CN105201457A - Cleaning tool for outer wall of oil well casing - Google Patents
Cleaning tool for outer wall of oil well casing Download PDFInfo
- Publication number
- CN105201457A CN105201457A CN201510666907.6A CN201510666907A CN105201457A CN 105201457 A CN105201457 A CN 105201457A CN 201510666907 A CN201510666907 A CN 201510666907A CN 105201457 A CN105201457 A CN 105201457A
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- China
- Prior art keywords
- dovetail groove
- oil well
- wall
- casing
- well casing
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Abstract
The invention belongs to the technical field of oil field exploitation, and discloses a cleaning tool for the outer wall of an oil well casing. The cleaning tool comprises a body, wherein the upper part of the body is connected with an upper joint, the lower part of the body is connected with a guide shoe, the body is internally milled with a trapezoid groove and a dovetail groove along the axial direction, the trapezoid groove and the dovetail groove are formed alternately and uniformly distributed along the circumference of the body, a scraper fixed by a leaf spring is installed in the trapezoid groove and a brush component is installed in the dovetail groove. The cleaning tool for the outer wall of the oil well casing fills up the blank of a cleaning tool used outside pipes, and is used for cleaning the outer wall of the oil well casing by rotating downward, and the outer wall of the casing can be efficiently and safely cleaned; on one hand, the cost for cleaning the casing in the process of changing the casing is saved, and on the other hand, downhole drops are avoided, and the unsafety during cleaning the casing while welding the wire brushes in the bailer or the guide shoe is avoided.
Description
Technical field
The invention belongs to oilfield exploitation technical field, specifically, relate to a kind of oil well casing outer wall washing instrument.
Background technology
Along with oil well production is to the later stage, casing corrosion problem more and more annoyings the normal production of oil well, therefore needs to carry out casing replacing operation to the oil well of casing damage.Need to clear up well inner sleeve joint in casing replacing operation, ensure the smooth of tie-back casing and sealing.Owing to there is no special sleeve outer wall cleaning means, the method mainly welding wire brush on dipper or guide shoe adopted at present, under enter sleeve outer wall cleared up.This method needs to process dipper or guide shoe, and operating cost is higher, and safety is not too reliable, down-hole situation can be made complicated, therefore need a kind of instrument cleared up tubing and casing outer wall of specialty if there is phenomenons such as steel wire bristle drop.
Summary of the invention
The present invention provides a kind of special, safety and oil well casing outer wall washing instrument efficiently for solving in known technology the technical problem that exists.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of oil well casing outer wall washing instrument, comprises body; Described body is columnar structured, and its top has been threaded top connection, and its underpart has been threaded guide shoe; Described body interior is axially milled with at least one dovetail groove and at least one dovetail groove, described dovetail groove and described dovetail groove interval arrange and are uniformly distributed along described body circumference, be provided with in described dovetail groove and scrape cutter hub, described cutter hub of scraping is fixed on described dovetail groove by sheet spring, is provided with hairbrush parts in described dovetail groove.
Exntension tubs are connected with between described body and top connection.
Described dovetail groove and described dovetail groove are provided with three.
The invention has the beneficial effects as follows:
The blank of the outer cleaning means of pipe filled up by oil well casing outer wall washing instrument of the present invention, by entering under rotation, oil well casing outer wall is cleaned, the outer wall section of cannula cleaning that can be efficient, safe, save the cost changing cover operation Cleaning Process sleeve pipe on the one hand, on the other hand also can not cause trouble of lost tool in hole, avoid welding wire brush in dipper or guide shoe and carry out the insecurity that sleeve pipe cleaning produces.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil well casing outer wall washing instrument provided by the present invention;
Fig. 2 is the structural representation of body;
Fig. 3 is the structural representation of top connection;
Fig. 4 is the structural representation of exntension tubs;
Fig. 5 is the structural representation of guide shoe.
In figure: 1, top connection; 2, body; 3, hairbrush parts; 4, cutter hub is scraped; 5, guide shoe; 6, sheet spring.
Detailed description of the invention
For summary of the invention of the present invention, feature and effect can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, present embodiment discloses a kind of oil well casing outer wall washing instrument, mainly comprise top connection 1, body 2, guide shoe 5, hairbrush parts 3, scrape cutter hub 4, wherein hairbrush parts 3 and scrape cutter hub 4 and belong to cleaning module.
As shown in Figure 2, body 2 is columnar structured, and its upper and lower jointing adopts special Tr280 × 3-8H/8e.Body 2 bottom connects guide shoe 5, as shown in Figure 5; Body 2 top connects top connection 1, as shown in Figure 3; Top connection 1 onsite application connects employing NC56 button-type jointed rod.Body 2 top also can connect exntension tubs and lengthen, as shown in Figure 4.
As depicted in figs. 1 and 2, body 2 is inner is axially milled with three dovetail grooves for installing cleaning module and three dovetail grooves, and three dovetail grooves and three dovetail groove intervals are arranged, and are uniformly distributed along the circumference of body 2.Be embedded with scraper body 4 in dovetail groove, in dovetail groove, be embedded with hairbrush parts 3.Scraping cutter hub 4 with body 2 is matched in clearance, and scrapes cutter hub 4 rear portion and be provided with a groove, is provided with sheet spring 6 scraping between cutter hub 4 and body 2, makes to scrape cutter hub 4 and operationally can carry out free compensation by this groove.The bristle on hairbrush parts 3 surface, from as flexibility, can be close to casing wall and clean.
Operating principle of the present invention is as follows:
By hairbrush parts 3 with scrape cutter hub 4 to be fixed on body 2 by the mode inserted inner, body 2 bottom connection guide shoe 5, body 2 top (can connect exntension tubs) connects top connection 1 and drilling rod.13-3/8 is entered by under cleaning means " in sleeve pipe and by guide shoe 5 by 13-3/8 " 9-5/8 in sleeve pipe " sleeve pipe is directed in cleaning means; now make hairbrush parts 3 by rotation and scrape cutter hub 4 couples of 9-5/8 " iron rust of sleeve outer wall and dirt clear up, and the mode by entering under circulation limit, limit, and by the carrying capacity of liquid, the iron rust cleaned out and dirt are washed out.Oil well casing outer wall washing tool construction of the present invention is simple, low cost of manufacture, execute-in-place safe and convenient.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make the concrete conversion of a lot of form, these all belong within protection scope of the present invention.
Claims (3)
1. an oil well casing outer wall washing instrument, comprises body; It is characterized in that, described body is columnar structured, and its top has been threaded top connection, and its underpart has been threaded guide shoe; Described body interior is axially milled with at least one dovetail groove and at least one dovetail groove, described dovetail groove and described dovetail groove interval arrange and are uniformly distributed along described body circumference, be provided with in described dovetail groove and scrape cutter hub, described cutter hub of scraping is fixed on described dovetail groove by sheet spring, is provided with hairbrush parts in described dovetail groove.
2. a kind of oil well casing outer wall washing instrument according to claim 1, is characterized in that, be connected with exntension tubs between described body and top connection.
3. a kind of oil well casing outer wall washing instrument according to claim 1, it is characterized in that, described dovetail groove and described dovetail groove are provided with three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666907.6A CN105201457A (en) | 2015-10-15 | 2015-10-15 | Cleaning tool for outer wall of oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666907.6A CN105201457A (en) | 2015-10-15 | 2015-10-15 | Cleaning tool for outer wall of oil well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201457A true CN105201457A (en) | 2015-12-30 |
Family
ID=54949370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510666907.6A Pending CN105201457A (en) | 2015-10-15 | 2015-10-15 | Cleaning tool for outer wall of oil well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627757A (en) * | 2020-11-27 | 2021-04-09 | 中国海洋石油集团有限公司 | Casing pipe outer wall grinding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2347442A (en) * | 1999-03-03 | 2000-09-06 | Pilot Drilling Control Ltd | Casing scraper |
| CN201843551U (en) * | 2010-08-25 | 2011-05-25 | 贵州高峰石油机械股份有限公司 | Milling scrap iron collector |
| CN203856438U (en) * | 2014-04-25 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Casing grinding and scrubbing tool |
| CN204113225U (en) * | 2014-09-09 | 2015-01-21 | 中国石油天然气股份有限公司 | Spring type casing pigging scraper |
| CN104499995A (en) * | 2014-12-29 | 2015-04-08 | 贵州高峰石油机械股份有限公司 | Method and device for cleaning well bottom old casing tie-back portion periphery |
-
2015
- 2015-10-15 CN CN201510666907.6A patent/CN105201457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2347442A (en) * | 1999-03-03 | 2000-09-06 | Pilot Drilling Control Ltd | Casing scraper |
| CN201843551U (en) * | 2010-08-25 | 2011-05-25 | 贵州高峰石油机械股份有限公司 | Milling scrap iron collector |
| CN203856438U (en) * | 2014-04-25 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Casing grinding and scrubbing tool |
| CN204113225U (en) * | 2014-09-09 | 2015-01-21 | 中国石油天然气股份有限公司 | Spring type casing pigging scraper |
| CN104499995A (en) * | 2014-12-29 | 2015-04-08 | 贵州高峰石油机械股份有限公司 | Method and device for cleaning well bottom old casing tie-back portion periphery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627757A (en) * | 2020-11-27 | 2021-04-09 | 中国海洋石油集团有限公司 | Casing pipe outer wall grinding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170210 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Applicant after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Energy Technology Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |
|
| WD01 | Invention patent application deemed withdrawn after publication |