CN101498215A - Enhanced downhole fluid analysis - Google Patents
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- CN101498215A CN101498215A CNA2008100086365A CN200810008636A CN101498215A CN 101498215 A CN101498215 A CN 101498215A CN A2008100086365 A CNA2008100086365 A CN A2008100086365A CN 200810008636 A CN200810008636 A CN 200810008636A CN 101498215 A CN101498215 A CN 101498215A
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Abstract
The operation, the analysis and the explanation of a chromatogram system can be obviously reinforced by coupling the chromatogram system with property measurement of one or a plurality of fluids. The property measurement of fluids provides fluid kinds, the existence of any pollutant, the estimation of hydrocarbon composition (C1, C2-C5 and C6+), the ratio of gas and oil, and the primary indication of color and/or fluorescent measurement. The other measurement used for the primary stage can include the measurement of density, viscosity and phase change. The measurement can be used for reinforcing the sampling regulation and the analysis regulation of GC in real time, and simultaneously improving the stability of chromatogram explanation.
Description
Technical field
The present invention relates to formation fluid (formation fluid) analysis, more specifically, the system and method that relates to the chromatography downhole fluid of enhancing, it utilizes the initial token of the character of described fluid, further analyze afterwards, described downhole fluid is wellbore fluid for example, handling of fluids, formation fluid and drilling mud.
Background technology
Chromatography is the technology that is generally used for characterizing the hydrocarbon of underground generation in the equipment based on ground.It comprises for example above hydrocarbon compound of C36+ for the long chain hydrocarbon compound, and high-resolution composition analysis is provided.These technology can be used for the composition model simulation of fluid in state equation adjustment and the oil reservoirs subsequently, to promote or to provide the oil reservoirs production strategy and based on the plan and the design of the production equipment on ground.
In laboratory, typically, stratum (formation) hydrocarbon samples is flashed to ambient conditions, with the gas and the liquid hydrocarbon phase of separate dissolved based on ground.With the moisture of any liquid hydrocarbon (oil) that may be present in collection in mutually from.Not only the injection of oil-water mixing may be interfered quantitative hydrocarbon analysis, and also may cause fixing degeneration fast mutually in the chromatographic column with the water contact.The standard analysis rules comprise post type and structure, temperature program(me), and flow rate of carrier gas and pressure, syringe and detector temperature are used to characterize.Can be with the analysis of one or more chromatographic systems and rules hydrocarbon phase cut for gases and liquids, so that resolution ratio and accuracy maximization.The canonical analysis time of this standardized technique is in the scope of a few minutes to one hour.
In order to obtain formation fluid, use the formation tester instrument that has sampling probe, pump assembly and flow line usually.Typically, sampling probe contact stratum and pump are used for fluid is drawn into flow line from the stratum, and flow line may contain the one or more sensor linkages (train) that are useful on local analysis.Subsequently, can or handle in the well or be collected in the analysis that is used in the sample bottle further based on ground fluid.Fluid can be a multiphase mixture single-phase or water and gas/liquid hydrocarbon.The initial fluid that is drawn in the instrument is normally highly polluted by the drilling well F.This filtrate can be (miscible with the stratum hydrocarbon) of water-Ji's (with stratum hydrocarbon unmixing) or oil-base.By the long-time continuous pumping, pollution descends and fluid becomes is the representative of real formation fluid more.
Pilkington (Pilkington) is at United States Patent (USP) 4,739, discloses a kind of method and apparatus that uses chromatographic system single-phase flow to be carried out the down-hole chromatogram in 654.In the technology of Pilkington, use resistivity sensor to discern not by the highly polluted hydrocarbon samples of the F of oil base.Yet Pilkington is failed to state and is used alternative sensor such as optical pickocff to follow the tracks of the mud contamination thing of oil base.In addition, Pilkington fails to point out the difference between formation water (or water base F) and the oil.
If only use chromatographic analysis system in subsurface environment, sampling will be blindly, not have the knowledge of the priori of type of fluid, and described type of fluid is water, gas and/or liquid hydrocarbon or pollutant for example.The sampling of water and the injection in chromatographic system should be avoided, and be irrelevant because the pressure-volume-temperature (PVT) of itself and hydrocarbon characterizes.The contact water may cause post fixedly phase quick degeneration and/or disturb quantitative hydrocarbon analysis.Blindly another problem of sampling is, when hydrocarbon fluid was the mixture of gas phase and liquid phase, it was quantitatively accurate to obtain then to be difficult in representational cut these two phases all be taken a sample.In order to keep the integrality of analysis, would rather two-phase be taken a sample respectively and obtain their composition independently by single-phase injection.
In addition, importantly know the percentage of pollution, particularly when sample contained the F of mixable oil-base, because the character of highly polluted rapid change formation fluid, therefore the composition analysis of such sample was not worth.Acceptable level of pollution in the formation fluid sample is: for the F of oil-base, about below 5%.Under the situation of the F of water-Ji, separate hydrocarbons is important before analyzing.Therefore, advantageously only when level of pollution is lower than acceptable level, carry out fluid properties and characterize and chromatography, to obtain being used for the result of state equation (EOS) adjustment and estimating of fluid character.Although chromatography is generally used for estimating to pollute in the ground experiment chamber, it is invalid polluting with tracking by the long-time repeated sampling of chromatography under conditions down-hole.This has not only increased the limited resources on the downhole tool such as the consumption of carrier gas, but also causes the decline of chromatographic performance.Most of posts readjust behind certain frequency injection.Follow the tracks of if can adopt more efficient methods to be used for polluting, then advantageously only use chromatography to be used for sample analysis.
Well typically runs through several stratum, and described stratum is filled with the fluid of the various kinds from the dry gas to heavy oil.Therefore, downhole tool should preferably can be analyzed various fluids in single well logging running.Under the situation of the priori that does not have the hydrocarbon samples kind, will have to adopt for example standard schedule, and not consider whether it is the dry gas that component mainly arrives C7, or component is until the dirty oil of C36 and Geng Gao.Therefore kind is adjusted and is optimized to improve resolution ratio and accuracy per sample.This may also cause unnecessary longer analysis time.High latency at analysis station not only causes the higher cost relevant with drilling time, and has increased the risk that instrument blocks in well.Also mean the product of increasing consumption such as carrier gas longer analysis time, running stores are the important consideration in subsurface environment, because only there is limited supply.
One aspect of the present invention is in the prior art these defectives.
Summary of the invention
According to some aspects, the present invention relates to a kind of analytical system, this analytical system comprises first platform and second characterization platform, the indication that first platform is configured to receive at least a portion analyte and at least a character of this fluid is provided, second characterization platform are configured to receive at least partially layer fluid and comprise at least a chromatography linkage.The term of Shi Yonging " chromatography linkage ", " analysis linkage " or " linkage " can comprise one or more sampler/syringes, one or more pillar and one or more detector herein, and their fluids link to each other so that the relevant characterization from the eluent of described one or more pillars to be provided.In addition, for clear, the term of Shi Yonging " analyte " is meant the fluid sample of analyzing herein.According to the present invention, analyte can be single-phase or heterogeneous, and can comprise liquid hydrocarbon phase, water or gas hydrocarbon phase.
According to one or more aspects, the present invention relates to a kind of method that characterizes analyte.This method can comprise one or more following behaviors: at least a first character of determining analyte in first characterization platform, based on described at least a first character, in second characterization platform, determine the composition of at least a portion analyte at least in part.
Description of drawings
In the accompanying drawing, Fig. 1 illustrates flow chart according to one or more embodiments of the present invention;
Fig. 2 shows the figure of the optical density of various oil as the function of wavelength;
Fig. 3 is the figure that shows the absorption spectrum of oil samples and water sample;
Fig. 4 is the figure that shows the pollution prediction of oil samples, and the fresh fluid analyser (Live Fluid Analyzer) on formation tester is used in described pollution prediction;
Fig. 5 is that diagram detects the heterogeneous figure that pumps the assembly downstream, and the composition fluid analyzer (Composition Fluid Analyzer) on the formation tester is used in described detection; With
Fig. 6 is the figure that shows from the downhole fluid analysis log of oil band, and the composition fluid analyzer on the formation tester is used in described analysis.
Specific embodiments
The invention provides the down-hole, on the spot, the formation fluid system and the technology that characterize.Aspects more of the present invention provide the system and the technology of the chromatogram sign that promotes formation fluid.Promote the sign of this formation fluid in subsurface environment to comprise: the initial at least a or multiple character of layer fluid definitely, form as optical signature, type of fluid, fluid density, fluid color, fluid fluorescence GOR rate and low resolution.Therefore, aspects more of the present invention relate to graduate or characterization system stage by stage and technology, and wherein first analytical procedure or platform can be utilized to characterize the characteristic of formation fluid with one or more more analysis platforms.First characterization platform can comprise nondestructive platform, comprises, for example, measures the technology of the intrinsic property of analyzed fluid.Fluid can be a formation fluid, and intrinsic property can be at least a fluid properties of formation fluid component.Those skilled in the art will appreciate that multiple alternative fluid can be used for implementing the present invention.In addition, for illustration purpose, the present invention will be described for the fluid that runs in subsurface environment, and this fluid is called " formation fluid " in this article.Such explanation is not intended to limit scope, because as skilled in the art to understand, the present invention can implement on multiple alternative fluid.First or the initial token function can promote or the sign of layer fluid post, perhaps promote at least or the sign of the part in the layer fluid post.Yet, if, for example in bypass mechanism, carry out first platform and characterize, also can utilize first platform of the destructiveness sign of carrying out sample segment that initial token is provided.
More features of the present invention relate to downhole analysis, and described downhole analysis comprises fast and effective the sign, realizes required chromatographic isolation simultaneously.For example, the present invention can allow to select best chromatographic isolation rules based on the knowledge of type of fluid.Yet, under the situation of the priori that does not have fluid, will use single rules to guarantee suitable sign.The rules that this may unnecessarily prolong analytical cycle or need unnecessary complexity.For example, if sample mainly comprises dry gas, will adopt unnecessary long analysis time and temperature heating oblique line to rise to reach the high column temperature of main component with non-existent more high carbon atom number as target.This also may cause system carrying out next longer cool time before analyzing.
Be used for the gas-chromatography output that EOS adjusts in order to use, the quality of all components or molar fraction should be known in the sample fluid.In laboratory based on ground, in the chromatogram quantification of molar fraction or mass fraction need to be present in the sample but not component in chromatogram output describe.This may be because: (i) they are crossed to be adsorbed on doughtily and fixing go up mutually, and in analysis time wash-out never, (ii) never in sampler/syringe, evaporate because of the low volatility under the temperature and pressure condition that adopts, therefore there is not the part of the sample plug (sample plug) of evaporation to be expelled in the pillar, perhaps (iii) they are recoiled, thereby do not pass through detector.In analysis,,, these components are described usually as in the method described in ASTMD5307-97 and the D5442-93 by using interior mark (with the ratio of accurate measurement and the particular components of sample mix) based on ground.Yet mark and hydrocarbon samples may be complicated in very accurately mixing in the gas-chromatography instrument of down-hole.
Aspects more of the present invention can comprise downhole tool or system, and it comprises one or more initial token system, subsystem or parts, and they provide the initial value and the characteristic of fluid.The present invention is advantageously integrated chromatographic system and technology and other sensor and/or rules as based on those of optical technology, resistivity, NMR, and/or provide the measured value of intrinsic property, as density and/or viscosity.
Fig. 1 has exemplarily illustrated one embodiment of the invention.The subsystem of optics-Ji can be determined the existence of any water in the analyte or gas or liquid (oil) hydrocarbon phase at first.Therefore, the existence of water, oil and/or gas or do not exist can characterize initial token in the step 112 first.In some cases, more embodiment can provide at least about the estimation for the ratio of oil (GOR) of any dissolved gas of analyte.Some more aspects can comprise that at least a portion of analyte or the color and the fluorescence of component characterize, and described analyte can be further used in one or more sign linkages subsequently or that follow.For example, can determine the color and/or the fluorescence of liquid hydrocarbon phase, and initial or first character of determining can provide the qualitative estimation of the characteristic of for example light or heavy-hydrocarbon oil of oil.Can be for example with the composition analysis that as seen be used to carry out low resolution to the absorption spectrum of near infrared region, C1, C2-C5 or C6+, and the mud contamination of any oil base, as described in the following document: Andrews etc., " use the pollution quantitative (QuantifyingContamination Using Color of Crude and Condensate) of the color of crude oil and condensate ", oil field comment (OilfieldReview), autumn calendar year 2001, the 24-43 page or leaf, with Betancourt etc., " analyze the hydrocarbon (Analyzing Hyrdocarbons in the Borehole) in the boring ", oil field comment (Oilfield Review), autumn in 2003, the 54-61 page or leaf, they have described these optical measurement in further detail.If suitable, can estimate more the sign in step 122.That if sample is considered to pollute or be considered to mainly form by undesirable component, then no longer consider further to characterize, and be recoverable to another sample, 122, not.In addition, fuzzy and/or if initial or first characterization result is uncertain invalid aspect other, then be recoverable to another sample.For illustration purpose, this is illustrated in the step 106, yet, those skilled in the art will recognize that the withdrawal of another sample can occur in multiple alternative platform, is included in step 112 or 122.For example, if the analyte of regaining mainly is made up of non--hydrocarbon component, then can abandons sample, and will further not characterize.If effectively sample value gets further and estimates, 122, be, then one or more second characterize in the steps 142 sample transferred to second or subsequently analysis in.In some cases, can to small part based on first characterization result, determine that second characterizes one or more optional steps of one or more parameters of step 132, for example, in one or more chromatogram linkages.But can comprising combination first and second results 152, explains selection operation in addition to provide about the enhancing of analyte quality, feature and/or characteristic.
In some embodiments of the present invention, can utilize by the color harmony intensity of the light of sample transmission or reflection and distinguish the different oil of forming.Can use the light of absorption or the sign that optical density (OD) provides component, OD can be the ratio of incident light and transmitted light, and fluid is dark more, and OD is high more.For example, the colourless typically and light that do not absorb visible spectrum of light hydrocarbon, and condensate can be the clarification or slightly have little red-pale brown look, because they absorb blue light, and the heavy crude with complicated molecule typically is burgundy, because all be absorbed at the light of whole visible spectrum.Therefore, in some embodiments of the present invention, first characterization platform comprises the initial token of measuring light density with sampling.In some cases, the feature of being considered can be the existence of one or more fluid phases.Can also be with the instrument of optical system base such as the fresh fluid analyser (LFA of shura Mu Baige (Schlumberger)
TM) and form fluid analyzer or CFA
TMBe used to detect single-phase and multiphase flow, and further provide about suitable sampling condition or whether should further analyze the indication of the sample of withdrawal.In the more embodiment of the present invention, the system of optics base and measure the resistivity of fluid for example or electrical conductivity those and utilize nuclear magnetic resonance (NMR) those also can be used for first characterization platform.
The particularly advantageous embodiment of the present invention can adopt the spectral measurement of sample that initial characteristics or multiple initial characteristics are provided.Under some special situations, can catch spectral signal, and the special constituent of spectrum from sample, for example, and at the light of selective wavelength, the indication of the required and/or undesirable component in can sampling or do not exist.Fig. 2 and 3 is (based on Andrew (Andrews) etc., " use the pollution quantitative (QuantifyingContamination Using Color of Crude and Condensate) of the color of crude oil and condensate ", comment in the oil field, autumn calendar year 2001, contained data in the 24-43 page or leaf), exemplarily shown the graph of a relation between optical density and the light wavelength.As shown in Figure 3, water typically absorbs the light of near-infrared wavelength, and promptly about 1445 and the light of 1930 nanometers.Therefore, can adopt optical technology, by catch/response of observation sample or characteristic properties consider existing and/or non-existent indication of things so that one or more targets to be provided, determine the existence of water in the sample.
In one embodiment of the invention, optical system can comprise at least a light source such as light emitting diode, and described light emitting diode (LED) light typically is coupled at least a refractometer by window, and described window can be a sapphire window.Window is set to against the flow line that accommodates the fluid that is characterized typically or becomes its a part of sapphire window.Refractometer utilizes the reverberation of window quantitatively to identify fluid phase in the oil pipeline.In the angle of incidence of selecting, the reflectance factor of the reflectance factor when gas contacts with window during much larger than oil or water contact window.In more embodiment, optical system can further comprise the detector module of the absorption feature of secondary light source and definite fluid.One or more wideband light sources such as high temperature halogen tungsten filament lamp can pass through fluid with wide spectral light transmission.The distribution of measurement transmitted light in whole visible and near infrared spectrum.Can use a plurality of passages to carry out the light that selectivity is determined, observed or quantize a plurality of wave-length coverages of spectrum.Sign from the relative quantity of respective components in the measurement sampling of each passage.
In addition, can distinguish fume such as mud solid, because the existence of this pollutant typically confirms as the noise in the OD measurement.For example, Fig. 4 has shown and can be used in the optical means to follow the tracks of the figure from the pollutant in the formation fluid of mud (OBM) filtrate of oil-base.Can be used in real time fresh fluid analyser or LFA available from shura Mu Baige
TM, it is substantially waited by Andrew and is described in oil field comment (Oilfield Review), 24-43 page or leaf, autumn calendar year 2001.OBM filtrate is colourless and does not have the methane of dissolving.Along with continuous sucking and pollutant descend in the fluid of sampling, the mark of the formation fluid in the sample increases.This increase by the optical density in color and the methane wavelength channel is confirmed, and described optical density increases and stablizes along with polluting stable.In the sample instance shown in this figure, Color Channel data prediction about 4.9% pollutes, and the methane passage predicts that about 6.2% pollutes.Average 5.5% is consistent with 4.3% pollution of being determined by the GC analysis of in vitro collection sample.
Fig. 5 (examines spy (Betancourt) etc. based on beta, the data that comprise among the SPE 87011, the meeting of SPE Asia-Pacific, Malaysian Kuala Lumpur, in March, 2004)) show, can carry out optical measurement with the composition fluid analyzer that pumps the assembly downstream that is arranged in the formation tester instrument.Pump assembly and cause the Gravity Separation of gas, oil and water.During the optical pickocff of the optical signalling that comes autofluorescence and absorptiometry in oil-water-gas slug (slug) is flowed through flow line, draw their aspect graph.This first is characterized in that to avoid water sampling and select to be used for to use second representative single phase and the gaseous sample of analyzing of chromatogram linkage be potential important the preceding.
Therefore, aspect more of the present invention, the efficient of down-hole chromatographic system and technology can be enhanced or improve the Real-Time Evaluation of when taking a sample by being convenient to.For example, first of the optics base sign subsystem can guarantee only to carry out gas-chromatography (GC) analysis when not having water to exist.In the hydrocarbon-current of many mixing, the pump assembly serves as the down-hole eliminator and produces the slug of water and hydrocarbon.Use first characterization tool can in sampling, use, to catch the hydrocarbon slug as instructing.This will guarantee the measurement of being correlated with and prevent infringement to the pillar of water sensitive.Similarly separation can take place when having oil/air-flow.Therefore, for example, first system of optics-Ji can be used for instructing sampling opportunity to regain oil samples, regains gaseous sample then in next running.
Chromatogram linkage of the present invention typically comprises one or more sampler/syringes, one or more pillars and one or more detector, and their fluids link to each other so that the relevant characterization from the eluent of one or more pillars to be provided.Typically, detector can be for example flame ionization detector or thermal conductivity detector (TCD), and pillar accommodates fixedly phase, for example, one or more components of analyte is shown gel or other suitable material of affinity.
In one or more embodiment preferred, the system of optics-Ji can promote to determine the best GC sampling period fast and/or continuously based on pollution.For example, typically only enough low at pollutant, promptly sample analysis has the time spent just to regain sample.Pollute although GC can be used for following the tracks of, the quantity that the preferred GC of minimizing analyzes is because GC analyzes the longer time of analytical technology that typically spends ratio such as optics-Ji.On the contrary, first of optics-Ji analyzes and can monitor pollution continuously, and pollutes when enough hanging down thinking, for example the GC of sample analyzes when suitable, triggers other sign.Avoid or reduce the dependence that the chromatogram of pollute following the tracks of characterizes, can the minimizing instrument spend in the time at fluid sampling station, because GC analyzes typically cost than longer time of optical analysis on the spot in well.This has reduced the risk that instrument blocks.Selectivity is taken a sample or will be polluted the other benefit of classifying and is before chromatogram characterizes, and can reduce the consumption of carrier phase.Therefore, in some embodiments, can utilize littler holonomic system, because reduced the operation requirement of carrying out similarly quantitative and/or qualitative analysis.In addition, the degeneration of post is minimized, and makes the representative sample analysis that can carry out more heterogeneous pass before pillar need readjust.
Methane and carbon dioxide often can co-elutes.Optical characterisation methane component molar fraction allows to determine by the following method the relative quantity of carbon dioxide, for example, and by the combination methane of the measurement of determining by chromatography and the methane contribution that carbon dioxide comes compensated measurement.Therefore, embodiments more of the present invention can be avoided chromatographic process, and these chromatographic processes typically are used for separation of methane and carbon dioxide, are the methods that typically has longer analysis time.Therefore, aspects more of the present invention belong to the combination of chromatography and optical analysis system with better quantitatively and explain.Adopt CFA
TMOptical analysis provide C1, C2-C5 and C6+, and these outputs can be used for checking the uniformity of measuring with GC.If marked difference is arranged, then detect it in real time and allow the chance of duplicate measurements.
A feature more of the present invention can belong to utilizes the first fluid property information to improve or even optimization chromatography.For example, characterization system or instrument can comprise the analysis rules of one or more storages, and it for example comprises, temperature program(me), flow rate of carrier gas, and/or pressure time table.According to the kind of hydrocarbon, dry gas for example, light oil, heavy oil etc. can use various rules, typically select best in real time and/or preferably analyze rules, to improve resolution ratio and rapid analysis is provided.
In some embodiments of the present invention, can under conditions down-hole, determine the density and/or the viscosity of analyte, for example use vibrating sensor, as those disclosed in WO2002077613 and WO2006094694, so that initial token to be provided.Can use viscosity information to obtain about hydrocarbon kind, light or qualitative information heavily.Can use density information to come to quantize more cursorily chromatogram.
As explaining before this, because the incomplete gasification in sample/injecting unit or in fixing strong absorption of going up mutually etc., not all sample component all can be eluted in the chromatogram.Mark in present laboratory method is used is as described in ASTM D5307-97 and the D5442-93, with the quality of determining that it is lost in chromatogram.This mark is called additional mark, and with the quality information of all other components, can provide total fluid to form.Then, this information can be used for adopting the relation between EOS estimated pressure, volume and the temperature.Typically, use the accurate and detailed composition and the fluid properties such as the bubble point of measurement, dew point, with the blend mutually of other component, compressibility, density etc., the characteristic constant of adjustment state equation (referring to, A Mode (Ahmed) etc., SPE 15673).Under conditions down-hole, mark and fluid sample prepare quantitative mixture in being difficult to adopt.Usually, by using for example accurate sample loop, will allow the chromatogram sampler under down-hole pressure and temperature, to extract the fluid of precise volumes.Nearest publication as WO2002077613 and WO2006094694, discloses the vibrating device of high-acruracy survey density under conditions down-hole.Use density and the volume measured, can calculate the gross mass of the sample that is used for chromatography.The peak area of the component of wash-out can be used for obtaining the quality of every kind of elution fraction in the chromatogram.Difference between total eluted mass and the input quality is a missing mass.This makes the mass fraction of the component can determine wash-out and total composition of additional mark and fluid, then can be as the input information of EOS model.
The fluid sensor that is used for underground survey that system of the present invention and technology expectation utilization are other, for example as (Lo etc., SPE 77264, SPE periodical (SPE Journal), in March, 2002,24-34 page or leaf) disclosed NMR in is used to measure hydrocarbon fluid viscosity and GOR rate.Can use resistivity sensor between water and hydrocarbon fluid, to distinguish.Measure fluid phase change character such as bubble point, dew point, (appearance) temperature appears in wax, other sensor of asphalitine initiation pressure (asphaltene onset pressure) also can provide the information that can combine with the downhole gas analysis of hplc, thereby further promote down-hole EOS to adjust, and allow the real-time consistency of all measuring transducers is confirmed.
Fig. 6 has shown that from the down-hole pressure of oil well and fluid analysis log the composition fluid analyzer on formation tester is used in described analysis.These fluid analysis logs are based on from Fujisawa etc., the data of SPE 89704, SPE ATCE, Houston, Texas, in September, 2004).The pressure detection well curve has clearly illustrated the existence of the gas in the stratum, oil and water band.The big composition that has shown hydrocarbon at the fluid log of 5 sample houses changes, as at C1, C2-C5 and C6+ mark and visible in the GOR that the right side is represented with m3/m3.This variation is confirmed by laboratory measurement subsequently.The fluid of standing above (xx68.2m) with high GOR is interpreted as being in the pneumatic jack zone, and is the retrograde gas condensate with C6+ of light colour and about 34 weight %.Below station (xy06.3m) be confirmed as containing the heavier dirty oil of polyaromatic compound and about 72 weight % C6+.Therefore, if carry out chromatography in this well, then same system must be analyzed simultaneously at the gaseous sample of the shallow degree of depth of about xx68.2m and at the heavier dirty oil of the degree of depth of about xy06.3m.Typical chromatogram rules start from low temperature so that enough resolution ratio to be provided in lighter component, the temperature oblique line is risen with the heavier component of wash-out.Can adopt to regulate and circulate (conditioning cycle) and/or recoil analysis is carried through to the end, to remove the not component of wash-out.With separate and analyze heavier oil phase ratio, the chromatographic isolation of gaseous sample and analyze can be in the short time and with lower maximum temperature realization, with the wash-out all components.The maximum temperature that is used for heavier oil by the rising of temperature oblique line is high more, will mean equally that the cool time before beginning analysis subsequently is long more.Also may have bigger missing mass by heavier oil, and require readjusting after analysis to circulate and/or recoil from pillar, to remove the component of any not wash-out.Existing knowledge from optical analysis helps to optimize the chromatogram rules, if the feasible priori that has about the hydrocarbon kind then can be used rules more fast for gaseous sample.Same attention, this priori will avoid chromatography to stand in the water band.
Although described illustrative embodiment more of the present invention, should it is evident that for those skilled in the art above-mentioned only is illustrative and nonrestrictive, only presents by way of example.Multiple change and other embodiment and are thought and are fallen within the scope of the present invention all in those of ordinary skills' scope.Particularly, although the many examples that present relate to the specific combination of method behavior or factor of system, should be appreciated that these behaviors can otherwise make up to realize identical purpose with these key elements herein.
It will be appreciated by those skilled in the art that parameter described herein and structure are exemplary, actual parameter and/or structure will depend on the concrete application of using system of the present invention and technology.Those skilled in the art it is also recognized that or can determine, only use normal experiment, are equivalent to particular embodiment of the present invention.Therefore, should be appreciated that embodiment described herein only presents by example, and in the scope of appended claim book and equivalent thereof; The present invention can implement in the mode beyond the specifically described mode.
And, it should also be understood that, the present invention relates to each feature described herein, system, subsystem or technology, if with such feature, system, subsystem and technology be not inharmonious mutually, any combination of feature described herein, system, subsystem or technology more than two, and any combination of two above features, system, subsystem and/or methods, in the scope of the invention that is considered in as claims, embody.In addition, only be associated and behavior, key element and the feature discussed are not intended to get rid of from the similar role of other embodiment with an embodiment.
The term of Shi Yonging " a plurality of " is meant plural clauses and subclauses or component herein.Term " comprises ", " comprising ", " having ", " having ", " containing " and " relating to ", no matter is in printed instructions or in claims etc., all is open term, that is, and and expression " including but not limited to ".Therefore, the use of this term means and comprises listed thereafter clauses and subclauses, and equivalent, and other clauses and subclauses.About claims, have only the transition phrase " by ... form " and " basically by ... form " just be respectively that seal or semi-enclosed transition phrase.The order term as uses in claims such as " first ", " second ", " the 3 " to change key element required for protection; not by self meaning that any priority, superiority or a claimed key element surpass another order or the chronological order that carries out the behavior of method; but only have the claimed key element of a certain title and mark with another key element (but being to use the order term) of same names as difference, to distinguish key element required for protection.
Claims (20)
1. analytical system, it comprises:
First platform, this platform are configured to the indication of at least a character that receives analyte and this analyte is provided; With
Second characterization platform, this platform are configured to receive at least a portion analyte and comprise at least a chromatography linkage.
2. the described analytical system of claim 1, wherein said first and second characterization platform are contained in the shell.
3. the described analytical system of claim 1, it also comprises controller, and this controller can be operatively connected, and is sent to described second characterization platform to receive from the signal of described first characterization platform and with at least a control signal.
4. the described analytical system of claim 1, wherein said first characterization platform comprises the detector based on optics, this detector is arranged to provide the indication of at least one in forming of the fluid of type of fluid, pollutant level and at least a portion analyte.
5. the analytical system of claim 1, wherein said first characterization platform comprises density sensor, this density sensor is arranged to provide at least one the indication in the density of at least a portion analyte.
6. the described analytical system of claim 1, wherein output signal is arranged to excite the valve of second characterization platform and at least one in the heater.
7. the described analytical system of claim 1, wherein said analyte is a formation fluid.
8. the described analytical system of claim 7, wherein said formation fluid is a heterogeneous fluid.
9. the described analytical system of claim 8, wherein said formation fluid contains water.
10. the described analytical system of claim 8, wherein said formation fluid contains the gas hydrocarbon phase.
11. the described analytical system of claim 8, wherein said formation fluid contains the liquid hydrocarbon phase.
12. a method that characterizes analyte, this method comprise one or more following behaviors:
At least a first character of analyte is provided in first characterization platform; With
Based on described at least a first character, in second characterization platform, determine the composition of at least a portion analyte at least in part.
13. the described method of claim 12, this method also are included in the behavior of determining the hydrocarbon content of at least a portion analyte in described first characterization platform.
14. the described method of claim 13, this method also comprise the behavior that based on the hydrocarbon content of measuring control signal is transferred to described second characterization platform to small part.
15. the described method of claim 12, the wherein said behavior of determining the composition of at least a portion analyte in second characterization platform comprises the behavior of the component of the described analyte of chromatographic isolation.
16. the described method of claim 15, this method also comprises the behavior of the component of the analyte that detects chromatographic isolation.
17. the described method of claim 15, the behavior of wherein said sign component comprise the behavior of the chromatogram of the composition component that produces the expression analyte.
18. the described method of claim 17, this method also comprise the behavior that described chromatogram is transferred to remote equipment by well.
19. the described method of claim 12, this method also comprise to small part based on measurement parameter from described first characterization platform, produce described second characterization platform first the cover operational factor behavior.
20. the described method of claim 12, wherein said analyte is a formation fluid.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102052076A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | System for monitoring components of shaft fluid of H2S/CO2-containing gas field and analysis method thereof |
| CN105301150A (en) * | 2015-12-09 | 2016-02-03 | 中国地质科学院水文地质环境地质研究所 | Field enrichment device for volatile organic compounds in underground water |
| CN109386282A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Bored under the conditions of a kind of oil emulsion drilling fluid meet oil reservoir sentence knowledge method |
| CN110056348A (en) * | 2019-04-25 | 2019-07-26 | 中国海洋石油集团有限公司 | A kind of method and system of measurement formation fluid composition and property |
| CN113640178A (en) * | 2021-08-10 | 2021-11-12 | 中海油田服务股份有限公司 | Stratum water type identification method, pollution rate determination method and computing equipment |
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| AU2002237277B2 (en) * | 2001-01-18 | 2007-06-07 | Shell Internationale Research Maatschappij B.V. | Measuring the in situ static formation temperature |
| CN1896459B (en) * | 2005-01-11 | 2013-06-12 | 施蓝姆伯格海外股份有限公司 | System and methods of deriving differential fluid properties of downhole fluids |
| CN1664575A (en) * | 2005-03-14 | 2005-09-07 | 辽河石油勘探局 | Method for monitoring petroleum reservoir performance by using biomarkers |
| US7458252B2 (en) * | 2005-04-29 | 2008-12-02 | Schlumberger Technology Corporation | Fluid analysis method and apparatus |
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| CN102052076A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | System for monitoring components of shaft fluid of H2S/CO2-containing gas field and analysis method thereof |
| CN102052076B (en) * | 2009-10-30 | 2014-04-02 | 中国石油化工股份有限公司 | System for monitoring components of shaft fluid of H2S/CO2-containing gas field and analysis method thereof |
| CN105301150A (en) * | 2015-12-09 | 2016-02-03 | 中国地质科学院水文地质环境地质研究所 | Field enrichment device for volatile organic compounds in underground water |
| CN105301150B (en) * | 2015-12-09 | 2017-03-08 | 中国地质科学院水文地质环境地质研究所 | Volatile organic contaminant field enriching apparatus in a kind of subsoil water |
| CN109386282A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Bored under the conditions of a kind of oil emulsion drilling fluid meet oil reservoir sentence knowledge method |
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| CN110056348B (en) * | 2019-04-25 | 2021-05-11 | 中国海洋石油集团有限公司 | Method and system for determining formation fluid composition and properties |
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