CN201560742U - Check valve for drill bit of downhole drill hammer - Google Patents
Check valve for drill bit of downhole drill hammer Download PDFInfo
- Publication number
- CN201560742U CN201560742U CN2010200375423U CN201020037542U CN201560742U CN 201560742 U CN201560742 U CN 201560742U CN 2010200375423 U CN2010200375423 U CN 2010200375423U CN 201020037542 U CN201020037542 U CN 201020037542U CN 201560742 U CN201560742 U CN 201560742U
- Authority
- CN
- China
- Prior art keywords
- valve body
- spring
- bit
- downhole
- drilling
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
A check valve for drill bit of downhole drill hammer belongs to the equipment of geophysical prospecting for petroleum and underground mineral drilling. The check valve for drilling bit of downhole drill hammer comprises a drilling bit guiding positioner, a valve body, a one-way valve core, a spring, a spring seat and a snap ring. A hole is expanded below an inner airway of the drilling bit guiding positioner. In a processed valve body, an upper part of the valve core abuts against an upper inner step of the valve body. The upper end of the spring is sleeved to the inner step of the valve core and abuts against the valve core. The lower end is sleeved to the spring seat. The snap ring is provided behind the spring seat. The snap spring is provided at the lower inner step of the valve body. The upper part of the drilling bit guiding positioner is connected with a joint at the lower part of the downhole drill hammer, and the lower part is connected with the drill bit. The check valve for drill bit of downhole drill hammer effectively prevents a state that the downhole drill hammer is blocked and can not operate, which is caused by the back pressing of the downhole mud into the downhole drill hammer when the downhole drill hammer drills directly or a high-pressure air source is interrupted by other reasons. The smooth operation of drilling is ensured.
Description
Technical field
Down-the-hole air hammer bore bit unidirectional stop valve, be used for petroleum exploration, the ore deposit drilling well use silt that the process of down-the-hole air hammer percussion drilling stops the shaft bottom because of the effect of mud column pressure is pressed in the down-the-hole air hammer by counter, belong to petroleum exploration, drilling equipment manufacturing technology field, ore deposit.
Background technology
At present the petroleum exploration drilling well, in the drilling well of ore deposit, drilling well on competent bed, and drilling depth is during less than 50 meters, the percussion drilling of general use down-the-hole air hammer, when in regional drilling wells such as river shoal, fossil river beds, because the deposition of gravel, silt, and phreatic surface is higher, the mine water column pressure is big, bigger water column pressure causes after adjunction drilling tool or other reason interruption high-pressure air source, the silt in shaft bottom is pressed in the down-the-hole air hammer by counter under the effect of mud column pressure, causes down-the-hole air hammer to be stuck and can not work, and has a strong impact on drillng operation.
Summary of the invention
The purpose of this utility model is during at existing down-the-hole air hammer percussion drilling, the silt that the shaft bottom may take place is pressed in the down-the-hole air hammer by counter, the problem that causes down-the-hole air hammer to be stuck and exist, designed the down-the-hole air hammer unidirectional stop valve, unidirectional stop valve is opened to make to creep into smoothly and is carried out when normally creeping into, after adjunction drilling tool or other reason interruption high-pressure air source, can close the passage in the down-the-hole air hammer, stop the silt in shaft bottom can not to be pressed in the down-the-hole air hammer by counter because of the effect of mud column pressure.
The technical solution of the utility model is: the utility model comprises the bore bit orienting locator, valve body, nonreturn valve core, spring, spring base, snap ring, reaming processing valve body below the inner air flue of bore bit orienting locator, in the valve body that processes, spool top withstands on the upper inner platform rank of valve body, the spring upper end is enclosed within on the interior step of spool, and withstand on the spool, the lower end is enclosed within on the spring base, there is a snap ring spring base back, snap ring is on the lower inner platform rank of valve body, bore bit orienting locator top is connected with the joint of down-the-hole air hammer bottom, and bore bit orienting locator bottom is connected with drill bit.
When down-the-hole air hammer is worked, just there is high-pressure air source to pass through, spool just moves down under the effect of high pressure draught, opens gas channel, and air-flow passes through from air flue, and system's operate as normal reaches the purpose of normal drilling well.
After adjunction drilling tool or other reason make down-the-hole air hammer interrupt high-pressure air source, spool is under the effect of initial tension of spring, spool top withstands on the topping bar of valve body, unidirectional stop valve is closed, when silt upwards flows from the shaft bottom, unidirectional stop valve just stops silt upwards to flow in the down-the-hole air hammer, thereby avoids down-the-hole air hammer to be stuck and do not work.
The utility model beneficial effect is: can effectively avoid the down-hole percussion drill well when adjunction drilling tool or other reason interruption high-pressure air source, the silt in shaft bottom is counter to be pressed in the down-the-hole air hammer, cause down-the-hole air hammer to be stuck and the generation of inoperable situation, guarantee that drillng operation carries out smoothly.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
The specific embodiment
The utility model comprises bore bit orienting locator 6, valve body 5, nonreturn valve core 4, spring 3, spring base 2, snap ring 1.
Reaming processing valve body 5 below bore bit orienting locator 6 inner air flues, in the valve body 5 that processes, nonreturn valve core 4 tops withstand on the upper inner platform rank of valve body 5, spring 3 upper ends are enclosed within on the nonreturn valve core 4 interior steps, and withstand on the nonreturn valve core 4, and the lower end is enclosed within on the spring base 2, there is a snap ring 1 spring base 2 back, snap ring 1 is on the lower inner platform rank of valve body 5, and bore bit orienting locator 6 tops are connected with the joint of down-the-hole air hammer bottom, and bore bit orienting locator 6 bottoms are connected with drill bit.
When down-the-hole air hammer is worked, just there is high-pressure air source to pass through, spool 4 overcomes the elastic force of spring 3 under the effect of high pressure draught, move down along valve body 5 inwalls, opens gas channel, and gas passes through from air flue, and system's operate as normal reaches the purpose of normal drilling well.
After adjunction drilling tool or other reason make down-the-hole air hammer interrupt high-pressure air source, spool 4 is under the effect of spring 3 pretightning forces, spool 4 tops withstand on the topping bar of valve body 5, unidirectional stop valve is closed, when silt upwards flows from the shaft bottom, unidirectional stop valve just stops silt upwards to flow in the down-the-hole air hammer, thereby avoids down-the-hole air hammer to be stuck and do not work, and guarantees that drillng operation can carry out smoothly.
Claims (3)
1. down-the-hole air hammer bore bit unidirectional stop valve, comprise bore bit orienting locator, valve body, nonreturn valve core, spring, spring base, snap ring, it is characterized in that: reaming processing valve body below the inner air flue of bore bit orienting locator, in the valve body that processes, spool top withstands on the upper inner platform rank of valve body, and the spring upper end is enclosed within on the interior step of spool, and withstand on the spool, the lower end is enclosed within on the spring base, and there is a snap ring spring base back, and snap ring is on the lower inner platform rank of valve body.
2. down-the-hole air hammer bore bit unidirectional stop valve according to claim 1 is characterized in that bore bit orienting locator top is connected with the joint of down-the-hole air hammer bottom.
3. down-the-hole air hammer bore bit unidirectional stop valve according to claim 1 is characterized in that bore bit orienting locator bottom is connected with drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200375423U CN201560742U (en) | 2010-01-05 | 2010-01-05 | Check valve for drill bit of downhole drill hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200375423U CN201560742U (en) | 2010-01-05 | 2010-01-05 | Check valve for drill bit of downhole drill hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201560742U true CN201560742U (en) | 2010-08-25 |
Family
ID=42625889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200375423U Expired - Fee Related CN201560742U (en) | 2010-01-05 | 2010-01-05 | Check valve for drill bit of downhole drill hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201560742U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102619472A (en) * | 2012-04-06 | 2012-08-01 | 中国石油天然气股份有限公司 | Backward-flowing prevention air hammer drill for foam drilling |
| CN103667562A (en) * | 2013-12-10 | 2014-03-26 | 天津市三特电子有限公司 | Built-in one-way valve type automatic high-temperature imaging protective device |
| CN105378206A (en) * | 2013-07-12 | 2016-03-02 | 钻岩气动有限公司 | Dynamic seal tube for a down hole hammer drill |
-
2010
- 2010-01-05 CN CN2010200375423U patent/CN201560742U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102619472A (en) * | 2012-04-06 | 2012-08-01 | 中国石油天然气股份有限公司 | Backward-flowing prevention air hammer drill for foam drilling |
| CN105378206A (en) * | 2013-07-12 | 2016-03-02 | 钻岩气动有限公司 | Dynamic seal tube for a down hole hammer drill |
| CN105378206B (en) * | 2013-07-12 | 2019-03-26 | 钻岩气动有限公司 | Dynamic sealing pipe for underground hammer drill |
| CN103667562A (en) * | 2013-12-10 | 2014-03-26 | 天津市三特电子有限公司 | Built-in one-way valve type automatic high-temperature imaging protective device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110029938B (en) | Gas reverse circulation well drilling method | |
| CN201031634Y (en) | Radial variable casing tube centralizer | |
| WO2006071591A3 (en) | Downhole impact sensing system and method of using the same | |
| CN201560742U (en) | Check valve for drill bit of downhole drill hammer | |
| WO2006033906A3 (en) | A subsea wellhead arrangement for hydraulically pumping a well | |
| CN104234654B (en) | A kind of underground hydraulic pressure bumper stuck releasing device | |
| CN103573239A (en) | Staged fracturing device and using method thereof | |
| CN104343424B (en) | Coalbed-methane horizontal-well PE (poly ethylene) screen pipe well completion application process method | |
| CN201778708U (en) | Embedded rock core grabber of coring tool | |
| CN105507814A (en) | Coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells and technological method of coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells | |
| CN102561994A (en) | Completion reoperation blowout control tail tube valve | |
| US9822607B2 (en) | Control line damper for valves | |
| CN202417457U (en) | Flowback preventing hollow layered water injection pipe column | |
| CN202064926U (en) | Erosion preventive device for eddy erosion preventive valve based on hydraulic jetting fracturing | |
| CN101748989A (en) | Branch well window sealing method | |
| CN204386557U (en) | RD downhole choke valve | |
| CN106246144A (en) | Coiled tubing bridging plug perforating and fracturing integral process | |
| CN103362488A (en) | Sand blasting device allowing fracturing sliding sleeve to be fished | |
| CN202531150U (en) | Fishable fracturing sliding sleeve sand spraying device | |
| CN205189801U (en) | Oil well pipeline maintenance device | |
| CN101498205B (en) | Horizontal well washing valve blocking apparatus | |
| CN105756627A (en) | Downhole low-pressure pulse jet modulator | |
| CN2916095Y (en) | Drill stem for horizontal well workover technology | |
| CN204804733U (en) | Fusiformis drift size gauge tool instrument | |
| CN113914804A (en) | Pipe cutter for treating geological drilling accident |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20190105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |