WO2021051395A1

WO2021051395A1 - Turbine fracturing apparatus

Info

Publication number: WO2021051395A1
Application number: PCT/CN2019/107020
Authority: WO
Inventors: 张日奎; 吴义朋; 兰春强; 李心成; 李先策; 常胜; 纪晓磊; 毛竹青
Original assignee: 烟台杰瑞石油装备技术有限公司
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2021-03-25

Abstract

Provided is a turbine fracturing apparatus, comprising a transporting device (2), a turbine engine (5), a reduction gearbox (6), a transmission mechanism (7) and a fracturing pump (8), the output end of the turbine engine (5) is connected with one end of the reduction gearbox (6), the other end of the reduction gearbox (6) is in transmission connected with the fracturing pump (8) through the transmission mechanism (7), the transportation device (2) is used for bearing the turbine engine (5), the reduction gearbox (6), the transmission mechanism (7) and the fracturing pump (8), the transportation device (2) comprises a chassis, the chassis is provided with a transporting section, a bearing section and a lapping section which are connected in sequence, when the turbine fracturing apparatus is in a working state, the bearing section can be contacted with the ground, when the turbine fracturing apparatus is in a transporting state, the bearing section does not make contact with the ground.

Description

Turbine fracturing equipment

Technical field

The invention relates to the field of oil and gas field operations, in particular to a turbine fracturing equipment.

Background technique

In the global oil and gas field fracturing operation sites, there are two main driving methods for fracturing equipment:

The first driving method is diesel engine driving. The specific scheme is that the diesel engine is connected to the gearbox to drive the fracturing pump through the drive shaft. In other words, the power source is a diesel engine, the transmission device is a gearbox and a drive shaft, and the actuator is a fracturing pump. .

The configuration mode has the following disadvantages:

(1) Large volume and weight: The diesel engine drives the gearbox via the drive shaft to drive the fracturing fracturing pump, 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 will produce engine exhaust gas pollution and noise pollution during the operation of the well site. The noise exceeds 105dBA, which seriously affects the normal life of surrounding residents.

(3) Uneconomical: For fracturing equipment driven by diesel engines, the initial purchase cost of the equipment is relatively high, the cost of fuel consumption per unit power during the operation of the equipment is high, and the daily maintenance costs of the engine and gearbox are also high.

The second driving method is electric fracturing. The specific plan is to connect a motor to a drive shaft or a coupling to drive the fracturing pump. In other words, the power source is an electric motor, the transmission device is a drive shaft or coupling, and the actuator is a fracturing pump.

Although electric fracturing has many advantages, the power supply of the fracturing well site is a prerequisite for the implementation of electric fracturing. Under normal circumstances, the power supply problem of the fracturing well site is not easy to solve. Either the grid capacity at the wellsite is too small to drive the entire fracturing unit; or there is no grid at the wellsite. Therefore, common electric drive fracturing sites usually use generators to generate electricity. The most economical power generation fuel is natural gas, but the use of natural gas requires users to rent or purchase gas-fired generator sets. For a fracturing well site without a power grid, the power of the gas generator set needs to reach at least 30MW. For customers, purchasing such a high-power gas generator set is a lot of investment. More importantly, during the actual construction process, due to the failure of the gas generator set, the entire electric drive fracturing unit will be paralyzed, which will seriously affect the quality of the operation and may even cause an operation accident.

Therefore, a new type of fracturing equipment is urgently needed to solve the above-mentioned shortcomings of the existing diesel engine driven fracturing and electric drive fracturing, which can better meet the needs of the global oil and gas field fracturing market.

Summary of the invention

The purpose of the present invention overcomes the shortcomings of the prior art and provides a turbine fracturing equipment. The linear connection of the entire equipment and the design of a special chassis make its center of gravity dually lowered, and its stability and safety are well guaranteed. It is simpler, investment cost and operating cost are reduced, the risk of paralysis of the fracturing site is reduced, the transmission is good, and it is suitable for long-term continuous operation conditions with large loads.

The purpose of the present invention is achieved through the following technical measures: a turbo fracturing equipment, the turbo fracturing equipment includes a transportation device, a turbine engine, a reduction box, a transmission mechanism and a fracturing pump, and the output end of the turbine engine is connected One end of the reduction box, the other end of the reduction box, and the fracturing pump are connected by a transmission mechanism. The transportation device is used to carry the turbine engine, the reduction box, the transmission mechanism and the fracturing pump. The transportation device includes a chassis, so The chassis is provided with a transportation section, a load-bearing section and a lap section. The transportation section, the load-bearing section and the lap section are connected in sequence. When the turbine fracturing equipment is in working condition, the load-bearing section of the chassis can contact the ground, and when the turbine is compressed When the cracking equipment is in the transportation state, the load-bearing section of the chassis does not touch the ground.

Further, the transportation device includes wheels and axles, the wheels are arranged at both ends of the axles, the axles are connected to the chassis, and the number of axles is more than three.

Further, the axle is arranged in the transportation section of the chassis.

Further, when the turbine fracturing equipment is in working state, the bottom surface of the load-bearing section of the chassis and the bottom of the wheel are on the same horizontal line.

Further, when the turbine fracturing equipment is in the transportation state, the overlap section is used to assist the transportation of the transportation device under the action of external drag.

Further, the bottom of the overlap section is provided with an inclined surface, and a protrusion is provided on the inclined surface. When the turbine fracturing equipment is in the transportation state, the inclined surface can be used in conjunction with external drag equipment, and the protrusion can Help to fix the transportation device and prevent the transportation device from separating from the external drag equipment.

Further, the turbine engine is provided with an exhaust system on the opposite side connected to the reduction gearbox. The exhaust system includes an exhaust muffler and an exhaust pipe. The exhaust muffler is connected to the exhaust pipe of the turbine engine through the exhaust pipe. The air ports are connected.

Further, the exhaust system, the turbine engine, the reduction box, the transmission mechanism and the fracturing pump are arranged on the same straight line along the direction of power transmission.

Further, the transmission mechanism is a transmission shaft or a coupling.

Further, a hydraulic power unit is provided on the gooseneck of the semi-trailer body, and the hydraulic power unit is used to drive the hydraulic system on the turbo fracturing semi-trailer.

Further, the hydraulic power unit is driven by a diesel engine or an electric motor.

Further, a heat dissipation system is provided on the gooseneck of the semi-trailer body, and the heat dissipation system cools the oil used on the turbo fracturing semi-trailer.

Further, the power of the fracturing pump is above 5000hp.

Compared with the prior art, the beneficial effect of the present invention is that the turbine engine, the reduction box, the transmission mechanism and the fracturing pump are connected in a straight line along the power transmission direction to avoid excessive transmission loss and ensure efficient transmission performance. . The turbine engine itself has the advantages of small size, light weight, and high power density. With the same dimensions and weight, the single-machine power of the turbine fracturing equipment is more than twice that of the conventional diesel fracturing equipment. The turbine engine can directly use natural gas as fuel, which greatly reduces the use cost compared to the diesel consumption in diesel driving and the investment of gas generator set in electric drive fracturing equipment. At the same time, turbo fracturing equipment is usually driven one-to-one with fracturing pumps. Unlike electric fracturing equipment, a single high-power gas generator set drives multiple fracturing pumps. The risk of failure of the power gas generator is equally distributed to each turbine fracturing equipment. The risk of the failure of a single gas-fired power generation equipment causing a complete set of fracturing vehicles to be paralyzed is avoided. Through the special chassis design of the transportation device, the entire equipment is further reduced on the basis of the linear connection and the center of gravity is lowered, so that the stability and safety of the entire equipment are improved regardless of whether it is transported or working.

The present invention will be described in detail below with reference to the drawings and specific embodiments.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the turbine fracturing equipment under working conditions.

Figure 2 is a schematic diagram of the structure of the turbo fracturing equipment in transportation.

Among them, 1. Hydraulic power unit, 2. Transportation device, 3. Exhaust muffler, 4. Exhaust pipe, 5. Turbine engine, 6. Gearbox, 7. Transmission mechanism, 8. Fracturing pump, 9. Traction Car, 10. Incline, 11. Convex, 12. Horizontal, 13. Slope.

detailed description

As shown in Figures 1 to 2, a turbo fracturing equipment includes a transport device 2, a turbo engine 5, a reduction box 6, a transmission mechanism 7 and a fracturing pump 8. The turbo engine 5 is a complete The power source of the vehicle power transmission system, the output end of the turbine engine 5 is connected to one end of the reduction box 6, the other end of the reduction box 6 is connected to the fracturing pump 8 through a transmission mechanism 7, and the transportation device 2 is used for Carrying the turbine engine 5, the reduction box 6, the transmission mechanism 7 and the fracturing pump 8, the transportation device 2 includes a chassis, and the chassis is provided with a transportation section, a load-bearing section and a lap section, the transportation section, a load-bearing section and a lap section. The connecting sections are connected in sequence. When the turbine fracturing equipment is working, the load-bearing section of the chassis can contact the ground, and when the turbine fracturing equipment is transported, the load-bearing section of the chassis does not touch the ground. Battery cables, fuel tanks, lubricating oil tanks, hydraulic oil tanks and other components can also be arranged on the chassis to provide oil and support for the turbo engine 5, reduction gear box 6, fracturing pump 8 and other top-mounted components. The reduction box 6 is used to reduce the speed and increase the power output of the turbine engine 5 and then drive the fracturing pump 8 through the transmission mechanism 7 to work.

The transportation device 2 includes wheels and axles, the wheels are arranged at both ends of the axles, the axles are connected to the chassis, and the number of the axles is more than 3 to ensure sufficient bearing capacity.

The axle is arranged in the transportation section of the chassis.

When the turbine fracturing equipment is working, the bottom surface of the load-bearing section of the chassis and the bottom of the wheel are on the same horizontal line. The bottom surface of the load-bearing section itself is a horizontal surface 12 plus a slope surface 13. In the working state, the horizontal surface 12 of the bottom surface of the load-bearing section fully contacts the ground, which increases the stability of the equipment. When the slope surface 13 is used in the transportation state of the turbine fracturing equipment, the lifted chassis is separated from the ground to facilitate walking.

When the turbo fracturing equipment is being transported, the overlap section is used to assist the transport of the transport device 2 under the action of external drag.

The bottom of the overlap section is provided with an inclined surface 10, and a protrusion 11 is provided on the inclined surface 10. When the turbine fracturing equipment is transported, the inclined surface 10 can be used in conjunction with external drag equipment. 11 can help to fix the transport device 2 and prevent the transport device 2 from being separated from external drag equipment. The external drag equipment can be a tractor 9 and the like. The protrusion 11 may be a traction pin.

The turbine engine 5 is provided with an exhaust system on the opposite side connected to the reduction box 6. The exhaust system includes an exhaust muffler 3 and an exhaust duct 4. The exhaust muffler 3 is connected to the turbine through the exhaust duct 4 The exhaust port of the engine 5 communicates. The exhaust duct 4 is used to guide the exhaust gas of the turbine engine 5 into the exhaust muffler 3, and the exhaust muffler 3 can reduce exhaust noise.

The exhaust system, the turbine engine 5, the reduction box 6, the transmission mechanism 7 and the fracturing pump 8 are arranged on the same straight line along the direction of power transmission. The turbine engine 5, the reduction box 6, the transmission mechanism 7 and the fracturing pump 8 are connected in a straight line along the power transmission direction, which can avoid excessive transmission loss and ensure efficient transmission performance. The turbine engine 5 itself has the advantages of small size, light weight, and high power density. With the same external dimensions and weight, the single engine power of the turbine fracturing equipment is more than twice that of the conventional diesel fracturing equipment. The turbine engine 5 can directly use 100% natural gas as fuel, which greatly reduces the use cost compared with the diesel consumption in diesel driving and the investment of gas generator set in electric drive fracturing equipment. Of course, the turbine engine 5 can also be 100% fueled by oil, preferably natural gas, which can reduce fuel costs more than fuel. At the same time, the turbo fracturing equipment is usually driven one-to-one with the fracturing pump 8, unlike the electric drive fracturing equipment, which is driven by a single high-power gas generator set to drive multiple fracturing pumps 8. The failure risk of a single high-power gas generator is equally distributed to each turbine fracturing equipment. The risk of the failure of a single gas-fired power generation equipment causing a complete set of fracturing vehicles to be paralyzed is avoided.

The transmission mechanism 7 is a transmission shaft or a coupling.

A hydraulic power unit 1 is provided on the gooseneck of the semi-trailer body, and the hydraulic power unit 1 is used to drive the hydraulic system on the turbo fracturing semi-trailer. The hydraulic system includes hydraulic pumps, hydraulic motors, various valves, hydraulic oil tanks, hydraulic oil radiators, etc. (The main function of the hydraulic system: the fuel pump used to drive the turbine engine 5, the starter motor of the turbine engine 5, and the fracturing pump 8 power end lubrication system, gearbox 6 lubrication system, various oil radiators, etc.).

The hydraulic power unit 1 is driven by a diesel engine or an electric motor.

A heat dissipation system is provided on the gooseneck of the semi-trailer body, and the heat dissipation system cools the oil used on the turbo fracturing semi-trailer. The oils used include turbine engine 5 oil, hydraulic oil, fracturing pump 8 lubricating oil, gear box 6 lubricating oil and so on.

The power of the fracturing pump 8 is above 5000 hp, and the greater the power of the fracturing pump 8 is, the more suitable it is for a long-term and large-load continuous operation.

Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have Various changes and improvements fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

A turbo fracturing equipment, characterized in that: the turbo fracturing equipment includes a transportation device, a turbo engine, a reduction gear box, a transmission mechanism and a fracturing pump, and the output end of the turbine engine is connected to one end of the reduction gear box. The other end is connected with the plunger pump through a transmission mechanism. The transportation device is used to carry the turbine engine, the reduction box, the transmission mechanism and the plunger pump. The transportation device includes a chassis, and the chassis is provided with a transportation section for carrying Section and lap section, the transport section, load-bearing section and lap section are connected in sequence. When the turbine fracturing equipment is in working state, the load-bearing section of the chassis can contact the ground. When the turbine fracturing equipment is in transportation state, the load-bearing section of the chassis can contact the ground. The load-bearing section of the chassis does not touch the ground.
The turbine fracturing equipment according to claim 1, wherein the transportation device includes wheels and axles, the wheels are arranged at both ends of the axles, the axles are connected to the chassis, and the number of axles is more than 3 .
The turbo fracturing equipment according to claim 2, wherein the axle is provided in the transport section of the chassis.
The turbine fracturing equipment according to claim 2, characterized in that: when the turbine fracturing equipment is working, the bottom surface of the load-bearing section of the chassis and the bottom of the wheel are on the same horizontal line.
The turbo fracturing equipment according to claim 1, wherein when the turbo fracturing equipment is being transported, the overlap section is used to assist the transport of the transport device under the action of external drag.
The turbo fracturing equipment according to claim 5, characterized in that: the bottom of the overlap section is provided with a slope, and there are protrusions on the slope, and when the turbo fracturing equipment is transported, the slope can be The external drag equipment is used in conjunction, and the protrusions can help fix the transportation device and prevent the transportation device from being separated from the external drag equipment.
The turbo fracturing semi-trailer according to claim 1, characterized in that: the turbine engine is provided with an exhaust system on the opposite side connected to the reduction box, and the exhaust system includes an exhaust muffler and an exhaust pipe, so The exhaust muffler communicates with the exhaust port of the turbine engine through an exhaust pipe.
The turbo fracturing semi-trailer according to claim 7, wherein the exhaust system, the turbo engine, the reduction box, the transmission mechanism and the plunger pump are arranged in the same straight line along the direction of power transmission.
The turbine fracturing equipment according to claim 1, wherein the transmission mechanism is a transmission shaft or a coupling.
The turbo fracturing semi-trailer according to claim 1, wherein a hydraulic power unit is provided on the gooseneck of the semi-trailer body, and the hydraulic power unit is used to drive the hydraulic system on the turbo fracturing semi-trailer.
The turbo fracturing semi-trailer according to claim 10, wherein the hydraulic power unit is driven by a diesel engine or an electric motor.
The turbo fracturing semi-trailer according to claim 1, wherein a heat dissipation system is provided on the gooseneck of the semi-trailer body, and the heat dissipation system cools the oil used on the turbo fracturing semi-trailer.
The turbo fracturing semi-trailer according to claim 1, wherein the power of the plunger pump is above 5000hp.