CN110500077A - A kind of branch liquid supply equipment - Google Patents

Abstract

The invention relates to a branch liquid supply device. It mainly solves the problem that the existing remote water supply and liquid supply equipment has a single function and cannot supply liquid for more than two kinds of equipment at the same time. It is characterized in that: the outlet of the water storage tank (1) is respectively connected to the main liquid supply system (4) and the auxiliary liquid supply system (3); the outlet of the water storage tank (1) is respectively connected to the main liquid supply system The suction port of the pump is connected with the suction port line end of the auxiliary liquid supply system; the discharge port line end of the main liquid supply system (4) is connected with the buffer tank (7) through the discharge pipe, and the discharge port of the buffer tank (7) The outlet links to each other with the sand mixing vehicle (8). The branch liquid supply equipment can realize water supply and liquid supply with different displacements, supply liquid for more than two kinds of equipment at the same time, reduce working time and improve working efficiency.

Description

A branch liquid supply device

technical field

The invention relates to the field of oil exploitation fracturing equipment, in particular to a novel branch liquid supply equipment.

Background technique

In the process of oil and gas field exploitation, the use of fracturing technology is one of the important technical means to increase reserves and production in oil and gas fields. High-pressure fluid is used to form fractures in the formation, thereby enhancing the permeability of oil and gas layers and achieving the purpose of increasing oil and gas production. During fracturing operations, the performance of supporting equipment directly determines the efficiency and quality of oil and gas well fracturing operations. Among the supporting equipment for fracturing, the remote water supply and liquid supply equipment is the key device for supplying upstream water sources to other supporting equipment for water and liquid use. A large amount of water supply and liquid distribution is required in all aspects of construction, especially in the fracturing and well completion process, the water consumption is basically All reached tens of thousands of square meters.

At present, the remote water supply and liquid supply equipment commonly used in China has only one set of liquid supply system, and the displacement of the pump is changed by adjusting the speed of the motor in the liquid supply system. During the water supply and liquid supply operation, an additional manifold system needs to be connected to realize the water supply and liquid supply to different equipment. There are often the following problems in the process of use:

1. When switching from a supply equipment with a large water supply demand to other equipment with a small water supply demand, the connected motor will run at a low speed for a long time due to the large change in the displacement of the pump.

2. Because only one set of liquid supply system is installed, the remote water supply and liquid supply equipment cannot supply liquid to more than two kinds of equipment at the same time. Only after the liquid supply for one equipment is completed, can it supply liquid to the other equipment.

3. When the remote water supply and liquid supply equipment is working, an additional manifold system needs to be connected between each liquid supply equipment, and different valve groups on the manifold system can be manually switched to realize liquid supply to different equipment. The cost of labor is increased, the operation period is long, and the operation efficiency is low.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the problem that the existing remote water supply and liquid supply equipment in the background technology has a single function and cannot supply liquid for more than two kinds of equipment at the same time, and to provide a split liquid supply device, the split liquid supply The equipment can realize water supply and liquid supply with different displacements, and supply liquid for more than two kinds of equipment at the same time, reducing operation time and improving operation efficiency.

The problem solved by the present invention can be achieved through the following technical solutions: the branch liquid supply equipment includes a water storage tank, and the outlet of the water storage tank is respectively connected to the main liquid supply system and the auxiliary liquid supply system; the water storage tank The discharge port of the main liquid supply system is connected with the pump suction port of the main liquid supply system and the suction port pipeline end of the auxiliary liquid supply system; The outlet is connected with the sand mixing truck.

The main liquid supply system includes a double-suction split centrifugal pump. One end of the double-suction split centrifugal pump is the pump suction port, and the other end is the pump outlet pipe. Transmitter, flow transmitter, electric butterfly valve A, electric butterfly valve A is connected to 90° elbow B.

The auxiliary liquid supply system includes a vertical centrifugal pump, an electric butterfly valve C is connected to the suction pipeline at one end of the vertical centrifugal pump; a check valve, a pressure transmitter, a flow rate Transmitter, short circuit, electric butterfly valve B.

The ends of the two outlet pipelines of the auxiliary liquid supply system are connected in parallel with two outlet pipes, and the two outlet pipes are respectively connected to the acid mixing skid and the fracturing liquid distribution truck.

The pump outlet pipe of the main liquid supply system and the discharge outlet pipeline of the auxiliary liquid supply system are also respectively connected with shock absorber throats.

The branch liquid supply equipment is composed of two sets of liquid supply systems: a main liquid supply system with a large rated displacement and an auxiliary liquid supply system with a relatively small rated displacement. When supplying water and liquid, the main liquid supply system and the auxiliary liquid supply system can be connected in shunts to supply equipment with different displacement requirements, and supply water and liquid at the same time. Among them, the main liquid supply system is mainly for the sand mixer truck. The auxiliary liquid supply system mainly provides clean water with different displacements for acid distribution equipment and liquid distribution equipment.

The branch liquid supply equipment can realize simultaneous water supply and liquid supply operation in separate paths. This split liquid supply technology can ensure that while the main liquid supply system is supplying liquid to the sand mixer, the auxiliary liquid supply system can also supply clean water to the acid dispensing equipment or liquid dispensing equipment. The two outlets of the auxiliary liquid supply system are equipped with electric butterfly valves, which can be switched by the automatic control system without manual operation of the valves. It not only reduces the labor cost, but also improves the working efficiency of remote water supply and liquid supply equipment, and ensures the continuity of water supply and liquid supply.

Compared with the above-mentioned background technology, the present invention can have the following beneficial effects:

1. While supplying liquid to the sand mixing truck, it can also supply clean water to the acid mixing skid or fracturing liquid distribution truck, which improves the working efficiency of the water supply and liquid supply equipment.

2 The main liquid supply system and auxiliary liquid supply system are adopted, which can realize water supply and liquid supply with different displacements, avoiding the long-term low-speed operation of the motor when the single machine and single pump work, reducing the workload of the unit and prolonging the life of the motor.

3 The two-way liquid supply system is directly connected to the corresponding supply equipment, and the water supply and liquid supply can be completed without connecting an independent manifold system between the equipment, which reduces the complexity of installation and operation.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is the structural representation of main liquid supply system of the present invention;

Accompanying drawing 3 is the structure diagram of auxiliary liquid supply system of the present invention.

In the figure: 1-reservoir; 3-auxiliary liquid supply system; 4-main liquid supply system; 5-acid mixing skid; 6-fracturing liquid distribution vehicle; 7-buffer tank; Suction port; 10-double suction split centrifugal pump; 11-motor; 12-90° elbow A; 13-check valve; 14-pressure transmitter; 15-flow transmitter; 16-shock absorber throat; 17-electric butterfly valve A; 18-90° elbow B; 19-discharge outlet pipeline; 20-electric butterfly valve B; 21-short connection; 22-shock absorber throat A; 23-flow transmitter A; Conveyor A; 25-check valve A; 26-vertical centrifugal pump; 27-electric butterfly valve C; 28-suction pipeline.

Detailed ways:

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the branch liquid supply equipment includes a reservoir 1, and the outlet of the reservoir 1 is respectively connected to the main liquid supply system 4 and the auxiliary liquid supply system 3;

As shown in Figure 2, the main liquid supply system 4 includes a double-suction split centrifugal pump 10, one end of the double-suction split centrifugal pump 10 is the pump inlet 9, the other end is the pump outlet pipe, and the pump outlet pipe passes through 90° Elbow A12 is sequentially connected to check valve 13, pressure transmitter 14, flow transmitter 15, shock absorber throat 16, electric butterfly valve A17, and electric butterfly valve A17 is connected to 90° elbow B18;

As shown in Figure 3, the auxiliary liquid supply system 3 includes a vertical centrifugal pump 26, an electric butterfly valve C27 is connected to the suction inlet pipeline 28 at one end of the vertical centrifugal pump 26; The check valve A25, pressure transmitter A24, flow transmitter A23, shock absorber throat A22, short circuit 21, and electric butterfly valve B20 are connected in sequence;

The outlet of the reservoir 1 is respectively connected to the pump inlet 9 of the main liquid supply system and the end of the suction inlet pipeline 28 of the auxiliary liquid supply system; It is connected with the buffer tank 7, and the outlet of the buffer tank 7 is connected with the sand mixer 8; the two outlet pipelines 19 of the auxiliary liquid supply system 3 are connected in parallel with two outlet pipes, and the two outlet pipes are respectively connected with the acid mixing skid 5 And fracturing fluid distribution truck6.

When the main liquid supply system 4 starts to work, the motor 11 drives the double-suction split centrifugal pump 10 to start running, sucks clean water from the reservoir 1, and injects it into the discharge pipeline through the pump suction port 9, wherein the check valve 13 prevents The problem of backflow of liquid in the pipeline; the pressure transmitter 14 can monitor the pressure in the pipeline at all times to prevent accidents caused by excessive pressure in the pipeline; the flow transmitter 15 can monitor the flow in the pipeline at all times, and cooperate with the electromagnetic butterfly valve 17 The switch can adjust the flow according to a fixed value; the shock-absorbing throat 16 is a coiled pipe fitting, which can slow down the impact of the water flow on the pipeline, so that the measured values of each transmitter are stable.

When the auxiliary liquid supply system 3 starts to work, the motor drives the vertical centrifugal pump 26 to start running, sucks clean water from the reservoir 1, and injects it into the discharge pipeline through the suction inlet pipeline 28, wherein the check valve 13 prevents the pipeline from leaking. The problem of backflow of the internal liquid; the pressure transmitter A24 can monitor the pressure in the pipeline at all times to prevent accidents caused by excessive pressure in the pipeline; the flow transmitter A23 can monitor the flow in the pipeline at all times, and cooperate with the switch of the electromagnetic butterfly valve C27, The flow rate can be adjusted according to a fixed value; the shock-absorbing throat A22 is a coiled pipe fitting, which can slow down the impact of water flow on the pipeline and stabilize the measured value of each transmitter.

The shunt liquid supply equipment uses remote water supply and liquid supply equipment with shunt liquid supply technology. According to the operation process of the fracturing supporting equipment in the actual well site, the outlet of the reservoir 1 is connected to the main liquid supply system respectively. 4 is connected to the suction port of the auxiliary liquid supply system 3, and supplies water to the sand mixing truck 8, the acid mixing skid 5 and the fracturing liquid distribution truck 6.

When supplying liquid to the sand mixing vehicle 8 , the discharge port of the main liquid supply system 4 is connected to the buffer tank 7 , and then the discharge port of the buffer tank 7 is connected to the sand mixing vehicle 8 . After the pipeline is connected, start the main liquid supply system 4, so that the main liquid supply system sucks clean water from the reservoir 1, and delivers the prepared liquid to the buffer tank 7 through the discharge pipe to supply the sand mixer 8 in real time use.

While the active liquid supply system 4 is working, the water supply operation can also be performed for the acid mixing skid 5 or the fracturing liquid distribution truck 6 . Connect the discharge nozzles of the auxiliary liquid supply system 3 to the acid mixing skid 5 and the fracturing liquid distribution truck 6 respectively. Open and close the valve to discharge the clear water into the acid mixing skid 5 or the fracturing liquid distribution truck 6 .

The branch liquid supply equipment reduces the workload of the main centrifugal pump unit and avoids the long-term low-speed operation of the motor; there is no need for an external manifold system, and the internal liquid supply system of the equipment can supply water and liquid for multiple equipment. The connection line of the manifold is clear, and the installation and operation are simple; the use of two sets of liquid supply systems can realize the simultaneous operation of the branches, automatic control switching, avoid manual operation, and improve operating efficiency.

Claims (5)

1. a kind of branch liquid supply equipment, including reservoir (1), it is characterised in that: the outlet of the reservoir (1) is separately connected Main liquid-supplying system (4) and secondary liquid-supplying system (3)；The outlet of the reservoir (1) Pump Suction Nozzle with main liquid-supplying system respectively And the suction inlet manifold headers connection of secondary liquid-supplying system；The outlet manifold headers of the main liquid-supplying system (4) pass through discharge pipe It is connected with surge tank (7), the outlet of surge tank (7) is connected with fracturing blender truck (8).

2. branch liquid supply equipment according to claim 1, it is characterised in that: the main liquid-supplying system (4) includes in double suction It opens centrifugal pump (10), it is Pump Suction Nozzle (9) that centrifugal pump (10) one end is opened in double suction, and the other end is pump discharge pipe, and pump discharge pipe is logical Cross 90 ° of elbow A(12) it is sequentially connected check-valves (13), pressure transmitter (14), flow transmitter (15), electric butterfly valve A(17), Electric butterfly valve A(17) 90 ° of elbow B(18 of connection).

3. branch liquid supply equipment according to claim 1, it is characterised in that: it is described pair liquid-supplying system (3) include it is vertical from Heart pump (26) is connected to electric butterfly valve C(27 on vertical centrifugal pump (26) one end suction inlet pipeline (28))；Vertical centrifugal pump (26) is another Be connected with check-valves A(25 in turn on one end outlet pipeline (19)), pressure transmitter A(24), flow transmitter A(23), it is short Connect (21), electric butterfly valve B(20).

4. branch liquid supply equipment according to claim 3, it is characterised in that: two discharges of the pair liquid-supplying system (3) Mouth pipeline (19) end two outlets in parallel, two outlets are separately connected nitration mixture sled (5) and pressure break liquid distributing vehicle (6).

5. branch liquid supply equipment according to claim 2 or 3, it is characterised in that: main liquid-supplying system (4) pump discharge pipe And compensator is also respectively connected on secondary liquid-supplying system (3) outlet pipeline (19).