CN1598541A - Device and method for measuring grade of maturity of oil occurrence rock - Google Patents
Device and method for measuring grade of maturity of oil occurrence rock Download PDFInfo
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- CN1598541A CN1598541A CNA2004100355058A CN200410035505A CN1598541A CN 1598541 A CN1598541 A CN 1598541A CN A2004100355058 A CNA2004100355058 A CN A2004100355058A CN 200410035505 A CN200410035505 A CN 200410035505A CN 1598541 A CN1598541 A CN 1598541A
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- source rock
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- kapillary
- ripeness
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Abstract
The invention is a device and method for measuring source rock maturity. It is made up of optical system forming stripe beam, capillary and observing screen behind it, CCD camera and computer, the capillary is placed horizontally, and its axis is parallel to the axis of the cylinder lens, and maintains the optical system and laser beam coaxial. The method uses parallel sample of source rock with known maturity, and uses CCD camera to record the interference stripe of source rock extract liquid, and differentiates the light and shade stripe and interference grades through image process, and uses the computer to program and forms a program, works out the reflection rate with Abelian reverse transition, creates a standard curve of source rock maturity and its extract liquid. To the source rock sample with unknown maturity, measures its reflection rate of its extract liquid, then it is compared with standard curve and acquires its maturity. The device is simple, the cost is low, and the precision is high.
Description
Technical field
A kind of interference technique of using up is measured the apparatus and method of source rock maturity.
Background technology
In petroleum exploration field, oil source rock refers to generate the rock of oil and rock gas.Organic matter type difference in the oil source rock, its character is also inequality, contains the different oil source rock of organism type, has different genetic potentials.And the organic matter type of oil source rock can be distinguished from the structure and the composition of solvable organic matter (pitch) and insoluble organic matter (kerogen).According to kerogen thermal degradation mechanism, oil and natural gas is organic to produce when being reached certain evolutionary phase by temperature action.A considerable number of and well-behaved oil source rock organic matter also need could form oil and natural gas through maturing.Terrestrial facies and marine bed all can be divided into prematurity, maturation (being further divided into basic, normal, high ripe three inferior sections) and post-mature three phases.Mezzanine level is for producing the hydrocarbon stage; The stage of ripeness has stronger oil generation ability, and this stage can generate low mature oil, mature oil, white oil and moisture; The post-mature stage has the ability of very low generation gaseous hydrocarbon.Exploration practices proves only in ripe oil source rock distributive province higher oil-gas exploration success ratio is arranged, so the maturity assessment of oil source rock also is a decision oil-gas exploration key of success.
The most general optical means that is used to measure source rock maturity at present has vitrinite reflectance method, light transmission.The shortcoming of vitrinite reflectance method is that because oil source rock is oxidized, although its content of organic matter difference, its vitrinite reflectance no longer changes when oil source rock when layer depth is dark accordingly.And light transmission is subjected to the influence of human eye and surrounding environment light for qualitatively judging.Other measuring method also has: kerogenic physical-chemical method, kerogenic element is formed and infra-red sepectrometry, the chemical method of solvable organic matter, pyrolysismethod, form the judgement maturity of organic with the C2-C7 lighter hydrocarbons, and according to the characterized degree of ripeness of C15+ hydro carbons etc., it mainly is the cost height, method is comparatively complicated.
Summary of the invention
The object of the present invention is to provide the apparatus and method that a kind of manufacture craft is simple, with low cost, be suitable for commercialization production, measuring accuracy height, robotization height, fireballing measurement source rock maturity.
For the ease of understanding, it is necessary sketching measuring principle of the present invention.Because the oil source rock of differing maturity contains different solvable organic matters, thereby the refractive index of corresponding extract is different.According to the interference of light principle, the inevitable corresponding different interference fringe of the different refractive index of sample, the i.e. different oil source rock of degree of ripeness, corresponding different interference fringes.The present invention adopts laser instrument as light source, spatial alternation by light beam forms the bar shaped light beam irradiation and covers the kapillary that fills the oil source rock extract, light beam and the light beam interference of passing through kapillary inside by the kapillary upper and lower, form the visible interference fringe of human eye, this interference fringe direction direct and refraction angle is perpendicular, thereby relevant with the refractive index of extract in the kapillary.Take interference fringe with high precision CCD camera earlier during measurement, be not difficult the bright latent menstruation computing machine of interference fringe is carried out digitized processing and then the coordinate of the identification interference fringe of programming, utilize existing Abbe inverse transformation formula to calculate the refractive index of oil source rock extract again, its precision is up to 5 * 10
-6Therefore, key job is that the software of earlier typical curve of the refractive index of the extract of the oil source rock series of several known degree of ripeness and degree of ripeness being made is stored in single-chip microcomputer or the computing machine, with this as the standard testing unknown sample.
The present invention by laser instrument in the interior optical system that forms bar shaped light beam, be near the focal plane kapillary and subsequent film viewing screen and CCD camera and form with the computing machine that contains calculation procedure that links to each other with lead, and capillary water placing flat, its axle with cylindrical lens is parallel, and keeps or meet relevant optical principles such as optical system and laser beam be coaxial.
The optical system of above-mentioned formation bar shaped light beam is made up of concavees lens, convex lens and cylindrical lens, and concavees lens overlap with the convex lens front focus, guarantee the bar shaped light beam irradiation technically and cover capillary midsection 3cm at least, be advisable with 4-5cm, rather than a light pencil is radiated on the particular point capillaceous.This also is one of this apparatus features.
Utilize this device can directly measure oil source rock extract refractive index, and then obtain corresponding source rock maturity, and this apparatus structure is simple, measurement range is big, and cost is low, and light path need not fine adjustment, and is easy to operate.
The present invention is the extract with the oil source rock parallel sample of standard model distilled water or known degree of ripeness, interference fringe with its oil source rock extract of high precision CCD camera record, accurately distinguish the light and shade striped and the interference level of interference pattern by Flame Image Process, the appliance computer programming forms a program of accurately determining interference fringe maximums at different levels and minimum brightness coordinate, use the anti-refractive index that pushes away solution of Abbe inverse transformation, because the oil source rock of the corresponding certain degree of ripeness of certain refractive index, just can obtain the corresponding relation of oil source rock sample degree of ripeness and refractive index, set up a typical curve.To the oil source rock sample of unknown degree of ripeness, record the refractive index of its extract earlier with said apparatus, and then compare with typical curve, just its degree of ripeness be can obtain, thereby the measurement mechanism and the method for the measurement source rock maturity of the new robotization of a cover set up.
Description of drawings
Fig. 1 is a general structure synoptic diagram of the present invention.
Fig. 2 is a structural parameters synoptic diagram of the present invention.
Fig. 3 is a measurement schematic flow sheet of the present invention.
1 laser instrument wherein; 2 concavees lens; 3 convex lens; 4 cylindrical lenses; 5 kapillaries; 6 film viewing screens; 7 casings; 8 cameras; 9 leads; 10 computing machines.
Embodiment
As accompanying drawing 1, shown in Figure 2, the present invention by laser instrument 1 in the interior optical system that forms bar shaped light beam, be near the focal plane kapillary 5 and subsequent film viewing screen 6 and CCD camera 8 and form with the computing machine that contains calculation procedure 10 that links to each other with lead 9, and kapillary 5 horizontal positioned, its axle with cylindrical lens is parallel, and keeps optical system and laser beam coaxial.
The optical system of above-mentioned formation bar shaped light beam is made up of concavees lens 2, convex lens 3 and cylindrical lens 4, and concavees lens 2 overlap with convex lens 3 front focus, guarantees the bar shaped light beam irradiation technically and covers on the kapillary.For dwindling whole device size, convex lens 3 can replace with plano-convex lens, and this moment, it was close to cylindrical lens, as shown in the figure.
As Fig. 2, the focal length of above-mentioned concavees lens 2 is f
1, the focal length of convex lens 3 is f
2, concavees lens 2 overlap with the front focus of convex lens 3, and both spacings are f
2-f
1. focal length is f
3The adjacent convex lens 3 of cylindrical lens 4 place. horizontal with capillary tube is placed near the focal plane of cylindrical lens 4, and it is spool parallel with cylindrical lens.Film viewing screen 6 is for having the translucent screen of coordinate and scale.Concavees lens 2, convex lens 3, cylindrical lens 4, kapillary 5 and film viewing screen 6 can be fixed in the casing 7.The light beam that laser instrument sends becomes bar shaped light beam by the center of all optical components among Fig. 1 through concavees lens 2, convex lens 3, cylindrical lens 4.The irradiation of this bar shaped light beam also covers on the kapillary 5 that the oil source rock extract is housed above-mentioned extracapillary inside radius than being advisable less than 1.5.The axle of cylindrical lens parallels with axle capillaceous.After kapillary, place a film viewing screen 6, observe interference fringe, and take these interference fringes with a CCD camera 8, and interference fringe is carried out Flame Image Process via computing machine, keep the position of those points of brightness maximum on the interference fringes at different levels, strengthen fringe contrast, accurately to determine interference fringe progression, be not difficult to programme and determine the coordinate of the minimum and maximum brightness of interference fringes at different levels, calculate the refractive index of oil source rock extract again by existing Abbe inverse transformation formula, it measures process flow diagram such as Fig. 3.
Be the precision that guarantees to measure, the measurement of sample is independently each other, and sample is all measured under constant temperature.
Above-mentioned laser instrument 1 can be used semiconductor laser, gas or solid state laser, as the He-Ne laser instrument; The green light of various continuous power outputs or the laser instrument 1 of ruddiness, its output power all should be advisable greater than 10mW; The suitable semiconductor laser of power particularly, it is little, in light weight to have a volume, can make portable device; The optional usefulness of CCD camera has GAMMA debugging functions, high-precision being advisable.
Method of the present invention or step: the extract of 1. getting the oil source rock parallel sample of standard model distilled water or known degree of ripeness, the kapillary that its extract is injected said apparatus produces interference fringe, the coordinate of true interference fringe and y axle intersection on the record film viewing screen, record kapillary axis to film viewing screen apart from d, so that in calculating, use; 2. use CCD camera interference fringe, carry out Flame Image Process, keep those points of brightness maximum on the interference fringes at different levels, and determine its y coordinate, compare, determine the amplification factor of picture with true coordinate via computing machine; 3. use the oil source rock parallel sample of at least 9 known degree of ripeness, measure the typical curve of degree of ripeness and extract refractive index, be stored in the computing machine as software with said apparatus; 4. again the extract of the oil source rock sample of unknown degree of ripeness is injected the kapillary of identical material and specification,, calculate refractive index,, promptly can read degree of ripeness with the typical curve contrast with calculation procedure with the interference fringe on the CCD camera film viewing screen.
Claims (10)
1 one kinds of devices of measuring source rock maturity, it is characterized in that it by laser instrument (1) in the interior optical system that forms bar shaped light beam, be in the computing machine that contains calculation procedure (10) that near the focal plane kapillary (5) and subsequent film viewing screen (6) and CCD camera (8) link to each other with lead (9) and form, and kapillary (5) horizontal positioned, its axle with cylindrical lens is parallel, and keeps optical system and laser beam coaxial.
The device of 2 measurement source rock maturity as claimed in claim 1, the optical system that it is characterized in that above-mentioned formation bar shaped light beam is by concavees lens (2), convex lens (3) and cylindrical lens (4) are formed, and concavees lens (2) overlap with the front focus of convex lens (3), and bar shaped light beam irradiation and covering on the kapillary (5).
The device of 3 measurement source rock maturity as claimed in claim 2 is characterized in that above-mentioned concavees lens (2), convex lens (3), cylindrical lens (4), kapillary (5) and film viewing screen (6) to be fixed in the casing (7) and still keeps coaxial relation.
4 devices as claim 2 or 3 described measurement source rock maturity is characterized in that the available plano-convex lens of above-mentioned convex lens (3) replaces.
5 devices as claim 1 or 3 described measurement source rock maturity is characterized in that the outer inside radius ratio of above-mentioned kapillary (5) is less than 1.5.
The device of 6 measurement source rock maturity as claimed in claim 1 is characterized in that above-mentioned film viewing screen (6) is for having the translucent screen of coordinate and scale.
The device of 7 measurement source rock maturity as claimed in claim 1 is characterized in that the green light of the available various continuous power outputs of above-mentioned laser instrument (1) or the semiconductor laser of ruddiness.
The device of 8 measurement source rock maturity as claimed in claim 1 is characterized in that above-mentioned laser instrument (1) can be gas or solid state laser, as the He-Ne laser instrument.
The device of 9 measurement source rock maturity as claimed in claim 1, the output power that it is characterized in that above-mentioned laser instrument (1) is greater than 10mW.
10 measure the method for source rock maturity: the extract of 1. getting the oil source rock parallel sample of standard model such as distilled water or known degree of ripeness, inject the kapillary of said apparatus, produce interference fringe, the coordinate of true interference fringe and y axle intersection on the record film viewing screen, and record kapillary axis to film viewing screen apart from d, so that in calculating, use; 2. use CCD camera interference fringe, carry out Flame Image Process, keep those points of interference fringe brightness maximums at different levels, and determine its y coordinate, compare, determine the amplification factor of picture with true coordinate via computing machine; 3. use the oil source rock parallel sample of at least 9 known degree of ripeness, measure the typical curve of degree of ripeness and extract refractive index, be stored in the computing machine as software with said apparatus; 4. again the extract of the oil source rock sample of unknown degree of ripeness is injected the kapillary of identical material and specification,, calculate refractive index,, promptly can read degree of ripeness with the typical curve contrast with calculation procedure with the interference fringe on the CCD camera film viewing screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100355058A CN100451620C (en) | 2004-08-03 | 2004-08-03 | Device and method for measuring grade of maturity of oil occurrence rock |
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| CNB2004100355058A CN100451620C (en) | 2004-08-03 | 2004-08-03 | Device and method for measuring grade of maturity of oil occurrence rock |
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| CN1598541A true CN1598541A (en) | 2005-03-23 |
| CN100451620C CN100451620C (en) | 2009-01-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320340C (en) * | 2006-01-20 | 2007-06-06 | 清华大学 | Method and apparatus for extracting order value of coherent gradient sensing interference fringe |
| CN107046608A (en) * | 2016-02-08 | 2017-08-15 | 富士施乐株式会社 | Terminal installation, diagnostic system and diagnostic method |
| CN107957411A (en) * | 2017-10-27 | 2018-04-24 | 中国石油天然气股份有限公司 | Method and device for detecting maturity of oil source rock by holographic fluorescence |
| CN108120678A (en) * | 2017-12-13 | 2018-06-05 | 太原理工大学 | A kind of detection device and method quantitative based on scattering light photothermal interference biochemistry |
| CN108613926A (en) * | 2016-12-13 | 2018-10-02 | 北京邮电大学 | Capillary interferes measurement experiment device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2067831U (en) * | 1989-10-23 | 1990-12-19 | 机械电子工业部第八研究所 | Optical fiber liquid concentration meter |
| US5115127A (en) * | 1990-01-03 | 1992-05-19 | The United States Of America As Represented By The Secretary Of The Navy | Optical fiber sensor for measuring physical properties of fluids |
| US6181429B1 (en) * | 1997-12-22 | 2001-01-30 | Pirelli Cavi E Sistemi S.P.A. | Interferometer for measurements of optical properties in bulk samples |
| CN2729701Y (en) * | 2004-08-03 | 2005-09-28 | 中国海洋大学 | Apparatus for measuring naturity degree of occurrence oil rock |
-
2004
- 2004-08-03 CN CNB2004100355058A patent/CN100451620C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320340C (en) * | 2006-01-20 | 2007-06-06 | 清华大学 | Method and apparatus for extracting order value of coherent gradient sensing interference fringe |
| CN107046608A (en) * | 2016-02-08 | 2017-08-15 | 富士施乐株式会社 | Terminal installation, diagnostic system and diagnostic method |
| CN107046608B (en) * | 2016-02-08 | 2021-07-20 | 富士施乐株式会社 | Terminal device, diagnostic system, and diagnostic method |
| CN108613926A (en) * | 2016-12-13 | 2018-10-02 | 北京邮电大学 | Capillary interferes measurement experiment device |
| CN107957411A (en) * | 2017-10-27 | 2018-04-24 | 中国石油天然气股份有限公司 | Method and device for detecting maturity of oil source rock by holographic fluorescence |
| CN107957411B (en) * | 2017-10-27 | 2020-10-09 | 中国石油天然气股份有限公司 | Method and device for detecting maturity of oil source rock by holographic fluorescence |
| CN108120678A (en) * | 2017-12-13 | 2018-06-05 | 太原理工大学 | A kind of detection device and method quantitative based on scattering light photothermal interference biochemistry |
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|---|---|
| CN100451620C (en) | 2009-01-14 |
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