CN104897431B - A kind of harvester and acquisition method of free hydrocarbon and pedotheque - Google Patents
A kind of harvester and acquisition method of free hydrocarbon and pedotheque Download PDFInfo
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- CN104897431B CN104897431B CN201510239033.6A CN201510239033A CN104897431B CN 104897431 B CN104897431 B CN 104897431B CN 201510239033 A CN201510239033 A CN 201510239033A CN 104897431 B CN104897431 B CN 104897431B
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Abstract
The invention provides a kind of free hydrocarbon and the harvester and acquisition method of pedotheque.The harvester of the free hydrocarbon and pedotheque includes hollow a drilling rod and flight, and the flight is helically wound on the body of rod outer wall for being arranged on the drilling rod, and extends to the bottom of the drilling rod；The bottom of the drilling rod is connected with a double-vane drill bit；The upper and lower part of the body of rod outer wall of the drilling rod offers a bleeding point and an air inlet respectively, is provided with a capillary in the hollow cavity of the drilling rod, is connected between the air inlet and the bleeding point by the capillary.The present invention drives whole auger stem drilling using unit head, the power of drilling is big, speed is fast, the free hydrocarbon gas in 3 meters or the soil of deeper can be obtained, double-vane drill bit cooperates with flight, the pedotheque of same depth can be obtained in drilling process, metal capillary state is more stable, is advantageous to obtain the high free hydrocarbon gaseous sample of quality.
Description
Technical field
The present invention relates to a kind of free hydrocarbon and the harvester and acquisition method of pedotheque, belong to oil and gas geochemistry and survey
Visit technical field.
Background technology
In Oil ＆ Gas Resources Exploration means, geochemical is a kind of important method, the collection to native Soil free hydrocarbon
It is the important step of geochemical, the analysis to free hydrocarbon is can to reflect the important indicator of oil and gas anomaly.In oil-gas reservoir
Top, micro- due to hydrocarbon gas ooze ease, and by being sampled in earth's surface, and scene carries out free hydrocarbon index chemical analysis, so as to fast
Speed finds oil and gas anomaly.Meanwhile pedotheque is gathered, auxiliary characteristics can be used as by carrying out analysis.
At present, the conventional harvester of free hydrocarbon gas sample has following several：
The first is to use drill rod device, and weight is tapped to after about 1-1.5 rice depth, with extraordinary collector and vacuum
Pumping connects, and extracts free hydrocarbon gaseous sample, by analyzing free hydrocarbon gaseous sample, obtains the information of subterranean oil gas reservoir indirectly.
For this harvester because being short of power or drill rod and taking the poor sealing of gas, the air of earth's surface is easily accessible collector
In, so as to cause the interference of earth's surface air to the free gas of collection；Shallow additionally, due to sampling depth, collection sample is vulnerable to earth's surface
Pollution interference, so that in the free hydrocarbon samples of analysis, the information that must often make mistake, so as to have influence on oil and gas geochemical exploration
Effect on Detecting.
It is for second the taper bit spiral drill of manual operation, its advantage is that design is succinct, easy to carry, the depth of collection
For degree at 3 meters or so, shortcoming is that power is small, and acquisition time length, drilling tool returns native ability, it is impossible to while soil sampling.
The third is the spiral drill for the taper bit that machine power drives, and takes inside it gas capillary to be moulded frequently with special type
Expect material, take gas method to gather gas sample using draining.Its advantage is that power is big, and the sample of energy 3 meters of depth of Quick Acquisition, sample is by ground
The pollution of table is small, the good airproof performance of spiral drill, can preferably collect the free hydrocarbon in soil, and shortcoming is due to use
Taper bit bottom extrudes to both sides, it is impossible to returns soil in time, it is impossible to obtains the soil sample with depth；Plastic capillary is to organic principle
Free hydrocarbon get into adstante febre in drilling tool and have certain pollution；In winter constructs, when taking the gas method to take gas using draining, capillary
Easily freezed by water droplet, blocking.
In addition, in the prior art, using the stratum of existing instrument collection free hydrocarbon gas and pedotheque all than shallower, and
Superficial stratum is easily contaminated, and the data obtained in this case can have a negative impact to oil and gas index data.
The content of the invention
In view of the defects of above-mentioned prior art is present, the purpose of the present invention is to propose to adopting for a kind of free hydrocarbon and pedotheque
Acquisition means and acquisition method, the free hydrocarbon gas closed in 3 meters or the soil of deeper can be collected to fast and high quality, together
When can carry out the collection of pedotheque.
The purpose of the present invention is achieved by the following technical programs：
A kind of harvester of free hydrocarbon and pedotheque, the device includes hollow a drilling rod and flight, described
Flight is helically wound on the body of rod outer wall for being arranged on the drilling rod, and extends to the bottom of the drilling rod；
The bottom of the drilling rod is mutually fixedly connected with a double-vane drill bit；
The upper and lower part of the body of rod outer wall of the drilling rod offers a bleeding point and an air inlet respectively, the drilling rod
A dismountable capillary is provided with hollow cavity, is connected between the air inlet and the bleeding point by the capillary
It is logical.
It in above-mentioned free hydrocarbon and the harvester of pedotheque, can effectively carry out returning soil using double-vane drill bit, solve
The problem of traditional three-wing bit or taper bit can not carry out returning soil.The present invention is simultaneously using this part of flight, energy
It is enough that the soil that double-vane drill bit is drilled through and returned out is back to earth's surface by flight, it is easy to the extraction of pedotheque；Meanwhile spiral
Piece can also play a part of completely cutting off aeroseal drilling.According to specific embodiment, flight is along drilling rod along being rotationally advancing
Direction extends downwardly.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the double-vane drill bit includes left and right double-vane, double
The wing is the plane for being provided with arc-shaped recess in the aerofoil for being rotationally advancing direction, or double-vane is song in the aerofoil for being rotationally advancing direction
Face.
In above-mentioned free hydrocarbon and the harvester of pedotheque, the aerofoil in direction is being rotationally advancing, that is, shovel soil
Face, the face directly acted on soil, arc-shaped recess or curved surface are formed, one power to raise up can be produced, promote the soil shoveled out upwards
Transmission.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the parallel angle of the double-vane is 15-30
Degree, vertical direction angle are 50-70 degree, the width 3-5 millimeters wider than drilling rod of double-vane.It is furthermore preferred that the parallel folder of the double-vane
Angle is 15 degree, and vertical direction angle is 70 degree, and the width of double-vane is wider than drilling rod 5 millimeters.
The width of above-mentioned double-vane drill bit is slightly wider than drilling rod, wide then easy gas leakage, narrow, can not be native to upload by what is shoveled out
Pass away.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the bottom of the drilling rod is connected by drill bit
Bolt or screw thread are mutually fixedly connected with the double-vane drill bit.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the double-vane drill bit also include connecting pin bores,
Cylinder connector, six prism connectors and at least one gasket slot；
The bottom of the six prisms connector is surrounded by annular flange, the external diameter of the annular flange and the drilling rod
External diameter is consistent；
The connecting pin bores is arranged on the six prisms connector；
The gasket slot is circumferentially positioned at the periphery of the cylinder connector；
The cylinder connector with the six prisms connector is concentric is fixedly connected, the cylinder connector and described double
The wing is separately positioned on the top and bottom of the six prisms connector；
The chamber matched with the cylinder connector and the six prisms connector, institute are provided with the body of rod of the drilling rod bottom
Cylinder connector and the six prisms connector is stated to abut against with the drilling rod into rear in the body of rod of drilling rod bottom；
The inwall of the cylinder connector and the drilling rod passes through the gasket-like Cheng Mi that is arranged in the gasket slot
Envelope；
The drilling rod is provided with the hole to match with the connecting pin bores close to the lower end of bottom, the drilling rod and described double
Wing drill bit is achieved a fixed connection by connecting pin through the hole in the connecting pin bores and drilling rod.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the drilling rod is fried dough twist auger stem.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the top of the drilling rod is connected with unit head.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is furthermore preferred that the top of the drilling rod is provided with unit head
Thread, the drilling rod are connected by the unit head thread with the unit head.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that filter screen is provided with the air inlet.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that shield bowl is additionally provided with the air inlet；Institute
It is streamlined to state shield bowl, is arranged on the drilling-rod external wall, at air inlet between the upper lower edge of flight, is higher by air inlet 0.3-
1 centimetre, preferably it is higher by 1 centimetre of air inlet.
Above-mentioned shield bowl is provided in the front of the traffic direction of air inlet, only in this way can just play a protective role；
Using shield bowl the ground pressure that air inlet is subject to during drilling can be made minimum, be also prevented from the high extrusion of soil block up into
Gas port.Traditional air inlet does not protect a bowl protection device, and when taking gas after getting into 3 meters, generation negative pressure, which is taken out, to hold one's breath, bottom air inlet
It is blocked；Present invention employs air inlet to protect bowl protection technique so that during pumping, can smoothly extract the SOIL GAS of the 3 meters of depth in bottom out
Body.
In the harvester of above-mentioned free hydrocarbon and pedotheque, capillary can be plastic capillary, tetrafluoroethene capillary
Pipe, metal capillary etc., but the capillary of plastic material is used in the past, generated heat in the case where high speed is crept into, cause plastics
The capillary of material causes the free hydrocarbon composition closely related with oil gas to be contaminated, institute because heat volatilizes organic principle gas
That should not select, while use cost is also considered, it is preferred, therefore, that the capillary is metal capillary.
In the present invention, metal capillary is the design of a root long pipe, up to more than 4 meters, and is removably to design.And show
Have in technology, the depth that reach enough just needs to connect more capillaries, and can be produced Lou with modes such as capillary connections more
Gas, and changed extremely inconvenient in the mode of more connections as damaged；The technical scheme of the application has root long pipe composition,
Metal material quality is hard, is not easy gas leakage, and integrally can quickly and easily be changed under dismountable mode.
In above-mentioned free hydrocarbon and the harvester of pedotheque, it is preferred that the external diameter of the metal capillary is 2mm,
Internal volume 1.5-2 milliliters.
Existing conventional discharge takes gas method to take gas, it is necessary to first toward injection water in capillary, discharges original gas in capillary
Body, the method for then extracting underground original gas again, at least need 5 minutes；
The present invention uses superfine metal capillary technique, discharges original gas in 2 milliliters of pipe, then take free hydrocarbon gas one
As need time less than 1 minute.
The present invention also provides a kind of acquisition method of free hydrocarbon and pedotheque, and it uses above-mentioned free hydrocarbon and soil-like
The harvester of product, comprises the following steps：
Step 1: the top of drilling rod is connected with unit head；
Step 2: the head that turns on the power, drives rod boring to stop to collection point；
Step 3: be evacuated to the bleeding point on drilling rod top, gas pass sequentially through adopt air inlet, filter screen, capillary and
Bleeding point, the filling preservation of gas sample of extraction, the free hydrocarbon as the collection point gathers sample, while gathers what flight returned up
Pedotheque, it is sealed.
In above-mentioned acquisition method, the bleeding point on drilling rod top can be evacuated using syringe, then can incited somebody to action
The air seal of extraction is stored in syringe.
In above-mentioned free hydrocarbon and the acquisition method of pedotheque, it is preferred that the acquisition method is additionally included in carry out step
The step of before one to the capillary progress seal tightness test of the inside cavity of drilling rod.
In above-mentioned acquisition method.It is able to ensure that capillary is air tight using seal tightness test.
The present invention protrusion effect be：
The present invention is by double-vane drill bit and returns soil flight, and the capillary of gas production carries out unitary design, can
Soil sample and gas sample are directly gathered simultaneously, it is simple and practical, it is easy to operate, improve efficiency；Employ unit head and drive whole spiral shell
Rod boring is revolved, the power of drilling is big, speed is fast, can obtain the free hydrocarbon gas in 3 meters or the soil of deeper, and double-vane bores
Head is cooperated with flight, and the pedotheque of same depth can be obtained in drilling process, and metal capillary moves in high speed drill
In the case of state it is more stable, be advantageous to obtain the high free hydrocarbon gaseous sample of quality, and the speed of evacuation is fast.
Brief description of the drawings
Fig. 1 is the structural representation of the harvester of embodiment free hydrocarbon and pedotheque；
Fig. 2 is the structural representation of embodiment double-vane drill bit.
Drawing reference numeral explanation：
1 unit head thread, 2 fried dough twist auger stems, 3 flights, 4 connecting pins, 5 double-vane drill bits, 6 air inlets, 7 filters
Net, 8 bleeding points, 9 metal capillaries, 10 shield bowls, 11 gasket slots, 12 cylinder connectors, 13 connecting pin bores, 14 right flanks, 15 left sides
The wing, 16 6 prism connectors.
Embodiment
In order to which technical characteristic, purpose and the beneficial effect of the present invention is more clearly understood, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
Embodiment
The present embodiment provides a kind of free hydrocarbon of oil and gas geochemical exploration and the harvester of pedotheque, such as Fig. 1 institutes
Show, the device includes hollow fried dough twist auger stem 2, and the top of fried dough twist auger stem 2 is provided with unit head thread 1, fried dough twist
Auger stem 2 is connected by unit head thread 1 with unit head.Flight 3, which is helically wound, is arranged on auger stem 2
Body of rod outer wall, and extend upwardly to the bottom of fried dough twist auger stem 2 in the side being threadingly advanced；
The bottom of fried dough twist auger stem 2 is fixedly connected with a double-vane drill bit 5；
Above-mentioned double-vane drill bit 5, as shown in Fig. 2 being rotationally advancing direction including left and right double-vane, left wing 15, right flank 14, double-vane
Aerofoil be the plane for being provided with arc-shaped recess, the parallel angle of double-vane is 15 degree, and vertical direction angle is 70 degree, the width of double-vane
Degree is wider than drilling rod 5 millimeters；
Above-mentioned double-vane drill bit 5, as shown in Fig. 2 also including connecting pin bores 13, cylinder connector 12, six prism connectors
16 and the gasket slot 11 of two；
The bottom of six prism connectors 16 is surrounded by annular flange, the external diameter of the annular flange and the fried dough twist spiral
The external diameter of drilling rod 2 is consistent；
Connecting pin bores 13 is arranged on six prism connectors 16；
Gasket slot 11 is circumferentially positioned at the periphery of cylinder connector 12；
The cylinder connector 12 with the six prisms connector 16 is concentric is fixedly connected, the He of cylinder connector 12
The double-vane is separately positioned on the top and bottom of the six prisms connector 16；
It is provided with and the cylinder connector 12 and the six prisms connector in the bottom body of rod of fried dough twist auger stem 2
The chamber of 16 matchings, the cylinder connector 12 and the six prisms connector 16 enter the rear and fried dough twist in the body of rod of drilling rod bottom
Auger stem 2 abuts against；
The inwall of the cylinder connector 12 and the fried dough twist auger stem 2 is by being arranged in the gasket slot 11
Gasket-like is into sealing；
The fried dough twist auger stem 2 is provided with the hole to match with the connecting pin bores 13 close to the lower end of bottom, described
Fried dough twist auger stem 2 and the double-vane drill bit 5 are passed through in the connecting pin bores 13 and fried dough twist auger stem 2 by connecting pin 4
Hole achieves a fixed connection.
The upper and lower part of the body of rod outer wall of fried dough twist auger stem 2 offers bleeding point 8 and air inlet 6, air inlet 6 respectively
Place is provided with filter screen 7.
Shield bowl 10 is additionally provided with the air inlet 6 of fried dough twist auger stem 2；It is streamlined to protect bowl 10, is arranged on fried dough twist spiral
Between the upper lower edge of flight on drilling-rod external wall, at air inlet 6,1 centimetre of air inlet is higher by.
Demountable metallic capillary 9 is provided with the hollow cavity of fried dough twist auger stem 2, the external diameter of metal capillary 9 is
2mm, internal volume 1.5-2 milliliters, is connected between air inlet 6 and bleeding point 8 by metal capillary 9.
The present embodiment also provides a kind of acquisition method of free hydrocarbon and pedotheque, and it uses above-mentioned free hydrocarbon and soil
The harvester of sample, comprises the following steps：
Step 1: the seal tightness test of the metal capillary 9 of the inside cavity of fried dough twist auger stem 2 is first carried out, to ensure
Metal capillary 9 is air tight, assembles at the top of fried dough twist auger stem 2 with unit head after pass the test；
Step 2: the head that turns on the power, drives fried dough twist auger stem 2 to creep into clockwise, collection point stopping is got into；Adopted in sample
Collect in drilling process, double-vane drill bit 5 carries out returning soil by flight 3, while reaches the sealing purpose of isolation air；
Step 3: be evacuated with bleeding point 8 of the syringe on the top of fried dough twist auger stem 2, gas pass sequentially through adopt into
Gas port 6, filter screen 7, metal capillary 9 and bleeding point 8 enter syringe, the gas sample sealing gasket good seal (wherein first of extraction
Guan Yin, which contains air, to be excluded, and collect the second pipe), the free hydrocarbon as the collection point gathers sample, while gathers flight 3 and return
The pedotheque to come up, installed with aluminium foil bag sealing.
The harvester of the present embodiment is gathered above oil-gas reservoir 10 minutes or so the collection points that can get into 3 meters of depths
The free hydrocarbon CH arrived4(methane) content may be up to 1000ppm-10000ppm, and the free hydrocarbon CH of traditional harvester collection4(first
Alkane) content in below 300ppm, in the surface oil and gas chemistry exploration in the neat oil field of Xinjiang jorum, gathers free using the present embodiment
Gas sample product, 10 mouthfuls of oil wells of analysis result success prediction.
Contrast test：
1st, drill bit chooses experiment：According to the free hydrocarbon of above-mentioned oil and gas geochemical exploration and the harvester of pedotheque
To be tested, difference is to change the double-vane drill bit of the present embodiment into common double-vane drill bit and three-wing bit, experimental result are shown,
The stratum of same 3 meters of depths is being got into, three-wing bit returns soil amount typically at 100 grams or so, and double-vane drill bit returns soil amount general 300
Gram or so, and the soil that returns for returning native double-vane drill bit of the embodiment of the present invention is measured at 2000 grams or so, it is seen that double-vane of the invention bores
Head, which has, significantly returns native effect.
2nd, bowl Protection is protected：According to the free hydrocarbon of above-mentioned oil and gas geochemical exploration and the harvester of pedotheque
Tested, difference is whether install shield bowl.Experimental result shows that air inlet does not protect a bowl protection device, is taken after getting into 3 meters
During gas, generation negative pressure, which is taken out, to hold one's breath, and bottom air inlet is blocked；The embodiment of the present invention employs air inlet shield bowl protection technique, makes
When must be evacuated, the soil gas of the 3 meters of depth in bottom can be smoothly extracted out.
3rd, capillary gas production is tested：Comparative example takes gas method to take gas using existing traditional draining, first toward injection in capillary
Water, discharges original gas in capillary, the method for then extracting underground original gas again, and whole process at least needs 5 minutes；
The embodiment of the present invention uses superfine metal capillary technique, discharges original gas in 2 milliliters of pipe, then take free hydrocarbon gas general
Need the time less than 1 minute.
4th, native gas production experiment is adopted：Comparative example uses the conventional method for individually gathering soil sample and gas sample in the prior art,
At least with the time of 15 minutes；Present invention method employ superfine metal capillary take gas, return native double-vane drill bit and
Air inlet protection technique and big power drilling, disposable realize adopt native gas production operation, it is possible to achieve complete soil sample simultaneously in 5 minutes
With the collection of gas sample.
Therefore the embodiment of the present invention by double-vane drill bit and returns soil flight, and the capillary of gas production is carried out
Unitary design, soil sample and gas sample can be directly gathered simultaneously, it is simple and practical, it is easy to operate, improve efficiency；What is used is dynamic
Power head drives whole auger stem drilling, and the power of drilling is big, speed is fast, can obtain the trip in 3 meters or the soil of deeper
From appropriate hydrocarbon gas, double-vane drill bit is cooperated with flight, and the pedotheque of same depth, metal kernel can be obtained in drilling process
Tubule is in stable condition in the case where high speed drill is dynamic, is advantageous to obtain the high free hydrocarbon gaseous sample of quality, and the speed of evacuation is fast.
Claims (11)
- A kind of 1. harvester of free hydrocarbon and pedotheque, it is characterised in that：The device includes hollow a drilling rod and spiral shell Blade, the flight are helically wound on the body of rod outer wall for being arranged on the drilling rod, and extend to the bottom of the drilling rod Portion；The bottom of the drilling rod is mutually fixedly connected with a double-vane drill bit；The upper and lower part of the body of rod outer wall of the drilling rod offers a bleeding point and an air inlet respectively, the drilling rod it is hollow A dismountable capillary is provided with cavity, is connected between the air inlet and the bleeding point by the capillary；The double-vane drill bit includes left and right double-vane, and double-vane is the plane for being provided with arc-shaped recess in the aerofoil for being rotationally advancing direction, Or double-vane is curved surface being rotationally advancing the aerofoil in direction；The parallel angle of the double-vane is 15-30 degree, and vertical direction angle is 50-70 degree, and the width 3-5 wider than drilling rod of double-vane is in the least Rice；Filter screen is provided with the air inlet.
- 2. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：The bottom of the drilling rod leads to Drill bit connecting bolt is crossed mutually to be fixedly connected with the double-vane drill bit.
- 3. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：The double-vane drill bit also wraps Include connecting pin bores, cylinder connector, six prism connectors and at least one gasket slot；The bottom of the six prisms connector is surrounded by annular flange, the external diameter of the external diameter of the annular flange and the drilling rod Unanimously；The connecting pin bores is arranged on the six prisms connector；The gasket slot is circumferentially positioned at the periphery of the cylinder connector；The cylinder connector with the six prisms connector is concentric is fixedly connected, the cylinder connector and the double-vane point The top and bottom of the six prisms connector are not arranged on；The chamber matched with the cylinder connector and the six prisms connector, the circle are provided with the body of rod of the drilling rod bottom Post connector and the six prisms connector abut against after entering in the body of rod of drilling rod bottom with the drilling rod；The inwall of the cylinder connector and the drilling rod is by being arranged on the gasket-like in the gasket slot into sealing；The drilling rod is provided with the hole to match with the connecting pin bores close to the lower end of bottom, and the drilling rod and the double-vane bore Head is achieved a fixed connection by connecting pin through the hole in the connecting pin bores and drilling rod.
- 4. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：The drilling rod is fried dough twist spiral shell Rotary drill bar.
- 5. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：The top of the drilling rod with Unit head connects.
- 6. the harvester of free hydrocarbon and pedotheque according to claim 5, it is characterised in that：Set at the top of the drilling rod Dynamic head thread, the drilling rod are connected by the unit head thread with the unit head.
- 7. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：Also set at the air inlet It is equipped with shield bowl；The shield bowl is streamlined, is arranged on the drilling-rod external wall, at air inlet between the upper lower edge of flight, high Go out 0.3-1 centimetres of air inlet.
- 8. the harvester of free hydrocarbon and pedotheque according to claim 1, it is characterised in that：The capillary is metal Capillary.
- 9. the harvester of free hydrocarbon and pedotheque according to claim 8, it is characterised in that：The metal capillary External diameter is 2mm, internal volume 1.5-2 milliliters.
- 10. the acquisition method of a kind of free hydrocarbon and pedotheque, its usage right requires the free hydrocarbon and soil described in any one of 1-9 The harvester of earth sample, comprises the following steps：Step 1: the top of drilling rod is connected with unit head；Step 2: the head that turns on the power, drives rod boring to stop to collection point；Step 3: being evacuated to the bleeding point on drilling rod top, gas, which passes sequentially through, adopts air inlet, filter screen, capillary and pumping Mouthful, the filling preservation of gas sample of extraction, the free hydrocarbon as the collection point gathers sample, while gathers the soil that flight returns up Sample, it is sealed.
- 11. the acquisition method of free hydrocarbon according to claim 10 and pedotheque, it is characterised in that：The acquisition method is also The step of being included in the capillary progress seal tightness test of the inside cavity before carrying out step 1 to drilling rod.
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| CN106066261B (en) * | 2016-07-13 | 2020-08-11 | 煤科集团沈阳研究院有限公司 | Sampling device and sampling method for accurately determining coal seam gas content |
| CN112525591A (en) * | 2020-11-23 | 2021-03-19 | 佛山市高明区科企生产力促进中心 | Gas sampling device and rock stratum sample and gas sample corresponding method |
| CN115494111B (en) * | 2022-11-07 | 2023-10-03 | 山东省地质矿产勘查开发局第六地质大队(山东省第六地质矿产勘查院) | Soil thermal conductivity testing device and method |
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| CN1611743A (en) * | 2003-10-29 | 2005-05-04 | 中国石油化工股份有限公司 | Underground gas collecting drilling tool |
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| CN103146450A (en) * | 2013-03-29 | 2013-06-12 | 四川金科深冷设备工程有限公司 | Natural gas recovery process |
| CN204705511U (en) * | 2015-05-12 | 2015-10-14 | 中国石油天然气集团公司 | The harvester of a kind of free hydrocarbon and pedotheque |
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| CN104897431A (en) | 2015-09-09 |
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