CN210918990U - Rotary spraying descaling wall scraping tool - Google Patents

Abstract

The utility model discloses a wall instrument is scraped in rotatory injection scale removal, connect including upper portion, the center tube, the sleeve, scrape wall sword and bottom cone head, the characteristics of this instrument are that the injection direction is diversified, it still has four 45 and four 45 nozzles in the slant to one side down to one side except having two radial direction nozzles on its sleeve, and sleeve outer wall is inlayed four alloys and is scraped the wall sword, can spray simultaneously and scrape clearance tube column inner wall, 360 rotations of sleeve, thereby realize all-round washing pit shaft, its cone head design ensures that the instrument cluster in the pit has fine trafficability characteristic when meetting circular bead or necking down in the well, this instrument is influenced by debris in the pit for a short time, can effectively guarantee rotatory washing effect in complicated well.

Description

Rotary spraying descaling wall scraping tool

Technical Field

The utility model relates to an oil and gas development field, in particular to rotatory injection scale removal wall scraping tool.

Background

The oil pipe has prominent scale in the water injection pipe column, and the oil pipe has serious scale on the inner wall after long-time use due to poor water quality of water injection or water containing in an oil field and high ion and sand content, so that the water injection or production pressure is reduced, the output rate is reduced, and the serious consequence of blockage is likely to occur along with the extension of the development time; after the old oil field is mined for many times, the stratum is seriously lacked, the solidifying point is higher, the asphaltene and wax contents of crude oil are high, the viscosity of the crude oil is high, and after paraffin removal measures are taken, high-pressure normal-temperature nitrogen can be injected to increase the stratum energy and improve the oil gas yield. The existing wax removal and scale removal tool for the coiled tubing can effectively remove wax precipitated from an oil well, but has the following problems: if the hard wax is sprayed and washed quickly, the wax blocks cannot be broken and scattered, the descending of an oil pipe is affected, if the hard wax is sprayed and descaled in the oil pipe, the water scale on the inner wall of the oil pipe cannot be broken and fallen off due to insufficient spraying impact force, and the descaling effect is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a rotatory spraying scale removal wall scraping tool capable of simultaneously realizing 360 degrees of all-directional rotation spraying scale removal and rotary scraping scale removal is provided.

In order to solve the technical problem, the utility model discloses a technical scheme is: a rotary jetting descaling wall scraping tool comprises an upper joint, a central pipe, a sleeve, a wall scraping cutter and a bottom conical head, wherein the upper joint is provided with a female buckle, the central pipe is positioned at the lower end of the upper joint and integrally formed, the outer diameter of the central pipe is smaller than that of the upper joint, the lower end of the central pipe is provided with a male buckle, the sleeve is sleeved outside the central pipe, the lower end of the central pipe is connected with the bottom conical head through a screw thread, the outer diameter of the sleeve is larger than that of the upper joint and that of the bottom conical head, and the sleeve is clamped between the upper joint and the bottom conical head and can rotate; the outer edge of the upper end surface of the sleeve and the outer edge of the lower end surface of the sleeve are respectively provided with four water holes which form 90-degree directions, alloy nozzles or screwed plugs can be arranged on the water holes, the water holes positioned in the sleeve are obliquely led to the inner wall of the sleeve, the surface of the inner wall of each water hole is of a spiral structure, fluid is ensured to be sprayed out of the sleeve from the nozzles, and the sleeve is driven to rotate and spray up and down water flow in a rotating manner; the middle part of the sleeve is also provided with two water holes along the radial symmetrical direction, the hole diameters of the water holes from inside to outside are reduced, the radial impact force is ensured to be improved when fluid passes through the water holes, the rotating speed of the sleeve is improved, through holes are respectively arranged on the central tube at the positions corresponding to the water holes at the upper part, the middle part and the lower part, so that the water flow in the central tube is sprayed out through the through holes and the water holes to drive the sleeve to rotate; a wall scraping knife is embedded and welded between every two nozzles at the lower part of the outer wall of the sleeve, and the effect of scraping and cleaning the wall in the oil pipe through 360-degree rotation is achieved.

And one side of the bottom conical head fastens the central tube and the bottom conical head through a fastening pin.

The water holes distributed on the upper part and the lower part of the sleeve form an angle of 45 degrees obliquely upwards and an angle of 45 degrees obliquely downwards with the axial direction, and the radial water holes form an angle of 90 degrees with the axial direction.

The wall scraping knife is trapezoidal and made of alloy materials.

The utility model has the advantages that: through evenly distributed's heliciform through-hole on the sleeve, in operation, liquid is from nozzle through-hole both ends blowout, from radial direction, spout the scale removal to the oil pipe inner wall in slant and slant down, and is effectual, and simultaneously, it scrapes the wall sword to have four alloys to inlay at the sleeve outer wall, when spraying through 360 rotations, the scraping clearance to the post inner wall has been realized, make the scale removal more thorough, the scale removal dead angle is avoided appearing, it is single to have solved the injection scale removal, the effect is general scheduling problem, more can satisfy the demand of the interior scale removal of oil field complicated well oil pipe.

Drawings

Fig. 1 is a schematic view of the rotary spray descaling and wall scraping tool of the present invention.

In the figure: 1-upper joint, 2-upper nozzle, 3-sleeve, 4-radial nozzle, 5-wall scraping knife, 6-lower nozzle, 7-fastening pin, 8-bottom conical head, and 9-central tube.

Detailed Description

The invention will be described in further detail with reference to the following drawings and embodiments:

as shown in fig. 1, the utility model discloses a rotatory injection scale removal wall scraping tool, including upper portion joint 1, center tube 9, sleeve 3, wall scraping cutter 5 and bottom cone 8, upper portion joint 1 has the box, center tube 9 is located upper portion joint 1 lower extreme and is formed integrally, the external diameter of center tube 9 is less than the external diameter of upper portion joint 1, the lower extreme of center tube 9 has the pin thread, sleeve 3 overlaps the center tube outside, the center tube lower extreme passes through the screw thread with bottom cone 8 to be connected, the external diameter of sleeve 3 is bigger than the external diameter of upper portion joint 1 and bottom cone 8, make sleeve 3 block between upper portion joint 1 and bottom cone 8, and can rotate around center tube 9; the outer edge of the upper end surface and the outer edge of the lower end surface of the sleeve 3 are respectively provided with four water holes which are mutually 90 degrees, the water holes can be provided with alloy nozzles or screwed plugs, the water holes positioned in the sleeve are obliquely led to the inner wall of the sleeve, the surface of the inner wall of the water holes is of a spiral structure, the fluid is ensured to be sprayed out of the sleeve 3 from the nozzles, and the sleeve 3 is driven to rotate and spray up and down water flow in a rotating way; the middle part of the sleeve 3 is also provided with two water holes along the radial symmetrical direction, the hole diameter of the water holes from inside to outside is reduced, the radial impact force is ensured to be improved when fluid passes through the water holes, the rotating speed of the sleeve 3 is improved, through holes are respectively arranged on the central tube 9 corresponding to the water holes on the upper part, the middle part and the lower part, so that the water flow in the central tube 9 is sprayed out through the through holes and the water holes to drive the sleeve to rotate; a wall scraping knife 5 is embedded and welded between every two nozzles at the lower part of the outer wall of the sleeve, and the effect of scraping and cleaning the wall in the oil pipe through 360-degree rotation is achieved.

One side of the bottom conical head 8 is used for fastening the central tube 9 and the bottom conical head 8 through a fastening pin 7.

The water holes distributed on the upper part and the lower part of the sleeve 3 form an angle of 45 degrees obliquely upwards and downwards with the axial direction, and the radial water holes form an angle of 90 degrees with the axial direction.

The wall scraping knife 5 is trapezoidal and made of alloy materials.

The utility model discloses realize 360 all-round rotation simultaneously and spray scale removal and rotatory scraping scale removal, realize the comprehensive clearance of water injection well oil pipe scale deposit and wax shutoff, can make the adjustment according to actual application condition and demand simultaneously, realize that 45 spray scale removal and radial scale removal in the slant, adopt the end cap to plug up 45 stifled nozzles in the slant, also can realize 45 stifled sprays scraping scale removal and radial scale removal in the slant, 45 stifled nozzles in the slant are plugged up to the end cap, can also realize plugging up a radial nozzle, only with one, scrape the external diameter and begin to reach up to 60mm from 54mm, can satisfy 2-7/8 "oil pipe's demand.

When in use, the upper nozzle 2, the radial nozzle 4 and the lower nozzle 6 are sequentially arranged on the sleeve 3, the upper wall scraping knife 5 is welded in an embedding way, and each sealing ring is arranged; and then the central tube 9 passes through the inner cavity of the sleeve 3 and is connected with the conical head 8 through the fastening pin 7, and the assembly of the tool is finished.

In summary, the present invention is not limited to the above embodiments, and other embodiments can be easily proposed by those skilled in the art within the technical teaching of the present invention, but all such embodiments are included in the scope of the present invention.

Claims (4)

1. A rotary jetting descaling wall scraping tool is characterized by comprising an upper connector (1), a central tube (9), a sleeve (3), a wall scraping knife (5) and a bottom conical head (8), wherein the upper connector (1) is provided with a female buckle, the central tube (9) is positioned at the lower end of the upper connector (1) and integrally formed, the outer diameter of the central tube (9) is smaller than the outer diameter of the upper connector (1), the lower end of the central tube (9) is provided with a male buckle, the sleeve (3) is sleeved outside the central tube, the lower end of the central tube is connected with the bottom conical head (8) through a screw buckle, the outer diameter of the sleeve (3) is larger than the outer diameters of the upper connector (1) and the bottom conical head (8), and the sleeve (3) is clamped between the upper connector (1) and the bottom conical head (8) and can rotate around the central tube (; the outer edge of the upper end surface and the outer edge of the lower end surface of the sleeve (3) are respectively provided with four water holes which form 90-degree directions, alloy nozzles or pipe plugs can be arranged on the water holes, the water holes in the sleeve are obliquely led to the inner wall of the sleeve, the surface of the inner wall of each water hole is of a spiral structure, fluid is guaranteed to be sprayed out of the sleeve (3) from the nozzles, and the sleeve (3) is driven to rotate and spray up and down water flow in a rotating mode; the middle part of the sleeve (3) is also provided with two water holes along the radial symmetrical direction, the hole diameter of the water holes from inside to outside is reduced, the radial impact force is ensured to be improved when fluid passes through the water holes, the rotating speed of the sleeve (3) is improved, through holes are respectively arranged on the central tube (9) corresponding to the water holes at the upper part, the middle part and the lower part, so that the water flow in the central tube (9) is sprayed out through the through holes and the water holes to drive the sleeve to rotate; a wall scraping knife (5) is embedded and welded between every two nozzles at the lower part of the outer wall of the sleeve, and the effect of scraping and cleaning the wall in the oil pipe through 360-degree rotation is achieved.

2. The tool for descaling and scraping the wall according to claim 1, wherein the central tube (9) is fastened to the bottom cone head (8) by a fastening pin (7) on one side of the bottom cone head (8).

3. The tool according to claim 1, wherein the upper and lower portions of the sleeve (3) have perforations angled obliquely upwards at 45 ° and obliquely downwards at 45 ° to the axial direction, and radial perforations are angled 90 ° to the axial direction.

4. The tool according to claim 1, wherein the scraping blade (5) is trapezoidal and made of an alloy material.

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