The way of the development of oil deposits

 

(57) Abstract:

The way of the development of oil deposits, includes the cyclic injection into the formation via the injection well rims of water with the addition of foaming agents and rims of gas, the selection of oil through the production well, the foaming agents used biopolymer produced by the bacteria Pseudomonas Putida 110. Via the injection well rims of water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110 pumped in each cycle. The slug of water with a biopolymer produced by the bacteria Pseudomonas Putida 110 further comprises a nutrient solution with a suspension of live bacteria Pseudomonas Putida 110 with a concentration of 1107-5107cells/ml, and the nutrient solution contains the following components, g/l: K2HPO44,3; KH2PO43,4; (NH4)2SO44,0 MgSO47H2O - 0,5; CaCO30,3; NaCl -5,0; KCl-0,2; molasses 20,0 water the rest; pH of 7.0 to 7.2. Via the injection well rims of water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110 is injected only in the first cycle. Injection via the injection well of the rim water with the addition of biopolymer produced by the bacteria is via the injection well of the rim water with the addition of the biopolymer, produced by the bacteria pseudomonas Putida 110 produced in the first cycle, and the injection of the rim water with the addition of the nutrient solution with a suspension of Pseudomonas Putida 110 is made in the second cycle. 5 C.p. f-crystals.

The invention relates to the oil industry, in particular, to methods for development of oil deposits.

There is a method of developing a petroleum reservoir by injection of alternating fringes of solvent and dry gas. The disadvantage of this method is the rapid breakthrough of gas in the inhomogeneous layer.

Closest to the proposed invention to the technical essence and the achieved result is the way of the development of oil deposits, including cyclic injection into the formation via the injection well rims of water with the addition of foaming agents and rims of gas, the selection of oil through the production well. As the foaming agent used is a water-soluble surface active agent.

The disadvantage of this method is the low coefficient of oil recovery.

The aim of the invention is to increase oil recovery.

The aim is achieved in that in the method of development of oil deposits, enabling the society and rims gas, the selection of oil through the production well, as foaming agents used biopolymer produced by the bacteria Pseudomonas Putida 110.

In the method of injection through the injection well rims of water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110, can be produced in each cycle.

Rim water biopolymer produced by the bacteria Pseudomonas Putida 110 optionally contain a nutrient solution with a suspension of live bacteria Pseudomonas Putida 110 with a concentration of 1x107-5x107cells/ml; and the nutrient solution contains the following components, g/l: K2HPO44,3 KH2PO43,4 (NH4)2SO44,0 MgSO47H2O 0,5 CaCO30,3 NaCl 5,0 KCl 0.2 Molasses 20,0 Water the Rest of the solution pH 7,0-7,2

Adding a biopolymer produced by the bacteria Pseudomonas Putida 110, the rim water is produced only in the first cycle.

Adding a biopolymer produced by the bacteria Pseudomonas Putida 110 and the nutrient solution with a suspension of live bacteria in the rim of the water produced only in the first cycle.

Adding a biopolymer produced by the bacteria Pseudomonas Putida 110, the rim of the water produced in the first cycle, and adding a nutritional reptoobeboide substance use biopolymer, produced by the bacteria Pseudomonas Putida 110.

Getting biopolymer using culturing bacteria Pseudomonas Putida 110 is as follows.

The strain Pseudomonas Putida 110 deposited in Russian national collection of industrial microorganisms under the number WKN 6641.

To obtain the culture fluid, which then receive the biopolymer, the bacteria Pseudomonas Putida 110 are grown in a liquid medium of the following composition, g/l: K2NRA44,3; KN2RHO43,4; (NH4)2SO44; MgSO47 H2O 0,5; CaCO30,3; NaCl, 5; KCl 0.2, molasses 20, before liters of tap water; pH of 7.0 to 7.2. The culture is grown under the following conditions: temperature 29about; the pressure in the apparatus of 0.03 MPa; the amount of the air supplied to the apparatus of 0.5 volume of air to 1 volume of medium in one minute, and after 12 h of growth 1 volume 1 volume per minute. Duration of cultivation 16 h, the final pH of 4.5-5.0.

The polymer may be precipitated from the culture fluid four-fold volume of ethanol (characteristic of the polysaccharide). The polymer is better soluble in oil than in water and can be extracted from the culture fluid by oil and other organic solvents. Thus there is a large degree is based and emulsifying activity.

The composition of the nutrient solution used for injection of live bacteria suspensions of Pseudomonas Putida 110, g/l: K2NRA44,3; KN2RHO43,4; (NH4)2SO44; MgSO47H2O 0,5; CaCO30,3; NaCl, 5; KCl 0,2; molasses 20; water the rest; pH of 7.0 to 7.2.

The technical result is achieved at any concentration of the biopolymer in water lines.

Examples of specific implementations of the method.

Experiments were performed on a linear model of the bulk porous medium length 50 cm, diameter 3.5 cm, a permeability of 1 Darcy. As a model oil was used transformer oil.

P R I m e R 1. The displacement of transformer oil was carried out alternating fringes of water with the addition of nefteotgruzochnogo biopolymer prepared by microbiological method based producer of polymer strain of bacteria Pseudomonas Putida 110. The concentration of the biopolymer in water was 6 g/l Volume of each rim of the water was 0.1 of the pore volume. The volume of each rim of compressed gas was 0.05 from the pore volume. The eviction was carried out at a pressure of 1.4 MPa and a temperature of 20aboutC.

The result of the experiment were obtained following DCCE 3-

Horny volumes (20 GRT-

rock water with biopolymer - rum and 20 rims gas) 0,65

P R I m m e R 2. The displacement of transformer oil was carried out by alternating water fringes containing Nefteavtomatika biopolymer prepared on the basis of the producer of polymer strain of bacteria Pseudomonas Putida 110 with a concentration of 6 g/l nutrient solution with a suspension of the bacterial strain Pseudomonas Putida 110 with a concentration of 1 to 107cells/ml Volume of each rim aqueous solution was 0.1 pore volume. The volume of each rim of compressed gas was 0.05 pore volume. Davlenie and temperature are the same as in example 1.

The results of the experiment:

Deplorably coefficient of oil displacement 0,46

The coefficient of netdevices-

tion when pumping 3-

Horny volumes (20 GRT-

rock water with the addition of

biopolymer and nutrient solution and 20 rims gas) 0,66

P R I m e R 3. Similar to example 2, but nutrient solution with a suspension of the bacterial strain Pseudomonas Putida 110 took with a concentration of 3 to 107cells/ml.

The results of the experiment:

Deplorably coefficient of oil displacement 0,46

The coefficient of netdevices-

tion when pumping 3-

the global amount and m e R 4. Similar to example 2, but nutrient solution with a suspension of the bacterial strain Pseudomonas Putida 110 took with a concentration of 5 107cells/ml.

The results of the experiment:

Deplorably coefficient of oil displacement 0,46

The coefficient of netdevices-

tion when pumping 3-

global volumes (20 GRT-

rock water with the addition of bio-

polymer and the nutrient solution and 20 rims gas) 0,68

P R I m e R 5. The displacement of transformer oil was carried out by a rim of water with the addition of nefteotgruzochnogo biopolymer prepared by microbiological method based producer of polymer strain of bacteria Pseudomonas Putida 110. The concentration of the biopolymer in water was 6 g/L.

The amount of fringe was 0.1 pore volume of the model. Then the model was pumped striped rims nitrogen (to 0.05 pore volume) and water (0,1 pore volume). The displacement of transformer oil was carried out at a pressure of 1.4 MPa, a temperature of 20aboutC.

In the experiment the following data were obtained:

Deplorably oil displacement factor of 0.45

The coefficient of netdevices-

tion when pumping 3-

global volumes (20 rims of gas and 20 rims water) 0,62

P R OLIMAR, prepared on the basis of the producer of polymer strain of bacteria Pseudomonas Putida 110 concentration of 6 g/l nutrient solution with a suspension of the bacterial strain Pseudomonas Putida 110 with a concentration of 2 to 107cells/ml. Volume of the rim was 0.1 pore volume of the model. Then pumped striped rims nitrogen (to 0.05 pore volume) and water (0,1 pore volume). Pressure displacement amounted to 1.4 MPa, a temperature of 20aboutC.

The results of the experiment:

Deplorably oil displacement factor of 0.45

The coefficient of netdevices-

tion when pumping 3-

global volumes (20 Otoro - check gas and 20 rims water) 0,63

P R I m e R 7. The displacement of transformer oil was carried out as follows. In the first rim water, a volume of 0.1 pore volume, was added to the biopolymer prepared on the basis of the producer of polymer strain of bacteria Pseudomonas Putida 110 with a concentration of 6 g/l was Then added to the rim of nitrogen (to 0.05 pore volume). After that I downloaded the second rim water, which was added to nutrient solution with a suspension of the bacterial strain Pseudomonas Putida 110 with a concentration of 5 107cells/ml Then again pumped nitrogen. Next was carried out by the injection of alternating fringes water (with 0.1 pore volume) and azo is,45

The coefficient of netdevices-

tion when pumping 2 on the world volume of 0.64

P R I m e R 8. According to the prototype of the displacement of transformer oil was carried out alternating fringes of water with the addition of water-soluble surfactants (sultanol with a concentration of 0.5%)1 and nitrogen. The volume of each rim water with the addition of sulfinol was 0.1 pore volume of the model, nitrogen of 0.05 pore volume. Pressure displacement amounted to 1.4 MPa, a temperature of 20aboutC.

The results of the experiment:

Deplorably oil displacement factor of 0.25

The coefficient of netdevices-

tion when pumping 3-

global volumes (20 rims of gas and 20 rims water) 0,43

An advantage of the present invention in comparison with the prototype is to increase oil recovery. According to the results of experiments deplorably coefficient of oil displacement was increased 1.7-1.8 times, and the ratio of oil displacement when pumping 3 pore volumes (20 rims of gas and 20 rims of water) in 1,4 times.

1. The WAY of the development of OIL DEPOSITS, including cyclic injection into the formation via the injection well rims of water with the addition of foaming agents and rims of gas, oil extraction through mining square Pgeudomonas Putida 110.

2. The method according to p. 1, characterized in that the injection via the injection well rims of water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110 produced in each cycle.

3. The method according to p. 1, characterized in that the rim of the water with a biopolymer, producyruemy bacteria Pseudomonas Putida 110 further comprises a nutrient solution with a suspension of live bacteria Pseudomonas Putida 110 with a concentration of 1 to 1075 107cells/ml, and the nutrient solution contains the following components, g/l: K2HPO44,3; KH2PO43,4; (NH4)2SO44,0; MgSO47H2O 0,5; CaCO30,3; NaCI 5,0; KCI 0,2; molasses 20,0; water the rest; solution pH of 7.0 to 7.2.

4. The method according to p. 1, characterized in that the injection via the injection well rims of water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110 is produced only in the first cycle.

5. The method according to p. 1, characterized in that the injection via the injection well of the rim water with the addition of biopolymer produced by the bacteria Pseudomonas Putida 110 and the nutrient solution with a suspension of live bacteria is produced only in the first cycle.

6. The method according to p. 1, characterized in that the injection through magnetically the th cycle, and download fringe of water with the addition of the nutrient solution with a suspension of Pseudomonas Putida 110 is made in the second cycle.

 

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2 tbl, 3 ex

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