Xinjiang Petroleum Geology ›› 2010, Vol. 31 ›› Issue (5): 543-545.

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Application of Sidetracking Horizontal Well to Adjustment for Luliang Oilfield Development

CHEN Lun-jun, JI CHENG-wei, MA Ji, LI Bin-wen, YANG Zhi-qiang, LEI Ying   

  1. Luliang Oilfield Operation District, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2010-05-18 Published:2020-10-21

Abstract: The Hutubihe reservoir of Lower Cretaceous in Wellblock Lu-9 in Luliang oil field in Junggar basin is a typical sandstone reservoir with thin oil layers and active edge and bottom water. Affected by the edge and bottom water coning and injected water breakthrough, some wells have entered into high water cut stage with low recovery factor and difficult incremental production. For this reason, several measures have been applied to in-depth study of watered-out oil layers' status and water drive regularity and determination of remained oil-enriched area. This paper optimizes the main technical parameters of sidetracking horizontal well by means of reservoir engineering and numerical simulation. In 2008-2009, 14 sidetracking horizontal wells were drilled, with incremental production per well of 8.1 t/d in average, water cut drawdown by percentage of 47.2 and productivity increase of 2.69×104 t.

Key words: Junggar basin, Luliang oil field, edge-bottom water reservoir, remained oil, sidetracking horizontal well

CLC Number: