CN212837699U - Wax scraping device for self-blowing well - Google Patents

Abstract

The utility model provides a flowing well wax scraping device belongs to oil development technical field. The wax scraping device of the self-blowing well comprises a support rod, a wax scraping sheet and a lance piece, wherein the wax scraping sheet is rotatably sleeved on the support rod; the lance thorn piece includes well cavity pole and a plurality of thorn head, the first end detachable of well cavity pole is installed the first end of bracing piece, just well cavity pole with coaxial arrangement between the bracing piece, the inside heavy object that has of well cavity pole, every thorn head all is located on the outer wall of well cavity pole. Can hit garrulous and peel off the most wax deposit attached to on the production string inner wall through the lance thorn piece to wax scraper can scrape off the wax deposit on the production string inner wall fast.

Description

Wax scraping device for self-blowing well

Technical Field

The disclosure relates to the technical field of oil exploitation, in particular to a wax scraping device for a flowing well.

Background

In the later stage of oil field development, a batch of low-pressure flowing wells are obtained after reservoir transformation through a fracturing technology and the like, and the low-pressure flowing wells can generate irregular annular crystalline wax in the production process to cause pipe diameter blockage. Therefore, the flowing well needs to be cleaned of wax regularly during the production process.

In the related art, mechanical wax removal is usually adopted when wax removal is performed in a flowing well. Mechanical paraffin removal generally employs a paraffin removal device for paraffin removal, which generally comprises: the wax scraping device comprises a supporting rod, a wax scraping sheet sleeved on the supporting rod and a weighting rod arranged at the bottom end of the supporting rod. Wherein, the top of the supporting rod is connected with a winch on the ground through a steel wire. When scraping the wax operation, will scrape the wax device and transfer to the production tubular column in, bracing piece and wax scraping piece downstream under the action of gravity of aggravating the pole, at this in-process, the paraffin on the production tubular column inner wall is scraped to the impact force that wax scraping piece utilized the three downstream to produce, makes the paraffin that is scraped along with going upward oil gas together arrange to the well head.

However, in the above mechanical paraffin scraping method, when paraffin is removed, the paraffin scraping device scrapes off paraffin on the inner wall of the production string by virtue of downward impact force of the paraffin scraping device, so that if excessive hard wax exists on the inner wall of the production string during paraffin scraping operation, the paraffin scraping sheet is easy to deform and is stuck in the production string, and normal production of an oil well is affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a flowing well wax scraping device, which can prevent the wax scraping device from being stuck in a tubular column. The technical scheme is as follows:

the embodiment of the disclosure provides a wax scraping device for a flowing well, which comprises a supporting rod, a wax scraping sheet and a lance piece,

the wax scraping sheet is rotatably sleeved on the supporting rod;

the lance thorn piece includes well cavity pole and a plurality of thorn head, the first end detachable of well cavity pole is installed the first end of bracing piece, just well cavity pole with coaxial arrangement between the bracing piece, the inside heavy object that has of well cavity pole, every thorn head all is located on the outer wall of well cavity pole.

In one implementation of the present disclosure, each the bayonet deviates from one side of the hollow rod all has an inclined plane, the inclined plane with an included angle between the axis directions of the hollow rod is an acute angle, just the opening orientation of the included angle the first end of the hollow rod.

In another implementation of the disclosure, each of the burs is helically arranged along an axis of the hollow shaft.

In yet another implementation of the present disclosure, the second end of the hollow rod is provided with a conical tip.

In yet another implementation of the present disclosure, the wax scraping plate includes a first sharp arc portion, a tubular body, and a second sharp arc portion, the first sharp arc portion and the second sharp arc portion are respectively located at opposite ends of the tubular body, the first sharp arc portion faces the first end of the supporting rod, and the second sharp arc portion faces the second end of the supporting rod.

In another implementation manner of the present disclosure, the tubular body has an opening thereon, the opening penetrates through a tube wall of the tubular body, the opening is located between the first sharp arc portion and the second sharp arc portion, and the opening is respectively communicated with the first sharp arc portion and the second sharp arc portion.

In another implementation manner of the present disclosure, each of the first sharp arc portion and the second sharp arc portion has a shaft sleeve thereon, and each of the shaft sleeves is rotatably sleeved on the supporting rod.

In another implementation of the present disclosure, the outer peripheral wall of the support rod has two stoppers, and two bushings are located between the two stoppers.

In yet another implementation of the present disclosure, the flowing well wax scraping apparatus further includes a first connector fixed to the first end of the support rod, the first end of the hollow rod and the first connector being screw-fitted together.

In another implementation manner of the present disclosure, the wax scraping device for the flowing well further includes a steel wire connector and a second connector, the second connector is fixed to the second end of the support rod, and the steel wire connector is inserted into the second connector in a threaded manner.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

when the wax deposition of production string in to the blowout well is cleared up to the wax scraping device that this embodiment provided, because this blowout well wax scraping device includes the bracing piece, scrapes wax piece and lance thorn piece, so can connect wire rope on the second end of bracing piece to control this wax scraping device through the winch and realize paraffin removal. And, owing to the setting of lance thorn piece, can make lance thorn piece can hit garrulous and peel off with following the bracing piece downstream's in-process most wax deposition attached to on the production string inner wall in the blowout well like this, so that wax scraping sheet can strike off wax deposition on the production string inner wall in the blowout well fast, and then the effectual wax scraping sheet of avoiding is scraping when wax operation, because wax deposition on the production string is too many and take place to warp or blocked the problem that can not rotate by wax deposition, finally improve greatly and scrape wax operating efficiency.

Moreover, because the hollow rod is arranged in the lance piece, weights such as lead and the like can be directly arranged in the hollow rod, so that the wax scraping device of the self-blowing well does not need to be connected with the weight rod, the structure is greatly simplified, and the cost is saved. The flowing well wax scraping device provided by the embodiment is simple in structure, low in manufacturing cost and suitable for wide application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a flowing well wax scraping device provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a bayonet according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a hollow rod provided in an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a wax scraping sheet provided in an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a side surface of a wax scraping sheet according to an embodiment of the disclosure.

The symbols in the drawings represent the following meanings:

1. a support bar; 11. a stopper;

2. scraping wax sheets; 21. a first sharp-arc portion; 22. a tubular body; 23. a second sharp-arc portion; 24. a shaft sleeve; 221. an opening; 222. an arc-shaped hole;

3. a lance member; 31. a hollow shaft; 311. a conical tip; 32. pricking a head; 321. a bevel;

4. a first connector; 5. a wire connector; 6. a second connector.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The embodiment of the disclosure provides a flowing well wax scraping device, as shown in fig. 1, the flowing well wax scraping device comprises a support rod 1, a wax scraping sheet 2 and a lance 3.

The wax scraping sheet 2 is rotatably sleeved on the supporting rod 1.

The lance 3 comprises a hollow rod 31 and a plurality of piercing heads 32, the first end of the hollow rod 31 is detachably mounted at the first end of the support rod 1, the hollow rod 31 and the support rod 1 are coaxially arranged, a heavy object is arranged inside the hollow rod 31, and each piercing head 32 is located on the outer wall of the hollow rod 31.

When the wax deposition of production string in to the blowout well is cleared up to the wax scraping device that this embodiment provided, because this blowout well wax scraping device includes bracing piece 1, wax scraping piece 2 and lance thorn piece 3, so can connect wire rope on the second end of bracing piece 1 to control this wax scraping device through the winch and realize paraffin removal. And, owing to the setting of lance thorn piece 3, can make lance thorn piece 3 hit garrulous and peel off following the in-process of 1 downstream of bracing piece on the production string inner wall in the blowout well adnexed most wax deposit like this, so scrape wax sheet 2 can strike off the wax deposit on the production string inner wall in the blowout well fast, and then effectual wax sheet 2 of avoiding scraping is scraping when the wax operation, because wax deposit on the production string is too many and take place to warp or blocked the problem that can not rotate by wax deposit, finally improve greatly and scrape wax operating efficiency.

Moreover, because the hollow rod 31 is arranged in the lance part 3, heavy objects such as lead and the like can be directly arranged in the hollow rod 31, so that the wax scraping device of the self-blowing well does not need to be connected with the heavy rod, the structure is greatly simplified, and the cost is saved. The flowing well wax scraping device provided by the embodiment is simple in structure, low in manufacturing cost and suitable for wide application.

Optionally, a side of each of the bits 32 facing away from the hollow rod 31 has an inclined surface 321, an included angle between the inclined surface 321 and the axial direction of the hollow rod 31 is an acute angle, and an opening of the included angle faces the first end of the hollow rod 31.

In the implementation manner, the inclined surface 321 is arranged on the stabbing head 32, so that the stabbing head 32 can quickly cut and peel off accumulated wax when contacting the accumulated wax in the production string, and further the wax scraping efficiency is improved.

Fig. 2 is a schematic structural diagram of the bayonet provided by the embodiment of the present disclosure, and in conjunction with fig. 2, for example, an included angle α between the inclined surface 321 of each bayonet 32 and the axis of the support rod 1 may be 30 °.

In the implementation manner, the inclined surface 321 can be further ensured to have better cutting capability by the arrangement, and accumulated wax in the production string can be quickly scraped away.

Fig. 3 is a schematic structural view of a hollow rod provided by the embodiment of the present disclosure, and in conjunction with fig. 3, optionally, each of the spikes 32 is spirally arranged along the axis of the hollow rod 31.

In above-mentioned implementation, thorn head 32 spiral is arranged on cavity pole 31, can be so that lance piece 3 produces certain torsion when the wax deposition contacts, and transmit the torsion that should form for paraffin scraper 2, paraffin scraper 2 receives the aggravation effect of the inside weight of cavity pole 31 and thorn head 32's torsion effect, can be in the production string internal rotation, and then forms secondary rotary-cut and cut apart to the wax deposition in the production string, has realized dotted line form waxing and has scraped the wax synchronous, improves and scrapes wax efficiency.

Optionally, the second end of the hollow rod 31 is provided with a conical tip 311.

In the implementation manner, the arrangement of the conical tip 311 can enable the hollow rod 31 to effectively break up and peel off irregular annular wax deposition in the production string during the descending process, thereby further improving the wax scraping efficiency.

For example, the taper angle β of the taper tip 311 may be machined to 45 °.

In this embodiment, the lance 3 can be made by the waste polish rod, so that the manufacturing cost can be greatly reduced.

Fig. 4 is a schematic structural diagram of the wax scraping plate provided by the embodiment of the present disclosure, and with reference to fig. 4, optionally, the wax scraping plate 2 includes a first sharp-arc portion 21, a tubular body 22 and a second sharp-arc portion 23, the first sharp-arc portion 21 and the second sharp-arc portion 23 are respectively located at two opposite ends of the tubular body 22, the first sharp-arc portion 21 faces a first end of the supporting rod 1, and the second sharp-arc portion 23 faces a second end of the supporting rod 1.

In the above-mentioned implementation, set up first sharp arc portion 21 and second sharp arc portion 23 through the opposite both ends at tubular body 22, can make wax scraping plate 2 go upward like this, mainly scrape the long-pending wax on the production tubular column inner wall through first sharp arc portion 21, when wax scraping plate 2 goes downward, mainly scrape the long-pending wax on the production tubular column inner wall through second sharp arc portion 23. Moreover, no matter whether the wax scraping sheet 2 moves upwards or downwards, the wax scraping effect can be improved by arranging two sharp arc parts, and even if one of the sharp arc parts is not scraped completely, the other sharp arc part can be used for scraping again.

In addition, the wax scraping sheet 2 is provided with a tubular body 22, and scraped wax can be discharged into a well from the first sharp-arc part 21 or the second sharp-arc part 23 through the tubular body 22, and then the wax is discharged out of the well along with oil and gas in a production string, so that the wax is prevented from accumulating in the first sharp-arc part 21 or the second sharp-arc part 23 and being pasted on the wax scraping sheet 2.

Optionally, the tubular body 22 has an opening 221, the opening 221 penetrates through a tube wall of the tubular body, the opening 221 is located between the first sharp arc portion 21 and the second sharp arc portion 23, and the opening 221 is respectively communicated with the first sharp arc portion 21 and the second sharp arc portion 23.

In the above implementation manner, the opening 221 is configured to smoothly discharge the scraped paraffin out of the paraffin scraping blade 2 and discharge the scraped paraffin out of the wellhead along with the oil gas.

Optionally, the first sharp arc part 21 and the second sharp arc part 23 are provided with bushings 24, and each bushing 24 is rotatably sleeved on the supporting rod 1.

In the above-mentioned implementation mode, through setting up axle sleeve 24 to make axle sleeve 24 rotationally overlap on bracing piece 1, can guarantee like this to scrape wax piece 2 and can carry out the free rotation relatively the production string inner wall at the operation in-process, and then realize rotating the scraping, and not only rely on scraping the whole decurrent impact force of wax scraping device and scrape, further improved the operating efficiency.

Illustratively, each shaft sleeve 24 is in clearance fit with the support rod 1. The bushing 24 may be fixed on the inner wall of the wax scraping plate 2 by welding to ensure the tightness of the connection between the bushing 24 and the wax scraping plate 2.

Fig. 5 is a schematic structural diagram of a side surface of the wax scraping plate provided in the embodiment of the present disclosure, and in combination with fig. 5, optionally, an arc-shaped hole 222 is formed on an outer side wall of the tubular body 22, the arc-shaped hole 222 penetrates through a tube wall of the tubular body 22, and the arc-shaped hole 222 is arranged opposite to the opening 221.

In above-mentioned implementation, the setting of arc hole 222 can further improve and scrape wax work efficiency, can make the paraffin that is scraped off by scraping wax piece 2 break away from through arc hole 222 fast scraping wax piece 2, then along with going upward oil gas together arrange to the well head. That is, during the wax scraping operation, the paraffin wax scraped off by the wax scraping blade 2 can not only leave the inside of the wax scraping blade 2 through the opening 221 but also leave the inside of the wax scraping blade 2 through the arc-shaped hole 222.

Optionally, the support rod 1 has two stops 11 on its outer peripheral wall, and two bushings 24 are located between the two stops 11.

In above-mentioned implementation, setting up of dog 11 can effectually avoid scraping wax piece 2 and scraping wax operation in-process drunkenness from top to bottom, and the wax effect is scraped in the influence.

Illustratively, the structure of the stopper 11 may be a cylindrical structural member. The stop block 11 can also be integrated with the support rod 1, and the stop block 11 can also be connected with the support rod 1 in a welding manner, so that the connection tightness between the stop block 11 and the support rod 1 can be ensured.

Optionally, the flowing well wax scraping device further comprises a first connector 4, the first connector 4 is fixed on the first end of the support rod 1, and the first end of the hollow rod 31 and the first connector 4 are assembled together in a threaded mode.

In the above implementation manner, the first connector 4 is arranged to detachably connect the hollow rod 31 and the support rod 1, which is convenient for use.

Illustratively, the first connecting joint 4 is hinged on the first end of the support bar 1 by means of a pin.

Optionally, the wax scraping device for the flowing well further comprises a steel wire connector 5 and a second connector 6, the second connector 6 is fixed on the second end of the support rod 1, and the steel wire connector 5 is inserted in the second connector 6 in a threaded manner.

In the above-mentioned realization side, wire rope is conveniently connected in setting up of wire connector 5, and then is connected through wire rope and subaerial winch, and second connector 6 can be connected facilitating the use with dismantling between wire connector 5 and bracing piece 1.

The second connecting head 6 is, for example, hinged to the second end of the support bar 1 by means of a pin.

The following is a brief acceptance of the working mode of the flowing well wax scraping device provided by the embodiment:

firstly, connecting a steel wire on a steel wire connector 5, and connecting the steel wire with a ground winch through the steel wire;

then, the wax scraper of the self-blowing well is put into the well through a winch to scrape off wax deposition in a production pipe column, the conical tip 311 in the hollow rod 31 is pulled by a weight in the hollow rod 31 to advance, meanwhile, the stabbing head 32 starts to cut the wax deposition, the spiral arrangement of the stabbing head 32 enables the hollow rod 31 to generate certain torque force and transmit the torque force to the wax scraping sheet 2, the wax scraping sheet 2 rotates, and the cut wax deposition is subjected to secondary rotary cutting, so that the synchronization of dotted-line wax scraping and wax scraping is effectively realized, and the problem of wax blockage and spray stopping of the self-blowing well is solved.

The materials used in the wax scraping device for the flowing well provided by the embodiment all belong to recycled materials, and the device is convenient to manufacture, practical and economical.

The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.

Claims (10)

1. A wax scraping device for a flowing well is characterized by comprising a supporting rod (1), a wax scraping sheet (2) and a lance piece (3),

the wax scraping sheet (2) is rotatably sleeved on the supporting rod (1);

lance thorn piece (3) are including cavity pole (31) and a plurality of thorn head (32), the first end detachable of cavity pole (31) is installed the first end of bracing piece (1), just cavity pole (31) with coaxial arrangement between bracing piece (1), cavity pole (31) inside has the heavy object, every thorn head (32) all are located on the outer wall of cavity pole (31).

2. The device for scraping wax from a flowing well according to claim 1, wherein a side of each stabbing head (32) facing away from the hollow rod (31) is provided with a bevel (321), an included angle between the bevel (321) and the axial direction of the hollow rod (31) is an acute angle, and the opening of the included angle faces to the first end of the hollow rod (31).

3. A flowing well wax scraping device according to claim 1, characterized in that each of the stabs (32) is arranged helically along the axis of the hollow rod (31).

4. A flowing well wax scraping device according to claim 1, characterized in that the second end of the hollow rod (31) is provided with a conical tip (311).

5. A flowing well wax scraping device according to claim 1, characterized in that the wax scraping sheet (2) comprises a first sharp arc portion (21), a tubular body (22) and a second sharp arc portion (23), the first sharp arc portion (21) and the second sharp arc portion (23) are respectively located at two opposite ends of the tubular body (22), the first sharp arc portion (21) faces the first end of the supporting rod (1), and the second sharp arc portion (23) faces the second end of the supporting rod (1).

6. A flowing well wax scraping device according to claim 5, characterized in that the tubular body (22) is provided with an opening (221), the opening (221) penetrates through the wall of the tubular body (22), the opening (221) is positioned between the first sharp arc part (21) and the second sharp arc part (23), and the opening (221) is respectively communicated with the first sharp arc part (21) and the second sharp arc part (23).

7. A flowing well wax scraping device according to claim 5, characterized in that the first sharp arc part (21) and the second sharp arc part (23) are provided with shaft sleeves (24), and each shaft sleeve (24) is rotatably sleeved on the support rod (1).

8. A flowing well wax scraping device according to claim 7, characterized in that the supporting rod (1) has two stops (11) on its peripheral wall, and two bushings (24) are located between the two stops (11).

9. A device for scraping wax from a flowing well according to any one of claims 1 to 8, characterized in that it further comprises a first connector (4), said first connector (4) being hinged on a first end of said supporting rod (1), said first end of said hollow rod (31) and said first connector (4) being screw-fitted together.

10. The wax scraping device for the flowing well according to any one of claims 1 to 8, further comprising a steel wire connector (5) and a second connector (6), wherein the second connector (6) is fixed on the second end of the support rod (1), and the steel wire connector (5) is inserted in the second connector (6) in a threaded manner.

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