CN106124243A - Coal seam gas-bearing capacity measures advanced freezing sampling method - Google Patents
Coal seam gas-bearing capacity measures advanced freezing sampling method Download PDFInfo
- Publication number
- CN106124243A CN106124243A CN201610429079.9A CN201610429079A CN106124243A CN 106124243 A CN106124243 A CN 106124243A CN 201610429079 A CN201610429079 A CN 201610429079A CN 106124243 A CN106124243 A CN 106124243A
- Authority
- CN
- China
- Prior art keywords
- coal seam
- core
- fluid delivery
- coring
- delivery tube
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of coal seam gas-bearing capacity and measure advanced freezing sampling method, including step: 1), use core plugging notifying mechanism of rope core drilling to creep into stop creeping into operation to distance objective coal surface about 0.2m；2), by fluid delivery tube it is put in boring, and makes the end of fluid delivery tube close to foot of hole；3), from ground by liquid nitrogen pump, cryogen is persistently pumped into foot of hole by fluid delivery tube, makes below foot of hole 3 5m region be refrigerated to sub-zero frozen state；4), fluid delivery tube proposed, then under enter the corer of core plugging notifying mechanism of rope core drilling, quickly carry out coring drilling operation；5), when creeping into 3m, stop creeping into operation, quickly corer is carried to earth's surface, and rapidly sample is loaded in hermetically sealed can.The present invention can guarantee that and obtains complete coal seam core sample when coring operation, and ensures that coal seam core sample does not occur desorbing loss creeping into, in migration process to greatest extent, can keep the gas content state in situ of coal seam sample.
Description
Technical field
The present invention relates to drilling in coal sampling technique field, measure drive sampling skill particularly to a kind of coal seam gas-bearing capacity
Art.
Background technology
It is the key technology means obtaining coal seam gas-bearing capacity that coal seam gas-bearing capacity measures drive sampling, taking currently mainly
Sample means are reacting cycle pressure wind sampling and corer sampling method, coal seam are being crept into operation and coal sample migration to earth's surface mistake
Cheng Zhong, is disturbed due to coal seam and is in atmosphere pressure state in coal sample migration process, and the gas of coal seam sample adsorption can be sent out
Raw rapid desorbing, the gas bearing capacity generally taken to earth's surface coal sample can not reflect coal seam gas-bearing capacity in situ, and coal seam gas-bearing capacity is inclined
Low, cause coal bed gas resource reserves are underestimated and coal production outburst prevention work produces the problems such as misdirection.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of coal seam gas-bearing capacity and measure advanced freezing sampling method, to solve
Drilling process that certainly sampling of existing coal-bed gas exists and sample migration are to the skill of sample desorption of mash gas loss during earth's surface
Art problem.
Coal seam gas-bearing capacity of the present invention measures advanced freezing sampling method, comprises the following steps:
1), using compressed air as scouring media, use core plugging notifying mechanism of rope core drilling to carry out normal not coring and creep into operation, until
It is drilled into distance objective coal surface about 0.2m to stop creeping into operation, earth's surface drilling rod is dismantled and is suspended on rig；
2), fluid delivery tube adiabatic less than borehole wire-line coring drilling rod internal diameter and tube wall for external diameter is transferred by drilling rod center
In boring, make the end of fluid delivery tube close to foot of hole；
3), from ground by liquid nitrogen pump, liquid nitrogen or liquid carbon dioxide or other cryogens are passed through fluid delivery tube
Persistently it is pumped into foot of hole, makes the interior liquid nitrogen keeping certain liquid height of boring or liquid carbon dioxide or other cryogens
More than 2 hours, the stratum in below foot of hole 3-5m region and target coal seam is made to be refrigerated to sub-zero frozen state；
4), complete refrigeration operation after, stop liquid nitrogen pump, rapidly in borehole wire-line coring drilling rod propose fluid delivery tube, then under
Enter the corer of core plugging notifying mechanism of rope core drilling, connect the drilling rod in boring and rig, quickly carry out coring drilling operation；
5), coring is when creeping into 3m, stops creeping into operation, quick-release earth's surface rig and borehole wire-line coring drilling rod, and by hole
Borehole wire-line coring drilling rod hangs on rig, under enter wire line coring fisher the corer of core plugging notifying mechanism of rope core drilling carried to earth's surface, and
Rapidly the coal seam core sample that freezes in core plugging notifying mechanism of rope core drilling corer is loaded in hermetically sealed can.
Beneficial effects of the present invention:
Coal seam gas-bearing capacity of the present invention measures advanced freezing sampling method, uses cryogen by leading for intact coal seam
Freezing, is greatly reduced the temperature intending thief coal interval, makes the gas of absorption in coal seam the most also be not susceptible to desorbing,
Make the moisture glaciation in coal seam simultaneously, the hole runner in coal seam is blocked, reduce further coal-bed gas and solve
Inhale the probability of loss, the integrity that coal seam rock core can be improved the while of freezing of coal seam moisture, it is ensured that the energy when coring operation
The coal seam core sample that enough acquisition sampling sections are complete, associating wire line coring drilling process, makes the coal seam core sample that brill obtains simultaneously
In the case of freezing, fast lifting to earth's surface, can ensure that coal seam core sample is creeping into, in migration process not to greatest extent
There is desorbing loss, the gas content state in situ of coal seam sample can be kept.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
The present embodiment coal seam gas-bearing capacity measures advanced freezing sampling method, comprises the following steps:
1), using compressed air as scouring media, use core plugging notifying mechanism of rope core drilling to carry out normal not coring and creep into operation, until
It is drilled into distance objective coal surface about 0.2m (typically in the range of 0.15-0.25m) to stop creeping into operation, earth's surface drilling rod is unloaded
Open and be suspended on rig；
2), fluid delivery tube adiabatic less than borehole wire-line coring drilling rod internal diameter and tube wall for external diameter is transferred by drilling rod center
In boring, make the end of fluid delivery tube close to foot of hole；
3), from ground by liquid nitrogen pump, liquid nitrogen or liquid carbon dioxide or other cryogens are held by fluid delivery tube
Continue and be pumped into foot of hole, make the interior liquid nitrogen keeping certain liquid height of boring or liquid carbon dioxide or other cryogens 2
More than hour, the stratum in below foot of hole 3-5m region and target coal seam is made to be refrigerated to sub-zero frozen state；
4), complete refrigeration operation after, stop liquid nitrogen pump, rapidly in borehole wire-line coring drilling rod propose fluid delivery tube, then under
Enter the corer of core plugging notifying mechanism of rope core drilling, connect the drilling rod in boring and rig, quickly carry out coring drilling operation；
5), coring is when creeping into 3m, stops creeping into operation, quick-release earth's surface rig and borehole wire-line coring drilling rod, and by hole
Borehole wire-line coring drilling rod hangs on rig, under enter wire line coring fisher the corer of core plugging notifying mechanism of rope core drilling carried to earth's surface, and
Rapidly the coal seam core sample that freezes in core plugging notifying mechanism of rope core drilling corer is loaded in hermetically sealed can.
The present embodiment coal seam gas-bearing capacity measures advanced freezing sampling method, uses cryogen by intact coal seam first
Row freezing, is greatly reduced the temperature intending thief coal interval, makes the gas of absorption in coal seam the most also be not susceptible to solve
Inhale, make the moisture glaciation in coal seam simultaneously, the hole runner in coal seam is blocked, reduce further coal-bed gas and occur
The probability of desorbing loss, the integrity that coal seam rock core can be improved the while of freezing of coal seam moisture, it is ensured that when coring operation
Can obtain the coal seam core sample that sampling section is complete, associating wire line coring drilling process, makes the coal seam core sample that brill obtains simultaneously
Product fast lifting to earth's surface, can ensure that coal seam core sample is creeping into, in migration process in the case of freezing to greatest extent
There is not desorbing loss, the gas content state in situ of coal seam sample can be kept.
Finally illustrating, above example is only in order to illustrate technical scheme and unrestricted, although with reference to relatively
The present invention has been described in detail by good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from objective and the scope of technical solution of the present invention, it all should be contained at this
In the middle of the right of invention.
Claims (1)
1. coal seam gas-bearing capacity measures advanced freezing sampling method, it is characterised in that: comprise the following steps:
1), using compressed air as scouring media, use core plugging notifying mechanism of rope core drilling to carry out normal not coring and creep into operation, until being drilled into
Distance objective coal surface about 0.2m stops creeping into operation, is dismantled by earth's surface drilling rod and is suspended on rig；
2), transfer to bore by drilling rod center by fluid delivery tube adiabatic less than borehole wire-line coring drilling rod internal diameter and tube wall for external diameter
In hole, make the end of fluid delivery tube close to foot of hole；
3), from ground by liquid nitrogen pump, liquid nitrogen or liquid carbon dioxide or other cryogens are continued pump by fluid delivery tube
Enter to foot of hole, in making boring, keep the liquid nitrogen of certain liquid height or liquid carbon dioxide or other cryogens 2 hours
Above, the stratum and the target coal seam that make below foot of hole 3-5m region are refrigerated to sub-zero frozen state；
4), complete refrigeration operation after, stop liquid nitrogen pump, rapidly in borehole wire-line coring drilling rod propose fluid delivery tube, then under enter rope
The corer of rope core bit, connects the drilling rod in boring and rig, quickly carries out coring drilling operation；
5), coring is when creeping into 3m, stops creeping into operation, quick-release earth's surface rig and borehole wire-line coring drilling rod, and by rope in hole
Coring drill rod hangs on rig, under enter wire line coring fisher the corer of core plugging notifying mechanism of rope core drilling carried to earth's surface, and rapidly
The coal seam core sample that freezes in core plugging notifying mechanism of rope core drilling corer is loaded in hermetically sealed can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429079.9A CN106124243A (en) | 2016-06-16 | 2016-06-16 | Coal seam gas-bearing capacity measures advanced freezing sampling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429079.9A CN106124243A (en) | 2016-06-16 | 2016-06-16 | Coal seam gas-bearing capacity measures advanced freezing sampling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106124243A true CN106124243A (en) | 2016-11-16 |
Family
ID=57470598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610429079.9A Pending CN106124243A (en) | 2016-06-16 | 2016-06-16 | Coal seam gas-bearing capacity measures advanced freezing sampling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106124243A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769240A (en) * | 2016-12-16 | 2017-05-31 | 重庆大学 | It is a kind of to mend cold liquid nitrogen refrigerating type coal gas sampler automatically |
| CN109000963A (en) * | 2018-08-30 | 2018-12-14 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of plastic concrete cut-off wall sampling method |
| CN110566147A (en) * | 2019-09-06 | 2019-12-13 | 西安科技大学 | Equipment and method for adopting coal core for low-temperature gas medium cooling drill bit |
| CN110646269A (en) * | 2019-11-11 | 2020-01-03 | 重庆大学 | Preparation method of porous medium hydrate sample with controllable hydrate distribution |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU620625A1 (en) * | 1973-11-30 | 1978-08-25 | Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского | Method of fighting sudden outbursts of coal and gas at crossing outburst-hazardous seam by mine working |
| SU757736A1 (en) * | 1978-09-05 | 1980-08-23 | Inst Gornogo Dela Imeni Skochi | Method of preventing sharp outbursts of rock, coal and gas during mining |
| SU1002600A1 (en) * | 1981-11-02 | 1983-03-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of avoiding rock and gas outbursts when driving mine working |
| US6378631B1 (en) * | 1998-07-29 | 2002-04-30 | James T. Aumann | Apparatus for recovering core samples at in situ conditions |
| CN1483902A (en) * | 2003-05-29 | 2004-03-24 | 中国矿业大学 | Method of distributing freezers for speeding up freezing soil and rock in local area |
| CN101105138A (en) * | 2007-08-15 | 2008-01-16 | 湖南科技大学 | Method for suppressing coal and gas outburst |
| CN101353952A (en) * | 2008-09-01 | 2009-01-28 | 中国矿业大学 | Coring method and apparatus for extracting downhole projecting coal bed integral coal core |
| CN102536243A (en) * | 2012-02-28 | 2012-07-04 | 重庆市能源投资集团科技有限责任公司 | Coal seam freezing type cross-drift coal uncovering method |
| CN104653134A (en) * | 2014-12-16 | 2015-05-27 | 吉林大学 | Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit |
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
| CN105134284A (en) * | 2015-08-03 | 2015-12-09 | 中国矿业大学 | Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection |
-
2016
- 2016-06-16 CN CN201610429079.9A patent/CN106124243A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU620625A1 (en) * | 1973-11-30 | 1978-08-25 | Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского | Method of fighting sudden outbursts of coal and gas at crossing outburst-hazardous seam by mine working |
| SU757736A1 (en) * | 1978-09-05 | 1980-08-23 | Inst Gornogo Dela Imeni Skochi | Method of preventing sharp outbursts of rock, coal and gas during mining |
| SU1002600A1 (en) * | 1981-11-02 | 1983-03-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of avoiding rock and gas outbursts when driving mine working |
| US6378631B1 (en) * | 1998-07-29 | 2002-04-30 | James T. Aumann | Apparatus for recovering core samples at in situ conditions |
| CN1483902A (en) * | 2003-05-29 | 2004-03-24 | 中国矿业大学 | Method of distributing freezers for speeding up freezing soil and rock in local area |
| CN101105138A (en) * | 2007-08-15 | 2008-01-16 | 湖南科技大学 | Method for suppressing coal and gas outburst |
| CN101353952A (en) * | 2008-09-01 | 2009-01-28 | 中国矿业大学 | Coring method and apparatus for extracting downhole projecting coal bed integral coal core |
| CN102536243A (en) * | 2012-02-28 | 2012-07-04 | 重庆市能源投资集团科技有限责任公司 | Coal seam freezing type cross-drift coal uncovering method |
| CN104653134A (en) * | 2014-12-16 | 2015-05-27 | 吉林大学 | Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit |
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
| CN105134284A (en) * | 2015-08-03 | 2015-12-09 | 中国矿业大学 | Gas extraction method based on horizontal orientation boring liquid nitrogen cycle freeze-thaw anti-reflection |
Non-Patent Citations (4)
| Title |
|---|
| 任浩洋 等: ""测定瓦斯含量取样方式存在问题分析及解决对策"", 《煤矿安全》 * |
| 沈萍 等: "《无机化学与化学分析》", 31 August 2011, 中国地质大学出版社 * |
| 王兆丰 等: ""低温环境对煤的瓦斯解吸抑制效应试验"", 《重庆大学学报》 * |
| 王轶波 等: ""低温条件下煤体瓦斯解吸规律研究"", 《中国煤炭》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769240A (en) * | 2016-12-16 | 2017-05-31 | 重庆大学 | It is a kind of to mend cold liquid nitrogen refrigerating type coal gas sampler automatically |
| CN106769240B (en) * | 2016-12-16 | 2019-04-23 | 重庆大学 | It is a kind of to mend cold liquid nitrogen refrigerating type coal gas sampler automatically |
| CN109000963A (en) * | 2018-08-30 | 2018-12-14 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of plastic concrete cut-off wall sampling method |
| CN110566147A (en) * | 2019-09-06 | 2019-12-13 | 西安科技大学 | Equipment and method for adopting coal core for low-temperature gas medium cooling drill bit |
| CN110646269A (en) * | 2019-11-11 | 2020-01-03 | 重庆大学 | Preparation method of porous medium hydrate sample with controllable hydrate distribution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205691360U (en) | Coal seam gas-bearing capacity measures advanced freezing sampler | |
| CN106124243A (en) | Coal seam gas-bearing capacity measures advanced freezing sampling method | |
| US5147111A (en) | Cavity induced stimulation method of coal degasification wells | |
| CN101864916A (en) | Hole bottom freezing cord coring drill and coring method thereof | |
| CN101514614B (en) | Dry ice sublimation hole bottom refrigerating and pressure keeping sampler and sampling method | |
| CN201835777U (en) | Hole bottom freezing rope core drill | |
| CN104653134B (en) | Liquid nitrogen gas hydrate hole-bottom frozen core plugging notifying mechanism of rope core drilling | |
| CN104061013B (en) | One utilizes freezing process to improve the infiltrative method of low-permeability coal seam and device | |
| US2033560A (en) | Refrigerating packer | |
| CN102942006B (en) | The method of sequestration of carbon dioxide | |
| CN105114030B (en) | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling | |
| CN109113613B (en) | Natural gas hydrate rotary type freezing pressure maintaining rope coring drilling tool and coring method | |
| CN105822341B (en) | A kind of hypotonic anti-reflection system and method for coal seam supercritical carbon dioxide | |
| CN104632174A (en) | Coal seam liquid carbon dioxide fracturing device and method | |
| CN106246101B (en) | A kind of boring method with dry ice drilling fluid auxiliary rock | |
| CN107631899B (en) | A kind of continuous sampling system and sampling method for ocean gas hydrate | |
| CN105756648B (en) | Coal reservoir phase change transformation method | |
| CN107313732A (en) | Rope rotation type heat preservation and pressure maintaining sampling drilling tool | |
| CN107905844A (en) | The old chamber of salt mine adopts space gas injection row's halogen method entirely | |
| CN106568609A (en) | Rope impact type heat-preservation pressure-maintaining sampling drilling tool | |
| CN106988697A (en) | A kind of ocean gas hydrate freezes fidelity core drill | |
| CN107447795B (en) | A kind of pile measurement device and detection method | |
| CN104563974B (en) | Hydrate device is exploited in a kind of supercritical carbon dioxide jet jet drilling | |
| CN105298459A (en) | Method for relieving water blocking damage of ground coal-bed methane extracting and drilling coal seam by microwave heating | |
| CN106761925A (en) | A kind of explosion-proof closed air bag of coal mine roadway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
|
| RJ01 | Rejection of invention patent application after publication |