CN205138931U - Shale gas gassiness volume tester - Google Patents
Shale gas gassiness volume tester Download PDFInfo
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- CN205138931U CN205138931U CN201520848503.4U CN201520848503U CN205138931U CN 205138931 U CN205138931 U CN 205138931U CN 201520848503 U CN201520848503 U CN 201520848503U CN 205138931 U CN205138931 U CN 205138931U
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- solenoid valve
- tank
- pipe line
- metal pipe
- shale gas
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Abstract
The utility model relates to a technical field is measured in the exploration, especially provides a shale gas gassiness volume tester. The utility model discloses the seal pot sets up on weighing transducer, and the resolver is connected with the air inlet of seal pot through first metal pipeline, and it has first solenoid valve to establish ties on the first tubular metal resonator line, and second metal pipeline and salt basin intercommunication are passed through to the outlet of seal pot, and second metal pipeline is connected one end with the seal pot and is stretched into the seal pot bottom, and the second metal pipeline other end stretches into the salt bottom of gullet, exhaust apparatus includes the displacement pump, and the gas vent of seal pot passes through third metal pipeline to be connected with the displacement pump air inlet, and it has the second solenoid valve to establish ties on the third metal pipeline, and fourth metal pipeline is connected to the displacement pump gas outlet, and it has the third solenoid valve to establish ties on the fourth tubular metal resonator line, and first solenoid valve, second solenoid valve, third solenoid valve and weighing transducer are connected with control system with the collection through the wire respectively. The utility model discloses simple structure, with low costs, the measuring accuracy is high, and degree of automation is high.
Description
Technical field
The utility model relates to Reconnaissance Survey technical field, particularly relates to a kind of shale gas air content tester.
Background technology
" research and appraisal of national shale gas resource potential and Favorable Areas preferred " achievement in research that Ministry of Land and Resources 2012 issues shows, China's land-based area shale gas geological resource potentiality are 134.42 trillion expansions, and mining resources potentiality are 25.08 trillion expansions.Shale gas potentiality to be exploited is huge, but the exploitation of China to this field still belongs to the starting stage at present, and the equipment of especially shale content measurement, assessment far can not meet current demand.
Shale air content is the key parameter of the original tolerance of assessment shale, all has great importance to the prediction of shale gassiness evaluation, resource reserve.Desorption method is a kind of very important method in test shale air content, and being widely used in shale gas exploration at home and abroad at present, performance history, is evaluate the most frequently used method of shale gas resource reserve.Shale gas desorption rate is comparatively slow, under conventional laboratory conditions, within one day, usually could collect about 500mL gas, belongs to denier and measures, so high to the requirement of measuring accuracy.
For the measurement of the stripping gas scale of construction, conventional method has gas flow measurement method, burning gases volumetric method and draining meter gas method.With gas meter automatic acquisition desorption data, time lower for desorption rate, the measuring error of gas flow rate is comparatively large, and the volume of fluid is very easily by the impact of environment temperature and pressure, and the precision of measurement is not enough; With the direct measurement gas volume of gas collection measuring cylinder draining, precision of measurement is not enough, human factor impact is comparatively large, operation inconvenience and inefficiency; Existing drainage, mostly can not realize measuring in real time continuously, in operating process, personal error is more obvious, and measuring accuracy is low.And the air content tester that abroad some precision are higher, although automaticity is high, good stability, mostly with high costs.So research and develop a kind of structure simple, cost is low, and measuring accuracy is high, and the shale gas air content tester that automaticity is high seems particularly important.
Utility model content
It is simple that the technical problems to be solved in the utility model is to provide a kind of structure, and cost is low, and measuring accuracy is high, the shale gas air content tester that automaticity is high
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model shale gas air content tester, comprise sample desorption apparatus, real-time measurement apparatus, exhaust apparatus and data acquisition and controlling system, desorption apparatus is connected with real-time measurement apparatus by the first metal pipe line, real-time measurement apparatus comprises casing, sealable tank, weight sensor and saline slot, sealable tank, weight sensor and saline slot are all placed in casing, sealable tank is arranged on weight sensor, desorption apparatus is connected with the air intake opening of sealable tank by the first metal pipe line, first metal pipe line is in series with the first solenoid valve, the freeing port of sealable tank is communicated with saline slot by the second metal pipe line, second metal pipe line is connected one end and stretches into bottom sealable tank with sealable tank, the second metal pipe line other end stretches into bottom saline slot, exhaust apparatus comprises volumetric pump, the exhausr port of sealable tank is connected with volumetric pump air intake opening by the 3rd metal pipe line, 3rd metal pipe line is in series with the second solenoid valve, volumetric pump gas outlet connects the 4th metal pipe line, 4th metal pipe line is in series with the 3rd solenoid valve, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve are connected with data acquisition and controlling system respectively by wire with weight sensor.
The utility model shale gas air content tester, further, described desorption apparatus comprises thermostat water bath and conciliates cucurbitula, separate cucurbitula and be placed in thermostat water bath, the structure of agreeing with mutually with desorb pot bottom shape is provided with in thermostat water bath, be placed in by solution cucurbitula and agree with structure and implement fixing, be provided with temperature transmitter in described thermostat water bath, described temperature transmitter is connected with data acquisition and controlling system by wire.
The utility model shale gas air content tester, further, described solution cucurbitula comprises tank body, cover, rapid-acting coupling and O RunddichtringO, is provided with O RunddichtringO between tank body and cover, be connected by hold-down bolt between tank body with cover, rapid-acting coupling is threaded connection and is fixed on cover.
The utility model shale gas air content tester, further, described solution cucurbitula also comprises over cap, and rapid-acting coupling outside is fixed with over cap by demountable structure.
The utility model shale gas air content tester, further, described saline slot is uncovered, and saline slot adopts organic glass to make.
The utility model shale gas air content tester, further, described real-time measurement apparatus also comprises cover tank, and cover tank is fixed in weight sensing, and sealable tank is placed in cover tank, and cover tank internal diameter is greater than sealable tank external diameter 0.5-1mm.
The utility model shale gas air content tester, further, described cover tank is bolted and is fixed in weight sensing, and cover tank is adopted made of plastic, and sealable tank adopts rigid plastic to make.
The utility model shale gas air content tester, further, also comprises gas skirt in described exhaust apparatus, and gas skirt is arranged on the 4th metal pipe line between volumetric pump and the 3rd solenoid valve, and described gas skirt stretches into below saline slot salt solution liquid level.
The utility model shale gas air content tester, further, described first, second, third and fourth metal pipe line is φ 3 metal pipe line.
The utility model shale gas air content tester, further, described data acquisition and controlling system comprises host computer, I/O control card, A/D data collecting card and RS485-USB converter, first solenoid valve, the second solenoid valve are connected with I/O control card respectively by wire with the 3rd solenoid valve, temperature transmitter is connected with A/D data collecting card respectively by wire with weight sensor, and I/O control card is all connected with host computer by RS485-USB converter with A/D data collecting card.
The utility model shale gas air content tester compared with prior art, has following beneficial effect:
The utility model shale gas air content tester adopts indirectly measurement method, by draining gas collection, utilize the water discharge when equilibrium air pressure in weight sensor measurement sealable tank, again mass change amount is converted into the gas volume amount of separating sucking-off, because the quality of gas is much smaller than the quality of liquid under same volume, so the subtle change of gas volume can be amplified by measurement quality, the precision that improve measurement of this indirect measure high degree, depict the variation rule curve of shale gas in desorption process more accurately, this is the measuring accuracy that method is beyond one's reach of the direct measurement gas volume such as existing gas meter and gas collecting jar with ground-on cover plate.Weight sensor realizes the change of electric potential signal by the deformation of strain mechanism, and data precision is high, and measure linear degree is fabulous; And compare the liquid level sensor used in usual measuring method, liquid level sensor is by ultrasound wave, radar signal or light signal, measured signal is launched and then accepts reflected signal, calculate the transmission time, add the transmission speed of signal own, carry out the distance of the remote measured object of computation and measurement, measurement result has error to a certain degree, especially implement to measure on the interface of injustice, can the margin of error be strengthened.
The utility model shale gas air content tester is different from suspension type common on the market and stresses, A seating fixed form in employing, be bolted a cover tank on weight sensor, then sealable tank being placed in cover tank implements fixing, avoid the error caused because equipment rocks that suspension type check weighing brings, good control is achieved to experimental precision and accuracy, makes data more accurate, the enforcement that instrument can both be stable in various rugged environment is measured.
The utility model shale gas air content tester is provided with gas skirt in exhaust apparatus, the experimental gas measured is collected, because the sample gas measured all belongs to inflammable gas, and discharge capacity is once larger, if have naked light in surrounding environment, easy initiation fire, does not have security guarantee; The concrete component of sample gas and the content of next measurement are all uncertain, need to be analyzed further, use gas skirt measurement gas can be collected and wait until further analytical test, it also avoid this part gas simultaneously and directly cause environmental pollution and greenhouse effect discharged to air, make measuring process energy-conserving and environment-protective more.
The utility model adopts thermostat water bath simulated formation temperature, and heating is fast, controllable precision is high, the life-span is long, thus accurately can ensure stablizing of instrument environment temperature, and then guarantees the integrality of experiment curv under different temperatures.4-6 can be placed separate cucurbitula in thermostat water bath, measure while multiple sample can be realized, greatly save Measuring Time, improve the efficiency of site desorption.
Connecting line of the present utility model all adopts φ 3 metal pipe line, reduces the change of different temperatures, pressure change lower pipeline volume, thus reduces the impact of gas volume change, add the accuracy of cubing.
The utility model adopts host computer binding signal acquisition module and each solenoid valve, realize Automated condtrol and the operation of whole desorption process, liberate manpower, avoid the error that manual operation brings, not only make measuring process simple and easy to operate, and improve measuring accuracy, guarantee that instrument normally runs by the mode of circulation self-inspection, add the stability in equipment running process.In addition, the utility model volume is little, removable, easy to operate, thus meets the demand of site desorption measurement.
Below in conjunction with accompanying drawing, shale gas air content tester of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model shale gas air content tester.
Embodiment
As shown in Figure 1, the utility model shale gas air content tester comprises sample desorption apparatus, real-time measurement apparatus, exhaust apparatus and data acquisition and controlling system, desorption apparatus is connected with real-time measurement apparatus by the first metal pipe line 41, desorption apparatus comprises thermostat water bath 11 and 4-6 solution cucurbitula 12, separate cucurbitula 12 and be placed in thermostat water bath 11, be provided with in thermostat water bath 11 and separate cucurbitula 12 bottom shape and agree with structure mutually, solution cucurbitula 12 can be directly placed in agree with structure to be implemented fixing, temperature transmitter 13 is provided with in thermostat water bath 11, separate cucurbitula 12 and comprise tank body 14, cover 15, rapid-acting coupling 16, O RunddichtringO 17 and over cap 18, O RunddichtringO 17 is provided with between tank body 14 and cover 15, be connected by hold-down bolt between tank body 14 with cover 15, rapid-acting coupling 16 is threaded connection and is fixed on cover 15, rapid-acting coupling 16 outside is fixed with over cap 18 by demountable structure, real-time measurement apparatus comprises casing 21, sealable tank 22, cover tank 25, weight sensor 23 and saline slot 24, sealable tank 22, weight sensor 23 and saline slot 24 are all placed in casing 21, cover tank 25 is bolted and is fixed on weight sensor 23, sealable tank 22 is placed in cover tank 25, cover tank 25 internal diameter is greater than sealable tank 22 external diameter 0.5-1mm, cover tank 25 is adopted made of plastic, sealable tank 22 adopts rigid plastic to make, and rapid-acting coupling 16 is connected with the air intake opening of sealable tank 22 by the first metal pipe line 41, first metal pipe line 41 is in series with the first solenoid valve 51, the freeing port of sealable tank 22 is communicated with saline slot by the second metal pipe line 42, second metal pipe line 42 is connected one end and stretches into bottom sealable tank 22 with sealable tank 22, second metal pipe line 42 other end stretches into bottom saline slot 24, exhaust apparatus comprises volumetric pump 31 and gas skirt 32, the exhausr port of sealable tank 22 is connected with volumetric pump 31 air intake opening by the 3rd metal pipe line 43,3rd metal pipe line 43 is in series with the second solenoid valve 52, volumetric pump 31 gas outlet is stretched into below saline slot 24 liquid level by metal pipe line and is connected with gas skirt 32 air intake opening, connection the 4th metal pipe line the 44, four metal pipe line 44 in gas skirt 32 gas outlet is in series with the 3rd solenoid valve 53, first, second, third and fourth metal pipe line is φ 3 metal pipe line, data acquisition and controlling system comprises host computer, I/O control card, A/D data collecting card and RS485-USB converter, first solenoid valve 51, second solenoid valve 52 is connected with I/O control card respectively by wire with the 3rd solenoid valve 53, temperature transmitter 13 is connected with A/D data collecting card respectively by wire with weight sensor 23, and I/O control card is all connected with host computer by RS485-USB converter with A/D data collecting card.
The utility model shale gas air content tester specific works process is as follows:
(1) clean: use clear water to clean saline slot 24 before experiment, cleaned in backward saline slot and filled saturated brine, described saturated brine is saturated nacl aqueous solution;
(1a) air tight test: opening power, close the first solenoid valve 51 and the 3rd solenoid valve 53, open the second solenoid valve 52, open volumetric pump 31, volumetric pump 31 is bled and is made in sealable tank 22 in negative pressure, salt solution enters sealable tank 22 through the second metal pipe line 42, when arrived weight is prescribed a time limit, close volumetric pump 31, if the data that weight sensor records are floated in ± 1 ‰ scope, and continue more than 6 seconds, illustrate that the impermeability of device is good;
(2) sample is filled: solution cucurbitula 12 and the first metal pipe line 41 are full of salt solution, exclude in tank and gas in metal pipe line, after shale core takes out well head, rapid loading is separated in cucurbitula 12, and use bird's eye gravel sand to fill up solution cucurbitula, seal after excluding the water separated in cucurbitula, then put into the thermostat water bath 11 of simulated formation temperature, rapid-acting coupling is connected with the first metal pipe line 41, allows rock core separate natural desorb in cucurbitula;
(3) be vented water filling: sealable tank 22 Exhaust Gas is filled salt solution, closes the first solenoid valve 51 and the 3rd solenoid valve 53, close desorb tank valve; Open the second solenoid valve 52, open volumetric pump 31, residual gas in sealable tank 22 is discharged through the 3rd metal pipe line 43 by volumetric pump 31, make in negative pressure in sealable tank 22, salt solution enters sealable tank 22 through the second metal pipe line 42, and sealable tank 22 gross mass increases, computer shows the qualitative data and mass-change curve that are obtained by weight sensor in real time, when sealable tank reaches upper weight limit, in sealable tank, be full of salt solution, close volumetric pump 31 and the second solenoid valve 52;
(4) shale gas is collected: close the 3rd solenoid valve 53, open the first solenoid valve 51 and conciliate cucurbitula valve, shale gas desorbs from solution cucurbitula 12, enter in sealable tank 22 through the first metal pipe line 41, now sealable tank 22 internal gas pressure is greater than external atmosphere pressure, salt solution in sealable tank enters in saline slot 24 through the second metal pipe line 42 by the gas in sealable tank 22, water level decreasing in sealable tank, sealable tank gross mass reduces, mass parameter imports host computer into by weight sensor 23, monitors in real time;
The shale gas volume Vg now collected can calculate as follows:
Vg: the shale gas volume collected, mL;
Δ m
b: the variable quantity of sealable tank gross mass, g;
ρ
b: brine density, g/mL;
The generating rate v of gas can be calculated according to desorption time
g:
V
g: the generating rate separating gas in cucurbitula, mL/s;
Vg: the gas volume having separated sucking-off, mL;
T: desorb institute elapsed time, s;
When sealable tank 22 general assembly (TW) drops to quality level, the salt solution in sealable tank is all discharged, and has filled shale gas in sealable tank 22, illustrates that a tank shale gas has been collected;
The then volume V of this tank shale gas
scomputing formula is:
V
s: a tank shale gas volume, mL;
M
u: the sealable tank gross mass quality upper limit, g;
M
d: sealable tank gross mass quality level, g;
ρ
b: brine density, g/mL;
(5) then repetitive process (3) and (4), and record cycle index, the qualitative data collected when weight sensor does not reach quality level, but when being stabilized in an intermediate value, shale core is described, and desorb is complete, host computer records weight data now automatically, and completes calculating, obtains the shale gas cumulative volume V separating sucking-off;
V: the shale gas cumulative volume separating sucking-off, mL;
N: shale gas circulating collection number of times, secondary;
V
s: a tank shale gas volume, mL;
M
r: the sealable tank gross mass after steady quality, g;
ρ
b: brine density, g/mL.
In measuring process, simulating signal is sent to A/D data collecting card by weight sensor 23 by the weight change of sealable tank, is converted into electric signal is sent to host computer by A/D data collecting card, carries out the display of signal, stores and analyze; Simulating signal is also sent to A/D data collecting card by temperature transmitter 13 by the temperature variation in thermostat water bath, is converted into electric signal is sent to host computer by A/D data collecting card, carries out the real-time monitoring of desorption temperature; The digital communication signal that host computer sends by I/O control card is converted into electric signal, and then controls the open and close of the first solenoid valve 51, second solenoid valve 52, the 3rd solenoid valve 53 and volumetric pump 44.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (10)
1. a shale gas air content tester, it is characterized in that: comprise sample desorption apparatus, real-time measurement apparatus, exhaust apparatus and data acquisition and controlling system, desorption apparatus is connected with real-time measurement apparatus by the first metal pipe line, real-time measurement apparatus comprises casing, sealable tank, weight sensor and saline slot, sealable tank, weight sensor and saline slot are all placed in casing, sealable tank is arranged on weight sensor, desorption apparatus is connected with the air intake opening of sealable tank by the first metal pipe line, first metal pipe line is in series with the first solenoid valve, the freeing port of sealable tank is communicated with saline slot by the second metal pipe line, second metal pipe line is connected one end and stretches into bottom sealable tank with sealable tank, the second metal pipe line other end stretches into bottom saline slot, exhaust apparatus comprises volumetric pump, the exhausr port of sealable tank is connected with volumetric pump air intake opening by the 3rd metal pipe line, 3rd metal pipe line is in series with the second solenoid valve, volumetric pump gas outlet connects the 4th metal pipe line, 4th metal pipe line is in series with the 3rd solenoid valve, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve are connected with data acquisition and controlling system respectively by wire with weight sensor.
2. shale gas air content tester according to claim 1, it is characterized in that: described desorption apparatus comprises thermostat water bath and conciliates cucurbitula, separate cucurbitula and be placed in thermostat water bath, the structure of agreeing with mutually with desorb pot bottom shape is provided with in thermostat water bath, solution cucurbitula is placed in and agrees with structure and implement fixing, be provided with temperature transmitter in described thermostat water bath, described temperature transmitter is connected with data acquisition and controlling system by wire.
3. shale gas air content tester according to claim 2, it is characterized in that: described solution cucurbitula comprises tank body, cover, rapid-acting coupling and O RunddichtringO, O RunddichtringO is provided with between tank body and cover, be connected by hold-down bolt between tank body with cover, rapid-acting coupling is threaded connection and is fixed on cover.
4. shale gas air content tester according to claim 3, is characterized in that: described solution cucurbitula also comprises over cap, and rapid-acting coupling outside is fixed with over cap by demountable structure.
5. shale gas air content tester according to claim 1, is characterized in that: described saline slot is uncovered, and saline slot adopts organic glass to make.
6. shale gas air content tester according to claim 1, is characterized in that: described real-time measurement apparatus also comprises cover tank, and cover tank is fixed in weight sensing, and sealable tank is placed in cover tank, and cover tank internal diameter is greater than sealable tank external diameter 0.5-1mm.
7. shale gas air content tester according to claim 6, is characterized in that: described cover tank is bolted and is fixed in weight sensing, and cover tank is adopted made of plastic, and sealable tank adopts rigid plastic to make.
8. shale gas air content tester according to claim 1, it is characterized in that: in described exhaust apparatus, also comprise gas skirt, gas skirt is arranged on the 4th metal pipe line between volumetric pump and the 3rd solenoid valve, and described gas skirt stretches into below saline slot salt solution liquid level.
9. shale gas air content tester according to claim 1, is characterized in that: described first, second, third and fourth metal pipe line is φ 3 metal pipe line.
10. the shale gas air content tester according to claim 1-9 any one, it is characterized in that: described data acquisition and controlling system comprises host computer, I/O control card, A/D data collecting card and RS485-USB converter, first solenoid valve, the second solenoid valve are connected with I/O control card respectively by wire with the 3rd solenoid valve, temperature transmitter is connected with A/D data collecting card respectively by wire with weight sensor, and I/O control card is all connected with host computer by RS485-USB converter with A/D data collecting card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848503.4U CN205138931U (en) | 2015-10-29 | 2015-10-29 | Shale gas gassiness volume tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848503.4U CN205138931U (en) | 2015-10-29 | 2015-10-29 | Shale gas gassiness volume tester |
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| Publication Number | Publication Date |
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| CN205138931U true CN205138931U (en) | 2016-04-06 |
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| CN201520848503.4U Withdrawn - After Issue CN205138931U (en) | 2015-10-29 | 2015-10-29 | Shale gas gassiness volume tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223099A (en) * | 2015-10-29 | 2016-01-06 | 北京瑞莱博石油技术有限公司 | Shale gas air content tester and method of testing thereof |
| CN105973337A (en) * | 2016-06-06 | 2016-09-28 | 中国石油天然气股份有限公司 | Experimental device and method for gaseous product metering and drying sampling |
| CN108627412A (en) * | 2018-04-27 | 2018-10-09 | 成都理工大学 | The micro self-measuring device of fluid substitution weight method grease and method |
-
2015
- 2015-10-29 CN CN201520848503.4U patent/CN205138931U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223099A (en) * | 2015-10-29 | 2016-01-06 | 北京瑞莱博石油技术有限公司 | Shale gas air content tester and method of testing thereof |
| CN105223099B (en) * | 2015-10-29 | 2018-07-10 | 北京瑞莱博石油技术有限公司 | Shale gas gassiness tester and its test method |
| CN105973337A (en) * | 2016-06-06 | 2016-09-28 | 中国石油天然气股份有限公司 | Experimental device and method for gaseous product metering and drying sampling |
| CN105973337B (en) * | 2016-06-06 | 2018-11-16 | 中国石油天然气股份有限公司 | A kind of experimental provision and experimental method of gaseous product metering and dry sampling |
| CN108627412A (en) * | 2018-04-27 | 2018-10-09 | 成都理工大学 | The micro self-measuring device of fluid substitution weight method grease and method |
| CN108627412B (en) * | 2018-04-27 | 2020-09-11 | 成都理工大学 | Fluid displacement weighing method oil-water micro-quantity automatic metering device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180614 Address after: 100089 308, 3 floor, 1 building, 27 Zhixin Road, Haidian District, Beijing. Patentee after: Beijing forever Technology Co., Ltd. Address before: 102200 No. 155, Changhuai Road, Changping District science and Technology Park, Beijing Patentee before: BEIJING RUILAIBO PETROLEUM TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160406 Effective date of abandoning: 20180710 |
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| AV01 | Patent right actively abandoned |