CN108003858A - A kind of method using brewery's vinasse volume increase - Google Patents

Abstract

The invention belongs to technical field of sewage, and in particular to a kind of method using brewery's vinasse volume increase.This method comprises the following steps：The pretreatment of vinasse；The pretreatment of solid distillers' grains；The thickening processing of vinasse；The pretreatment of vinasse separating liquid；The live injection stage of vinasse；Vinasse separating liquid scene injection stage；Closing well cultivation stage；Field test results evaluation phase.The present invention solves the problems, such as that vinasse processing cost is high and discharge brings environmental pollution；The present invention has the advantages that simple processing method, easy to operate, small investment, cost are low and spot effect is good at the same time, and the term of validity of field test is more than 5 years, and input-output ratio is more than 1: 10, and individual well, which averagely increases day by day, oily is more than 3t.Therefore, present invention is generally applicable in oily well stimulation.

Description

A method for increasing production by utilizing distiller's grains

technical field

The invention belongs to the technical field of sewage treatment, and in particular relates to a method for increasing production by utilizing distiller's grains.

Background technique

Distiller's grains are by-products of the brewing industry and the direct leftovers in the brewing process. They are rich in nutrients such as crude starch, crude fiber, crude protein, nitrogen-free extracts, crude fat, amino acids and various vitamins, trace elements, Bioactive substances such as enzymes.

According to statistics, my country's annual production of liquor distillers grains reaches tens of millions of tons, and the amount is large and concentrated. If it is not processed in time, it will deteriorate, not only wasting precious resources, but also seriously polluting the surrounding environment. Therefore, the comprehensive utilization of distiller's grains is of great significance to the resource development and environmental protection of our country.

At present, some achievements have been made in the research of distiller's grains in our country, for example, using distiller's grains to produce glycerin, cultivating edible fungi, extracting compound amino acids and trace elements, extracting phytic acid and calcium phytate, brewing vinegar, extracting protein, producing amylase and Cellulase is used to recover biogas by anaerobic fermentation of distiller's grains, to produce SCP feed, to produce activated carbon for sugar, and to ferment with lime as a dyeing reducing agent, which is used for the reproduction of original wine and applied externally for the treatment of arthritis. Recently, it has been reported that distiller's grains are used as raw materials to produce GABA with Lactobacillus brevis, and liquid distiller's grains can also be used to cultivate Bacillus thuringiensis, produce biogas, and recover waste heat. Using yellow water as a by-product of brewing to improve the quality of wine, etc., but except for being used as feed, other methods cannot fundamentally solve the problem of the final destination of distiller's grains, and may produce more distiller's grains, and the composition of distiller's grains is complex , high water content, difficult to store and difficult to utilize fermented fillers such as rice husks, so there are still certain difficulties in the utilization of distiller's grains.

Contents of the invention

The present invention provides a method for increasing production by utilizing distiller's grains in view of the deficiencies of the prior art. The method fully utilizes nutrients in distiller's grains to activate microorganisms in oil wells, and utilizes the effects of microorganisms and metabolites to increase the production of oil wells. The invention solves the problems of high processing cost of distiller's grains and environmental pollution caused by discharge; meanwhile, the invention has the advantages of simple processing technology, low investment cost and good oil increasing effect.

The invention discloses a method for increasing production by using distiller's grains in a distillery, which is characterized in that the method comprises the following steps:

(1) Pretreatment of distiller's grains

The distiller's grains are separated from solid and liquid to obtain solid distiller's grains and distiller's grains separated liquid.

(2) Pretreatment of solid distiller's grains

The solid distiller's grains are pulverized into uniform solid distiller's grains.

The particle size of the solid distiller's grains is related to the oil well permeability K, and the specific relationship is as follows:

① When K>2000mD, the particle size of the particulate matter is 10-50 mesh;

② When 1000mD<K≤2000mD, the particle size of the particulate matter is 50-100 mesh;

③When K≤1000mD, the particle size of the particulate matter is 100-150 mesh.

(3) Thickening treatment of distiller's grains

Adding a thickener and water to the solid distiller's grains for thickening treatment, the mass ratio of the thickener, solid distiller's grains and water is 1:5-8:20-30.

The thickener is polyacrylate or associative polyurethane.

(4) Pretreatment of distiller's grain separation liquid

Formation water is added to the distiller's grain separation liquid to obtain the pretreated distiller's grain separation liquid.

The volume ratio of the distiller's grain separation liquid to formation water is 1:1-2.

(5) On-site injection stage of distiller's grains

The thickened distiller's grains are injected from the oil well's oil casing annulus by a high-pressure plunger pump, and the thickened distiller's grains are used to block the high-permeability oil layer of the oil well to achieve the effect of water shutoff and expand the swept volume; at the same time, the nutrients in the distiller's grains are used The substance activates the biosurfactant and the microorganisms that produce biogas in the high permeability oil layer of the oil well, and the crude oil production of the high permeability oil layer of the oil well is increased by the action of the above microorganisms and their metabolites.

The permeability of the oil well is greater than 500mD, the temperature is lower than 100°C, and the oil layer is more than 2 layers.

The injection amount Q of distiller's grains after the thickening treatment is:

Q＝3.14R ² hΦβ

In the formula: Q-injection amount of distiller's grains after thickening treatment, m ³ ;

R-water blocking radius, m, the value range is 2-3m;

h - the effective thickness of the oil layer of the oil well, m;

Φ-reservoir porosity of oil well, dimensionless;

β-consumption coefficient, dimensionless, the value range is 0.1-0.2.

(6) On-site injection stage of distiller's grain separation liquid

After the on-site injection of distiller's grains is completed, the high-pressure plunger pump is used to inject the pretreated distiller's grains separation liquid from the oil well's oil casing annulus, and the nutrients in the distiller's grains separation liquid are used to activate the oxidation of hydrocarbons in the medium and low permeability oil layers of the oil well. Bacteria and bio-surfactant-producing bacteria use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, and use biosurfactants produced to reduce oil-water interfacial tension and oil-water mobility ratio in oil reservoirs, thereby improving the medium-to-low pressure of oil wells Crude oil production from penetrating reservoirs.

The injection amount of the pretreated distiller's grain separation liquid is 10-20m ³ per meter of oil layer thickness, and the injection speed is 5-10m ³ /h.

(7) Shut-in well cultivation stage

After the stage of on-site injection of distiller's grain separation liquid is completed, the oil well will be shut down and cultured for 15-20 days.

(8) Field test effect evaluation stage

After the field test is completed, the test effect is evaluated, and the evaluation indicators include validity period, enhanced recovery factor and input-output ratio.

The present invention firstly makes full use of the solid matter (particulate matter) in the distiller's grains after the thickening treatment to carry out the water plugging of the oil well, expands the swept volume of the injected water, thereby improving the crude oil output of the oil well; Fiber, crude protein, nitrogen-free extract, crude fat, amino acid and various vitamins, trace elements, enzymes and other biologically active substances) activate the biosurfactant and microorganisms that produce biogas in the high permeability oil layer of the oil well, using the above The role of microorganisms and their metabolites further improves the crude oil production of oil wells in high permeability reservoirs. Secondly, use the nutrients (residual starch, crude protein, cellulose, various inorganic salts and bacteria protein and other substances) in the distiller's grain separation liquid to activate the hydrocarbon oxidizing bacteria and produce surfactants in the medium and low permeability oil layers of the oil well Bacteria, use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, use the biosurfactant produced to reduce the oil-water interfacial tension in the oil layer, reduce the oil-water mobility ratio, thereby increasing the crude oil production in low-permeability oil layers in oil wells. The crude oil production of oil wells is increased through the combined action of distiller's grains and distiller's grains separation liquid. The invention solves the problems of high processing cost of distiller's grains and environmental pollution caused by discharge. At the same time, the invention has the advantages of simple processing technology, low investment cost and good field test effect.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

(1) The present invention solves the problem of distiller's grains that are difficult to deal with, achieves high efficiency, energy saving, low consumption, environmental protection, turns waste into wealth, and realizes the goal of circular economy;

(2) The present invention has simple processing method, easy and convenient operation, less investment, low cost, good on-site effect, the validity period of field test is greater than 5 years, the average daily oil increase of single well is greater than 3.0t, and the input-output ratio is greater than 1: 10. Therefore, it is conducive to the promotion and application of the field.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

Example 1

A method for increasing production using distiller's grains, the method comprising the following steps:

(1) Pretreatment of distiller's grains

The distiller's grains are separated from solid and liquid to obtain solid distiller's grains and distiller's grains separated liquid.

(2) Pretreatment of solid distiller's grains

The solid distiller's grains are pulverized into uniform solid distiller's grains.

The permeability of oil well B ₃₂ is 2200mD, and the particle size of the selected solid distiller's grains is 40 mesh.

(3) Thickening treatment of distiller's grains

Adding a thickener and water to the solid distiller's grains for thickening treatment, the mass ratio of the thickener, solid distiller's grains and water is 1:5:20.

The thickener is polyacrylate.

(4) Pretreatment of distiller's grain separation liquid

Formation water is added to the distiller's grain separation liquid to obtain the pretreated distiller's grain separation liquid.

The volume ratio of distiller's grain separation liquid to formation water is 1:1.

(5) On-site injection stage of distiller's grains

The thickened distiller's grains are injected from the oil well's oil casing annulus by a high-pressure plunger pump, and the thickened distiller's grains are used to block the high-permeability oil layer of the oil well to achieve the effect of water shutoff and expand the swept volume; at the same time, the nutrients in the distiller's grains are used The substance activates the biosurfactant and the microorganisms that produce biogas in the high permeability oil layer of the oil well, and the crude oil production of the high permeability oil layer of the oil well is increased by the action of the above microorganisms and their metabolites.

The permeability of oil well B ₃₂ is 2200mD, the temperature is 62°C, the oil layer is 3 layers, the effective thickness of the oil layer is 4.5m, and the porosity of the oil layer is 0.320.

The injection quantity Q of distiller's grains after thickening treatment is:

Q＝3.14R ² hΦβ＝3.14×2 ² ×4.5×0.320×0.16＝2.9m ³

In the formula: Q-injection amount of distiller's grains after thickening treatment, m ³ ;

R-water blocking radius, m, the value is 2m;

h - the effective thickness of the oil layer of the oil well, m;

Φ-reservoir porosity of oil well, dimensionless;

β-consumption coefficient, dimensionless, with a value of 0.16.

(6) On-site injection stage of distiller's grain separation liquid

After the on-site injection of distiller's grains is completed, the high-pressure plunger pump is used to inject the pretreated distiller's grains separation liquid from the oil well's oil casing annulus, and the nutrients in the distiller's grains separation liquid are used to activate the oxidation of hydrocarbons in the medium and low permeability oil layers of the oil well. Bacteria and bio-surfactant-producing bacteria use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, and use biosurfactants produced to reduce oil-water interfacial tension and oil-water mobility ratio in oil reservoirs, thereby improving the medium-to-low pressure of oil wells Crude oil production from penetrating reservoirs.

The injection volume of pretreated distiller's grain separation liquid is 10m ³ per meter of oil layer thickness, the total injection volume is 45m ³ , and the injection speed is 5m ³ /h.

(7) Shut-in well cultivation stage

After the stage of on-site injection of distiller's grain separation liquid is completed, the oil well will be shut down for 15 days of cultivation, and the oil well will be put into production after the shut-in cultivation time is over.

(8) Field test effect evaluation stage

After the field test is completed, the test effect is evaluated, and the evaluation indicators include validity period, enhanced recovery factor and input-output ratio.

After the field test, the water cut of oil well B ₃₂ dropped from 97.2% before the test to 84.3%, and the water cut dropped by 12.9 percentage points. The average daily oil increase of a single well was 3.7t. Good field test results have been obtained.

Example 2

A method for increasing production using distiller's grains, the method comprising the following steps:

(1) Pretreatment of distiller's grains

The distiller's grains are separated from solid and liquid to obtain solid distiller's grains and distiller's grains separated liquid.

(2) Pretreatment of solid distiller's grains

The solid distiller's grains are pulverized into uniform solid distiller's grains.

The permeability of oil well B ₃₅ is 2100mD, and the particle size of the selected solid distiller's grains is 45 mesh.

(3) Thickening treatment of distiller's grains

Adding a thickener and water to the solid distiller's grains for thickening treatment, the mass ratio of the thickener, solid distiller's grains and water is 1:6:26.

The thickener is associative polyurethane.

(4) Pretreatment of distiller's grain separation liquid

Formation water is added to the distiller's grain separation liquid to obtain the pretreated distiller's grain separation liquid.

The volume ratio of distiller's grain separation liquid to formation water is 1:1.5.

(5) On-site injection stage of distiller's grains

The thickened distiller's grains are injected from the oil well's oil casing annulus by a high-pressure plunger pump, and the thickened distiller's grains are used to block the high-permeability oil layer of the oil well to achieve the effect of water shutoff and expand the swept volume; at the same time, the nutrients in the distiller's grains are used The substance activates the biosurfactant and the microorganisms that produce biogas in the high permeability oil layer of the oil well, and the crude oil production of the high permeability oil layer of the oil well is increased by the action of the above microorganisms and their metabolites.

The permeability of oil well B ₃₅ is 2100mD, the temperature is 80°C, the oil layer is 3 layers, the effective thickness of the oil layer is 6.0m, and the porosity of the oil layer is 0.322.

The injection quantity Q of distiller's grains after thickening treatment is:

Q＝3.14R ² hΦβ＝3.14×3 ² ×6.0×0.322×0.10＝5.5m ³

In the formula: Q-injection amount of distiller's grains after thickening treatment, m ³ ;

R-water blocking radius, m, the value is 3m;

h - the effective thickness of the oil layer of the oil well, m;

Φ-reservoir porosity of oil well, dimensionless;

β-consumption coefficient, dimensionless, with a value of 0.10.

(6) On-site injection stage of distiller's grain separation liquid

After the on-site injection of distiller's grains is completed, the high-pressure plunger pump is used to inject the pretreated distiller's grains separation liquid from the oil well's oil casing annulus, and the nutrients in the distiller's grains separation liquid are used to activate the oxidation of hydrocarbons in the medium and low permeability oil layers of the oil well. Bacteria and bio-surfactant-producing bacteria use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, and use biosurfactants produced to reduce oil-water interfacial tension and oil-water mobility ratio in oil reservoirs, thereby improving the medium-to-low pressure of oil wells Crude oil production from penetrating reservoirs.

The injection volume of pretreated distiller's grain separation liquid is 15m ³ per meter of oil layer thickness, the total injection volume is 90m ³ , and the injection speed is 8m ³ /h.

(7) Shut-in well cultivation stage

After the on-site injection of distiller's grain separation liquid is completed, the oil well is shut down for 18 days of culture, and the oil well is put into production after the shut-in time is over.

(8) Field test effect evaluation stage

After the field test is completed, the test effect is evaluated, and the evaluation indicators include validity period, enhanced recovery factor and input-output ratio.

After the field test, the water cut of oil well B ₃₅ dropped from 97.0% before the test to 84.8%, and the water cut dropped by 12.2%. Good field test results have been obtained.

Example 3

A method for increasing production using distiller's grains, the method comprising the following steps:

(1) Pretreatment of distiller's grains

The distiller's grains are separated from solid and liquid to obtain solid distiller's grains and distiller's grains separated liquid.

(2) Pretreatment of solid distiller's grains

The solid distiller's grains are pulverized into uniform solid distiller's grains.

The permeability of oil well B ₃₇ is 2500mD, and the particle size of the selected solid distiller's grains is 30 mesh.

(3) Thickening treatment of distiller's grains

Adding a thickener and water to the solid distiller's grains for thickening treatment, the mass ratio of the thickener, solid distiller's grains and water is 1:8:30.

The thickener is associative polyurethane.

(4) Pretreatment of distiller's grain separation liquid

Formation water is added to the distiller's grain separation liquid to obtain the pretreated distiller's grain separation liquid.

The volume ratio of distiller's grain separation liquid to formation water is 1:2.

(5) On-site injection stage of distiller's grains

The thickened distiller's grains are injected from the oil well's oil casing annulus by a high-pressure plunger pump, and the thickened distiller's grains are used to block the high-permeability oil layer of the oil well to achieve the effect of water shutoff and expand the swept volume; at the same time, the nutrients in the distiller's grains are used The substance activates the biosurfactant and the microbes that produce biogas in the high permeability oil layer of the oil well, and the crude oil production of the high permeability oil layer of the oil well is increased by the action of the above microorganisms and their metabolites.

The permeability of oil well B ₃₇ is 2500mD, the temperature is 67°C, the oil layer has 3 layers, the effective thickness of the oil layer is 3.2m, and the porosity of the oil layer is 0.325.

The injection quantity Q of distiller's grains after thickening treatment is:

Q＝3.14R ² hΦβ＝3.14×3 ² ×3.2×0.325×0.20＝5.8m ³

In the formula: Q-injection amount of distiller's grains after thickening treatment, m ³ ;

R-water blocking radius, m, the value is 3m;

h - the effective thickness of the oil layer of the oil well, m;

Φ-reservoir porosity of oil well, dimensionless;

β-consumption coefficient, dimensionless, with a value of 0.2.

(6) On-site injection stage of distiller's grain separation liquid

After the on-site injection of distiller's grains is completed, the high-pressure plunger pump is used to inject the pretreated distiller's grains separation liquid from the oil casing annulus of the oil well, and the nutrients in the distiller's grains separation liquid are used to activate the oxidation of hydrocarbons in the medium and low permeability oil layers of the oil well. Bacteria and bio-surfactant-producing bacteria, use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, use the biosurfactant produced to reduce the oil-water interfacial tension in the oil layer, reduce the oil-water mobility ratio, thereby improving the medium and low oil wells Crude oil production from penetrating reservoirs.

The injection volume of pretreated distiller's grain separation liquid is 20m ³ per meter of oil layer thickness, the total injection volume is 64m ³ , and the injection speed is 10m ³ /h.

(7) Shut-in well cultivation stage

After the stage of on-site injection of distiller's grain separation liquid is completed, the oil well will be shut down for 20 days for cultivation, and the oil well will be put into production after the shut-in and cultivation time ends.

(8) Field test effect evaluation stage

After the field test is completed, the test effect is evaluated, and the evaluation indicators include validity period, enhanced recovery factor and input-output ratio.

After the field test, the water cut of oil well B ₃₇ dropped from 97.5% before the test to 84.8%, and the water cut dropped by 12.7 percentage points. The average daily oil increase of a single well was 4.0t, and the validity period was 6.3 years. Good field test results have been obtained.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. a method utilizing distiller's grains to increase production, is characterized in that, described method comprises the following steps: (1) Pretreatment of distiller's grains Separating distiller's grains from solid and liquid to obtain solid distiller's grains and distiller's grains separated liquid; (2) Pretreatment of solid distiller's grains Pulverize the solid distiller's grains into uniform solid distiller's grains; (3) Thickening treatment of distiller's grains Adding a thickener and water to the solid distiller's grains for thickening treatment, the mass ratio of the thickener, solid distiller's grains and water is 1:5-8:20-30; (4) Pretreatment of distiller's grain separation liquid adding formation water to the distiller's grain separation liquid to obtain the pretreated distiller's grain separation liquid; (5) On-site injection stage of distiller's grains The thickened distiller's grains are injected from the oil well's oil casing annulus by a high-pressure plunger pump, and the thickened distiller's grains are used to block the high-permeability oil layer of the oil well to achieve the effect of water shutoff and expand the swept volume; at the same time, the nutrients in the distiller's grains are used The substance activates the bio-surfactant and the microorganisms that produce gas in the high-permeability oil layer of the oil well, and uses the functions of the above-mentioned microorganisms and their metabolites to increase the crude oil production of the high-permeability oil layer of the oil well; (6) On-site injection stage of distiller's grain separation liquid After the on-site injection of distiller's grains is completed, the high-pressure plunger pump is used to inject the pretreated distiller's grains separation liquid from the oil well's oil casing annulus, and the nutrients in the distiller's grains separation liquid are used to activate the oxidation of hydrocarbons in the medium and low permeability oil layers of the oil well. Bacteria and bio-surfactant-producing bacteria use hydrocarbon oxidizing bacteria to degrade crude oil to reduce the viscosity of crude oil, and use biosurfactants produced to reduce oil-water interfacial tension and oil-water mobility ratio in oil reservoirs, thereby improving the medium-to-low pressure of oil wells Crude oil production from penetrating reservoirs; (7) Shut-in well cultivation stage After the stage of on-site injection of distiller's grain separation liquid is completed, the oil well will be shut down and cultured for 15-20 days, and the oil well will be put into production after the shut-in time is over; (8) Field test effect evaluation stage After the field test is completed, the test effect is evaluated, and the evaluation indicators include validity period, enhanced recovery factor and input-output ratio. 2. the method for utilizing distiller's grains to increase production according to claim 1, characterized in that the particle diameter of the solid distiller's grains is related to the oil well permeability K size, and the specific relationship is as follows: ① When K>2000mD, the particle size of the particulate matter is 10-50 mesh; ② When 1000mD<K≤2000mD, the particle size of the particulate matter is 50-100 mesh; ③When K≤1000mD, the particle size of the particulate matter is 100-150 mesh. 3. The method according to claim 1 or 2, characterized in that the thickener is polyacrylate or associative polyurethane. 4. The method for increasing production by using distiller's grains according to claim 1 or 2, characterized in that the volume ratio of the distiller's grains separation liquid to formation water is 1:1-2. 5. The method according to claim 1 or 2, characterized in that the permeability of the oil well is greater than 500mD, the temperature is lower than 100°C, and the oil layer is more than 2 layers. 6. The method for increasing production of distiller's grains according to claim 4, characterized in that the injection amount Q of distiller's grains after the thickening treatment is: Q＝3.14R ² hΦβ In the formula: Q-injection amount of distiller's grains after thickening treatment, m ³ ; R-water blocking radius, m, the value range is 2-3m; h - the effective thickness of the oil layer of the oil well, m; Φ-reservoir porosity of oil well, dimensionless; β-consumption coefficient, dimensionless, the value range is 0.1-0.2. 7. The method for increasing production by using distiller's grains according to claim 1 or 2, characterized in that the injection amount of the pretreated distiller's grains separation liquid is 10-20m ³ per meter of oil layer thickness. 8. The method for increasing production by using distiller's grains according to claim 7, characterized in that the injection rate of the pretreated distiller's grains separation liquid is 5-10 m ³ /h.