CN2177800Y

CN2177800Y - Self-climbing well type wax scraper

Info

Publication number: CN2177800Y
Application number: CN 93247133
Authority: CN
Inventors: 郭�东
Original assignee: No1 Machinery Works North-China Petroleum Administration
Current assignee: No1 Machinery Works North-China Petroleum Administration
Priority date: 1993-12-17
Filing date: 1993-12-17
Publication date: 1994-09-21
Anticipated expiration: 2003-12-17

Abstract

The utility model relates to a device for clearing coagulation wax in an oil pipe in oil exploitation. The device for clearing coagulation wax in an oil pipe in oil exploitation is composed of a wax scrape device and a position limiting device. The wax scrape device is mainly composed of a reversing frame and a wax scrape barrel body. The wax scrape barrel body and the inner wall of an oil pipe are in sliding fit. The upper end and the lower end of the wax scrape barrel body are provided with wax scrape cutting edges, and are also provided with the barrel shape members of elastic drive arms which are oppositely arranged from top to bottom. The reversing frame is mutually contacted with the elastic drive arms by a supporting part which is in sliding fit with the inner wall of the wax scrape barrel body. One oil well only needs one device for clearing coagulation wax in an oil pipe in oil exploitation. The device for clearing coagulation wax in an oil pipe in oil exploitation has no special requirement to the raise and the lowering of a pump, and the raise and the lowering of the pump can be carried out according to a routine mode. The device for clearing coagulation wax in an oil pipe in oil exploitation is very convenient, timesaving, and labor saving. The work of the device for clearing coagulation wax in an oil pipe in oil exploitation is safe. The device for clearing coagulation wax in an oil pipe in oil exploitation is an economical and applicable oil well wax clearing device.

Description

Self-climbing well type wax scraper

The utility model relates to a kind of removing tubing wax device in the oil exploitation.

In recovering the oil at present,, use the hot water well-flushing always or on sucker rod, install and fix the formula paraffin scraper and carry out wax removal the wax deposition in the oil pipe.The hot water well-flushing, promptly in well, irritate, wax is melted away, according to the hole condition difference with high temperature water, need wash once in three days at least, winter, then the cycle was shorter, and each well-flushing will be employed several the professionals that draw waterwheel, boiler car and some, frequent like this well-flushing, not only expend a large amount of human and material resources, but also influence oil recovery amount, and also can bring harmful effect to oil reservoir, less economical.On beam hanger, install and fix the formula paraffin scraper, need every 1-4M one paraffin scraper to be installed according to the oil pumper length of stroke, a bite well often will be adorned hundreds of even thousands of paraffin scrapers, not only need more acquisition expenses, also giving down, pump, a pump operation have increased many difficulties and workload; Moreover during oil pumping, so many paraffin scrapers are done relative slip with sucker rod with oil pipe, certainly will increase the additional load of oil pumper, and concerning long-term work mechanism, the energy consumption cost of additional load also is an appreciable numeral.A kind of paraffin scraper is arranged in the recent period, it mainly is made of wax scraping apparatus, its weak point is: be subjected to the restriction of its structure, use pretty troublesome, inconvenience, poor for applicability, when requiring pump, seam between oil pipe and oil pipe must be mended flat with the benefit grommet of formulated, and is rising, during following pump, oil pipe, beam hanger must unload by root together, very inconvenient, and give, following pump has increased many additional workloads, sometimes because of rising, following infusion meaning less than, then paraffin scraper can be damaged, residual of the paraffin scraper that damages falls into oil pump, also can influence the work of oil pump, cause inspection pump number of times to increase, therefore applying of this paraffin scraper is restricted.

The purpose of this utility model is to avoid weak point of the prior art, and a kind of economy, suitable self-climbing paraffin scraper product are provided.

Can take following technical scheme to realize purpose, it is made up of wax scraping apparatus and stopping means two large divisions; Stopping means is installed in the place, upper and lower end of sucker rod; Wax scraping apparatus mainly is made of reversing gear bracket and paraffin cutting cylindrical shell; The paraffin cutting cylindrical shell be with tube inner wall be slidingly matched, upper and lower side has the paraffin cutting cutting edge and have the cylindrical member of the flexible drive arm of relative up and down arrangement, it by the flexible drive arm that ratchet is arranged on it up and down between the stopping means, be installed on the sucker rod; Reversing gear bracket is set in the cylindrical shell, and it contacts with the flexible drive arm to be the support portion that is slidingly matched with cylinder inboard wall.Make can be between the two stopping means free device of back and forth creeping, scrape off wax deposition in the oil pipe.

In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.

Fig. 1 is a kind of structural representation of oil well self-climbing paraffin scraper.

Fig. 2 is the paraffin cutting tubular construction schematic diagram that the flexible drive arm is positioned at two ends.

Oil well self-climbing paraffin scraper is made up of two spacing positions and a wax scraping apparatus.Stopping means (II) is installed in the top and bottom portion place of sucker rod respectively, in order to limit the scope of activities of control wax scraping apparatus (I), the stopping means that the stopping means that wax scraping apparatus is run into upper end then alters course down the stepping paraffin cutting, run into lower end then alters course and goes up the stepping paraffin cutting, and its structure can be selected as one sees fit; Wax scraping apparatus is in back and forth operation between stopping means up and down.Wax scraping apparatus (I) mainly is made up of reversing gear bracket (1) and paraffin cutting cylindrical shell (2).The effect of reversing gear bracket (1), the one, the flexible drive arm of change work, the 2nd, the frictional resistance between cylindrical shell and oil pipe is fitted, increased to entad elastic force, support drive arm and the cylindrical shell that overcomes the flexible drive arm; It is set in the cylindrical shell, contacts with the flexible drive arm to be the support portion (10) that is slidingly matched with cylinder inboard wall; Reversing gear bracket can be made integrated member, also can constitute by a plurality of part assembly units, as long as it can guarantee above-mentioned effect, and functional relationship, its shape can be selected as one sees fit, and stretch out outside the paraffin cutting cylindrical shell at its two ends, with energy percussion stopping means.Paraffin cutting cylindrical shell (2), the one, utilize the cutting edge on the cylindrical shell to produce the paraffin cutting effect, the 2nd, utilize the flexible drive arm under the cooperation of reversing gear bracket, to produce unidirectional stepping crawling exercises, the wax deposition in the whole oil pipe is disposed.Two groups of flexible drive arms are arranged in up and down on the cylindrical shell relatively, and shown in accompanying

drawing

1,2, it also can adopt securing member to be with cylindrical shell to fixedly connected; There is ratchet structure at the front end and the back side of each actuating arm, supply " biting " R a T to use respectively; Two groups of flexible drive arms are controlled by reversing gear bracket, and one group of " biting " sucker rod constitutes paraffin cutting power, and another group then is pushed to oil pipe, alternation.

In the accompanying drawing institute example, stopping means (II) is made up of movable sleeve (6), elastic component (7), positioning disk (8) and magnetic (9), and magnetic is installed in the upper surface of positioning disk, and movable sleeve is connected with positioning disk by elastic component.Positioning disk forms a fixed connection by centre bore and sucker rod, and positioning disk can be made into perforated pan (sheet) shape, also can be made into spoke-like, both can guarantee the location, can guarantee the circulation of liquid again, and it can be an overall structure, also can be assembled into by polylith; Magnetic minces, prevents that in order to the absorption iron and steel them from falling into pump and influencing work; Movable sleeve is connected with positioning disk by spring, can make contact when bump of reversing gear bracket guarantee that the reversing gear bracket commutation puts in place.This stopping means work is more effective.The cylindrical shell (2) of wax scraping apparatus (I) be with tube inner wall be slidingly matched, upper and lower side has paraffin cutting cutting edge (4) and have the opening elasticity cylindrical member of the flexible drive arm (3) of relative up and down arrangement, the barrel port place also is provided with guiding tooth (5); Opening elasticity tube can make cylindrical shell shrink or the expanding effect along circumferentially producing, and makes its work more effective; The guiding tooth can guarantee that wax scraping apparatus is more smooth in the seam crossing between oil pipe and oil pipe, and operation is more reliable in oil pipe.

In 1 example of accompanying drawing, reversing gear bracket is positioned at the limes superiors position of wax scraping apparatus, be responsible for one group of descending flexible drive arm and strutted, be responsible for one group of up flexible drive arm and " bite " (pushing down) sucker rod, the cylindrical shell of wax scraping apparatus relies on self elasticity and oil pipe inner arm to fit; When sucker rod is up, up by flexible drive arm band paraffin cutting cylindrical shell, wipe the paraffin on the tube inner wall off.When sucker rod was descending, because expanding, the paraffin cutting cylindrical shell of the outside directive effect of ratchet and cylindrical shell self is motionless on the actuating arm, sucker rod is relative with actuating arm to slide, the while also wipes the paraffin on the sucker rod off, like this wax scraping apparatus step motion that makes progress.Reversing gear bracket up to wax scraping apparatus touches the upper limit device, the obstruction reversing gear bracket continues to move upward, and cylindrical shell moves downward relatively, make and be responsible for one group of descending actuating arm and " bite " (pushing down) sucker rod, be responsible for one group of up actuating arm and strutted, until extreme position, and the change traffic direction is in like manner made downward step motion.Like this, wax scraping apparatus pumps with sucker rod, and reciprocal stepping paraffin cutting.

The relative prior art of the technical program has following advantage: a bite oil well only needs a paraffin scraper, this paraffin scraper to rise, the lower pump operated specific (special) requirements of all not having, when removing pump, still can adopt and play earlier oil pipe, descend beam hanger at last and play earlier beam hanger, the usual manner method of recurrence oil pipe, very convenient, save time and save trouble, no matter be to use from the scene or the aspects such as validity of safe and reliable, the paraffin cutting of work, this device is a kind of economy, suitable paraffin cleaner for oil well.

Claims

1, a kind of oil well self-climbing paraffin scraper, it is made of wax scraping apparatus, it is characterized in that: wax scraping apparatus mainly is made of reversing gear bracket (1) and paraffin cutting cylindrical shell (2), the paraffin cutting cylindrical shell be with tube inner wall be slidingly matched, upper and lower side has paraffin cutting cutting edge (4) and have the cylindrical member of the flexible drive arm (8) of relative up and down arrangement, it by the flexible drive arm that ratchet is arranged on it up and down between the stopping means, be installed on the sucker rod; Reversing gear bracket is set in the cylindrical shell, and it contacts with the flexible drive arm to be the support portion (10) that is slidingly matched with cylinder inboard wall; It also has stopping means (II), and stopping means is installed in the place, upper and lower end of sucker rod.

2, oil well self-climbing paraffin scraper as claimed in claim 1, it is characterized in that: its stopping means (II) is made up of movable sleeve (6), elastic component (7), positioning disk (8) and magnetic (9), magnetic is installed in the upper surface of positioning disk, and movable sleeve is connected with positioning disk by elastic component; The paraffin cutting cylindrical shell (2) of wax scraping apparatus (I) be with tube inner wall be slidingly matched, upper and lower side has paraffin cutting cutting edge (4) and have the opening elasticity cylindrical member of the flexible drive arm (3) of relative up and down arrangement, the barrel port place also is provided with guiding tooth (5).