CN221973470U - Oil production wellhead device with pressurizing function - Google Patents

Abstract

The utility model relates to the technical field of oil well production, and discloses an oil wellhead device with a pressurizing function, comprising a connecting pipe, wherein the bottom of the connecting pipe is connected to a first flange plate for connecting a pipeline for pumping oil from the oil wellhead; a pressurizing pipe is arranged on the outer wall of the connecting pipe, and air in the connecting pipe is pumped out by an air pump in a pressurizing chamber, so that the pressure in the connecting pipe becomes low, so that the liquid level in the oil pumping pipeline of the oil wellhead connected to the connecting pipe is gradually raised due to the atmospheric pressure, so as to facilitate subsequent oil output; a hydraulic cylinder is arranged to drive a piston rod to reciprocate, and the air inside the connecting pipe is pumped out when the piston rod moves upward, and the squeezed air is pumped out by the air pump when the piston rod moves downward, and the air is pumped out by such cooperation to improve the efficiency of the rising of the liquid level.

Description

Oil production wellhead device with pressurizing function

Technical Field

The utility model relates to the technical field of oil production wells, in particular to an oil production wellhead device with a pressurizing function.

Background Art

Wellhead device is a device installed at the wellhead during oil and gas drilling to hang casing and oil pipes and seal the annular spaces between the oil pipes and casing and each layer of casing. The water injection wellhead device is a type of wellhead device. When oil is extracted, water needs to be injected into the oil well to increase pressure. The oil is squeezed upward by the water pressure, making it easier for the oil wellhead device to extract oil.

After searching, the Chinese patent with publication number: CN219241873U discloses an oil production wellhead device with a pressurizing function, including: a wellhead device body, an oil production chamber is arranged inside the wellhead device body, a partition plate is arranged inside the wellhead device body, a pressurizing chamber is arranged at one end of the partition plate, and a pressurizing interface is arranged at one end of the bottom of the wellhead device body; a side plate, the side plate is located at one end of the bottom of the wellhead device body, a first rotating groove is arranged inside the side plate, a shift plate is arranged inside the first rotating groove, and the other end of the shift plate is fixedly connected to the sealing plate; a second rotating groove, the second rotating groove is located inside the sealing plate, a rotating rod is arranged inside the second rotating groove, and one end of the rotating rod is fixedly connected to the torsion plate; the beneficial effect is: the utility model can inject water into the oil well through the pressurizing interface in the proposed oil production wellhead device with water injection function in conjunction with the pressurizing chamber, so that the wellhead device body has a pressurizing function.

but:

In this scheme, water can be injected into the oil well through the pressurization interface in the proposed oil wellhead device with water injection function and the pressurization chamber, so that the wellhead device body has a pressurization function. However, water injection is actually required, which is a waste of water resources. Therefore, an oil wellhead device with a pressurization function is proposed.

Utility Model Content

1. Technical issues to be solved

In view of the deficiencies in the prior art, the utility model provides an oil production wellhead device with a pressurizing function.

(II) Technical solution

To achieve the above object, the utility model provides the following technical solutions: an oil wellhead device with a pressurizing function, comprising a connecting pipe, the bottom of which is connected to a first flange plate for connecting a pipeline for pumping oil from an oil wellhead;

The outer wall of the connecting pipe is connected to three groups of pressurized pipes, one end of the pressurized pipe is connected to a pressurized chamber, and the pressurized chamber is connected to an air pump for extracting air from the connecting pipe;

A piston tube is connected to the top of the connecting tube, and a piston rod is slidably connected to the inner wall of the piston tube for extracting the air inside the connecting tube. A pressurized tube is arranged on the outer wall of the connecting tube, and the air in the connecting tube is extracted by an air pump in the pressurized chamber, so that the pressure in the connecting tube becomes low, and the liquid level in the oil extraction pipeline at the oil wellhead connected to the connecting tube is gradually raised due to the atmospheric pressure, so as to facilitate the subsequent oil output.

Preferably, the inner wall of the pressurized pipe is connected to a first throttle valve for controlling the flow of the pressurized pipe.

Preferably, a connecting plate is fixedly connected to the back side of the outer wall of the piston tube, a hydraulic cylinder is connected to the bottom of the top of the connecting plate, and the output end of the hydraulic cylinder is connected to the piston rod to drive the piston rod to reciprocate. The piston rod is driven to reciprocate by setting the extension and contraction of the hydraulic cylinder. When the piston rod moves upward, the air inside the connecting tube will be extracted, and when the piston rod is pressed downward, the squeezed air will be sucked out by the vacuum pump. The air is extracted by such cooperation to improve the efficiency of the rising liquid level.

Preferably, the diameter of the piston tube is larger than the diameter of the connecting tube. By setting a larger tube diameter, the air capacity during suction can be further increased.

Preferably, the front side of the connecting pipe is connected to an oil outlet pipe for discharging the oil slurry.

Preferably, one end of the oil outlet pipe is connected to a second flange for connecting to the oil inlet of the oil pump, and the inner wall of the oil outlet pipe is connected to a second throttle valve for controlling the flow rate of the oil outlet pipe. The second flange is connected to the oil inlet of the oil pump to facilitate the suction of oil slurry. The second throttle valve is set to control the flow rate of the oil outlet pipe. When the oil outlet pipe discharges oil, the suction pump is stopped and the first throttle valve is closed, so that the connecting pipe is in a closed cavity, so as to facilitate the subsequent oil pump to continue to pump, so as to ensure continuous oil supply to the oil outlet pipe.

(III) Beneficial effects

Compared with the prior art, the utility model provides an oil production wellhead device with a pressurizing function, which has the following beneficial effects:

1. An oil wellhead device with a pressurizing function, by arranging a pressurizing pipe on the outer wall of a connecting pipe, the air in the connecting pipe is extracted by an air pump in a pressurizing chamber, so that the pressure in the connecting pipe becomes low, so that the liquid level in the oil extraction pipeline of the oil wellhead connected to the connecting pipe is gradually raised due to the atmospheric pressure, so as to facilitate the subsequent oil discharge, and by arranging the extension and contraction of the hydraulic cylinder to drive the piston rod to reciprocate, the air inside the connecting pipe is extracted when the piston rod moves upward, and the squeezed air is extracted by the air pump when the piston rod moves downward, and the air is extracted by the air pump through such cooperation to improve the efficiency of the liquid level rising.

2. This oil production wellhead device with a pressurizing function is connected to the oil inlet of the oil pump by a second flange to facilitate the suction of oil slurry. The flow of the oil outlet pipe is controlled by a second throttle valve. When the oil outlet pipe is discharging oil, the air pump is stopped and the first throttle valve is closed, so that the connecting pipe is in a closed cavity to facilitate the subsequent oil pump to continue pumping, thereby ensuring continuous oil supply to the oil outlet pipe.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

Fig. 1 is a front view of the utility model;

Fig. 2 is a top view of the utility model;

FIG. 3 is an enlarged view of A of the present utility model.

In the figure: 1, connecting pipe; 11, first flange; 2, pressurizing pipe; 21, pressurizing chamber; 22, first throttle valve; 23, vacuum pump; 3, oil outlet pipe; 31, second flange; 32, second throttle valve; 4, piston tube; 41, piston rod; 42, connecting plate; 43, hydraulic cylinder.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

Example 1

As shown in Figures 1-3, the utility model provides an oil wellhead device with a pressurizing function, including a connecting pipe 1, the bottom of the connecting pipe 1 is connected to a first flange 11 for connecting a pipeline for pumping oil from the oil wellhead, the outer wall of the connecting pipe 1 is connected to three groups of pressurizing pipes 2, one end of the pressurizing pipe 2 is connected to a pressurizing chamber 21, the pressurizing chamber 21 is connected to an air pump 23 for extracting air from the inside of the connecting pipe 1, the top of the connecting pipe 1 is connected to a piston tube 4, the inner wall of the piston tube 4 is slidably connected to a piston rod 41 for extracting air from the inside of the connecting pipe 1, and by arranging the pressurizing pipe 2 on the outer wall of the connecting pipe 1 and extracting air from the connecting pipe 1 through the air pump 23 in the pressurizing chamber 21, the pressure of the connecting pipe 1 becomes low, so that the liquid level in the oil extraction pipeline of the oil wellhead connected to the connecting pipe 1 gradually increases due to the atmospheric pressure. It is gradually pulled up to facilitate the subsequent oil discharge. The inner wall of the pressurized pipe 2 is connected to a first throttle valve 22 for controlling the flow of the pressurized pipe 2. The back of the outer wall of the piston tube 4 is fixedly connected to a connecting plate 42. A hydraulic cylinder 43 is connected below the top of the connecting plate 42, and the output end of the hydraulic cylinder 43 is connected to the piston rod 41 for driving the piston rod 41 to reciprocate. The piston rod 41 is driven to reciprocate by setting the extension and contraction of the hydraulic cylinder 43. When the piston rod 41 moves upward, the air inside the connecting pipe 1 is extracted, and when the piston rod 41 is pressed downward, the squeezed air will be extracted by the vacuum pump 23. The air is extracted by such cooperation to improve the efficiency of the liquid level rising. The diameter of the piston tube 4 is larger than the diameter of the connecting tube 1. By setting a larger diameter, the air capacity during suction can be further increased.

In this embodiment, a pressurized pipe 2 is provided on the outer wall of the connecting pipe 1, and the air in the connecting pipe 1 is extracted by the vacuum pump 23 in the pressurized chamber 21, so that the pressure in the connecting pipe 1 becomes low, so that the liquid level in the oil extraction pipeline at the oil wellhead connected to the connecting pipe 1 is gradually raised due to the atmospheric pressure to facilitate the subsequent oil output. The piston rod 41 is driven to reciprocate by the telescopic movement of the hydraulic cylinder 43. When the piston rod 41 moves upward, the air inside the connecting pipe 1 is extracted, and when the piston rod 41 moves downward, the squeezed air will be extracted by the vacuum pump 23. The air is extracted by such cooperation to improve the efficiency of the rising liquid level.

Example 2

As shown in Figures 1-3, on the basis of Example 1, the utility model provides a technical solution: preferably, the front of the connecting pipe 1 is connected to an oil outlet pipe 3 for discharging oil slurry, one end of the oil outlet pipe 3 is connected to a second flange 31 for connecting to the oil inlet of the oil pump, the inner wall of the oil outlet pipe 3 is connected to a second throttle valve 32 for controlling the flow of the oil outlet pipe 3, and the second flange 31 is connected to the oil inlet of the oil pump to facilitate the suction of the oil slurry, and the second throttle valve 32 is arranged to control the flow of the oil outlet pipe 3. When the oil outlet pipe 3 discharges oil, the vacuum pump 23 is stopped and the first throttle valve 22 is closed, so that the connecting pipe 1 is in a closed cavity, so as to facilitate the subsequent oil pump to continue to extract, so as to ensure the continuous supply of oil to the oil outlet pipe 3.

In this embodiment, the oil inlet of the oil pump is connected by a second flange 31 to facilitate the suction of oil slurry, and the flow of the oil outlet pipe 3 is controlled by a second throttle valve 32. When the oil outlet pipe 3 is discharging oil, the air pump 23 is stopped and the first throttle valve 22 is closed, so that the connecting pipe 1 is in a closed cavity to facilitate the subsequent oil pump to continue to pump, thereby ensuring that the oil outlet pipe 3 is continuously supplied with oil.

The working principle of this oil production wellhead device with pressurization function is described in detail below.

As shown in Fig. 1-3, when in use, a pressurized pipe 2 is arranged on the outer wall of the connecting pipe 1, and the air in the connecting pipe 1 is extracted by the air pump 23 in the pressurized chamber 21, so that the pressure in the connecting pipe 1 becomes low, so that the liquid level in the oil extraction pipeline at the oil wellhead connected to the connecting pipe 1 is gradually raised due to the atmospheric pressure, so as to facilitate the subsequent oil discharge. The piston rod 41 is driven to reciprocate by the telescopic movement of the hydraulic cylinder 43. When the piston rod 41 moves upward, the air inside the connecting pipe 1 is extracted, and when the piston rod 41 moves downward, the air inside the connecting pipe 1 is squeezed out. The air that is sucked out will be sucked out by the air pump 23. The air is extracted by such cooperation to improve the efficiency of the liquid level rising. The oil inlet of the oil pump is connected by the second flange 31 to facilitate the suction of the oil slurry. The second throttle valve 32 is set to control the flow of the oil outlet pipe 3. When the oil outlet pipe 3 is discharging oil, the air pump 23 is stopped and the first throttle valve 22 is closed, so that the connecting pipe 1 is in a closed cavity to facilitate the subsequent oil pump to continue to extract, so as to ensure the continuous supply of oil to the oil outlet pipe 3.

Claims (6)

1. Oil recovery wellhead assembly with pressurization function, including connecting pipe (1), its characterized in that: the bottom of the connecting pipe (1) is connected with a first flange plate (11) for connecting a pipeline of pumping oil at a pumping wellhead;

The outer wall of the connecting pipe (1) is connected with three groups of pressurizing pipes (2), one end of each pressurizing pipe (2) is connected with a pressurizing bin (21), and each pressurizing bin (21) is connected with an air extracting pump (23) for extracting air in the connecting pipe (1);

The top of connecting pipe (1) is connected with piston tube (4), the inner wall sliding connection of piston tube (4) has piston rod (41) for the inside air of extraction connecting pipe (1).

2. A wellhead assembly according to claim 1, characterised in that: the inner wall of the pressurizing pipe (2) is connected with a first throttle valve (22) for controlling the flow of the pressurizing pipe (2).

3. A wellhead assembly according to claim 1, characterised in that: the back of piston tube (4) outer wall fixedly connected with connecting plate (42), the below at connecting plate (42) top is connected with pneumatic cylinder (43), and the output of pneumatic cylinder (43) is connected with piston rod (41) for drive piston rod (41) reciprocating motion.

4. A wellhead assembly according to claim 1, characterised in that: the pipe diameter of the piston pipe (4) is larger than that of the connecting pipe (1).

5. A wellhead assembly according to claim 1, characterised in that: the front of the connecting pipe (1) is connected with an oil outlet pipe (3) for discharging oil slurry.

6. A wellhead assembly with pressurization according to claim 5, characterised in that: one end of the oil outlet pipe (3) is connected with a second flange plate (31) for being connected with an oil inlet of an oil pump, and the inner wall of the oil outlet pipe (3) is connected with a second throttle valve (32) for controlling the flow of the oil outlet pipe (3).