CN1790056A - Method for detecting oil and gas by means of resonance principle - Google Patents
Method for detecting oil and gas by means of resonance principle Download PDFInfo
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- CN1790056A CN1790056A CN 200510012037 CN200510012037A CN1790056A CN 1790056 A CN1790056 A CN 1790056A CN 200510012037 CN200510012037 CN 200510012037 CN 200510012037 A CN200510012037 A CN 200510012037A CN 1790056 A CN1790056 A CN 1790056A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 31
- 238000005516 engineering process Methods 0.000 claims description 30
- 238000009825 accumulation Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000004220 aggregation Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 description 13
- 238000009774 resonance method Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 2
- -1 and as can be seen Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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Abstract
The invention discloses an oil-gas detecting method of resonance elementary, which analyzes the underground formation position corresponding to the intrinsic frequency band of oil-gas storing layer as the oil-gas aggregation part. The method improves the detecting successful ratio to reduce the oil exploration risk, which increases the investment returning rate.
Description
Technical field
The present invention relates to the oil and gas testing technique in the petroleum prospecting, particularly a kind of method of utilizing resonance principle to carry out oil and gas detection.Adopt this method, oil and gas reservoir and oil-gas accumulation position under helping definitely, thus effectively reduce the petroleum prospecting risk.
Background technology
Petroleum prospecting is an industry that has great risk, in order to reduce exploration risk, improve rate of return on investment, oil and gas testing technique has obtained using widely in petroleum prospecting, existing oil and gas testing technique mainly utilizes the high frequency absorption phenomenon to carry out oil and gas detection, because except that oily can cause the high frequency absorption phenomenon, other dredges factors such as stratum, crack as coal seam, pine can both cause high frequency absorption, therefore, the success ratio of existing oil and gas testing technique is lower, the highlyest can only reach 70%, be not very big for the effect that reduces the petroleum prospecting risk.Therefore, the inventor carries out deep research and analysis through the tectonic structure to the oil gas zone, has proposed the notion of resonance method oil and gas detection first.Because the reservoir of oily has different natural frequencys with the stratum of oily not, even both natural frequencys differ bigger, and this just makes that the notion of resonance method oil and gas detection is set up.The inventor utilizes the original earthquake data data of seismic event technology acquisition and the frequency splitting technology in the computer data processing, has finished the invention of resonance method oil and gas detection.Wherein seismic event technology and frequency splitting technology are prior art.
Summary of the invention
The present invention is directed to the blank that exists in the prior art, a kind of method of utilizing resonance principle to carry out oil and gas detection is provided, adopt oil and gas reservoir and the oil-gas accumulation position of this method under helping definitely, solved the low problem of oil and gas detection success ratio well, thereby reduce the risk of petroleum prospecting effectively, improve rate of return on investment.
Technical conceive of the present invention is as follows:
During the reservoir oily, have certain natural frequency, this natural frequency differs bigger with the natural frequency of oily not, and seismic event resonance or resonance effect can occur at this natural frequency place during by oil and gas reservoir.Utilize frequency splitting technology, isolate the amplitude or the energy datum of oil gas resonance band correspondence from the petroleum seismic data, the oily position is represented in the place that this value data is big relatively.The resonance method oil and gas detection has solved the low problem of oil and gas detection success ratio well, can reduce the risk of petroleum prospecting very significantly, improves rate of return on investment.
Technical scheme of the present invention is as follows:
Utilize resonance principle to carry out the method for oil and gas detection, it is characterized in that: from seismic data, parse the subsurface formations position with the natural frequency section generation resonance of oil and gas reservoir, and with the position of this position of stratum as oil-gas accumulation.
Frequency splitting technology is adopted in described parsing to seismic data.
Described frequency splitting technology is the wavelet transformation frequency splitting technology.
Described frequency splitting technology is the narrow-band filtering frequency splitting technology.
The natural frequency section of described oil and gas reservoir is below the 20Hz.
The natural frequency section of described oil and gas reservoir is below the 18Hz.
The natural frequency section of described oil and gas reservoir is below the 16Hz.
The band bandwidth of described frequency division is 1-7Hz.
The band bandwidth of described frequency division is 3-6Hz.
The band bandwidth of described frequency division is 4Hz or 5Hz.
Technique effect of the present invention is as follows:
Because the method for utilizing resonance principle to carry out oil and gas detection of the present invention, adopt with the diverse approach of prior art seismic data is resolved, draw the subsurface formations position with the natural frequency section generation resonance of oil and gas reservoir, and with the position of this position of stratum as oil-gas accumulation; This just makes the present invention not only simple, and reliable effectively, promptly can be by from the petroleum seismic data, isolating the amplitude or the energy datum of oil gas resonance band correspondence, and the big relatively indication oily position, place of this value data.Therefore, the present invention helps oil and gas reservoir and the oil-gas accumulation position in definite underground structure, has solved the low problem of oil and gas detection success ratio well, thereby has reduced the risk of petroleum prospecting effectively, improves rate of return on investment.Even more important a bit is that technique effect of the present invention has obtained sufficient practice test.
Because frequency splitting technology is adopted in the parsing to seismic data, comprise other frequency splitting technologies such as wavelet transformation frequency splitting technology, narrow-band filtering frequency splitting technology, especially wavelet transformation frequency splitting technology, isolate the amplitude or the energy datum of resonance band correspondence, the local corresponding oily position that this value data is big relatively.
Because the natural frequency section of oil and gas reservoir is below the 20Hz, or further is locked in below the 18Hz, even is locked in below the 16Hz, this just can suit the tectonic structure in oil gas zone more, thereby reduces workload widely, increases work efficiency.
The band bandwidth of described frequency division is 1-7Hz, or further is optimized for 3-6Hz, even is optimized for 4Hz or 5Hz, and this just helps enforcement of the present invention more.The resonance method oil and gas testing technique adopts the frequency splitting technology of optimizing, and can isolate the attribute data of definite oil and gas reservoir natural frequency corresponding frequency band, therefore has the following advantages: be detected as the power height, be higher than 90%; Testing result is not subjected to the coal seam, pine is dredged other factorses such as stratum, crack influences; Can directly seek oil gas, reduce the oil-gas exploration cost significantly.
Description of drawings
Fig. 1 is domestic certain oil well resonance method oil and gas detection figure of embodiment 1.
Fig. 2 is domestic certain oil field 3 mouthfuls of well resonance methods oil and gas detection figure of embodiment 2.
Fig. 3 is domestic certain oil field 5 mouthfuls of well resonance methods oil and gas detection figure of embodiment 3.
Fig. 4 is domestic certain oil field 3 mouthfuls of well resonance methods oil and gas detection figure of embodiment 4.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
The invention of resonance method oil and gas detection has solved the low problem of oil and gas detection success ratio well, can reduce the risk of petroleum prospecting very significantly, improves rate of return on investment.
Technical thought of the present invention is as follows:
During the reservoir oily, has certain natural frequency, this natural frequency is generally below 20Hz, differ bigger with the natural frequency of oily not, when seismic event passes through oil and gas reservoir, resonance (i.e. resonance) phenomenon can occur at this natural frequency place, phenomenon appears strengthening in the amplitude of this natural frequency correspondence or energy.
Utilize frequency splitting technology, comprise other frequency splitting technologies such as wavelet transformation frequency splitting technology, narrow-band filtering frequency splitting technology, especially wavelet transformation frequency splitting technology is isolated the amplitude or the energy datum of resonance band correspondence, the local corresponding oily position that this value data is big relatively.
The core of technical solution is: use the know-why of resonance method oil and gas detection, utilize frequency splitting technology, isolate the amplitude or the energy datum of oil gas resonance band correspondence from the petroleum seismic data, the indication oily position, place that this value data is big relatively.
Relevant several explanations of nouns are as follows:
Seismic data: artificial excitation's seismic event, seismic event is propagated downwards and is passed the stratum, produces reflection at the bed boundary place, upwards propagates then, the place is received the data information that obtains by instrument on ground, and this data is handled other data that obtains through the petroleum seismic process software.
Resonance: when seismic event is propagated in the stratum, when the seismic event frequency identical with the stratum frequency or near the time, seismic amplitude occur to increase phenomenon.
Frequency splitting technology: from wide band seismic data, isolate the narrow relatively seismic data of frequency range.
Technique effect of the present invention and advantage are as follows:
The resonance method oil and gas testing technique adopts the frequency splitting technology of optimizing, and can isolate the attribute data of definite oil and gas reservoir natural frequency corresponding frequency band, therefore has the following advantages:
1. be detected as the power height, be higher than 90%;
2. testing result is not subjected to the coal seam, pine is dredged other factorses such as stratum, crack influences;
3. can directly seek oil gas, reduce the oil-gas exploration cost significantly.
In a word bright about Fig. 1 to Fig. 4: Fig. 1 to Fig. 4 is the resonance method oil and gas detection application example of two oil branch officies at home, is detected as power and has reached more than 95%.There is a color scale on the right of accompanying drawing, and red color represents numerical value big, has shown the position of oil gas, and Lan Yanse represents numerical value little, and the centre is yellowish green transition color, represents numerical value from large to small.Redness in the accompanying drawing represents that oily is good, and yellow expression oily is better, green expression oily difference or oily not, and blueness is represented not oily.Horizontal ordinate is represented relative position (distance a, for example interval is represented 25 meters), and ordinate is the time, represents relative depth (for example, time * formation velocity=degree of depth).
As shown in Figure 1, the red and yellow position of having represented oil reservoir among the figure, red vertical line is represented the position of oil well, and as can be seen, oil well is just in time beaten the enrichment positions at oil, and the oil bondary at other position is clear.
As shown in Figure 2, the red position of having represented gas-bearing formation among the figure, red vertical line is represented the position of well, and as can be seen, middle well is just in time beaten the enrichment positions at gas reservoir, and other two mouthfuls of wells are beaten in not gassiness zone, testing result and actual coincidence.
As shown in Figure 3, red gassiness is than good position among the figure, and yellow green is represented the gassiness poor position, and red vertical line is represented the position of well, and as can be seen, the gas bearing condition and the testing result of each well meet.
As shown in Figure 4, red expression gassiness good position among the figure, yellow expression gassiness is than good position, and red vertical line is represented the position of well, and as can be seen, the gas bearing condition and the testing result of 3 mouthfuls of wells meet.
Should be pointed out that above embodiment can help those skilled in the art more fully to understand the present invention, but do not limit the present invention in any way.
Claims (10)
1. utilize resonance principle to carry out the method for oil and gas detection, it is characterized in that: from seismic data, parse the underground position of stratum with the natural frequency section generation resonance of oil and gas reservoir, and with the position of this position of stratum as oil-gas accumulation.
2. the method for utilizing resonance principle to carry out oil and gas detection according to claim 1 is characterized in that: frequency splitting technology is adopted in described parsing to seismic data.
3. the method for utilizing resonance principle to carry out oil and gas detection according to claim 2 is characterized in that: described frequency splitting technology is the wavelet transformation frequency splitting technology.
4. the method for utilizing resonance principle to carry out oil and gas detection according to claim 2 is characterized in that: described frequency splitting technology is the narrow-band filtering frequency splitting technology.
5. the method for utilizing resonance principle to carry out oil and gas detection according to claim 1 is characterized in that: the natural frequency section of described oil and gas reservoir is below the 20Hz.
6. the method for utilizing resonance principle to carry out oil and gas detection according to claim 5 is characterized in that: the natural frequency section of described oil and gas reservoir is below the 18Hz.
7. the method for utilizing resonance principle to carry out oil and gas detection according to claim 6 is characterized in that: the natural frequency section of described oil and gas reservoir is below the 16Hz.
8. the method for utilizing resonance principle to carry out oil and gas detection according to claim 1 is characterized in that: the band bandwidth of described frequency division is 1-7Hz.
9. the method for utilizing resonance principle to carry out oil and gas detection according to claim 8 is characterized in that: the band bandwidth of described frequency division is 3-6Hz.
10. the method for utilizing resonance principle to carry out oil and gas detection according to claim 9 is characterized in that: the band bandwidth of described frequency division is 4Hz or 5Hz.
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| CNB2005100120377A CN100353184C (en) | 2005-06-29 | 2005-06-29 | Method for detecting oil and gas by means of resonance principle |
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| CNB2005100120377A CN100353184C (en) | 2005-06-29 | 2005-06-29 | Method for detecting oil and gas by means of resonance principle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102893183A (en) * | 2010-03-05 | 2013-01-23 | 瓦勒吉有限责任公司 | Active noise injection computations for improved predictability in oil and gas reservoir discovery and characterization |
| CN102037380B (en) * | 2008-04-07 | 2013-05-29 | 雪佛龙美国公司 | Lithofacies classification system and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2473607C (en) * | 2009-09-14 | 2013-03-06 | Hannes Zuercher | Locate oil or gas passively by observing a porous oil and gas saturated system giving off its characteristic resonance response to ambient background noise |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2145102C1 (en) * | 1997-12-29 | 2000-01-27 | Закрытое акционерное общество АНЧАР | Method for search for oil-gas fields in water area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102037380B (en) * | 2008-04-07 | 2013-05-29 | 雪佛龙美国公司 | Lithofacies classification system and method |
| CN102893183A (en) * | 2010-03-05 | 2013-01-23 | 瓦勒吉有限责任公司 | Active noise injection computations for improved predictability in oil and gas reservoir discovery and characterization |
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Address after: 100192 room 101-49, 4th floor, building 1, 8 Heiquan Road, Haidian District, Beijing Patentee after: Beijing air age Technology Co.,Ltd. Address before: 100029 room 2007, unit 3, West Beichen Road, Chaoyang District, Beijing, 2007. Patentee before: Beijing air age Technology Co.,Ltd. |
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