CN201714324U - Scraper-type steel body PDC airtight coring bit - Google Patents
Scraper-type steel body PDC airtight coring bit Download PDFInfo
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- CN201714324U CN201714324U CN2010202674222U CN201020267422U CN201714324U CN 201714324 U CN201714324 U CN 201714324U CN 2010202674222 U CN2010202674222 U CN 2010202674222U CN 201020267422 U CN201020267422 U CN 201020267422U CN 201714324 U CN201714324 U CN 201714324U
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Abstract
The utility model provides a scraper-type steel body PDC (polycrystalline diamond compact) airtight coring bit, which belongs to well drilling equipment and comprises a bit body, wing fences, cutting tooth columns and gauge teeth, wherein, the bit body is in the shape of a tube; more than one wing fences is uniformly embedded on the upper edge of the tubular body and along the circumference; a plurality of the cutting tooth columns are transversely embedded on the wing fences from the top part to the outer cambered surface; a plurality of outer gauge teeth in the shape of an upright post are embedded on the straight surface sections at the back parts of the wing fences; inner gauge teeth are also embedded on the end surfaces of inner rings facing to the bit body at the top ends of the wing fences; and a waterway hole is formed on a tube body wall of the bit body from top to bottom. The scraper-type steel body PDC airtight coring bit has the advantages as follows: the structure is reasonable, the manufacturing technique is simple, the route of a waterway is short, the manufacture is easy, and machining procedures of extended bits can be overcome; polycrystalline diamond compacts in the TYPE series are adopted as cutting elements, WC (tungsten carbide) tooth supports are eliminated, the cumbersome manufacturing technique and welding technology for drilling WC tooth support holes can be simplified, and the cost of the bit is lowered; andthe penetration rate is high, the service life is long, the well core diameter is large, and the yield is high.
Description
Technical field
The utility model belongs to the drilling well facility, particularly relates to a kind of scraper type steel body PDC sealing core drilling drill bit.
Background technology
The oil drilling sealing core drilling is mainly used in the latter period of oilfield development manhole, and its main purpose is to take out the airtight rock core that is not subjected to mud contamination.The policymaker can be according to the airtight rock core that takes out, chemical examination, analyze and draw reservoir profit saturation ratio, and remaining reserves, thereby for oil field general arrangement development plan provide science, foundation reliably, for the oilfield well network rational deployment provides reservoir information accurately.
Along with Daqing oil field exploration and development process, to grasp the subterranean oil water transport constantly, in real time and move situation and rule, grand celebration drilling engineering Institute for Research and Technologies in 1964 have begun the research of sealing core drilling technology, and have obtained success, for important contribution has been made in the Daqing oil field exploitation.At that time owing to be subjected to the restriction of condition, sealing core drilling tool diameter big, heavy (the instrument external diameter is ф 244mm).Coring bit is heavier, and a people can't move, and rate of penetration is slow, and it is bigger that the workman pays labour intensity.In order to satisfy the needs of oil field prospecting exploitation to greatest extent, improve the rate of penetration of drill bit, shorten when boring, improve the airtight rate of rock core, alleviate labor strength effectively, at the beginning of the seventies, grand celebration drilling engineering Institute for Research and Technology has carried out the research of ф 215 mm sealing core drilling technologies, has obtained success again.This coring tool is used today always, the steel body PDC core bit supporting with it (combination of backrest tooth pillar cutting teeth) be not change also, though under historical conditions at that time, satisfied the needs of producing, but arrived today of scientific and technical develop rapidly, this core bit obviously no longer adapts to the demand of producing.The deficiency of this core bit maximum is exactly the machining difficulty, and bit port is long, and the cutting teeth welding-on is on the hard-metal insert post, and tooth post Inlaid again welds (or heat baking dress) in drill bit post hole, the technology more complicated.The inside and outside guarantor footpath of drill bit is a complex, has both overlapped the hard rock that is inlaid with gold, and just column artificial diamond stone granulate is set in the metallic sheath, both has been called complex.Why develop complex, it is fragile to solve column diamond itself exactly, frangible, anti-shear ability is poor, directly be applied on the drill bit difficult, the development complex has solved its key problem in technology, has given full play to the advantage of diamond erosion resistant, and then complex is set in the hole, drill bit inside and outside guarantor footpath.Its insert technology is: this its whole manufacturing process complexity of steel body PDC core bit is inlayed in heat baking dress and riveting.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and a kind of scraper type steel body PDC sealing core drilling drill bit is provided.
Scraper type steel body PDC sealing core drilling drill bit of the present utility model, be to constitute by bit body, wing fence, cutting teeth post and gauge teeth, described bit body is a tubulose, in the tubular body upper edge and periphery evenly be embedded with more than one wing fence, top at wing fence laterally is embedded with several cutting teeth posts to extrados, on the section of facing directly at wing fence back, be embedded with gauge teeth outside several column shapes, on the end face of the interior ring of bit body, also be embedded with interior gauge teeth on the wing fence top, water channel hole is from top to bottom arranged in the tube body wall of bit body.
As further improvement of the utility model, described cutting teeth post is the cutting element that constitutes with the PDC diamond compact.
As further improvement of the utility model, described outer gauge teeth and interior gauge teeth are made by the carbide alloy of WC.
Scraper type steel body PDC sealing core drilling drill bit of the present utility model, operating principle is: under the pressure of the drill effect, PDC cutting teeth wedging stratum; Core bit rotates along the axle center under the effect of TORQ, and the plough fractured rock is sheared, scraped to the PDC cutting teeth; Fragmented rock is taken from the shaft bottom by high pressure liquid stream under the effect of pump pressure.As time goes on, the rock core post forms and enters inner core, is discharged from and the sealing fluid that inner core is full of is isopyknic, and the rock core post is soaked, wraps up by the sealing fluid in the tube, and isolates with mud, breaks off the continuation etch of F.And the rock core post is not enough to be immersed in the core position of rock core post by slurry erosion to the amount of filtrate in the blowhole before advancing tube, thereby reaches the airtight theory of mechanics of rock core.
Scraper type steel body PDC sealing core drilling drill bit of the present utility model, rational in infrastructure, manufacturing process is simple, and the water channel stroke is short, and easily drill bit machine preface has been simplified in processing; Adopting Type series diamond compact is cutting element, has eliminated the holder of WC tooth, has simplified and has bored loaded down with trivial details manufacturing, the welding procedure in WC tooth holder hole, has reduced the drill bit cost; Rate of penetration is fast, long service life, and core diameter is big, the yield rate height.
Description of drawings
Figure of description is the longitudinal sectional view of the utility model scraper type steel body PDC sealing core drilling drill bit.
The specific embodiment
Scraper type steel body PDC sealing core drilling drill bit of the present utility model is to be made of bit body, wing fence, cutting teeth post and gauge teeth.Described bit body 1 is a tubulose, in the tubular body upper edge and periphery evenly be embedded with more than one wing fence 2, top at wing fence 2 laterally is embedded with several cutting teeth posts 3 to extrados, described cutting teeth post 3 is the cutting elements that constitute with Type and PDC diamond compact.On the section of facing directly at wing fence 2 backs, be embedded with gauge teeth 4 outside several column shapes, gauge teeth 5 in wing fence 2 tops also are embedded with on the end face of the interior ring of bit body 1, outer gauge teeth 4 and interior gauge teeth 5 are made by the carbide alloy of WC.Water channel hole 6 is from top to bottom arranged in the tube body wall of bit body 1.
Scraper type steel body PDC sealing core drilling drill bit of the present utility model is to be made of bit body, wing fence, cutting teeth post and gauge teeth.Described bit body 1 is a tubulose, in the tubular body upper edge and periphery evenly be embedded with five wing fence 2, top at wing fence 2 laterally is embedded with 3～7 cutting teeth posts 3 to extrados, described cutting teeth post 3 is the cutting elements that constitute with Type and PDC diamond compact.On the section of facing directly at wing fence 2 backs, be embedded with gauge teeth 4 outside 2～7 column shapes, gauge teeth 5 in wing fence 2 tops also are embedded with on the end face of the interior ring of bit body 1, outer gauge teeth 4 and interior gauge teeth 5 are made by the carbide alloy of WC.Water channel hole 6 is from top to bottom arranged in the tube body wall of bit body 1.
Claims (3)
1. scraper type steel body PDC sealing core drilling drill bit, be by bit body, wing fence, cutting teeth post and gauge teeth constitute, it is characterized in that its bit body (1) is a tubulose, in the tubular body upper edge and periphery evenly be embedded with more than one wing fence (2), top at wing fence (2) laterally is embedded with several cutting teeth posts (3) to extrados, on the section of facing directly at wing fence (2) back, be embedded with gauge teeth (4) outside several column shapes, on the end face of the interior ring of bit body (1), also be embedded with interior gauge teeth (5) on wing fence (2) top, water channel hole (6) is from top to bottom arranged in the tube body wall of bit body (1).
2. scraper type steel body PDC sealing core drilling drill bit as claimed in claim 1 is characterized in that cutting teeth post (3) is the cutting element that constitutes with the PDC diamond compact.
3. scraper type steel body PDC sealing core drilling drill bit as claimed in claim 1 or 2 is characterized in that outer gauge teeth (4) and interior gauge teeth (5) make by the carbide alloy of WC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202674222U CN201714324U (en) | 2010-07-22 | 2010-07-22 | Scraper-type steel body PDC airtight coring bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202674222U CN201714324U (en) | 2010-07-22 | 2010-07-22 | Scraper-type steel body PDC airtight coring bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714324U true CN201714324U (en) | 2011-01-19 |
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ID=43460322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202674222U Expired - Fee Related CN201714324U (en) | 2010-07-22 | 2010-07-22 | Scraper-type steel body PDC airtight coring bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714324U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852461A (en) * | 2012-09-25 | 2013-01-02 | 哈尔滨工业大学 | Core drilling drill with barrier crushing and chip-discharge functions |
| CN103075107A (en) * | 2013-01-16 | 2013-05-01 | 弘元超硬材料(河南)有限公司 | Diamond gauge protection composite tooth drill bit and manufacture method of diamond gauge protection composite tooth drill bit |
| CN114235482A (en) * | 2021-12-30 | 2022-03-25 | 山东省地质矿产勘查开发局第四地质大队(山东省第四地质矿产勘查院) | Drilling and coring equipment and method for geological exploration |
-
2010
- 2010-07-22 CN CN2010202674222U patent/CN201714324U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852461A (en) * | 2012-09-25 | 2013-01-02 | 哈尔滨工业大学 | Core drilling drill with barrier crushing and chip-discharge functions |
| CN103075107A (en) * | 2013-01-16 | 2013-05-01 | 弘元超硬材料(河南)有限公司 | Diamond gauge protection composite tooth drill bit and manufacture method of diamond gauge protection composite tooth drill bit |
| CN114235482A (en) * | 2021-12-30 | 2022-03-25 | 山东省地质矿产勘查开发局第四地质大队(山东省第四地质矿产勘查院) | Drilling and coring equipment and method for geological exploration |
| CN114235482B (en) * | 2021-12-30 | 2023-08-11 | 山东省地质矿产勘查开发局第四地质大队(山东省第四地质矿产勘查院) | Drilling coring equipment and drilling coring method for geological exploration |
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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: 20110119 Termination date: 20140722 |
|
| EXPY | Termination of patent right or utility model |