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Division and Evaluation of FracturedVuggy ReservoirsFractureVug Units of HA601 Wellblock in Halahatang Oilfield, Tarim Basin(PDF)

《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

Issue:
2015年04期
Page:
436-
Research Field:
Publishing date:

Info

Title:
Division and Evaluation of FracturedVuggy ReservoirsFractureVug Units of HA601 Wellblock in Halahatang Oilfield, Tarim Basin
Author(s):
LIAO Tao1 HOU Jiagen1 CHEN Lixin2 MA Ke1 YANG Wenming2 DONG Yue1
(1.College of Geosciences, China University of Petroleum, Beijing102249, China;2. Tabei Project Management Department, Tarim Oilfield Company, PetroChina, Korla, Xinjiang841000, China)
Keywords:
Tarim basin Halahatang oilfield Ordovician carbonate fracturedvuggy reservoir fracturevug unit evaluation criterion
PACS:
TE112.221
DOI:
10.7657/XJPG20150410
Abstract:
Taking HA601wellblock in Halahatang oilfield as an example, based on the reservoir prediction, guided by the Ordovician outcrop in Tabei area (northern Tarim basin), this paper presents three genetic types of fractured?vuggy reservoir formed in the karstification, including tubulose underground river caves, caves controlled by faults and rivers, caves controlled by faults; considering the difficulties in fracture?vug unit division, it provides two divisive methods of static reservoir prediction and numerical well test to confirm the boundary of fracture?vug units. The study indicates that the key factors for controlling fracture?vug units in carbonate interstratum area is river systems in Lianglitage formation and faults. Based on the scale of reservoir body, geological reserves, energy index, genetic type and pressure level, it establishes the evaluation criterion for fracture?vug units in carbonate interstratum area, and applies it to all the well?controlled and nonwell?controlled units, which provide a reference for well deployment and development adjustment of Halahatang oilfield in the future

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Last Update: 2015-09-21