新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (5): 497-499.

• 油气勘探 • 上一篇    下一篇

储集层平面非均质性的地质统计学研究方法

史祥明1, 杨少春1, 叶光辉2, 曹翠1, 陈宁宁1   

  1. 1.中国石油大学 地球资源与信息学院,山东 青岛 266555;
    2.中国石油 青海油田分公司 井下作业公司,青海 海西 816400
  • 收稿日期:2010-03-06 修回日期:2010-05-24 发布日期:2020-10-21
  • 作者简介:史祥明(1984-),男,山东济宁人,在读硕士研究生,矿产普查与勘探,(Tel)15154442903(E-mail)shixiangming-c@163.com.
  • 基金资助:
    国家科技重大油气专项课题(2009ZX05009-003);中央高校基本科研业务费专项(09CX04011A)

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:2010-03-06 Revised:2010-05-24 Published:2020-10-21

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摘要： 根据地质统计学理论,将储集层参数(孔隙度、渗透率、砂体厚度等)视为区域化变量,将变差函数引入到储集层平面非均质性研究中,介绍了实验变差函数的计算方法。在此基础上,提出了评价储集层非均质性的综合评价指标,对储集层参数的变化速度和幅度进行了定量描述,从而实现了对储集层平面非均质性的定量描述。实例研究表明,该方法具一定的可行性和优越性,比变异系数能更好地对平面非均质性进行分类和评价。

关键词: 储集层, 平面非均质性, 变差函数, 综合评价指标, 定量描述

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

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