CN2554329Y - Through-type churn drilling tool - Google Patents
Through-type churn drilling tool Download PDFInfo
- Publication number
- CN2554329Y CN2554329Y CN 02235665 CN02235665U CN2554329Y CN 2554329 Y CN2554329 Y CN 2554329Y CN 02235665 CN02235665 CN 02235665 CN 02235665 U CN02235665 U CN 02235665U CN 2554329 Y CN2554329 Y CN 2554329Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drilling
- hammer
- well
- rock
- 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 - Lifetime
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- Earth Drilling (AREA)
Abstract
The utility model relates to a through-type churn drilling tool for drilling oil in a geophysical prospecting well, providing a drilling tool which can drill through the quicksand, the gravel as well as the rock section in a well. A central pipe (8) above a drill bit (7) is coated with a ring through-type down-the-hole hammer(6), the hammer (6) forms a ring cavity (5) with the inner wall of a drill rod (4), the lower part of the ring cavity (5) is communicated with a upper air channel of the drill bit, while the upper part is communicated with the ring cavity between the central pipe (8) and the drill rod (4). Due to a heavy hammer which can slide up and down along the inner of a central pipe is arranged above the drill bit, the hammer forms a ring channel with the inner wall of the drill rod, therefore, the drilling of quicksand and gravel section in the well are not affected. When drilling the rock section, as the rigidity of the rock is strong, the drill bit drives the drilling tool to vibrate, and the hammer which is also driven to vibrate up and down generates great impact to assist the drill bit to break the rock, therefore, the drilling speed is increased, meanwhile, the drilled wellbore has the diameter larger than that of the drill bit, thus smoothing the putting-in of the dynamite.
Description
(1) technical field:
The utility model relates to the through churn drilling tools of diamond oil geophysical exploration well.
(2) background technology:
The geophysical prospecting for oil well is generally superficial, has only tens meters.At present, treat drift sand gravel well section, what adopted is air or reverse circulating drilling tool, uses the well that this drilling tool gets out and can throw in explosive smoothly, obtains all data of seismic work.But adopt this drilling tool not to be suitable for rock drilling well section, the well that is got out can not be thrown in explosive smoothly, has both made to cast also to throw not in placely, thereby influences the accuracy of seismic data.
(3) utility model content:
Technical problem to be solved in the utility model is at the problem that exists in the background technology, and a kind of through churn drilling tools that also is fit to rock drilling well section is provided.
The invention for solving the technical problem can reach by following technical solution: be with the ring-type hollow hammer hole on the drill bit on central tube, hammer forms ring cavity with the drilling rod inwall, this ring cavity is communicated with air flue on the drill bit down, upward with central tube, drilling rod between ring cavity be communicated with.
In such scheme, because the weight that can slide up and down along the inside center pipe is housed on drill bit, when getting into rock well section, because the hardness of rock is big, drill bit produces vibrations, and drilling tool is also followed vibrations, the weight of following vibrations produces impact force to drill bit, can realize its purpose.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: because the weight that can slide up and down along the inside center pipe is housed on drill bit, it forms the upper and lower circular passage that is communicated with the drilling rod inwall, does not influence to drill drift sand, gravel well section.When being drilled into rock well section, because the hardness of rock is big, drill bit drives drilling tool and produces vibrations, the weight of following vertical tremor produces very big impact force to drill bit, helps the drill bit fractured rock, has improved bit speed, get out the diameter of the diameter of well simultaneously, can throw in explosive smoothly greater than drill bit.
(4) description of drawings:
Accompanying drawing is the utility model installation drawing.
(5) specific embodiment:
Below in conjunction with the drawings and specific embodiments will the utility model is described in further detail:
Shown in accompanying drawing, on central tube 8, be with ring-type hollow hammer hole 6 on the drill bit 7, hammer 6 forms ring cavity 5 with drilling rod 4 inwalls, and this ring cavity 5 times is communicated with air flue on the drill bit, the ring cavity between last and central tube 8, the drilling rod 4 is communicated with.
In such scheme, the unit head 2 that install by sliding sleeve 3 and well head on the top of double-wall drill pipe 4, binary channels gas tap 1 are connected.
Claims (1)
1, a kind of through churn drilling tools that relates to diamond oil geophysical exploration well, contain drill bit (7), central tube (8) and double-wall drill pipe (4) on the drilling tool, it is characterized in that: on central tube (8), be with ring-type hollow hammer hole (6) on the drill bit (7), hammer (6) and drilling rod (4) inwall form ring cavity (5), this ring cavity (5) is communicated with air flue on the drill bit down, upward with central tube (8), drilling rod (4) between ring cavity be communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235665 CN2554329Y (en) | 2002-06-03 | 2002-06-03 | Through-type churn drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235665 CN2554329Y (en) | 2002-06-03 | 2002-06-03 | Through-type churn drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2554329Y true CN2554329Y (en) | 2003-06-04 |
Family
ID=33710133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235665 Expired - Lifetime CN2554329Y (en) | 2002-06-03 | 2002-06-03 | Through-type churn drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2554329Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071874A (en) * | 2011-01-12 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司 | Drilling method suitable for gravel area |
| CN102094576A (en) * | 2010-12-01 | 2011-06-15 | 卢丹 | Crushing mechanism |
| CN101519959B (en) * | 2009-04-07 | 2012-07-18 | 铁道第三勘察设计院集团有限公司 | Drilling touching shocking integrative prospecting instrument and use method thereof |
-
2002
- 2002-06-03 CN CN 02235665 patent/CN2554329Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519959B (en) * | 2009-04-07 | 2012-07-18 | 铁道第三勘察设计院集团有限公司 | Drilling touching shocking integrative prospecting instrument and use method thereof |
| CN102094576A (en) * | 2010-12-01 | 2011-06-15 | 卢丹 | Crushing mechanism |
| CN102094576B (en) * | 2010-12-01 | 2013-12-25 | 卢丹 | Crushing mechanism |
| CN102071874A (en) * | 2011-01-12 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司 | Drilling method suitable for gravel area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120603 Granted publication date: 20030604 |