HETEROGENEITY AND IITS IMPACT ON REMAINING OIL DDISTRIBUTION OF LOW PERMEABILITY RESERVOIRS IN THE HEI46 BLOCK

MENG Ningning; LIU Huaishan; ZHANG Jinliang; XIE Jun; YUAN Yong

doi:10.3724/SP.J.1140.2016.01014

Marine Geology & Quaternary Geology > 2016 > 36(1): 143-150. > DOI: 10.3724/SP.J.1140.2016.01014

MENG Ningning, LIU Huaishan, ZHANG Jinliang, XIE Jun, YUAN Yong. HETEROGENEITY AND IITS IMPACT ON REMAINING OIL DDISTRIBUTION OF LOW PERMEABILITY RESERVOIRS IN THE HEI46 BLOCK[J]. Marine Geology & Quaternary Geology, 2016, 36(1): 143-150. DOI: 10.3724/SP.J.1140.2016.01014

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HETEROGENEITY AND IITS IMPACT ON REMAINING OIL DDISTRIBUTION OF LOW PERMEABILITY RESERVOIRS IN THE HEI46 BLOCK

1. College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;
2. College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China;
3. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China

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Received Date: May 21, 2015
Revised Date: December 29, 2015

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Abstract

Abstract

Low-permeability reservoir is one of the reservoirs with the most difficult decisions during the oil and gas exploration. Hei46 block in Songliao Basin is difficult for exploitation due to poor physical property and low recovery degree, high moisture content of reservoir as well as strong heterogeneity. Reservoir heterogeneity in the first member of Qingshankou Formation including intralayer, interlayer and plane heterogeneity are studied on the basis of core observation, laboratory experiments and logging interpretation. The article links heterogeneity in different depositional facies, and determines the effects of heterogeneity on remaining oil distribution can be determined. Under the influence of reverse rhythm, the upper parts of oil-bearing layers show coarse lithology, as well as higher permeability, water injectivity index and producing degree. Combining with numerical simulation results, we hold that water flows primarily along high permeability zones causing remaining oil enrichment in low permeability regions. Results of the heterogeneity study can be correlated well with the field testing resultsand thus have significant implications for the further petroleum exploration and water-injection exploitation.
- heterogeneity,
- remaining oil distribution,
- depositional facies,
- low-permeability reservoirs,
- Hei46 block,
- Songliao Basin

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References (21)

References

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HETEROGENEITY AND IITS IMPACT ON REMAINING OIL DDISTRIBUTION OF LOW PERMEABILITY RESERVOIRS IN THE HEI46 BLOCK