Oil nozzle sleeve wax removal device and method

Abstract

The invention belongs to the technical field of oil exploitation, and particularly provides an oil nozzle sleeve wax removing device and method.The oil nozzle sleeve wax removing device comprises a gun head, a lead screw, a connecting rod, a crank, a gear set, a rotating handle, a connecting fixing plate and a fixed positioning sleeve, the right end of the connecting rod is connected with the left end of the lead screw, the right end of the lead screw is connected with the gun head, and the lead screw is sleeved with the fixed positioning sleeve; the other end of the crank, the left portion of the connecting fixing plate and the gear set are sequentially connected from back to front, the rotating handle is connected with the gear set, and the right end of the connecting fixing plate is connected with the fixing positioning sleeve. The problems that in the paraffin removal operation process of an oil nozzle sleeve on an existing oil extraction site, a paraffin block structure of the oil nozzle sleeve is difficult to damage through a screwdriver or a crow bar or other tools, paraffin extraction is difficult, time-consuming and labor-consuming, and oil well production is affected are solved. Single-well wax removal operation can be achieved by one person without a power source, the labor intensity is reduced, the working efficiency is high, and the operation cost is saved.

Description

Technical Field

[0001] This invention belongs to the field of petroleum extraction technology, specifically relating to a dewaxing device and method for oil nozzle sleeves. Background Technology

[0002] During oil extraction, the wax present in oil reservoirs is in a liquid state. However, as development progresses, the temperature and pressure within the reservoir decrease, causing the wax in the crude oil to continuously crystallize and deposit, clogging oil extraction equipment and pipelines. This is especially true during the spring and autumn seasons, which are peak periods for wax return from oil wells, directly impacting on-site operations and production. Wax blockage of oil nozzles is a frequent occurrence, posing significant difficulties for on-site inspection and replacement. On-site dewaxing of oil nozzles typically involves using tools such as screwdrivers or pry bars, which is not only time-consuming and labor-intensive but also requires the assistance of 2-3 people. There is a certain risk of impact during operation, as well as some degree of safety and environmental hazards.

[0003] Chinese patent document CN116927720A discloses an energy-saving oil extraction and dewaxing device, comprising: a hollow box with an open top, with support components symmetrically arranged on both sides of the box along the length direction for supporting oil pipes; a first brushing mechanism for brushing the outer wall of the oil pipe on both sides of the box along the length direction; a sealing mechanism for sealing the end of the oil pipe on both sides of the box along the length direction, and a filling component on one side of the box and a second brushing mechanism for cleaning the inner wall of the oil pipe on the other side; this document reduces the labor intensity of the operator and improves the cleaning efficiency of the oil pipe by automatically flushing the inner and outer walls of the oil pipe.

[0004] Chinese patent document CN111250490A discloses a descaling and dewaxing device for oilfield equipment, including a base plate. Two sets of parallel supports are vertically fixed to the top center of the base plate. Each set of supports has a horizontally perforated worm gear in its center, through which a worm gear meshes. A motor is horizontally fixed to the left at the top center of the base plate, and a turbine meshing with the worm gear is fixedly connected to the left end of the motor. By having horizontally perforated worm gears in the center of the two sets of supports, with worm gears meshing through them, and a turbine fixedly connected to the left end of the motor, a storage cylinder is fixedly connected to the left end of the worm gear. A cleaning funnel is covered on the left side of the storage cylinder, facilitating automated cleaning of dirt in oil pipelines by driving the storage cylinder and cleaning funnel. The cleaning funnel effectively prevents dirt from flowing back into the storage cylinder, affecting the cleaning effect. This device is practical and suitable for widespread application. This document requires a power source to operate. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems in the prior art where it is difficult to destroy the wax block structure of the oil nozzle sleeve and remove the wax during the oil nozzle sleeve dewaxing operation at the oil production site using tools such as screwdrivers or pry bars, which is time-consuming and laborious and affects oil well production.

[0006] Therefore, the present invention provides a dewaxing device for an oil nozzle sleeve, comprising a nozzle head, a lead screw, a connecting rod, a crank, a gear set, a rotary handle, a connecting fixing plate, and a fixing positioning sleeve. The right end of the connecting rod is connected to the left end of the lead screw, the right end of the lead screw is connected to the nozzle head, the fixing positioning sleeve is fitted over the lead screw, the left end of the connecting rod is connected to one end of the crank, the other end of the crank, the left part of the connecting fixing plate, and the gear set are connected sequentially from back to front, the rotary handle is connected to the gear set, and the right end of the connecting fixing plate is connected to the fixing positioning sleeve. Preferably, the gun head is a U-shaped four-bladed gun head.

[0007] Preferably, the lead screw is a trapezoidal lead screw.

[0008] Preferably, the connecting rod is connected to the lead screw via a universal ball bearing.

[0009] Preferably, the connecting rod is connected to the crank via a spherical bearing.

[0010] Preferably, the gear set is a two-shaft, single-stage cylindrical gear set, which includes a driving gear and a driven gear, with the driving gear meshing with the driven gear.

[0011] Preferably, the drive wheel and the rotating handle are connected by a keyway.

[0012] Preferably, a driven shaft is provided at the center of the driven wheel, the driven shaft passes through the fixed plate and the crank in sequence, and a cylindrical roller bearing is provided between the driven shaft and the crank.

[0013] Preferably, the outer wall of the right end of the fixing and positioning sleeve is threaded.

[0014] Preferably, a method for dewaxing an oil nozzle sleeve includes the following steps: During dewaxing, a fixed positioning sleeve is connected to the oil nozzle sleeve of the oil well, and a rotating handle is rotated. The rotating handle drives the gear set to rotate, the gear set drives the crank to rotate, the crank drives the connecting rod to rotate, and the connecting rod drives the lead screw to reciprocate. Under the thread cutting action of the fixed positioning sleeve, the lead screw rotates during reciprocating motion, and the lead screw drives the nozzle head to reciprocate, thus completing the dewaxing operation.

[0015] The beneficial effects of this invention are: 1. The oil nozzle sleeve dewaxing device and method provided by this invention includes a nozzle head, a lead screw, a connecting rod, a crank, a gear set, a rotary handle, a connecting fixing plate, and a fixed positioning sleeve. The fixed positioning sleeve is connected to the oil nozzle sleeve of the oil well for stable use of the tool. The connecting fixing plate securely connects the crank-connecting rod mechanism (lead screw, connecting rod, crank) and the fixed positioning sleeve. A gear set and a rotary handle are added to the connecting fixing plate to form a power reversing mechanism, providing power to the oil nozzle sleeve dewaxing device. Through the labor-saving function of the rotary handle and the gear set, the dewaxing operation is completed by using the crank-connecting rod mechanism and the nozzle head, meeting the needs of on-site dewaxing operations. No power supply is required, and it can be operated by a single person.

[0016] 2. The oil nozzle sleeve dewaxing device provided by the present invention improves the dewaxing effect by adopting a U-shaped four-bladed nozzle.

[0017] 3. The oil nozzle sleeve dewaxing device provided by the present invention has a wax discharge port at the bottom of the fixed positioning sleeve, which facilitates the discharge of paraffin wax after the tool dewaxing. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the dewaxing device for the oil nozzle sleeve.

[0020] Explanation of reference numerals in the attached drawings: 1. Gun head; 2.1. Lead screw; 2.2. Connecting rod; 2.3. Crank; 3.1. Gear set; 3.11. Driving wheel; 3.12. Driven wheel; 3.2. Rotating handle; 4.1. Connecting fixing plate; 4.2. Fixing and positioning sleeve; 4.21. Rotating rod. Detailed Implementation

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0022] Example 1: like Figure 1 As shown, an oil nozzle dewaxing device includes a nozzle head 1, a lead screw 2.1, a connecting rod 2.2, a crank 2.3, a gear set 3.1, a rotary handle 3.2, a connecting fixing plate 4.1, and a fixing positioning sleeve 4.2. The right end of the connecting rod 2.2 is connected to the left end of the lead screw 2.1, and the right end of the lead screw 2.1 is connected to the nozzle head 1. The fixing positioning sleeve 4.2 is fitted over the lead screw 2.1. The left end of the connecting rod 2.2 is connected to one end of the crank 2.3. The other end of the crank 2.3, the left part of the connecting fixing plate 4.1, and the gear set 3.1 are connected sequentially from back to front. The rotary handle 3.2 is connected to the gear set 3.1, and the right end of the connecting fixing plate 4.1 is connected to the fixing positioning sleeve 4.2.

[0023] Specifically, during use, the fixed positioning sleeve 4.2 is connected to the oil nozzle sleeve of the oil well for stable tool use; the crank connecting rod mechanism (lead screw 2.1, connecting rod 2.2, crank 2.3) and the fixed positioning sleeve are securely connected by the connecting fixing plate 4.1, and a gear set 3.1 and a rotating handle 3.2 are added to the connecting fixing plate 4.1 to form a power reversing mechanism to provide power to the oil nozzle sleeve dewax remover. Through the labor-saving function of rotating handle 3.2 and gear set 3.1, the dewaxing operation is completed by using the crank sliding rod mechanism and the nozzle head 1, which meets the needs of on-site dewaxing operation. No power supply is required and it can be operated by a single person.

[0024] Example 2: Based on Embodiment 1, the gun head 1 is a U-shaped four-bladed gun head.

[0025] Specifically, drilling with a U-shaped four-bladed drill head is highly efficient and produces excellent results.

[0026] Preferably, the lead screw 2.1 is a trapezoidal lead screw.

[0027] Specifically, the use of a trapezoidal lead screw facilitates the operation of the fixed positioning sleeve 4.2.

[0028] Preferably, the lead screw 2.1 is threadedly connected to the gun head 1.

[0029] Specifically, the threaded connection is a detachable connection, which facilitates installation and disassembly.

[0030] Preferably, the connecting rod 2.2 is connected to the lead screw 2.1 via a universal ball bearing.

[0031] Specifically, connecting rod 2.2 is connected to one end of the trapezoidal lead screw via a universal ball bearing, which facilitates the reciprocating motion of the trapezoidal lead screw.

[0032] Preferably, the connecting rod 2.2 is connected to the crank 2.3 via a spherical bearing.

[0033] Specifically, this structure facilitates the connection of the connecting rod 2.2 to the crank 2.3 via a spherical bearing, and allows the connecting rod 2.2 to rotate with the crank 2.3.

[0034] Preferably, the gear set 3.1 is a two-shaft single-stage cylindrical gear set, which includes a driving gear 3.11 and a driven gear 3.12, with the driving gear 3.11 meshing with the driven gear 3.12.

[0035] Specifically, the driven wheel 3.12 is rotated by the driving wheel 3.11, which is simple in structure and saves time and effort.

[0036] Preferably, the drive wheel 3.11 is connected to the rotating handle 3.2 via a flat key shaft.

[0037] Specifically, the drive wheel 3.11 is connected to the rotary handle 3.2 via a keyed shaft to transmit power. This structure allows power to be supplied by cranking the rotary handle 3.2 from the side, making it easy to operate and saving manpower. The rotary handle 3.2 includes a keyed shaft, a vertical rod, and a horizontal rod. The vertical rod is vertically positioned, with the horizontal rod connected horizontally to the front of its upper end and the keyed shaft connected horizontally to its rear end. The structure is simple and requires little effort to use.

[0038] Preferably, a driven shaft is provided at the center of the driven wheel 3.12, and the driven shaft passes through the fixed plate 4.1 and the crank 2.3 in sequence. A cylindrical roller bearing is provided between the driven shaft and the crank 2.3.

[0039] Specifically, the power transmitted by the gear set 3.1 facilitates the rotation of the crank 2.3.

[0040] Preferably, the outer wall of the right end of the fixed positioning sleeve 4.2 is threaded.

[0041] Specifically, the threaded connection facilitates the fixing of the tool to the nozzle sleeve. The threaded connection is a detachable connection, with a simple structure and convenient installation and disassembly.

[0042] Preferably, the bottom of the fixed positioning sleeve 4.2 is provided with a wax discharge port.

[0043] Specifically, a wax discharge port is provided at the bottom of the fixed positioning sleeve 4.2 to facilitate the discharge of paraffin wax after the tool has removed the wax.

[0044] Preferably, the wax discharge port is square.

[0045] Specifically, the square opening structure is simple, and the shape and number of wax discharge openings can be set according to the actual situation to meet the usage requirements.

[0046] Preferably, the fixed positioning sleeve 4.2 has an M25 coarse thread inside.

[0047] Specifically, the lead screw 2.1 engages with the M25 coarse thread inside the fixed positioning sleeve 4.2, which facilitates the rotational motion of the lead screw 2.1 during reciprocating motion, thereby generating rotational force in the gun head 1.

[0048] Specifically, the outer wall of the fixed positioning sleeve 4.2 is provided with two rotating rods 3.21, which are symmetrically arranged front and rear. This facilitates the connection of the oil nozzle sleeve.

[0049] Example 3: Based on Example 2, a method for dewaxing an oil nozzle sleeve includes the following steps: During dewaxing, a fixed positioning sleeve 4.2 is connected to the oil nozzle sleeve of the oil well. The rotating handle 3.2 is rotated, which drives the gear set 3.1 to rotate. The gear set 3.1 drives the crank 2.3 to rotate, which drives the connecting rod 2.2 to rotate. The connecting rod 2.2 drives the lead screw 2.1 to reciprocate. Under the thread cutting action of the fixed positioning sleeve 4.2, the lead screw 2.1 rotates during reciprocating motion. The lead screw 2.1 drives the nozzle head 1 to reciprocate, thus completing the dewaxing operation.

[0050] Specifically, the nozzle 1 is inserted to the outside of the nozzle. A person stands to the side and cranks the rotating handle 3.2 to provide power. The rotating handle 3.2 drives the driving wheel 3.11 to rotate, which in turn drives the driven wheel 3.12 to rotate in the opposite direction. The driven wheel 3.12 drives the crank 2.3 to rotate via the driven shaft. The crank 2.3 drives the connecting rod 2.2 to rotate via the spherical bearing. The connecting rod 2.2 drives the lead screw 2.1 to reciprocate. Since the lead screw 2.1 is engaged with the thread inside the fixed positioning sleeve 4.2, the lead screw 2.1 rotates during its reciprocating motion. The lead screw 2.1 drives the nozzle 1 to rotate. Through the rotational force, the nozzle 1 breaks the wax structure inside the nozzle sleeve. During the reciprocating rotation, the wax is discharged through the wax discharge port of the fixed positioning sleeve 4.2, completing the dewaxing operation and meeting the needs of on-site dewaxing operations.

[0051] This invention features a simple structure, requires no power supply, and enables single-person dewaxing operations on a single well, reducing labor intensity and saving operating costs. The dewaxing time for a single well nozzle is reduced from 66 minutes per well to 30 minutes per well, improving work efficiency. It avoids the risks of traditional manual dewaxing operations, resulting in zero on-site safety and environmental accidents.

[0052] In the description of this invention, it should be understood that if terms such as "left," "inner," or "right" indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention.

[0053] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A dewaxing device for an oil nozzle sleeve, characterized in that: It includes a gun head (1), a lead screw (2.1), a connecting rod (2.2), a crank (2.3), a gear set (3.1), a rotary handle (3.2), a connecting fixing plate (4.1), and a fixed positioning sleeve (4.2). The right end of the connecting rod (2.2) is connected to the left end of the lead screw (2.1), the right end of the lead screw (2.1) is connected to the gun head (1), the fixed positioning sleeve (4.2) is sleeved on the lead screw (2.1), the left end of the connecting rod (2.2) is connected to one end of the crank (2.3), the other end of the crank (2.3), the left part of the connecting fixing plate (4.1) and the gear set (3.1) are connected sequentially from back to front. The rotary handle (3.2) is connected to the gear set (3.1), and the right end of the connecting fixing plate (4.1) is connected to the fixed positioning sleeve (4.2).

2. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The gun head (1) is a U-shaped four-bladed gun head.

3. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The lead screw (2.1) is a trapezoidal lead screw.

4. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The connecting rod (2.2) is connected to the lead screw (2.1) via a universal ball bearing.

5. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The connecting rod (2.2) is connected to the crank (2.3) via a spherical bearing.

6. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The gear set (3.1) is a two-shaft single-stage cylindrical gear set, which includes a driving gear (3.11) and a driven gear (3.12). The driving gear (3.11) meshes with the driven gear (3.12).

7. The dewaxing device for the nozzle sleeve as described in claim 6, characterized in that: The drive wheel (3.11) and the rotating handle (3.2) are connected by a keyway.

8. The dewaxing device for the nozzle sleeve as described in claim 6, characterized in that: A driven shaft is provided at the center of the driven wheel (3.12), and the driven shaft passes through the fixed plate (4.1) and the crank (2.3) in sequence. A cylindrical roller bearing is provided between the driven shaft and the crank (2.3).

9. The dewaxing device for the nozzle sleeve as described in claim 1, characterized in that: The outer wall of the right end of the fixed positioning sleeve (4.2) is threaded.

10. A method for removing wax from an oil nozzle sleeve, characterized in that: The process includes the following steps: During dewaxing, the fixed positioning sleeve (4.2) is connected to the oil nozzle sleeve of the oil well. The rotating handle (3.2) is rotated, which drives the gear set (3.1) to rotate. The gear set (3.1) drives the crank (2.3) to rotate. The crank (2.3) drives the connecting rod (2.2) to rotate. The connecting rod (2.2) drives the lead screw (2.1) to reciprocate. Under the thread cutting action of the fixed positioning sleeve (4.2), the lead screw (2.1) rotates during reciprocating motion. The lead screw (2.1) drives the gun head (1) to reciprocate and rotate, thus completing the dewaxing operation.

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