Oil nozzle sleeve

Abstract

The utility model belongs to the field of oil production engineering, and discloses an oil nozzle sleeve. Comprising a sampling valve, a watering heat tracing sleeve, a pressure gauge, a ball seat, a steel ball, a six-hole oil discharge groove, a spring, a pressure setting pull rod, a pressure setting hand wheel, a thermometer jack and a clamp head. The anti-backflow device can effectively prevent backflow. Output liquid of a heavy oil well enters a five-gear adjustable-gear oil nozzle sleeve channel through an oil nozzle sleeve inlet and is gathered in the channel, when oil pressure is larger than return pressure, the output liquid jacks open a check valve ball, a check valve spring retracts by a certain distance, the output liquid enters an oil discharging groove and enters an oil return pipeline together with mixed water to enter a station, and when the oil pressure is equal to or smaller than the return pressure, the check valve spring does work, and the output liquid enters the oil discharging groove. And the check ball is set, so that return oil is prevented from flowing backwards.

Description

Technical Field

[0001] The utility model belongs to the field of oil production engineering, and specifically relates to an oil nozzle sleeve. Background Art

[0002] The Liaohe Oilfield's oil production wells mainly produce heavy oil and extra-heavy oil. At the end of the blowout production of heavy oil and extra-heavy oil wells, the well fluid backflow phenomenon often occurs because the oil pipe pressure of the blowout well is less than the oil return system pressure. When entering winter production, this backflow phenomenon will cause the oil nozzle sleeve and production process to freeze and block, and the formation pressure of the heavy oil blowout well cannot be effectively released, which will extend the blowout time of the blowout well, affect the pumping operation, and the production time of the oil well. Improper handling can easily cause sand to be excited in the oil well, freeze the oil well production process, and cause crude oil leakage to pollute the environment and blowout accidents.

[0003] In addition, during the winter shutdown period of heavy oil wells and during the construction of heavy oil wells, the oil well nozzles and production processes often freeze and become blocked, posing certain safety hazards and causing large-scale environmental pollution in severe cases. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, the utility model provides an oil nozzle sleeve, which can effectively prevent the backflow of the infusion outside the return oil valve, prevent the oil nozzle sleeve and the production process from freezing and blocking, and at the same time ensure that the formation pressure can be fully released at the end of the production of the blowout well, improve the success rate of the operation pump, increase the opening time of the oil well, reduce the labor intensity of employees, reduce safety hazards, and prevent environmental pollution.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical solutions: an oil nozzle sleeve, comprising a sampling valve, a water-mixed heating sleeve, a pressure gauge, a ball seat, a steel ball, a six-hole oil unloading groove, a spring, a pressure adjustment rod, a pressure adjustment handwheel, a thermometer jack, and a clamp head; the oil nozzle is installed in the water-mixed heating sleeve, one end of the oil nozzle is connected to the inner side of the water-mixed heating sleeve, and a sampling valve is provided on the outer side of the water-mixed heating sleeve connected thereto, the other end of the oil nozzle is connected to a ball seat, the ball seat is connected to the six-hole oil unloading groove, a steel ball is provided in the ball seat, the steel ball is connected to one end of the spring, the other end of the spring is connected to one end of the pressure adjustment rod, the other end of the pressure adjustment rod is provided with a pressure adjustment handwheel, the clamp head is installed at the bottom of the water-mixed heating sleeve, the pressure gauge is provided on the water-mixed heating sleeve, and the thermometer jack is provided on the water-mixed heating sleeve close to the clamp head.

[0006] Furthermore, the connection method of the nozzle sleeve in the oil production system is: the nozzle sleeve clamp head is the nozzle sleeve outlet, the nozzle sleeve outlet is connected to a thick high-pressure hose as an oil return pipeline, the oil return pipeline is provided with an oil return valve, the nozzle sleeve is also provided with a nozzle sleeve inlet, a thin high-pressure hose is connected to the nozzle sleeve inlet, the thin high-pressure hose is connected to the water injection heating valve on the water injection pipeline, a single-well liquid injection valve is also provided on the water injection pipeline, the water injection pipeline and the oil return pipeline are connected by a branch, an oil well connecting valve is provided on the branch, and the nozzle sleeve inlet is connected to the wellhead production valve on the production wellhead.

[0007] Furthermore, the specification of the steel ball is φ45mm.

[0008] Furthermore, the oil nozzle is a five-speed adjustable oil nozzle, and the diameters are 3mm, 5mm, 8mm, 12mm and 40mm respectively.

[0009] Furthermore, the five-speed adjustable oil nozzle is adjusted using a wrench or a pipe wrench.

[0010] Furthermore, the diameter of the thick high-pressure hose is 2 inches.

[0011] Furthermore, the diameter of the thin high-pressure hose is 1 inch.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model can effectively prevent backflow. The produced liquid of the heavy oil well passes through the inlet of the nozzle sleeve, enters the channel of the 5-speed adjustable nozzle sleeve, and gathers in the channel. When the oil pressure is greater than the back pressure, the produced liquid pushes the check valve ball, the check valve spring retracts a distance, the produced liquid enters the oil unloading tank, and enters the return oil pipeline station together with the water. When the oil pressure is equal to or less than the back pressure, the check valve spring works, the check ball is sealed, and the return oil backflow is prevented.

[0013] The utility model can prevent the oil nozzle sleeve and the process from freezing in winter. The device is connected to a 1-inch high-pressure hose, and water is mixed into the heating sleeve of the device for heating, and then enters the oil return pipeline into the station through the oil unloading tank together with the output liquid.

[0014] The utility model has 5-speed adjustable oil nozzles and is suitable for production in different production stages of heavy oil wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.

[0016] Figure 1 This is a schematic diagram of the structure of the oil nozzle sleeve of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the water-mixed heating sleeve of the oil nozzle sleeve of the utility model;

[0018] Figure 3The utility model is a schematic diagram of the connection structure of the oil nozzle sleeve in the oil production system.

[0019] In the figure, 1. sampling valve; 2. water-injected heating sleeve; 3. pressure gauge; 4. oil nozzle; 5. ball seat; 6. steel ball; 7. six-hole oil unloading groove; 8. spring; 9. pressure adjustment rod; 10. pressure adjustment hand wheel; 11. thermometer socket; 12. clamp head; 13. oil nozzle sleeve inlet; 14. oil nozzle sleeve outlet; 15. thick high-pressure hose; 16. oil return valve; 17. thin high-pressure hose; 18. water-injected heating valve; 19. single-well liquid injection valve; 20. oil well connecting valve; 21. wellhead production valve. DETAILED DESCRIPTION

[0020] The present invention is described in detail below through specific examples, but the protection scope of the present invention is not limited. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can be obtained from commercial channels.

[0021] Example 1

[0022] An oil nozzle sleeve comprises a sampling valve, a water-mixed heating sleeve, a pressure gauge, a ball seat, a steel ball, a six-hole oil unloading groove, a spring, a pressure adjustment rod, a pressure adjustment handwheel, a thermometer jack, and a clamp head; the oil nozzle is installed in the water-mixed heating sleeve, one end of the oil nozzle is connected to the inner side of the water-mixed heating sleeve, a sampling valve is arranged on the outer side of the water-mixed heating sleeve connected thereto, the other end of the oil nozzle is connected to a ball seat, the ball seat is connected to the six-hole oil unloading groove, a steel ball is arranged in the ball seat, the steel ball is connected to one end of the spring, the other end of the spring is connected to one end of the pressure adjustment rod, the other end of the pressure adjustment rod is provided with a pressure adjustment handwheel, the clamp head is installed at the bottom of the water-mixed heating sleeve, and the pressure gauge is arranged at On the water-injected heating sleeve, the thermometer jack is arranged on the water-injected heating sleeve near the clamp head; the connection method of the oil nozzle sleeve in the oil production system is: the clamp head of the oil nozzle sleeve is the oil nozzle sleeve outlet, the oil nozzle sleeve outlet is connected to a thick high-pressure hose as an oil return pipeline, the oil return pipeline is provided with an oil return valve, the oil nozzle sleeve is also provided with an oil nozzle sleeve inlet, a thin high-pressure hose is connected to the oil nozzle sleeve inlet, the thin high-pressure hose is connected to the water-injected heating valve on the water injection pipeline, a single-well liquid injection valve is also provided on the water injection pipeline, the water injection pipeline and the oil return pipeline are connected by a branch, an oil well connecting valve is provided on the branch, and the oil nozzle sleeve inlet is connected to the wellhead production valve on the production wellhead.

[0023] The specification of the steel ball is φ45mm.

[0024] The oil nozzle is a five-speed adjustable oil nozzle with diameters of 3mm, 5mm, 8mm, 12mm and 40mm respectively. The five-speed adjustable oil nozzle is adjusted using a wrench or a pipe clamp.

[0025] The diameter of the thick high-pressure hose is 2 inches.

[0026] The diameter of the thin high-pressure hose is 1 inch.

[0027] When the new oil nozzle sleeve is installed and used, the manual 5-speed adjustment of the oil nozzle is fast and convenient, the components are flexible and easy to use, and the formation pressure can be effectively released at the end of the blowout, shortening the blowout time of the heavy oil well. The new oil nozzle sleeve is light in weight, quick and convenient to install, reduces the labor intensity of employees, increases the opening rate of heavy oil wells, and has functions such as anti-freezing and anti-oil backflow, and is suitable for promotion and installation in heavy oil wells.

[0028] The new type of nozzle sleeve mainly solves the following technical problems:

[0029] (1) Prevent oil backflow. At the end of the heavy oil well blowout, during the heavy oil well shutdown period, during the heavy oil well operation and construction period, the check valve spring will push the check ball to the ball seat position to seal it, preventing oil backflow.

[0030] (2) Anti-freeze function: Add water to heat the oil nozzle sleeve to prevent the oil nozzle sleeve and oil return pipeline from freezing.

[0031] (3) Manually adjustable pressure structure. The pressure can be adjusted quickly and conveniently by extending and pulling the manually adjustable pressure screw.

[0032] (4) Five sizes of nozzles are available, suitable for different production stages of heavy oil wells.

[0033] The new nozzle sleeve can effectively prevent oil backflow and freezing of the nozzle sleeve and production process in winter production in the Northeast region. It can fully release the formation pressure at the end of the blowout well production, increase the well opening rate, and reduce the labor intensity of employees.

[0034] The above-mentioned embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A nozzle sleeve, characterized in that: The invention comprises a sampling valve (1), a water-mixed heating sleeve (2), a pressure gauge (3), a ball seat (5), a steel ball (6), a six-hole oil unloading groove (7), a spring (8), a pressure adjustment rod (9), a pressure adjustment hand wheel (10), a thermometer jack (11), and a clamp head (12); an oil nozzle (4) is installed in the water-mixed heating sleeve (2), one end of the oil nozzle (4) is connected to the inner side of the water-mixed heating sleeve (2), a sampling valve (1) is arranged on the outer side of the water-mixed heating sleeve (2), and the other end of the oil nozzle (4) is connected to a ball The ball seat (5) is connected to the six-hole oil unloading groove (7), a steel ball (6) is arranged in the ball seat (5), the steel ball (6) is connected to one end of a spring (8), the other end of the spring (8) is connected to one end of a pressure adjustment rod (9), the other end of the pressure adjustment rod (9) is provided with a pressure adjustment hand wheel (10), a clamp head (12) is installed at the bottom of the water-mixed heating sleeve (2), a pressure gauge (3) is arranged on the water-mixed heating sleeve (2), and a thermometer jack (11) is arranged on the water-mixed heating sleeve (2) near the clamp head (12).

2. The nozzle sleeve according to claim 1, characterized in that: The connection mode of the nozzle sleeve in the oil production system is as follows: the nozzle sleeve clamp head (12) is the nozzle sleeve outlet (14), the nozzle sleeve outlet (14) is connected to a thick high-pressure hose (15) as an oil return pipeline, the oil return pipeline is provided with an oil return valve (16), the nozzle sleeve is also provided with a nozzle sleeve inlet (13), a thin high-pressure hose (17) is connected to the nozzle sleeve inlet (13), the thin high-pressure hose (17) is connected to a water mixing heating valve (18) on a water mixing pipeline, a single well liquid mixing valve (19) is also provided on the water mixing pipeline, the water mixing pipeline and the oil return pipeline are connected by a branch, an oil well connecting valve (20) is provided on the branch, and the nozzle sleeve inlet (13) is connected to a wellhead production valve (21) on a production wellhead.

3. The nozzle sleeve according to claim 1, characterized in that: The specification of the steel ball (6) is φ45mm.

4. The nozzle sleeve according to claim 1, characterized in that: The oil nozzle (4) is a five-speed adjustable oil nozzle, and the diameters thereof are 3 mm, 5 mm, 8 mm, 12 mm and 40 mm respectively.

5. The nozzle sleeve according to claim 4, characterized in that: The five-speed adjustable oil nozzle (4) is adjusted using a wrench or a pipe clamp.

6. The nozzle sleeve according to claim 2, characterized in that: The diameter of the thick high-pressure hose (15) is 2 inches.

7. The nozzle sleeve according to claim 2, characterized in that: The diameter of the thin high-pressure hose (17) is 1 inch.

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