CN211649838U

CN211649838U - Skid-mounted device and crude oil gathering and transportation equipment with same

Info

Publication number: CN211649838U
Application number: CN201922220480.3U
Authority: CN
Inventors: 张文军
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-09
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a sled dress device and have its crude oil gathering and transportation equipment, wherein, sled dress device, include: a base; the first tank body and the second tank body are connected to the base, the first tank body is communicated with a wellhead valve through a first connecting pipe, and the first tank body is communicated with the second tank body through an overflow channel; the first centrifugal pump and the second centrifugal pump are connected with the second connecting pipe, the first centrifugal pump and the second centrifugal pump are connected to the base, the first centrifugal pump is communicated with the first tank body, the second centrifugal pump is communicated with the second tank body, and the first centrifugal pump and the second centrifugal pump are communicated with the oil collecting pipeline through the second connecting pipe. The technical scheme of the application effectively solves the problems that secondary hauling cost generated when the produced liquid is collected by the oil tank truck in the related technology is high and cost saving is not facilitated.

Description

Skid-mounted device and crude oil gathering and transportation equipment with same

Technical Field

The utility model relates to an oil field crude oil exploitation field particularly, relates to a sled dress device and have its crude oil gathering and transportation equipment.

Background

At present, an oil field crude oil exploitation gathering and transferring system has two gathering and transferring process flows. One is an open flow of 'second half', namely a well head → a metering station or a multi-way valve oil collecting metering manifold → an oil collecting tank → a rotary oil pump → a processing station; the other method adopts a secondary station distribution closed flow, namely a well head → a metering station or a multi-way valve oil collecting metering manifold → a processing station. During the operation process, the flow of the produced liquid depends on the lifting kinetic energy of the produced liquid of the shaft of the oil well from the single well mouth to the metering station or the multi-way valve oil collecting metering manifold section, so that the residual energy is provided for the lifting of the produced liquid entering the subsequent flow, and the produced liquid is promoted to flow to the mouth. Wherein, the produced liquid in the open flow enters the oil collecting tank to be collected, and then is supplied with kinetic energy by the transfer oil pump to be conveyed to the treatment station in a centralized way. The oil transfer pump is omitted in the closed flow, the whole process operation can meet the production requirement, and the flowing kinetic energy of the produced liquid is provided by the residual kinetic energy of the lifting of each single well shaft before the produced liquid enters the treatment station.

During the production operation process of the closed gathering and transportation process, the single well is far away from a metering station or a multi-way valve oil collecting metering manifold, the physical properties such as the temperature and the viscosity of the collected liquid are influenced, a large amount of energy is consumed for overcoming on-way resistance and the like in the flowing process of the collected liquid, the lifting kinetic energy of the shaft collected liquid is lifted to the residual energy generated after the shaft is lifted to the well mouth, and after the residual energy is consumed for overcoming on-way resistance, the self flowing capacity of the collected liquid is weakened, so that the back pressure of the single well mouth is increased, the system operation pressure is increased, the back pressure of a single well shaft lifting system is increased, the single well yield is influenced. Especially, in the running process in winter, the back pressure of a single well continuously rises, the viscosity of crude oil is high, the oil temperature is low, the energy is insufficient after closed gathering and transportation, the flow of produced liquid is not smooth and continuously worsens, the freezing and blocking of the well mouth are easily caused, and the risk of damage to gathering and transportation system equipment and facilities is caused while the yield is influenced.

At present, in the related technology, a simple square tank is visited at a well head for open production, single-well produced liquid is collected and recovered to the square tank, and when the produced liquid is collected by the square tank and reaches the recovery pulling amount, a pump truck and an oil tank truck are adopted for recovery pulling. Crude oil in the square tank overflows in the production process of placing the square tank at the well mouth, and toxic and harmful gas cannot be controlled to be discharged, so that the risks of environmental pollution, poisoning of personnel and the like exist. In addition, the secondary pulling cost generated when the produced liquid is collected by the oil tank truck is high, and the cost is not saved.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a sled dress device and have its crude oil gathering and transportation equipment to the utilization among the solution correlation technique is drawn the oil tank car and is collected the secondary that produces when producing and draw the freight higher, is unfavorable for practicing thrift the problem of cost.

In order to achieve the above object, according to the utility model discloses an aspect provides a skid-mounted device, detachably connects between well head valve and collection oil pipe way, and the skid-mounted device includes: a base; the first tank body and the second tank body are connected to the base, the first tank body is communicated with a wellhead valve through a first connecting pipe, and the first tank body is communicated with the second tank body through an overflow channel; the first centrifugal pump and the second centrifugal pump are connected with the second connecting pipe, the first centrifugal pump and the second centrifugal pump are connected to the base, the first centrifugal pump is communicated with the first tank body, the second centrifugal pump is communicated with the second tank body, and the first centrifugal pump and the second centrifugal pump are communicated with the oil collecting pipeline through the second connecting pipe.

Further, the import of the first jar of body and the exit linkage of first connecting pipe, sled dress device still includes the desander of connection between the import of the first jar of body and the export of first connecting pipe.

Further, the air outlet department of desander is provided with the exhaust pipe, and the sled dress device still is including setting up the gas treater on the exhaust pipe.

Furthermore, a sand cleaning hole is arranged on the first tank body.

Further, skid-mounted device still includes the controller and first level gauge and the second level gauge be connected with the controller, and first level gauge is connected at first jar of body and second level gauge and is connected on the second jar of body, and first centrifugal pump and second centrifugal pump all are connected with the controller.

Furthermore, a first control valve is arranged between the first tank body and the first centrifugal pump, and a second control valve is arranged between the second tank body and the second centrifugal pump.

Further, the skid-mounted device further comprises a shell and a partition plate, the partition plate is arranged in the shell and divides the shell into a first tank body and a second tank body, and an overflow port is formed in the partition plate.

Furthermore, a first check valve is arranged between the outlet of the first centrifugal pump and the first inlet of the second connecting pipe, and a second check valve is arranged between the outlet of the second centrifugal pump and the second inlet of the second connecting pipe.

According to the utility model discloses an on the other hand provides a crude oil gathering and transportation equipment, including the sled device, the sled device is foretell sled device.

Furthermore, the crude oil gathering and transferring equipment further comprises a wellhead valve, an oil collecting pipeline and a crude oil processing device, wherein the wellhead valve comprises a main gate valve and an auxiliary gate valve, the auxiliary gate valve is communicated with an inlet of a first connecting pipe of the skid-mounted device, the main gate valve is communicated with a first inlet of the oil collecting pipeline, an outlet of a second connecting pipe of the skid-mounted device is communicated with a second inlet of the oil collecting pipeline, and an outlet of the oil collecting pipeline is communicated with the crude oil processing device.

Use the technical scheme of the utility model, sled dress device detachably connects between well head valve and oil collecting pipe way. Sled dress device includes: the centrifugal pump comprises a base, a first connecting pipe, a first tank body, a second connecting pipe, a first centrifugal pump and a second centrifugal pump. The first tank body and the second tank body are connected to the base, the first tank body is communicated with the wellhead valve through a first connecting pipe, and the first tank body is communicated with the second tank body through an overflow channel. The first centrifugal pump and the second centrifugal pump are both connected with the second connecting pipe. First centrifugal pump and second centrifugal pump are connected on the base, and first centrifugal pump is linked together with the first jar of body, and the second centrifugal pump is linked together with the second jar of body, and first centrifugal pump and second centrifugal pump communicate with the oil collecting pipeline through the second connecting pipe mutually. Like this, under the normal condition, the well head valve is opened, starts first centrifugal pump, just can deposit the oil recovery liquid in the first connecting tube to first jar internal. Because the first tank body is communicated with the second connecting pipe, the oil extraction liquid in the first tank body can be pumped out from the second connecting pipe, so that the oil extraction liquid is conveyed into the crude oil treatment device from the oil collecting pipeline. When the produced liquid in the first tank body overflows, the overflowed produced liquid can flow into the second tank body, and the produced liquid in the second tank body can be pumped out from the second connecting pipe through the second centrifugal pump communicated with the second tank body, so that the produced liquid is conveyed to the crude oil treatment device from the oil collecting pipeline, and the normal operation of the skid device is ensured. The arrangement of the first centrifugal pump and the second centrifugal pump enables produced liquid to smoothly enter the crude oil processing device to provide required kinetic energy, the backflow pressure in the first connecting pipe is reduced, meanwhile, when the device is required to be skid-mounted, the device can be directly dismounted between a wellhead valve and a flow collecting pipeline, the produced liquid is collected without a square tank of a pull oil tank truck in the related technology, and the cost is saved. Therefore, the technical scheme of the application effectively solves the problems that the secondary pulling cost generated when the produced liquid is collected by the oil tank truck in the related technology is high and the cost is not saved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a front view schematic of an embodiment of a skid according to the present disclosure; and

fig. 2 shows a schematic top view of the skid of fig. 1.

Wherein the figures include the following reference numerals:

1. a wellhead valve; v1, main gate valve; v2, sub gate valve; 2. an oil collecting pipeline; 10. a base; 21. a first tank; 211. cleaning sand holes; 212. an overflow port; 22. a second tank; 30. a first connecting pipe; 41. a first centrifugal pump; 42. a second centrifugal pump; 50. a second connecting pipe; 60. a desander; 61. an exhaust line; 71. a gas processor; 721. a first control valve; 722. a second control valve; 73. a first liquid level meter; 741. a first check valve; 742. a second one-way valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 2, the skid of the present embodiment is detachably connected between a wellhead valve 1 and a collecting line 2. Sled dress device includes: the first centrifugal pump is characterized by comprising a base 10, a first connecting pipe 30, a first tank 21, a second tank 22, a second connecting pipe 50, a first centrifugal pump 41 and a second centrifugal pump 42. The first tank 21 and the second tank 22 are connected to the base 10, the first tank 21 is communicated with the wellhead valve 1 through a first connecting pipe 30, and the first tank 21 is communicated with the second tank 22 through an overflow channel. The first centrifugal pump 41 and the second centrifugal pump 42 are both connected to the second connection pipe 50. The first centrifugal pump 41 and the second centrifugal pump 42 are connected to the base 10, the first centrifugal pump 41 is communicated with the first tank 21, the second centrifugal pump 42 is communicated with the second tank 22, and the first centrifugal pump 41 and the second centrifugal pump 42 are communicated with the oil collecting pipeline 2 through a second connecting pipe 50.

By applying the technical scheme of the embodiment, the first tank 21 and the second tank 22 are connected to the base 10, the first tank 21 is communicated with the wellhead valve 1 through the first connecting pipe 30, and the first tank 21 is communicated with the second tank 22 through the overflow channel. The first centrifugal pump 41 and the second centrifugal pump 42 are both connected to the second connection pipe 50. The first centrifugal pump 41 and the second centrifugal pump 42 are connected to the base 10, the first centrifugal pump 41 is communicated with the first tank 21, the second centrifugal pump 42 is communicated with the second tank 22, and the first centrifugal pump 41 and the second centrifugal pump 42 are communicated with the oil collecting pipeline 2 through a second connecting pipe 50. Thus, under normal conditions, the wellhead valve is opened, and the first centrifugal pump 41 is started, so that the oil production liquid in the first connecting pipe 30 can be transferred and stored into the first tank 21. Since the first tank 21 is communicated with the second connection pipe 50, the produced oil in the first tank 21 can be drawn out from the second connection pipe 50 so that the produced oil is transferred from the oil collecting pipe 2 to the crude oil processing unit. When the produced liquid in the first tank 21 overflows, the overflowed produced liquid can flow into the second tank 22, and the produced liquid in the second tank 22 can be pumped out from the second connecting pipe 50 through the second centrifugal pump 42 communicated with the second tank 22, so that the produced liquid is conveyed to the crude oil treatment device from the oil collecting pipeline, and the normal operation of the skid device is ensured. The arrangement of the first centrifugal pump 41 and the second centrifugal pump 42 enables produced liquid to smoothly enter the crude oil processing device to provide required kinetic energy, the backflow pressure in the first connecting pipe 30 is reduced, meanwhile, when the device is required to be skid-mounted, the device can be directly dismounted between a wellhead valve and a flow collecting pipeline, a square tank of an oil tank truck in the related technology is not required to collect the produced liquid, and the cost is saved. Therefore, the technical scheme of the embodiment effectively solves the problems that in the related art, the secondary pulling cost generated when the produced liquid is collected by the oil tank truck is high, and the cost is not saved.

It should be noted that the number of the centrifugal pump and the tank body is not limited to two, and may be one, three or more. The skid-mounted device can realize the dismounting process in a hoisting mode. The two tanks can be mounted on the base 10 by welding or screwing. The two centrifugal pumps may be mounted on the base 10 by welding or screwing. In addition, the volumes of the two tanks can be estimated according to the safe and effective volume conditions required by the actual field use, and then the two tanks are processed and manufactured. The wellhead valve 1 is a wellhead valve of a single well.

As shown in fig. 1 and 2, in the present embodiment, the inlet of the first tank 21 is connected to the outlet of the first connecting pipe 30, and the skid device further includes a sand remover 60 connected between the inlet of the first tank 21 and the outlet of the first connecting pipe 30. The produced liquid in the first connecting pipe 30 passes through the desander 60, so as to achieve the effects of sand production, turbidity reduction and solid-liquid separation. The first connection pipe 30 is preferably a metal hose. The second connection pipe 50 is preferably a metal hose. The desander 60 is preferably a cyclone desander.

As shown in fig. 1, in the present embodiment, an exhaust pipe 61 is provided at an exhaust port of the sand remover 60, and the skid further includes a gas processor 71 provided on the exhaust pipe 61. The gas generated after the produced liquid passes through the desander 60 enters a gas processor 71, and the gas processor 71 carries out toxic and harmful treatment on the gas generated after the desander 60. Furthermore, the gas is diffused and discharged through the exhaust pipeline 61, the gas after being filtered and adsorbed is controllably discharged, and the clean production is realized while the production requirement of the skid-mounted device can be met.

As shown in fig. 2, in the present embodiment, the first tank 21 is provided with a sand cleaning hole 211. The sand cleaning holes 211 are provided to clean the sand in the first tank 21 periodically.

As shown in fig. 1 and 2, in the present embodiment, the skid further includes a controller (not shown in the figure) and a first liquid level meter 73 and a second liquid level meter connected to the controller, the first liquid level meter 73 is connected to the first tank 21 and the second liquid level meter is connected to the second tank 22, and both the first centrifugal pump 41 and the second centrifugal pump 42 are connected to the controller. The controller is preferably a variable frequency controller. According to the data of the first liquid level meter 73, the controller can control the opening and closing and the displacement of the first centrifugal pump 41 communicated with the first tank and the opening and the displacement of the second centrifugal pump 42 communicated with the second tank so as to ensure that the skid-mounted device dump oil production fluid can normally operate. Of course, the installation height of the first liquid level meter 73 on the first tank 21 can be set to a corresponding height according to different working conditions and different seasons of the first centrifugal pump 41. Of course, the installation height of the second liquid level meter on the second tank 22 can be set to a corresponding height according to different working conditions and different seasons of the second centrifugal pump 42.

As shown in fig. 1 and 2, in the present embodiment, a first control valve 721 is provided between the first tank 21 and the first centrifugal pump 41, and a second control valve 722 is provided between the second tank 22 and the second centrifugal pump 42. In the case of overhauling the tank and the centrifugal pump, the opening and closing of the outlet of the first tank 21 can be controlled by the first control valve 721, so that the produced liquid in the first tank 21 is prevented from flowing out. Meanwhile, the opening and closing of the inlet of the first centrifugal pump 41 are controlled by the first control valve 721, so that the produced liquid in the first centrifugal pump 41 can be prevented from flowing out. In addition, the opening and closing of the outlet of the second tank 22 can be controlled by the second control valve 722, so that the produced liquid in the second tank 22 is prevented from flowing out. Meanwhile, the opening and closing of the inlet of the second centrifugal pump 42 are controlled by the second control valve 722, so that the produced liquid in the second centrifugal pump 42 can be prevented from flowing out. As shown in fig. 2, in the present embodiment, the skid-mounted device further includes a casing and a partition (not shown), the partition is disposed in the casing and divides the casing into the first tank 21 and the second tank 22, and the partition is provided with an overflow port 212. The arrangement of the partition plate enables the first tank body 21 and the second tank body 22 to be connected conveniently, and materials are saved. When the liquid production amount of the produced liquid in the first connecting pipe 30 is larger than the conveying amount of the first centrifugal pump 41 connected with the first tank 21, or the first centrifugal pump 41 connected with the first tank 21 breaks down, the liquid level in the first tank 21 rises, and when the liquid level of the produced liquid in the first tank 21 exceeds the overflow port 212, the produced liquid flows into the second tank 22 from the overflow port 212.

As shown in fig. 2, in the present embodiment, a first check valve 741 is disposed between the outlet of the first centrifugal pump 41 and the first inlet of the second connection pipe 50, and a second check valve 742 is disposed between the outlet of the second centrifugal pump 42 and the second inlet of the second connection pipe 50. In this way, the first check valve 741 can only allow the produced fluid to pass through the first centrifugal pump 41 and be delivered to the oil collecting pipeline 2 through the second connecting pipe 50 after being opened, so as to prevent the produced fluid in the oil collecting pipeline 2 from flowing back. The second check valve 742 can only allow the produced fluid to be delivered to the oil collecting pipeline 2 through the second connecting pipe 50 after the produced fluid passes through the second centrifugal pump 42 and is opened, so that the produced fluid in the oil collecting pipeline 2 is prevented from flowing back.

In this embodiment, the controller controls the level of the liquid level in the first tank 21 to control the opening and closing of the first centrifugal pump 41 corresponding to the first tank 21 according to the detection information of the first liquid level meter 73, so that the oil-producing fluid in the second connecting pipe 50 can be uniformly and stably transferred to the crude oil processing device. The controller can also control the level of the liquid level in the second tank 22 to control the opening and closing of the second centrifugal pump 42 corresponding to the second tank 22 according to the detection information of the second liquid level meter, so that the oil production liquid in the second connecting pipe 50 can be evenly and stably transferred to the crude oil processing device.

The controller is provided with a high liquid level early warning device, and only the first centrifugal pump 41 is started to work in normal operation. When the liquid level in the first tank 21 exceeds the detection height of the first liquid level meter 73, the high liquid level early warning device sends out early warning information, which indicates that the first centrifugal pump 41 has a fault or that the liquid amount of the output liquid of the first centrifugal pump 41 is large. The controller controls the second centrifugal pump 42 to start, meanwhile, the early warning information can be sent to relevant management software in a mobile phone of a preset relevant manager, and after the early warning information appears, the manager can conveniently process the information in time. The operation conditions of the first centrifugal pump 41 and the second centrifugal pump 42 can be observed at any time through mobile phone management software.

The application also provides crude oil gathering and transportation equipment, and in the embodiment, the crude oil gathering and transportation equipment comprises a skid device, and the skid device is the skid device. Because the skid-mounted device can solve the problems that the secondary hauling cost generated when the oil tank truck is used for collecting produced liquid in the related technology is high and the cost is not saved, the crude oil gathering and transportation equipment comprising the skid-mounted device has the same technical effect.

In the related technology, single-well produced liquid cannot enter a crude oil treatment device in time due to single-well back pressure or insufficient single-well produced liquid energy, so that single-well yield reduction is caused, and even the crude oil treatment device flows back to a single well. The skid-mounted device of this embodiment can furthest's improvement individual well produced liquid in time recovery time rate. The skid-mounted device can improve the efficiency of crude oil gathering and transportation equipment, improves the safety and environmental protection of the crude oil gathering and transportation equipment, is suitable for various single wells with poor production conditions such as long gathering and transportation distance, poor single well produced liquid fluidity and high single well back pressure, improves the single well produced liquid transferring capacity through optimization, improves the single well yield to the maximum extent, reduces the environmental pollution risk and the pulling cost generated by the pulling oil tank truck in the pulling transportation process, and has good economic benefit and social benefit.

As shown in fig. 1, in the present embodiment, the crude oil gathering and transportation equipment further includes a wellhead valve 1, a crude oil collecting pipeline 2 and a crude oil processing device, the wellhead valve 1 includes a main gate valve V1 and an auxiliary gate valve V2, and the auxiliary gate valve V2 is communicated with an inlet of the first connecting pipe 30 of the skid-mounted device. The main gate valve V1 is communicated with a first inlet of the oil collecting pipeline 2, an outlet of a second connecting pipe 50 of a second connecting pipe of the skid-mounted device is communicated with a second inlet of the oil collecting pipeline 2, and an outlet of the oil collecting pipeline 2 is communicated with a crude oil processing device.

Specifically, as shown in fig. 1 and 2, the crude oil gathering and transportation equipment is installed as follows:

1) the skid is mounted at a suitable location between the wellhead valve 1 and the gathering line.

2) And (4) removing the plug on the auxiliary gate valve V2, and connecting the auxiliary gate valve V2 with the first end of the first threaded short circuit on the machined flange.

3) And connecting the second end of the first threaded short circuit on the machined flange with the liquid inlet end of the first connecting pipe 30.

4) And (4) removing the plug on the main gate valve V1, and connecting the main gate valve V1 with the machined second threaded short circuit with the flange.

5) And connecting the machined second threaded short joint with the liquid outlet end of the second connecting pipe 50.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A skid-mounted device detachably connected between a wellhead valve (1) and a collecting pipeline (2), characterized in that the skid-mounted device comprises:

a base (10);

the device comprises a first connecting pipe (30), a first tank body (21) and a second tank body (22), wherein the first tank body (21) and the second tank body (22) are connected to the base (10), the first tank body (21) is communicated with the wellhead valve (1) through the first connecting pipe (30), and the first tank body (21) is communicated with the second tank body (22) through an overflow channel;

the oil collecting device comprises a second connecting pipe (50), a first centrifugal pump (41) and a second centrifugal pump (42), wherein the first centrifugal pump (41) and the second centrifugal pump (42) are connected with the second connecting pipe (50), the first centrifugal pump (41) and the second centrifugal pump (42) are connected to the base (10), the first centrifugal pump (41) is communicated with the first tank body (21), the second centrifugal pump (42) is communicated with the second tank body (22), and the first centrifugal pump (41) and the second centrifugal pump (42) are communicated with the oil collecting pipeline (2) through the second connecting pipe (50).

2. The skid according to claim 1, wherein an inlet of the first tank (21) is connected to an outlet of the first connecting pipe (30), the skid further comprising a sand remover (60) connected between the inlet of the first tank (21) and the outlet of the first connecting pipe (30).

3. The skid device as set forth in claim 2, wherein an exhaust line (61) is provided at an exhaust port of the sand remover (60), and the skid device further comprises a gas handler (71) provided on the exhaust line (61).

4. The skid device as set forth in claim 2, wherein the first tank (21) is provided with a sand cleaning hole (211).

5. The skid according to claim 1, further comprising a controller and a first fluid level gauge (73) and a second fluid level gauge connected to the controller, the first fluid level gauge (73) connected to the first tank (21) and the second fluid level gauge connected to the second tank (22), the first centrifugal pump (41) and the second centrifugal pump (42) both connected to the controller.

6. The skid according to claim 1, wherein a first control valve (721) is provided between the first tank (21) and the first centrifugal pump (41), and a second control valve (722) is provided between the second tank (22) and the second centrifugal pump (42).

7. The skid device as set forth in claim 1, further comprising a housing and a partition disposed within said housing and dividing said housing into said first tank (21) and said second tank (22), said partition having an overflow port (212) disposed thereon.

8. The skid according to claim 1, wherein a first check valve (741) is disposed between an outlet of the first centrifugal pump (41) and a first inlet of the second connecting pipe (50), and a second check valve (742) is disposed between an outlet of the second centrifugal pump (42) and a second inlet of the second connecting pipe (50).

9. Crude oil gathering and transportation equipment comprising a skid, wherein the skid is the skid of any one of claims 1 to 8.

10. Crude oil gathering equipment according to claim 9, characterized in that the crude oil gathering equipment further comprises a wellhead valve (1), an oil collecting pipeline (2) and a crude oil processing device, the wellhead valve (1) comprises a main gate valve (V1) and an auxiliary gate valve (V2), the auxiliary gate valve (V2) is communicated with an inlet of the skid first connecting pipe (30), the main gate valve (V1) is communicated with a first inlet of the oil collecting pipeline (2), an outlet of the skid second connecting pipe (50) is communicated with a second inlet of the oil collecting pipeline (2), and an outlet of the oil collecting pipeline (2) is communicated with the crude oil processing device.