CN204457764U - Sampler - Google Patents
Sampler Download PDFInfo
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- CN204457764U CN204457764U CN201520052999.4U CN201520052999U CN204457764U CN 204457764 U CN204457764 U CN 204457764U CN 201520052999 U CN201520052999 U CN 201520052999U CN 204457764 U CN204457764 U CN 204457764U
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- sampler
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Abstract
The utility model provides a kind of sampler, for picking up the coal ash in burned out area, comprise urceolus and be positioned at the inner core of urceolus, described inner core is fixed on described urceolus by connector, one end for picking up coal ash on described inner core is provided with core pawl, and the first hole of described core pawl and described urceolus is adjacent, described connector is cut under external force, described inner core is along urceolus axially-movable and drive described core pawl to move in described first hole, makes described core pawl close up and close described inner core.Sampler described in the utility model, under can being used in middle soft-type formation condition, this sampler does not need when sampling to cut off core simultaneously, avoids the situation of losing core or falling core.
Description
Technical field
The utility model relates to coal underground gasification technology field, refers in particular to a kind of sampler being easy to take coal ash.
Background technology
Underground coal gasification(UCG) a kind ofly melts the multidisciplinary comprehensive energy production new technology be integrated, and belongs to second generation coal-mining method, and its task is fuel gas by underground coal resource in situ conversion.In coal seam gasification and oil and gas well drilling industry, in order to better accurately grasp strata condition, generally can carry out part well section according to technological requirement and getting core, or carrying out the coring of full well section.In this new industry field of underground coal gasification(UCG), in order to the production coal gas of energy safety and stability, need grasp underground coal combustion case accurately and timely, during due to coal underground combustion, along with the movement of flame face, the continuous burned gasification in coal seam and form burned out area, to be within the scope of burned out area or to be all very scattered, broken on the stratum at burned out area edge, much burned coal ash can be generated within the scope of burned out area, in order to analyze the scope judging burned out area, usually needing to extract coal ash and carrying out sampling analysis.
Present stage, common coring tool was when burned out area carries out coring, as Chinese patent literature discloses a kind of sampler, for sampling the solid of underground burned out area, comprising: sleeve pipe, piston, drive rod and sample tap; Sleeve pipe comprises link and working end; Sample tap is arranged on the working end of sleeve pipe; Sleeve pipe is fixedly connected with outside carrying device by link; Piston is arranged in sleeve pipe; Piston is connected with sample tap by drive rod; Piston does straight reciprocating motion in sleeve pipe, and drives sample tap to open or close by drive rod.Although above-mentioned document is reasonable in design, structure is simple, easy to operate, can effectively sample the coal ash of underground burned out area, but there is following problem: above-mentioned sampler can only sample for the solid form of coal ash, be therefore applicable to the stratum that cementing properties well, is easily shaped, geology is harder.And for middle soft-type stratum, the coal ash formed due to burned out area is more scattered, broken, causes taking deleterious, time serious, even cannot take coal ash, thus reduce sampling yield rate, have a strong impact on and the analysis of burned out area scope is judged.
Utility model content
Therefore, be also easy in middle soft-type stratum smoothly by sampler that the core of burned out area takes out in well even the technical problems to be solved in the utility model is to overcome problem that when carrying out coring for middle soft-type stratum in prior art, yield rate is low thus provides a kind of.
For solving the problems of the technologies described above, the utility model provides a kind of sampler, for picking up the coal ash in burned out area, comprise urceolus and be positioned at the inner core of urceolus, described inner core is fixed on described urceolus by connector, one end for picking up coal ash on described inner core is provided with core pawl, and the first hole of described core pawl and described urceolus is adjacent, described connector is cut under external force, described inner core is along urceolus axially-movable and drive described core pawl to move in described first hole, makes described core pawl close up and close described inner core.
In an embodiment of the present utility model, the other end relative with core pawl on described inner core is respectively equipped with large ball seat and little ball seat, and described large ball seat is positioned at the second hole of described urceolus, and the diameter of described large ball seat is identical with the internal diameter in described second hole.
In an embodiment of the present utility model, the outer wall along described inner core between described large ball seat and little ball seat is provided with spout hole.
In an embodiment of the present utility model, described inner core is close to described little ball seat place and is provided with the piston moved axially along its inner core.
In an embodiment of the present utility model, described piston is radially provided with sealing ring.
In an embodiment of the present utility model, urceolus is fixed on the piston of described inner core by described connector.
In an embodiment of the present utility model, described connector is shear pin.
In an embodiment of the present utility model, the bottom of described urceolus is connected with chisel bit, and the top of described urceolus is connected with joint.
In an embodiment of the present utility model, described chisel bit and bit adapter are interconnected, and described bit adapter is fixed in the annular space of described inner core and described urceolus both sides.
In an embodiment of the present utility model, described chisel bit by screwed connection on urceolus.
Technique scheme of the present utility model compared with prior art has the following advantages:
At sampler described in the utility model, even if practicality is also very large under middle soft-type formation condition, this sampler does not need when sampling to cut off core simultaneously, only need drop into the steel ball varied in size in sampler can complete sampling operation, and avoids the situation of losing core or falling core.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
The schematic diagram of Fig. 1 when to be that the bead of sampler described in the utility model is setting close;
Fig. 2 is the schematic diagram of the large ball seat of sampler described in the utility model when closing.
Detailed description of the invention
As shown in Figure 1, the utility model provides a kind of sampler, for picking up the coal ash in burned out area, comprise urceolus 11 and be positioned at the inner core 12 of urceolus 11, described inner core 12 is fixed on described urceolus 11 by connector 13, described inner core 12 is provided with core pawl 121 for the one end of picking up coal ash, and described core pawl 121 is adjacent with the first hole 111 of described urceolus 11, described connector 13 is cut under external force, described inner core 12 is along urceolus 11 axially-movable and drive described core pawl 121 to move in described first hole 111, described core pawl 121 is closed up and closes described inner core 12.
Above-mentioned is core technology scheme of the present utility model, described sampler comprises urceolus 11 and is positioned at the inner core 12 of urceolus 11, described inner core 12 is fixed on described urceolus 11 by connector 13, described inner core 12 is provided with core pawl 121 for the one end of picking up coal ash, coal ash constantly can be picked up in the cavity of described inner core 12 by described core pawl 121, facilitate the operation that core drill enters, described core pawl 121 is adjacent with the first hole 111 of described urceolus 11, described connector 13 is cut under the pressure of slush pump, cause described inner core 12 along urceolus 11 axially-movable and drive described core pawl 121 to move in described first hole 111, thus described core pawl 121 is closed up and closes described inner core 12, rock sample due to burned out area is coal ash, even if for middle soft-type stratum, coal ash is more scattered, broken, but because the coal ash poured into wherein is all enclosed in described inner core 12 by described core pawl 121, avoid the coal ash picked up in described inner core 12 to drop problem, thus be easy to sample to take out from down-hole smoothly, improve sampling yield rate, more be conducive to judging the analysis of burned out area scope.
Described sampler is when down-hole pickup coal ash, in order to be beneficial to construction, usually need to utilize ground slush pump that slurry liquid is sent to sampler by drilling tool, power when on the one hand the pressure of slurry liquid can provide underground work, on the other hand, described slurry liquid is beneficial to sampler down-hole pickup coal ash.Enter operation to realize core drill efficiently and ensure the sample of pickup in described inner core 12 not by mud contamination, on described inner core 12, the other end relative with core pawl 121 is respectively equipped with large ball seat 122 and little ball seat 123, when dropping into the bead identical with the diameter of described little ball seat 123, because bead has blocked described little ball seat 123 completely, the cavity between described little ball seat 123 and described core pawl 121 is caused to be isolated from the outside, prevent slurry liquid to flow in described inner core 12, the rock core avoiding described inner core 12 is washed.Described large ball seat 122 is positioned at the second hole 112 of described urceolus 11, and the diameter of described large ball seat 122 is identical with the internal diameter in described second hole 112, when dropping into the large ball identical with the diameter of described large ball seat 122, because large ball has blocked described large ball seat 122 completely, described inner core 12 entirety is isolated from the outside, the pressure of described slush pump is caused sharply to raise, under the pressure of described slush pump, described connector 13 is cut, promoting described inner core 12 along urceolus 11 axially-movable drives described core pawl 121 to move in described first hole 111, as shown in Figure 2, thus make the distortion of described core pawl 121 close up and close the coal ash and core that have picked up described inner core 12 inside.
In order to ensure that described sampler carries out core drill efficiently and enters operation, spout hole 124 is provided with along the outer wall of described inner core 12 between described large ball seat 122 and little ball seat 123, when dropping into the bead identical with the diameter of described little ball seat 123, because bead has blocked described little ball seat 123 completely, for the cavity between described large ball seat 122 and little ball seat 123, by described spout hole 124, slurry liquid is constantly discharged from the annular clearance between described inner core 12 and described urceolus 11, not only the pressure of mud can be changed into the power of work, and be beneficial to sampler pickup sample.In the utility model, the annular clearance between described inner core 12 and described urceolus 11 is between 10mm ~ 15mm.
In order to ensure the sample of pickup in described inner core 12 not by mud contamination, described inner core 12 is close to described little ball seat 123 place and is provided with the piston 125 moved axially along its inner core 12, when dropping into the large ball identical with the diameter of described large ball seat 122, because large ball has blocked described large ball seat 122 completely, described inner core 12 entirety is isolated from the outside, the pressure of described slush pump is caused sharply to raise, under the pressure of described slush pump, described piston 125 cuts off the connector 13 of fixing inner core 12 under the effect of pump pressure, thus promote described inner core 12 along urceolus 11 axially-movable, and drive described core pawl 121 to move in described first hole 111, force described core pawl 121 to be out of shape close up and close the coal ash and core that have picked up described inner core 12 inside.
In order to ensure that described inner core 12 is fixed on described urceolus 11, by described connector 13, urceolus 11 is fixed on the piston 125 of described inner core 12.Described piston 125 is radially provided with sealing ring 126, after described little ball seat 123 is by shutoff, slurry liquid can be avoided to enter cavity between described little ball seat 123 and described core pawl 121, and prevent slurry liquid to flow in described inner core 12, the rock core avoiding described inner core 12 is washed.
Carry out core drill enter operation to realize described sampler, the bottom of described urceolus 11 is connected with chisel bit 14, the top of described urceolus 11 is connected with joint 15, described joint 15 is connected with top drilling tool, described chisel bit 14 is interconnected with bit adapter 16, and described bit adapter 16 is fixed on described inner core 12 with in the annular space of described urceolus 11 both sides, in work progress, if drill bit is damaged, described bit adapter 16 is utilized to be convenient to more bit change; Because described inner core 12 is fixed on described urceolus 11 by means of only connector 13, in order to ensure above-mentioned fixed effect, described bit adapter 16 can also support described inner core 12, plays the effect of righting inner core 12.Described chisel bit 14 on urceolus 11, thus ensure that the bottom of described urceolus 11 and the stable connection of described chisel bit 14 by screwed connection.
The method of work of sampler described in the utility model is as follows:
Before burned out area carries out sampling operation, first in ground detection and assemble sampler, described sampler is transferred and prepares sampling to during target well depth.
Secondly, small ball is thrown in from the top of described sampler, after small ball drops into, just in time fall on the little ball seat 123 in the middle of described inner core 12, described small ball is made to shut described inner core 12, mud is stoped to flow in described inner core 12, inner core rock core is prevented to be washed, open slush pump, mud is discharged from the spout hole 124 between described urceolus 11 and inner core 12, circulation is set up with this, core drill can be carried out normally after setting up circulation and enter operation, when core drill enters operation, described chisel bit 14 creeps into and gets core under the pressure effect of mud, pump pressure when normal core drill enters is between 4MPa to 5MPa, when chisel bit all creeps into described well depth, sample drilling is complete, now close slush pump.
Then, have high input steel ball above sampler, after big steel ball falls into described large ball seat 122, open slush pump, due to spout hole 124 can be blocked after large ball input, mud cannot be discharged from sampler inside, the pressure of slush pump is caused sharply to raise, when pump pressure is increased between 7MPa to 8MPa, described piston 125 cuts off the connector 13 of fixing described inner core 12 under the effect of pump pressure, thus promote described inner core 12 along urceolus 11 axially-movable, and drive described core pawl 121 to move in described first hole 111, force described core pawl 121 to be out of shape to close up, shut the coal ash and core that have picked up described inner core 12 inside, now close slush pump.
Finally, described sampler is proposed to ground, completes sampling operation.
Sampler described in the utility model, described sampler body length is about 10 meters, and the length of effectively taking of core is 9/10ths of sampler overall length.Described connector 13 can be shear pin or other fixture, and described core pawl 121 is in elastic body, and the first hole 111 of described urceolus 11 can be bellmouth, thus under the effect of pump pressure, be conducive to described core pawl 121 to be close in described first hole 111.
Sampler described in the utility model, is not limited to the coal ash for picking up in burned out area, also may be used in open hole well and sleeve pipe, even can be used for picking up any loose material, can also be applied in fishing, salvage some little junks of down-hole.Wherein dimensions is respectively: the diameter phi 135mm of described chisel bit 14, sampler body diameter is φ 127mm, so when general conventional well needs to sample operation, this instrument can be used, therefore range of application is comparatively extensive, even if practicality is also very large under middle soft-type formation condition, this sampler is different from general conventional coring tool when sampling simultaneously needs to cut off core, the utility model only need drop into the steel ball varied in size in sampler can complete sampling operation, thus avoids the situation of losing core or falling core.
To sum up, technique scheme of the present utility model has the following advantages:
1. sampler described in the utility model, described sampler comprises urceolus and is positioned at the inner core of urceolus, described inner core is fixed on described urceolus by connector, one end for picking up coal ash on described inner core is provided with core pawl, coal ash constantly can be picked up in the cavity of described inner core by described core pawl, facilitate the operation that core drill enters, first hole of described core pawl and described urceolus is adjacent, under the pressure of described slush pump, described connector is cut, cause described inner core along urceolus axially-movable and drive described core pawl to move in described first hole, thus make described core pawl close up and close described inner core, avoid the coal ash picked up in described inner core to drop problem, even if for middle soft-type stratum, coal ash is more scattered, broken, but because the coal ash poured into wherein is all enclosed in described inner core by described core pawl, thus be easy to sample to take out from down-hole smoothly, improve sampling yield rate, more be conducive to judging the analysis of burned out area scope.
2. sampler described in the utility model, from sample drilling to protection core, has all come by mud pressure, only once need transfer drilling tool, just can complete sampling operation, therefore simple, convenient.
3. sampler described in the utility model, better ensure that the integrality of core qualitatively, greatly strengthen coring recovery rate, technique research and development is facilitated to judge the coal combustion situation of burned out area and burning face moving direction, so in burned out area sampling operation, have very large meaning.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (10)
1. a sampler, for picking up the coal ash in burned out area, comprise urceolus (11) and be positioned at the inner core (12) of urceolus (11), described inner core (12) is fixed on described urceolus (11) by connector (13), it is characterized in that: described inner core (12) is provided with core pawl (121) for the one end of picking up coal ash, and described core pawl (121) is adjacent with first hole (111) of described urceolus (11), described connector (13) is cut under external force, described inner core (12) is along urceolus (11) axially-movable and drive described core pawl (121) to move in described first hole (111), described core pawl (121) is made to close up and close described inner core (12).
2. sampler according to claim 1, it is characterized in that: the upper other end relative with core pawl (121) of described inner core (12) is respectively equipped with large ball seat (122) and little ball seat (123), described large ball seat (122) is positioned at second hole (112) of described urceolus (11), and the diameter of described large ball seat (122) is identical with the internal diameter of described second hole (112).
3. sampler according to claim 2, is characterized in that: be provided with spout hole (124) along the outer wall of described inner core (12) between described large ball seat (122) and little ball seat (123).
4. sampler according to claim 2, is characterized in that: described little ball seat (123) place of the upper next-door neighbour of described inner core (12) is provided with the piston (125) moved axially along its inner core (12).
5. sampler according to claim 4, is characterized in that: described piston (125) is radially provided with sealing ring (126).
6. sampler according to claim 4, is characterized in that: urceolus (11) is fixed on the piston (125) of described inner core (12) by described connector (13).
7. the sampler according to claim 1 or 6, is characterized in that: described connector (13) is shear pin.
8. sampler according to claim 1, is characterized in that: the bottom of described urceolus (11) is connected with chisel bit (14), and the top of described urceolus (11) is connected with joint (15).
9. sampler according to claim 8, it is characterized in that: described chisel bit (14) and bit adapter (16) are interconnected, and described bit adapter (16) is fixed on described inner core (12) with in the annular space of described urceolus (11) both sides.
10. sampler according to claim 9, is characterized in that: described chisel bit (14) by screwed connection on urceolus (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052999.4U CN204457764U (en) | 2015-01-26 | 2015-01-26 | Sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052999.4U CN204457764U (en) | 2015-01-26 | 2015-01-26 | Sampler |
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| CN204457764U true CN204457764U (en) | 2015-07-08 |
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| CN201520052999.4U Active CN204457764U (en) | 2015-01-26 | 2015-01-26 | Sampler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441981A (en) * | 2016-08-30 | 2017-02-22 | 中煤科工集团重庆研究院有限公司 | Coal sample drilling sealing detection device |
| CN113202464A (en) * | 2021-01-13 | 2021-08-03 | 中国石油天然气股份有限公司 | Geological dessert surveying device |
-
2015
- 2015-01-26 CN CN201520052999.4U patent/CN204457764U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441981A (en) * | 2016-08-30 | 2017-02-22 | 中煤科工集团重庆研究院有限公司 | Coal sample drilling sealing detection device |
| CN106441981B (en) * | 2016-08-30 | 2019-01-29 | 中煤科工集团重庆研究院有限公司 | Coal sample drills through package seal checker |
| CN113202464A (en) * | 2021-01-13 | 2021-08-03 | 中国石油天然气股份有限公司 | Geological dessert surveying device |
| CN113202464B (en) * | 2021-01-13 | 2023-07-25 | 中国石油天然气股份有限公司 | Geological dessert survey device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170214 Address after: 065001 Hebei economic and Technological Development Zone, Langfang science and Technology Park in the Southern District of B building, room 522 Patentee after: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang Xinyuan host new Austrian Science and Technology Park in Southern District Patentee before: ENN Coal Gasification Co., Ltd. |