CN112723605A - Device and method for classifying, collecting and preprocessing measure return liquid - Google Patents
Device and method for classifying, collecting and preprocessing measure return liquid Download PDFInfo
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- CN112723605A CN112723605A CN202110021277.2A CN202110021277A CN112723605A CN 112723605 A CN112723605 A CN 112723605A CN 202110021277 A CN202110021277 A CN 202110021277A CN 112723605 A CN112723605 A CN 112723605A
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- fracturing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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Abstract
The invention belongs to the technical field of oilfield measure flowback fluid treatment, and particularly provides a measure flowback fluid classified collection pretreatment device and a measure flowback fluid classified collection pretreatment method, which comprises a fracturing and acidizing flowback fluid unloading unit, a fracturing and acidizing regulation unit, a well-flushing and workover flowback fluid unloading unit and a well-flushing and workover regulation unit, wherein the fracturing and acidizing flowback fluid unloading unit is connected with the fracturing and acidizing regulation unit, and the well-flushing and workover flowback fluid unloading unit is connected with the well-flushing and workover regulation unit, so that the problems of complicated subsequent process treatment, increased load and increased treatment cost caused by the fact that only one set of unloading system is arranged in the conventional pretreatment process, fracturing, acidizing, well-flushing and flowback fluid is unloaded into the same unloading tank for mixed treatment are solved, the problems of large amount of measure flowback fluid mixed unloading, entering the subsequent process, large water fluctuation, complicated water quality components, increased treatment difficulty and the like, reduces the dosage of the added medicament and the treatment cost.
Description
Technical Field
The invention belongs to the technical field of treatment of measure flowback fluid in oil fields, and particularly relates to a device and a method for classifying, collecting and pretreating measure flowback fluid.
Background
The measure backflow liquid is an important water resource, enters an extraction treatment system after treatment to be treated and reinjected or directly reinjected after reaching the standard, can reduce the corrosion of a ground system and ensure the stable operation of the ground system, can be used as a water injection source to reduce the exploitation amount of underground water, and is beneficial practice for environmental protection and waste water resource utilization. The measure flowback fluid is mainly waste water which can not be reused in the technical processes of oil field fracturing, acidizing, well workover and well flushing. The existing pre-process only sets one unloading system, and the fracturing, acidizing, well repairing and well washing flow-back fluid is unloaded into the same unloading tank.
Disclosure of Invention
The invention provides a device and a method for pretreating flowback fluid by classifying and collecting measures, and aims to solve the problems that in the prior art, only one set of unloading system is arranged in a pretreatment process, and fracturing, acidizing, well workover and well washing flowback fluid is unloaded into the same unloading tank, and due to the fact that the fracturing and acidizing flowback fluid has the characteristics of low pH, high mineralization, high viscosity and the like, the subsequent process treatment is complicated, the load is increased and the treatment cost is increased due to the mixed treatment with the well washing and workover flowback fluid.
Therefore, the invention provides a measure flowback liquid classified collection pretreatment device which comprises a fracturing and acidizing flowback liquid unloading unit, a fracturing and acidizing adjusting unit, a well-flushing and well-repairing flowback liquid unloading unit and a well-flushing and well-repairing adjusting unit, wherein the fracturing and acidizing flowback liquid unloading unit is connected with the fracturing and acidizing adjusting unit, and the well-flushing and well-repairing flowback liquid unloading unit is connected with the well-flushing and well-repairing adjusting unit.
Furthermore, the fracturing acidification flow-back liquid unloading unit and the well-flushing and well-repairing adjusting unit comprise water unloading tanks.
Furthermore, the fracturing and acidizing adjusting unit comprises a fracturing and acidizing adjusting water tank, and the well washing and well repairing adjusting unit comprises a well washing and well repairing adjusting water tank.
Further, the water discharge tank is made of steel.
Furthermore, the fracturing acidification adjusting water tank and the well washing and repairing adjusting water tank both adopt double-layer three-dimensional steel water tanks.
Furthermore, the fracturing and acidizing regulating water tank also comprises a dosing device, and the dosing device is connected with the fracturing and acidizing regulating water tank.
Further, the chemical feeding device feeds a gel breaker and a pH regulator into the fracture acidizing regulating water tank.
Further, still include sump oil recovery unit, the dirty oil recovery unit is all connected to fracture acidizing regulating reservoir and well-flushing workover regulating reservoir.
Furthermore, the number of the water discharging tanks of the fracturing acidification return liquid unloading unit and the well washing and repairing return liquid unloading unit is single or multiple, and the number of the fracturing acidification adjusting water tank and the well washing and repairing adjusting water tank is single or multiple.
A measure returns the liquid classification of flowing back and collects the preconditioning plant, adopt the measure to return the liquid classification of flowing back and collect the preconditioning plant, comprising the following steps:
1) the measure flowback fluid is divided into two types, one is fracturing and acidizing flowback fluid, and the other is well washing and well repairing flowback fluid; discharging the fracturing and acidizing flowback fluid into a water discharge tank of a fracturing and acidizing flowback fluid unloading unit, and discharging the well washing and workover flowback fluid into a water discharge tank of a well washing and workover flowback fluid unloading unit;
2) lifting the fracturing and acidizing flowback fluid in a water unloading tank of the fracturing and acidizing flowback fluid unloading unit into a fracturing and acidizing adjusting water tank for primary oil removal and turbidity reduction treatment, adding a gel breaker and a pH (potential of Hydrogen) regulator into the fracturing and acidizing flowback fluid subjected to the oil removal and turbidity reduction treatment, adjusting the viscosity and the pH value, and then feeding the mixture into a subsequent treatment unit;
and lifting the well washing and repairing return liquid in the well washing and repairing return liquid unloading unit into a well washing and repairing adjusting water tank for settlement, oil removal and turbidity reduction treatment, and then feeding the treated well washing and repairing return liquid into a subsequent treatment unit.
The invention has the beneficial effects that: the measure flowback fluid is divided into fracturing and acidizing flowback fluid and well washing and workover flowback fluid, the fracturing and acidizing flowback fluid is unloaded into a water unloading tank of a fracturing and acidizing flowback fluid unloading unit, and the well washing and workover flowback fluid is unloaded into a water unloading tank of a well washing and workover flowback fluid unloading unit; lifting the fracturing and acidizing flowback fluid in a water unloading tank of the fracturing and acidizing flowback fluid unloading unit into a fracturing and acidizing adjusting water tank for primary oil removal and turbidity reduction treatment, adding a gel breaker and a pH (potential of Hydrogen) regulator into the fracturing and acidizing flowback fluid subjected to the oil removal and turbidity reduction treatment, adjusting the viscosity and the pH value, and then feeding the mixture into a subsequent treatment unit; and lifting the well washing and repairing return liquid in the well washing and repairing return liquid unloading unit to a well washing and repairing adjusting water tank for settlement, oil removal and turbidity reduction treatment and then entering a subsequent treatment unit. The subsequent treatment process flow is simplified, and the subsequent treatment difficulty and treatment load are greatly reduced; the medicament cost and the treatment cost are effectively saved; the process effectively avoids the problems of large water quantity fluctuation, complex water quality components, increased treatment difficulty and the like caused by the fact that a large number of measures are taken to return mixed discharge and enter a subsequent flow, and the added medicament dosage and the treatment cost are increased.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic flow diagram of a device for classifying, collecting and pretreating a measure flowback liquid.
Detailed Description
Example 1:
as shown in figure 1, the measure flowback liquid classified collection pretreatment device comprises a fracturing and acidizing flowback liquid unloading unit, a fracturing and acidizing adjusting unit, a well-flushing and workover flowback liquid unloading unit and a well-flushing and workover adjusting unit, wherein the fracturing and acidizing flowback liquid unloading unit is connected with the fracturing and acidizing adjusting unit, and the well-flushing and workover flowback liquid unloading unit is connected with the well-flushing and workover adjusting unit.
The measure flowback fluid is divided into fracturing and acidizing flowback fluid and well washing and workover flowback fluid, the fracturing and acidizing flowback fluid unloading unit takes in the fracturing and acidizing flowback fluid, and the taken fracturing and acidizing flowback fluid enters the fracturing and acidizing adjusting unit for pretreatment after being lifted; the well washing and repairing return liquid unloading unit receives the well washing and repairing return liquid, and the received well washing and repairing return liquid is lifted and then enters the well washing and repairing adjusting unit for pretreatment; the pretreated flowback liquid enters a subsequent treatment unit, so that the subsequent treatment process flow is simplified, the subsequent treatment difficulty and treatment load are greatly reduced, and the problems of large water fluctuation, complex water quality components, increased treatment difficulty and the like caused by the fact that a large amount of measures are taken to mix and unload the flowback liquid and enter the subsequent flow are effectively avoided.
Example 2:
on the basis of embodiment 1, further, the fracture acidizing flow-back fluid unloading unit and the well-flushing and well-repairing adjusting unit both comprise water unloading boxes. The water discharge tank is used for meeting the drainage requirements of fracturing and acidizing flowback fluid.
Furthermore, the fracturing and acidizing adjusting unit comprises a fracturing and acidizing adjusting water tank, and the well washing and well repairing adjusting unit comprises a well washing and well repairing adjusting water tank. The fracturing and acidizing adjusting water tank is used for storing fracturing and acidizing flowback fluid, the well washing and workover adjusting water tank is used for storing well washing and workover flowback fluid, and the fracturing and acidizing adjusting water tank and the well washing and workover adjusting water tank both have the functions of preliminarily removing oil and reducing turbidity.
Further, the water discharge tank is made of steel. The steel water tank is convenient for construction.
Furthermore, the fracturing acidification adjusting water tank and the well washing and repairing adjusting water tank both adopt double-layer three-dimensional steel water tanks. Double-deck three-dimensional steel water tank possesses categorised accent and stores up the function, realizes preliminary settlement, deoiling, gel breaking, neutralization etc. preliminary treatment, can realize skid-mounted ization, modular design, realizes three-dimensional cloth station, reduces water tank area 50%, has shortened construction cycle.
Furthermore, the fracturing and acidizing regulating water tank also comprises a dosing device, and the dosing device is connected with the fracturing and acidizing regulating water tank. The chemical adding device is used for adding a chemical into the fracturing acidification adjusting water tank and adjusting the water quality of the fracturing acidification return liquid, is simple and high in automation degree, and is the existing equipment without being specifically introduced.
Further, the chemical feeding device feeds a gel breaker and a pH regulator into the fracture acidizing regulating water tank. The chemical feeding device carries out gel breaking and neutralization pretreatment on the fracturing acidification backflow liquid by adding a gel breaker and a pH regulator into the fracturing acidification regulating water tank, and the gel breaker and the pH regulator are selected and added according to actual needs, so that floating oil is removed, the suspended solid content is reduced, the viscosity of the measure backflow liquid is reduced, the pH value of the incoming water is regulated, the subsequent treatment process flow is simplified, and the subsequent treatment difficulty and treatment load are greatly reduced; effectively saves the medicament cost and the treatment cost.
Further, still include sump oil recovery unit, the dirty oil recovery unit is all connected to fracture acidizing regulating reservoir and well-flushing workover regulating reservoir. The dirty oil on the upper parts of the regulating water tanks (the fracturing acidification regulating water tank and the well-flushing and well-repairing regulating water tank) is collected and uniformly treated by a dirty oil recovery device, the centralization degree is high, and the environmental pollution is avoided.
Furthermore, the number of the water discharge tanks of the fracturing acidification return liquid unloading unit and the well washing and repairing return liquid unloading unit is single or multiple, and the number of the fracturing acidification adjusting water tanks and the well washing and repairing adjusting water tanks is single or multiple; the fracturing and acidizing flow-back liquid unloading unit, the well-flushing and well-repairing adjusting unit, the fracturing and acidizing adjusting water tank and the well-flushing and well-repairing adjusting water tank are selected according to actual conditions, the processing requirements of different scales are met, and the adaptability is high.
Example 3:
on the basis of embodiment 2, a measure flowback liquid classifying, collecting and preprocessing method is characterized in that: the device for classifying, collecting and pretreating the flowback liquid by adopting measures comprises the following steps:
1) the measure flowback fluid is divided into two types, one is fracturing and acidizing flowback fluid, and the other is well washing and well repairing flowback fluid; discharging the fracturing and acidizing flowback fluid into a water discharge tank of a fracturing and acidizing flowback fluid unloading unit, and discharging the well washing and workover flowback fluid into a water discharge tank of a well washing and workover flowback fluid unloading unit;
2) lifting the fracturing and acidizing flowback fluid in a water unloading tank of the fracturing and acidizing flowback fluid unloading unit into a fracturing and acidizing adjusting water tank for primary oil removal and turbidity reduction treatment, adding a gel breaker and a pH (potential of Hydrogen) regulator into the fracturing and acidizing flowback fluid subjected to the oil removal and turbidity reduction treatment, adjusting the viscosity and the pH value, and then feeding the mixture into a subsequent treatment unit; and lifting the well washing and repairing return liquid in the well washing and repairing return liquid unloading unit into a well washing and repairing adjusting water tank for settlement, oil removal and turbidity reduction treatment, and then feeding the treated well washing and repairing return liquid into a subsequent treatment unit. The subsequent processing units are existing processing units and are not described in detail herein.
The measure flowback liquid classified collection pretreatment method reduces the content of suspended solids, reduces the viscosity of measure flowback liquid, and adjusts the pH value of incoming water, the oil content of the effluent of a fracturing acidification adjusting water tank and a well-flushing and well-repairing adjusting water tank is less than or equal to 200mg/L, the content of suspended solids is less than or equal to 200mg/L, the viscosity is less than or equal to 3mpa · s, and the pH is 6-9, so that the subsequent treatment process flow is simplified, and the subsequent treatment difficulty and treatment load are greatly reduced; the process effectively saves the medicament cost and the treatment cost, and effectively avoids the problems of large water fluctuation, complex water quality components, increased treatment difficulty and the like caused by a large number of measures of returning the mixed unloading of the liquid and entering the subsequent flow, thereby increasing the dosage of the added medicament and the treatment cost.
In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," if any, are used in the sense of being interpreted as being based on the orientation or positional relationship shown in the drawings, and not as an indication or suggestion that the referenced device or element must have the particular orientation, configuration or operation in the particular orientation, and therefore the terms describing the positional relationship in the drawings are used for illustrative purposes only and are not to be construed as limiting the patent.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. The utility model provides a measure is returned flowing back categorised collection preprocessing device which characterized in that: the system comprises a fracturing and acidizing flow-back fluid unloading unit, a fracturing and acidizing adjusting unit, a well-flushing and workover flow-back fluid unloading unit and a well-flushing and workover adjusting unit; the fracturing and acidizing flowback liquid unloading unit is connected with the fracturing and acidizing adjusting unit, and the well-flushing and workover flowback liquid unloading unit is connected with the well-flushing and workover adjusting unit.
2. The device for classifying, collecting and pretreating the flowback liquid according to claim 1, wherein: and the fracturing acidification flowback liquid unloading unit and the well washing and repairing adjusting unit both comprise water unloading tanks.
3. The device for classifying, collecting and pretreating the flowback liquid according to claim 1, wherein: the fracturing and acidizing adjusting unit comprises a fracturing and acidizing adjusting water tank, and the well washing and workover adjusting unit comprises a well washing and workover adjusting water tank.
4. The process of claim 2, wherein the pretreatment device for separately collecting the flowback liquid comprises: the water discharge tank is made of steel.
5. The device for classifying, collecting and pretreating the flowback liquid according to claim 3, wherein: and the fracturing acidification adjusting water tank and the well washing and workover adjusting water tank both adopt double-layer three-dimensional steel water tanks.
6. The device for classifying, collecting and pretreating the flowback liquid according to claim 5, wherein: the fracturing and acidizing regulating water tank also comprises a dosing device, and the dosing device is connected with the fracturing and acidizing regulating water tank.
7. The device for classifying, collecting and pretreating the flowback liquid according to claim 6, wherein: and the chemical feeding device feeds a gel breaker and a pH regulator into the fracture acidizing regulating water tank.
8. The device for classifying, collecting and pretreating the flowback liquid according to claim 5, wherein: still include sump oil recovery unit, the dirty oil recovery unit is all connected to fracture acidizing regulating reservoir and well-flushing workover regulating reservoir.
9. The device for classifying, collecting and pretreating the flowback liquid according to claim 1, wherein: the fracturing acidification returns the discharge liquid and unloads unit, well-flushing workover and returns the discharge liquid and unloads the water tank quantity of unit and be single or a plurality ofly, and the quantity of fracturing acidification adjusting water tank and well-flushing workover adjusting water tank is single or a plurality ofly.
10. A measure flowback liquid classified collection pretreatment method is characterized in that: the device for classifying, collecting and pretreating the flowback liquid by adopting the measures of any one of claims 1 to 9, comprises the following steps of:
1) the measure flowback fluid is divided into two types, one is fracturing and acidizing flowback fluid, and the other is well washing and well repairing flowback fluid; discharging the fracturing and acidizing flowback fluid into a water discharge tank of a fracturing and acidizing flowback fluid unloading unit, and discharging the well washing and workover flowback fluid into a water discharge tank of a well washing and workover flowback fluid unloading unit;
2) lifting the fracturing and acidizing flowback fluid in a water unloading tank of the fracturing and acidizing flowback fluid unloading unit into a fracturing and acidizing adjusting water tank for primary oil removal and turbidity reduction treatment, adding a gel breaker and a pH (potential of Hydrogen) regulator into the fracturing and acidizing flowback fluid subjected to the oil removal and turbidity reduction treatment, adjusting the viscosity and the pH value, and then feeding the mixture into a subsequent treatment unit;
and lifting the well washing and repairing return liquid in the well washing and repairing return liquid unloading unit into a well washing and repairing adjusting water tank for settlement, oil removal and turbidity reduction treatment, and then feeding the treated well washing and repairing return liquid into a subsequent treatment unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110021277.2A CN112723605A (en) | 2021-01-08 | 2021-01-08 | Device and method for classifying, collecting and preprocessing measure return liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110021277.2A CN112723605A (en) | 2021-01-08 | 2021-01-08 | Device and method for classifying, collecting and preprocessing measure return liquid |
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| CN112723605A true CN112723605A (en) | 2021-04-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967401A (en) * | 2016-06-08 | 2016-09-28 | 中国石油天然气股份有限公司 | Method for preparing drilling fluid after treatment of flowback fluid of well shaft in oil field measure |
| CN206553311U (en) * | 2017-02-23 | 2017-10-13 | 中国石油天然气股份有限公司 | Flowing back processing system is returned in acidizing of oil-water well |
| CN214781145U (en) * | 2021-01-08 | 2021-11-19 | 长庆工程设计有限公司 | Liquid classified collection preprocessing device is returned in measure |
-
2021
- 2021-01-08 CN CN202110021277.2A patent/CN112723605A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967401A (en) * | 2016-06-08 | 2016-09-28 | 中国石油天然气股份有限公司 | Method for preparing drilling fluid after treatment of flowback fluid of well shaft in oil field measure |
| CN206553311U (en) * | 2017-02-23 | 2017-10-13 | 中国石油天然气股份有限公司 | Flowing back processing system is returned in acidizing of oil-water well |
| CN214781145U (en) * | 2021-01-08 | 2021-11-19 | 长庆工程设计有限公司 | Liquid classified collection preprocessing device is returned in measure |
Non-Patent Citations (2)
| Title |
|---|
| 杜杰等: "长庆油田措施返排液处理工程设计及应用", 内蒙古石油化工, no. 10, pages 31 - 32 * |
| 苏尚海;: "某油田含聚洗井液处理站项目可行性研究", 化学工程与装备, no. 01, pages 111 - 113 * |
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