Blowout prevention early warning type adjustable oil nozzle sleeve

Abstract

The invention discloses a blowout prevention early warning type adjustable oil nozzle sleeve, and relates to the technical field of underground produced liquid flow control equipment in the petroleum field. The early warning structure comprises an inner pipe connected with an oil outlet pipe of the oil nozzle sleeve body, an outer pipe arranged on the outer side of the inner pipe in a sleeving mode and a pressure measuring device arranged on the outer pipe, a sealed early warning channel is formed between the inner pipe and the outer pipe, and the pressure measuring device is used for measuring the pressure in the early warning channel; according to the oil nozzle sleeve, the early warning structure is additionally arranged at the liquid outlet end of the oil nozzle sleeve body, the pressure measuring device used for measuring the pressure in the early warning channel is arranged on the outer pipe, when the inner pipe leaks through puncturing, the inner condition of the inner pipe can be judged in time according to the numerical value displayed by the pressure measuring device, then the early warning purpose is achieved, response is made in time, and on-site leakage pollution is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of underground produced fluid flow control equipment in the petroleum field, and particularly relates to an anti-blowout early warning type adjustable oil nozzle sleeve. Background Art

[0002] Heavy oil is a kind of heavy petroleum with high viscosity and poor fluidity, which needs to be produced through thermal recovery methods. At present, the most widely used method is steam huff and puff production, which is to inject steam into the oil well, shut down the well, and then release it for production, and then switch to mechanical production after the energy decreases. During the release stage, a fixed nozzle sleeve is usually installed on the nozzle sleeve of the oil well to control the production pressure difference, so that the gas analyzed from the bottom of the well is released into the oil pipe along the casing and gas pipeline to reduce the bottom hole pressure difference of the oil well, and prevent the formation pressure from being released too quickly, causing sand production to block the pipeline and production loss.

[0003] At present, the means used to deal with well conditions prone to puncture and leakage on site are mostly to directly monitor the pressure in the pumping well. However, since it is necessary to set up monitoring points underground and require a lot of manpower for real-time observation, it is not only inconvenient to operate, but also the cost of both monitoring equipment and manpower is relatively high.

[0004] In order to solve the above problems, the present invention provides a blowout prevention early warning type adjustable oil nozzle sleeve to solve the problem that timely early warning cannot be provided for puncture and leakage wells in the past. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a blowout prevention early warning type adjustable oil nozzle sleeve, which achieves the purpose of timely early warning of well pressure by setting an early warning structure, and responds in time to prevent on-site leakage and pollution.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A blowout prevention and early warning adjustable nozzle sleeve comprises a nozzle sleeve body and an early warning structure, wherein the early warning structure comprises an inner tube connected to an oil outlet pipe of the nozzle sleeve body, an outer tube sleeved outside the inner tube, and a pressure measuring device arranged on the outer tube, a sealed early warning channel is formed between the inner tube and the outer tube, and the pressure measuring device is used to measure the pressure in the early warning channel.

[0008] Preferably, the pressure measuring device is a pressure gauge.

[0009] Preferably, a ceramic tube is provided on the inner wall of the inner tube, and the ceramic tube is bonded to the inner wall of the inner tube by gluing.

[0010] Preferably, a limiting step is provided on the inner wall of the inner tube, and one end of the ceramic tube away from the nozzle sleeve body abuts against the limiting step.

[0011] Preferably, the limiting step is welded to the inner wall of the inner tube.

[0012] Preferably, a reinforcing rod is provided on the inner wall of the inner tube, the reinforcing rod is arranged along the direction of the inner tube, and the axis of the reinforcing rod intersects the longitudinal axis of the main body at right angles.

[0013] Preferably, the reinforcing rod is made of high-strength alloy.

[0014] Preferably, the ends of the outer tube are respectively sealed and welded to the outer wall of the inner tube.

[0015] Preferably, the pressure measuring device is arranged on a side of the outer tube.

[0016] Preferably, the connection between the pressure measuring device and the early warning channel is seal-welded.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The present invention adds an early warning structure to the liquid outlet end of the nozzle sleeve body, and arranges a pressure measuring device on the outer tube for measuring the pressure in the early warning channel. When the inner tube is punctured and leaks, the internal situation of the inner tube can be judged in time through the value displayed by the pressure measuring device, thereby achieving the purpose of early warning and making a timely response to prevent on-site leakage and pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Attached Figure 1 This is a schematic diagram of the structure of a ceramic tube installed in the nozzle sleeve of the present invention;

[0021] Attached Figure 2 It is a side view of a ceramic tube installed in the oil nozzle sleeve of the present invention;

[0022] Attached Figure 3 This is a schematic diagram of the structure of the nozzle sleeve of the present invention with a reinforcing rod;

[0023] Attached Figure 4 It is a side view of a reinforcing rod provided in the nozzle sleeve of the present invention;

[0024] Among them, 1. The main body of the nozzle sleeve; 2. The outer tube; 3. The inner tube; 4. The ceramic tube; 5. The connection port between the pressure measuring device and the inner tube; 6. The pressure gauge; 7. The reinforcing rod; 8. The sealing warning channel; 9. The limit step. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In order to solve the above problems, the present invention provides a blowout prevention early warning type adjustable oil nozzle sleeve, which achieves the purpose of early warning by setting an early warning structure and responds in time to prevent on-site leakage and pollution.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] refer to Figures 1 to 4 , a blowout prevention warning type adjustable oil nozzle sleeve, comprising an oil nozzle sleeve body 1 and an early warning structure, the early warning structure comprising an inner tube 3 connected to the oil outlet pipe of the oil nozzle sleeve body 1, an outer tube 2 sleeved on the outside of the inner tube 3 and a pressure measuring device arranged on the outer tube 2, a sealed early warning channel 8 is formed between the inner tube 2 and the outer tube 3, and the pressure measuring device is used to measure the pressure in the early warning channel 8; the present invention adds an early warning structure to the liquid outlet end of the oil nozzle sleeve body 1, and arranges a pressure measuring device for measuring the pressure in the early warning channel 8 on the outer tube. When the inner tube 3 leaks, the internal situation of the inner tube 3 can be judged in time through the value displayed by the pressure measuring device, thereby achieving the purpose of early warning, and responding in time to prevent leakage and pollution on site; further, the inner tube 3 and the oil outlet pipe can be directly welded, or they can be connected through a connecting joint, and the connecting joint can be a threaded setting and threadedly connected to the inner tube, or it can be a non-threaded setting and welded to the inner tube; in addition, each threaded connection or welding part must ensure a sealing setting.

[0029] refer to Figure 2 or Figure 4 , the pressure measuring device is a pressure gauge 6.

[0030] refer to Figure 1 A ceramic tube 4 is arranged on the inner wall of the inner tube 3. The purpose of arranging the ceramic tube 4 is that the ceramic tube 4 has the characteristics of erosion and corrosion resistance, which can extend the service life of the inner tube 3 and the overall oil sleeve nozzle. In addition, the ceramic tube 4 and the inner wall of the inner tube 3 are glued, and the selected glue is a strong adhesive to ensure the bonding strength between the ceramic tube 4 and the inner tube 3.

[0031] refer to Figure 1A limiting step 9 is provided on the inner wall of the inner tube 3, and one end of the ceramic tube 4 away from the nozzle sleeve body 1 abuts against the limiting step 9, wherein the limiting step 9 is an annular structure welded on the inner wall of the inner tube 3, and the height of the limiting step 9 is greater than the thickness of the ceramic tube 4 to prevent the ceramic tube 4 from moving and the limiting step 9 cannot effectively block and limit the ceramic tube 4.

[0032] refer to Figure 4 A reinforcing rod 7 is provided on the inner wall of the inner tube 3. The diameter of the reinforcing rod 7 is not greater than one-third of the inner diameter of the inner tube 3. The purpose is to ensure the smooth flow of oil in the inner tube 3. In addition, the reinforcing rod 7 is arranged along the direction of the inner tube 3 and the axis of the reinforcing rod 7 intersects perpendicularly with the longitudinal axis of the main body, thereby ensuring the compression and deformation resistance of the inner tube 3.

[0033] Furthermore, the reinforcing rod 7 may be made of a high-strength alloy, the purpose of which is also to enhance the deformation resistance of the inner tube.

[0034] Furthermore, the ends of the outer tube 2 are respectively sealed and welded to the outer wall of the inner tube 3, and the weld is fully welded around the entire outer tube and the inner tube, thereby ensuring the sealing of the warning channel 8, so that the pressure gauge 6 can accurately measure the pressure in the warning channel 8.

[0035] refer to Figure 2 or Figure 4 , the pressure measuring device is arranged on the side of the outer tube 2.

[0036] Furthermore, the pressure measuring device and the early warning channel 8 are connected to the inner tube connecting port 5 through the pressure measuring device, and the connection is sealed and welded.

[0037] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0038] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A blowout prevention warning type adjustable oil nozzle sleeve, characterized in that: It includes a nozzle sleeve body and an early warning structure, wherein the early warning structure includes an inner tube connected to the oil outlet pipe of the nozzle sleeve body, an outer tube sleeved on the outside of the inner tube, and a pressure measuring device arranged on the outer tube, a sealed early warning channel is formed between the inner tube and the outer tube, and the pressure measuring device is used to measure the pressure in the early warning channel.

2. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: The pressure measuring device is a pressure gauge.

3. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: A ceramic tube is arranged on the inner wall of the inner tube, and the ceramic tube is bonded to the inner wall of the inner tube by gluing.

4. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 3 is characterized in that: A limiting step is arranged on the inner wall of the inner tube, and one end of the ceramic tube away from the nozzle sleeve body abuts against the limiting step.

5. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 4 is characterized in that: The limiting step is welded to the inner wall of the inner tube.

6. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: A reinforcing rod is arranged on the inner wall of the inner tube, and the reinforcing rod is arranged along the direction of the inner tube. The axis of the reinforcing rod intersects the longitudinal axis of the main body at right angles.

7. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 6 is characterized in that: The reinforcing rod is made of high-strength alloy.

8. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: The ends of the outer tube are respectively sealed and welded to the outer wall of the inner tube.

9. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: The pressure measuring device is arranged on the side of the outer tube.

10. The anti-blowout warning type adjustable oil nozzle sleeve according to claim 1 is characterized in that: The connection point between the pressure measuring device and the early warning channel is sealed and welded.

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