CN201826811U

CN201826811U - Drifting scraping device

Info

Publication number: CN201826811U
Application number: CN201020563360XU
Authority: CN
Inventors: 谢照宽; 刘建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-12
Filing date: 2010-10-12
Publication date: 2011-05-11
Anticipated expiration: 2020-10-12

Abstract

The utility model belongs to the field of oil field workover treatment, which provides a drifting scraping device. The device is mainly characterized in that the existing drift size gauge tools and scrapers are improved; an upper connector is connected with the upper end of an outer housing; a drift size gauge tool is arranged at the lower end of the outer housing; a casting plugging type ball is arranged at the upper opening of a central tube in the outer housing; a positioning pin is arranged between the outer housing and the central tube; a scraping piece is arranged corresponding to a scraping opening; and a transverse return spring and a longitudinal return spring are connected with the scraping piece. The device not only combines the drift size gauge tool and the scraping piece into a whole, but also can ensure that the scraper is repositioned, compared with the traditional equipment, one installation and one descending can realize two types of operation, the well workover cost is reduced, the operation efficiency is improved, the labor intensity is reduced, the workover process is quickened, and the device is beneficial to improvement of the oil recovery production time rate.

Description

A kind of drifting device for scraping

Technical field

The utility model belongs to the oil well repairing operation field, relates to a kind of drifting device for scraping.

Background technology

In the oilfield workover treatment at present, in order to remove dirts such as cement in the oil well casing, wax deposition, the first drifting of many employing drift size gauge tools, mediation bulk foreign material adopt the fouling of scraper scraping internal surface of sleeve pipe again, owing to adopt two kinds of equipments, need the branch two procedures to carry out, it is complicated to work not only, and labour intensity is big, and influences job scheduling.

Summary of the invention

The designer is in the activity of being engaged in oil well underground work for many years, find that existing workover rig service to oil well equipment exists certain defective, through constantly exploring and improving repeatedly, purpose is to provide a kind of drifting device for scraping, can integrate drifting and scraping function, reduce number of times is installed, reduce labour intensity, improve operating efficiency.

Technical solution adopted in the utility model is a kind of drifting device for scraping of design, its structure comprises: overcoat, outer set upper side connects top connection, be connected with drift size gauge tool in the overcoat lower end, central tube is set in overcoat, at the central tube plug-injection type steel ball of establishing suitable for reading, top is provided with joint ring between overcoat and central tube, alignment pin, outer putting below alignment pin offered locating hole, offers at least one scraping mouth on the coat, and corresponding scraping mouth is provided with to scrape between overcoat and central tube and chips, scrape chip with central tube between scrape the horizontal return spring of chipping with scraping that chipping links to each other and be provided with, and scrape the chipping setting that links to each other and scrape vertical return spring of chipping.

In order to improve scraping efficient, the laying of staggering mutually on the coat of a plurality of scraping mouths.

During use, top connection and oil pipe lower end are fastened and connected, drift size gauge tool is lowered to this device down in oil well casing.Actuating oil pipe upper end, drift size gauge tool work, it is interior than bigger material to remove oil well casing, implements the drifting operation; After the drifting operation, cast steel ball in oil pipe, it is suitable for reading that the steel ball pressure gets lodged in central tube, utilize the external force mode to make that scraping chips moves down, move on in the scraping mouth when scraping to chip, under horizontal return spring effect, scraping chips stretches out the scraping mouth automatically, alignment pin slips into locating hole simultaneously, make and scrape the location of chipping, the actuating oil pipe is scraped the work of chipping, enforcement is removed the fouling on the long-pending inwall to the scraping of oil well casing inwall; After scraping finishes, utilize instrument that alignment pin is withdrawed from locating hole, scrape the retraction automatically of chipping, this device is proposed oil well casing, finish this workover treatment.Well workover next time still can continue to use, and is repeatedly used.

The utility model is owing to take technique scheme and measure, existing drift size gauge tool, scraper are improved, independent drift size gauge tool is connected as one with scraping to chip, made again that scraping chips resets, accomplish that this device once mounting once goes into the well, can realize two kinds of operations, reduce the number of times of installing repeatedly and go into the well, reduce operating cost, improve operating efficiency, reduce labor intensity, accelerate the well workover process, help recovering the oil and produce.After this well workover was intact, next well workover still can continue to re-use.

Description of drawings

Fig. 1 represents the structure cross-sectional schematic of a kind of drifting device for scraping of the utility model.

The specific embodiment

Reach embodiment in conjunction with the accompanying drawings, further specify the concrete structure of a kind of drifting device for scraping of the utility model.

The embodiment of a kind of drifting device for scraping of the utility model, referring to Fig. 1, its structure comprises: overcoat 10, top connection 1, drift size gauge tool 17, joint 15, central tube 9, steel ball 2, joint ring 3, sealing ring 4, locating ring 5, alignment pin 6, retainer spring 7, locating hole 8, scraping mouth 14 is scraped and is chipped 12, securing member 11, laterally return spring 13, vertically return spring 16.Connect top connection 1 in overcoat 10 upper ends, connect drift size gauge tool 17 in overcoat 10 lower ends by joint 15, central tube 9 is set in overcoat 10, at the central tube 9 plug-injection type steel balls 2 of establishing suitable for reading, joint ring 3 is established on top between overcoat 10 and central tube 9, sealing ring 4 and locating ring 5, alignment pin 6 and retainer spring 7 are set in locating ring 5, put outside below alignment pin 6 and offer locating hole 8, on overcoat 10, offer at least one scraping mouth 14, the laying of staggering of 3 scraping mouths 14,14.1,14.2, corresponding 3 scraping mouths, between overcoat 10 and central tube 9, scrape and chip 12 by securing member 11 setting, scrape chip 12 with central tube 9 between be provided with and scrape the horizontal return spring 13 of chipping, 12 be connected between central tube 9 and the joint 15 setting mutually and scrape vertical return spring 16 of chipping with scraping to chip.

Claims

1. drifting device for scraping, comprise overcoat, outer set upper side connects top connection, it is characterized in that: be connected with drift size gauge tool in the overcoat lower end, central tube is set in overcoat, at the central tube plug-injection type steel ball of establishing suitable for reading, top is provided with joint ring between overcoat and central tube, alignment pin, outer putting below alignment pin offered locating hole, offers at least one scraping mouth on the coat, and corresponding scraping mouth is provided with to scrape between overcoat and central tube and chips, scrape chip with central tube between scrape the horizontal return spring of chipping with scraping that chipping links to each other and be provided with, and scrape the chipping setting that links to each other and scrape vertical return spring of chipping.

2. a kind of drifting device for scraping as claimed in claim 1 is characterized in that the laying of staggering mutually on the coat of described a plurality of scraping mouth.