CN2635909Y

CN2635909Y - Rotary impact type mechanical wax scraper

Info

Publication number: CN2635909Y
Application number: CN 03208560
Authority: CN
Inventors: 张英志; 李淑红; 张居华; 刘野; 郎忠仁; 李立东
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Daqing Oilfield Co Ltd
Priority date: 2003-08-28
Filing date: 2003-08-28
Publication date: 2004-08-25
Anticipated expiration: 2013-08-28

Abstract

The utility model relates to a rotary impact mechanical paraffin scraper which can mainly solve the problems of the prior paraffin scraper such as difficulties in downward movement, long paraffin removal time and high labor intensity of worker, etc., and is characterized in that: the both ends of a paraffin cutter (1) are fixed on a core bar (3) through a jacket (2), by an outer nut and an inner nut (4 and 5), the upper end of the core bar (3) is fixed inside a rotator (7) connected with a rope socket (6), and through a guide way (8), the lower end of the core bar (3) is connected with a weight bar cover (9) under which a rotary sleeve (11) is connected; and a screw rod (10) whose bottom is connected with a cone-shaped rotary bit (12) with a plurality of fins (15) in axial direction is clipped and set inside the rotary sleeve (11). The utility mode has the advantages of short paraffin removal time, low labor intensity of worker and favorable paraffin removal quality.

Description

Rotary impact type machinery paraffin scraper

Technical field:

The utility model relates to the used wax scraping apparatus in oil recovery field, oil field, especially rotary impact type machinery paraffin scraper.

Background technology:

Oil is the mixture of multiple hydrocarbon, wax is a kind of in these mixtures, in the extraction process of oil, along with temperature and pressure decline and light components are constantly overflowed, the molten wax ability of crude oil reduces, wax begins crystallization, separates out, assembles, and constantly deposit on the tube inner wall, stop up oil pipe, directly influence is produced, therefore, the wax control of oil well and wax removal are crucial technical measures that guarantee the waxy crude oil ordinary production.The method of wax removal has medicine and mechanical paraffin removal, mechanical paraffin removal at present mainly contains a kind of, use the supporting plummet of figure of eight paraffin scraper, be connected under the plummet deadweight effect by steel wire and go into the well by lubricator, the long-pending wax of figure of eight paraffin scraper scraping tube inner wall in going down process, but the poly-electric pump well that drives is owing to the extraction fluid viscosity increases, wax is harder on the tube wall, make the descending difficulty of figure of eight paraffin scraper, be difficult to reach the predetermined paraffin cutting degree of depth, must by repeatedly up and down handling just can finish, cause individual well wax removal time lengthening, working strength to increase like this; In addition, use conventional wax removal difficulty, wax removal difficult quality guarantee for new well or complicated well.

The utility model content:

The descending difficulty of existing paraffin scraper, wax removal time are long in order to overcome, labor strength reaches the ropy deficiency of wax removal greatly, the utility model provides a kind of rotary impact type machinery paraffin scraper, and this rotary impact type machinery paraffin scraper has short, the low good characteristics of wax removal mass effect that reach of labor strength of wax removal time.

The technical solution of the utility model is: this rotary impact type machinery paraffin scraper comprises paraffin scraper, the paraffin scraper two ends are fixed on the core bar by overcoat, the core bar upper end is fixed in the rotor that links to each other with the rope socket of an end band umbrella shape tooth by interior outer nut, the core bar lower end is that the guide way of drum type links to each other with the weighted lever cover by the end, the rotary sleeve that the weighted lever cover is connected with the hole of the some built-in steel balls of lower end band down and the cover that is fixed fixes, be covered with screw rod by steel ball mutually with its helicla flute in the rotary sleeve, the rotary drilling-head with the some fin tapers of axial zone under the screw rod links to each other.

The beneficial effect that the utlity model has is: overlap the rotary sleeve that fixes owing to be connected with the hole of the some built-in steel balls of lower end band and be fixed under weighted lever cover under the rotary impact type machinery paraffin scraper, be covered with screw rod by steel ball mutually with its helicla flute in the rotary sleeve, rotary drilling-head with the some fin tapers of axial zone under the screw rod links to each other, when driving when running in electric pump well or the complicated well than hard wax matter poly-, rotary drilling-head is descending along the track rotation of steel ball and screw rod formation, and the assurance rotary drilling-head is scraped along the descending Churn drill that carries out of former direction under the guide way effect, drive the paraffin scraper rotation simultaneously the long-pending wax of tube wall is carried out scraping, can further overcome descending resistance, shorten the wax removal time, improve the wax removal quality.Be connected with band umbrella shape tooth rope socket in the core bar upper end by rotor simultaneously, with regard to having solved the problem that every mouthful of well of existing paraffin scraper is knit rope socket, reduced working strength of workers like this,, also be convenient to salvage even fall the well accident.

Description of drawings:

Accompanying drawing 1 is the utility model structure sectional view;

Accompanying drawing 2 is the utility model I-I place amplification views.

1-paraffin scraper among the figure, 2-overcoat, 3-core bar, 4-inner nut, 5-outer nut, 6-rope socket, 7-rotor, 8-guide way, 9-weighted lever cover, 10-screw rod, 11-rotary sleeve, 12-rotary drilling-head, 13-tooth, 14-helicla flute, 15-fin, 16-steel ball, 17-fixed cover.

The specific embodiment:

Below in conjunction with accompanying drawing will the utility model is described in further detail:

In conjunction with shown in Figure 2, this rotary impact type machinery paraffin scraper comprises paraffin scraper 1 by Fig. 1, and paraffin scraper 1 two ends are fixed on core bar by overcoat 2, and about in the of 3 two ends, and paraffin scraper 1 plays the paraffin cutting effect; Core bar (3) upper end is fixed in the rotor 7 by inner nut 4, and core bar 3 upper ends are fixed on the inner nut 4 by outer nut 5, and clamping has bearing between inner nut 4 and the outer nut 5, connects like this to make paraffin scraper 1 to rotate freely; Rotor 7 upper ends link to each other with rope socket 6, and some umbrella shape teeth 13 are with in rope socket 6 upper ends, are convenient to be connected with steel wire, needn't knit rope socket by every mouthful of well, even fall the well accident, also are convenient to salvage; Core bar 3 lower ends are that guide way 8 and the weighted lever cover 9 of drum type links to each other by the end, and it is descending along tube axis direction to set upright this paraffin scraper by guide way 8, can the interior wax of uniform and complete scraping oil pipe; The weighted lever cover is connected with rotary sleeve 11 9 times, the some built-in steel balls of rotary sleeve 11 lower end bands 16 holes, the steel ball 16 and the cover 17 that is fixed fix, be covered with screw rod 10 in the rotary sleeve 11 mutually, have with steel ball 16 on screw rod 10 outer walls and touch helicla flute 14 mutually, when rotary drilling-head 12 is hampered power, helicla flute 14 on the screw rod 10 is descending under screw under the control of steel ball 16, also the spiral rotation is descending for screw rod 10 driven rotary drill bits 12, make rotary drilling-head 12 produce a screw lower punch power, carry out Churn drill and scrape, overcome descending resistance, shorten the wax removal time, improve the wax removal quality; Screw rod is connected with rotary drilling-head 12 10 times, and rotary drilling-head 12 is taper, and the some fins 15 of axial zone, and when rotary drilling-head 12 was descending, the fin 15 on the drill bit 12 can impact paraffin cutting to inside pipe wall, and can reduce downward resistance.

Claims

1, a kind of rotary impact type machinery paraffin scraper, comprise paraffin scraper (1), it is characterized in that: paraffin scraper (1) two ends are fixed on the core bar (3) by overcoat (2), core bar (3) upper end is by interior outer nut (4,5) be fixed in the rotor (7) that links to each other with the rope socket (6) of an end band umbrella shape tooth (13), core bar (3) lower end is that the guide way (8) of drum type links to each other with weighted lever cover (9) by the end, be connected with the hole of the some built-in steel balls of lower end band (16) under the weighted lever cover (9) and rotary sleeve (11) that the cover (17) that is fixed fixes, be covered with screw rod (10) by steel ball (16) mutually with its helicla flute (14) in the rotary sleeve (11), screw rod (10) links to each other with the rotary drilling-head (12) of the some fins of axial zone (15) taper down.