CN108661600B - Control method for smooth passing of tubing coupling through wax scraping device - Google Patents
Control method for smooth passing of tubing coupling through wax scraping device Download PDFInfo
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- CN108661600B CN108661600B CN201810477412.2A CN201810477412A CN108661600B CN 108661600 B CN108661600 B CN 108661600B CN 201810477412 A CN201810477412 A CN 201810477412A CN 108661600 B CN108661600 B CN 108661600B
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- sucker rod
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- scraping sheet
- wax scraping
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- 238000007790 scraping Methods 0.000 title claims abstract description 110
- 230000008878 coupling Effects 0.000 title claims abstract description 34
- 238000010168 coupling process Methods 0.000 title claims abstract description 34
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000001993 wax Substances 0.000 claims abstract description 139
- 239000012188 paraffin wax Substances 0.000 claims abstract description 31
- 230000001174 ascending effect Effects 0.000 claims abstract description 10
- 241000191291 Abies alba Species 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 27
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/08—Wipers; Oil savers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a wax scraper of a wellhead sucker rod. The problem that the wax on the surface of the sucker rod is not scraped cleanly and wastes time and energy in the existing sucker rod wax removal mode is mainly solved. The method is characterized in that: (1) connecting the wax scraper to the Christmas tree; (2) the adjusting spring adjusts the bolt to ensure the sucker rod to be always in the central position of the wax scraper of the sucker rod; (3) the wax scraping sheet is always tightly held by the sucker rod body through the compression spring, when an ascending sucker rod coupling or centralizer pushes the roller to drive the roller carrier to move outwards, the roller carrier drives the wax scraping sheet to move outwards along the groove at the lower part of the wax scraping sheet guide disc, and the wax scraping sheet compresses the spring, so that the sucker rod coupling or centralizer can smoothly pass through the wax scraping sheet; (4) after the sucker rod coupling or centralizer passes through the paraffin scraper, the paraffin scraper returns to continue to hold the sucker rod tightly, and the paraffin scraper closes the inner diameter, so that the oil wax on the sucker rod is smoothly scraped. This well head sucker rod paraffin scraper can scrape the comparatively firm wax oil in sucker rod surface automatically, and is safe laborsaving.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a control method for enabling an oil pipe coupling to smoothly pass through a wax scraping device.
Background
At present, when a sucker rod is lifted in oil field well repairing operation at home and abroad, the following two methods are usually adopted for paraffin removal of the sucker rod, firstly, a steel wire or a belt is wound on the sucker rod for paraffin removal, a sucker rod centralizer cannot pass through the wound belt or the wound steel wire, and oil and paraffin on the sucker rod are not completely scraped, so that the method is laborious and unsafe; secondly, a wax scraper with a rubber core is arranged at a well mouth for scraping wax, when a sucker rod coupling or a centralizer with a larger diameter passes through, the rubber core is seriously extruded, the original elasticity cannot be recovered, the sucker rod cannot be held tightly for scraping wax, and the oil wax on the sucker rod cannot be scraped completely. The two methods can not scrape oil wax on the surface of the sucker rod completely, the boiler car steam is needed to be used for wax removal again, a large amount of oil is consumed, a large amount of dirty oil and sewage is generated, and the workload of staff is greatly increased.
Disclosure of Invention
The invention aims to solve the technical problems that the surface of a sucker rod cannot be thoroughly scraped and time and labor are wasted in the prior wax removal mode of the sucker rod in the background technology, and provides a control method for an oil pipe coupling to smoothly pass through a wax scraping device.
The technical scheme for solving the problems can be as follows: the wax scraper of the wellhead sucker rod comprises a base, a wax scraping sheet guide disc and a positioning disc; the upper part of the positioning disc is connected with 3 hinged supports, and the hinged supports at the upper part of the positioning disc are connected with the lower end of the roller carrier through long shaft pins; the upper end of the roller frame is connected with the wax scraping sheet through a wax scraping sheet pin; the inner side of the middle upper part of each roller frame is connected with a roller through a short shaft pin; the base consists of a fixed mechanism and a movable mechanism; the upper part of the wax scraping sheet guide disc is fixedly connected with an annular guide disc pad through three inner hexagonal screws; the paraffin scraping sheet guide disc is circumferentially provided with 3 opening grooves which are uniformly distributed, each groove is internally provided with a paraffin scraping sheet, and each paraffin scraping sheet is fixedly connected with a fixed spring seat through a bolt; a spring is arranged between the fixed spring seat and the spring gland at one side end; the spring gland is internally connected with a spring adjusting seat through a spring adjusting bolt; the wax scraping sheet guide disc and the positioning disc are connected together through a plurality of stud bolts; the centers of the base, the wax scraping sheet guide disc and the positioning disc are all provided with center holes.
The invention also aims to provide a control method for enabling an oil pipe coupling to smoothly pass through a wax scraping device, which comprises the following steps:
(1) connecting a wellhead sucker rod paraffin scraper to an oil extraction tree through a joint, wherein a sucker rod sequentially penetrates through the joint, a fixed base, a lower disc, a connecting sleeve, a limiting disc, a positioning disc, a roller frame, a roller, a paraffin scraper guide disc and a paraffin scraper guide disc upper pad from bottom to top;
(2) according to the hardness of the oil wax of the sucker rod, the spring adjusting bolt is adjusted to enable the spring to be in a reasonable elastic force range; when the big hook of the operation machine drives the pumping rod elevator, and the pumping rod elevator drives the pumping rod to go up, the alternating load of the big hook makes the pumping rod rock front and back and left and right in the oil pipe of the well head, the pumping rod drives the lower disc to rock front and back and left and right in the range of the limiting disc, and the lower disc drives the connecting sleeve, the positioning disc and all the parts on the positioning disc and the upper part of the positioning disc to rock front and back and left and right along with the pumping rod, so that the pumping rod is always in the central position of;
(3) the wax scraping sheet is always tightly held by the sucker rod body through the elasticity of the compressed spring, when an ascending sucker rod coupling or centralizer approaches to a roller of the roller carrier, the sucker rod coupling or centralizer is pushed to drive the roller carrier to move outwards when ascending, the roller carrier drives the wax scraping sheet arranged on the roller carrier to move outwards along a groove at the lower part of the wax scraping sheet guide disc, the wax scraping sheet compresses the spring, an ascending space of the sucker rod coupling or centralizer is vacated, and the sucker rod coupling or centralizer can smoothly pass through the wax scraping sheet;
(4) when the sucker rod coupling or centralizer passes through the paraffin scraping sheets, the springs push the paraffin scraping sheets to return by elasticity, the sucker rod is held tightly, and the folding inner diameter of the 3 paraffin scraping sheets is consistent with the outer diameter of the sucker rod body, so that the oil wax on the sucker rod is scraped smoothly;
(5) the oil wax scraped off flows out along the gap between two adjacent stud bolts and the gap between the stud bolts and the roller carrier, flows into a recovery tank below a wellhead, and is recovered and treated uniformly through a dirty oil and sewage recovery device.
The working principle of the wax scraper for the wellhead sucker rod is as follows: when the sucker rod is lifted upwards, the joint connected through the base part is connected with a wellhead Christmas tree, wherein the control part, the wax scraping part and the support part are connected together through the bolt, the sucker rod can rotate or swing freely in the horizontal direction of the base along with the sucker rod, the sucker rod is guaranteed to be held tightly by the wax scraping piece all the time, the wax scraping piece scrapes oil wax on the sucker rod along with the lifting of the sucker rod, when a sucker rod coupling and a centralizer are met, the sucker rod column is continuously lifted upwards, the coupling and the centralizer are allowed to go upwards along the roller frame, the wax scraping piece is enabled to move outwards through the action of the roller on the roller frame, the oil wax scraping piece smoothly passes through the sucker rod coupling, the wax scraping piece is rapidly reset under the action of the spring, the sucker rod is continuously held tightly to scrape wax, and the scraped oil wax flows out along gaps.
Compared with the background technology, the invention has the following beneficial effects: the tubing coupling smoothly passes through the control method of the wax scraping device, so that the sucker rod centralizer can smoothly pass through; the wax scraping sheet can hold the sucker rod tightly all the time and scrape the surface oil wax completely; the thick and hard wax scraped in winter can smoothly flow out along the gap between the brackets, and the scraped wax flows into a collecting box below a wellhead operating platform to be intensively treated. Can greatly improve the wax scraping effect and the wax scraping efficiency of the sucker rod, saves labor and time, and is safe and convenient to operate. The wax scraping part and the base part are connected together through the bracket part, so that the weight of the whole-well sucker rod can be borne; the gap between the stud bolts of the bracket is large, so that thick oil wax scraped in winter can smoothly flow out, and the well repair operation can be smoothly carried out.
Drawings
FIG. 1 is a schematic structural view of a wax scraper of a sucker rod at a well mouth of the invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a top view of the well head sucker rod wax scraper of the present invention;
FIG. 4 is a schematic structural diagram of a wax scraper control part of the sucker rod of the wellhead.
In the figure: 1-base, 2-long shaft pin, 3-roller frame, 4-stud bolt, 5-roller, 6-short shaft pin, 7-cylindrical pin, 8-loose joint bolt, 9-wax scraping sheet guide disc, 10-wax scraping sheet, 11-wax scraping sheet pin, 12, 16, 29-nut, 13-fixed spring seat, 14-spring, 15-spring adjusting seat, 17-bolt, 18-spring adjusting bolt, 19-spring gland, 20-guide disc pad, 21-hexagon socket head cap screw, 22-positioning disc, 23-connecting sleeve, 24-limiting disc, 25-lower disc, 26-fixed base, 27-hinged support, 28-base bolt, 30-joint,
the specific implementation mode is as follows:
the invention will be further explained below with reference to the accompanying drawings:
as shown in the attached figures 1, 2, 3 and 4, the wellhead sucker rod wax scraper comprises a base 1, a wax scraping sheet guide disc 9 and a positioning disc 22; the upper part of the positioning disc 22 is connected with 3 hinged supports 27, and the hinged support 27 on the upper part of the positioning disc 22 is connected with the lower end of the roller frame 3 through a long shaft pin 2; the upper end of the roller frame 3 is connected with a wax scraping sheet 10 through a wax scraping sheet pin 11, and the wax scraping sheet is a flat plate type wax scraping sheet; the inner side of the middle upper part of each roller carrier 3 is connected with a roller 5 through a short shaft pin 6; the base 1 consists of a fixed mechanism and a movable mechanism; the fixing mechanism consists of a limiting disc 24 and a fixing base 26, and the limiting disc 24 and the fixing base 26 at the lower part are connected together through bolts; the movable mechanism is formed by welding a positioning disc 22, a connecting sleeve 23 and a lower disc 25 together from top to bottom, the movable mechanism is connected with a space between a fixed base 26 and a limiting disc 24 of the fixed mechanism through the lower disc 25 of the movable mechanism, the lower part of the fixed base 26 is connected with a connector 30, and the connector 30 is connected with a Christmas tree or a tubing hanger; the upper part of the wax scraping sheet guide disc 9 is fixedly connected with an annular guide disc pad 20 through three inner hexagonal screws; the paraffin scraping sheet guide disc 9 is circumferentially provided with 3 opening grooves which are uniformly distributed, each groove is internally provided with a paraffin scraping sheet 10, and each paraffin scraping sheet 10 is fixedly connected with a fixed spring seat 13 through a bolt 17; a spring 14 is arranged between the fixed spring seat 13 and a spring gland 19 at one side end and is used for adjusting the tightness of the wax scraping sheet tightly holding the sucker rod body; the spring gland 19 is internally connected with a spring adjusting seat 15 through a spring adjusting bolt 18, and two sides of the spring gland 19 are connected with one end of a loose joint bolt 8 through a cylindrical pin 7; the other end of the loose joint bolt 8 is connected to the wax scraping sheet guide disc through a screw thread; the wax scraping sheet guide disc 9 and the positioning disc 22 are connected together through 6 stud bolts 4; the centers of the base 1, the wax scraping sheet guide disc 9 and the positioning disc 22 are all provided with central holes; the fixed spring seat 13, the spring 14, the spring adjusting seat 5, the bolt 17, the spring adjusting bolt 18 and the spring gland 19 are used together for fixing the spring.
The wax scraper for wellhead sucker rod has control part comprising mainly positioning mechanism and guide mechanism. The positioning mechanism comprises a positioning disc 22 and a hinged support 27; the guide mechanism comprises a roller frame 3, a roller frame shaft, a roller 5, a roller shaft and the like. Wherein the relative position of each gyro wheel frame is confirmed to the positioning disk, and guiding mechanism guarantees that the centralizer passes through well head sucker rod paraffin scraper smoothly.
The wax scraping part mainly comprises a wax scraping mechanism and a clamping mechanism. The wax scraping mechanism comprises a wax scraping sheet 10, a wax scraping sheet guide disc 9, a guide disc pad 20 and the like; the clamping mechanism mainly comprises a spring 14, a spring seat 13, a spring gland 19, a spring adjusting bolt 18, a spring adjusting seat 15, a loose joint bolt 8, a pin and the like. The paraffin scraper is designed into a flat plate type, the guide disc is in charge of controlling the front and back movement tracks of the paraffin scraper and axially limiting, the clamping mechanism enables the sucker rod to be always clamped tightly, the stable stress of the paraffin scraper is guaranteed, the sucker rod is held tightly, the sucker rod is guaranteed to be located in the center of a wellhead sucker rod paraffin scraper, the paraffin on the sucker rod is scraped more thoroughly, and the guide disc pad is fixed with the guide disc through three hexagon socket head screws. The thickness of a flat plate type wax scraping sheet of the sucker rod with the same diameter (phi 25, phi 22 and phi 19) is required to be 10mm, the whole thickness of a guide disc is reduced to 38mm, the whole height of the wax scraper of the sucker rod at a well mouth is relatively reduced, the operation of well mouth personnel is convenient, the groove of the guide disc is easy to process, the wax scraping sheet is connected with a roller frame of a control part through a short shaft pin and moves back and forth in the groove at the lower part of the guide disc under the action of a spring.
The three-petal type guide mechanism formed by connecting 3 hinged supports 27 on the upper part of the positioning disc 22 with the roller carrier 3 can keep the sucker rod centered all the time and ensure that the centralizer can smoothly pass through the sucker rod wax scraper at the wellhead.
The split type support mainly comprises six stud bolts which are uniformly distributed between the guide disc and the positioning disc. The support is connected together through screw thread, and the effect is the weight of support whole well sucker rod, and the oily wax of scraping flows to the dirty profit recovery box below the well head operation panel along the open water conservancy diversion mouth and the clearance between bolt and the gyro wheel frame. The split type support adopts the stable design of a guide disc arranged in a screw part, can meet the bearing requirement of the whole-well sucker rod with the weight of 4 t-5 t, has six open outlets and large flow guide area, ensures that the oil wax flows out smoothly in winter, and meets the requirement of site construction.
The control method for the oil pipe coupling to smoothly pass through the wax scraping device comprises the following steps:
(1) connecting a wellhead sucker rod wax scraper to a Christmas tree through a connector 30, wherein the sucker rod sequentially passes through the connector 30, a fixed base 26, a lower disc 25, a connecting sleeve 23, a limiting disc 24, a positioning disc 22, a roller frame 3, a roller 5, a wax scraping sheet 10, a wax scraping sheet guide disc 9 and a wax scraping sheet guide disc upper pad 20 from bottom to top;
(2) according to the hardness of the oil wax of the sucker rod, the spring adjusting bolt is adjusted to enable the spring 14 to be in a reasonable elastic force range; when the big hook of the operation machine drives the sucker rod elevator, and the sucker rod elevator drives the sucker rod to go up, the alternating load of the big hook enables the sucker rod to swing front and back and left and right in an oil pipe of a well head, the sucker rod drives the lower disc 25 to swing front and back and left and right in the range of the limiting disc 24, the lower disc 25 drives the connecting sleeve 23, the positioning disc 22 and all parts on the upper part of the positioning disc to swing front and back and left and right along with the sucker rod, the central position of the sucker rod wax scraper is ensured all the time, and the;
(3) at the moment, the wax scraping sheet 10 is always tightly held by the sucker rod body through the elasticity of the compressed spring 14, when an ascending sucker rod coupling or centralizer approaches to the roller 5 of the roller carrier 3, the sucker rod coupling or centralizer pushes the roller 5 to drive the roller carrier 3 to move outwards when ascending, the roller carrier drives the wax scraping sheet arranged on the roller carrier to move outwards along the groove at the lower part of the wax scraping sheet guide disc, the wax scraping sheet compresses the spring 14, and the ascending space of the sucker rod coupling or centralizer is vacated, so that the sucker rod coupling or centralizer can smoothly pass through the wax scraping sheet;
(4) after a sucker rod coupling or centralizer passes through the wax scraping sheets, the spring 14 pushes the wax scraping sheets 10 to return by elasticity, the sucker rod is continuously clasped, and the folded inner diameter of 3 wax scraping sheets (the wax scraping sheets are of phi 25, phi 22 and phi 19 types, and can be selected according to the phi 25, phi 22 and phi 19 outer diameters of the sucker rod body) is consistent with the outer diameter of the sucker rod body, so that the oil wax on the sucker rod is smoothly scraped;
(5) the scraped oil wax flows out along the gap between two adjacent stud bolts 4 and the gap between the stud bolts 4 and the roller frame 3, flows into a recovery tank below a wellhead, and is recovered by a dirty oil and sewage recovery device in a unified way, wherein the stud bolts bear the weight and the impact load of the whole-well sucker rod.
The control method for smoothly passing through the wax scraping device by the tubing coupling can be applied to oil scraping and wax scraping on the outer wall of the tubing; the device can also be applied to the design of a series of devices for scraping oil, wax and mud on the outer wall of a drill rod, the outer wall of a sleeve and the like, and ensuring that the couplings such as an oil pipe, a drill rod, a sleeve and the like smoothly pass through the devices for scraping oil, wax and mud on the outer wall.
In a Daqing oilfield aromatic 130-inclined 8 well, in the application process of the oil pipe wax scraping device, an oil pipe coupling smoothly passes through the wax scraping device, simultaneously, the oil wax on the outer wall of the oil pipe is scraped cleanly, the thickness of the oil wax on the surface of the oil pipe after wax scraping is smaller than 2mm, and the first pass percent of wax scraping is 100%. The well descending standard is achieved, and the effects of safety, labor saving and environmental protection are realized.
Claims (2)
1. A control method for smoothly passing an oil pipe coupling through a wax scraping device is characterized by comprising the following steps: the wax scraping device is a wellhead sucker rod wax scraper and comprises a base (1), a wax scraping sheet guide disc (9) and a positioning disc (22); the upper part of the positioning disc (22) is connected with 3 hinged supports (27), and the hinged support (27) at the upper part of the positioning disc (22) is connected with the lower end of the roller frame (3) through a long shaft pin (2); the upper end of the roller frame (3) is connected with a wax scraping sheet (10) through a wax scraping sheet pin (11); the inner side of the middle upper part of each roller carrier (3) is connected with a roller (5) through a short shaft pin (6); the base (1) consists of a fixed mechanism and a movable mechanism; the paraffin scraping sheet guide disc (9) is circumferentially provided with 3 open grooves which are uniformly distributed, each groove is internally provided with a paraffin scraping sheet (10), and each paraffin scraping sheet (10) is fixedly connected with a fixed spring seat (13) through a bolt (17); a spring (14) is arranged between the fixed spring seat (13) and a spring gland (19) at one side end; the spring gland (19) is internally connected with a spring adjusting seat (15) through a spring adjusting bolt (18); the wax scraping sheet guide disc (9) and the positioning disc (22) are connected together through a plurality of stud bolts (4); the centers of the base (1), the wax scraping sheet guide disc (9) and the positioning disc (22) are all provided with central holes; the fixing mechanism consists of a limiting disc (24) and a fixing base (26), and the limiting disc (24) is connected with the fixing base (26) at the lower part through a bolt; the movable mechanism is formed by welding a positioning disc (22), a connecting sleeve (23) and a lower disc (25) together from top to bottom, and the movable mechanism is connected with a space between a fixed base (26) and a limiting disc (24) of the fixed mechanism through the lower disc (25) of the movable mechanism; the lower part of the fixed base (26) is connected with a joint (30);
two sides of the spring gland (19) are connected with one end of a loose joint bolt (8) through a cylindrical pin (7); the other end of the loose joint bolt (8) is connected on the wax scraping sheet guide disc through a screw thread; the upper part of the wax scraping sheet guide disc (9) is fixedly connected with an annular guide disc pad (20) through three inner hexagonal screws;
the control method comprises the following steps:
(1) connecting a wellhead sucker rod wax scraper to a Christmas tree through a connector (30), wherein the sucker rod sequentially passes through the connector (30), a fixed base (26) of the wellhead sucker rod wax scraper, a lower disc (25), a connecting sleeve (23), a limiting disc (24), a positioning disc (22), a roller frame (3), a roller (5), a wax scraping sheet (10), a wax scraping sheet guide disc (9) and an annular guide disc pad (20) from bottom to top;
(2) according to the hardness of the oil wax of the sucker rod, the spring adjusting bolt is adjusted to enable the spring (14) to be in a reasonable elastic force range; when the big hook of the operation machine drives the sucker rod elevator and the sucker rod elevator drives the sucker rod to go up, the alternating load of the big hook enables the sucker rod to swing front and back and left and right in an oil pipe of a well head, the sucker rod drives the lower disc (25) to swing front and back and left and right in the range of the limiting disc (24), the lower disc (25) drives the connecting sleeve (23), the positioning disc (22) and all parts on the upper part of the positioning disc to swing front and back and left and right along with the sucker rod, the sucker rod is ensured to be always positioned at the center of the wax scraper of the sucker;
(3) at the moment, the wax scraping sheet (10) is always tightly held by the sucker rod body through the elasticity of the compressed spring (14), when an ascending sucker rod coupling or centralizer approaches to the roller (5) of the roller carrier (3), the sucker rod coupling or centralizer is pushed to drive the roller carrier (3) to move outwards when ascending, the roller carrier drives the wax scraping sheet arranged on the roller carrier to move outwards along the groove at the lower part of the wax scraping sheet guide disc, the wax scraping sheet compresses the spring (14), and the ascending space of the sucker rod coupling or centralizer is vacated, so that the sucker rod coupling or centralizer can smoothly pass through the wax scraping sheet;
(4) when the sucker rod coupling or centralizer passes through the paraffin scraping sheets, the spring pushes the paraffin scraping sheets (10) to return by elasticity, the sucker rod is held tightly continuously, and the folded inner diameter of the 3 paraffin scraping sheets is consistent with the outer diameter of the sucker rod body, so that the oil wax on the sucker rod is scraped off smoothly;
(5) the scraped oil wax flows out along the gap between two adjacent stud bolts (4) and the gap between the stud bolts (4) and the roller carrier (3), flows into a recovery tank below a wellhead, and is recovered and treated uniformly by a dirty oil and sewage recovery device.
2. The method for controlling the tubing coupling to smoothly pass through the wax scraping device according to claim 1, wherein the method comprises the following steps: the wax scraping sheet (10) has three types of phi 25, phi 22 and phi 19, and is selected according to the outer diameters phi 25, phi 22 and phi 19 of the sucker rod body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477412.2A CN108661600B (en) | 2018-05-18 | 2018-05-18 | Control method for smooth passing of tubing coupling through wax scraping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477412.2A CN108661600B (en) | 2018-05-18 | 2018-05-18 | Control method for smooth passing of tubing coupling through wax scraping device |
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| CN108661600A CN108661600A (en) | 2018-10-16 |
| CN108661600B true CN108661600B (en) | 2021-06-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111206910B (en) * | 2020-01-19 | 2020-10-27 | 延安兴庆石油工程技术服务有限公司 | Hydraulic jet staged fracturing tool for horizontal well |
| CN112227981B (en) * | 2020-11-11 | 2021-07-13 | 徐海英 | Carbon fiber sucker rod centralizer |
| CN113738308B (en) * | 2021-09-26 | 2023-09-15 | 河北宇通特种胶管有限公司 | Device for removing wax from oil well pipeline for oil exploitation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2558761Y (en) * | 2002-07-12 | 2003-07-02 | 长庆石油勘探局第二采油技术服务处 | Eccentric self-adjusting wellhead pumping rod wax scraper |
| CN2906050Y (en) * | 2006-03-03 | 2007-05-30 | 长庆石油勘探局 | Self-adjusting type paraffin scraper for wellhead sucker rod |
| CN101280675A (en) * | 2008-05-28 | 2008-10-08 | 大庆石油管理局 | Pumping rod wax scraping apparatus |
| CN204941460U (en) * | 2015-09-25 | 2016-01-06 | 王克新 | Roller type rod tube paraffin cleaner |
-
2018
- 2018-05-18 CN CN201810477412.2A patent/CN108661600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2558761Y (en) * | 2002-07-12 | 2003-07-02 | 长庆石油勘探局第二采油技术服务处 | Eccentric self-adjusting wellhead pumping rod wax scraper |
| CN2906050Y (en) * | 2006-03-03 | 2007-05-30 | 长庆石油勘探局 | Self-adjusting type paraffin scraper for wellhead sucker rod |
| CN101280675A (en) * | 2008-05-28 | 2008-10-08 | 大庆石油管理局 | Pumping rod wax scraping apparatus |
| CN204941460U (en) * | 2015-09-25 | 2016-01-06 | 王克新 | Roller type rod tube paraffin cleaner |
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| CN108661600A (en) | 2018-10-16 |
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