CN218644263U - Drilling and scraping integrated wall scraper - Google Patents

Abstract

The utility model relates to a bore and scrape integration wall scraping device, including top connection, body and the lower clutch that connects gradually, the body outside is equipped with the blade, the blade passes through retaining ring and locking screw to be fixed on the body, be equipped with the spring between blade and the body. The utility model is simple in operation, will bore and scrape integration wall scraping device and drill bit, instrument such as junk mill makes up to bore and scrapes integration tubular column and down to predetermined well section, the top is driven or the kelly is at the rotary drive drill bit, instrument such as junk mill bores when grinding, drive and bore and scrape integration wall scraping device rotation and clear away the set inside pipe wall mud hardening piece, the cement ring, rust and well cementation residue, hard wax, various salt crystallization and deposit, produced thing such as iron oxide behind perforation burr and the sleeve pipe corrosion, the pit shaft is handled in the realization of one trip, the pipe scraping construction, the site operation progress has been improved greatly, the construction work volume of drilling tool has been reduced down, the well accuse risk that leads to because of frequently getting up a hole has been reduced.

Description

Drilling and scraping integrated wall scraper

Technical Field

The utility model relates to a well drilling borehole operation handles pit shaft equipment field in the petroleum engineering, and more specifically says, relates to a bore and scrape integration wall scraping device.

Background

During the drilling process, the inner wall of the shaft is often adhered by mud hardened blocks, cement sheath, rust and well cementation residues; in oil recovery well workover, the wax and scale are adhered to the well. These conditions can cause the reduction of the inner diameter of the casing, the blockage of various running pipe columns, the corrosion of the inner wall of the casing, and serious accidents and even the early abandonment of oil-water wells.

In recent years, there are various tools and methods for cleaning the inner wall of casing, and the tools and methods are mainly divided into two main categories from the aspect of operation: firstly, the common wall scraper can only be used alone and cannot be combined with tools such as a drill bit and a mill shoe for use, and the operation method not only reduces the construction timeliness but also increases the well control risk of pulling and pulling down the drilling tool by lifting and lowering the drilling tool for pipe scraping; and the non-rotary wall scraper is matched with tools such as a drill bit, a shoe mill and the like for use, but the non-rotary wall scraper and the tools such as the drill bit, the shoe mill and the like separately work when a shaft is treated, the tools such as the drill bit, the shoe mill and the like rotate to drill and grind, and after the operation is finished, the drilling tool is lifted up and lowered down to scrape the pipe.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a bore and scrape integration wall scraping device, can improve the ageing of operation, reduce the well control risk.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a structure bores and scrapes integration wall scraping device, includes top connection, body and the lower clutch that connects gradually, the body outside is equipped with the blade, the blade passes through retaining ring and locking screw to be fixed on the body, be equipped with the spring between blade and the body.

In the above scheme, the two ends of the blade are provided with the bending parts, and the locking screw penetrates through the check ring to be connected with the body.

In the above scheme, the blade is provided with three, along the surface of axis equipartition at the body.

In the above scheme, the spring is a compression spring.

In the above scheme, the upper end of the upper joint is connected with the sleeve.

In the above scheme, the lower end of the lower joint is connected with the drill bit.

Implement the utility model discloses a bore and scrape integration wall scraper has following beneficial effect:

the utility model discloses a bore and scrape integration wall scraping device easy operation, will bore and scrape integration wall scraping device and drill bit, instrument such as junk mill makes up to bore and scrapes the integration tubular column and down to predetermined well section, the top is driven or the kelly is at the rotary drive drill bit, when instruments such as junk mill bore the mill, drive and bore and scrape the integration and scrape the rotatory casing inner wall mud hardening piece of cleaing away of wall scraping device, cement ring, rust and well cementation residue, hard wax, various salt crystallization and deposit, produced thing such as iron oxide behind perforation burr and the casing corrosion, one trip is realized handling pit shaft, scrape the pipe construction, the site operation progress has been improved greatly, the construction work volume of tripping drilling tool has been reduced, the well accuse risk that leads to because of frequent tripping has been reduced.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of the drilling and scraping integrated wall scraper of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the drilling and scraping integrated wall scraper of the utility model comprises an upper joint 1, a body 2 and a lower joint 7 which are connected in sequence. The body 2 outside is equipped with blade 5, and blade 5 passes through retaining ring 3 and locking screw 4 fixes on body 2, is equipped with spring 6 between blade 5 and the body 2, and spring 6 is compression spring 6 in this embodiment, and compression spring 6's elasticity keeps blade 5 and the inseparable laminating of cover inside pipe wall. The upper end of the upper joint 1 is connected with the sleeve, and the lower end of the lower joint 7 is connected with the drill bit.

Furthermore, the two ends of the blade 5 are provided with bending parts, and the locking screw 4 penetrates through the retainer ring 3 to be connected with the body 2. The number of the blades 5 in this embodiment is three, and the blades are uniformly distributed on the surface of the body 2 along the axis.

The utility model discloses the operation process of scraping integration wall scraper construction is as follows:

1) And selecting a proper drilling and scraping integrated wall scraper according to the size of the well hole.

2) The wellbore string is processed in combination according to the design. If the drilling and scraping integrated wall scraper is used independently, the drilling and scraping integrated wall scraper is connected to the lowermost end of a drilling tool and tightened, and then is lowered into a preset position; when the integrated drill/wiper scraper is used together with a tool such as a drill bit or a shoe, the integrated drill/wiper scraper is attached to the upper portion of the tool such as the drill bit or the shoe and is fed to a predetermined position by a drill string.

3) If the drilling and scraping integrated wall scraper is used independently, the drilling and scraping integrated wall scraper is lowered to a preset underground position, a pump is started to circularly open a top drive or a turntable, the drilling and scraping integrated wall scraper slowly lowers and rotates at the same time, the rotating speed is controlled to be 40-60r/min, and the lowering speed of a pipe column is controlled to be 0.1m/s; if the drilling and scraping integrated wall scraper is used together with tools such as a drill bit, a shoe mill and the like, the drilling and scraping integrated wall scraper is lowered to a position 2-3m above a preset position, a pump is started, a top drive or a rotary disc is opened, after an outlet is normal, a pipe column is slowly lowered, and the drilling and scraping operation is carried out by pressurizing 10KN-20KN until a lowering suspended weight does not descend any more. If the resistance is met midway, the hanging weight of the pipe column is reduced by 20-30 KN, the pipe column is stably moved, and the violent and hard pressing is strictly prohibited. If the stable movable pipe column is invalid, analyzing the condition of the well section meeting the resistance or actually measuring and printing to confirm the reason of the resistance, and then performing drilling and scraping operation after repairing.

4) The scraper is moved once every 15min during circulation or standing to prevent drill sticking.

5) The drilling tool is required to be stable, low in speed and strictly forbidden to shake and impact violently. When the drill is tripped down, the well mouth is protected, and all underground falling objects are prevented strictly.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the scope of the present invention, and these forms are all within the protection scope of the present invention.

Claims (6)

1. The utility model provides a bore and scrape integration wall scraping device, its characterized in that, is including top connection, body and the lower clutch that connects gradually, the body outside is equipped with the blade, the blade passes through retaining ring and locking screw to be fixed on the body, be equipped with the spring between blade and the body.

2. The drilling and scraping integrated wall scraper according to claim 1, wherein bent parts are arranged at two ends of the blade, and the locking screw penetrates through the retainer ring to be connected with the body.

3. The integrated drill and scraper wall scraper of claim 1, wherein the number of blades is three, and the blades are uniformly distributed on the surface of the body along the axis.

4. The drill-scraper integrated wall scraper of claim 1, wherein the spring is a compression spring.

5. The integrated drill and scraper wall scraper of claim 1 wherein the upper end of the upper fitting is connected to a bushing.

6. The drill-scraper integrated wall scraper of claim 1, wherein the lower end of the lower joint is connected to a drill bit.

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