Composition for adjustment of bed penetrability |
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IPC classes for russian patent Composition for adjustment of bed penetrability (RU 2250369):
    
 Method for preparing and pumping into well multi-component technological systems and plant for realization of said method / 2250368
Method includes adjustment of pumping and dosing equipment on basis of amounts of components and their feeding time. Multi-component technological system is forced into well. Adjustment of pumping and dosing equipment is performed by means of frequency converters. Frequencies, set at frequency converter of forcing pump electric engine, at frequency converter of linker-feeding pump electric engine and at frequency converter of powdered polyacrylamide dosing pump electric engine are determined from mathematical formulae. Plant has drift dosage means for powdered polyacrylamide, drift dosage means for powdered components, two ejector mixers, mixing tank, forcing pump, linker tank. Electric engines of forcing pump, linker pump, first and second drift dosage devices are provided with frequency converters. First and second ejector mixers are provided with replaceable nozzles, with diameter 4.5-8.0 mm to provide for 150-250 m3/day plant productiveness.
Compound for water isolation of low-temperature beds / 2250367
Compound has carbomide, urotropine and water, additionally has chlorine iron with following relation of components in percents of mass: carbomide 6.0-16, urotropine 5.0-8.0, chlorine iron 5.0-10, water the rest.
Method for isolating fluid-influx area in a well / 2245988
Method includes forming a screen of viscous-elastic mass in well via interaction of working liquid pumped into well in form of alkali waste of kaprolaktam production or its solution, with influx liquid. Necessary speed of transformation of viscous-elastic mass and intensiveness of filling of well adjacent area with it is adjusted by mode of pressing of working liquid into influx zone. For this purpose pressure increase is alternated with pressure decrease. Pressure is decreased for 10-50% from achieved maximum pressure. Relation of exposure time for increased pressure to decreased pressure time is taken in limits 1.1-5.0.
 Method for blocking high-penetrable watered oil beds / 2244822
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum sulfate, chrome sulfate, iron sulfate, magnesium sulfate, copper sulfate or their mixtures, or their alums with common formula MIMIII(SO4).2
 Method for blocking high-penetrable watered oil beds / 2244821
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum acetate, chrome acetate, iron acetate, magnesium acetate, copper acetate, barium acetate, manganese acetate, calcium acetate or their mixtures.
 Method for blocking high-penetrable watered oil beds / 2244820
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum nitrate, chrome nitrate, iron nitrate, magnesium nitrate, barium nitrate, calcium nitrate or their mixtures.
Composition for confinement of water inflow into well / 2244819
Composition is made up of 90.0-95.0% sodium silicate solution with concentration 1.36 g/cm3 and silica modulus 3.0, 3.0-8.0% alkali metal silicofluoride, 1.0-4.0% wood flour, and 1.0-4.0% triacetine. Composition can be used during repair operations on oil production stings, when disabling formations, and when confining water inflow.
Hydrophobic agent for treatment on bottom area of formation / 2244818
Bottom area of formation is treated with hydrophobic agent, in particular solution of ethylene/vinyl acetate copolymer expressed by general formula [-CH2-CH2-C(CH3COO)H-CH2-]n, where n=7000-10000, in hydrocarbon solvent.
Method for isolating penetrable beds in a well / 2244803
Method includes pumping of portion of water-absorbing acryl polymer, exposure of it in a well, pumping of second portion of same polymer, tempered on fresh water with concentration 1-20%, buffer of fresh water dries up, and before and after pumping of second portion of water-absorbing polymer, tempered on hydrocarbon liquid with concentration 10-20%, buffer of hydrocarbon liquid is pumped in, besides, said 2-portion systems are pumped into well multiple times.
 Method of insulating formation water inflow / 2244115
Invention relates to insulating formation water inflow in gas and gas condensate wells with the aid of coltubing techniques. In particular, flexible conduit is descended through the tube space of well operated under pressure to the bottom with the aid of coltubing installation. Latches on tube and annulus spaces are opened. Well hole is filled through flexible conduit with gas condensate. Grouting mortar is prepared in preparation block by mixing cement mortar with setting retardant and mortar flowability enhancer in a calculated amount needed to prevent formation water inflow. Further, flushing fluid, e.g. methanol, is pumped through flexible conduit in amount constituting 0.3-0.6 volume of flexible conduit. Annulus space is closed and grouting mortar is pumped through flexible conduit in amount required to fill well hole in interval of water-inflow part of formation. When grouting mortar in hole rises to specified height, tube space is closed and grouting mortar contained in flexible conduit is forced into water-inflow part of formation by in series pumped flushing fluid and displacing solution: for example first methanol in amount 1.0-1.3 volumes of flexible conduit and then gas condensate in required amount, which however does not exceed internal volume of flexible conduit, until grouting mortar begins being pumped in amount of 0.3-0.5 volumes of flexible conduit. Then tube and annulus spaces of well are opened and gas condensate begins being simultaneously pumped into tube and annulus spaces in order to prevent rise of grouting mortar therein above interval of the water-inflow part of formation. Thereafter, bottom of flexible conduit is raised by 1 m above indicated interval and excess of grouting mortar is cut and washed away with gas condensate passed through flexible conduit into tube space, where excess grouting mortar remains in fluid state. After cement setting expectation time, flexible conduit is descended to the top of cement column and tests the latter for strength applying 4.0-5.0 kN loading by means of injector of coltubing installation through flexible conduit. Finally, cement bridging is subjected to hydraulic pressurization and flexible conduit is removed from well.
Method of insulating formation water inflow / 2244115
Invention relates to insulating formation water inflow in gas and gas condensate wells with the aid of coltubing techniques. In particular, flexible conduit is descended through the tube space of well operated under pressure to the bottom with the aid of coltubing installation. Latches on tube and annulus spaces are opened. Well hole is filled through flexible conduit with gas condensate. Grouting mortar is prepared in preparation block by mixing cement mortar with setting retardant and mortar flowability enhancer in a calculated amount needed to prevent formation water inflow. Further, flushing fluid, e.g. methanol, is pumped through flexible conduit in amount constituting 0.3-0.6 volume of flexible conduit. Annulus space is closed and grouting mortar is pumped through flexible conduit in amount required to fill well hole in interval of water-inflow part of formation. When grouting mortar in hole rises to specified height, tube space is closed and grouting mortar contained in flexible conduit is forced into water-inflow part of formation by in series pumped flushing fluid and displacing solution: for example first methanol in amount 1.0-1.3 volumes of flexible conduit and then gas condensate in required amount, which however does not exceed internal volume of flexible conduit, until grouting mortar begins being pumped in amount of 0.3-0.5 volumes of flexible conduit. Then tube and annulus spaces of well are opened and gas condensate begins being simultaneously pumped into tube and annulus spaces in order to prevent rise of grouting mortar therein above interval of the water-inflow part of formation. Thereafter, bottom of flexible conduit is raised by 1 m above indicated interval and excess of grouting mortar is cut and washed away with gas condensate passed through flexible conduit into tube space, where excess grouting mortar remains in fluid state. After cement setting expectation time, flexible conduit is descended to the top of cement column and tests the latter for strength applying 4.0-5.0 kN loading by means of injector of coltubing installation through flexible conduit. Finally, cement bridging is subjected to hydraulic pressurization and flexible conduit is removed from well.
Method for isolating penetrable beds in a well / 2244803
Method includes pumping of portion of water-absorbing acryl polymer, exposure of it in a well, pumping of second portion of same polymer, tempered on fresh water with concentration 1-20%, buffer of fresh water dries up, and before and after pumping of second portion of water-absorbing polymer, tempered on hydrocarbon liquid with concentration 10-20%, buffer of hydrocarbon liquid is pumped in, besides, said 2-portion systems are pumped into well multiple times.
Hydrophobic agent for treatment on bottom area of formation / 2244818
Bottom area of formation is treated with hydrophobic agent, in particular solution of ethylene/vinyl acetate copolymer expressed by general formula [-CH2-CH2-C(CH3COO)H-CH2-]n, where n=7000-10000, in hydrocarbon solvent.
Composition for confinement of water inflow into well / 2244819
Composition is made up of 90.0-95.0% sodium silicate solution with concentration 1.36 g/cm3 and silica modulus 3.0, 3.0-8.0% alkali metal silicofluoride, 1.0-4.0% wood flour, and 1.0-4.0% triacetine. Composition can be used during repair operations on oil production stings, when disabling formations, and when confining water inflow.
Method for blocking high-penetrable watered oil beds / 2244820
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum nitrate, chrome nitrate, iron nitrate, magnesium nitrate, barium nitrate, calcium nitrate or their mixtures.
Method for blocking high-penetrable watered oil beds / 2244821
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum acetate, chrome acetate, iron acetate, magnesium acetate, copper acetate, barium acetate, manganese acetate, calcium acetate or their mixtures.
Method for blocking high-penetrable watered oil beds / 2244822
Method includes pumping, in carrying liquid - waterless mixture of oil products containing waterless oil, of powder-like water-soluble polymer and connector in amount of 0.05-0.2% for mass of carrying liquid or 30-100% for mass of power-like water-soluble polymer, as said mixture a mixture of waterless oil and light oil products processed in relation 0.1:9.9-9.9:0.1 is used, and as connector - dry aluminum sulfate, chrome sulfate, iron sulfate, magnesium sulfate, copper sulfate or their mixtures, or their alums with common formula MIMIII(SO4).2
Method for isolating fluid-influx area in a well / 2245988
Method includes forming a screen of viscous-elastic mass in well via interaction of working liquid pumped into well in form of alkali waste of kaprolaktam production or its solution, with influx liquid. Necessary speed of transformation of viscous-elastic mass and intensiveness of filling of well adjacent area with it is adjusted by mode of pressing of working liquid into influx zone. For this purpose pressure increase is alternated with pressure decrease. Pressure is decreased for 10-50% from achieved maximum pressure. Relation of exposure time for increased pressure to decreased pressure time is taken in limits 1.1-5.0.
Compound for water isolation of low-temperature beds / 2250367
Compound has carbomide, urotropine and water, additionally has chlorine iron with following relation of components in percents of mass: carbomide 6.0-16, urotropine 5.0-8.0, chlorine iron 5.0-10, water the rest.
Method for preparing and pumping into well multi-component technological systems and plant for realization of said method / 2250368
Method includes adjustment of pumping and dosing equipment on basis of amounts of components and their feeding time. Multi-component technological system is forced into well. Adjustment of pumping and dosing equipment is performed by means of frequency converters. Frequencies, set at frequency converter of forcing pump electric engine, at frequency converter of linker-feeding pump electric engine and at frequency converter of powdered polyacrylamide dosing pump electric engine are determined from mathematical formulae. Plant has drift dosage means for powdered polyacrylamide, drift dosage means for powdered components, two ejector mixers, mixing tank, forcing pump, linker tank. Electric engines of forcing pump, linker pump, first and second drift dosage devices are provided with frequency converters. First and second ejector mixers are provided with replaceable nozzles, with diameter 4.5-8.0 mm to provide for 150-250 m3/day plant productiveness.
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FIELD: oil industry. SUBSTANCE: composition has zeolite-containing reagent - liquid waste of zeolite production - solution from zeolite crystallization, containing zeolite, sodium oxide Na2O, silicon oxide SiO2, aluminum oxide Al2O3, sodium sulfate Na2SO4 and water with following ratio of components in percents of mass: zeolite 2.0-5.0, Na2O 3.0-4.0, SiO2 1.5-6.0, Al2O3 - 0.3-0.4, Na2SO4 - 1.5-4.5, water the rest. EFFECT: higher efficiency. 2 tbl, 3 ex
The invention relates to the oil industry, in particular to methods of reducing the water content of products produced by blockage flooded collector and involvement in the development of new zones of the layer. There is a method of development of oil fields with application of the composition on the basis of nepheline and hydrochloric acid (patent RF №2089723, E 21 In 43/22, 1992). The share of nepheline in the composition ranges from 3-15%, hydrochloric acid 5-9%. The composition does not provide the necessary reduction in permeability of flooded collector. The closest to the technical nature of the claimed composition is a composition based on zeolite-containing reagent and hydrochloric acid (Avisual and other studies of the properties of the gel-forming composition based on the zeolite component. Petroleum engineering, No. 11, 1996, s). The disadvantages of this structure are: the use of expensive zeolite and corrosive reagent hydrochloric acid; the need for additional stages of dissolution of the zeolite in hydrochloric acid; the duration of gelation (4-170 h), from which the composition is quickly eroded by layer, without performing the function to regulate the permeability of the water-producing formation. The task of the invention is to reduce the corrosiveness of the composition, simplification of the way cooked what I composition, increase the effectiveness of the composition for reducing the permeability of the watered highly permeable reservoir and increasing the efficiency of oil production. This task is solved in that the composition for regulating the permeability of the reservoir, including zeolite-containing reagent, according to the invention, as the zeolite-containing reagent is used a liquid waste product of zeolites - the mother liquor from the crystallization of zeolite containing zeolite, sodium oxide (Na2O), silicon oxide (SiO2), aluminum oxide (Al2About3), sodium sulfate (Na2SO4and water in the following ratio, wt.%: zeolite - 2,0-5,0 Na2On - 3,0-4,0 SIO, SIS2- 1,5-6,0 Al2About3- 0,3-0,4 Na2SO4of 1.5 - 4.5 water - the rest As a liquid waste product of zeolites used the mother liquor from the crystallization of zeolite NaY (stage of maturation of the crystals of the zeolite), density 1060-1120 kg/m3having an alkaline environment (pH 12,0-13,0) and the following composition, wt.%: zeolite - 2,0-5,0 Na2On - 3,0-4,0 SIO, SIS2- 1,5-6,0 Al2About3- 0,3-0,4 Na2SO4of 1.5 - 4.5 water - the rest As can be seen, the proposed structure does not contain hydrochloric acid and other corrosive components, it does not require dissolution, because it is an aqueous solution in sukasana components, that simplifies the technology of pumping the proposed composition into the well. The proposed composition is a waste of a permanent production of zeolites and accumulates in the amount of 20 m3/day. Bridging effect caused by the interaction of the proposed structure with cations of alkaline-earth metals (CA+2and Mg+2)included in the mineralized formation water density 1065-1118 kg/m3and the rapid formation of poorly soluble in water, hydroxides, sulfates, silicates of calcium and magnesium (CA(Oh)2, SO4, MgSiO3). The ability of the proposed structure to the sedimentation was studied in laboratory conditions. Mixing of the components occurs instantaneous production of abundant gelatinous precipitate. As a result of the research (see table 1) found that a greater volume of sediment (80%) is produced by the interaction of produced water density 1118 kg/m3and liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY containing zeolite, sodium oxide, silicon oxide, aluminium oxide, sodium sulfate and water in the ratio: 2,0; 4,0; 6,0; 0,4; 4,5 wt.% and the rest of it. Moreover, the volume ratio of liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY and water was 1:0.5 in. The increase of the of Yama produced water and decrease its density reduces the volume of sludge. While the increase of the basic substance in a liquid waste product of zeolites is the mother solution from the crystallization of zeolites increases the amount of sediment. Evaluation of the bridging ability of the composition was carried out on the model layer representing artificial Sandstone with a diameter of 30 mm and a length of 150 mm were First determined the initial permeability model for formation water, then filtered liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY, and, after a certain time (16-24 h), was determined by the permeability of the treated porous medium. The pressure drop remained constant. The effect of isolation was calculated as follows:
Comparative data on bridging ability of artificial models of proposed and known compositions are shown in table 2. Example 1. A glass tube filled with quartz sand, has determined the initial permeability of the bulk core filtration of produced water density 1065 kg/m3then after the buffer to 20 ml of fresh water was added 50 ml of liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY containing zeolite, oxides of sodium, silicon, aluminum (Na2Oh, SIO, SIS2, Al2O3), sodium sulfate (Na2SO4), the water in the next soo is wearing: 2,0; 3,0; 1,5; 0,3; 1.5 and 91,7% by weight (see table 2, example 1), buf (20 ml fresh water), punching the reservoir with water. The filtration was stopped, the core was left for 24 hours for reaction, and then determined the final permeability of the artificial model the injection of produced water above density. Expected effect of the insulation. He was 80,25%. Examples 2 and 3, similar to example 1, wherein the composition of the liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY (see table 2, example 2) and the density of formation water (example 3 in table 3). It should be noted that to effect isolation of the artificial model largely influenced by the amount of the basic substance in a liquid waste product of zeolites is the mother solution from the crystallization of zeolite NaY and less density of formation water. The highest values (93,14%) effect of isolation was achieved by using liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY containing zeolite, Na2Oh, SIO, SIS2, Al2O3and Na2SO4in number: 5,0; 4,0; 6,0; 0.4 and 4.5 wt.% accordingly, when the density of the reservoir water 1118 kg/m3. While the application of known composition provides a smaller value of the effect of isolation - 64,62%. High seal efficiency of the proposed SOS is ava compared with well-known due to the formation of poorly soluble in water, sulfates and hydroxides of alkaline-earth metals (CaS4, MgS4, CA(Oh)2and also voluminous, gelatinous precipitation - silicates of alkaline-earth metals (CaSi4and others) contacting the liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY with mineralized formation water. While known composition forms only a weak gel, and gelation occurs for 4-120 hours Duration gelation of known composition in real well cause it to blur on the layer, the dilution of the produced water and, as a consequence, the reduction of the effect of isolation. In practice, the injection of the proposed composition into the reservoir to isolate aquifers is as follows. Tubing (tubing) down to the artificial slaughter and well washed. Then the tubing is lifted 10-15 m above the perforated interval, determine the acceleration of the reservoir, tubing pump 1-2 m3fresh water, then the calculated amount of liquid waste production of zeolites - the mother liquor from the crystallization of zeolite NaY, again pumped fresh water 0.3-0.5 m3. After that download and squeezing the liquid - waste water from the calculation of the punching shear of the total number matoon the solution of zeolites into the reservoir, leave the well in a closed condition at 16-24 h, and then washed, master and without additional perforation put into operation. Thus, the proposed structure is not corrosive reagent, does not require pre-dilution prior to injection into the well (easy to use) and provides high isolation effect of water (93,14%) at low cost, because it is a liquid waste product of zeolites.
The composition for regulating the permeability of the reservoir, including zeolite-containing reagent, characterized in that the zeolite reagent use a liquid waste product of zeolites - the mother liquor from the crystallization of zeolite containing zeolite, sodium oxide (Na2O), silicon oxide (SIO, SIS2), aluminum oxide (Al2About3), sodium sulfate (Na2SO4and water in the following ratio, wt.%: Zeolite 2,0-5,0 Na2About 3,0-4,0 SIO, SIS21,5-6,0 Al2About30,3-0,4 Na2SO41,5-4,5 Water the Rest
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