Identification of Microseepage from Macroseepage and Exploration Practice in Changling Longwanggou Area of Zhenba Block
Received date: 2009-04-09
Revised date: 2009-06-01
Online published: 2009-10-10
The identification of hydrocarbon′s microseepage from its macroseepage could improve the accuracy of interpretation on anomaly geochemical exploration, so we summarize the present research progress about identification marks and pointe out that the indicators, namely soil microbes, headspace gas, acid extraction of soil hydrocarbon and soil gas, appear to be responded differently towards macroseepage and microseepage respectively. The anomalous points of these indicators are linear distribution, high hydrocarbon concentration, more C6+, high alkane alkene ratio where the macroseepage is detected; where the microseepage is presented, the anomalous points of soil microbes are random distribution and seepage hydrocarbon is low concentration, little or no C6+, low alkane alkene ratio. Further investigation on Changling Longwanggou area of Zhenba block of Nandaba fold thrust belt located in western China Sichuan basin show that Longwanggou anomaly zone is of fault macroseepage and may not be vertically above the reservoir, while Changling synclinoria anomaly zone is caused by the microseepage and is vertically above the reservoir. The anomalous samples of soil butane oxidating bacterias andC1—C4from acid extraction of soil are linear distribution, C1—C4 of anomalous samples are highly concentrated (>1 000×10-6）, the alkane/alkene ratios are also high(>10) in Longwanggou anomaly zone while the anomalous samples of soil butane oxidating bacteria are random distribution, values of C1—C4 are low(<1 000×10-6）, the alkane/alkene ratios also are low(<5) in Changling synclinoria anomaly zone.
ZHANG Chun-lin, PANG Xiong-qi,MEI Hai,MEI Bo-wen,LIN Ren-zi,ZHANG Yan-pin . Identification of Microseepage from Macroseepage and Exploration Practice in Changling Longwanggou Area of Zhenba Block[J]. Natural Gas Geoscience, 2009 , 20(5) : 794 -800 . DOI: 10.11764/j.issn.1672-1926.2009.05.794
［1］Klusman R,Saeed M.Comparison of light hydrocarbon mechanisms［C］// Schumacher D，Abrams M A.Hydrocarbon migration and its near-surface expression: AAPG Memoir 66.Tulsa, Oklahoma:AAPG, 1996:157-168.[ZK）][HJ2mm]
［2］Price L C.A critical overview and proposed working model of surface geochemical exploration［C］// Davidson M J.Unconventional Methods Exploration for Petroleum and Natural Gas-IV.Dallas TX:Southern Methodist University Press, 1986: 245-304.
［3］Abrams M A .Significance of hydrocarbon seepage relative to petroleum generation and entrapment［J］.Marine and Petroleum Geology, 2005, 22(4): 457-477.
［4］GoreTM Surveys for oil and gas exploration ［EB/OL］.http://www.gore.com/MungoBlobs/0/560/GORE % 20 Surveys_onshore%20brochure_final,1.pdf.
［5］Rosaire E E.Symposium on geochemical exploration geochemical prospecting for petroleum［J］.AAPG Bulletin, 1940, 24(8):1400-1433.
［6］Link W K.Significance of oil and gas seeps in world oil exploration［J］.AAPG Bulletin,1952, 36(8):1505-1541.
［7］Jones V T,Drozd R J.Predictions of oil and gas potential by near surface geochemistry［J］.AAPG Bulletin, 1983, 67(6):932-952.
［8］夏响华.油气地表地球化学勘探技术的地位与作用前瞻［J］.石油实验地质,2005,27(5): 529-532.
［9］Davis J B.Microbiology in petroleum exploration［C］// Heroy W B.Unconventional methods in exploration for petroleum and natural gas.Dallas TX,Southern Methodist University Press.1969:139-158.
［10］梅海,林壬子,梅博文,等.油气微生物检测技术：理论、实践和应用前景［J］.天然气地球科学, 2008,19(6):888-893.
［11］Soli G G.Microorganisms and geochemical methods of oil prospecting［J］.AAPG Bulletin,1957,41(1):134-140.
［12］Davis J B.Petroleum Microbiology［M］.New York: Elsevier,1967:604.
［13］Tucker J,Hitzman D C.Detained microbial Survey help improve reservoir characterization［J］.Oil & Gas Journal,1994, 92(23):65-69.
［14］Schumacher D, Hitzman D C, Tucker J,et al.Applying highresolution surface geochemistry to assess reservoir compartmentalization and monitor hydrocarbon drainage［C］// Institute for the Study of Earth and Man, Applications of Emerging Technologies:Unconventional Methods in Exploration of Petroleum and Natural Gas Ⅴ.Dallas: Southern Methodist University Press,1997:309-322.
［15］吴传芝.微生物油气勘探技术及其应用［J］.天然气地球科学,2005,16(1):82-87.
［16］梅博文, 袁志华.地质微生物技术在油气勘探开发中的应用［J］.天然气地球科学,2004,15(2):156-161.
［17］索孝东,石东阳.油气地球化学勘探技术发展现状与方向［J］.天然气地球科学,2008,19(2):286-292.
［18］Hitzman D C, Rountree B A, Cunningham K.Integrated microbial and 3D seismic survey: hydrocarbon microseepage in Osage Country[R].Oklahoma: 1999 AAPG Annual Convention, San Antonio, Texas, April 11, 1999Ⅰ Tulsa, Oklahoma: AAPG,1999.
［19］Harbert W, Jones V T, Izzo J,et al.Analysis of light hydrocarbons in soil gases, Lost River region, West Virginia: Relation to stratigraphy and geological structures［J］.AAPG Bulletin, 2006,90(5): 715-734.
［20］Kartsev A A ,Tabasranskii Z A,Subbota M I ,et al.Geochemical methods of prospecting and exploration for petroleum and natural gas［M］.LosAngeles: University of California Press,1959:101-106,332-333.
［21］王锡福,杨晓元,孙六一,等.鄂尔多斯盆地油气化探基本理论和方法［C］// 王锡福,陈安福.鄂尔多斯盆地非地震油气勘探.北京:地质出版社,1992: 27-50.
［22］Saunders D F, Burson K R, Thompson C K.Model for hydrocarbon microseepage and related near-surface alterations［J］.AAPG Bulletin, 1999, 83（1）:170-185.
［23］Philp R P,Crisp P T.Surface geochemical methods used for oil and gas prospecting-a review［J］.Journal of Geochemical Exploration,1982,17(1): 1-34.
［24］Hickey J C, Klusman R W,Voorhees K J.Fault leakage characterization of integrative gas geochemistry/mass spectrometry/pattern recognition procedures［J］:AAPG Bulletin,1983B, 67: 1342.
［25］Ullom W L.Ethylene and propylene in soil gas: occurrences: sources, and impact on interpretation of exploration geochemical data［J］.Association of Petroleum Geochemical Explorationists Bulletin,1988,4: 62-81.
［26］云美厚.对镇巴复杂山地地震采集的思考［J］.石油地球物理勘探,2006, 41(5):504-508.
［27］石文斌.南大巴构造特征及演化［D］.中国地质大学, 2007: 82-84.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号