CN215889983U

CN215889983U - Soft steel wire type scraping device

Info

Publication number: CN215889983U
Application number: CN202121697636.8U
Authority: CN
Inventors: 阿布力米提·阿不都拉; 艾尔肯; 唐宙宁
Original assignee: Xinjiang Zhundong Petroleum Technology Co ltd
Current assignee: Xinjiang Zhundong Petroleum Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-22
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to the technical field of well-flushing tools, in particular to a soft steel wire type scraping device; comprises an outer pipe and an inner pipe; the inner tube is located the outer tube, forms the ring chamber between inner tube and the outer tube, and the fixed compression mounting has at least three connecting piece that is C shape from a left side to the right interval in the ring chamber that inner tube and outer tube formed, and two adjacent connecting pieces stagger mutually, are provided with the mounting hole on the outer tube that corresponds the connecting piece both ends position respectively, and fixed mounting has soft steel wire brush on the mounting hole. The utility model has reasonable and compact structure and convenient use, realizes the thorough cleaning of the inner wall of the oil pipe, the anti-rotation groove of the inner wall of the water distributor, the water nozzle adjusting groove, the movable cylinder and the like by the matching use of the outer pipe, the inner pipe, the connecting piece and the soft steel wire brush, has the characteristics of safety, reliability and thorough cleaning, is convenient to operate, improves the cleaning efficiency, and prevents the problem of repairing the well again in a short period due to the incapability of realizing layered water measurement and adjustment and quantitative layered water injection caused by incomplete descaling.

Description

Soft steel wire type scraping device

Technical Field

The utility model relates to the technical field of well washing tools, in particular to a soft steel wire type scraping device.

Background

The water injection quality of the water injection well directly influences the development effect of the water-flooding oil field, and the well washing of the water injection well is used as a guarantee measure for guaranteeing that the water injection well injects water, and plays an important role in daily maintenance and management of the water injection well. The existing well washing mode adopts a forward washing-backwashing-forward washing mode for a general water injection well, a backwashing-forward washing-backwashing mode for a reverse injection well, and a reverse well washing mode for an underground separate injection well. The well washing technical principle is as follows: the well flushing liquid returned by the oil pipe firstly enters an automatic pressure reduction system to remove solid matters (such as stones, cement blocks and the like) with large particle size, the well flushing liquid pressure is reduced to 0.4MPa to 1.0MPa, and the well flushing liquid enters a two-stage cyclone sand remover after reaching the design pressure of equipment on a vehicle to remove large-particle sediment; then the oil enters a magnetic processor to remove suspended matters containing ferromagnetism, and then enters an inclined plate oil remover to remove most of oil particles in the oil; then entering a walnut shell filter to remove most of oil and suspended matters in the walnut shell filter; finally, the mixture enters a fiber ball filter to remove smaller oil and suspended matters; the treated water enters a clean water tank, and the filtered water in the water tank is conveyed into a wellhead casing of the water injection well by a three-cylinder injection plug pump to form the circulating well washing operation.

In terms of the current well washing mode, the well washing standard is single, the method is general, the well washing mode is lack of pertinence, the well washing time is long, in the well washing construction, only suspended matters in an oil pipe and an oil sleeve annulus are cleaned, dirt on the inner wall of the oil pipe is not thoroughly cleaned, and therefore, the well washing mode has no good adaptability to the well condition of a water injection well and causes low well washing efficiency; although the existing closed washing operation has a good water cleaning effect, the cleaning of various salt crystals and sediments on the inner wall of an oil pipe, a water distributor anti-rotation groove, a water nozzle adjusting groove, a movable cylinder and the like is not thorough (similar to gargling without tooth brushing). The accumulated scale of iron oxide and other substances generated after crystallization and corrosion on the water distributor due to incomplete descaling can cause unsmooth movement of the water nozzle, reduce the success rate of measurement and adjustment, cause larger deviation of injection amount of the water well and influence stable water injection. The service cycle and the well repairing cycle of the underground pipe column are shortened. Descaling is usually carried out by the existing oil pipe scraper, but the existing oil pipe scraper can only scrape the inner wall of an oil pipe and cannot clear sundries such as various salt crystals and sediments remained at the positions of an anti-rotation groove, a water nozzle adjusting groove, a movable cylinder and the like of the inner wall of a water distributor, iron oxide and the like generated after corrosion; when the inner wall of the water distributor is seriously scaled, layered water regulation and quantitative layered water injection cannot be realized, and the well is repaired again in a short period.

Disclosure of Invention

The utility model provides a soft steel wire type scraping device, which overcomes the defects of the prior art and can effectively solve the problems that the well washing efficiency is low, the well is easily repaired again in a short period due to the fact that the well washing method and the oil pipe scraper cannot thoroughly clean dirt on the inner wall of an oil pipe, various salt crystals, sediments and other impurities remained at positions such as an anti-rotation groove, a water nozzle adjusting groove and a movable cylinder on the inner wall of a water distributor cannot be cleaned, and layered water regulation and quantitative layered water injection cannot be realized.

The technical scheme of the utility model is realized by the following measures: a soft wire type scraping device comprises an outer pipe and an inner pipe; the inner tube is located the outer tube, forms the ring chamber between inner tube and the outer tube, and the fixed compression mounting has at least three connecting piece that is C shape from a left side to the right side interval in the ring chamber that inner tube and outer tube formed, and two adjacent connecting pieces stagger mutually, are provided with the mounting hole on the outer tube that corresponds the connecting piece both ends position respectively, and fixed mounting has soft steel wire brush on the mounting hole, and the one end fixed connection that the mounting hole and corresponding position connecting piece were passed to the inner of soft steel wire brush is in the same place.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the above-mentioned still include crossover sub and rotary joint, the right-hand member of outer tube and crossover sub's left end fixed mounting together, crossover sub's right-hand member and rotary joint left end fixed mounting together.

The oscillator is fixedly arranged at the right end of the rotary joint.

The left end of the outer pipe is provided with internal threads or external threads, and the right end of the outer pipe is provided with internal threads or external threads; the outer pipe and the adapter are fixedly installed together through threads, and the adapter and the rotary joint are fixedly installed together through threads.

At least one rivet is fixedly arranged between the outer pipe and the conversion joint.

The connecting piece is a steel wire rope; the soft steel wire brush comprises at least three soft steel wires, and the soft steel wires are different in length.

The utility model has reasonable and compact structure and convenient use, realizes the thorough cleaning of the inner wall of the oil pipe, the anti-rotation groove of the inner wall of the water distributor, the water nozzle adjusting groove, the movable cylinder and the like by the matching use of the outer pipe, the inner pipe, the connecting piece and the soft steel wire brush, has the characteristics of safety, reliability and thorough cleaning, is convenient to operate, improves the cleaning efficiency, and prevents the problem of repairing the well again in a short period due to the incapability of realizing layered water measurement and adjustment and quantitative layered water injection caused by incomplete descaling.

Drawings

FIG. 1 is a schematic sectional view of the preferred embodiment of the present invention in a front view.

The codes in the figures are respectively: the device comprises an outer pipe 1, an inner pipe 2, an annular cavity 3, a connecting piece 4, a mounting hole 5, a soft steel wire brush 6, a conversion joint 7, a rotary joint 8 and an oscillator 9.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The utility model is further described with reference to the following examples and figures:

as shown in fig. 1, the mild steel wire type scraping apparatus includes an outer tube 1 and an inner tube 2; inner tube 2 is located outer tube 1, form annular chamber 3 between inner tube 2 and the outer tube 1, it has at least three connecting piece 4 that is C shape to press from left to right interval fixed mounting in the annular chamber 3 that inner tube 2 and outer tube 1 formed, two adjacent connecting piece 4 stagger mutually, be provided with mounting hole 5 on the outer tube 1 that corresponds 4 both ends positions of connecting piece respectively, fixed mounting has soft steel wire brush 6 on mounting hole 5, the one end fixed connection that mounting hole 5 and corresponding position connecting piece 4 were passed to the inner of soft steel wire brush 6 is in the same place. The distance between the annular cavities 3 can be approximately consistent with the outer diameter of the connecting pieces 4 or slightly smaller, and at least two connecting pieces 4 can be pressed and fixedly arranged on the two sides of the annular cavities 3 in a staggered mode, so that the outer pipe 1 and the inner pipe 2 are fixedly arranged together through the connecting pieces 4; like this, through the cooperation of outer tube 1, inner tube 2, connecting piece 4 and flexible wire brush 6 use, realize the thorough washing to positions such as the anti-rotation groove of oil pipe inner wall, water injection well choke adjustment tank, movable cylinder, have safe and reliable and wash thorough characteristics, made things convenient for the operation, improved cleaning efficiency, prevented to lead to realizing layering measurement and adjustment of water yield and ration layering water injection because of the scale removal thoroughly, cause the problem of this well workover once more in a short time.

The soft steel wire type scraping device can be further optimized or/and improved according to actual needs:

as shown in the attached figure 1, the device also comprises a conversion joint 7 and a rotary joint 8, wherein the right end of the outer pipe 1 and the left end of the conversion joint 7 are fixedly arranged together, and the right end of the conversion joint 7 and the left end of the rotary joint 8 are fixedly arranged together. The adapter 7 and the rotary joint 8 are well known and commonly used; in this way, the adapter 7 functions as a connection, and the rotary joint 8 enables the present invention to rotate during operation, thereby achieving thorough cleaning.

As shown in fig. 1, an oscillator 9 is fixedly mounted on the right end of the rotary joint 8. The oscillator 9 is publicly known in the art; thus, the oscillator 9 can make the utility model oscillate up and down during working, thereby better achieving the effect of thorough cleaning.

As shown in fig. 1, an internal thread or an external thread is arranged at the left end of the outer tube 1, and an internal thread or an external thread is arranged at the right end of the outer tube 1; the outer pipe 1 and the adapter 7 are fixedly installed together by screw threads, and the adapter 7 and the rotary joint 8 are fixedly installed together by screw threads. Thus, the installation and the disassembly are convenient.

At least one rivet is fixedly installed between the outer tube 1 and the crossover joint 7 as needed. Thus, the outer pipe 1 and the adapter 7 are fixedly installed by threads and then fixed by rivets, and the threads are prevented from loosening and being separated in the working process.

According to the requirement, the connecting piece 4 is a steel wire rope; the soft steel wire brush 6 comprises at least three soft steel wires, and the soft steel wires are different in length. The soft steel wires are different in length, namely the soft steel wires are different in length; the soft steel wire brush 6 and the steel wire rope can be integrated, and the two ends of the steel wire rope can be roughened into the soft steel wire brush 6, so that the connection is firmer; because the flexible steel wires have elasticity, the flexible steel wires with different lengths in the flexible steel wire brush 6 can thoroughly clean sediments and the like in oil pipes with different inner diameters, anti-rotation grooves and water nozzle adjusting grooves.

The outer diameter of the outer tube 1 may be 25 mm to 38 mm, and the outer end of the mild steel brush 6 may protrude through the mounting hole 5 by 17 mm to 25 mm, as required. Therefore, the inner diameters of the oil pipe, the anti-rotation groove and the water nozzle adjusting groove can be adjusted, and the cleaning effect is better achieved.

In order to improve the scraping efficiency of the utility model and simultaneously prevent the utility model from being stuck when passing through the water distributor, the size of the utility model can be designed according to actual conditions, and the embodiment 1: (1) the outer diameter of the outer tube 1 can be 25 mm to 38 mm, the inner diameter can be 20mm to 29mm, 80 threading holes with the diameter of 4.0mm can be arranged on the outer tube 1, the vertical distance between the two groups of threading holes is 10mm, and the dislocation angle is 45 degrees. (2) The outer diameter of the inner pipe 2 can be 18mm to 31mm, the inner diameter can be 12mm, and the inner pipe 2 is provided with a water passing channel with the diameter of 12mm, so that the phenomenon that scraped sundries are blocked between the oil pipe and the water distributor channel cannot occur. (3) When the connecting piece 4 is a steel wire rope, the stainless steel wire rope with the diameter of 3.5mm forms an annular cavity 3 between the inner pipe 2 and the outer pipe 1 to be fixed in an encircling way, and the falling phenomenon of the steel wire rope can not occur. (4) The outer end of the soft steel wire brush 6 extends out of the mounting hole by 517 mm to 25 mm, and the soft steel wire brush 6 can scrape and remove scale on the hard scale at the groove part of the inner wall of the oil pipe and the water distributor.

The utility model has the advantages that: 1. the utility model solves the difficult problems which can not be solved by the existing well washing method and the oil pipe scraper, fully embodies the advantages in the actual field use, exerts the advantages, improves the efficiency of layered water injection, prolongs the well repairing period, solves a big problem in the measuring and adjusting process, has very simple and convenient operation, saves a large amount of well washing operation time, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency. 2. The method has no pollution to the environment, conforms to the sustainable development of oilfield development, has low cost, simple and convenient construction and wide application range, and can be comprehensively popularized and applied.

The working process of the utility model is as follows: when the device works, the oscillator 9 is sequentially connected with the balance weight, the rope cap and the steel wire rope of the external lifting part, and then the following operations are carried out: (1) the method comprises the steps of reversely washing a well for 120 minutes by a closed well washing vehicle, then putting the closed well washing vehicle down to about 5 meters below a lowest-layer water distributor, lifting the closed well washing vehicle to 50 meters above the uppermost-layer water distributor, and then putting the closed well washing vehicle down to 5 meters below the lowest-layer water distributor (note that the distance from 50 meters above the uppermost-layer water distributor to 5 meters below the lowest-layer water distributor is repeatedly scraped for at least 20 times, the lifting and putting speed is less than or equal to 50 meters per minute, the scraping times and the well washing discharge capacity of a pump truck are determined according to the pressure change of a winch system, and the pump of the well washing vehicle in the whole scraping process cannot be stopped). (2) After the scraping and descaling of the oil pipe are finished, the oil pipe is lifted up and taken out, another oil pipe is replaced, or the oil pipe is lowered after impurities are cleaned, the well is washed while the oil pipe is lowered, and then the operation (1) is repeated until the oil pipe is thoroughly cleaned. (3) After the scale is completely removed, the utility model is lifted out, the well washing is stopped, the wellhead flow is recovered to the normal injection state, the measuring and adjusting instrument is replaced to switch the water nozzles of the water distributors of each layer section, and the water amount of each layer section is adjusted to the original water amount after the water nozzles are switched smoothly. (4) And (5) after the testing and adjusting instrument is taken out, the well site is restored to the original shape, and relevant responsible persons in the operation area are informed to carry out well switching.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims

1. A soft steel wire type scraping device is characterized by comprising an outer pipe and an inner pipe; the inner tube is located the outer tube, forms the ring chamber between inner tube and the outer tube, and the fixed compression mounting has at least three connecting piece that is C shape from a left side to the right side interval in the ring chamber that inner tube and outer tube formed, and two adjacent connecting pieces stagger mutually, are provided with the mounting hole on the outer tube that corresponds the connecting piece both ends position respectively, and fixed mounting has soft steel wire brush on the mounting hole, and the one end fixed connection that the mounting hole and corresponding position connecting piece were passed to the inner of soft steel wire brush is in the same place.

2. The mild steel wire type scraping apparatus as claimed in claim 1, further comprising an adapter and a rotary joint, a right end of the outer pipe and a left end of the adapter being fixedly attached together, and a right end of the adapter and a left end of the rotary joint being fixedly attached together.

3. The mild steel wire type shaving apparatus according to claim 2, wherein an oscillator is fixedly installed at the right end of the rotary joint.

4. The mild steel wire type scraping apparatus as claimed in claim 3, wherein the outer tube is provided at a left end thereof with internal or external threads, and at a right end thereof with internal or external threads; the outer pipe and the adapter are fixedly installed together through threads, and the adapter and the rotary joint are fixedly installed together through threads.

5. The mild steel wire type scraping apparatus as claimed in claim 4, wherein at least one rivet is fixedly mounted between the outer tube and the adapter.

6. A mild steel wire type scraping apparatus as claimed in claim 1 or 2 or 3 or 4 or 5, characterised in that the connecting member is a steel wire rope; the soft steel wire brush comprises at least three soft steel wires, and the soft steel wires are different in length.