CN106526138A - Elemental geochemical method for hydrocarbon source correlation - Google Patents
Elemental geochemical method for hydrocarbon source correlation Download PDFInfo
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- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 70
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 70
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 150
- 238000013210 evaluation model Methods 0.000 claims abstract description 17
- 239000010426 asphalt Substances 0.000 claims description 95
- 238000010438 heat treatment Methods 0.000 claims description 37
- 238000004458 analytical method Methods 0.000 claims description 25
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 19
- 229910017604 nitric acid Inorganic materials 0.000 claims description 17
- 239000003049 inorganic solvent Substances 0.000 claims description 14
- 229910001867 inorganic solvent Inorganic materials 0.000 claims description 13
- 239000000470 constituent Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 235000010755 mineral Nutrition 0.000 claims description 7
- 239000011573 trace mineral Substances 0.000 claims description 7
- 235000013619 trace mineral Nutrition 0.000 claims description 7
- 239000011785 micronutrient Substances 0.000 claims description 6
- 235000013369 micronutrients Nutrition 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 162
- 150000003839 salts Chemical class 0.000 description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 239000010948 rhodium Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- -1 oil Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000000090 biomarker Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention provides an elemental geochemical method for hydrocarbon source correlation. The method includes the following steps that 1, a source rock sample and a reservoir pitch sample are collected, and detection results of inorganic element geochemical components in the source rock sample and the reservoir pitch sample are obtained; 2, according to the detection result of the inorganic element geochemical components in the source rock sample, an evaluation model is set up for the source rock sample; 3, the detection result of the inorganic element geochemical components in the reservoir pitch sample and the evaluation model set up according to the source rock sample are compared to obtain the hydrocarbon source of the reservoir pitch sample; 4, the hydrocarbon source of the reservoir pitch sample is judged. The method provides a reference for ancient oil and gas reservoir system research.
Description
Technical field
This technology is related to oil-gas geology geochemical investigation field, and in particular to a kind of element earth for the contrast of hydrocarbon source
Chemical method.
Background technology
The contrast of hydrocarbon source is the important content in current Petroleum System research, its objective is to find out the hydrocarbon source source of oil gas,
To study the mineralizing evolution process of petroleum system, reference frame is provided with exploration for oil-gas geology research.
The contrast of organic matter hydrocarbon source refers to hydrocarbon (such as oil, the gas and reservoir bitumen etc.) sibship and source (hydrocarbon source rock) between
Contrast, main purpose are to determine which set hydrocarbon source rock the oil gas assembled comes from, so as to find out Hydrocarbon Migration And Accumulation process, and then
Prediction hydrocarbon source stove and satellite oil-gas reservoir position.This is a key issue for working out oil-gas exploration and development scheme, thus has weight
The theory significance wanted and using value, have put into continual research for a long time and have achieved great achievement.
Research shows that a preferable hydrocarbon source contrasts index, should meet several primary conditions:Anticipate with clear and definite source of students
Justice, it is few to receive or do not affected by maturing, and it is few receive or do not receive secondary change (as air-fuel mixture, washing, biodegradation and
Matter chromatographic effect) affect etc..In this respect, it is under the jurisdiction of the biomarker of organic (oil gas) geochemical field research,
Particularly terpenoid compound, has played great function.However, oil gas is after into high evolution stage, crude oil, reservoir bitumen and
Conventional biomarker (the including paraffinic and steroid terpane class etc.) composition characteristic of hydrocarbon source rock reaches unanimity, organic matter remnants'
Useful information is less, loses the meaning for indicating original source of students feature, it is difficult to for fine OIL SOURCE CORRELATION, thus can not be effective
Carry out the contrast of hydrocarbon source.
The content of the invention
It is an object of the invention to provide a kind of element geochemistry method for the contrast of hydrocarbon source, mainly by the element earth
Chemical technology is applied in organic matter analysis, provides reference frame for (Gu) oil-gas reservoir systematic study.
The present invention to achieve these goals, establishes a kind of element geochemistry method for the contrast of hydrocarbon source, including
Following steps:
Step one, collection source rock sample and reservoir bitumen sample, and source rock sample and reservoir bitumen sample are obtained respectively
The inorganic elementss geochemical constituent testing result of product;
Step 2, according to the inorganic elementss geochemical constituent testing result of the source rock sample of gained, to hydrocarbon source rock sample
Product set up evaluation model;
Step 3, according to the inorganic elementss geochemical constituent testing result of reservoir bitumen sample and according to source rock sample
The evaluation model of foundation carries out contrasting the hydrocarbon source for obtaining reservoir bitumen sample source;
Step 4, judges the hydrocarbon source source of reservoir bitumen.
In one embodiment, in step one, inorganic elementss geochemical constituent testing result include trace element and
The content of rare earth element.
In one embodiment, in step one, after the source rock sample to gathering is washed and is ground, then to hydrocarbon source
Rock sample product carry out heating for multiple times, wherein, need HF is added in source rock sample before heating for the first time, need before heating for second to
Inorganic solvent combination, preferred HF and HNO are added in source rock sample3Combination or HF and HClO4One kind in combination;And it is last
Inner mark solution and mineral acid, preferred Rh (rhodium) inner mark solutions and HNO are added before once heating3.It is further preferred that at second
Heating is front to add HF and HNO in source rock sample3Combination, also, source rock sample and HF and HNO3Mass volume ratio be
1g:(5-15)ml:(50-70) ml, it is further preferred that source rock sample and HF and HNO3Mass volume ratio be 1g:(8-
12)ml:(55-65)ml。
In one embodiment, in step one, after the reservoir bitumen sample to gathering is washed and is ground, then to storage
Layer asphalt sample carries out heating for multiple times, wherein, need inorganic solvent combination is added in reservoir bitumen sample before heating for the first time,
It is preferred that HF and HNO3Combination or HF and HClO4One kind in combination;And last time adds inner mark solution and inorganic before heating
Acid, preferred Rh inner mark solutions and HNO3。
In one embodiment, in step one, to the heating for the first time of reservoir bitumen sample using baking oven mode, baking oven adds
The temperature of heat is 160-210 DEG C, and the time of baking oven for heating is 6-24 hours.Preferably, the heating-up temperature of baking oven is 175-195
DEG C, heat time heating time is 10-14 hours.
Preferably, in step one, the front addition HF and HNO in reservoir bitumen sample is heated for the first time3, and reservoir drip
Blue or green sample and HF and HNO3Mass volume ratio be 1g:(3-10)ml:(90-110) ml, preferred 1g:(5-8)ml:(95-105)
ml。
In one embodiment, in step 2, using the average shale standard of Australian post-Archean with component, cluster
At least one in analysis and canonical parameter sets up source rock sample evaluation model.
In one embodiment, in step 2, set up with component using the average shale standard of Australian post-Archean
During source rock sample evaluation model, including:Australia is done to micronutrient levelss in source rock sample or rare earth element content
The average shale standard of post-Archean matches somebody with somebody component, the average shale standard of Australian post-Archean of the source rock sample of same layer position
A class is classified as with component, the Australian post-Archean of such source rock sample average shale standard is matched somebody with somebody component as the layer
The source rock sample evaluation model of position, in step 3, to micronutrient levelss in reservoir bitumen sample or rare earth element content
The average shale standard of Australian post-Archean is done with component, is originated with the hydrocarbon source for analyzing reservoir bitumen sample.
In one embodiment, in step 2, using during cluster analyses, including:Same layer position source rock sample is returned
For a class, according to micronutrient levelss in such source rock sample or rare earth element content, Q type cluster analyses are carried out, and is obtained
Cluster analyses dendrogram is obtained, in step 3, Q type cluster analyses is carried out to reservoir bitumen sample, to analyze reservoir bitumen sample
Hydrocarbon source source.
In one embodiment, in step 2, during using canonical parameter method, deposition ring is carried out including to source rock sample
Border parameter and thing source source parameter are calculated, and in step 3, depositional environment parameter and thing source source are carried out to reservoir bitumen sample
Parameter is calculated, and is originated with the hydrocarbon source for analyzing reservoir bitumen sample.
Compared with prior art, it is an advantage of the current invention that make use of the inorganic geochemistry component research oil gas of oil gas
The origin cause of formation, make use of stability of the inorganic component during Hydrocarbon formation and evolution, it is not easy to by Maturity and time change
The effects such as change, so as to provide reference frame for (Gu) oil-gas reservoir systematic study.
Description of the drawings
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing, in figure:
Figure 1A shows the PAAS figures of class source rock sample of the invention;
Figure 1B shows the PAAS figures of another kind of source rock sample of the invention;
Fig. 1 C show the PAAS figures of a reservoir bitumen sample of the invention;
Fig. 1 D show the PAAS figures of another reservoir bitumen sample of the invention;
Fig. 2A shows the Q type cluster analyses dendrograms of source rock sample of the invention;
Fig. 2 B show the Q type cluster analyses dendrograms of source rock sample of the invention-reservoir bitumen sample;
Accompanying drawing is not drawn according to actual ratio.
Specific embodiment
The present invention will be described further by specific embodiment below, it should be appreciated that the scope of the present invention is not
It is limited to this.In addition to it should be particularly mentioned that, what is used is reagent commonly used in the art, instrument and condition to the present invention.
The present invention relates to it is a kind of for hydrocarbon source contrast element geochemistry method, the method include gather source rock sample
With reservoir bitumen sample, and the content of the trace element tracking of source rock sample and reservoir bitumen sample is obtained.
Specifically, for source rock sample (for example, 5g), source rock sample is carried out using deionized water and organic solvent
Cleaning washing.Wherein, the organic solvent for cleaning includes at least one in dichloromethane, ethanol and acetone, preferred dichloro
Methane.Then, source rock sample is ground to into 150-250 mesh using mortar, preferred 180-230 mesh, such as 200 mesh are standby.
Weigh the source rock sample after grinding carries out molten sample process with inorganic solvent, and source rock sample is carried out repeatedly to add
Heat.Need HF (Fluohydric acid .) is added in source rock sample before heating for the first time.Need to source rock sample before heating for second
Middle addition inorganic solvent combination, inorganic solvent preferred HF and HNO3Combination or HF and HClO4One kind in combination, further preferably
HF and HNO3Combination.Wherein, the mass volume ratio of source rock sample and inorganic reagent is 1g:(5-15)ml:(50-70) ml, it is excellent
Select 1g:(8-12)ml:(55-65)ml.HF concentration about 38wt%, HNO in inorganic solvent3About 68wt%.The preferred Jing of inorganic solvent
Cross secondary sub-boiling distillation purification.
Heating for the first time is carried out to hydrocarbon source rock using electric hot plate mode of heating, temperature is 100-140 DEG C, preferable temperature is
110-130 DEG C, for example with 120 DEG C, steam to wet salt shape.Second heating is heated to source rock sample using baking oven, is dried
The temperature of case heating is 160-210 DEG C, preferred 175-195 DEG C, and time of baking oven for heating is 6-24 hours, preferred 10-14 hours.
For example, source rock sample is heated 12 hours under the conditions of oven temperature is for 185 DEG C.
After the completion of heating to source rock sample second, heating for multiple times can also be carried out using electric hot plate to which and be steamed to wet
Salt shape, to remove unnecessary HF.Wherein, the temperature of electric hot plate heating could be arranged to 100-200 DEG C, preferred 150-170 DEG C, example
Such as, heating-up temperature can be adopted for 160 DEG C.
Inner mark solution and mineral acid are added in most backward source rock sample, carries out heating molten sample.It is preferred that, the molten sample of internal standard is
The Rh solution of 500ng/mL, mineral acid is HNO3。
In a specific embodiment, take 0.0500g source rock samples and be put in the TEFLON cups of 10mL;Add
1.5mL HF, are placed on electric hot plate and steam to wet salt shape in 120 DEG C;Add 0.5mLHF and 3mLHNO3Seal, and load not
Rust steel sleeve in, in an oven at 185 DEG C dry 12 hours, after cooling on electric hot plate 160 DEG C steam to wet salt shape;Add
1mL HNO3, and on electric hot plate 160 DEG C steam to wet salt shape, this " add 1mL HNO3, and on electric hot plate 160 DEG C steam to wet
Salt shape " step can repeat, for example, repeat three times to remove unnecessary HF;Add the Rh internal standards of 1mL500ng/mL molten
Liquid, adds 2mLHNO3With 3mL water, seal, heat 5 hours in 140 DEG C in being put into baking oven;50mL is transferred to after cooling
In centrifuge tube, 50mL is diluted to.
For reservoir bitumen sample, reservoir bitumen is extracted in by reservoir rock, as after reservoir bitumen sample, to use
Deionized water and organic solvent are washed and are dried, with standby.Wherein, for cleaning organic solvent include dichloromethane,
At least one in ethanol and acetone, preferred alcohol.Using mortar grinder reservoir bitumen sample to less than or equal to 0.5mm sizes
Grain, it is preferable that less than or equal to 0.2mm, with standby.
Reservoir bitumen sample after grinding inorganic solvent carries out molten sample process, and reservoir bitumen sample is carried out repeatedly to add
Heat.Before first time heats, inorganic solvent combination, inorganic solvent preferred HF and HNO are added in reservoir bitumen sample3Combination or
HF and HClO4One kind in combination, further preferred HF and HNO3Combination.Wherein, the quality of reservoir bitumen sample and inorganic reagent
Volume ratio is 1g:(3-10)ml:(90-110) ml, preferred 1g:(5-8)ml:(95-105)ml.And HF concentration in inorganic solvent
About 38wt%, HNO3About 68wt%, inorganic solvent are purified preferably through secondary sub-boiling distillation.Reservoir is dripped using baking oven for the first time
Blue or green sample is heated, and the temperature of baking oven for heating is 160-210 DEG C, preferred 175-195 DEG C, such as 185 DEG C, baking oven for heating when
Between be 6-24 hours, preferred 10-14 hours, such as 12 hours.
After the completion of heating for the first time to reservoir bitumen sample, can also using electric hot plate which is carried out heating for multiple times steam to
Wet salt shape, to remove unnecessary HF.Wherein, electric hot plate heating temperature be 100-200 DEG C, preferred 150-170 DEG C, for example, can
To adopt heating-up temperature as 160 DEG C.
Inner mark solution and mineral acid are added in most backward reservoir bitumen sample, carries out heating molten sample.It is preferred that, the molten sample of internal standard is
The Rh solution of 500ng/mL, mineral acid is HNO3。
In one specifically embodiment, take 0.0300g reservoir bitumen samples and be put in the TEFLON cups of 10mL;Add
0.2mLHF and 3mL HNO3Seal, and load in stainless steel outer sleeve, in an oven with 185 DEG C of bakings 12 hours, after cooling
On electric hot plate, 160 DEG C are steamed to wet salt shape;Add 1mL HNO3, and on electric hot plate 160 DEG C steam to wet salt shape, this " add 1mL
HNO3, and on electric hot plate 160 DEG C steam to wet salt shape " step can repeat, for example repeat three times to remove unnecessary HF
Go;The Rh inner mark solutions of 0.2mL500ng/mL are added, 2mL HNO are added3With 4mL water, seal, be put in baking oven in
140 DEG C are heated 5 hours;Move to after cooling in 15mL centrifuge tubes, be diluted to 10mL.
Source rock sample solution and reservoir bitumen sample solution in centrifuge tube is carried out into upper machine (ICP-MS) detection respectively,
To obtain the content of the micro and rare earth element of source rock sample and reservoir bitumen sample.
In a preferred embodiment of the invention, according to the micro of the source rock sample and reservoir bitumen sample of above-mentioned gained
With the content of rare earth element, match somebody with somebody component, cluster analyses and typical case using Australian post-Archean average shale (PAAS) standard
At least one in parameter, sets up Evaluation of source rocks model, to determine the source of reservoir bitumen sample, and according to reservoir bitumen sample
The source of product and finally judge the source of reservoir bitumen.
In one embodiment, first, done according to the content of the micro or rare earth element of the source rock sample for being obtained
Average shale (PAAS) standard of Australian post-Archean matches somebody with somebody component, and by after the Australia of the source rock sample of same layer position
The average shale standard of Archaeozoic era is classified as a class with component, by the average shale of Australian post-Archean of such source rock sample
Standard matches somebody with somebody component as the source rock sample evaluation model of this layer of position.For example, 4 source rock samples are taken in same layer position, such as
Shown in Figure 1A, the Australia of source rock sample 1-1, source rock sample 1-2, source rock sample 1-3 and source rock sample 1-4
The average shale standard of post-Archean is classified as a class with component, used as the source rock sample evaluation model of this layer of position.In the same manner, as schemed
Shown in 1B, 3 source rock samples are taken in another same layer position, the source rock sample 2-1, hydrocarbon source rock sample in same layer position
The PAAS standards of product 2-2 and source rock sample 2-3 are classified as a class with component, used as the evaluation mould of the source rock sample of this layer of position
Type.Then, reservoir bitumen sample corresponding trace element or rare earth element content are also done into Australian post-Archean average
Shale standard matches somebody with somebody component, and carries out with component with the average shale standard of the Australian post-Archean of the source rock sample classified
Contrast, according to the whether same or like source to judge reservoir bitumen sample of tendency, specifically, reservoir bitumen sample
PAAS standards then conclude reservoir bitumen sample source in such hydrocarbon source rock with component closer to which class hydrocarbon source rock.For example, reservoir drip
Evaluation models of the PAAS of blue or green sample 1 with the first kind hydrocarbon source rock 1 shown in component closer to Figure 1A, then conclude reservoir bitumen sample
Product 1 derive from hydrocarbon source rock 1.
In a specific embodiment, according to the layer position of source rock sample, the source rock sample in each layer position is made
Component is matched somebody with somebody in PAAS standardization, sets up evaluation model.As shown in Figures 1 A and 1 B 1, two groups of separate hydrocarbon source rocks according to layer position
In sample, the PAAS standardization of source rock sample is presented concordance feature with component, thus can be effectively used for hydrocarbon source rock contrast.
Match somebody with somebody PAAS standardization of the PAAS standardization of reservoir bitumen sample with component (as shown in Figure 1 C and 1D) with source rock sample again
Component is contrasted, and similarity height then can conclude that the source of the reservoir bitumen sample, for example, the reservoir bitumen sample of Fig. 1 C
PAAS standardization is closer with hydrocarbon source rock 1 with component, can be initially believed that reservoir bitumen sample 1 is originated for hydrocarbon source rock 1.In the same manner
Ground, reservoir bitumen sample 2 are originated for hydrocarbon source rock 2.
In the second embodiment, first, same layer position hydrocarbon source rock is classified as into a class, and according to the micro of source rock sample
Element or rare earth element make Q type cluster analyses dendrograms, draw typical end member feature.Then, according to reservoir bitumen sample
Trace element or rare earth element carry out Q type cluster analyses, and result is presented on the Q type cluster analyses dendrograms of source rock sample
On, for judging that the hydrocarbon source of reservoir bitumen sample is originated.In other words, by reservoir bitumen sample and the micro unit of source rock sample
Element or rare earth element carry out Q type cluster analyses, obtain the cluster analyses dendrogram of source rock sample and reservoir bitumen sample, then enter
Row is compared, and finds out which (several) class hydrocarbon source rock reservoir bitumen derives from.Specifically, on cluster analyses dendrogram, reservoir drip
Blue or green sample then concludes reservoir bitumen sample source in such hydrocarbon source rock closer to which class hydrocarbon source rock.
In a specific embodiment, as shown in Figure 2 A and 2B, first, same layer position hydrocarbon source rock is classified as into a class, example
Such as, layer position 1 collection source rock sample 1-1, source rock sample 1-2, source rock sample 1-3 and source rock sample 1-4 it is micro
Element or rare earth element represent 1 feature of layer position, in the same manner, source rock sample 2-1, source rock sample 2-2 and hydrocarbon source that layer position 2 gathers
The trace element or rare earth element of rock sample product 2-3 represents 2 feature of layer position.Q type cluster analyses are carried out to source rock sample, is set
Shape figure (Fig. 2A), draws typical end member feature.Secondly, reservoir bitumen sample and source rock sample are carried out into Q type cluster analyses, is obtained
Obtain dendrogram (Fig. 2 B).Finally, in the contrast of dendrogram (Fig. 2 B) enterprising row distance, " reservoir bitumen sample 1 " and hydrocarbon source are found
The distance of rock sample product 1-1,1-2,1-3,1-4 is 1, and is 25 with the distance of source rock sample 2-1,2-2,2-3, " reservoir
The distance of asphalt sample 2 " and source rock sample 1-1,1-2,1-3,1-4 is 25, and with source rock sample 2-1,2-2,2-3
Distance is 4, therefore, it was initially believed that reservoir bitumen sample 1 is originated for hydrocarbon source rock 1, reservoir bitumen sample 2 is originated for hydrocarbon source rock 2.
In the 3rd embodiment, according to micronutrient levelss and rare earth element content in source rock sample, to hydrocarbon source rock
Sample carries out depositional environment parameter and thing source source parameter calculates that (depositional environment parameter and thing source parameter of originating is using micro
What constituent content and rare earth element cubage were obtained, such as Y/Ho, computing formula is Y/Ho=mY/mHo, wherein mYRefer to that element Y exists
Constituent content in source rock sample, mHoRefer to constituent contents of the element Ho in source rock sample).First, according to identical layer position
The parameter value of interior source rock sample is close, and the big principle of the parameter differences of different layers position source rock sample, select suitable
Depositional environment parameter and thing source source parameter.Then, the source rock sample of same layer position is classified as a class, and its parameter attribute is used as this
The feature of layer, i.e. evaluation model.Finally, depositional environment parameter is carried out to reservoir bitumen sample and thing source source parameter is calculated, such as
The result of fruit gained is close to the depositional environment parameter of source rock sample and thing source source parameter acquired results are close to, then conclude the storage
Layer asphalt sample derives from such hydrocarbon source rock.
In one specifically embodiment, after the depositional environment parameter and thing source source parameter for obtaining source rock sample,
Each depositional environment parameter and thing source source parameter are calculated, according to the parameter value phase of the source rock sample in identical layer position
Closely, the big principle of the parameter differences of different layers position source rock sample, have selected Y/Ho with two parameters of La/La* as judgement
Foundation.Further, a class is classified as according to the source rock sample of same layer position, it is determined that the evaluation model of layer position 1 and layer position 2:Hydrocarbon
Source rock 1 and hydrocarbon source rock 2, wherein, in hydrocarbon source rock 1, Y/Ho=25.66-26.67 (average 26.00), La/La*=0.93-1.12
(average 1.04), in hydrocarbon source rock 2, Y/Ho=36.47-61.05 (average 51.59), La/La*=1.63-1.97 (averages
1.76).Next, calculating the relevant parameter of reservoir bitumen sample, reservoir bitumen sample 1, Y/Ho=26.66, La/La*=
1.12, reservoir bitumen sample 2, Y/Ho=42.50, La/La*=1.76.By contrast, reservoir bitumen sample 1 is hydrocarbon source rock 1
Source, reservoir bitumen sample 2 are originated for hydrocarbon source rock 2.
Can by above-mentioned conclusion, that is, reservoir bitumen sample source and judge the source of reservoir bitumen.In storage
On the basis of layer asphalt sample collection is representative, can be approximately considered with most sources as main source, with secondary majority be
Secondary source.For example, 100 reservoir bitumen samples have been taken altogether, above-mentioned conclusion shows that 100 reservoir bitumen samples are derived from
Hydrocarbon source rock 1, then conclude that reservoir bitumen derives from hydrocarbon source rock 1.If there is 85 reservoir bitumen sample sources to come for 1,15 in hydrocarbon source rock
Hydrocarbon source rock 2 is come from, then concludes that reservoir bitumen is mainly derived from hydrocarbon source rock 1, it is secondary from hydrocarbon source rock 2.By that analogy.
Certainly it should be noted that according to the average shale standard of Australian post-Archean with component contrast, cluster analyses
Or canonical parameter contrast in it is a kind of just can draw reservoir bitumen originate.But, due to many solutions of geochemistry interpretation of result
Property, according to the difference of practical study work, reservoir bitumen source can also be judged from different methods simultaneously, gained
As a result can mutually with reference to or verification so that acquired results are more accurate.
Can be seen that by embodiment, the method provided using the present invention can effectively by element geochemistry technology application
In organic matter analysis, by suitable processing method, relative analyses determine that hydrocarbon source is originated, and are that (Gu) oil-gas reservoir systematic study is carried
Foundation for reference.
Although the present invention is described in detail, it will be understood by those skilled in the art that in spirit and scope of the invention
Modification will be apparent.However, it should be understood that each side of present invention record, different specific embodiments
Each several part and the various features enumerated can be combined or all or part of exchange.In each above-mentioned specific embodiment, that
A little embodiments with reference to another embodiment suitably can be combined with other embodiment, and this is by by this area skill
Art personnel are to understand.Additionally, it will be understood to those of skill in the art that description above is only the mode of example, not purport
Limiting the present invention.
Claims (10)
1. it is a kind of for hydrocarbon source contrast element geochemistry method, it is characterised in that comprise the following steps:
Step one, collection source rock sample and reservoir bitumen sample, and source rock sample and reservoir bitumen sample are obtained respectively
Inorganic elementss geochemical constituent testing result;
Step 2, according to the inorganic elementss geochemical constituent testing result of the source rock sample of gained, builds to source rock sample
Vertical evaluation model;
Step 3, sets up according to the inorganic elementss geochemical constituent testing result of reservoir bitumen sample and according to source rock sample
Evaluation model carry out contrasting the hydrocarbon source for obtaining reservoir bitumen sample source;
Step 4, judges the hydrocarbon source source of reservoir bitumen.
2. method according to claim 1, it is characterised in that in step one, the inorganic elementss geochemical constituent
Testing result includes the content of trace element and rare earth element.
3. method according to claim 1 and 2, it is characterised in that in step one, the source rock sample to gathering are carried out
After washing and grinding, then heating for multiple times is carried out to source rock sample, wherein, need to add in source rock sample before heating for the first time
Enter HF, need inorganic solvent combination, preferred HF and HNO are added in source rock sample before second heating3Combination or HF with
HClO4One kind in combination;And last time adds inner mark solution and mineral acid, preferred Rh inner mark solutions and HNO before heating3。
4. the method according to any one of Claim 1-3, it is characterised in that in step one, the reservoir drip to gathering
After blue or green sample is washed and ground, then heating for multiple times is carried out to reservoir bitumen sample, wherein, need to storage before heating for the first time
Inorganic solvent combination, preferred HF and HNO are added in layer asphalt sample3Combination or HF and HClO4One kind in combination;And it is last
Inner mark solution and mineral acid, preferred Rh inner mark solutions and HNO are added before once heating3。
5. method according to claim 4, it is characterised in that in step one, is heated for the first time to reservoir bitumen sample
Using baking oven mode, the temperature of baking oven for heating is 160-210 DEG C, and the time of baking oven for heating is 6-24 hours.
6. method according to claim 4, it is characterised in that in step one, is heated for the first time to reservoir bitumen sample
HF and HNO is added in forward direction reservoir bitumen sample3, and reservoir bitumen sample and HF and HNO3Mass volume ratio be 1g:(3-
10)ml:(90-110) ml, preferred 1g:(5-8)ml:(95-105)ml.
7. the method according to any one of claim 2 to 6, it is characterised in that in step 2, after Australia
The average shale standard of Archaeozoic era is set up source rock sample with least one in component, cluster analyses and canonical parameter and evaluates mould
Type.
8. method according to claim 7, it is characterised in that in step 2, average using Australian post-Archean
When shale standard sets up source rock sample evaluation model with component, including:To micronutrient levelss in source rock sample or rare earth
Constituent content does the average shale standard of Australian post-Archean with component, after the Australia of the source rock sample of same layer position
The average shale standard of Archaeozoic era is classified as a class with component, by the average shale of Australian post-Archean of such source rock sample
Standard matches somebody with somebody component as the source rock sample evaluation model of this layer of position, in step 3, to trace element in reservoir bitumen sample
Content or rare earth element content do the average shale standard of Australian post-Archean with component, to analyze the hydrocarbon of reservoir bitumen sample
Originate in source.
9. method according to claim 7, it is characterised in that in step 2, using during cluster analyses, including:Will be same
One layer of position source rock sample is classified as a class, according to micronutrient levelss in such source rock sample or rare earth element content, enters
Row Q type cluster analyses, and cluster analyses dendrogram is obtained, in step 3, Q type cluster analyses are carried out to reservoir bitumen sample,
To analyze the hydrocarbon source source of reservoir bitumen sample.
10. method according to claim 7, it is characterised in that in step 2, during using canonical parameter method including right
Source rock sample carries out depositional environment parameter and thing source source parameter is calculated, and in step 3, reservoir bitumen sample is sunk
Product ambient parameter and thing source source parameter are calculated, and are originated with the hydrocarbon source for analyzing reservoir bitumen sample.
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CN107315047A (en) * | 2017-05-26 | 2017-11-03 | 内蒙古科技大学 | A kind of method for reviewing pollution source of water body |
CN107449823A (en) * | 2017-08-08 | 2017-12-08 | 中国石油大学(华东) | Original oil-water contact recognition methods and its application in crude oil filling history is rebuild |
CN110412113A (en) * | 2019-07-08 | 2019-11-05 | 中国石油天然气股份有限公司 | Carry out the method for OIL SOURCE CORRELATION with strontium isotope |
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Cited By (4)
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CN107315047A (en) * | 2017-05-26 | 2017-11-03 | 内蒙古科技大学 | A kind of method for reviewing pollution source of water body |
CN107449823A (en) * | 2017-08-08 | 2017-12-08 | 中国石油大学(华东) | Original oil-water contact recognition methods and its application in crude oil filling history is rebuild |
CN107449823B (en) * | 2017-08-08 | 2020-11-24 | 中国石油大学(华东) | Ancient oil-water interface identification method and application thereof in rebuilding filling history of crude oil |
CN110412113A (en) * | 2019-07-08 | 2019-11-05 | 中国石油天然气股份有限公司 | Carry out the method for OIL SOURCE CORRELATION with strontium isotope |
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