CN113319075A - Scale and paraffin removal device and method for oilfield pipeline - Google Patents
Scale and paraffin removal device and method for oilfield pipeline Download PDFInfo
- Publication number
- CN113319075A CN113319075A CN202110708678.5A CN202110708678A CN113319075A CN 113319075 A CN113319075 A CN 113319075A CN 202110708678 A CN202110708678 A CN 202110708678A CN 113319075 A CN113319075 A CN 113319075A
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- Prior art keywords
- drill bit
- pipeline
- motor
- scale
- ultrasonic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/047—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices having internal motors, e.g. turbines for powering cleaning tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
- B08B7/0071—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a descaling and paraffin removal device and method for an oil field pipeline, the device comprises a drill bit, a heating device is arranged in the drill bit, the drill bit is flexibly connected with an electric device, the electric device is flexibly connected with an ultrasonic transmitting device, the ultrasonic transmitting device is connected with a rigid coil, the rigid coil is wound on a winding disc, the electric device is controlled by a power supply, the ultrasonic generating device controls the ultrasonic transmitting device, the electric device comprises a motor and a motor protective sleeve arranged outside the motor, one end of the motor protective sleeve is provided with a flexible connecting sealing device, the other end of the motor protective sleeve is provided with a flexible connecting device, the flexible connecting device is used for connecting a connecting rod and the motor protective sleeve, the connecting rod passes through the ultrasonic transmitting device and then is connected with the rigid coil through a connecting joint, and the ultrasonic transmitting device is fixed on the connecting rod. The pipeline cleaning device is simple in structure, the scale and wax are removed in a heating and ultrasonic mode, the pipeline is less damaged in the pipeline cleaning process, and the cleaning effect is good.
Description
Technical Field
The invention belongs to the technical field of pipeline cleaning, and particularly relates to a scale and wax removing device and method for an oil field pipeline.
Background
The existing oil field pipe paraffin removal technology comprises the following steps: 1) passing through a rubber ball: the influence of temperature is great, the temperature is reduced in winter, the wax precipitation is serious, the trafficability characteristic is low, and the method is only suitable for the condition that the wax precipitation is not serious; 2) hot washing: the cost is high, the operating pressure is high, the temperature is high, and the damage to pipelines, especially reinforced plastic pipelines is serious; 3) high-pressure blockage removal: the method is generally used for severe wax deposition, has high pressure, seriously damages pipelines and even causes the blasting of the pipelines. The existing oilfield pipe scale cleaning technology comprises the following steps: 1) passing through a rubber ball with a blade: the trafficability is low, and the method is only suitable for the conditions with no serious scaling; 2) acid washing: high cost, environmental pollution and serious corrosion to steel pipelines. The scales such as calcium salt, strontium salt, barium salt and the like have high strength, compactness and strong adhesion, and cannot be removed by the existing method.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a device and a method for descaling and paraffin removal for an oilfield pipeline.
In order to achieve the purpose, the following technical scheme is provided:
the utility model provides an oil field pipeline is with wax removal paraffin removal device, includes the drill bit, the inside heating device that is equipped with of drill bit, drill bit and electric installation flexonics, electric installation and ultrasonic emission device flexonics, ultrasonic emission device and rigidity coil pipe are connected, rigidity coil pipe winding is on the winding dish, by power control electric installation, ultrasonic wave generating device control ultrasonic emission device.
Further, the electric installation includes the motor and locates the outside motor protective sheath of motor, the one end of motor protective sheath is equipped with flexonics sealing device, the drill bit passes through flexonics sealing device and motor protective sheath flexonics, the other end of motor protective sheath is equipped with the flexonics device, the flexonics device is used for connecting rod and motor protective sheath, the connecting rod passes behind the ultrasonic emission device and is connected with the rigid coil pipe through attach fitting, ultrasonic emission device fixes on the connecting rod, the setting of flexonics device makes this device can be used to the cleanness of return bend.
Further, the power supply and the ultrasonic wave generating device are respectively connected with a power line and a heating device through a contact type electric brush and a contact type connector, and the power line sequentially penetrates through the rigid coil, the connecting rod and the motor protecting sleeve to be respectively connected with the motor and the heating device; the connecting line passes through the rigid coil pipe and the connecting rod in sequence and is connected with the ultrasonic transmitting device.
Furthermore, the flexible connection sealing device comprises a flexible connection device and sealing rubber arranged outside, a pressure sensor is arranged in the flexible connection sealing device, and the pressure sensor is used for detecting pressure brought by the drill bit.
Further, the outer diameter of the drill bit is smaller than the drift diameter of the pipeline to be cleaned by 3-5 mm.
Furthermore, the contact electric brush and the contact connector are arranged at one end of the winding disc, the other end of the winding disc is provided with a rotating motor, and the winding disc is coiled on the support frame.
Further, motor protective sheath and ultrasonic wave emitter be the cylinder type, the cross section diameter is less than drill bit cross section diameter, guarantees that this device is more smooth and easy when crossing the return bend.
Furthermore, fixing devices are arranged at the front end and the tail end of the rigid coil pipe on the winding disc and used for fixing a power line and a connecting line.
A method for cleaning scale and wax for oilfield pipelines comprises the following steps:
1) placing a drill bit at the end part of a pipeline to be cleaned, and heating the drill bit to a set temperature by electrifying;
2) turning on an ultrasonic generating device, transmitting ultrasonic waves by an ultrasonic transmitting device, rotating a rotating motor to drive a winding disc to rotate, pushing a drill bit to advance along the interior of a pipeline by a rigid coil pipe, melting wax by the drill bit, and emulsifying the melted wax by the ultrasonic waves to ensure that the melted wax is not solidified any more in a short time to block the pipeline;
3) in the process of cleaning scale, the pressure sensor detects the pressure at the drill bit, when the induction pressure is greater than a set value, the motor drives the drill bit to rotate to clean the scale in the pipeline, the induction pressure of the pressure sensor is reduced along with the gradual cleaning of the scale, when the induction pressure is reduced to be below a set pressure value, the drill bit stops working, and meanwhile, the ultrasonic transmitting device can further crush the scale cleaned by the drill bit to prevent the scale from blocking the pipeline; because the outer diameter of the drill bit is smaller than that of the pipeline for passing through the channels, part of dirt which is not removed between the drill bit and the pipeline is further removed and crushed under the action of ultrasonic waves;
4) when the rigid coil pipe on the winding disc is used up and the pipeline is not cleaned, the other rigid coil pipe is connected through the joint;
5) in the scale cleaning process, the scale cleaning device breaks down and cannot continue to work, the rotating motor is arranged to rotate reversely, and the scale cleaning device is taken out for maintenance by driving the winding disc and then coiling the rigid coil pipe.
Furthermore, the heating set temperature of the drill bit is 5-10 ℃ higher than the melting point of wax but lower than the melting temperature of the pipeline core tube matrix, and the heating set temperature of the drill bit is reduced relative to the heating set temperature of a pure drill bit due to the simultaneous operation and cleaning of the ultrasonic device and the heating device.
Further, the motor can be controlled through the pressure sensor, when the axial pressure sensed by the pressure sensor is greater than 60N, the motor starts to work to drive the drill bit to rotate so as to crush dirt in the pipeline, and when the axial pressure is smaller, the drill bit can directly pass through the pipeline.
After the pipeline is cleaned, a winding disc and a support frame can be arranged at the tail end of the pipeline to collect the rigid coil pipe.
The outer diameter of the drill bit, the outer diameter of the motor protective sleeve and the outer diameter of the ultrasonic transmitting device are smaller than the inner diameter of the pipeline, so that the drill bit can be prevented from damaging the inner wall of the pipeline.
The length that the rigid coil pipe can be once coiled to the winding dish is 2000m ~3000m, and the mode that can connect newly connects rigid coil pipe through continuing.
The invention has the beneficial effects that:
according to the invention, the scale is removed and the paraffin is removed simultaneously by heating the drill bit and ultrasonic waves, on the basis of primary scale removal of the drill bit, the ultrasonic waves further remove the scale, the pipeline is not damaged, a better cleaning effect is achieved, and meanwhile, the device is suitable for elbow cleaning operation and has wide applicability.
Drawings
FIG. 1 is a cross-sectional view of the apparatus of the present invention;
FIG. 2 is an enlarged view at detail A;
FIG. 3 is an enlarged view at detail B;
FIG. 4 is a schematic perspective view of the present invention;
fig. 5 is a schematic view of the connection between the rigid coil and the rigid coil according to the present invention.
In the figure: 1. a drill bit; 2. a heating device; 3. a motor; 4. a flexible connection sealing device; 5. a motor protective sleeve; 6. a flexible connection means; 7. a connecting rod; 8. an ultrasonic wave emitting device; 9. connecting a joint; 10. a rigid coil; 11. a winding disc; 12. a support frame; 13. a contact brush; 14. a contact connector; 15. a power source; 16. an ultrasonic wave generating device; 17. a connecting wire; 18. a power line; 19. a fixing device; 20. a joint; 21. sealing rubber; 22. a rotating electric machine.
Detailed Description
The invention will be further described with reference to the drawings attached to the description, but the scope of the invention is not limited thereto.
As shown in fig. 1 to 4, a descaling and paraffin removal device for oilfield pipelines comprises a drill bit 1, a heating device 2, a motor 3, an ultrasonic transmitter 8, a rigid coil 10, a winding disc 11, a support frame 12, a contact electric brush 13, a contact connector 14, a power supply 15, an ultrasonic generator 16 and a rotating motor 22; the drill bit 1 is of a conical structure, the head is a smooth round head, a heating device 2 is arranged in the drill bit 1, a motor protective sleeve 5 is arranged outside a motor 3, the motor protective sleeve 5 is of a cylindrical shape, the cross sections of the motor protective sleeve 5 and an ultrasonic transmitting device 8 are smaller than the cross section of the drill bit 1, one end of the motor protective sleeve 5 is provided with a flexible connection sealing device 4, the flexible connection sealing device 4 comprises a flexible connection device 6 and sealing rubber 21 arranged outside, a pressure sensor is arranged in the flexible connection sealing device 4, the drill bit 1 is flexibly connected with the motor protective sleeve 5 through the flexible connection sealing device 4, the other end of the flexible connection device 6 is provided with the flexible connection device 6, the flexible connection device 6 is used for connecting the motor protective sleeve 5 and a connecting rod 7, the other end of the connecting rod 7 penetrates through the ultrasonic transmitting device 8 and is connected with a rigid coil 10 through a connecting joint 9, and the rigid coil 10 is wound on a winding disc 11, one end of the winding disc 11 is provided with a contact electric brush 13 and a contact connector 14, the other end is provided with a rotating motor 22, the winding disc 11 is erected on the support frame 12, the power supply 15 and the ultrasonic wave generating device 16 are respectively connected with the power line 18 and the connecting line 17 through the contact electric brush 13 and the contact connector 14 in a sweeping brush contact electrifying mode, the power line 18 sequentially penetrates through the rigid coil pipe 10, the connecting rod 7 and the motor protective sleeve 5 to be respectively connected with the motor 3 and the heating device 2, the power line 18 and the heating device 2 are connected in a sweeping brush contact electrifying mode, under the connecting mode, the motor 3 can drive the drill bit 1 to rotate, meanwhile, the drill bit 1 can be heated, and the heated power line 18 does not rotate; the connecting line 17 passes through the rigid coil 10 and the connecting rod 7 in turn to be connected with the ultrasonic transmitting device 8.
As shown in fig. 5, the front end and the end of the rigid coil 10 on the winding disc 11 are provided with fixing devices 19 for fixing the power cord 18 and the connecting cord 17, and when the rigid coil 10 wound on the winding disc 11 is used up, the connection mode is: another rigid coil 10 is connected by means of gluing with a joint 20.
A method for cleaning scale and wax for oilfield pipelines comprises the following steps: 1) placing the drill bit 1 at the end part of a pipeline to be cleaned, and heating the drill bit 1 to 60 ℃ by electrifying (the melting temperature of wax in the pipeline to be cleaned is 50 ℃, and the melting temperature of the pipeline is 115 ℃); 2) turning on the ultrasonic generating device 16, transmitting ultrasonic waves by the ultrasonic transmitting device 8, rotating the rotating motor 22 to drive the winding disc 11 to rotate, pushing the drill bit 1 to advance along the interior of the pipeline by the rigid coil pipe 10, melting wax by the drill bit 1, and emulsifying the melted wax by the ultrasonic waves to prevent the melted wax from blocking the pipeline; 3) scale cleaning: the pressure sensor detects the pressure at the drill bit 1, when the induction pressure is 65N, the motor 3 drives the drill bit 1 to rotate to clean the dirt in the pipeline, the induction pressure of the pressure sensor is reduced along with the gradual cleaning of the dirt, when the induction pressure is less than 65, the drill bit 1 stops working, and meanwhile, the ultrasonic transmitting device 8 can further crush the dirt cleaned by the drill bit 1 to prevent the dirt from blocking the pipeline; 4) The rigid coil pipe 10 on the winding disc 11 is used up and the pipeline is not cleaned completely, and is connected with another rigid coil pipe 10 through a joint 20; after wax and scale removal is finished, crushed impurities in the pipeline can be easily taken out of the pipeline under the pushing of the conveying fluid.
Claims (10)
1. The utility model provides an oil field pipeline is with wax removal device, includes drill bit (1), its characterized in that, drill bit (1) inside be equipped with heating device (2), drill bit (1) and electric installation flexonics, electric installation and ultrasonic emission device (8) flexonics, ultrasonic emission device (8) are connected with rigidity coil pipe (10), rigidity coil pipe (10) winding is on winding dish (11), by power (15) control electric installation, ultrasonic wave generating device (16) control ultrasonic emission device (8).
2. The oilfield pipeline scale removal and paraffin removal device according to claim 1, wherein the electrical device comprises a motor (3) and a motor protective sleeve (5) arranged outside the motor (3), a flexible connection sealing device (4) is arranged at one end of the motor protective sleeve (5), the drill bit (1) is flexibly connected with the motor protective sleeve (5) through the flexible connection sealing device (4), a flexible connection device (6) is arranged at the other end of the motor protective sleeve (5), the flexible connection device (6) is used for connecting the connecting rod (7) and the motor protective sleeve (5), the connecting rod (7) is connected with the rigid coil (10) through a connection joint (9) after passing through the ultrasonic transmitting device (8), and the ultrasonic transmitting device (8) is fixed on the connecting rod (7).
3. The oil field pipeline scale and wax removing device as claimed in claim 2, wherein the power supply (15) and the ultrasonic wave generating device (16) are respectively connected with the power line (18) and the connecting line (17) through the contact electric brush (13) and the contact connector (14), the power line (18) sequentially passes through the rigid coil (10), the connecting rod (7) and the motor protecting sleeve (5) to be respectively connected with the motor (3) and the heating device (2); the connecting line (17) passes through the rigid coil (10) and the connecting rod (7) in sequence to be connected with the ultrasonic transmitting device (8).
4. The oilfield pipeline scale and wax removal device according to claim 2, wherein the flexible connection sealing device (4) comprises a flexible connection device (6) and sealing rubber (21) arranged outside, and a pressure sensor is arranged in the flexible connection sealing device (4).
5. A device for removing scale and paraffin from oilfield pipelines according to claim 3, wherein the contact electric brush (13) and the contact connector (14) are arranged at one end of the winding disc (11), the other end of the winding disc (11) is provided with a rotating motor (22), and the winding disc (11) is erected on the supporting frame (12).
6. The oil field pipeline scale and wax removal device as claimed in claim 2, wherein the motor protective sleeve (5) and the ultrasonic transmitter (8) are cylindrical, the diameter of the cross section is smaller than that of the cross section of the drill bit (1), and the outer diameter of the drill bit (1) is smaller than the drift diameter of the pipeline to be cleaned by 3 mm-5 mm.
7. A device for cleaning and dewaxing oilfield pipelines according to claim 3, wherein the rigid coil (10) on the winding disc (11) is provided with fixing devices (19) at the front end and the tail end thereof for fixing the power line (18) and the connecting line (17).
8. The method for descaling and paraffin removal for oilfield pipelines according to claim 7, comprising the following steps:
1) placing the drill bit (1) at the end part of a pipeline to be cleaned, and electrifying to heat the drill bit (1) to a set temperature;
2) the ultrasonic wave generating device (16) is started, the ultrasonic wave emitting device (8) emits ultrasonic waves, the rotating motor (22) rotates to drive the winding disc (11) to rotate, the rigid coil pipe (10) pushes the drill bit (1) to advance along the interior of the pipeline, the drill bit (1) melts wax, and the ultrasonic waves emulsify the melted wax;
3) in the scale cleaning process, the pressure sensor detects the pressure at the drill bit (1), when the induction pressure is greater than a set value, the motor (3) drives the drill bit (1) to rotate to clean scales in a pipeline, the induction pressure of the pressure sensor is reduced along with the gradual cleaning of the scales, when the induction pressure is reduced to be lower than a set pressure value, the drill bit (1) stops working, and meanwhile, the ultrasonic transmitting device (8) can further crush the scales cleaned by the drill bit (1) to prevent the scales from blocking the pipeline;
4) when the rigid coil pipe (10) on the winding disc (11) is used up and the pipeline is not cleaned completely, the other rigid coil pipe (10) is connected through the joint (20);
5) in the process of cleaning the scale, the scale cleaning device breaks down and cannot work continuously, the rotating motor (22) is arranged to rotate reversely, and the scale cleaning device is taken out for maintenance by driving the winding disc (11) and then coiling the rigid coil pipe (10).
9. The method for cleaning the scale and the wax of the oilfield pipeline according to claim 8, wherein the heating set temperature of the drill bit (1) is 5-10 ℃ higher than the melting point of the wax but lower than the melting temperature of the pipeline core pipe matrix.
10. The method for cleaning the scale and the wax of the oilfield pipeline according to the claim 8, wherein the motor (3) is controlled by a pressure sensor, and the motor (3) starts to work when the axial pressure sensed by the pressure sensor is more than 60N.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708678.5A CN113319075A (en) | 2021-06-25 | 2021-06-25 | Scale and paraffin removal device and method for oilfield pipeline |
| PCT/CN2021/103059 WO2022267078A1 (en) | 2021-06-25 | 2021-06-29 | Scale and paraffin removal device and method for oil field pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708678.5A CN113319075A (en) | 2021-06-25 | 2021-06-25 | Scale and paraffin removal device and method for oilfield pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113319075A true CN113319075A (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110708678.5A Pending CN113319075A (en) | 2021-06-25 | 2021-06-25 | Scale and paraffin removal device and method for oilfield pipeline |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113319075A (en) |
| WO (1) | WO2022267078A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295511A (en) * | 2021-12-14 | 2022-04-08 | 临海伟星新型建材有限公司 | Pipeline anti-adhesion performance testing device and operation method thereof |
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2021
- 2021-06-25 CN CN202110708678.5A patent/CN113319075A/en active Pending
- 2021-06-29 WO PCT/CN2021/103059 patent/WO2022267078A1/en active Application Filing
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| CN203035163U (en) * | 2013-02-04 | 2013-07-03 | 董宝玉 | Novel paraffin removal device for flowing well oil pipe |
| US20190240708A1 (en) * | 2016-11-17 | 2019-08-08 | Ilmasonic-Science Limited Liability Company | Combined method for cleaning a tubing string and apparatus for carrying out said method |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022267078A1 (en) | 2022-12-29 |
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