3-dodecylpropane, 4-dodecylpropane, 5 and 6-dodecylpropane. Unreacted acid and olefins separated from the ester by distillation and recycled for later use. Znachenieto C12using Amberlyst 15 A mixture consisting of 15 g of propionic acid, 40 g of 1-tetradecene and 15 g of Amberlyst 15 (Rohm and Haas), was stirred and heated at 140oC. After 30 minutes the reaction mixture contained 20% of tetradecylphosphonic and <1% olefin oligomers according to the analysis of GC/PID. As reaction the content of the oligomer was increased, the concentration of ester was decreased. Example 9 Synthesis of propionate C12using Amberlyst 15 A mixture containing 15 g of propionic acid, 40 g of 1-tetradecene and 15 g of Amberlyst 15 (Rohm and Haas), was stirred and heated to 120oC. After 1 hour the reaction mixture contained 31% of tetradecylphosphonic and <1% olefin oligomers in accordance with the data analysis GC/PID. In the course of the reaction the contents of the oligomer was increased and the content of ester was decreased. Example 10 Synthesis of propionate C12in the presence of Amberlyst 15 A mixture containing 15 g of propionic acid, 40 g of 1-tetradecene and 15 g of Amberlyst 15 (Rohm and Haas), was stirred and heated to 100oC. After 1.5 hours the reaction mixture contained 39% of tetradecylphosphonic and <1% olefin oligomers according to GC/PID analysis. Subsequent reaction of the content of the oligomer zoom is berlyst 15 A mixture containing 15 g of propionic acid, 40 g of 1-tetradecene and 15 g of Amberlyst 15 (Rohm and Haas), was stirred and heated to 80oC. After 8 hours the reaction mixture contained 45% of tetradecylphosphonic and <1% olefin oligomers according to GC/PID analysis. Subsequent reaction of the content of the oligomer was increased and the content of ester was decreased. Example 12 Synthesis of propionate C12in the presence of not F-25 Mixture of 8.1 g of 1-mission (1 equivalent) and 17.5 g of propionic acid (4 equivalents) and 4,72 g industrial clay F-25 (Engelhard), was stirred and heated to 120oC. (After receipt of clay from the supplier the clay is not dried in the oven.) The mixture was heated under reflux and not overheat above 120oC. After 5 days according to the analysis of GC/PID mixture contained 6.5% of esters. After that the fridge was removed and the vapor phase removed from the reaction vessel. For 2 hours the temperature was increased to 140oC and the resulting mixture contained 11% of esters. Even after 12 hours of reaction, the content of esters was 23%. Example 13 Synthesis of propionate C14in the presence of dried F-25 A mixture containing 30.0 g of 1-tetradecene (1 EQ.), 34,0 g propionic acid (Li to 140oC. the Mixture showed no signs of reflux distilled and easily reach an internal temperature of 140oC. After 20 h the mixture contained 35% of esters according to the analysis of GC/PID. The concentration of ester remained at this level even after additional stirring for 24 hours at the reaction temperature. Example 14 Synthesis of propionate C14in the presence of not F-62 Mixture of 20.0 g of 1-tetradecene (1 EQ.), 7,58 g propionic acid (1 EQ.) and 5.0 g of extrudate F-62 (Engelhard), was stirred and heated to 120oC. the Mixture was subjected to reflux distilled, which, after 20 hours of heating, according to the analysis of GC/PID formed only trace amounts of ester. Example 15 Synthesis of propionate C14in the presence of dried F-62 Mixture of 40.0 g of 1-tetradecene (1 EQ.), a 15.1 g of propionic acid (3 EQ.) and 16.3 g of extrudate F-62 (Engelhard) (which was heated in a vacuum oven for 20 hours at 200oC), stirred and heated to 140oC. After 19 h, the mixture contained 31% of esters according to the analysis of GC/PID. Continuing the reaction for an additional time did not lead to an increase in the amount of ester in the reaction mixture. Example arrasou 30 g (1 EQ.) tetradecanol (resulting from the isomerization of 1-tetradecene double bond), 34 g (3 EQ.) propionic acid and 10 g of dry clay Filtrol 105 (Engelhard) (which was heated in a vacuum furnace at 200oC for 20 h), was stirred and heated to 140oC. After 31 hours according to the analysis of GC/PID reaction mixture contained 23% of esters. In this process, we have obtained the same esters as in the case of 1-tetradecene as an initial matter, however, the distribution of isomeric propionato in this mixture differed from the corresponding distribution obtained in the reaction using 1-tetradecene as the starting olefin. Number 7-tetradecylphosphonic in this mix was a close number 2-tetradecylphosphonic, indicating a more even distribution of positions accession propionate group in comparison with the mixture obtained using 1-tetradecene as the starting olefin. Example 17 Synthesis of C18propionato using dried F-25 A mixture containing 664 g 1 octadecene (1 EQ.), 195 g of propionic acid (1 EQ.) and 51 g of dry F-25 (Engelhard) (which was heated in a vacuum oven for 20 hours at 200oC) , stirred and heated to 140oC. After 6 hours the mixture contained 19% of esters according to analize drilling emulsion The drilling fluid is prepared using a mixture of dodecylpropane as the base fluid had the following composition (see table.5). Drilling mud showed the following results in rheological measurements carried out at 120oF (see tab.6). Prior to hot rolling suspension had the following properties at the 35oF (see tab.7). In the test for toxicity to mysid shrimp suspension demonstrated the value LC50 1000000 hours/million SPP.
Some values of the physical properties of propionato C12presented in table.8.
Example 19Evaluation of the applicability of a mixture of propionate C12/C14as the base fluid for the inverse emulsion drilling The drilling fluid is formed using a mixture of dodecylpropane (50 wt.%) and tetradecylphosphonic (50 wt.%) as the base fluid had the following composition (see table.9). Drilling mud showed the following results in rheological measurements carried out at 120oF (see tab.10). Prior to hot rolling suspension had the following properties at the 35oF (see tab.11). In the test for toxicity to mysid shrimp suspension demonstrated the value LC50SO4 A mixture containing 20 g (1 EQ.) 1-tetradecene, 7.6 g (1 EQ.) propionic acid and 0.62 g of concentrated sulfuric acid was stirred and heated to 115oC. According to GC/PID analysis after 15 hours the reaction mixture contained 44% of secondary esters. Although the above was described several examples of embodiments of the present invention, the person skilled in the art should be borne in mind that the above specific technical solutions include various modifications and changes do not significantly violate the novelty and advantages of the invention. Accordingly, it should be borne in mind that such modifications and changes are covered by the scope of the invention as disclosed in the following claims.
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