CN104453759B - Ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device - Google Patents
Ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device Download PDFInfo
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- CN104453759B CN104453759B CN201410739874.9A CN201410739874A CN104453759B CN 104453759 B CN104453759 B CN 104453759B CN 201410739874 A CN201410739874 A CN 201410739874A CN 104453759 B CN104453759 B CN 104453759B
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- outer barrel
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- cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
- E21B25/04—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of ground drilling coal bed gas, rock stratum Gas contents to test sealing core drilling device, including：Coring inner drum, core bit, outer barrel, actuating unit, actuating mechanism, coring inner drum is arranged in the outer barrel, one end of the outer barrel is provided with tool joint, and the other end setting core bit of the outer barrel, the actuating unit, actuating mechanism are arranged in outer barrel.The present invention can realize that fixed point is closed and take coal（Rock）Heart sample, it is long to efficiently solve existing coring equipment sample exposure duration after the coal heart is taken, and loss gas loss is serious, gas（Coal bed gas）The technical problems such as assay inaccuracy, and then provide more structurally sound basic data for coal mine gas hazard management and coal bed gas resource exploration and development etc..
Description
Technical field
The invention belongs to safety of coal mines and technical field of coalbed methane exploration and development, and present invention relates particularly to a kind of ground brills
Well coal bed gas, rock stratum Gas content test sealing core drilling device.
Background technology
Coal bed gas（Gas）Content is to characterize the important parameter of coal seam reservoirs, is ground coal bed gas（Gas）Resource exploration, production
It can prediction and the important evidence of well pattern layout design；In underground coal mine, coal bed gas（Gas）Content is that mine gas emission rate is pre-
Survey, Occurrence Regularity of coal bed gas research and Coal Seam Outburst Hazard prediction, Design of Mine Ventilation and lectotype selection and gas pumping
The important evidence of the work such as engineering design.Therefore, research is accurate measures coal bed gas（Gas）Content coring equipment is provided in coal bed gas
Source exploration and development and coal mine gas hazard management etc. are respectively provided with important realistic meaning.
At present, it is mainly used for oil gas or natural gas in the sealing core drilling or coring drilling with keep up pressure equipment of petroleum gas field use
The exploration and development of hydrate, due to the special process and reservoir of oil and gas of such equipment operation and the otherness in coal seam, no
It is suitable for coal bed gas（Gas）The sample collection that content accurately measures.In coal exploration and coal bed gas resource exploration process
Coal bed gas is generally carried out using basket（Gas）Assay sample collection, the equipment is in sample collection, sample is promoted and ground
During the leakage cruelly of face, coal core sample is lost in the process in no air-tight state, a large amount of gas of sample, causes coal bed gas
（Gas）Assay is not allowed.Coal mine underground coal bed gas（Gas）There are three types of modes at present for sample collection in assay：One
It is fluted drill, which cannot extract the complete coal heart, the coal dust being ground into drilling process can only be extracted in aperture, the equipment is not
The gas loss problems during sample collection can be solved, but also can not achieve the fixed point acquisition of sample；Second is that monotubular or double
Cylinder is cored pipe, which still cannot solve sample collection, move back brill and the coal heart take out during gas loss problems；Third, underground
Have sealing core drilling equipment, which can realize sealing core drilling, but the complexity of the equipment operation technique, applicable elements by
Certain restriction, field popularization application receive certain limitation.
Invention content
To solve existing technical problem, the embodiment of the present invention provides a kind of ground drilling coal bed gas, rock stratum gas contains
Measure examination sealing core drilling device.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is realized in：
The embodiment of the present invention provides a kind of ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device, the device
Including：Coring inner drum, core bit, outer barrel, actuating unit, actuating mechanism are arranged coring inner drum, the outer barrel in the outer barrel
One end be provided with tool joint, the other end setting core bit of the outer barrel, between the coring inner drum and core bit
It is provided with and cuts heart seal ball-valve, the actuating unit, actuating mechanism are arranged in outer barrel；The actuating unit include spring,
Power tube, spring overhead gage, spring lower baffle plate, the power tube are arranged between outer barrel and inner cylinder, the power tube and outer barrel
Between side set gradually spring overhead gage, spring lower baffle plate, be provided between the spring overhead gage, spring lower baffle plate to
A few spring；Including blocking up cylinder in startup steel ball, steel ball, starting pushing cylinder, the startup pushing cylinder is arranged on to be taken the actuating mechanism
One end of intracardiac cylinder, and connect with the inner cylinder top connection being arranged in coring inner drum, the side for starting pushing cylinder is provided with
Upper sealing valve body, the end of the inner cylinder top connection are connect with the coal heart baffle being vertically set in coring inner drum, the startup
Setting starts steel ball, cylinder is blocked up in steel ball between pushing cylinder and power tube, and the startup pushing cylinder is provided with close to one end of tool joint
Bearing group.
In said program, one end of the power tube is provided with righting sleeve.
In said program, sealing rubber ring is arranged with outside the inner cylinder top connection.
Compared with prior art, beneficial effects of the present invention：
The present invention can realize that fixed point is closed and take coal（Rock）Heart sample efficiently solves existing coring equipment and is taking coal
Sample exposure duration is long after the heart, and loss gas loss is serious, gas（Coal bed gas）The technical problems such as assay inaccuracy, Jin Erwei
Coal mine gas hazard management and coal bed gas resource exploration and development etc. provide more structurally sound basic data.
Description of the drawings
Fig. 1 is a kind of ground drilling coal bed gas provided in an embodiment of the present invention, rock stratum Gas content tests sealing core drilling device
Structure diagram.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The embodiment of the present invention provides a kind of ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device, such as Fig. 1 institutes
Show, which includes：Coring inner drum 4, core bit 18, outer barrel 2, actuating unit, actuating mechanism are arranged in the outer barrel 2 and take
Intracardiac cylinder 4, one end of the outer barrel 2 are provided with tool joint 1, the other end setting core bit 18 of the outer barrel 2, the brill
1 lower end of knock-off joint is connect by screw thread with outer barrel 2, and 2 lower end of outer barrel is connect by screw thread with core bit 18, the drilling rod
Connector 1, outer barrel 2, core bit 18 are formed to be adapted cylindric with drilling, and the outer barrel 2, which plays, connects drill bit 1 and drill string
And the effect of drilling machine torque and axial force is transmitted, it has higher requirements to 2 intensity of outer barrel；The actuating unit, actuating mechanism are all provided with
It puts in outer barrel 2, the coring inner drum 4, actuating unit and actuating mechanism are encapsulated in inside outer barrel 2, and the coring inner drum 4 uses
Thread forms are connect by bearing group 5 with tool joint 1；The actuating unit is including on spring 14, power tube 3, push rod, spring
Baffle 13, spring lower baffle plate 15, the power tube 3 are arranged between outer barrel 2 and coring inner drum 4, the power tube 3 and outer barrel 2
Between side set gradually spring overhead gage 13, spring lower baffle plate 15, between the spring overhead gage 13, spring lower baffle plate 15
It is provided at least one spring 14；The actuating mechanism is including blocking up cylinder 8 in startup steel ball 7, steel ball, starting pushing cylinder 9, the startup
Pushing cylinder 9 is arranged on one end of coring inner drum 4, and is connect with the inner cylinder top connection 10 being arranged in coring inner drum 4, the inner cylinder
Top connection 10 is used with inner cylinder 4 and is threadedly coupled, the end of the inner cylinder top connection 10 and the coal being vertically set in coring inner drum 4
Heart baffle 12 connects, described to start setting startup steel ball 7 between pushing cylinder 9 and power tube 3, block up cylinder 8, the startup pushing cylinder in steel ball
9 are provided with bearing group 5 close to one end of tool joint 1, and the power tube 3 is fixed on by starting the position-limiting action of steel ball 7 and taken
Spring 14 is compressed and fixed by spring overhead gage 13, spring lower baffle plate 15 by intracardiac 4 end of cylinder, downside, the startup pushing cylinder 9
It is connect by screw thread with coal heart baffle 12, cylinder 8 is blocked up in upper end support steel ball.
One end of the power tube 3 is provided with righting sleeve 16.
The side for starting pushing cylinder 9 is provided with upper sealing valve body 6, and caulking gum is arranged with outside the inner cylinder top connection 10
Circle 11.It is provided between the coring inner drum 4 and core bit 18 and cuts heart seal ball-valve 17.The seal compression rubber ring 11 with
Coal heart baffle 12 is connected with inner cylinder top connection 10 using high temperature bond mode, and 4 lower end of coring inner drum is by screw thread and cuts the heart
Seal ball-valve 17 connects, and 17 lower end of heart seal ball-valve of cutting is contacted with 18 end face of core bit.
The present invention is connect by drilling rod with drilling machine, is can be controlled in precalculated position progress coal core sample and is taken, with column drill
The propulsion of driver drilling rod, coal core sample are constantly entered in sealing core drilling inner cylinder 4.After coal core sample fills coring inner drum 4, the coal heart
Sample pushes coal heart baffle 12 to move backward, and drives in steel ball and moved after stifled cylinder 8, and actuating mechanism linkage is closed on coring inner drum 4
The upper sealed valve 6 at end；Start in steel ball 7 while shifting after stifled cylinder 8 in the steel ball and move, startup 14 pushing mechanism of spring pushes away
It is dynamic to cut heart Sealing ball-valve 17, the coal heart is cut off, and close 4 lower end ball valve of coring inner drum.
The present invention is on mechanism by itself impetus into 4 sample of coring inner drum, and ensure to core takes
Rate and success rate, actuating mechanism and spring and its coordinated signals are mechanism modes, not by drilling fluid and drilling fluid delivery pipe
The control of the leakproofness of remittance etc., the equipment entirely core processing efficient, quick, disturbing factor is few.According to coal of coring（Rock）
The difference of layer mechanical characteristic, can freely replace dynamic structure（Spring）, there is good exchange performance, to ensure enough to cut the heart
Power smoothly realizes sealing core drilling.
Claims (3)
1. a kind of ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device, which is characterized in that the device includes：It takes
Intracardiac cylinder（4）, core bit（18）, outer barrel（2）, actuating unit, actuating mechanism, the outer barrel（2）Inside it is arranged coring inner drum
（4）, the outer barrel（2）One end be provided with tool joint（1）, the outer barrel（2）The other end setting core bit（18）, institute
State coring inner drum（4）With core bit（18）Between be provided with and cut heart seal ball-valve（17）, the actuating unit, actuating mechanism are equal
It is arranged on outer barrel（2）It is interior；The actuating unit includes spring（14）, power tube（3）, spring overhead gage（13）, spring lower baffle plate
（15）, the power tube（3）It is arranged on outer barrel（2）With inner cylinder（4）Between, the power tube（3）With outer barrel（2）Between side
Set gradually spring overhead gage（13）, spring lower baffle plate（15）, the spring overhead gage（13）, spring lower baffle plate（15）Between set
It is equipped at least one spring（14）；The actuating mechanism includes starting steel ball（7）, cylinder is blocked up in steel ball（8）, start pushing cylinder（9）, institute
State startup pushing cylinder（9）It is arranged on coring inner drum（4）One end, and with being arranged on coring inner drum（4）Interior inner cylinder top connection
（10）Connection, the startup pushing cylinder（9）Side be provided with upper sealing valve body（6）, the inner cylinder top connection（10）End with
It is vertically set on coring inner drum（4）Interior coal heart baffle（12）Connection, the startup pushing cylinder（9）With power tube（3）Between set
Start steel ball（7）, cylinder is blocked up in steel ball（8）, the startup pushing cylinder（9）Close to tool joint（1）One end be provided with bearing group
（5）.
2. ground drilling coal bed gas according to claim 1, rock stratum Gas content test sealing core drilling device, feature exists
In：The power tube（3）One end be provided with righting sleeve（16）.
3. ground drilling coal bed gas according to claim 1 or 2, rock stratum Gas content test sealing core drilling device, feature
It is：The inner cylinder top connection（10 ）It is arranged with sealing rubber ring outside（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739874.9A CN104453759B (en) | 2014-12-08 | 2014-12-08 | Ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739874.9A CN104453759B (en) | 2014-12-08 | 2014-12-08 | Ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104453759A CN104453759A (en) | 2015-03-25 |
| CN104453759B true CN104453759B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410739874.9A Active CN104453759B (en) | 2014-12-08 | 2014-12-08 | Ground drilling coal bed gas, rock stratum Gas content test sealing core drilling device |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806341B (en) * | 2017-12-19 | 2020-09-15 | 焦作煤业（集团）有限责任公司 | Coal mine deep hole fixed point airtight sampling device and sampling method |
| CN108547614B (en) * | 2018-06-20 | 2023-05-23 | 河南理工大学 | Pressure-maintaining airtight coal sample collection device and collection method |
| CN110700781B (en) * | 2018-07-09 | 2021-11-23 | 中国石油化工股份有限公司 | Shale fluid-retaining closed coring device and method |
| CN109916663B (en) * | 2019-04-18 | 2021-06-08 | 中煤科工集团重庆研究院有限公司 | Dislocation closed type sealed sampling device and using method thereof |
| CN110454105B (en) * | 2019-08-27 | 2022-01-28 | 重庆安标检测研究院有限公司 | In-situ test system and method for gas content of coal mine underground coal seam while drilling |
| CN111236872B (en) * | 2020-01-17 | 2021-10-29 | 中煤科工集团西安研究院有限公司 | Directional rope core drill and drilling method thereof |
| CN115217428B (en) * | 2021-04-20 | 2024-03-26 | 中国石油天然气股份有限公司 | Shale gas and rock core pressure maintaining sealing sampling device and method |
| CN113833407A (en) * | 2021-09-07 | 2021-12-24 | 中煤科工集团西安研究院有限公司 | Drill bit for drilling fixed-point airtight coring |
| CN113653455B (en) * | 2021-10-19 | 2022-01-28 | 中煤科工集团西安研究院有限公司 | Coal seam and soft rock stratum drilling while-drilling airtight coring device and method |
| CN114233223A (en) * | 2021-11-24 | 2022-03-25 | 中煤科工集团西安研究院有限公司 | Pressure-maintaining and quick coring device for coal rock strata of ground well |
| CN114396240B (en) * | 2022-02-09 | 2023-05-30 | 贵州省矿山安全科学研究院有限公司 | Underground low-temperature airtight coal core drilling device and method for coal mine |
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| CN104453759A (en) | 2015-03-25 |
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