CN103822849A - Automatic field analyzer system for non-conventional gas - Google Patents
Automatic field analyzer system for non-conventional gas Download PDFInfo
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Abstract
The invention provides an automatic field analyzer system and a testing method for a non-conventional gas. The automatic field analyzer system comprises a gas collecting subsystem, a data acquiring subsystem, a system control subsystem and a data analyzing subsystem, wherein the gas collecting subsystem is used for acquiring gas flow data and controlling the start using of a flow machine; the data acquiring subsystem is used for acquiring air temperature data, air pressure data and gas temperature data; the system control subsystem is used for receiving the data of the gas collecting subsystem and the system acquiring subsystem and sending to the data analyzing subsystem; the data analyzing subsystem acquires data of samples to be tested and sets a measuring method for automatically testing each sample.
Description
Technical field
The present invention relates to the automatic computing technique of energy exploration, more specifically, the scene that relates to a kind of non-conventional gas is resolved instrument system and method for testing automatically.
Background technology
How non-conventional gas, as a kind of emerging energy,, as the strategic development direction of national energy development, assesses its potentiality to be exploited, the overall reserves of non-conventional gas, is the important indicator that instructs future development strategy.
From traditional angle, use at present measuring method more widely to have two kinds: artificial water balance method or people's chemical container method.The common disadvantage of this mensuration is artificial collection, makes data acquisition quantity not sufficient.Meanwhile, because the variation of temperature and pressure in environment causes expansion or the contraction of gas, directly affected final data result.In addition, also cannot calculate zone of interest rock core from drilled chance, rock core to ground and resolve the loss of adsorbed gas this process before tank until rock core is put into, and this part one of pith of total air content often.
Due to manual measurement cause cannot each step of accurate recording in the loss of gas, tend to cause that measurement data is on the low side or error is larger, there is relatively large deviation thereby affect last regretional analysis, accuracy is lower.
In Chinese invention patent CN100429529C, disclose a kind of method of utilizing full-wave train, dipole shear wave logging data to determine gas-bearing formation, the method is utilized rock physics feature, determine the air content of reservoir according to acoustic logging data, but do not consider the impact of temperature and pressure, and for particular surroundings, equipment utility ratio is lower.
In existing measuring process, another technology also existing is sealed coring, and from technical standpoint, this technology immature, says also very highly from becoming originally, from realizing angle, also cannot accomplish comprehensive generaI investigation to existing resource.
Summary of the invention
For overcoming existing defect, the present invention proposes a kind of scene of non-conventional gas and automatically resolves instrument system and disposal route.
According to an aspect of the present invention, propose a kind of automatic resolution system in scene of non-conventional gas, having comprised: gas collection subsystem, data acquisition subsystem, system control subsystem and Data Analysis subsystem;
Wherein, gas collection subsystem, for obtain gas flow data and and control the enabling of flow measuring unit; Data acquisition subsystem, for obtaining air themperature data, air pressure data and gas temperature data; System control subsystem, collects the data of subsystem and data acquisition subsystem, and sends to Data Analysis subsystem for receiver gases; Data Analysis subsystem, obtains the data of sample to be tested, and setting measurement method, carries out automatic test to each sample.
According to a further aspect in the invention, propose a kind of method of testing of the automatic resolution system in scene based on above-mentioned non-conventional gas, having comprised: step 1, on-the-spot test is prepared, drilling and coring delivery, fast selecting sample; Step 2, the automatic resolution system based on above-mentioned is resolved; Step 3, carries out tolerance Measurement and Computation, provides test report by data processing with gathering.
System of the present invention can be supported the continuous coverage of much more unlimited sample, considers the complex environment of field work, in order to guarantee the simplification of pocket and peripherals of this equipment, has designed the pipeline of 6 sample tests.Support the resolution data collection of 6 samples simultaneously.But, consider that the noncontinuity of resolving and whole sample resolve the attenuation process of gas, native system is supported in A sample and does not resolve completely in situation, changes B sample and resolve under same pipeline.All operations is without any constraint condition, and user can stop whenever and wherever possible, and native system can record parse state and the progress of each sample automatically, and can continue at any time to measure.So user can be according to on-the-spot actual conditions, continuous carry out Multi-example measurement, can increase work efficiency greatly, portable and efficient.
Compared to the process of resolving manually in the past, manual operation flow process complexity, the drawback such as cycle test duration is longer, and manual measurement error is larger, system of the present invention has realized the full-automatic parsing of completely unmanned hand.And variety classes and characteristic that can be per sample, independently set different method of testings and flow process.User can, according to current sample, arrange the different test durations, and test frequency and test period etc. parameter, formulate the testing scheme of a current sample.Meanwhile, different samples, can arrange different schemes, separate, does not interfere with each other.When starting after test, whole test process, without manual intervention, controls automatically, automatically finishes, and automatically generates result.Certainly, user can suspend test at any time, changes other samples.Reduce greatly cost of labor, and avoided manual testing's error large, tested the drawbacks such as incomplete.
System of the present invention can generate test result in real time automatically.In automatic test course, the record that system produces can integration testing time, generate in real time result form and result curve, and volume frequency and mode that user can produce from main control record, since meet the different otherness of different sample tolerance, field personnel can also be real-time from result form, particularly result curve, monitor and judge the gas collecting situation of current sample, adjust at any time or finish resolving, to realize each parsing optimization.Meanwhile, all records of this parsing can be preserved automatically, get back to laboratory further calculate and analyze for user.
Accompanying drawing explanation
Fig. 1 is the structural drawing according to automatic resolution system of the present invention;
Fig. 2 is according to the structured flowchart of Data Analysis subsystem of the present invention;
Fig. 3 is the test flow chart according to resolution system of the present invention.
As shown in the figure, in order clearly to realize structure or the method for embodiments of the invention, mark in the drawings specific label symbol, but this is only for signal needs, be not intended to limit the invention in this particular device and environment, according to specific needs, those of ordinary skill in the art can adjust these elements, label, environment, revise, and the adjustment of carrying out and modification are still included in the scope of accompanying claim.
Embodiment
Below in conjunction with the drawings and specific embodiments, instrument system is resolved to automatically in the scene of a kind of non-conventional gas provided by the invention and disposal route is described in detail.
In the following description, will multiple different aspects of the present invention be described, but, for those skilled in the art, can only utilize some or all structure of the present invention to implement the present invention.For the definition of explaining, set forth specific number, configuration and order, but clearly, in the situation that there is no these specific detail, also can implement the present invention.In other cases, in order not obscure the present invention, will no longer be described in detail for some well-known features.
Fig. 1 is according to the structural drawing of the automatic resolution system in scene of a kind of non-conventional gas of the present invention, and as shown in Figure 1, this automatic resolution system comprises gas collection subsystem, data acquisition subsystem, system control subsystem and Data Analysis subsystem.Wherein, gas collection subsystem, for obtain gas flow data and and control the enabling of flow measuring unit, comprise gas meter and coupled data acquisition unit; Data acquisition subsystem, for obtaining air themperature data, air pressure data and gas temperature data, comprises air temperature sensor, air pressure probe and resolution gas temperature sensor; System control subsystem, collect the data of subsystem and data acquisition subsystem for receiver gases, and send to Data Analysis subsystem, comprise recording controller and electric-controlled switch, recording controller is connected respectively to air temperature sensor, air pressure probe, resolution gas temperature sensor and data acquisition unit.System control subsystem, according to the step before each sample test and setting parameter, according to current sample tolerance, is exported 0/1 high electronegative potential by recording controller and is controlled electric-controlled switch, to reach the function of switch flowmeter.Wherein each Output Interface Control No. one flowmeter, thus guarantee that each test is separate, interference-free.
Wherein, Data Analysis subsystem, obtains the data of sample to be tested, and setting measurement method, carries out automatic test to each sample.
Fig. 2 is the structured flowchart of Data Analysis subsystem, and as shown in Figure 2, Data Analysis subsystem comprises data analytics subsystem, measures control subsystem, data acquisition subsystem and file storage subsystem.
Wherein, data acquisition subsystem is responsible for data and is read in, and comprises that sample sets up module and data collection module.Wherein, sample is set up module for inputting the various correlation parameters of sample to be tested, sets the measuring method of this sample, comprises length of testing speech and testing procedure, and the time interval of each step data collection.
Wherein, data collection module is for the flow reading of flowmeter is converted into DC voltage (0-10V) value, for other resume module.This module can be per sample actual conditions, set different frequency acquisitions and data processing method.
Wherein, file storage subsystem is responsible for storing relevant work to data, for the parameter of each sample, measurement data and test being carried out to the file that deposits in of real time status; And provide data preservation, data analysis, conclusion to derive, measure the abnormal functions such as recovery of interrupting.Wherein, file storage subsystem runs on system backstage with independent thread always, mutual with other modules.
Wherein, measure the automatic test of the responsible each sample of control subsystem, set up per sample the setting parameter of module, according to the measuring method of setting, carry out automatic test.Wherein need three parameters setting to comprise the data acquiring frequency in the duration in each stage, each stage and the end condition in each stage.This subsystem can, according to different samples, carry out autonomous parameters, also can carry out in test middle according to actual test case, change or undated parameter, effective in real time.
Wherein, data analytics subsystem is the work for completing data statistics and interpretation of result.This subsystem also need not wait for that current sample test completes, and this subsystem can reflect current resolution data in real time, and generates response curve, analyzes better for user.
For defining with the main relational language of native system and key parameter:
Gassiness total amount gas content: refer to that in unit mass shale, institute's air content is converted 0 ℃, volume when 101.325kPa, according to occurrence status, shale gas comprises adsorbed gas, free gas and solution gas; Be divided into resolution gas, residual gas, loss gas by measuring process.
Resolve tolerance desorbed gas: refer to that certain mass test sample enters sample and resolves in tank after sealing, the gas volume parsing under uniform temperature, pressure, time conditions from sample.
Residual volume residual gas: refer to the certain mass sample gas volume that pulverizing discharges after resolving.
Loss tolerance lost gas: refer to that certain mass sample starts the gas volume parsing before being resolved to sealed cans from shaft bottom, utilize the recurrence of native system to calculate, the gas volume of the loss that has neither part nor lot in test calculating.
Fig. 3 is according to the test flow chart of the automatic resolution system in scene of the present invention, the process flow diagram of the method setting that namely said system is mentioned.As shown in Figure 3, this method of testing comprises: step 1, and on-the-spot test is prepared, drilling and coring delivery, fast selecting sample; Step 2, the automatic resolution system based on above-mentioned is resolved; Step 3, carries out tolerance Measurement and Computation, provides test report by data processing with gathering.
Return to Fig. 1, in an object lesson, can carry out resolution data collection to six samples at most simultaneously, discharge per sample the size of tolerance, the time interval of data acquisition can be adjusted at any time, the collection capacity of data and the accuracy of data can be guaranteed to greatest extent.
In the process of data acquisition, can record environment temperature and the pressure in each gatherer process simultaneously, on final air content is calculated, can automatically convert the gas volume under normal pressure and temperature to.
Common data are calculated, often neglect sample and pack sample pot (Canister) from the external world into, until the variation of the gas volume causing because of the variation of temperature in this process of water bath (temperature control bath) causes the inaccurate of primary data.In the design of native system, the calculating that is comprising sample pot and sample cavity volume (headspace), temperature variation causes the variation of gas volume variable quantity, the impact of these factors on measured value, thus solve the problem of cannot Obtaining Accurate resolving initial value.
Wherein, in step 2, use native system to resolve further and comprise: determine the beginning condition of measuring of resolving, end condition is measured with determining to resolve in minute interval.
Wherein, resolve the beginning condition of measuring, refer to the parsing tank that sample good seal are housed is placed in rapidly to the thermostat that has reached design temperature, to resolve tank with flexible pipe is connected with gas dosing pick-up unit, start to resolve and regularly carry out gas volume data acquisition, recording environment temperature and atmospheric pressure data.
Wherein, minute interval, refers to after sample tinning, is not more than 5min surveys full 1h with interval, then surveys full 1h to be not more than 10min interval, surveys full 1h to be not more than 15min interval, surveys full 5h to be not more than 30min interval, and accumulative total is surveyed full 8h.Resolve continuously after 8h, gather related data at interval of certain hour, stop limit until resolve.But in application, the actual tolerance that native system can be per sample and test environment at that time, arrange test duration and test interval flexibly.
Wherein, resolve measurement end condition and refer to that lasting nature is resolved to parsing every day amount for three days on end and is not more than 5cm3, finish resolution gas body measurement.
Wherein, in step 3, carry out tolerance Measurement and Computation, data processing and gathering, finally provides test report.Comprise:
Step 31, measures residual volume;
Get 3 parts, sample after parsing, every part is greater than 100g, is respectively charged in the sealed sample tank of residual volume tester and pulverizes, after pulverizing more than standing 5min.
Gas dosing pick-up unit is connected with the pipeline of residual volume tester sealed sample tank, carries out a gas volume data acquisition at interval of 1h, continuous acquisition 4h, records gas volume, environment temperature, atmospheric pressure data.Residual gas content is got the mean value of 3 duplicate samples measurement results.
Step 32, calculation sample gas tolerance;
First the gas volume that converts, resolves naturally and the gas volume of residual gas mensuration gained should be converted under 0 ℃ of temperature, pressure 101.325kPa.
Reduction formula is shown in formula (1):
In formula: V
stp---the gas volume under standard state, cm
3; P
m---atmospheric pressure, kPa; T
m---environment temperature, ℃; V
m---gas volume, cm
3.
Calculate resolution gas content, see formula (2):
G
sd＝V
d/m
t （2）；
In formula: G
sd---resolution gas content, cm
3/ g; V
d---resolve tolerance, cm
3; m
t---sample gross mass, g.
Calculate residual gas content, see formula (3):
G
sr＝V
r/m
r （3）；
In formula: G
sr---residual gas content, cm
3/ g; V
r---residual volume, cm
3; m
r---residual gas sample quality, g.
Calculate lost time, determines lost time according to drilling strata time and rock core sealing time etc., and core for clear water or mud, computing formula is shown in formula (4):
Drilling well circulatory mediator is under foam or air conditions, and computing formula is shown in formula (5):
t
l＝t
4-t
1 （5）
In formula: t
l---lost time, h; t
1---drilling strata time, hh:mm:ss; t
2---trip-out time, hh:mm:ss; t
3---rock core bug time, hh:mm:ss; t
4---rock core sealed cans time, hh:mm:ss.
Counting loss tolerance
Loss air volume calculation is to accumulate parsing amount under standard state as ordinate, and the square root of time is horizontal ordinate mapping.In parsing tolerance and the subduplicate figure of time, the absolute value of the intercept of reverse extending line and axis of ordinates is loss tolerance, sees formula (6):
G
sl＝V
lost/m
t （6）
In formula: G
sl---loss gas content, cm3/g; V
lost---loss tolerance, cm
3; m
t---sample gross mass, g.
The overall air content of calculation sample, see formula (7):
G
s＝G
sd+G
sr+G
sl （7）；
By application native system, owing to cannot measuring the gas windage of sample before packing sample pot into, sum up the lost rule of gas of different samples, apply mechanically above-mentioned formula, according to resolution data curve, the windage of automatic returning gas.
In order to improve faster analyzing efficiency, trying one's best in the short time, obtain the total amount of adsorbed gas, adopt the method that water bath is heated, accelerate the resolving of gas, obtain the gas parsing amount of sample under the condition of high temperature.
For after being parsed, still also have remaining adsorbed gas in sample, again, to resolving sample sampling, pulverize, continue to obtain this part gas.
Native system is applicable to the use of shale gas and coal-seam gas simultaneously, is also applicable to rock core parsing and landwaste simultaneously and resolves.In the situation that not affecting normal drilling well, by the parsing to collection in worksite landwaste, also can obtain the gassiness total amount of zone of interest, shorten greatly the probing cycle, also greatly reduce drilling cost simultaneously.
Native system has complete data acquisition and calculating, comprise the sealed front loss gas of sample, resolution gas under normal temperature, the resolution gas of the condition of high temperature, and sample pulverize after resolution gas, this all gas flow summation has formed total air content of the research purpose layer of our needs, and these data are to determine the first-hand accurate data of next step exploration measure.
This robotization is resolved instrument system in realization, hardware components is import high quality components, through the test of the complex condition in varying environment and long-term Optimization Debugging, not only meet the functional requirement that resolve at current general scene, high precision, the high accuracy of the data acquisition of whole system are also guaranteed, the high leakproofness of System Operation, high-performance, to the high-adaptability of varying environment, and the feature such as long-life.Software section is take full automation as maximum object, to simplify user's operation, promote user and experience as direction, to guarantee that system precise and high efficiency is as principle, take the most widely used analytic method at present as basis, the artificial on-the-spot whole process of resolving of full-scope simulation, and consider various boundary conditions and extreme case, independent research a set of efficient complete algorithm, independent development complete parsing acquisition software, compatibility and support hardware completely, and the running of hardware is optimized.Guarantee this scene stability and advance of parsing instrument system automatically.
Finally it should be noted that, above embodiment is only in order to describe technical scheme of the present invention rather than this technical method is limited, the present invention can extend to other modification, variation, application and embodiment in application, and therefore thinks that all such modifications, variation, application, embodiment are in spirit of the present invention and teachings.
Claims (10)
1. the automatic resolution system in the scene of non-conventional gas, comprising: gas collection subsystem, data acquisition subsystem, system control subsystem and Data Analysis subsystem;
Wherein, gas collection subsystem, for obtain gas flow data and and control the enabling of flow measuring unit; Data acquisition subsystem, for obtaining air themperature data, air pressure data and gas temperature data; System control subsystem, collects the data of subsystem and data acquisition subsystem, and sends to Data Analysis subsystem for receiver gases; Data Analysis subsystem, obtains the data of sample to be tested, and setting measurement method, carries out automatic test to each sample.
2. system according to claim 1, wherein, gas collection subsystem comprises gas meter and coupled data acquisition unit; Data acquisition subsystem comprises air temperature sensor, air pressure probe and resolution gas temperature sensor; System control subsystem comprises recording controller and electric-controlled switch, recording controller is connected respectively to air temperature sensor, air pressure probe, resolution gas temperature sensor and data acquisition unit, recording controller is exported high electronegative potential and is controlled electric-controlled switch, with gauge tap flowmeter.
3. system according to claim 1, wherein, Data Analysis subsystem comprises data analytics subsystem, measures control subsystem, data acquisition subsystem and file storage subsystem.
4. system according to claim 3, wherein, data acquisition subsystem is responsible for data and is read in, and comprises that sample sets up module and data collection module;
Wherein, sample is set up module for inputting the various correlation parameters of sample to be tested, sets the measuring method of this sample;
Data collection module is for the flow reading of flowmeter is converted into DC voltage value, for other resume module.
5. system according to claim 3, wherein, file storage subsystem is for carrying out the parameter of each sample, measurement data and test the file that deposits in of real time status; And provide data preservation, data analysis, conclusion to derive, measure abnormal function of interrupting recovery.
6. system according to claim 3, wherein, measures the automatic test of the responsible each sample of control subsystem, sets up per sample the setting parameter of module, according to the measuring method of setting, carries out automatic test; Three parameters wherein setting comprise the data acquiring frequency in the duration in each stage, each stage and the end condition in each stage.
7. system according to claim 3, wherein, data analytics subsystem is the work for completing data statistics and interpretation of result.
8. a method of testing for the automatic resolution system in scene of one of them non-conventional gas based on claim 1-7, comprising:
Step 1, on-the-spot test is prepared, drilling and coring delivery, fast selecting sample;
Step 2, the automatic resolution system based on above-mentioned is resolved;
Step 3, carries out tolerance Measurement and Computation, provides test report by data processing with gathering.
9. method according to claim 8, wherein, step 2 further comprises:
Step 21, measures the beginning condition of measuring of resolving;
Step 22, measures test duration and the time interval;
Step 23, measures to resolve and measures end condition.
10. method according to Claim 8, wherein, step 3 further comprises:
Step 31, measures residual volume;
Step 32, calculation sample gas tolerance;
Step 33, calculates resolution gas content, residual gas content and loss tolerance;
Step 34, the overall air content of calculation sample.
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