CN105606487A - Measuring system - Google Patents
Measuring system Download PDFInfo
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- CN105606487A CN105606487A CN201610108129.3A CN201610108129A CN105606487A CN 105606487 A CN105606487 A CN 105606487A CN 201610108129 A CN201610108129 A CN 201610108129A CN 105606487 A CN105606487 A CN 105606487A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
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Abstract
The invention provides a measuring system. The system comprises a gas extracting device, a stirring device, a gas supply device, a heating device, a gas collecting device and a gas measuring device, wherein the gas extracting device is connected with the gas supply device through a first pipeline and the second pipeline and used for conducting degassing on a shale sample, the stirring device is connected with the second pipeline through a third pipeline and used for stirring the shale sample and fracturing fluid, the gas supply device is used for supplying gas with fixed pressure to the stirring device, the heating device is connected with the first pipeline through a spiral gas tube and used for ensuring constant temperature of the gas, the gas collecting device is connected with the spiral gas tube through a fourth pipeline and used for collecting the gas, and the gas measuring device is connected with the fourth pipeline through a measuring pipeline and used for conducting measurement on gas volume through a drainage method. In this way, under the action of the fracturing fluid, measurement can be conducted on shale sample gas adsorption capacity, indoor effective theoretical data of gas desorption under the action of the fracturing fluid is obtained, borehole operation environment and gas production condition are simulated, the shale gas storage layer is prevented from being destroyed, and the gas production rate is increased.
Description
Technical field
The invention belongs to the technical field of geological prospecting, relate in particular to a kind of mensuration system.
Background technology
The proportion of shale gas in China's energy resource structure is increasing, and the contribution that its people are built becomes increasingly conspicuous.Along with the increasing of exploitation dynamics, the composition of zones of different shale has been obtained to new understanding, especially it containsThe ability of combustible gas. Zones of different, the shale sample of different depth is not identical to the adsorption capacity of fuel gas,Pressure break environment also differs widely to the function influence of shale sample, and the ability that therefore shale sample is contained to shale gas is enteredRow is measured, and can avoid specific aim deficiency to cause the heavy damage of shale gas reservoir, causes not good the asking of gas productionTopic.
In prior art, the shale sample of taking by geological prospecting, has destroyed original gas and has been rich in ringBorder, can not directly measure the ability that rock sample contains shale gas, and prior art can not be to of the fracturing fluid effectEvaluate. And only test for different fracturing fluids, can evaluate out fracturing fluid formula to stratumInjury level and the mechanism of action.
Based on this, need badly at present and a kind ofly can evaluate the survey to shale sample gas absorption ability under fracturing fluid effectFixed system, can obtain the indoor effective theory data of gas desorption under fracturing fluid effect, effectively under simulation wellOperating environment and aerogenesis condition, avoid shale gas-bearing reservoir destroyed, improves gas production.
Summary of the invention
The problem existing for prior art, the embodiment of the present invention provides a kind of mensuration system, for solvingIn prior art, can not measure the shale sample gas absorption ability under fracturing fluid effect, causing can not mouldIntend working environment at coal mines and aerogenesis condition, cause shale gas-bearing reservoir destroyed, the technical problem that gas production reduces.
The invention provides a kind of mensuration system, described system comprises: air extractor, agitating device, air feed dressPut, heater, gas collecting device and gas measurement device; Wherein,
Described air extractor is connected with described feeder by the first pipeline and second pipe, for to shaleSample carries out degassed;
Described agitating device is connected with described second pipe by the 3rd pipeline, for stirring described shale sampleWith fracturing fluid;
Described feeder is used to described agitating device that the gas of fixation pressure is provided;
Described heater is connected with the first pipeline by described spiral tracheae, for ensureing described gas constant temperature;
Described gas collecting device is connected with described spiral tracheae by described the 4th pipeline, described in gatheringGas;
Described gas measurement device is connected with described the 4th pipeline by measuring channel, for utilizing drainage pairDescribed gas volume is measured.
In such scheme, described air extractor comprises: vavuum pump.
In such scheme, described feeder comprises: gas tank, Pressure gauge; Wherein, described Pressure gauge is installedIn described gas tank one end, for testing the pressure of described gas tank.
In such scheme, described agitating device comprises: storage tank, the first support, claw, base, shaft couplingAnd motor; Wherein,
Described storage tank is arranged on described the first support, for placing described shale sample;
One side of described claw is connected with the first fixing hole of described the first support one side, another of described clawSide is connected with the second fixing hole of described the first support opposite side;
One end of described the first support is arranged on described base, the other end of described the first support and describedOne end of axial organ connects;
The other end of described shaft coupling is connected with described motor.
In such scheme, described heater comprises: constant temperature oil bath tank.
In such scheme, described gas collecting device comprises: drier, gas collection bag; Wherein,
Described drier is for being dried described gas;
Described gas collection bag is used for gathering described gas.
In such scheme, described system also comprises: concentration detection apparatus, and for the dioxy to described gasThe concentration of changing carbon, fuel gas and methane detects.
In such scheme, described concentration detection apparatus comprises: carbon dioxide probe, combustible gas probe and firstAlkane probe.
In such scheme, described gas measurement device comprises: water injection tank, measuring channel and waste liquid tank; Wherein,
One end of described water injection tank is connected with one end of described measuring channel;
The other end of described measuring channel is connected with described waste liquid tank.
In such scheme, described fracturing fluid comprises: water, thickening agent, gel breaker, drag reducer, inhibitor andBactericide.
The invention provides a kind of mensuration system, described system comprises: air extractor, feeder, stirringDevice, heater, gas collecting device and gas measurement device; Wherein said air extractor is by firstPipeline and second pipe are connected with described feeder, for carrying out degassed to shale sample; Described stirring dressPut by the 3rd pipeline and be connected with described second pipe, for stirring described shale sample and fracturing fluid; DescribedFeeder is used to described agitating device that the gas of fixation pressure is provided; Described heater is by described spiral shellRevolve tracheae and be connected with the first pipeline, for ensureing described gas constant temperature; Described in described gas collecting device passes throughThe 4th pipeline is connected with described spiral tracheae, for gathering described gas; Described gas measurement device is by surveyingBuret road is connected with described the 4th pipeline, for utilizing drainage to measure described gas volume; So,Can under fracturing fluid effect, measure shale sample gas absorption ability, obtain gas under fracturing fluid effectThe indoor effective theory data of desorb, to simulate working environment at coal mines and aerogenesis condition, avoid shale gas-bearing reservoirDestroyed, improve gas production.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of mensuration system provided by the invention.
Detailed description of the invention
In order to obtain the indoor effective theory data of gas desorption under fracturing fluid effect, with simulate working environment at coal mines andAerogenesis condition, avoids shale gas-bearing reservoir destroyed, improves gas production, the invention provides a kind of mensuration system,Described system comprises: air extractor, feeder, agitating device, heater, gas collecting device andGas measurement device; Wherein, described air extractor is by the first pipeline and second pipe and described feederConnect, for carrying out degassed to shale sample; Described agitating device is by the 3rd pipeline and described second pipeConnect, for stirring described shale sample and fracturing fluid; Described feeder is used to described agitating device to carryFor the gas of fixation pressure; Described heater is connected with the first pipeline by described spiral tracheae, for protectingDemonstrate,prove described gas constant temperature; Described gas collecting device is connected with described spiral tracheae by described the 4th pipeline,Be used for gathering described gas; Described gas measurement device is connected with described the 4th pipeline by measuring channel, usesIn utilizing drainage, described gas volume is measured.
Below by drawings and the specific embodiments, technical scheme of the present invention is described in further detail.
The present embodiment provides a kind of mensuration system, and as shown in Figure 1, described system comprises: air extractor 1,Agitating device 2, feeder 3, heater 4, gas collecting device 5, concentration detection apparatus 6 and gasFluid measurement device 7; Wherein,
Described air extractor 1 is connected with one end of the second tracheae 12 by the first tracheae 11, described the second gasThe other end of pipe 12 is connected with described feeder 3, and described agitating device 2 is by the 3rd tracheae 13 and instituteState the second tracheae 12 and connect, when installing after shale sample in described agitating device 2, described air extractor 1For carrying out degassed to described shale sample. Wherein, one end of described the first tracheae 11 and described air extractor1 connects, and described the second tracheae 12 is stainless steel tracheae.
Particularly, described air extractor 1 specifically comprises: vavuum pump. On described the first pipeline 11, be provided withOne valve 14, is provided with the second valve 15 on described the second tracheae 12; On described agitating device 2, be provided withThe first storage tank air bleeding valve 21 and the second storage tank air bleeding valve 22; When needs carry out when degassed described shale sample,Open the first valve 14, the first storage tank air bleeding valve 21 and the second storage tank air bleeding valve 22, by vavuum pump to instituteStating shale sample carries out degassed. Wherein, described the first valve 14 is vacuum pump switch valve, described the second valve15 is source of the gas valve.
Here, described agitating device 2 also comprises: storage tank 23, the first support 24, claw 25, base 26,Shaft coupling 27 and motor 28; Wherein, described storage tank 23 is arranged on described the first support 24, for puttingPut described shale sample; The first fixing hole 29 of one side of described claw 25 and described the first support 24 1 sidesConnect, the opposite side of described claw 25 is connected with the second fixing hole 30 of described the first support 24 opposite sides;One end of described the first support 24 is arranged on described base 26, the other end of described the first support 34 and instituteOne end of stating shaft coupling 27 connects; The other end of described shaft coupling 27 is connected with described motor 28. Wherein,Described the first support 24 is runing rest.
When described vavuum pump described shale sample is carried out degassed after, start described motor 28 and make described storage tank23 vibrations, short range reciprocating rotation, fully stirs described shale sample.
After described shale sample fully stirs, utilize feeder 3 to provide fixing for described agitating device 2The gas of pressure, carries out saturated pressurization to described shale sample. Particularly, close described air extractor 1 andThe first valve 14, opens described the first storage tank air bleeding valve 21 and the second storage tank air bleeding valve 22, adjusts the first valveDoor 14 makes pressure stability, and described shale sample was carried out to saturated pressurization about 4～8 hours, preferably,It is 5 hours.
Described feeder 3 comprises: gas tank 31 and Pressure gauge 32; Wherein, described Pressure gauge 32 is arranged onDescribed gas tank 31 one end, for testing the pressure in described gas tank 31. Described gas tank 31 has pressure and showsWith regulation output function.
Further, described heater 4 is for ensureing described gas constant temperature; Described heater 4 comprises:Constant temperature oil bath tank 41, the 3rd valve 16 and spiral tracheae 42. The other end of described the first tracheae 11 with described inOne end of spiral tracheae 42 connects, and described spiral tracheae 42 is arranged in described constant temperature oil bath tank 41, described inConstant temperature oil bath tank 41 is by the mode transferring heat of electric oil medium, to the gas in described spiral tracheae 42Body heats.
The other end of described spiral tracheae 42 is connected with described gas collecting device 5, described gas collecting device5 for gathering described gas; Particularly, described gas collecting device 5 comprises: the 4th tracheae 51, dryDevice 52 and gas collection bag 53; One end of described the 4th tracheae 51 is connected with the other end of described spiral tracheae 42,Described drier 52 is arranged on described the 4th tracheae 51, described gas collection bag by the 5th tracheae 54 with described inThe 4th tracheae 51 connects, and on described the 5th tracheae 54, is provided with the 4th valve 55; Described the 4th valve 55Be specially gas collection bag 53 switch valves.
Here, when gas collection bag 53 is collected after gas, the dioxy of described concentration detection apparatus 6 to described gasThe concentration of changing carbon, fuel gas and methane detects. Particularly, described concentration detection apparatus 6 comprises:Carbon dioxide probe 61, combustible gas probe 62 and methane probe 63. Described carbon dioxide probe 61, canCombustion gas probe 62 and methane probe 63 are successively set on respectively on described the 4th tracheae 51.
When the concentration of carbon dioxide, fuel gas and the methane of described concentration detection apparatus 6 to described gas is enteredAfter row detects, described gas measurement device 7 is for utilizing drainage to measure described gas volume. ToolBody ground, described gas measurement device comprises: the 5th valve 70, water injection tank 71, the 6th valve 72, measurementPipeline 73, waste liquid tank 74 and the 7th valve 75; Wherein, one end of described water injection tank 71 and described measuring tubeThe one end in road 73 connects; Between described measuring channel 73 and described methane probe 63, be provided with the 5th valve70; Between one end of one end of described water injection tank 71 and described measuring channel 73, be provided with the 6th valve 72;One end of described measuring channel 73 is arranged on described the second support 76, the other end of described measuring channel 73Be connected with described waste liquid tank 74. Between the other end of described measuring channel 73 and described waste liquid tank 74, be provided withThe 7th valve 75. Described the 5th valve 70 is eudiometry switch valve, and described the 6th valve 72 is water injection tank71 switch valves, described the 7th valve 75 is draining valve.
Here, described measuring channel 73, for being with graduated transparent pipeline, comprising: the first measuring channel 77,The second measuring channel 78, the 3rd measuring channel 79 and the 4th measuring channel 80; Described the first measuring channel 77The other end on be provided with the 8th valve 81, on the other end of described the second measuring channel 78, be provided with the 9thValve 82, is provided with the tenth valve 83 on the other end of described the 3rd measuring channel 79, the described the 4th measuresOn the other end of pipeline 80, be provided with the 11 valve 84. The diameter of described the first measuring channel 77 is 2mm,The diameter of described the second measuring channel 78 is 4mm, and the diameter of described the 3rd measuring channel 79 is 6mm,The diameter of described the 4th measuring channel 80 is 8mm. Described the 8th valve 81, the 9th valve 82, the tenth valveDoor the 83 and the 11 valve 84 is measuring channel 73 switch valves.
When practical application, while utilizing native system to measure shale sample air adsorption capacity to measure, comprise withLower step:
Step a, opens storage tank 23, adds the shale sample of certain order number,, preferably, be 40 orders; ForAbundant stirring, wearing and tearing shale sample, make the refinement of described shale sample, then add the steel ball of different-grain diameter,Cover storage tank 23, described storage tank 23 is placed in the groove of the first support 24, in the upper end of storage tank 23Stationary jaw 25, by the first fixing hole 29 of a side of described claw 25 and described the first support 24 1 sidesBe connected and fixed the second fixing hole 30 of the opposite side of described claw 25 and described the first support 24 opposite sidesBe connected and fixed; Tighten set bolt and clamping screw.
Step b, opens the first valve 14, the first storage tank air bleeding valve 21 and the second storage tank air bleeding valve 22, closesClose other residue valves, start air extractor 1, shale sample is carried out to degassed processing five hours.
Step c, starter motor 38 makes storage tank 23 start vibrations, and short range reciprocating rotation, fully stirsShale sample.
Steps d, closes air extractor 1 and the first valve 14, opens the first storage tank air bleeding valve 21 and the second storageTank air bleeding valve 22, adjusts gas tank 31 valves and makes pressure stability in default force value, closes residue valve,Described shale sample is carried out to saturated pressurization five hours, make the abundant adsorbed gas of described shale sample.
Step e, starter motor 38 makes storage tank 23 start vibrations, and short range reciprocating rotation, fully stirsShale sample.
Step f, closes the 5th valve 70, in water injection tank 71, injects clear water, open state the 8th valve 81,The 9th valve 82, the tenth valve the 83 and the 11 valve 84, make the first measuring channel 77, the second measurementLiquid level in pipeline 78, the 3rd measuring channel 79 and the 4th measuring channel 80 is identical, closes describedSix valves 72 and described the 7th valve 76, liquid level stabilizing.
Step g, closes gas tank 31 and the first valve 11, by the first storage tank air bleeding valve 21 and the second storage tankAir bleeding valve 22 injects fracturing fluid in storage tank 23, and described fracturing fluid comprises: water, thickening agent, gel breaker,Drag reducer, inhibitor and bactericide. Wherein, described thickening agent is natural plant gum polymer, as guar gum; InstituteStating gel breaker is peroxide etc., as ammonium persulfate; Described drag reducer is linear polymer, as modification poly-thirdAlkenylamide derivative; Described inhibitor is clay inhibitor, as potassium chloride; Described bactericide is surface-activeAgent, as 1227 surfactants.
Step h, starter motor 38 makes storage tank 23 start vibrations, and short range reciprocating rotation, fully stirsShale sample and fracturing fluid.
Step I, opens the 3rd valve 16, start heater 4, and design temperature heats. Described temperatureDegree is generally 30～80 DEG C.
Step j, opens the 5th valve 70, makes the gas after heating pass through successively drier 52, titanium dioxideCarbon probe 61, combustible gas probe 62 and methane probe 63.
Step k, according to the first measuring channel 77, the second measuring channel 78, the 3rd measuring channel 79 andLiquid level in four measuring channels 80 each gas volume that converts. Here, described the first measuring channel 77,The caliber difference of the second measuring channel 78, the 3rd measuring channel 79 and the 4th measuring channel 80, its markCalibration is also different, and it is more accurate that thin pipe is surveyed, if gas volume is very large, needs the measuring tube in extra heavy pipe footpathRoad is surveyed.
Mensuration system provided by the invention can be carried out shale sample gas absorption ability under fracturing fluid effectMeasure, obtain the indoor effective theory data of gas desorption under fracturing fluid effect, to simulate working environment at coal minesWith aerogenesis condition, avoid shale gas-bearing reservoir destroyed, improve gas production. And native system is simple in structure, easilyIn popularization.
The above, be only preferred embodiment of the present invention, is not intended to limit protection model of the present inventionEnclose, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all shouldWithin being included in protection scope of the present invention.
Claims (10)
1. a mensuration system, is characterized in that, described system comprises: air extractor, agitating device, confessionDevice of air, heater, gas collecting device and gas measurement device; Wherein,
Described air extractor is connected with described feeder by the first pipeline and second pipe, for to shaleSample carries out degassed;
Described agitating device is connected with described second pipe by the 3rd pipeline, for stirring described shale sampleWith fracturing fluid;
Described feeder is used to described agitating device that the gas of fixation pressure is provided;
Described heater is connected with the first pipeline by described spiral tracheae, for ensureing described gas constant temperature;
Described gas collecting device is connected with described spiral tracheae by described the 4th pipeline, described in gatheringGas;
Described gas measurement device is connected with described the 4th pipeline by measuring channel, for utilizing drainage pairDescribed gas volume is measured.
2. the system as claimed in claim 1, is characterized in that, described air extractor comprises: vavuum pump.
3. the system as claimed in claim 1, is characterized in that, described feeder comprises: gas tank, pressurePower table; Wherein, described Pressure gauge is arranged on described gas tank one end, for testing the pressure of described gas tank.
4. the system as claimed in claim 1, is characterized in that, described agitating device comprises: storage tank,One support, claw, base, shaft coupling and motor; Wherein,
Described storage tank is arranged on described the first support, for placing described shale sample;
One side of described claw is connected with the first fixing hole of described the first support one side, another of described clawSide is connected with the second fixing hole of described the first support opposite side;
One end of described the first support is arranged on described base, the other end of described the first support and describedOne end of axial organ connects;
The other end of described shaft coupling is connected with described motor.
5. the system as claimed in claim 1, is characterized in that, described heater comprises: constant temperature oil bathTank.
6. the system as claimed in claim 1, is characterized in that, described gas collecting device comprises: dryDevice, gas collection bag; Wherein,
Described drier is for being dried described gas;
Described gas collection bag is used for gathering described gas.
7. the system as claimed in claim 1, is characterized in that, described system also comprises: concentration detects dressPut, detect for the concentration of the carbon dioxide to described gas, fuel gas and methane.
8. the system as claimed in claim 1, is characterized in that, described concentration detection apparatus comprises: dioxyChange carbon probe, combustible gas probe and methane probe.
9. the system as claimed in claim 1, is characterized in that, described gas measurement device comprises: water fillingTank, measuring channel and waste liquid tank; Wherein,
One end of described water injection tank is connected with one end of described measuring channel;
The other end of described measuring channel is connected with described waste liquid tank.
10. the system as claimed in claim 1, is characterized in that, described fracturing fluid comprises: water, multiviscosistyAgent, gel breaker, drag reducer, inhibitor and bactericide.
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| CN201610108129.3A CN105606487A (en) | 2016-02-26 | 2016-02-26 | Measuring system |
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| CN201610108129.3A CN105606487A (en) | 2016-02-26 | 2016-02-26 | Measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109115895A (en) * | 2017-06-23 | 2019-01-01 | 中国石油天然气股份有限公司 | Performance test system and method of cleanup additive for shale gas fracturing |
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