WO2021218590A1 - 一种电动压裂作业*** - Google Patents

一种电动压裂作业*** Download PDF

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Publication number
WO2021218590A1
WO2021218590A1 PCT/CN2021/086103 CN2021086103W WO2021218590A1 WO 2021218590 A1 WO2021218590 A1 WO 2021218590A1 CN 2021086103 W CN2021086103 W CN 2021086103W WO 2021218590 A1 WO2021218590 A1 WO 2021218590A1
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WIPO (PCT)
Prior art keywords
fracturing
equipment
mixing
electric
tank
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PCT/CN2021/086103
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English (en)
French (fr)
Inventor
谢梅英
张弭
田雨
唐平
李泓杉
周恕毅
Original Assignee
四川宏华石油设备有限公司
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Application filed by 四川宏华石油设备有限公司 filed Critical 四川宏华石油设备有限公司
Priority to US17/921,625 priority Critical patent/US20230175376A1/en
Publication of WO2021218590A1 publication Critical patent/WO2021218590A1/zh
Priority to CONC2022/0016863A priority patent/CO2022016863A2/es

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/2607—Surface equipment specially adapted for fracturing operations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/27—Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed

Definitions

  • the invention relates to the technical field of oil and gas field fracturing, in particular to an electric fracturing operation system.
  • Hydraulic fracturing is a major production stimulation measure in the exploration and development of oil and gas fields. It mainly uses fracturing pumps to inject fracturing fluid into the wellbore under high pressure to create fractures in the formation and improve the flow environment of oil underground, thereby increasing the production of oil wells. After the fracturing operation is completed, the fracturing fluid base fluid flows back to the ground, and the fracturing proppant is left in the formation cracks to prevent the cracks from closing, and a large amount of oil and gas enter the wellbore through the cracks to be exploited.
  • the current fracturing construction equipment is mainly composed of fracturing trucks, sand mixers, instrument trucks, manifolds and auxiliary equipment.
  • the sand mixer mixes slippery water, proppant and various additives into fracturing fluid, and then supplies multiple fracturing trucks through the connecting manifold;
  • the fracturing truck pressurizes the fracturing fluid and collects it through the high-pressure manifold Then it is injected into the bottom of the well; the instrument car monitors, analyzes and records the entire operation process.
  • the current fracturing operation mode has the following shortcomings: (1) The fracturing unit is large in size and weight: the diesel engine-driven gearbox drives the fracturing pump via the drive shaft, which is large in size, heavy in weight, limited in transportation, and low in power density; (2) Not environmentally friendly: Diesel engine-driven fracturing equipment (fracturing trucks and sand mixing trucks) will produce engine exhaust gas pollution and noise pollution during the operation of the well site.
  • an electric fracturing operation system in order to overcome the shortcomings of the current hydraulic fracturing operation mode, an electric fracturing operation system is provided, which can improve the problem of large volume and heavy weight of the existing fracturing unit, is economical and environmentally friendly, and can significantly reduce Fracturing construction costs, reducing the number of fracturing pumps, while reducing the number of high-pressure high-pressure manifolds, and reducing floor space.
  • An electric fracturing operation system including fracturing equipment, water storage equipment, mixing equipment, sand mixing equipment, liquid mixing tank and sand storage and transportation tank.
  • the fracturing equipment includes several electric drive fracturing pumps and pressure
  • the water storage equipment is connected to the mixing equipment, and the mixing equipment is used for mixing and storing the fracturing base fluid in the mixing tank.
  • the mixing tank and the sand mixing equipment The inlet is connected or connected to the inlet of the fracturing equipment, the sand storage tank is connected to the inlet of the sand mixing equipment, and the outlet of the sand mixing equipment is connected to the inlet of the fracturing equipment through a low pressure manifold The outlet of the fracturing equipment is connected to the wellhead through a high-pressure manifold.
  • the invention realizes fracturing by setting the electric drive fracturing pump, the fracturing frequency conversion room controls the speed of the electric drive fracturing pump, the water storage device stores the clean water in the fracturing operation, and the mixing equipment uses the clean water in the water storage device to perform
  • the fracturing base fluid is mixed and stored in the mixing tank, and the fracturing base fluid in the mixing tank and the fracturing sand in the sand storage and transportation tank are transported to the sand mixing equipment.
  • the fracturing fluid is distributed to the electric fracturing pumps through the low-pressure pipeline.
  • the high-pressure fluid is forced into the formation through the high-pressure manifold and wellhead, so that Fractures are generated in the formation to connect natural fractures in the formation, improve oil and gas passages, and increase oil and gas production; in addition, when the fluid distribution tank is connected to the inlet of the electric drive fracturing pump, the configured fracturing base can be directly hydraulically injected into the formation to achieve no
  • the operation process of fracturing sand Compared with diesel-driven fracturing, the electric drive fracturing pump is small in size, low in noise, and has no waste gas emission pollution. Compared with diesel, the use cost is lower. At the same time, the electric drive fracturing pump can be increased. Power to reduce the number of fracturing pumps required, while reducing the number of high-pressure high-pressure manifolds and reducing the floor space.
  • the power source of the electric fracturing operation system is a public power grid or a power generation device.
  • the adoption of two power source forms is beneficial to improve the adaptability of the electric fracturing operation system to the operating environment.
  • the water storage device is a flexible water tank group.
  • a flexible water tank By setting up a flexible water tank to store the clean water in the fracturing operation, it has a large capacity several times that of a conventional water tank, while it occupies less area than a conventional water tank, and can be folded and transported to greatly reduce transportation costs.
  • the electric energy provided by the public grid or power generation device enters the high-voltage power distribution room, and the high-voltage power distribution room distributes the electric energy to water storage equipment and/or fracturing equipment and/or mixing equipment and/or Or sand mixing equipment and/or liquid mixing tank and/or sand storage and transportation tank and/or low pressure manifold and/or high pressure manifold. Electric energy is distributed to various electrical equipment through the high-voltage power distribution room.
  • the electric fracturing operation system further includes a command and control center, the command and control center is powered by the high-voltage power distribution room, and the command and control center respectively controls the water storage equipment and the fracturing equipment , Mixing equipment, sand mixing equipment, liquid mixing tank, sand storage and transportation tank, low pressure manifold and high pressure manifold work. In this way, the coordinated work of various devices can be controlled through the command and control center.
  • the water storage equipment and/or fracturing equipment and/or mixing equipment and/or sand mixing equipment and/or liquid mixing tank and/or sand storage and transportation tank and/or low pressure manifold And/or the high-voltage manifold is electrically driven. In this way, full electric drive can be realized, without hydraulic drive.
  • the fracturing equipment and mixing equipment are vehicle-mounted or skid-mounted.
  • the fracturing equipment and the mixing equipment adopt two installation methods: vehicle-mounted or skid-mounted, which can adapt to different operating environments.
  • each fracturing frequency conversion room corresponds to one or two electric drive fracturing pumps.
  • each fracturing variable frequency room can control 1-2 electric drive fracturing pumps, which is beneficial to reduce the space occupied by the fracturing variable frequency room.
  • the electric drive fracturing pump is a three-cylinder or five-cylinder plunger pump.
  • the power generation device is one of a gas generator set, a diesel generator set and a turbine generator set.
  • the water storage devices there are several water storage devices, and all the water storage devices are connected in series with the mixing device.
  • the number of water storage devices can be increased or decreased according to the water volume, and the storage of fracturing clean water can be realized together, making the use more flexible and convenient.
  • liquid mixing tanks there are several liquid mixing tanks, and all liquid mixing tanks are connected in series with the sand mixing equipment.
  • the number of liquid distribution tanks can be increased or decreased according to the amount of fracturing base fluid after mixing, and the use is more flexible and convenient.
  • the electric fracturing operation system further includes an acid tank and an acid supply device.
  • the acid tank supplies acid to the fracturing device through the acid supply device, and the acid supply device is supplied by the acid
  • the high-voltage power distribution room is powered by electricity and is controlled by the command and control center.
  • the present invention realizes fracturing by setting the electric drive fracturing pump, the fracturing frequency conversion room controls the speed of the electric drive fracturing pump, the water storage equipment stores the clean water in the fracturing operation, and the mixing equipment uses the water storage equipment
  • the clean water is mixed with the fracturing base fluid and stored in the mixing tank, and the fracturing base fluid in the mixing tank and the fracturing sand in the sand storage and transportation tank are transported to the sand mixing equipment, and the sand mixing equipment will be configured.
  • the fracturing fluid is distributed to the electric fracturing pumps through low-pressure pipelines.
  • the high-pressure fluid is forced into the formation through the high-pressure manifold and wellhead.
  • fractures are generated in the formation, communicating with natural fractures in the formation, improving oil and gas channels, and increasing oil and gas production;
  • the configured fracturing base can be directly hydraulically inserted into the formation to achieve Operation process without fracturing sand;
  • electric fracturing pumps are smaller in size, less noise, and have no exhaust emission pollution. Compared with diesel, the use cost is lower. At the same time, the power of electric fracturing pumps can be increased to reduce the cost. The number of fracturing pumps required, while reducing the number of high-pressure-grade and high-pressure manifolds, and reducing floor space.
  • Figure 1 is a schematic diagram of the electric fracturing operation system in the present invention.
  • Figure 2 is a schematic diagram of another electric fracturing operation system in the present invention.
  • This embodiment provides an electric fracturing operation system
  • the electric fracturing operation system in this embodiment includes fracturing equipment, water storage equipment, mixing equipment, sand mixing equipment, liquid mixing tanks, and sand storage and transportation tanks.
  • the fracturing equipment includes Several electric drive fracturing pumps and fracturing frequency conversion rooms.
  • the water storage equipment is connected to the mixing equipment.
  • the mixing equipment is used to mix and mix the fracturing base fluid and store it in the mixing tank.
  • the liquid tank is connected to the inlet of the sand mixing device or connected to the inlet of the fracturing device, the sand storage tank is connected to the inlet of the sand mixing device, and the outlet of the sand mixing device passes through a low pressure pipe
  • the manifold is connected with the inlet of the fracturing equipment, and the outlet of the fracturing equipment is connected with the wellhead through a high-pressure manifold.
  • the invention realizes fracturing by setting the electric drive fracturing pump, the fracturing frequency conversion room controls the speed of the electric drive fracturing pump, the water storage device stores the clean water in the fracturing operation, and the mixing equipment uses the clean water in the water storage device to perform
  • the fracturing base fluid is mixed and stored in the mixing tank, and the fracturing base fluid in the mixing tank and the fracturing sand in the sand storage and transportation tank are transported to the sand mixing equipment.
  • the fracturing fluid is distributed to the electric fracturing pumps through the low-pressure pipeline.
  • the high-pressure fluid is forced into the formation through the high-pressure manifold and wellhead, so that Fractures are generated in the formation to connect natural fractures in the formation, improve oil and gas passages, and increase oil and gas production; in addition, when the fluid distribution tank is connected to the inlet of the electric drive fracturing pump, the configured fracturing base can be directly hydraulically injected into the formation to achieve no
  • the operation process of fracturing sand Compared with diesel-driven fracturing, the electric drive fracturing pump is small in size, low in noise, and has no waste gas emission pollution. Compared with diesel, the use cost is lower. At the same time, the electric drive fracturing pump can be increased. Power to reduce the number of fracturing pumps required, while reducing the number of high-pressure high-pressure manifolds and reducing the floor space.
  • the power source of the electric fracturing operation system is a public power grid or a power generation device.
  • the adoption of two power source forms is beneficial to improve the adaptability of the electric fracturing operation system to the operating environment.
  • the public power grid can be used directly in some places with relatively complete power facilities, and when there is no public power grid in some remote places, the power generation device can be used to generate power without being restricted by the operating environment.
  • the power generation device is one of a gas generator set, a diesel generator set and a turbine generator set.
  • the water storage device is a flexible water tank group.
  • a flexible water tank By setting up a flexible water tank to store the clean water in fracturing operations, it has a large capacity several times that of a conventional water tank, and at the same time, it occupies less area than a conventional water tank, and can be folded and transported to greatly reduce transportation costs.
  • the electric energy provided by the public grid or power generation device enters the high-voltage power distribution room, and the high-voltage power distribution room distributes the electric energy to water storage equipment and/or fracturing equipment and/or mixing equipment and/or mixing equipment.
  • the electric pole is connected to the public power grid or the power generation device to generate electricity.
  • the electric energy is distributed to various electrical equipment through the high-voltage power distribution room, and the speed of the electric drive fracturing pump is controlled through the fracturing frequency conversion room.
  • the electric fracturing operation system further includes a command and control center, the command and control center is powered by the high-voltage power distribution room, and the command and control center respectively controls the water storage equipment, fracturing equipment, and mixing equipment.
  • the water storage equipment and/or fracturing equipment and/or mixing equipment and/or sand mixing equipment and/or liquid mixing tank and/or sand storage and transportation tank and/or low pressure manifold and/or Or the high-voltage manifold is electrically driven. In this way, full electric drive can be realized, without hydraulic drive.
  • the fracturing equipment and mixing equipment are vehicle-mounted or skid-mounted.
  • the fracturing equipment and the mixed equipment adopt two installation methods: car-mounted or skid-mounted, which can adapt to different operating environments and facilitate the transportation and transfer of equipment. Specifically, when the working position is in good road conditions, the vehicle installation method can be adopted; when the working position is in a snowy area, the skid installation method can be adopted.
  • each of the fracturing variable frequency houses corresponds to one or two of the electric drive fracturing pumps.
  • each fracturing frequency conversion room can control 1-2 electric drive fracturing pumps.
  • the electric drive fracturing pump is a three-cylinder or five-cylinder plunger pump.
  • the power of the electric drive fracturing pump is greater than or equal to 4500HP.
  • the power of the fracturing pump can be made larger, which can replace multiple traditional fracturing pump trucks, greatly reducing the area occupied by the well site during fracturing operations, and greatly reducing the connecting pipelines between fracturing equipment.
  • the water storage devices there are several water storage devices, and all the water storage devices are connected in series with the mixing device.
  • the number of water storage devices can be increased or decreased according to the water volume, and the storage of fracturing clean water can be realized together, making the use more flexible and convenient.
  • liquid mixing tanks there are several liquid mixing tanks, and all liquid mixing tanks are connected in series with the sand mixing equipment.
  • the number of fluid distribution tanks can be increased or decreased according to the amount of fracturing base fluid after mixing, making the use more flexible and convenient.
  • the liquid distribution tank group, the flexible water tank group, the electric drive sand mixing equipment, and the sand storage and transportation tank are set in the fracturing fluid preparation area.
  • the fracturing fluid is configured in the fracturing fluid preparation area, and the fracturing fluid preparation area It is a low-pressure area, and the high-pressure area is located outside this area, which optimizes the layout of the operating system equipment and improves the safety of operations.
  • the electric fracturing operation system further includes an acid tank and an acid supply device.
  • the acid tank supplies the fracturing equipment through the acid supply device.
  • Acid the acid supply equipment is powered by the high-voltage power distribution room and controlled by the command and control center.

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Abstract

一种电动压裂作业***，包括储水设备、压裂设备、混配设备和混砂设备，储水设备为柔性水罐，柔性水罐与混配设备相连，压裂设备为若干个电驱压裂泵，混配设备用于混配压裂基液并存储至配液罐中，混砂设备的入口与配液罐、储砂输砂罐相连，混砂设备的出口通过低压管汇与所有的电驱压裂泵入口相连，所有的电驱压裂泵出口通过高压管汇与井口相连。该作业***可以改善现有压裂机组体积大重量大的问题，且经济环保，能显著降低压裂施工成本，减少压裂泵数量，同时减少高压力等级高压管汇的数量，减少占地面积。

Description

一种电动压裂作业***
本申请要求2020年04月26日提交中国专利局、申请号为202010338831.5、发明名称为“一种电动压裂作业***”的发明专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及油气田压裂技术领域，具体涉及一种电动压裂作业***。
背景技术
水力压裂是油气田勘探开发中一种主要的增产措施，主要是采用压裂泵在高压下将压裂液注入井筒使地层产生裂缝，改善油在地下的流动环境，从而增加油井产量。压裂作业完成后，压裂液基液返排回地面，压裂支撑剂则留在地层裂缝中防止裂缝闭合，大量油气经裂缝进入井筒被开采。
现阶段的压裂施工作业装备，主要由压裂车、混砂车、仪表车、管汇件及辅助装备等组成。在施工中混砂车将滑溜水、支撑剂和各种添加剂混合成为压裂液后，通过连接管汇供给多台压裂车；压裂车将压裂液进行加压，通过高压管汇汇集后注入井底；仪表车对作业全过程进行监控、分析与记录。
目前的压裂作业模式存在以下缺点：(1)压裂机组体积大重量大：柴油机驱动变速箱经传动轴驱动压裂泵，体积大、重量达，运输受限，功率密度小；(2)不环保：柴油发动机驱动的压裂设备(压裂车和混砂车)在井场运行过程中，会产生发动机废气污染和噪音污染，噪音超过105dBA，严重影响周围居民的正常生活；(3)不经济：柴油发动机驱动的压裂设备，设备初期的采购成本比较高，设备运行时单位功率消耗费用高，发动机和变速箱的日常维护保养费用也很高；(4)占地面积大：柴油机驱动的压裂车功率小、数量多，导致占地面积大；(5)管汇多安全风险大：柴油机驱动的压裂车功率小、数量多，导致连接的高压管汇数量多、线路复杂，高压管汇振动明显，极易出现损坏，甚至爆裂等事故，威胁设备与人员安全；(6)压裂用水存贮不便：水力压裂中需要大量的清水，常规是挖蓄水池或 者大量使用固定容量的水罐，挖水池建设周期长、造价高、地面不易恢复，使用固定容量的水罐数量多、占地面积大。
发明内容
本发明目的在于：为了克服目前水力压裂作业模式所存在的不足，提供一种电动压裂作业***，该***可以改善现有压裂机组体积大重量大的问题，且经济环保，能显著降低压裂施工成本，减少压裂泵数量，同时减少高压力等级高压管汇的数量，减少占地面积。
为了实现上述目的，本发明采用的技术方案为：
一种电动压裂作业***，包括压裂设备、储水设备、混配设备、混砂设备、配液罐和储砂输砂罐，所述压裂设备包括若干个电驱压裂泵和压裂变频房，所述储水设备与所述混配设备相连，所述混配设备用于混配压裂基液并存储至配液罐中，所述配液罐与所述混砂设备的入口相连、或者与所述压裂设备的入口相连，所述储砂输砂罐与所述混砂设备的入口相连，所述混砂设备的出口通过低压管汇与所述压裂设备的入口相连，所述压裂设备的出口通过高压管汇与井口相连。
本发明通过设置电驱压裂泵实现压裂，压裂变频房对电驱压裂泵转速的控制，储水设备来存储压裂作业中的清水，混配设备利用储水设备中的清水进行混配压裂基液并存储至配液罐中，而配液罐中的压裂基液、储砂输砂罐中的压裂砂输送至混砂设备中，混砂设备将配置好的压裂液通过低压管线分配给各电驱压裂泵，利用电驱压裂泵将低压压裂液加压为高压压裂液后，通过高压管汇和井口，将高压液体压入地层，从而使地层产生裂缝，沟通地层天然裂缝，提高油气通道，增加油气产量；另外，当配液罐与电驱压裂泵的入口相连时，可以直接将配好的压裂基液压入地层，实现不带压裂砂的作业工艺；采用电驱压裂泵相较于柴油驱动压裂，体积小、噪音小，无废气排放污染，相对于柴油使用成本更低，同时可通过增大电驱压裂泵功率，来减少所需压裂泵数量，同时减少高压力等级高压管汇的数量，减少占地面积。
作为本发明的优选方案，所述电动压裂作业***的动力源为公共电网 或发电装置。采用两种动力源形式，有利于提高该电动压裂作业***对作业环境的适应性。
作为本发明的优选方案，所述储水设备为柔性水罐组。通过设置柔性水罐来存储压裂作业中的清水，拥有数倍于常规水罐的大容量的同时，占地面积较常规水罐少，且可通过折叠运输的方式，大幅降低运输成本。
作为本发明的优选方案，所述公共电网或发电装置提供的电能进入高压配电房，所述高压配电房将电能分配给储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇。电能经高压配电房分配给各用电设备。
作为本发明的优选方案，所述电动压裂作业***还包括指挥控制中心，所述指挥控制中心由所述高压配电房供电，所述指挥控制中心分别控制所述储水设备、压裂设备、混配设备、混砂设备、配液罐、储砂输砂罐、低压管汇和高压管汇工作。如此可通过指挥控制中心来控制各个设备协调工作。
作为本发明的优选方案，所述储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇为电驱动。如此，可实现全电驱动，不使用液压驱动。
作为本发明的优选方案，所述压裂设备和混配设备为车装或橇装。压裂设备和混配设备采用车装或橇装两种安装方式，可以适应不同的作业环境。
作为本发明的优选方案，每个所述压裂变频房对应一个或两个所述电驱压裂泵。在实际使用中，每个压裂变频房可以控制1-2台电驱压裂泵工作，有利于减少布置压裂变频房所占用的场地。
作为本发明的优选方案，所述电驱压裂泵为三缸或五缸柱塞泵。
作为本发明的优选方案，所述发电装置为燃气发电机组、柴油发电机组和涡轮发电机组中的一种。
作为本发明的优选方案，所述储水设备有若干个，所有的所述储水设备串联后与所述混配设备相连。通过多个储水设备串联组合，可以根据水量情况，增减储水设备的数量，共同实现压裂清水的储存，使用更加灵活方便。
作为本发明的优选方案，所述配液罐有若干个，所有的配液罐串联后与所述混砂设备相连。通过多个配液罐串联组合，可以根据混配后的压裂基液量，增减配液罐的数量，使用更加灵活方便。
作为本发明的优选方案，所述电动压裂作业***还包括酸罐和供酸设备，所述酸罐通过所述供酸设备给所述压裂设备供酸，所述供酸设备由所述高压配电房电供电并由所述指挥控制中心控制。
综上所述，由于采用了上述技术方案，本发明的有益效果是：
1、本发明通过设置电驱压裂泵实现压裂，压裂变频房对电驱压裂泵转速的控制，储水设备来存储压裂作业中的清水，混配设备利用储水设备中的清水进行混配压裂基液并存储至配液罐中，而配液罐中的压裂基液、储砂输砂罐中的压裂砂输送至混砂设备中，混砂设备将配置好的压裂液通过低压管线分配给各电驱压裂泵，利用电驱压裂泵将低压压裂液加压为高压压裂液后，通过高压管汇和井口，将高压液体压入地层，从而使地层产生裂缝，沟通地层天然裂缝，提高油气通道，增加油气产量；另外，当配液罐与电驱压裂泵的入口相连时，可以直接将配好的压裂基液压入地层，实现不带压裂砂的作业工艺；
2、采用电驱压裂泵相较于柴油驱动压裂，体积小、噪音小，无废气排放污染，相对于柴油使用成本更低，同时可通过增大电驱压裂泵功率，来减少所需压裂泵数量，同时减少高压力等级高压管汇的数量，减少占地面积。
附图说明
图1为本发明中的电动压裂作业***示意图。
图2为本发明中的另一种电动压裂作业***示意图。
具体实施方式
下面结合附图，对本发明作详细的说明。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体 实施例仅用以解释本发明，并不用于限定本发明。
实施例1
本实施例提供一种电动压裂作业***；
如图1所示，本实施例中的电动压裂作业***，包括压裂设备、储水设备、混配设备、混砂设备、配液罐和储砂输砂罐，所述压裂设备包括若干个电驱压裂泵和压裂变频房，所述储水设备与所述混配设备相连，所述混配设备用于混配压裂基液并存储至配液罐中，所述配液罐与所述混砂设备的入口相连、或者与所述压裂设备的入口相连，所述储砂输砂罐与所述混砂设备的入口相连，所述混砂设备的出口通过低压管汇与所述压裂设备的入口相连，所述压裂设备的出口通过高压管汇与井口相连。
本发明通过设置电驱压裂泵实现压裂，压裂变频房对电驱压裂泵转速的控制，储水设备来存储压裂作业中的清水，混配设备利用储水设备中的清水进行混配压裂基液并存储至配液罐中，而配液罐中的压裂基液、储砂输砂罐中的压裂砂输送至混砂设备中，混砂设备将配置好的压裂液通过低压管线分配给各电驱压裂泵，利用电驱压裂泵将低压压裂液加压为高压压裂液后，通过高压管汇和井口，将高压液体压入地层，从而使地层产生裂缝，沟通地层天然裂缝，提高油气通道，增加油气产量；另外，当配液罐与电驱压裂泵的入口相连时，可以直接将配好的压裂基液压入地层，实现不带压裂砂的作业工艺；采用电驱压裂泵相较于柴油驱动压裂，体积小、噪音小，无废气排放污染，相对于柴油使用成本更低，同时可通过增大电驱压裂泵功率，来减少所需压裂泵数量，同时减少高压力等级高压管汇的数量，减少占地面积。
本实施例中，所述电动压裂作业***的动力源为公共电网或发电装置。采用两种动力源形式，有利于提高该电动压裂作业***对作业环境的适应性。具体的，在某些电力设施配套较完善的地方可直接采用公共电网供电，而在某些偏远地方无公共电网时，采用发电装置进行发电的方式供电，可以不受作业环境情况的限制。优选地，所述发电装置为燃气发电机组、柴油发电机组和涡轮发电机组中的一种。
本实施例中，所述储水设备为柔性水罐组。通过设置柔性水罐来存储 压裂作业中的清水，拥有数倍于常规水罐的大容量的同时，占地面积较常规水罐少，且可通过折叠运输的方式，大幅降低运输成本。
本实施例中，所述公共电网或发电装置提供的电能进入高压配电房，所述高压配电房将电能分配给储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇。通过电杆接入公共电网或者发电装置进行发电，电能经高压配电房分配给各用电设备，并通过压裂变频房实现对电驱压裂泵转速的控制。
本实施例中，所述电动压裂作业***还包括指挥控制中心，所述指挥控制中心由所述高压配电房供电，所述指挥控制中心分别控制所述储水设备、压裂设备、混配设备、混砂设备、配液罐、储砂输砂罐、低压管汇和高压管汇工作。如此可通过指挥控制中心来控制各个设备协调工作，同时可对整个水力压裂***进行监控。
本实施例中，所述储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇为电驱动。如此，可实现全电驱动，不使用液压驱动。
本实施例中，所述压裂设备和混配设备为车装或橇装。压裂设备和混配设备采用车装或橇装两种安装方式，可以适应不同的作业环境，方便设备运输转移。具体的，当作业位置路面情况较好时，可以采用车装方式；当作业位置处于积雪地带，可以采用橇装方式。
本实施例中，每个所述压裂变频房对应一个或两个所述电驱压裂泵。在实际使用中，每个压裂变频房可以控制1-2台电驱压裂泵工作。
本实施例中，所述电驱压裂泵为三缸或五缸柱塞泵。优选地，所述电驱压裂泵的功率大于或等于4500HP。将压裂泵的功率做得更大，可以取代传统的多台压裂泵车，可极大地减小压裂作业时井场占地面积，并大大地减少压裂设备之间的连接管线。
本实施例中，所述储水设备有若干个，所有的所述储水设备串联后与所述混配设备相连。通过多个储水设备串联组合，可以根据水量情况，增减储水设备的数量，共同实现压裂清水的储存，使用更加灵活方便。
本实施例中，所述配液罐有若干个，所有的配液罐串联后与所述混砂设备相连。通过多个配液罐串联组合，可以根据混配后的压裂基液量，增 减配液罐的数量，使用更加灵活方便。
本实施例中，配液罐组、柔性水罐组、电驱混砂设备和储砂输砂罐设置于压裂液制备区，在压裂液制备区配置压裂液，压裂液制备区为低压区，高压区位于此区域外，使作业***设备布局更加优化，提高作业安全性。
实施例2
如图2所示，本实施例在实施例1的基础上，所述电动压裂作业***还包括酸罐和供酸设备，所述酸罐通过所述供酸设备给所述压裂设备供酸，所述供酸设备由所述高压配电房电供电并由所述指挥控制中心控制。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的原理之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (13)

  1. 一种电动压裂作业***，其特征在于，包括压裂设备、储水设备、混配设备、混砂设备、配液罐和储砂输砂罐，所述压裂设备包括若干个电驱压裂泵和压裂变频房，所述储水设备与所述混配设备相连，所述混配设备用于混配压裂基液并存储至配液罐中，所述配液罐与所述混砂设备的入口相连、或者与所述压裂设备的入口相连，所述储砂输砂罐与所述混砂设备的入口相连，所述混砂设备的出口通过低压管汇与所述压裂设备的入口相连，所述压裂设备的出口通过高压管汇与井口相连。
  2. 根据权利要求1所述的电动压裂作业***，其特征在于，所述电动压裂作业***的动力源为公共电网或发电装置。
  3. 根据权利要求1所述的电动压裂作业***，其特征在于，所述储水设备为柔性水罐组。
  4. 根据权利要求2所述的电动压裂作业***，其特征在于，所述公共电网或发电装置提供的电能进入高压配电房，所述高压配电房将电能分配给储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇。
  5. 根据权利要求4所述的电动压裂作业***，其特征在于，所述电动压裂作业***还包括指挥控制中心，所述指挥控制中心由所述高压配电房供电，所述指挥控制中心分别控制所述储水设备、压裂设备、混配设备、混砂设备、配液罐、储砂输砂罐、低压管汇和高压管汇工作。
  6. 根据权利要求5所述的电动压裂作业***，其特征在于，所述储水设备和/或压裂设备和/或混配设备和/或混砂设备和/或配液罐和/或储砂输砂罐和/或低压管汇和/或高压管汇为电驱动。
  7. 根据权利要求1-6之一所述的电动压裂作业***，其特征在于，所述压裂设备和混配设备为车装或橇装。
  8. 根据权利要求1-6之一所述的电动压裂作业***，其特征在于，每个所述压裂变频房对应一个或两个所述电驱压裂泵。
  9. 根据权利要求1-6之一所述的电动压裂作业***，其特征在于，所述电驱压裂泵为三缸或五缸柱塞泵。
  10. 根据权利要求2-6之一所述的电动压裂作业***，其特征在于，所 述发电装置为燃气发电机组、柴油发电机组和涡轮发电机组中的一种。
  11. 根据权利要求1所述的电动压裂作业***，其特征在于，所述储水设备有若干个，所有的所述储水设备串联后与所述混配设备相连。
  12. 根据权利要求1或5所述的电动压裂作业***，其特征在于，所述配液罐有若干个，所有的配液罐串联后与所述混砂设备相连。
  13. 根据权利要求5所述的电动压裂作业***，其特征在于，还包括酸罐和供酸设备，所述酸罐通过所述供酸设备给所述压裂设备供酸，所述供酸设备由所述高压配电房电供电并由所述指挥控制中心控制。
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