Oil field yield increasing device utilizing carbon dioxide

Abstract

The utility model relates to the technical field of oil fields, and provides an oil field yield increasing device utilizing carbon dioxide, which comprises a bottom plate, a liquid storage tank is arranged at the top of the bottom plate, a pressurizing connecting component is arranged at the upper end of the bottom plate, and a pressurizing liquid supply component is arranged on the upper end surface of the bottom plate; the pressurizing connecting assembly comprises a pressurizing pipe, the pressurizing pipe is arranged on the bottom plate, a liquid outlet pipe is arranged at one end of the liquid storage tank, a connecting sleeve is arranged at the tail end of the pressurizing pipe and sleeves the tail end of the liquid outlet pipe, a connecting pipe is inserted into the other end of the connecting sleeve in a sealed mode, and mounting pieces are arranged on the end faces of the liquid outlet pipe and the connecting pipe. A positioning rod is arranged between the installation pieces, a one-way flow guide cover is arranged on the section of the liquid outlet pipe, and a flow guide hole is formed in the one-way flow guide cover. According to the technical scheme, the liquid carbon dioxide is injected into the oil-gas well through the injection equipment, oil displacement and yield increase can be carried out or other yield increase measures such as acidification and fracturing can be matched, the liquid carbon dioxide is injected into the oil-gas well, crude oil and natural gas in a reservoir are displaced, and the yield increase purpose is achieved.

Description

Technical Field

[0001] This utility model relates to the field of oilfield technology, specifically to an oilfield production enhancement device that utilizes carbon dioxide. Background Technology

[0002] Oil and gas fields are the sum of oil and gas reservoirs within the same oil and gas producing area, controlled by a single geological structure (or stratigraphy). An oil and gas field may have one or more oil and gas reservoirs. An area primarily containing oil reservoirs is called an oil field, and an area primarily containing gas reservoirs is called a gas field. Based on the geological factors controlling the oil and gas producing area, oil and gas fields are divided into three categories: ① Structural oil and gas fields, which refer to oil and gas producing areas controlled by a single structural factor, such as folds and faults; ② Stratigraphic oil and gas fields, which are oil-bearing areas controlled by stratigraphic factors (such as unconformities, pinch-outs, and lithological variations) on a regional anticline or monocline structural background; ③ Composite oil and gas fields, which are oil and gas producing areas not controlled by a single structural or stratigraphic factor, but by multiple geological factors.

[0003] Oilfields typically inject liquid carbon dioxide into oil and gas wells using injection equipment to enhance oil production or in conjunction with other production enhancement measures such as acidizing and fracturing. By injecting liquid carbon dioxide into oil and gas wells, crude oil and natural gas in the reservoir are displaced, thereby increasing production. Therefore, an oilfield production enhancement device utilizing carbon dioxide is being developed. Utility Model Content

[0004] This invention proposes an oilfield production enhancement device that utilizes carbon dioxide. It enables the injection of liquid carbon dioxide into oil and gas wells via an injection device, which can be used for oil displacement and production enhancement or in conjunction with other production enhancement measures such as acidizing and fracturing. By injecting liquid carbon dioxide into oil and gas wells, it displaces crude oil and natural gas in the reservoir, thereby achieving the purpose of increasing production.

[0005] The technical solution of this utility model is as follows: including...

[0006] A base plate, on top of which a liquid storage tank is provided;

[0007] A pressure-pressurizing connection assembly is disposed at the upper end of the base plate;

[0008] A pressurized liquid supply assembly is disposed on the upper end surface of the base plate;

[0009] The pressurized connection assembly includes a pressurized pipe disposed on the base plate. One end of the liquid storage tank is provided with a liquid outlet pipe. The end of the pressurized pipe is provided with a connecting sleeve, which is fitted onto the end of the liquid outlet pipe. The other end of the connecting sleeve is sealed with a connecting pipe. The end faces of the liquid outlet pipe and the connecting pipe are provided with mounting plates. A positioning rod is provided between the mounting plates. A one-way flow guide is provided at the cross-section of the liquid outlet pipe, and a flow guide hole is provided on the one-way flow guide.

[0010] As a further technical solution, the pressurizing pipe is connected to the connecting sleeve, and there are several mounting pieces, which are evenly distributed on the liquid outlet pipe and the connecting pipe.

[0011] As a further technical solution, the pressurized liquid supply assembly includes a pump frame, which is mounted on the base plate. A pressurized pump is mounted on the upper end of the pump frame, and the pressurized pump is connected to the pressurized pipe.

[0012] As a further technical solution, a locking frame is provided at the lower end of the base plate.

[0013] As a further technical solution, the diameter of the outlet pipe matches that of the connecting pipe, and the outlet pipe, the connecting pipe and the connecting sleeve are sealed at the insertion position. A support frame is provided at the bottom of the outlet pipe and the connecting pipe, and the support frame is provided on the upper surface of the base plate.

[0014] As a further technical solution, the mounting plate is fixedly attached to the liquid outlet pipe and the connecting pipe.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] In this invention, carbon dioxide from a liquid storage tank flows out through an outlet pipe. After being pressurized within a connecting sleeve, the liquid carbon dioxide flows into the connecting pipe through a guide hole on a one-way flow guide cover. A pressurizing pump on the pump frame pressurizes the liquid carbon dioxide in the outlet pipe through a pressurizing pipe. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the connecting sleeve of this utility model;

[0020] Figure 3 This is a cross-sectional view of the liquid outlet pipe of this utility model;

[0021] In the diagram: 1. Base plate; 2. Liquid storage tank; 3. Pressurization connection assembly; 3-1. Pressurization pipe; 3-2. Liquid outlet pipe; 3-3. Connecting sleeve; 3-4. Connecting pipe; 3-5. Mounting plate; 3-6. Positioning rod; 3-7. One-way flow guide shroud; 3-8. Flow guide hole; 4. Pressurization liquid supply assembly; 4-1. Pump frame; 4-2. Pressurization pump; 5. Locking frame; 6. Support frame. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1-3 As shown, this embodiment proposes an oilfield production enhancement device utilizing carbon dioxide, including...

[0024] A base plate 1, with a liquid storage tank 2 disposed on the top of the base plate 1;

[0025] A pressure-pressurizing connection assembly 3 is disposed at the upper end of the base plate 1;

[0026] A pressurized liquid supply assembly 4 is disposed on the upper end surface of the base plate 1;

[0027] The pressurized connection assembly 3 includes a pressurized pipe 3-1, which is mounted on the base plate 1. One end of the liquid storage tank 2 is provided with a liquid outlet pipe 3-2. The end of the pressurized pipe 3-1 is provided with a connecting sleeve 3-3, which is fitted onto the end of the liquid outlet pipe 3-2. The other end of the connecting sleeve 3-3 is sealed with a connecting pipe 3-4. The end faces of the liquid outlet pipe 3-2 and the connecting pipe 3-4 are provided with mounting pieces 3-5. A positioning rod 3-6 is provided between the mounting pieces 3-5. A one-way flow guide shroud 3-7 is provided at the cross-section of the liquid outlet pipe 3-2, and a flow guide hole 3-8 is provided on the one-way flow guide shroud 3-7.

[0028] In this embodiment, the connecting sleeve 3-3 on the pressurizing pipe 3-1 is used to seal the liquid outlet pipe 3-2 and the connecting pipe 3-4. The carbon dioxide in the liquid storage tank 2 flows out from the liquid outlet pipe 3-2 and is pressurized in the connecting sleeve 3-3, so that the liquid carbon dioxide flows into the connecting pipe 3-4 through the guide hole 3-8 on the one-way guide cover 3-7, thereby pressurizing the liquid carbon dioxide.

[0029] Specifically, the pressurizing pipe 3-1 is connected to the connecting sleeve 3-3, and there are several mounting pieces 3-5, which are evenly distributed on the liquid outlet pipe 3-2 and the connecting pipe 3-4.

[0030] Furthermore, the pressurized liquid supply assembly 4 includes a pump frame 4-1, which is mounted on the base plate 1. A pressurized pump 4-2 is mounted on the upper end of the pump frame 4-1, and the pressurized pump 4-2 is connected to the pressurized pipe 3-1.

[0031] In this embodiment, the pressurizing pump 4-2 on the pump frame 4-1 pressurizes the liquid carbon dioxide in the outlet pipe 3-2 through the pressurizing pipe 3-1.

[0032] Furthermore, a locking bracket 5 is provided at the lower end of the base plate 1.

[0033] In this embodiment, the locking bracket 5 is used to fix the position of the base plate 1.

[0034] Furthermore, the diameters of the outlet pipe 3-2 and the connecting pipe 3-4 are matched, and the outlet pipe 3-2, the connecting pipe 3-4, and the connecting sleeve 3-3 are sealed together at their insertion positions. A support frame 6 is provided at the bottom of the outlet pipe 3-2 and the connecting pipe 3-4, and the support frame 6 is located on the upper surface of the base plate 1. The mounting piece 3-5 is fixedly attached to the outlet pipe 3-2 and the connecting pipe 3-4.

[0035] In this embodiment, the support frame 6 is used to support the liquid outlet pipe 3-2 and the connecting pipe 3-4.

[0036] When carbon dioxide needs to be pressurized and injected into the oil and gas well, the carbon dioxide in the liquid storage tank 2 flows out from the outlet pipe 3-2. After being pressurized in the connecting sleeve 3-3, the liquid carbon dioxide flows into the connecting pipe 3-4 through the guide hole 3-8 on the one-way guide shroud 3-7. The pressurizing pump 4-2 on the pump frame 4-1 pressurizes the liquid carbon dioxide in the outlet pipe 3-2 through the pressurizing pipe 3-1. The one-way guide shroud 3-7 prevents the liquid carbon dioxide from flowing back.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An oil field stimulation device utilizing carbon dioxide, characterized by, Comprising a bottom plate (1), a top of the bottom plate (1) is provided with a liquid storage tank (2); a pressurized connection assembly (3) is provided at an upper end of the bottom plate (1); a pressurized liquid supply assembly (4) is provided at an upper end surface of the bottom plate (1); the pressurized connection assembly (3) comprises a pressurized pipe (3-1) provided on the bottom plate (1), one end of the liquid storage tank (2) is provided with a liquid outlet pipe (3-2), an end of the pressurized pipe (3-1) is provided with a connecting sleeve (3-3), the connecting sleeve (3-3) is sleeved on an end of the liquid outlet pipe (3-2), the other end of the connecting sleeve (3-3) is sealingly inserted with a connecting pipe (3-4), the end surfaces of the liquid outlet pipe (3-2) and the connecting pipe (3-4) are provided with mounting pieces (3-5), the mounting pieces (3-5) are provided with positioning rods (3-6) therebetween, the liquid outlet pipe (3-2) is provided with a one-way flow guide cover (3-7) at a cross section thereof, the one-way flow guide cover (3-7) is provided with flow guide holes (3-8).

2. The oil field stimulation device utilizing carbon dioxide according to claim 1, wherein, the pressurized pipe (3-1) is connected to the connecting sleeve (3-3), the number of the mounting pieces (3-5) is several, and the plurality of mounting pieces (3-5) are uniformly distributed on the liquid outlet pipe (3-2) and the connecting pipe (3-4).

3. The oil field stimulation device utilizing carbon dioxide according to claim 1, wherein the pressurized liquid supply assembly (4) comprises a pump frame (4-1) provided on the bottom plate (1), an upper end of the pump frame (4-1) is provided with a pressurized pump (4-2), and the pressurized pump (4-2) is connected to the pressurized pipe (3-1).

4. The oil field stimulation device utilizing carbon dioxide of claim 1, wherein, a locking frame (5) is provided at a lower end of the bottom plate (1).

5. The oil field stimulation device utilizing carbon dioxide of claim 1, wherein, the liquid outlet pipe (3-2) and the connecting pipe (3-4) are matched in diameter, the liquid outlet pipe (3-2), the connecting pipe (3-4) and the connecting sleeve (3-3) are sealingly connected at a plug-in position thereof, and the bottom of the liquid outlet pipe (3-2) and the connecting pipe (3-4) is provided with a support frame (6) provided on the upper end surface of the bottom plate (1).

6. The oil field stimulation device utilizing carbon dioxide of claim 1, wherein, the mounting pieces (3-5) are fixedly attached to the liquid outlet pipe (3-2) and the connecting pipe (3-4).

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