CN210685940U - Scraper for inner wall of underground casing - Google Patents

Scraper for inner wall of underground casing Download PDF

Info

Publication number
CN210685940U
CN210685940U CN201921712087.XU CN201921712087U CN210685940U CN 210685940 U CN210685940 U CN 210685940U CN 201921712087 U CN201921712087 U CN 201921712087U CN 210685940 U CN210685940 U CN 210685940U
Authority
CN
China
Prior art keywords
scraper
pipe
casing
compression spring
heating block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201921712087.XU
Other languages
Chinese (zh)
Inventor
张峰
王锡军
王富满
李生德
苏宁
魏庆霞
杨永祥
王剑泳
聂攀攀
Original Assignee
张峰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 张峰 filed Critical 张峰
Priority to CN201921712087.XU priority Critical patent/CN210685940U/en
Application granted granted Critical
Publication of CN210685940U publication Critical patent/CN210685940U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a scraper for the inner wall of a downhole casing, which comprises a rotary pipe, wherein two ends of a rotary rod are respectively fixedly connected with a flange and an upper joint, the flange is detachably connected with a lower joint through a bolt, the outer side of the rotary pipe is provided with a ring groove, the bottom end of the ring groove is fixedly connected with one end of a compression spring, the other end of the compression spring is fixedly connected with a scraping plate, the upper end of the scraping plate is fixedly connected with a plurality of groups of scrapers, the outer side of the rotary pipe, which is positioned at the upper end of the ring groove, is sheathed with a heating block, the compression spring can ensure the full contact between the scrapers and the inner wall of the casing, thereby ensuring that the scrapers can effectively remove foreign matters on the inner wall of the casing, when hard wax or salt scale is encountered, the hard wax or salt scale on the inner wall of the casing can be, the drill bit is smooth and clean, and other downhole tools such as a packer and the like can be smoothly put in after the drill bit is taken out.

Description

Scraper for inner wall of underground casing
Technical Field
The utility model relates to a drilling engineering technical field, concretely relates to casing inner wall scraper in pit.
Background
The drilling of wells from the ground by mechanical equipment or manpower is called drilling, which generally refers to the engineering of drilling boreholes and large-diameter water supply wells for exploring or developing liquid and gaseous minerals such as oil, natural gas and the like, the drilling of wells is widely applied in national economic construction, the drilling of wells is widely performed in oil (gas) fields in China at present, the drilling of wells is mainly performed by using a rotary table drill, the main equipment is provided with a derrick, an operation platform, a diesel engine, a drilling machine, a drilling tool, a slurry pump, a generator, test equipment, a fuel oil tank, a boiler and the like, the drilling diameter and the depth are large depending on the drilling application and the mineral burial depth and the like, the drilling of oil, natural gas and underground water is mainly performed by ① acquiring underground physical data, namely cores, rock cuttings, liquid samples, gaseous samples and the like from well drilling, ② is used as a geophysical well logging channel, acquiring data of various geophysical fields of rock and mineral layers, ③ is used as a manual channel for observing the dynamic conditions of underground water and geological strata, ④ is used for exploring, mining and developing underground water drilling, geological exploration and rock, drilling are generally divided into drilling well drilling, water drilling, rock breaking and rock breaking are performed from ground, ground drilling.
In the process of well drilling and completion construction, the original underground casing and the casing which is put into the well are overlapped more, and cement slurry is required to be sealed, in order to improve the well cementation quality of the cement slurry, the scraper is often put into the well to carry out inner wall cleaning operation on the technical casing which is already put into the well, the intersection strength of the cement slurry and the inner wall of the casing is improved, and meanwhile, the inner wall of the original casing cannot be damaged, so that the scraper which is put into the casing before well cementation construction scrapes the inner wall, and mud cakes and rock debris adhered to the inner wall of the casing are removed.
Common tools for scraping the pipe are a milling cone and a pipe scraper, the milling cone is not widely used because the milling cone easily causes certain damage to the sleeve, and the pipe scraping efficiency is low because the existing pipe scraper is not enough in blade material, less in blade, short in service life and the like; in addition, some existing scrapers adopt a sizing structure, cannot directly enter a sleeve with thick dirt, and can also cause the problem of being clamped in the sleeve during scraping.
Based on this, the utility model designs a casing inner wall scraper in pit to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model has the main purpose of overcoming at least one defect in the prior art and providing a scraper for the inner wall of an underground casing pipe, which solves the problem of low pipe scraping efficiency caused by insufficient material of blades, fewer blades, short service life and the like of the prior pipe scraper in the background art; in addition, some existing scrapers adopt a sizing structure, cannot directly enter a sleeve with thick dirt, and can also cause the problem of being clamped in the sleeve during scraping.
In order to realize the technical scheme, the utility model discloses a following technical scheme:
the utility model provides a casing inner wall scraper in pit, includes rotatory pipe, rotary rod both ends difference fixedly connected with flange and top connection, the flange passes through the bolt can be dismantled and connects in the bottom connection, the ring channel has been seted up in the rotatory outside of tubes, ring channel bottom fixed connection is in compression spring's one end, compression spring's other end fixed connection is in scraping the board, scrape board upper end fixedly connected with multiunit scraper, the upper end outside cover that rotatory pipe is located the ring channel is equipped with the heating block, rotatory pipe is located the heating block upper end outside fixedly connected with and rights the piece.
Preferably, the outer side of one end of the lower joint, which is far away from the rotating pipe, is provided with a thread.
Preferably, the scraping plate is inclined at an angle of 18-23 degrees.
Preferably, the ring channel both ends all are equipped with the slide rail, scrape the equal fixedly connected with slide rail of board both ends downside and mutually support the slider.
Preferably, a storage battery is arranged in the rotating pipe and is electrically connected to the heating block through a lead.
Preferably, the blade surface of the scraper is embedded with diamond.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a compression spring can guarantee scraper and inside pipe wall's abundant contact to ensure that the scraper can effectively clear away the foreign matter on the inside pipe wall, when meetting harder hard wax or salt dirt, accessible heating block heats inside pipe wall's hard wax or salt dirt, the scraping of the blade of being convenient for, the effect of scraping the ware has been guaranteed more, furthermore, the scraper is whole to be spiral structure, can carry out annular scraping to the intraductal with the sleeve pipe contact during scraping, scrape efficiently, it is neat and clean, can go into other downhole tools such as packer smoothly after the brill.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner structure of the annular groove in FIG. 1 according to the present invention;
fig. 3 is a schematic view of the connection structure of the heating block in fig. 1 according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-rotating pipe, 2-flange, 3-upper joint, 4-lower joint, 5-annular groove, 6-compression spring, 7-scraping plate, 8-scraper, 9-heating block, 10-righting block, 11-screw thread, 12-slide rail, 13-slide block and 14-storage battery.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Please refer to fig. 1-3, the utility model relates to a downhole casing inner wall scraper, including rotatory pipe 1, 1 both ends of rotary rod are fixedly connected with flange 2 and top connection 3 respectively, flange 2 can dismantle through the bolt and connect in bottom connection 4, ring channel 5 has been seted up in the rotatory 1 outside of pipe, 5 bottom fixed connection of ring channel are in compression spring 6's one end, compression spring 6's other end fixed connection is in scraping board 7, scrape board 7 upper end fixedly connected with multiunit scraper 8, the upper end outside cover that rotatory pipe 1 is located ring channel 5 is equipped with heating block 9, rotatory pipe 1 is located heating block 9 upper end outside fixedly connected with righting block 10.
Wherein, the one end outside of the rotatory pipe 1 is kept away from to the lower clutch is equipped with screw thread 11, and screw thread 11 can be used to connect the drill bit of different models, convenient to detach and installation. The scraping plate 7 is arranged obliquely, the inclination angle is 18-23 degrees, and the grinding resistance is small at the angle, so that the cleaning of the inner wall of the sleeve is facilitated. The annular groove 5 both ends all are equipped with slide rail 12, and the equal fixedly connected with slide rail 12 slider 13 of mutually supporting of scraping board 7 both ends downside, slider 13 and slide rail 12's interconnect can be injectd scraping board 7's position, prevent the skew, make to scrape the clearance effect better. The storage battery 14 is arranged in the rotating pipe 1, the storage battery 14 is electrically connected to the heating block 9 through a lead, and the storage battery 14 can provide electric energy for the heating block 9. The blade surface of the scraper 8 is embedded with diamonds, and the diamonds can enhance the strength of the scraper 8 and prevent cracking.
One specific application of this embodiment is: during the use, the drilling tool of different models is connected to accessible screw thread 11, in order to satisfy the sleeve pipe of different models, after fixed the completion, put into the sleeve pipe with the sleeve pipe scraper again, at this moment, compression spring 6 provides elasticity, the scraping plate 7 and the scraper 8 of the upper end that make move up, can guarantee the abundant contact of scraper 8 and inside pipe wall, thereby ensure that scraper 14 can effectively clear away the foreign matter on the inside pipe wall, the rotatory pipe 1 of sleeve pipe scraper is rotatory along the drill post when the drill bit advances the chi, scraper 8 produces the friction with the wall of a well, it clears up to follow the drill post and cut the wall of a well attachment along advancing the chi, when meetting harder hard wax or salt deposit, accessible heating block 9 heats the hard wax or the salt deposit of inside pipe wall, be convenient for scraper 8 to scrape, the effect of scraping of scraper has been guaranteed more, it clears up in advance to hold up piece 10 to the bold attachment of inside pipe wall to lead to the clear up simultaneously, can reduce the resistance when scraper 8 clears up the pipe wall and overcome and lead to too big 8 elastic deformation because of scraper because The life problem is solved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. A downhole casing inner wall scraper comprising a rotating tube (1), characterized in that: rotatory pipe (1) both ends are fixedly connected with flange (2) and top connection (3) respectively, flange (2) can be dismantled through the bolt and connect in lower clutch (4), ring channel (5) have been seted up in rotatory pipe (1) outside, ring channel (5) bottom fixed connection is in the one end of compression spring (6), the other end fixed connection of compression spring (6) is in scraping board (7), scrape board (7) upper end fixedly connected with multiunit scraper (8), the upper end outside cover that rotatory pipe (1) is located ring channel (5) is equipped with heating block (9), rotatory pipe (1) is located heating block (9) upper end outside fixedly connected with and rights piece (10).
2. The scraper of claim 1, wherein: and a thread (11) is arranged on the outer side of one end of the lower joint, which is far away from the rotating pipe (1).
3. The scraper of claim 1, wherein: the scraping plate (7) is arranged obliquely, and the inclination angle is 18-23 degrees.
4. The scraper of claim 1, wherein: both ends of the annular groove (5) are respectively provided with a sliding rail (12), and the lower sides of both ends of the scraping plate (7) are respectively fixedly connected with a sliding block (13) with the sliding rails (12) matched with each other.
5. The scraper of claim 1, wherein: the rotary tube (1) is internally provided with a storage battery (14), and the storage battery (14) is electrically connected to the heating block (9) through a lead.
6. The scraper of claim 1, wherein: diamonds are embedded on the knife surface of the scraper (8).
CN201921712087.XU 2019-10-14 2019-10-14 Scraper for inner wall of underground casing Expired - Fee Related CN210685940U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921712087.XU CN210685940U (en) 2019-10-14 2019-10-14 Scraper for inner wall of underground casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921712087.XU CN210685940U (en) 2019-10-14 2019-10-14 Scraper for inner wall of underground casing

Publications (1)

Publication Number Publication Date
CN210685940U true CN210685940U (en) 2020-06-05

Family

ID=70885947

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921712087.XU Expired - Fee Related CN210685940U (en) 2019-10-14 2019-10-14 Scraper for inner wall of underground casing

Country Status (1)

Country Link
CN (1) CN210685940U (en)

Similar Documents

Publication Publication Date Title
CN103982163B (en) A kind of ocean gas hydrate individual well blood pressure lowering mining system and method
AU2014295717B2 (en) Anchoring and anti-blocking drill rod for coal mine floor
RU183760U1 (en) Swivel rig
CN105041255A (en) Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool
CN201826811U (en) Drifting scraping device
CN105604523A (en) Method for improving pipe scraper and pipe scraper
WO2013178012A1 (en) Method for fluid carriage in deep-seam coal hydraulic mining
CN210685940U (en) Scraper for inner wall of underground casing
CN103362473A (en) Graded variable density well cementation technology
CN205990880U (en) A kind of high-pressure water jet rock-soil layer Counterboring apparatus
CN202108446U (en) Locking and unlocking device of sampling tube in hollow drill pipe
CN207144884U (en) One kind is oriented to internal cutting segmentation junk mill
CN203499632U (en) Small casing pipe suspending repair process tubular column of casing damage horizontal well
CN203603815U (en) Through scraping integration down well equipment
CN204609874U (en) Sampler
CN102011584A (en) Rock powder extractor
CN110685629B (en) Tool for cleaning and fishing small-diameter underground rock slag in deep well section
CN207296967U (en) A kind of telescopic tube scraping cleaning means
CN214943979U (en) Drilling machine with direction conversion function
CN104165026A (en) Seismic exploration composite drilling tool and well drilling method
CN208650832U (en) A kind of new petroleum drill machine cleaning equipment
CN105089505A (en) Efficient drill cement tool
CN212535569U (en) Outdoor rig is drainage device for probing
CN206903614U (en) A kind of silt particle fishing device of hydraulic-driven
CN211524730U (en) Drill bit fixing device for petroleum drilling

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
DD01 Delivery of document by public notice

Addressee: Zhang Feng

Document name: Notice of termination of patent right

DD01 Delivery of document by public notice
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200605

Termination date: 20201014