CN103323413B - Spectrum continuous gas detection logging device and method - Google Patents
Spectrum continuous gas detection logging device and method Download PDFInfo
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Abstract
nullThe present invention relates to a kind of spectrum continuous gas detection logging device and method，Spectrum continuous gas detection logging device is by air pump、Gas distribution module、Alkane component gas detection function module、Carbon dioxide detection functional module、CO (carbon monoxide converter) gas detection functional module、Hydrogen sulfide gas detection functional module、Computer control system forms，The master data utilizing spectrum continuous gas detection logging device first to measure calibrating gas is stored in computer control system，Utilize the sample gas in the drilling strata fluid that engine degasser continuous acquisition circulating fluid carries，By spectrum continuous gas detection logging device, the various component gas in sample gas are carried out spectrum continuous detecting，Compose the spectrum mud logging software application calibrating gas master data of continuous gas detection logging device，Alkane in detection drilling strata fluid in real time、Carbon monoxide、Carbon dioxide、Stink damp body burden information；By spectrum gas detection logging software quick look formation fluid property, it is achieved the continuous gas detection logging of spectrum.
Description
Technical field
The present invention relates to the continuous gas detection logging device and method in a kind of petroleum exploration and development process, belong to petroleum exploration and development
During mud logging techniques field.
Background technology
Gas detection logging is the important means detecting and judging drilling strata fluid properties in petroleum exploration and development process.Traditional gas
Surveying logging device and method is to utilize gas chromatographic technique, develop methane in gas chromatogram logging device detection drilling strata fluid,
The content information of the alkane components such as ethane, propane, butane, pentane；TCD thermal conductance technology for detection device is utilized to detect drilling strata
The content information of the carbon dioxide in fluid, utilizes electrochemical method to detect stink damp body burden information.
Traditional gas detection logging logging method on the one hand gas detection logging data are discontinuous, and on the other hand logging device structure is complicated,
It is unfavorable for the exploration and development of thin layer petroleum resources.
Patent documentation " uses gas content method during spectroanalysis instrument fast quantitative analysis oil exploration drilling
(CN1731147) gas content method during one spectroanalysis instrument fast quantitative analysis oil exploration drilling " is recorded.Should
Invention is that gas to be measured is entered gas flow cell after treatment, detects, in spectrum analysis work through Infrared irradiation and detector
Infrared spectrum and the content of each component of alkane of sample it is calculated in standing.The alkane component detection data of the method there is also
In the analytical calculation cycle, it is unfavorable for the promptly and accurately discovery of thin layer, Fractured petroleum resources.
Patent documentation " a kind of continuous spectrum gas detection logging device (CN201943685U) " relates to a kind of continuous spectrum gas and surveys record
Well device, this continuous spectrum gas detection logging device, make use of spectrum technology, can be with continuous detecting alkane during well logging
Component gases information.This device only detects alkane component gas content information in formation fluid, lack carbon dioxide, carbon monoxide,
The non-hydrocarbon component gas content information such as hydrogen sulfide, are unfavorable for on-the-spot accurate evaluation drilling strata fluid properties.
Summary of the invention
The invention aims to overcome the problems such as detected gas kind in above-mentioned prior art is not comprehensive or discontinuous, it is provided that
A kind of spectrum continuous gas detection logging device.
Another object of the present invention provides the method utilizing spectrum continuous gas detection logging device to realize the continuous gas detection logging of spectrum.
The spectrum continuous gas detection logging device of the present invention is mainly by air pump, gas distribution module, paraffin gas component detection merit
Can module, carbon dioxide detection functional module, CO (carbon monoxide converter) gas detection functional module, stink damp detecting functions mould
Block, computer control system, LCDs, human computer conversation's module and power supply etc. form, realize methane in drilling strata fluid,
Ethane, propane, iso-butane, normal butane, isopentane, pentane, hydrogen sulfide, carbon dioxide, carbon monoxide ten kinds of gases
Continuous detecting.
Spectrum of the present invention continuous gas detection logging method comprises the following steps:
First measure the absorption cross-section data of standard alkane component gas, utilize the carbon monoxide of variable concentrations, carbon dioxide,
Hydrogen sulfide standard gas demarcates carbon dioxide detection functional module, CO (carbon monoxide converter) gas detection functional module, hydrogen sulfide gas
Detection functional module；Utilize the sample gas in the drilling strata fluid that engine degasser continuous acquisition circulating fluid carries, by light
Compose continuous gas detection logging device and the various component gas in sample gas are carried out spectrum continuous detecting, relative analysis alkane component gas
Absorption cross-section data, carbon monoxide, carbon dioxide, hydrogen sulfide gas nominal data, obtain first in drilling strata fluid in real time
Alkane, ethane, propane, iso-butane, normal butane, isopentane, pentane, carbon monoxide, carbon dioxide, hydrogen sulfide gas contain
Amount information；By spectrum gas detection logging software quick look formation fluid property, it is achieved the continuous gas detection logging of spectrum.
The present invention, according to spectroscopic gas Cleaning Principle, utilizes spectrum continuous gas detection logging device detection degasser to meet from carrying brill
Each component gas content letter in the isolated sample gas of drilling fluid of formation fluid information, continuous detecting and analysis drilling strata fluid
Breath, it is achieved the continuous gas detection logging of spectrum.Gas detection logging data realize analyzing continuously, can promptly and accurately judge drilling strata fluid
Character, beneficially thin layer petroleum resources, the discovery of Fractured petroleum resources, the generation of prevention wellbore construction accident, improves oil gas
Exploration and development benefit.
Accompanying drawing explanation
Fig. 1 is present invention process FB(flow block)；
Fig. 2 is the absorption cross-section curve of seven kinds of alkane component gases；
Fig. 3 is the calibration curve of three kinds of non-hydrocarbon component gases；
Fig. 4 is spectrum of the present invention continuous gas detection logging working state schematic representation；
Fig. 5 is spectrum continuous gas detection logging device 5 structural representation of the present invention；
Fig. 6 is specific embodiment of the invention present invention alkane group in continuous detecting drilling strata fluid in well logging work progress
Divide gas concentration data；
Fig. 7 present invention is real-time interpretation drilling strata fluid type in well logging work progress.
Detailed description of the invention
In conjunction with accompanying drawing, the present invention is described further.
As shown in Figure 5, the spectrum continuous gas detection logging device of the present invention, by air pump 8, gas distribution module 9, alkane
Component gas detection functional module 10, carbon dioxide detect functional module 11, CO (carbon monoxide converter) gas detects functional module 12,
Hydrogen sulfide gas detection functional module 13, computer control system 14, power supply 17 form, and air pump 8 distributes module with gas
9 are connected by gas pipeline；Gas distribution module 9 by gas pipeline respectively with alkane component gas detection function module 10, titanium dioxide
Carbon gas detection function module 11, CO (carbon monoxide converter) gas detection functional module 12, hydrogen sulfide gas detection functional module 13 connect；
Computer control system 14 is examined with air pump 8, gas distribution module 9, alkane component gas respectively by control line and data wire
Brake module 10, carbon dioxide detection functional module 11, CO (carbon monoxide converter) gas detection functional module 12, stink damp
Detecting functions module 13 connects；The data that computer control system 14 obtains are connected to compound logging by data line 7
Instrument.
Described alkane component gas detection function module 10, carbon dioxide detect functional module 11, carbon monoxide gas
With blow-down pipe 6 after sample gas pipeline parallel connection after detection functional module 13 analysis of detecting functions module 12, hydrogen sulfide gas
Connect.
Described computer control system 14 is connected with LCDs 15, human computer conversation's module 16 respectively by data wire,
Logging data can be shown in real time, and realize human computer conversation.
Power supply 17 detects function mould with alkane component gas detection function module 10, carbon dioxide respectively by power line
Block 11, CO (carbon monoxide converter) gas detection functional module 12, hydrogen sulfide gas detection functional module 13, computer control system 14,
LCDs 15, human computer conversation's module 16 connect, and provide working power for them.
From accompanying drawing 1 and Fig. 4, the method for the continuous gas detection logging of spectrum that the present invention provides is: first measure standard alkane
The absorption cross-section data of component gas, utilize the carbon monoxide of variable concentrations, carbon dioxide, hydrogen sulfide standard gas to demarcate dioxy
Change carbon gas detection function module, CO (carbon monoxide converter) gas detection functional module, hydrogen sulfide gas detection functional module；Utilize electronic
Sample gas in the drilling strata fluid that degasser continuous acquisition circulating fluid carries, by spectrum continuous gas detection logging device to sample
Various component gas in product gas carry out spectrum continuous detecting, the absorption cross-section data of relative analysis alkane component gas, an oxidation
Carbon, carbon dioxide, hydrogen sulfide gas nominal data, obtain in real time methane in drilling strata fluid, ethane, propane, iso-butane,
Normal butane, isopentane, pentane, carbon monoxide, carbon dioxide, stink damp body burden information；Soft by spectrum gas detection logging
Part quick look formation fluid property, it is achieved the continuous gas detection logging of spectrum.Its detailed description of the invention comprises the following steps:
1, measurement standard gas master data.
1.1 measurement standard alkane component GAS ABSORPTION cross-section datas.
1.1.1 spectrum continuous gas detection logging device 5 power supply, after preheating 30 seconds, spectrum continuous gas detection logging device 5 are connected
In dark current signals I (1) formula (1) of interior computer control system 14 surveying record alkane component gas detection function module 10,
σ (λ) is alkane component GAS ABSORPTION cross-section data, without unit；Pa(λ), detection in alkane component gas detection function module 10
Pond pressure P (unit pa) and temperature T (unit K)；
1.1.2 being continually fed into pure nitrogen 60 seconds, the computer control system 14 in spectrum continuous gas detection logging device 5 is surveyed
The background spectrum current signal I of amount record alkane component gas detection function module 100(λ)；
1.1.3 being passed through pure methane sample gas, the computer control system 14 in spectrum continuous gas detection logging device 5 measures note
Absorption spectrum current signal I (λ) of record alkane component gas detection function module 10；
1.1.4 formula (1) is utilized to calculate absorption cross-section data σ of methane gasMethane(λ), and by computer control system 14 store.
In formula (1), σ (λ) is alkane component GAS ABSORPTION cross-section data, without unit；P0=1.01333 × 105pa、T0=273.16K,
n0=2.687 × 1019；P is detection cell pressure, unit pa in alkane component gas detection function module 10, and T is alkane component gas
Detection cell temperature, unit K in detecting functions module 10.
Utilize ethane, propane, iso-butane, normal butane, isopentane, pentane respectively repeat steps 1.1.1, step 1.1.2,
Step 1.1.3, step 1.1.4, calculate ethane, propane, iso-butane, normal butane, isopentane, the suction of pentane gas respectively
Receive cross-section data σEthane(λ)、σPropane(λ)、σIso-butane(λ)、σNormal butane(λ)、σIsopentane(λ)、σPentane(λ), and by computer control
System 14 processed stores.
Fig. 2 be the embodiment of the present invention measure standard methane, ethane, propane, iso-butane, normal butane, isopentane, just
The absorption cross-section data and curves of seven kinds of alkane component gases of pentane.
1.2 demarcate carbon dioxide detection functional module, CO (carbon monoxide converter) gas detection functional module, hydrogen sulfide gas detection
Functional module.
1.2.1 spectrum continuous gas detection logging device 5 is utilized to detect 0%, 0.1%, 1%, 10%, 50%, 100% carbon dioxide
Calibrating gas, computer control system 14 records the output DC current signal of carbon dioxide detection functional module 11 correspondence, does
Go out carbon dioxide calibration curve, as it is shown on figure 3, and pass through the calibration formula (2) being calculated carbon dioxide, storage
In computer control system 14.
In formula (2), Cco2It is density of carbon dioxide gas, unit: %, Dco2It is that carbon dioxide detects functional module
11 output electric currents, unit: mA.
1.2.2 spectrum continuous gas detection logging device 5 is utilized to detect 0%, 0.1%, 1%, 10%, 50%, 100% carbon monoxide
Calibrating gas, computer control system 14 records the output DC current signal of Carbon Monoxide Detection functional module 12 correspondence, does
Go out CO (carbon monoxide converter) gas calibration curve, as it is shown on figure 3, and pass through the calibration formula (3) being calculated CO (carbon monoxide converter) gas, storage
In computer control system 14.
In formula (3), CcoIt is carbon monoxide gas concentration, unit: %, DcoIt is that CO (carbon monoxide converter) gas detects functional module 12
Output electric current, unit: mA.
1.2.3 spectrum continuous gas detection logging device 5 is utilized to detect 0ppm, 1ppm, 10ppm, 50ppm, 100ppm sulfur
Changing hydrogen calibrating gas, computer control system 14 records the output DC current signal of sulfurated hydrogen detection functional module 13 correspondence,
Make hydrogen sulfide gas calibration curve, as it is shown on figure 3, and through being calculated the calibration formula (4) of hydrogen sulfide gas, be stored in
Computer control system 14.
In formula (4), CH2SIt is sulfureted hydrogen gas concentration, unit: ppm, DH2SIt is that hydrogen sulfide gas detects functional module 13
Output electric current, unit: mA.
2, continuous detecting drilling strata fluid sample gas constituent content information.
As shown in Figure 4, engine degasser 2 is arranged on drilling fluid and makes somebody a mere figurehead in groove 1, and engine degasser 2 follows in built on stilts groove 1
The drilling fluid 3 carrying drilling strata fluid of ring is stirred degassing, and the sample gas of abjection is sent into through gas pipeline 4 and is arranged on
Indoor spectrum continuous gas detection logging device 5 is analyzed continuously.
By spectrum continuous gas detection logging device 5, by alkane in alkane component gas detection function module 10 continuous detecting sample gas
The absorption spectrum current signal I of hydrocarbon component mixed gasAlways(λ), IAlways(λ) be methane, ethane, propane, iso-butane, normal butane,
Isopentane, the superposition of pentane gas absorption spectra current signal.Spectrum mud logging software in computer control system 14 calls σMethane(λ)、σEthane(λ)、σPropane(λ)、σIso-butane(λ)、σNormal butane(λ)、σIsopentane(λ)、σPentane(λ) every kind of alkane group is calculated
The concentration of part gas, it is achieved the continuous detecting of alkane component gas content information, testing result is stored in computer control system 14.
Carbon dioxide gas content information D in carbon dioxide detection functional module 11 continuous detecting sample gasco2, computer
Spectrum mud logging software in control system 14 calculates the concentration of carbon dioxide according to formula (2).
Carbon monoxide gas body burden information D in CO (carbon monoxide converter) gas detection functional module 12 continuous detecting sample gasco, computer
Spectrum mud logging software in control system 14 calculates the concentration of CO (carbon monoxide converter) gas according to formula (3).
Stink damp body burden information D in hydrogen sulfide gas detection functional module 13 continuous detecting sample gasH2S, computer controls
Spectrum mud logging software in system 14 calculates the concentration of hydrogen sulfide gas according to formula (4).
Present invention alkane component in continuous detecting drilling strata fluid in well logging work progress is i.e. can get according to above-mentioned steps 2
Gas concentration data, as shown in Figure 6.
3, formation fluid type is explained
It is installed on the logging explanation software in spectrum continuous gas detection logging device computer control system 14, according to traditional triangle
Chart method, ratio method and pik Si Lefa to methane, ethane, propane, iso-butane, normal butane, isopentane, pentane, two
Carbonoxide, carbon monoxide, sulfurated hydrogen detection result carry out quick look, explain the type of drilling strata fluid.
Present invention type of real-time interpretation drilling strata fluid in well logging work progress is i.e. can get according to above-mentioned steps 3, as
Shown in Fig. 7.
Claims (5)
1. a spectrum continuous gas detection logging method, is characterized in that comprising the following steps: first measure standard alkane component gas
Absorption cross-section data, utilize the carbon monoxide of variable concentrations, carbon dioxide, hydrogen sulfide standard gas demarcate carbon dioxide gas health check-up
Brake module, CO (carbon monoxide converter) gas detection functional module, hydrogen sulfide gas detection functional module；Engine degasser is utilized to adopt continuously
Sample gas in the drilling strata fluid that collection circulating fluid carries, by spectrum continuous gas detection logging device to various groups in sample gas
Divide gas to carry out spectrum continuous detecting, call analysis the absorption cross-section data of alkane component gas, carbon monoxide, carbon dioxide, sulfur
Change hydrogen nominal data, obtain in real time methane in drilling strata fluid, ethane, propane, iso-butane, normal butane, isopentane,
Pentane, carbon monoxide, carbon dioxide, stink damp body burden information；By spectrum gas detection logging software quick look formation fluid
Character, it is achieved the continuous gas detection logging of spectrum.
Spectrum the most according to claim 1 continuous gas detection logging method, is characterized in that: standard alkane component GAS ABSORPTION cross section
DATA REASONING completes according to the following steps: (1) connects spectrum continuous gas detection logging device (5) power supply, and after preheating 30 seconds, spectrum is continuous
The dark current letter of computer control system (14) surveying record alkane component gas detection function module (10) in gas detection logging device (5)
Number Ia(λ), alkane component gas detection function module (10) interior detection cell pressure P and temperature T；
(2) it is continually fed into pure nitrogen 60 seconds, computer control system (14) surveying record in spectrum continuous gas detection logging device (5)
The background spectrum current signal I of alkane component gas detection function module (10)0(λ)；
(3) it is passed through pure methane sample gas, computer control system (14) the surveying record alkane in spectrum continuous gas detection logging device (5)
Absorption spectrum current signal I (λ) of hydrocarbon component gas detection functional module (10)；
(4) formula (1) is utilized to calculate absorption cross-section data σ of methane gasMethane(λ), and stored by computer control system (14),
In formula (1), σ (λ) is alkane component GAS ABSORPTION cross-section data, without unit；P0=1.01333 × 105pa、T0=273.16K,
n0=2.687 × 1019；P is alkane component gas detection function module (10) interior detection cell pressure, unit pa, and T is alkane component gas
Detecting functions module (10) interior detection cell temperature, unit K；
Utilize ethane, propane, iso-butane, normal butane, isopentane, pentane repeat the above steps (1) respectively, step (2), step
Suddenly (3), step (4), calculate the absorption cross-section data of ethane, propane, iso-butane, normal butane, isopentane, pentane gas
σEthane(λ)、σPropane(λ)、σIso-butane(λ)、σNormal butane(λ)、σIsopentane(λ)、σPentane(λ), and by computer control system (14) store.
Spectrum the most according to claim 1 continuous gas detection logging method, is characterized in that: carbon dioxide detection functional module,
CO (carbon monoxide converter) gas detection functional module, hydrogen sulfide gas detection functional module are demarcated and are completed according to the following steps:
Spectrum continuous gas detection logging device (5) is utilized to detect 0%, 0.1%, 1%, 10%, 50%, 100% carbon dioxide standard
Gas, the output DC current signal that computer control system (14) record carbon dioxide detection functional module (11) is corresponding, make two
Carbon oxide gas calibration curve, and through being calculated the calibration formula (2) of carbon dioxide, it is stored in computer control system
(14)；
In formula (2), Cco2It is density of carbon dioxide gas, unit: %, Dco2It it is carbon dioxide detection functional module (11)
Output electric current, unit: mA；
Spectrum continuous gas detection logging device (5) is utilized to detect 0%, 0.1%, 1%, 10%, 50%, 100% Standard CO,
The output DC current signal that computer control system (14) record Carbon Monoxide Detection functional module (12) is corresponding, makes carbon monoxide
Demarcate Gas curve, and through being calculated the calibration formula (3) of CO (carbon monoxide converter) gas, it is stored in computer control system (14)；
In formula (3), CcoIt is carbon monoxide gas concentration, unit: %, DcoIt it is CO (carbon monoxide converter) gas detection breath functional module (12)
Output electric current, unit: mA；
Spectrum continuous gas detection logging device (5) is utilized to detect 0ppm, 1ppm, 10ppm, 50ppm, 100ppm hydrogen sulfide Standard Gases
Body, the output DC current signal that computer control system (14) record sulfurated hydrogen detection functional module (13) is corresponding, make hydrogen sulfide
Demarcate Gas curve, and through being calculated the calibration formula (4) of hydrogen sulfide gas, it is stored in computer control system (14)；
In formula (4), CH2SIt is sulfureted hydrogen gas concentration, unit: ppm, DH2SIt it is hydrogen sulfide gas detection functional module (13)
Output electric current, unit: mA.
4. according to the continuous gas detection logging method of the spectrum described in Claims 2 or 3, it is characterised in that:
Engine degasser (2) is arranged on drilling fluid and makes somebody a mere figurehead in groove (1), and engine degasser (2) carries brill and meets built on stilts groove (1) interior circulation
The drilling fluid (3) of formation fluid is stirred degassing, and the spectrum that the sample gas of abjection is arranged on indoor through gas pipeline (4) feeding is continuous
Gas detection logging device (5) is analyzed continuously；
The absorption spectrum electric current letter of alkane component mixed gas in alkane component gas detection function module (10) continuous detecting sample gas
Number IAlways(λ), IAlways(λ) it is methane, ethane, propane, iso-butane, normal butane, isopentane, pentane gas absorption spectra current signal
Superposition, the spectrum mud logging software in computer control system (14) calls σMethane(λ)、σEthane(λ)、σPropane(λ)、σIso-butane(λ)、σPositive fourth Alkane(λ)、σIsopentane(λ)、σPentane(λ) concentration of every kind of alkane component gases is calculated, it is achieved the continuous inspection of alkane component gas content information
Surveying, testing result is stored in computer control system (14)；
Carbon dioxide gas content information D in carbon dioxide detection functional module (11) continuous detecting sample gasco2, computer control
Spectrum mud logging software in system processed (14) calculates the concentration of carbon dioxide according to formula (2)；
Carbon monoxide gas body burden information D in CO (carbon monoxide converter) gas detection functional module (12) continuous detecting sample gasco, computer control
Spectrum mud logging software in system processed (14) calculates the concentration of CO (carbon monoxide converter) gas according to formula (3)；
Stink damp body burden information D in hydrogen sulfide gas detection functional module (13) continuous detecting sample gasH2S, computer controls system
Spectrum mud logging software in system (14) calculates the concentration of hydrogen sulfide gas according to formula (4).
Spectrum the most according to claim 1 continuous gas detection logging method, it is characterised in that:
It is installed on the logging explanation software in spectrum continuous gas detection logging device computer control system (14), according to traditional axonometric projection
Version method, ratio method and pik Si Lefa are to methane, ethane, propane, iso-butane, normal butane, isopentane, pentane, titanium dioxide
Carbon, carbon monoxide, sulfurated hydrogen detection result carry out quick look, explain drilling strata fluid type.
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| CN104975854A (en) * | 2014-04-09 | 2015-10-14 | 中国石油化工股份有限公司 | Petroleum underground while drilling gas detection device |
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