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Identification of Abandoned Channels in Meander River and Impact on Horizontal Well Landing Design in Low Oil Column Reservoir: A Case Study of Lm943Sand of Caofeidian Oilfield in Bohai Bay Area(PDF)

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

Issue:
2015年04期
Page:
475-
Research Field:
Publishing date:

Info

Title:
Identification of Abandoned Channels in Meander River and Impact on Horizontal Well Landing Design in Low Oil Column Reservoir: A Case Study of Lm943Sand of Caofeidian Oilfield in Bohai Bay Area
Author(s):
MENG Peng SU Yanchun FENG Xin GUO Jingmin WANG Wei ZHU Yuguo
(Bohai Oilfield Research Institute, Tianjin Branch, CNOOC, Tianjin300452)
Keywords:
Bohai Bay area Caofeidian oilfield abandoned channel edge water reservoir low oil column reservoir horizontal well landing precision
PACS:
TE112.24
DOI:
10.7657/XJPG20150417
Abstract:
Caofeidian oilfield is a fluvial facies and low oil column reservoir with edge water in Bohai Bay area. It has been developed by horizontal wells for10years, and now its edge water has become secondary bottom water in it, which puts forward higher requirement for late?stage development by horizontal well in terms of water?avoidance height. This paper identifies the abandoned channels in area with a few wells by using the data of directional wells and horizontal wells, predicts them by means of flattening the sand top height in area with no well, and presents the depiction of the internal sand bodies in single channel and draws the plan of sedimentary microfacies. Based on the abandoned channel outcrop in meandering river, the impact of layer position encountered by horizontal well on its water?avoidance height is analyzed for the purpose of guiding the accurate landing design of adjustment wells and providing the basis for comprehensive adjustment plan’s implementation of horizontal wells in Caofeidian oilfield in the future

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Last Update: 2015-09-22