CN204920775U - Jumbo size well is with anti - circulating air hammer hammer block structure - Google Patents
Jumbo size well is with anti - circulating air hammer hammer block structure Download PDFInfo
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- CN204920775U CN204920775U CN201520715278.7U CN201520715278U CN204920775U CN 204920775 U CN204920775 U CN 204920775U CN 201520715278 U CN201520715278 U CN 201520715278U CN 204920775 U CN204920775 U CN 204920775U
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Abstract
The utility model discloses a jumbo size well is with anti - circulating air hammer hammer block structure, including top connection, outer shell, ring type check valve, central sand discharge pipe, distribution inner casing, air piston and distribution cover, the double -walled conversion nipple joint of top connection and anti - circulating air hammer passes through threaded connection, the outer shell passes through the screw thread to be connected with the spline housing of the anti -drop bore bit of anti - circulating air hammer, and the seat is on the spline housing in proper order for the snap ring of distribution inner casing, distribution cover and anti -drop bore bit, and air piston is located the distribution inner casing and the cavity that forms is overlapped in the distribution, pegs graft with the first inner tube lower extreme of double -walled changing -over in central sand discharge pipe upper end, and footpath broad in the middle section on the bore bit body of bottom entry anti -drop bore bit, is equipped with the ring type check valve in impressing the distribution inner casing between central sand discharge pipe and the top connection. Adopt the utility model discloses an anti - circulating air hammer need not to adopt the three channels drilling rod, does not also need the supplementary sediment outflow of liquid column pressure of mud simultaneously, and simple structure can practice thrift comprehensive cost.
Description
Technical field
The utility model relates to a kind of big size hole reacting cycle air hammer hammer body structure being mainly used in the big size hole counterflush drilling fields such as oil and gas well drilling, Foundation Design, hydrology and water well drilling.
Background technology
In recent years, in oil/gas drilling field, gas direct circulation drilling technology achieves remarkable result in improvement leakage, protection reservoir, raising rate of penetration etc.But it is when big size hole drilling well, large-minded needed for direct circulation gas drilling, number of devices is many, high in cost of production has become common problem.Meanwhile, during conventional gas drilling well, high-speed gas is obvious to borehole wall erosion, to go into the well interior easy appearance " pregnant " in the condition of hole instability.In addition, if down-hole water layer, drop ply exist simultaneously, easily occur leaking and do not leak the situation of sand, be difficult to set up circulation.Adopt Large Diameter Reverse circulating air hammer to implement drilling well, institute's air demand is that the larger contrast of 1/2 ~ 1/5(borehole size of conventional direct circulation gas drilling is more obvious).The drilling well of reacting cycle air hammer, gas does not enter annular space, can effectively avoid borehole wall erosion, solves the problem of leakage not sand return simultaneously.Big size hole reacting cycle air hammer effectively can reduce big size hole gas drilling cost, solves leakage mistake and returns problem.At present, what domestic petroleum gas drilling field was conventional is direct circulation air hammer.
In Foundation Design field, along with the high speed development of China's economic construction, the embedding rock foundation pouring pile quantity of the engineerings such as highrise building, port and pier, Base of Dam of Reservoir, landslide control, highway bridge significantly increases.These priming concrete pile hole diameters are general all comparatively large, and socket length is comparatively dark, mostly require to embed fresh matrix face once, with the bearing capacity guaranteeing foundation pile and the ability of withstanding natural calamities.
Conventional Big-Diameter Rock-Embedded Pile hole construction method mostly is: steel cable Churn drill, steel grit creep into, carbide alloy creeps into, combine roller boring, combination gear hobbing is crept into, annulus coring etc., but these drilling efficiencies and hole quality unsatisfactory, especially bore and meet comparatively hard formation (compressive strength >150MPa), drilling depth is slow, even at all cannot drilling depth.In order to improve the drilling efficiency of major diameter hard formation, domestic probing circle experts and scholars are studied Major diameter downhole hammer drilling technology.Current domestic main major diameter hard rock DTH drilling technology has following several:
1, major diameter wet type reverse circulation down-the-hole hammer.This down-hole hammer effectively can improve the drilling efficiency of major diameter hard formation.But this down-hole hammer needs to support the use special triple channel drilling rod (oil and gas well drilling field is difficult to adopt such drilling rod to carry out drilling well), and needs the head of liquid of mud to assist sediment outflow.
2, direct circulation cluster type down-hole hammer.Such down-hole hammer is made up of the direct circulation down-hole hammer of multiple minor diameter.Direct circulation cluster type down-hole hammer, required large-minded, hold facility is many, and sediment outflow effect is poor, and domestic application is less.
3, reacting cycle cluster type down-hole hammer.If publication number is CN203531746U, publication date is that the Chinese patent literature on April 9th, 2014 discloses a kind of cluster type reacting cycle pneumatic down-hole hammer, comprises gas distributing chamber, cylindrical shell apron and runs through the central tube of gas distributing chamber and cylindrical shell apron; One deck combination hammer is at least set between cylindrical shell apron and central tube, and combination hammer is made up of some down-hole hammers be arranged in central tube circumference; Central tube is connected with gas distributing chamber by the air inlet on tube wall; Gas distributing chamber respectively with the piston-cylinder in down-hole hammer be connected; Be provided with the end lip baffle plate be enclosed within central tube and down-hole hammer bottom cylindrical shell apron, which is provided with some slag suction mouths, slag suction mouth is connected with central tube by dreg inhaling pipe, is provided with interior pipe in central tube, and the two ends of interior pipe are connected with central tube.The down-hole hammer of this utility model can impact work done simultaneously, efficiently creep into, realize reverse circulation drilling, the Efficient air being applicable to heavy caliber aquifer is crept into, overcoming direct circulation creeps into when running into aquifer, in drilling process, circulatory mediator carries rock dust ability, there is potential safety hazard in hole, cannot the defect of fast drilling.
But such down-hole hammer is made up of the direct circulation down-hole hammer of multiple minor diameter, but drive the gas of down-hole hammer to drain into earth's surface by special gas circuit, directly can not be disposed to shaft bottom and participate in taking rock.The sediment outflow mode of this down-hole hammer is Pump breath countercirculate, needs to use special triple channel drilling rod, and need with the use of mud, gravel pump.
Utility model content
The utility model is intended to for the defect existing for above-mentioned prior art and deficiency, there is provided a kind of big size hole reacting cycle air hammer hammer body structure, this reacting cycle air hammer structure can provide the percussive-rotary drilling of 450mm ~ 700mm diameter borehole to break impact energy required for rock.Adopting reacting cycle air hammer of the present utility model, without the need to adopting triple channel drilling rod, also not needing the head of liquid of mud to assist sediment outflow simultaneously, structure is simple, save gas drilling tolerance, equipment use amount while improving drilling efficiency, reduce occupation area of equipment volume, save integrated cost.
The utility model realizes by adopting following technical proposals:
A kind of big size hole reacting cycle air hammer hammer body structure, it is characterized in that: comprise top connection, outer shell, ring type flap valve, central row sandpipe, distribution inner casing, air rammer and distribution cover, the double-walled conversion pipe nipple of described top connection and reacting cycle air hammer passes through screwed connection, described outer shell is connected by the spline housing of screw thread with the slip-off preventing bore bit of reacting cycle air hammer, distribution inner casing, the snap ring of distribution cover and slip-off preventing bore bit successively seat on spline housing, air rammer is positioned at the cavity of distribution inner casing and the formation of distribution cover, pipe lower end grafting in central row sandpipe upper end and double-walled changing-over head, in footpath broad in the middle section press-in distribution inner casing, the bore bit body upper end of slip-off preventing bore bit is inserted in lower end, ring type flap valve is housed between central row sandpipe and top connection.
Ring type flap valve is made up of valve plate and spring, and valve plate has seal groove, built-in O RunddichtringO, and valve plate is coordinated with contraction front in top connection realized sealing by O RunddichtringO.
Described spring is carbon spring steel wires.
Described distribution inner casing medium position radial direction evenly offers multiple air inlet port.
Described distribution puts end face normal direction and is evenly arranged several axial hole, and offer the radial hole of same quantity at external cylindrical surface, axial hole and radial hole run through mutually simultaneously, forms distribution runner.
Described air rammer is hollow structure, central row sandpipe runs through and mistake from air rammer center, air rammer is freely up and down movable in the structure space that central row sandpipe, distribution inner casing, distribution cover and bore bit body form, and rotates freely centered by the axis of himself simultaneously.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1, be applied to by the utility model in reacting cycle air hammer, it is relative to major diameter wet type reverse circulation down-the-hole hammer, without the need to adopting triple channel drilling rod, does not also need the head of liquid of mud to assist sediment outflow simultaneously.Structure is simple, and component are few, do not have cluster type down-hole hammer so complicated; Cluster type down-the-hole hammer drill bore dia is fixing, and a cluster type down-hole hammer can only bore a kind of boring of diameter.And the utility model related products can change the drill bit of other sizes;
2, domestic at present monomer reacting cycle air hammer bore diameter is less, is generally used for geological prospecting sampling.The reacting cycle air hammer that the utility model relates to, can be used for 450mm ~ 700mm big size hole drilling well of the probing such as Oil/gas Well, Foundation Design industry.
3, the utility model is used for oil/gas drilling, can save tolerance and equipment more than 60% with the drilling well of size well.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is big size hole reacting cycle air hammer hammer body structure schematic diagram.
Mark in figure:
1, outer shell, 3-3, top connection, 3-5, ring type flap valve, 3-6, central row sandpipe, 3-7, distribution inner casing, 3-8, air rammer, 2, distribution cover.
Detailed description of the invention
With reference to Figure of description, the utility model discloses a kind of big size hole reacting cycle air hammer hammer body structure, overlap 2 by top connection 3-3, outer shell 1, ring type flap valve 3-5, central row sandpipe 3-6, distribution inner casing 3-7, air rammer 3-8 and distribution and form.Reacting cycle air hammer hammer body B size is comparatively large, and diameter is 400mm, and when gas injection rate 60m3/min time, ballistic work can reach 5650J.Top connection 3-3 upper end is nonstandard rectangle coarse-pitch thread (box), and the outer tube 1-1 pin end of double-walled conversion pipe nipple A coordinates; Lower end is nonstandard rectangle coarse-pitch thread (pin thread), and the box of outer shell 1 upper end matches.Top connection 3-3 external cylindrical surface is evenly offered the hole of 4 diameter 25mm, for dismantling top connection 3-3.Outer shell 1 top and bottom are box, and upper end connects top connection 3-3, and lower end connects spline housing.Distribution inner casing 3-7, distribution are overlapped 2, are matched in clearance between snap ring 3 and outer shell 1, and three is stacked on spline housing successively from top to bottom.Sediment outflow central tube 6 stage casing large diameter portion hangs on distribution inner casing 3-7, and lower end is inserted in bore bit body central hole.Ring type flap valve 3-5 is made up of valve plate and spring, and valve plate has seal groove, built-in O RunddichtringO, and valve plate is coordinated with contraction front in top connection 3-3 realized sealing by O RunddichtringO.Spring is carbon spring steel wires, and its modulus of elasticity is less, facilitates ring type flap valve 3-5 valve plate to open.Distribution inner casing 3-7 medium position radial direction evenly offers multiple air inlet port.Distribution is overlapped 2 upper surface normal direction and is evenly arranged several axial hole, and offer the radial hole of same quantity at external cylindrical surface, axial hole and radial hole run through mutually simultaneously, forms distribution runner.Air rammer 3-8 is hollow structure, and central row sandpipe 6 runs through and mistake from air rammer 3-8 center.Air rammer 3-8 can be freely up and down movable in the structure space of central row sandpipe 6, distribution inner casing 3-7, distribution cover 2 and bore bit body composition, can rotate freely centered by the axis of himself simultaneously.
Claims (6)
1. a big size hole reacting cycle air hammer hammer body structure, it is characterized in that: comprise top connection, outer shell, ring type flap valve, central row sandpipe, distribution inner casing, air rammer and distribution cover, the double-walled conversion pipe nipple of described top connection and reacting cycle air hammer passes through screwed connection, described outer shell is connected by the spline housing of screw thread with the slip-off preventing bore bit of reacting cycle air hammer, distribution inner casing, the snap ring of distribution cover and slip-off preventing bore bit successively seat on spline housing, air rammer is positioned at the cavity of distribution inner casing and the formation of distribution cover, pipe lower end grafting in central row sandpipe upper end and double-walled changing-over head, in footpath broad in the middle section press-in distribution inner casing, the bore bit body upper end of slip-off preventing bore bit is inserted in lower end, ring type flap valve is housed between central row sandpipe and top connection.
2. big size hole reacting cycle air hammer hammer body structure according to claim 1, it is characterized in that: ring type flap valve is made up of valve plate and spring, valve plate has seal groove, built-in O RunddichtringO, valve plate is coordinated with contraction front in top connection realized sealing by O RunddichtringO.
3. big size hole reacting cycle air hammer hammer body structure according to claim 2, is characterized in that: described spring is carbon spring steel wires.
4. big size hole reacting cycle air hammer hammer body structure according to claim 1, is characterized in that: described distribution inner casing medium position radial direction evenly offers multiple air inlet port.
5. big size hole reacting cycle air hammer hammer body structure according to claim 1, it is characterized in that: described distribution puts end face normal direction and is evenly arranged several axial hole, offer the radial hole of same quantity at external cylindrical surface, axial hole and radial hole run through mutually simultaneously, form distribution runner.
6. big size hole reacting cycle air hammer hammer body structure according to claim 1, it is characterized in that: described air rammer is hollow structure, central row sandpipe runs through and mistake from air rammer center, air rammer is freely up and down movable in the structure space that central row sandpipe, distribution inner casing, distribution cover and bore bit body form, and rotates freely centered by the axis of himself simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715278.7U CN204920775U (en) | 2015-09-16 | 2015-09-16 | Jumbo size well is with anti - circulating air hammer hammer block structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715278.7U CN204920775U (en) | 2015-09-16 | 2015-09-16 | Jumbo size well is with anti - circulating air hammer hammer block structure |
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| CN204920775U true CN204920775U (en) | 2015-12-30 |
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| CN201520715278.7U Active CN204920775U (en) | 2015-09-16 | 2015-09-16 | Jumbo size well is with anti - circulating air hammer hammer block structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287743A (en) * | 2020-04-10 | 2020-06-16 | 中国地质科学院探矿工艺研究所 | Air reverse circulation continuous sampling drilling system and process method for water-bearing stratum |
-
2015
- 2015-09-16 CN CN201520715278.7U patent/CN204920775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287743A (en) * | 2020-04-10 | 2020-06-16 | 中国地质科学院探矿工艺研究所 | Air reverse circulation continuous sampling drilling system and process method for water-bearing stratum |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200924 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |