阅读说明：本技术 一种电动压裂作业系统 (Electric fracturing operation system ) 是由 谢梅英 张弭 田雨 唐平 李泓杉 周恕毅 于 2020-04-26 设计创作，主要内容包括：本发明公开了一种电动压裂作业系统,包括储水设备、压裂设备、混配设备和混砂设备,所述储水设备为柔性水罐,所述柔性水罐与所述混配设备相连,所述压裂设备为若干个电驱压裂泵,所述混配设备用于混配压裂基液并存储至配液罐中,所述混砂设备的入口与所述配液罐、储砂输砂罐相连,所述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。该作业系统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。(The invention discloses an electric fracturing operation system which comprises a water storage device, a fracturing device, a mixing device and a sand mixing device, wherein the water storage device is a flexible water tank, the flexible water tank is connected with the mixing device, the fracturing device is provided with a plurality of electric fracturing pumps, the mixing device is used for mixing and storing fracturing base fluid into a fluid distribution tank, an inlet of the sand mixing device is connected with the fluid distribution tank and a sand storage and transportation tank, an outlet of the sand mixing device is connected with inlets of all the electric fracturing pumps through a low-pressure manifold, and outlets of all the electric fracturing pumps are connected with a wellhead through a high-pressure manifold. The operation system can improve the problem that the existing fracturing unit is large in size and weight, is economic and environment-friendly, can obviously reduce the fracturing construction cost, reduces the number of fracturing pumps, reduces the number of high-pressure-level high-pressure manifolds, and reduces the occupied area.)

1. The utility model provides an electronic fracturing operation system, its characterized in that includes fracturing equipment, water storage equipment, thoughtlessly joins in marriage equipment, mulling equipment, joins in marriage the fluid reservoir and stores up the defeated sand jar of sand, fracturing equipment includes a plurality of electricity and drives fracturing pump and fracturing frequency conversion room, water storage equipment with thoughtlessly join in marriage the equipment and link to each other, thoughtlessly join in marriage the equipment and be used for thoughtlessly joining in marriage fracturing base fluid and save to joining in marriage the fluid reservoir, join in marriage the fluid reservoir with the entry of mulling equipment links to each other, store up sand defeated sand jar with the entry of mulling equipment links to each other, the export of mulling equipment pass through the low pressure manifold with the entry of fracturing equipment links to each other, the export of fracturing equipment passes through the high pressure manifold and links to each other with the well head.

2. The electrical frac work system of claim 1, wherein a power source of the electrical frac work system is a utility grid or a power generation device.

3. The electrical frac work system of claim 1, wherein the water storage facility is a flexible water tank bank.

4. The electrical fracturing operation system of claim 2, wherein the electrical power provided by the utility grid or the power generation device enters a high voltage electricity distribution room which distributes the electrical power to a water storage facility and/or a fracturing facility and/or a blending facility and/or a sand blending facility and/or a fluid blending tank and/or a sand storage and sand transportation tank and/or a low voltage manifold and/or a high voltage manifold.

5. The electric fracturing operation system of claim 4, further comprising a command control center, wherein the command control center is powered by the high-voltage power distribution room, and the command control center respectively controls the water storage equipment, the fracturing equipment, the blending equipment, the sand blending equipment, the liquid distribution tank, the sand storage and sand transportation tank, the low-pressure manifold and the high-pressure manifold to work.

6. The electrical fracturing work system of claim 5, wherein the water storage and/or fracturing and/or blending and/or sand blending and/or fluid dispensing and/or sand storage and sand delivery and/or low pressure and/or high pressure manifolds are electrically driven.

7. The electrical fracturing operation system of any of claims 1 to 6, wherein the fracturing and compounding equipment is truck-mounted or skid-mounted.

8. The electric fracturing operation system of any one of claims 1 to 6, wherein each of the fracturing variable frequency rooms corresponds to one or two of the electrically driven fracturing pumps.

9. The electric fracturing operation system of any of claims 1 to 6, wherein the electrically driven fracturing pump is a three or five cylinder plunger pump.

10. The electrical frac work system of any one of claims 2-6, wherein the power generation device is one of a gas-generator set, a diesel-generator set, and a turbine-generator set.

11. The electric fracturing operation system of claim 1, wherein there are several water storage devices, and all the water storage devices are connected in series and then connected to the blending device.

12. The electric fracturing operation system of claim 1 or 5, wherein the liquid preparation tanks are connected in series and then connected with the sand mulling equipment.

13. The electrical fracturing operation system of claim 5, further comprising an acid tank and an acid supply device, wherein the acid tank supplies acid to the fracturing device through the acid supply device, and the acid supply device is electrically powered by the high voltage distribution room and controlled by the command and control center.

Technical Field

The invention relates to the technical field of oil and gas field fracturing, in particular to an electric fracturing operation system.

Background

Hydraulic fracturing is a main stimulation measure in the exploration and development of oil and gas fields, and is mainly characterized in that a fracturing pump is adopted to inject fracturing fluid into a shaft under high pressure to crack a stratum, so that the flowing environment of oil in the underground is improved, and the yield of an oil well is increased. After the fracturing operation is completed, the fracturing fluid base fluid returns to the ground, the fracturing propping agent is left in the formation cracks to prevent the cracks from closing, and a large amount of oil gas enters the shaft through the cracks to be exploited.

The fracturing construction operation equipment at the present stage mainly comprises a fracturing truck, a sand mixer truck, an instrument truck, a manifold piece, auxiliary equipment and the like. In construction, after mixing slickwater, propping agent and various additives into fracturing fluid, the fracturing fluid is supplied to a plurality of fracturing trucks through a connecting manifold; the fracturing truck pressurizes the fracturing fluid, collects the fracturing fluid through a high-pressure manifold and then injects the fracturing fluid into the bottom of the well; the instrument vehicle monitors, analyzes and records the whole operation process.

The current fracturing operation mode has the following defects: (1) the fracturing unit is bulky and heavy: the diesel engine drives the gearbox to drive the fracturing pump through the transmission shaft, so that the fracturing pump is large in size, heavy in weight, limited in transportation and low in power density; (2) is not environment-friendly: in the operation process of a well site, the fracturing equipment (a fracturing truck and a sand mixing truck) driven by a diesel engine can generate engine exhaust pollution and noise pollution, the noise exceeds 105dBA, and the normal life of surrounding residents is seriously influenced; (3) uneconomic: the fracturing equipment driven by the diesel engine has the advantages that the purchase cost at the initial stage of the equipment is higher, the unit power consumption cost is high when the equipment runs, and the daily maintenance cost of the engine and the gearbox is also high; (4) the occupied area is large: the diesel engine driven fracturing truck has small power and large quantity, so that the occupied area is large; (5) manifold many safety risks are big: the diesel engine driven fracturing truck has small power and large quantity, so that the connected high-pressure manifolds have large quantity and complex lines, the high-pressure manifolds have obvious vibration, and accidents such as damage, even burst and the like easily occur, so that the safety of equipment and personnel is threatened; (6) the fracturing water is inconvenient to store: a large amount of clear water is needed in hydraulic fracturing, a reservoir is dug conventionally or a large amount of water tanks with fixed capacity are used, the construction period of the dug water tank is long, the construction cost is high, the ground is not easy to recover, the number of the water tanks with fixed capacity is large, and the occupied area is large.

Disclosure of Invention

The invention aims to: in order to overcome the defects of the existing hydraulic fracturing operation mode, the electric fracturing operation system is provided, can solve the problems of large volume and heavy weight of the existing fracturing unit, is economic and environment-friendly, can obviously reduce the fracturing construction cost, reduces the number of fracturing pumps, reduces the number of high-pressure grade high-pressure manifolds, and reduces the occupied area.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an electronic fracturing operation system, includes fracturing equipment, water storage equipment, mixes equipment, mulling equipment, joins in marriage the fluid reservoir and the defeated sand jar of sand storage, fracturing equipment includes that a plurality of electricity drives fracturing pump and fracturing frequency conversion room, water storage equipment with it links to each other to mix equipment, it is used for mixing fracturing base fluid and stores to joining in marriage the fluid reservoir to mix equipment, join in marriage the fluid reservoir with the entry of mulling equipment links to each other or with the entry of fracturing equipment links to each other, the defeated sand jar of sand storage with the entry of mulling equipment links to each other, the export of mulling equipment pass through the low pressure manifold with the entry of fracturing equipment links to each other, the export of fracturing equipment passes through the high pressure manifold and links to each other with the well head.

The fracturing is realized by using an electrically-driven fracturing pump, a fracturing variable frequency room controls the rotating speed of the electrically-driven fracturing pump, a water storage device is used for storing clear water in fracturing operation, a blending device utilizes the clear water in the water storage device to blend fracturing base fluid and store the base fluid into a fluid distribution tank, the fracturing base fluid in the fluid distribution tank and fracturing sand in a sand storage and sand conveying tank are conveyed into a sand blending device, the sand blending device distributes the prepared fracturing fluid to each electrically-driven fracturing pump through a low-pressure pipeline, the electrically-driven fracturing pump pressurizes the low-pressure fracturing fluid into high-pressure fracturing fluid, and then the high-pressure fracturing fluid is pressed into a stratum through a high-pressure manifold and a wellhead, so that the stratum generates cracks, communicates with natural cracks of the stratum, enlarges an oil-gas channel and increases the yield of oil gas; in addition, when the liquid preparation tank is connected with the inlet of the electrically-driven fracturing pump, the prepared fracturing base liquid can be directly pressed into the stratum, so that the operation process without sand is realized; adopt the electricity to drive the fracturing pump and compare in diesel oil drive fracturing, small, the noise is little, and no exhaust emission pollutes, and is lower for diesel oil use cost, and the accessible increases electricity simultaneously and drives fracturing pump power, reduces required fracturing pump quantity, reduces the quantity of high-pressure manifold simultaneously, reduces area.

In a preferred embodiment of the present invention, the power source of the electric fracturing work system is a public power grid or a power generation device. The adoption of two power source forms is favorable for improving the adaptability of the electric fracturing operation system to the operation environment.

As a preferable scheme of the invention, the water storage equipment is a flexible water tank set. Clear water in the fracturing operation is stored through setting up flexible water pitcher, when possessing the large capacity that several times of conventional water pitcher, area is less than conventional water pitcher, and the mode of the folding transportation of accessible, reduces cost of transportation by a wide margin.

As a preferred scheme of the present invention, the electric energy provided by the utility grid or the power generation device enters a high voltage distribution room, and the high voltage distribution room distributes the electric energy to a water storage device and/or a fracturing device and/or a blending device and/or a sand blending device and/or a liquid blending tank and/or a sand storage and sand transportation tank and/or a low voltage manifold and/or a high voltage manifold. The electric energy is distributed to each electric device through a high-voltage power distribution room.

As a preferred scheme of the present invention, the electric fracturing operation system further includes a command control center, the command control center is powered by the high-voltage distribution room, and the command control center respectively controls the water storage device, the fracturing device, the blending device, the sand mixing device, the liquid distribution tank, the sand storage and transportation tank, the low-pressure manifold and the high-pressure manifold to operate. Therefore, the control center can be commanded to control the coordination work of the devices.

As a preferred scheme of the present invention, the water storage device and/or the fracturing device and/or the blending device and/or the sand blending device and/or the liquid preparation tank and/or the sand storage and sand transportation tank and/or the low pressure manifold and/or the high pressure manifold are electrically driven. Thus, full electric drive can be realized without hydraulic drive. By adopting the fully-electric fracturing equipment, the automatic control of the liquid supply and distribution equipment of the whole fracturing well site can be realized by arranging the sensor.

As a preferable scheme of the invention, the fracturing equipment and the mixing equipment are truck-mounted or skid-mounted. The fracturing equipment and the blending equipment adopt two mounting modes of vehicle mounting or skid mounting, and can adapt to different operating environments.

As a preferable scheme of the invention, each fracturing variable frequency room corresponds to one or two electrically-driven fracturing pumps. In actual use, each fracturing frequency conversion room can control 1-2 electrically-driven fracturing pumps to work, and the occupied site for arranging the fracturing frequency conversion rooms is favorably reduced.

As a preferable scheme of the invention, the electrically-driven fracturing pump is a three-cylinder or five-cylinder plunger pump.

As a preferable scheme of the invention, the power generation device is one of a gas generator set, a diesel generator set and a turbine generator set.

As a preferable scheme of the invention, a plurality of water storage devices are arranged, and all the water storage devices are connected in series and then connected with the mixing device. Through the combination of establishing ties of a plurality of water storage facilities, can increase and decrease water storage facilities's quantity according to the water yield condition, realize the storage of fracturing clear water jointly, it is more nimble convenient to use.

As a preferable scheme of the invention, a plurality of liquid preparation tanks are arranged, and all the liquid preparation tanks are connected in series and then connected with the sand mulling equipment. Through a plurality of fluid reservoir series combination of joining in marriage, can increase and decrease the quantity of joining in marriage the fluid reservoir according to the fracturing base fluid volume after thoughtlessly joining in marriage, it is more nimble convenient to use.

As a preferable scheme of the invention, the electric fracturing operation system further comprises an acid tank and acid supply equipment, the acid tank supplies acid to the fracturing equipment through the acid supply equipment, and the acid supply equipment is electrically supplied by the high-voltage power distribution room and controlled by the command and control center.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the fracturing is realized by using an electrically-driven fracturing pump, a fracturing variable frequency room controls the rotating speed of the electrically-driven fracturing pump, a water storage device is used for storing clear water in fracturing operation, a blending device utilizes the clear water in the water storage device to blend fracturing base fluid and store the base fluid into a fluid distribution tank, the fracturing base fluid in the fluid distribution tank and fracturing sand in a sand storage and sand conveying tank are conveyed into a sand blending device, the sand blending device distributes the prepared fracturing fluid to each electrically-driven fracturing pump through a low-pressure pipeline, the electrically-driven fracturing pump pressurizes the low-pressure fracturing fluid into high-pressure fracturing fluid, and then the high-pressure fracturing fluid is pressed into a stratum through a high-pressure manifold and a wellhead, so that the stratum generates cracks, communicates with natural cracks of the stratum, enlarges an oil-gas channel and increases the yield of oil gas; in addition, when the liquid preparation tank is connected with the inlet of the electrically-driven fracturing pump, the prepared fracturing base liquid can be directly pressed into the stratum, so that the operation process without sand is realized;

2. compared with diesel oil driven fracturing, the electrically-driven fracturing pump has the advantages of small volume, low noise, no exhaust emission pollution and lower use cost compared with diesel oil, and meanwhile, the number of required fracturing pumps can be reduced by increasing the power of the electrically-driven fracturing pump, the number of high-pressure manifolds can be reduced, and the occupied area can be reduced;

3. by adopting the fully-electric fracturing equipment, the automatic control of the liquid supply and distribution equipment of the whole fracturing well site can be realized by arranging the sensor.

Drawings

Fig. 1 is a schematic view of an electric fracturing operation system of the present invention.

Fig. 2 is a schematic view of another electric fracturing operation system of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The embodiment provides an electric fracturing operation system;

as shown in fig. 1, the electric fracturing operation system in this embodiment includes fracturing equipment, water storage equipment, mixes equipment, mulling equipment, joins in marriage the fluid reservoir and stores up the defeated sand jar of sand, fracturing equipment includes a plurality of electricity and drives fracturing pump and fracturing frequency conversion room, water storage equipment with it links to each other to mix equipment, it is used for mixing fracturing base fluid and store to joining in marriage in the fluid reservoir to mix equipment, join in marriage the fluid reservoir with the entry of mulling equipment links to each other, it links to each other with the entry of mulling equipment to store up the defeated sand jar of sand, the export of mulling equipment pass through the low pressure manifold with the entry of fracturing equipment links to each other, the export of fracturing equipment passes through the high pressure manifold and links to each other with the well head.

The fracturing is realized by using an electrically-driven fracturing pump, a fracturing variable frequency room controls the rotating speed of the electrically-driven fracturing pump, a water storage device is used for storing clear water in fracturing operation, a blending device utilizes the clear water in the water storage device to blend fracturing base fluid and store the base fluid into a fluid distribution tank, the fracturing base fluid in the fluid distribution tank and fracturing sand in a sand storage and sand conveying tank are conveyed into a sand blending device, the sand blending device distributes the prepared fracturing fluid to each electrically-driven fracturing pump through a low-pressure pipeline, the electrically-driven fracturing pump pressurizes the low-pressure fracturing fluid into high-pressure fracturing fluid, and then the high-pressure fracturing fluid is pressed into a stratum through a high-pressure manifold and a wellhead, so that the stratum generates cracks, communicates with natural cracks of the stratum, enlarges an oil-gas channel and increases the yield of oil gas; adopt the electricity to drive the fracturing pump and compare in diesel oil drive fracturing, small, the noise is little, and no exhaust emission pollutes, and is lower for diesel oil use cost, and the accessible increases electricity simultaneously and drives fracturing pump power, reduces required fracturing pump quantity, reduces the quantity of high-pressure manifold simultaneously, reduces area.

In this embodiment, a 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 favorable for improving the adaptability of the electric fracturing operation system to the operation environment. Specifically, a public power grid can be directly adopted for power supply in places where certain power facilities are well matched, and a power generation device is adopted for power supply in a power generation mode when certain remote places have no public power grid, so that the power supply is not limited by the conditions of the operation environment. Preferably, the power generation apparatus is one of a gas generator set, a diesel generator set and a turbine generator set.

In this embodiment, the water storage device is a flexible water tank set. Clear water in the fracturing operation is stored through setting up flexible water pitcher, when possessing the large capacity that several times of conventional water pitcher, area is less than conventional water pitcher, and the mode of the folding transportation of accessible, reduces cost of transportation by a wide margin.

In this embodiment, the electric energy provided by the utility grid or the power generation device enters a high-voltage distribution room, and the high-voltage distribution room distributes the electric energy to a water storage device and/or a fracturing device and/or a blending device and/or a sand blending device and/or a liquid blending tank and/or a sand storage and sand transportation tank and/or a low-voltage manifold and/or a high-voltage manifold. The electric power is distributed to each electric device through the high-voltage power distribution room, and the rotating speed of the electric driving fracturing pump is controlled through the fracturing frequency conversion room.

In this embodiment, the electric fracturing operation system further includes a command control center, the command control center is supplied with power by the high-voltage power distribution room, and the command control center respectively controls the water storage equipment, the fracturing equipment, the mixing equipment, the sand mixing equipment, the liquid distribution tank, the sand storage and transportation tank, the low-pressure manifold and the high-pressure manifold to work. Therefore, the coordination work of all the devices can be controlled through the command control center, and the whole hydraulic fracturing system can be monitored.

In this embodiment, the water storage device and/or the fracturing device and/or the blending device and/or the sand blending device and/or the liquid preparation tank and/or the sand storage and transportation tank and/or the low pressure manifold and/or the high pressure manifold are electrically driven. Thus, full electric drive can be realized without hydraulic drive.

In this embodiment, the fracturing equipment and the blending equipment are truck-mounted or skid-mounted. The fracturing equipment and the blending equipment adopt two mounting modes of vehicle mounting or skid mounting, can adapt to different operating environments, and are convenient for transportation and transfer of the equipment. Specifically, when the road surface condition of the operation position is better, a vehicle-mounted mode can be adopted; when the working position is in a snow covered area, a skid-mounted mode can be adopted.

In this embodiment, each fracturing frequency conversion room corresponds to one or two electrically-driven fracturing pumps. In practical use, each fracturing variable frequency room can control 1-2 electrically-driven fracturing pumps to work.

In this embodiment, the electrically driven fracturing pump is a three-cylinder or five-cylinder plunger pump. Preferably, the electrically driven frac pump has a power greater than or equal to 4500 HP. The power of the fracturing pump is made to be larger, the traditional multiple fracturing pump trucks can be replaced, the occupied area of a well site during fracturing operation can be greatly reduced, and connecting pipelines between fracturing equipment are greatly reduced.

In this embodiment, the number of the water storage devices is several, and all the water storage devices are connected in series and then connected with the mixing device. Through the combination of establishing ties of a plurality of water storage facilities, can increase and decrease water storage facilities's quantity according to the water yield condition, realize the storage of fracturing clear water jointly, it is more nimble convenient to use.

In this embodiment, the liquid preparation tanks are provided with a plurality of liquid preparation tanks, and all the liquid preparation tanks are connected in series and then connected with the sand mulling equipment. Through a plurality of fluid reservoir series combination of joining in marriage, can increase and decrease the quantity of joining in marriage the fluid reservoir according to the fracturing base fluid volume after thoughtlessly joining in marriage, it is more nimble convenient to use.

In this embodiment, join in marriage liquid jar group, flexible water jar group, electricity and drive sand mixing equipment and store up sand and carry the sand jar and set up in fracturing fluid preparation district, dispose fracturing fluid in fracturing fluid preparation district, fracturing fluid preparation district is the low-pressure zone, and the high-pressure zone is outside this district, makes operating system equipment overall arrangement optimize more, improves the operation security.

Example 2

This embodiment differs from embodiment 1 in that the fluid preparation tank is connected to the inlet of the fracturing unit. When the liquid preparation tank is connected with the inlet of the electrically-driven fracturing pump, the prepared fracturing base liquid can be directly pressed into the stratum, and the operation process without adding sand is realized.

Example 3

As shown in fig. 2, in this embodiment, on the basis of embodiment 1 or embodiment 2, the electric fracturing operation system further includes an acid tank and an acid supply device, where the acid tank supplies acid to the fracturing device through the acid supply device, and the acid supply device is electrically supplied with power from the high-voltage distribution room and controlled by the command and control center.

Example 4

In this embodiment, on the basis of embodiment 3, the water storage device and/or the liquid distribution tank and/or the sand storage and sand transportation tank and/or the low pressure manifold and/or the high pressure manifold are provided with sensors. By adopting the fully-electric fracturing equipment, the automatic control of the liquid supply and distribution equipment of the whole fracturing well site can be realized by arranging the sensor.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.