CN2509319Y

CN2509319Y - Automatic scraper specially adapted for pumping well

Info

Publication number: CN2509319Y
Application number: CN 01258874
Authority: CN
Inventors: 郝柏树; 李兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-30
Filing date: 2001-08-30
Publication date: 2002-09-04
Anticipated expiration: 2011-08-30

Abstract

The utility model relates to an automatic scraper adapted for pumping well. The main improvement of the utility model is that: the three film flat spring at the two ends of the paraffin cutting shuttle are changed to two film flat spring, so as to prevent a sucker rod from sliding in operation; the stepping ratchet at the holding end of the flat spring is removed, thus simplifying the structure; the communication tooth at he paraffin cutting shuttle is changed into a single face skewed tooth, so as to enhance the intensity and service life; and a lower commutator is improved and a central magnetic field is positioned below the lower commutator, so as to prevent a handle latch and broken parts from falling and blocking the pump when reverse. The utility model is more reasonable in structure, more reliable in working, the work life is extended, the application range is enlarged and has a significant effect.

Description

The automatic paraffin cutting apparatus for eliminating sludge of pumpingh well

Technical field

The utility model relates to oil recovery equipment attachment device, the automatic paraffin cutting apparatus for eliminating sludge of promptly a kind of pumpingh well.

Background technology

Oil field pumping well amasss wax, has not only reduced oil production rate, and increases power consumption and cost for oil production.For removing the dirts such as long-pending wax on pumpingh well well casing inwall and the sucker rod, existing method mainly is that heat is washed and chemical cleaning.Also have in recent years and magnetic force wax control device, nylon are installed are scraped wax stone and various mechanical type paraffin scrapers.But it is short duty cycle that heat is washed with chemical paraffin removal, the cost height; Magnetic force wax control device and nylon are scraped the wax stone weak effect; Though the mechanical type paraffin scraper effect of Chu Xianing is better in recent years, in service in the down-hole sometimes because of Ka Jing causes stopping production, still there is not large tracts of land to promote so far.

Chinese patent ZL93244097.5 disclosed " the automatic paraffin cleaner of pumpingh well " is by the last commutator that is installed in oil pick-up tube wax deposition district upper and lower end, down commutator and card are embraced a sucker rod, and with the motion of sucker rod between upper and lower commutator in the oil pipe " wax removal shuttle " three parts of the reciprocal paraffin cutting scale removal of stepping form.Hollow garden, wax removal shuttle stage casing pipe is gone up in each vertically uniform slotted eye the commutation ratchet that crown exposes, there is restorer both sides is set, the profile of tooth of commutation ratchet is three low profiles of tooth of middle straight tooth depth, both sides tooth (promptly double-faced toothed), there is the outside annular scraper of cutting edge at pipe two ends, hollow garden, and two ends respectively are fixed with three stepping leaf springs, the stepping ratchet that the stepping leaf spring reveals in filling the span of a man's arms and being equipped with on the little axle of through hole of end.Wax removal outer drive spindle when paraffin removal from oil well organ pipe chamber internal diameter fully exposes greater than the ratchet that commutates on the wax removal shuttle.There is the thrust ring of internal diameter less than the hollow garden of cleaning shuttle pipe maximum outside diameter the tube chamber upper end of last commutator and the tube chamber lower end of following parallel operation.And the inner chamber of upper and lower commutation organ pipe all has one to guarantee the level and smooth conical transition zone that passes in and out of wax removal shuttle.Though this kind mechanical type paraffin removal unit energy operate as normal, have following shortcoming: 1, the stepping tooth effect on the stepping spring is not obvious, and easily broken whereabouts; 2, three-chip type stepping spring easily withdraws from sucker rod; 3, the commutating tooth tooth Shape Design is unreasonable; 4, unshielded measure, holddown for some reason sometimes; 5, specification is single, is only applicable to 2 o'clock half oil pick-up tube, can not be used for 3 o'clock oil pick-up tube.

Summary of the invention

The utility model will solve the problem that above-mentioned oil well paraffin removal device exists just, provides a kind of rational in infrastructure, the automatic paraffin cutting apparatus for eliminating sludge of the pumpingh well of reliable operation long service life.

For this reason and the design the automatic paraffin cutting apparatus for eliminating sludge of pumpingh well by being installed in the oil well oil-pumping tubing wax deposition district, the last commutator of lower end, following commutator, and on betwixt in the oil pick-up tube, the wax removal shuttle of the reciprocal paraffin cutting scale removal of step-by-step movement of moving is formed down, wax removal shuttle stage casing is a hollow garden pipe, there are toroidal helical scraper and two anodontia stepping leaf springs of clasping sucker rod in its two ends, hollow garden pipe is gone up six groups of commutating tooths vertically is installed, commutating tooth is the single face slope shape, there is double-deck reseting spring leaf both sides, the commutating tooth slope is towards unanimity on the same group, but organizes the commutating tooth slope towards opposite with the neighbour.But establish the central magnetic field protector of annular magnet on the oil pick-up tube under the following commutator in the winding.On the following commutator inner chamber epimere tapering transition section anti-skidding annular groove is arranged.When being equipped with 3 o'clock oil pick-up tube, the internal diameter of wax removal shuttle stage casing hollow section can pass through to guarantee that rod connector is smooth and easy greater than 58 millimeters.

The existing type of the automatic paraffin cutting apparatus for eliminating sludge of the utility model pumpingh well simplifies the structure, and it is more reliable to work, and prolong application life, can stop the holddown accident, widened the scope of application, and benefit is obvious.

Description of drawings

Fig. 1, be the wax removal shuttle modular construction schematic diagram of the utility model.

Fig. 2, Fig. 3 are the commutating tooth structural representation on the wax removal shuttle.

Fig. 4 is a commutator schematic diagram under the utility model.

Fig. 5, Fig. 6 are core field protector schematic diagram among the utility model.

The specific embodiment

As shown in Figure 1, the stage casing of main working parts wax removal shuttle of the present utility model is a hollow garden pipe 5, and there are toroidal helical scraper 6 and two stepping leaf springs 1 in its two ends, on the hollow garden pipe 5 six groups of commutating tooths 2 is installed vertically, there is double-deck reseting leaf 3 commutating tooth 2 both sides, on the hollow garden pipe 5 through hole 4 are arranged.

As Fig. 2, shown in Figure 3, the crown 8 of the commutating tooth 2 on the wax removal shuttle is the single face slope shape, and axis hole 7 diameters are 2.2 millimeters.

As shown in Figure 4, following commutator 9 upper and lower ends have

oil connection

12,10, on its inner chamber epimere conical transition zone 11 anti-skidding annular groove are arranged, swing to because of indivedual commutating tooths 2 skid avoiding, with other commutating tooth 2 towards differing latch.

As Fig. 5, shown in Figure 6; be installed in down that central magnetic field protector 13 upper and lower ends on the oil pick-up tube have oil connection 17 and 14 under the commutator 9; the annular magnet 16 that band cavity 15 is housed in it is to hold the broken steel and iron parts of whereabouts, in case holddown is guaranteed the device security running.

Claims

1, the automatic paraffin cutting apparatus for eliminating sludge of pumpingh well, by being installed in the oil pick-up tube wax deposition district, the last commutator of lower end, following commutator, and on betwixt in the oil pick-up tube, the wax removal shuttle of the reciprocal paraffin cutting scale removal of step-by-step movement of moving is formed down, it is characterized in that said wax removal shuttle stage casing is a hollow garden pipe (5), there are toroidal helical scraper (6) and two anodontia stepping leaf springs (1) of clasping sucker rod in its two ends, hollow garden pipe (5) is gone up six groups of commutating tooths (2) vertically is installed, commutating tooth (2) is the single face slope shape, there is double-deck reseting spring leaf (3) both sides, commutating tooth (2) slope is towards unanimity on the same group, but organizes commutating tooth (2) slope towards opposite with the neighbour.

2, the automatic paraffin cutting apparatus for eliminating sludge of pumpingh well according to claim 1 is characterized in that on said down commutator (9) oil pick-up tube down and the central magnetic field protector (13) of annular magnet (16) is established in winding in having.

3, the automatic paraffin cutting apparatus for eliminating sludge of pumpingh well according to claim 1 and 2 is characterized in that on the said following commutator inner chamber epimere tapering transition section (11) anti-skidding annular groove being arranged.

4, the automatic paraffin cutting apparatus for eliminating sludge of pumpingh well according to claim 1 and 2, the internal diameter diameter that it is characterized in that the hollow garden pipe in said wax removal shuttle stage casing (5) is greater than 58 millimeters.