CN104775782A - Cleaning structure of well wall coring instrument - Google Patents
Cleaning structure of well wall coring instrument Download PDFInfo
- Publication number
- CN104775782A CN104775782A CN201510065259.9A CN201510065259A CN104775782A CN 104775782 A CN104775782 A CN 104775782A CN 201510065259 A CN201510065259 A CN 201510065259A CN 104775782 A CN104775782 A CN 104775782A
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- CN
- China
- Prior art keywords
- brush
- core
- coring
- piston rod
- cleaning
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
Abstract
The invention discloses a cleaning structure of a well wall coring instrument. The cleaning structure comprises a coring instrument body, and a coring drill bit arranged at the front end of the coring instrument body, wherein a core pushing piston rod is arranged in the coring instrument body, and is coaxial with a coring hole of the coring drill bit; a first cleaning brush is arranged at the front end of the core pushing piston rod, and can be pushed by the core pushing piston rod to enter the coring hole of the coring drill bit; and the structure can clean the coring drill bit to prevent the coring drill bit from being bonded.
Description
Technical field
The present invention relates to a kind of cleaning structure, particularly relate to a kind of cleaning structure of side-wall core extractor.
Background technology
Current side-wall core extractor is when coring, hollow shaft hydraulic motor drives drill bit extension bar and coring bit to carry out coring, when completing coring, hollow shaft hydraulic motor carries drill bit extension bar and coring bit is recovered in instrument, if get core success, getting in core bore of coring bit carries cylindrical rock core, side-wall core extractor is got in core work progress at the scene, instrument is once gone into the well and coring quantity can be reached 60, but in actual coring process, being difficult to once goes into the well reaches ideal and gets core quantity, main cause is to get coring bit in core process and sticky boring easily occurs (is getting in core process, the phenomenon that coring bit is wrapped by down-hole slurry, be commonly called as sticky boring), and sticky degree of boring increases gradually with the increase of getting core quantity, getting in core work progress, particularly in the hole condition that used mud viscosity is larger, the frequency of getting the sticky brill of generation in core process is very high, getting in core process, once there is sticky boring, when getting core, drill bit institute consumed power significantly increases, gets core speed and significantly reduce, get core and become rate significantly to reduce, and the risk that card met by instrument in down-hole simultaneously significantly raises.
Summary of the invention
The object of the invention is to, provide a kind of cleaning structure of side-wall core extractor, this structure can be cleaned coring bit, avoids coring bit that sticky boring occurs.
The technical solution adopted in the present invention is, a kind of cleaning structure of side-wall core extractor, comprise coring apparatus body and be arranged on the coring bit of described coring apparatus body front end, be provided with in described coring apparatus body and push away core piston rod, described push away core piston rod and described coring bit to get core bore coaxial, the described core piston rod front end that pushes away is provided with the first cleaning brush, described first cleaning brush described push away the promotion of core piston rod under can enter the getting in core bore of described coring bit.
Preferably, described coring apparatus body front end is provided with rotating output shaft, described rotating output shaft is fixed with the second cleaning brush, described second cleaning brush can under the drive of described rotating output shaft with the wall contacts of described coring bit.
Preferably, described in push away core piston rod front end be provided with and push away core print, push away core print described in described first cleaning brush is arranged on and describedly to push away between core piston rod.
Preferably, described second cleaning brush comprises the connecting hole of stainless steel brush and the brush holder lateral vertical with described stainless steel brush, and described connecting hole and described rotating output shaft are fixed.
Preferably, described first cleaning brush comprises cylindrical brush and is arranged on the connector at described cylindrical brush two ends, connector and the described core piston rod that pushes away of described cylindrical brush one end are fixed, and connector and the described core print that pushes away of the described cylindrical brush other end are fixed.
Preferably, the external diameter of described cylindrical brush is greater than the internal diameter that core bore got by described coring bit.
Preferably, the rear end of described coring bit is connected with drill bit extension bar and hollow shaft hydraulic motor in turn, the endoporus of described drill bit extension bar and hollow shaft hydraulic motor and described coring bit to get core bore coaxial, described first cleaning brush can enter the endoporus of described drill bit extension bar and hollow shaft hydraulic motor respectively.
Preferably, the brush surface indentation of described first cleaning brush.
Preferably, push away core piston rod described in and be provided with displacement transducer.
The invention has the beneficial effects as follows:
1, be provided with the first cleaning brush with the core piston rod front end that pushes away of getting core bore coaxial of coring bit, this first cleaning brush can enter getting in core bore of coring bit under the drive pushing away core piston rod, and can move back and forth getting in core bore, cleans bit inner surface; First cleaning brush can stop at and get in core bore simultaneously, makes coring bit High Rotation Speed, utilizes the relative rotary motion of the first cleaning brush and coring bit, clean drill bit internal, avoids coring bit inside to bond.
2, in the outside of coring bit, the front end of coring apparatus body is provided with the second cleaning brush, second cleaning brush can rotate under the drive of rotating output shaft, until the brush surface of the second cleaning brush and the wall contacts of coring bit, by coring bit High Rotation Speed, second is utilized to scrub the relative rotary motion with coring bit outer wall, bit exterior is cleaned, avoids coring bit to bond.
3, the core piston rod that pushes away in the present invention is provided with displacement transducer, and this displacement transducer can detect the shift position of the first cleaning brush pushed away on core piston rod.
The brush surface indentation of the first cleaning brush 4, in the present invention, is convenient to the first cleaning brush and cleans the mud on coring bit inwall.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the sectional view at B-B place in Fig. 1;
Fig. 3 is the structural representation of the present invention first cleaning brush;
Fig. 4 is the structural representation of the present invention second cleaning brush.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined mutually.
As shown in Figure 1, a kind of cleaning structure of side-wall core extractor, comprise coring apparatus body 9 and be arranged on the coring bit 6 of coring apparatus body 9 front end, coring bit 6 is hollow diamond drilling bit, be provided with in it and get core bore, drill bit extension bar 5 and hollow shaft hydraulic motor 4 is connected with in turn in the rear end of coring bit 6, the endoporus of described drill bit extension bar 5 and hollow shaft hydraulic motor 4 and described coring bit 6 to get core bore coaxial, be provided with in the cavity of described coring apparatus body 9 and push away core piston rod 1, push away core piston rod 1 and described coring bit 6 to get core bore coaxial, the one end pushing away core piston rod 1 is connected with hydraulic cylinder, hydraulic cylinder can drive and push away core piston rod 1 and carry out reciprocal straight-line displacement, be provided with at the other end pushing away core piston rod 1 and push away core print 3, be provided with the first cleaning brush 2 pushing away core print 3 and push away between core piston rod 1, in the present invention, another embodiment is, directly can be provided with the first cleaning brush 2 at the other end pushing away core piston rod 1, first cleaning brush 2 can get core bore in turn through hollow shaft hydraulic motor 4 endoporus, drill bit extension bar 5 endoporus and coring bit 6 under the drive pushing away core piston rod 1, and can clean the core bore of getting of hollow shaft hydraulic motor 4 endoporus, drill bit extension bar 5 endoporus and coring bit 6.
As shown in Figure 2, in the front end of coring apparatus body 9, the outside of coring bit 6 is provided with rotating output shaft 8, rotating output shaft 8 one end is connected with hydraulic cylinder, the other end is fixed with the second cleaning brush 7, second cleaning brush 7 can rotate under the drive of rotating output shaft 8, until the second cleaning brush 7 contacts with the outer wall of coring bit 6.
As shown in Figure 3, the first cleaning brush 2 in the present invention, comprise cylindrical brush 201 and be arranged on the connector 202 at described cylindrical brush 201 two ends, the connector 202 of described cylindrical brush one end is fixed with the described core piston rod 1 that pushes away, the connector 202 of the described cylindrical brush other end is fixed with the described core print 3 that pushes away, the external diameter of cylindrical brush 201 is greater than the internal diameter that core bore got by described coring bit 6, and the preferred indentation in the surface of this cylindrical brush 201, be convenient to clean in coring bit 6.
As shown in Figure 4, the second cleaning brush 7 in the present invention, comprise the connecting hole 702 of stainless steel brush 701 and the brush holder lateral vertical with described stainless steel brush 701, described connecting hole 702 is fixed with described rotating output shaft 8, stainless steel brush 701 can be rotated around rotating output shaft 8, when cleaning coring bit 6 outer wall, rotating stainless steel brush 701, making the surface of stainless steel brush 701 and the wall contacts of coring bit 6.
The core piston rod 1 that pushes away in the present invention is provided with displacement transducer, and this displacement transducer can detect the position of the first cleaning brush 2 movement at any time, is convenient to operate the first cleaning brush 2.
When the present invention cleans coring bit 6 inside, push away core piston rod 1 and drive the first cleaning brush 2, push away core print 3 to the right side motion in Fig. 1; Push away core piston rod 1 can to move back and forth left and right under the drive of hydraulic cylinder, drive the first cleaning brush 2 repeatedly to clean the inner hole wall of hollow hydraulic motor axle 4, the endoporus of drill bit extension bar 5, the core bore of getting of coring bit 6; When pushing away core piston rod 1 and driving the first cleaning brush 2 to move to low order end, namely the first cleaning brush 2 arrives the low order end that core bore got by coring bit 6, static, hollow shaft hydraulic motor 4 drives coring bit 6 low speed rotation, there is relative motion in coring bit 6 and the first cleaning brush 2, thus the mud cleans being bonded in coring bit 6 inwall is fallen, reach the object of cleaning drill bit internal.
When the present invention cleans coring bit 6 outside, rotating output shaft 8 drives the second cleaning brush 7 to rotate, make stainless steel brush 701 top and coring bit 6 wall contacts of the second cleaning brush 7, start hollow hydraulic motor axle 4, hollow hydraulic motor axle 4 drives coring bit 6 low speed rotation, there is relative motion in coring bit 6 and the second cleaning brush 7, thus the mud cleans being bonded in coring bit 6 outer wall is fallen, thus reach the object of cleaning bit exterior.
When needing to clean the inside and outside portion of coring bit 6 simultaneously, push away core piston rod 1 and drive the first cleaning brush 2, push away core print 3 when moving right low order end, stop; Rotating output shaft 8 drives the second cleaning brush 7 to rotate, and makes stainless steel brush 701 top and coring bit 6 wall contacts of the second cleaning brush 7; Now, start hollow hydraulic motor axle 4, hollow hydraulic motor axle 4 drives coring bit 6 low speed rotation, coring bit 6 and the second cleaning brush 7, there is relative motion with the first cleaning brush 2 simultaneously, thus being bonded in coring bit 6 outer wall, the mud cleans of inwall falls, and reaches the object of high-efficiency washing drill bit.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (9)
1. the cleaning structure of a side-wall core extractor, comprise coring apparatus body and be arranged on the coring bit of described coring apparatus body front end, it is characterized in that, be provided with in described coring apparatus body and push away core piston rod, described push away core piston rod and described coring bit to get core bore coaxial, the described core piston rod front end that pushes away is provided with the first cleaning brush, described first cleaning brush described push away the promotion of core piston rod under can enter the getting in core bore of described coring bit.
2. cleaning structure as claimed in claim 1, it is characterized in that, described coring apparatus body front end is provided with rotating output shaft, described rotating output shaft is fixed with the second cleaning brush, described second cleaning brush can under the drive of described rotating output shaft with the wall contacts of described coring bit.
3. cleaning structure as claimed in claim 1, is characterized in that, described in push away core piston rod front end be provided with and push away core print, push away core print described in described first cleaning brush is arranged on and describedly to push away between core piston rod.
4. cleaning structure as claimed in claim 2, it is characterized in that, described second cleaning brush comprises the connecting hole of stainless steel brush and the brush holder lateral vertical with described stainless steel brush, and described connecting hole and described rotating output shaft are fixed.
5. cleaning structure as claimed in claim 3, it is characterized in that, described first cleaning brush comprises cylindrical brush and is arranged on the connector at described cylindrical brush two ends, connector and the described core piston rod that pushes away of described cylindrical brush one end are fixed, and connector and the described core print that pushes away of the described cylindrical brush other end are fixed.
6. cleaning structure as claimed in claim 5, it is characterized in that, the external diameter of described cylindrical brush is greater than the internal diameter that core bore got by described coring bit.
7. the cleaning structure as described in as arbitrary in claim 1-6, it is characterized in that, the rear end of described coring bit is connected with drill bit extension bar and hollow shaft hydraulic motor in turn, the endoporus of described drill bit extension bar and hollow shaft hydraulic motor and described coring bit to get core bore coaxial, described first cleaning brush can enter the endoporus of described drill bit extension bar and hollow shaft hydraulic motor respectively.
8. the cleaning structure as described in as arbitrary in claim 1-6, is characterized in that, the brush surface indentation of described first cleaning brush.
9. the cleaning structure as described in as arbitrary in claim 1-6, is characterized in that, described in push away core piston rod and be provided with displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065259.9A CN104775782B (en) | 2015-02-06 | 2015-02-06 | A kind of cleaning structure of side-wall core extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065259.9A CN104775782B (en) | 2015-02-06 | 2015-02-06 | A kind of cleaning structure of side-wall core extractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775782A true CN104775782A (en) | 2015-07-15 |
| CN104775782B CN104775782B (en) | 2018-04-17 |
Family
ID=53617506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510065259.9A Active CN104775782B (en) | 2015-02-06 | 2015-02-06 | A kind of cleaning structure of side-wall core extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775782B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968605A (en) * | 2017-03-28 | 2017-07-21 | 西安同兴石油设备技术有限公司 | A kind of bit of rotary well bore sidewall core taker and push away core apparatus |
| CN109899016A (en) * | 2019-02-26 | 2019-06-18 | 赵秀军 | A kind of heavy duty detergent exploring equipment convenient for safeguarding for iron ore sampling |
| CN113073955A (en) * | 2021-03-26 | 2021-07-06 | 中国海洋石油集团有限公司 | Core distinguishing module and downhole instrument suitable for slim hole |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4378050A (en) * | 1981-01-28 | 1983-03-29 | Tatevosian Ruben A | Arrangement for full hole drilling |
| US4679636A (en) * | 1986-10-16 | 1987-07-14 | Ruhle James L | Method and apparatus for coring rock |
| CN2836980Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cleaning device for drill clamp |
| CN2881097Y (en) * | 2006-03-17 | 2007-03-21 | 陈为民 | Drilling type side-wall coring apparatus |
| CN102076928A (en) * | 2008-06-25 | 2011-05-25 | 伊利诺斯工具制品有限公司 | Apparatus for cleaning boreholes within substrates |
| CN103758514A (en) * | 2014-01-21 | 2014-04-30 | 中国海洋石油总公司 | Rock core distinguishing and storing structure for side-wall coring instrument |
| CN203830784U (en) * | 2014-04-26 | 2014-09-17 | 台州市大森电动工具有限公司 | Electric drill with brush |
| CN104153772A (en) * | 2014-07-08 | 2014-11-19 | 中国海洋石油总公司 | Drilling type side-wall coring device |
-
2015
- 2015-02-06 CN CN201510065259.9A patent/CN104775782B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4378050A (en) * | 1981-01-28 | 1983-03-29 | Tatevosian Ruben A | Arrangement for full hole drilling |
| US4679636A (en) * | 1986-10-16 | 1987-07-14 | Ruhle James L | Method and apparatus for coring rock |
| CN2836980Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cleaning device for drill clamp |
| CN2881097Y (en) * | 2006-03-17 | 2007-03-21 | 陈为民 | Drilling type side-wall coring apparatus |
| CN102076928A (en) * | 2008-06-25 | 2011-05-25 | 伊利诺斯工具制品有限公司 | Apparatus for cleaning boreholes within substrates |
| CN103758514A (en) * | 2014-01-21 | 2014-04-30 | 中国海洋石油总公司 | Rock core distinguishing and storing structure for side-wall coring instrument |
| CN203830784U (en) * | 2014-04-26 | 2014-09-17 | 台州市大森电动工具有限公司 | Electric drill with brush |
| CN104153772A (en) * | 2014-07-08 | 2014-11-19 | 中国海洋石油总公司 | Drilling type side-wall coring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968605A (en) * | 2017-03-28 | 2017-07-21 | 西安同兴石油设备技术有限公司 | A kind of bit of rotary well bore sidewall core taker and push away core apparatus |
| CN109899016A (en) * | 2019-02-26 | 2019-06-18 | 赵秀军 | A kind of heavy duty detergent exploring equipment convenient for safeguarding for iron ore sampling |
| CN113073955A (en) * | 2021-03-26 | 2021-07-06 | 中国海洋石油集团有限公司 | Core distinguishing module and downhole instrument suitable for slim hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775782B (en) | 2018-04-17 |
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| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |