高温高盐油藏二次开发深部调驱技术与矿场试验

doi:10.11743/ogg20150419

石油与天然气地质 ›› 2015, Vol. 36 ›› Issue (4): 681-687.doi: 10.11743/ogg20150419

高温高盐油藏二次开发深部调驱技术与矿场试验

杨中建, 贾锁刚, 张立会, 窦红梅, 曾立军, 朱秀雨, 何佳, 杨璐

中国石油青海油田分公司, 甘肃敦煌 736202

收稿日期:2014-12-21 修回日期:2015-04-03 出版日期:2015-08-08 发布日期:2015-08-28
第一作者简介:杨中建(1982—),男,硕士,调驱技术应用。E-mail:yangzjqh@petrochina.com.cn。
基金项目:
中石油青海油田分公司尕斯库勒油田E₃¹油藏二次开发深部调驱试验(2011-ZG-006004)。

Deep profile correction for redevelopment of high-temperature and high-salinity reservoirs and pilot test

Yang Zhongjian, Jia Suogang, Zhang Lihui, Dou Hongmei, Zeng Lijun, Zhu Xiuyu, He Jia, Yang Lu

Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China

Received:2014-12-21 Revised:2015-04-03 Online:2015-08-08 Published:2015-08-28

摘要/Abstract

摘要：

以青海尕斯库勒油田E₃¹油藏二次开发为背景，针对油藏开发后期开发矛盾凸显和剩余油高度分散的问题，开展高温高盐油藏深部调驱技术研究与矿场试验，在油藏精细化研究基础上，优选试验层位，以“15注30采”部署调驱井网，结合水流优势通道研究，建立“堵、调”相结合的深部调驱工艺技术路线。通过丙型水驱特征曲线预测，实施调驱后试验区提高采收率2.1%，取得了较好的调驱效果，在试验过程中加强调驱机理认识和注入参数调整，通过调驱前后吸水剖面、产液剖面对比分析，试验区调后层间、层内矛盾得到改善，主力层驱油效率提高、次、非主力层得到动用，表明深部调驱是一项既有提高油藏驱油效率又能提高水驱储量动用程度的提高采收率技术，具有一定的推广应用前景，对处于开发后期的同类型油藏深部调驱技术运用具有较好的借鉴意义。

关键词: 二次开发, 深部调驱, 提高原油采收率, 尕斯库勒油田

Abstract:

In viewing the serious injection-production contradictions and highly-dispersed residual oil distribution in the late stage of development of E₃¹ reservoir in Kuergasi oilfield in Qinhai Province, we performed deep profile correction technology laboratory study and pilot test in the high-temperature and high-salinity reservoirs.Based on detailed analyses of the reservoirs, a well pattern with 15 injectors and 30 producers were selected for the pilot test.A technological process with water-plugging and profile correction integrated is established based on identification of preferential water pathways.Flooding characteristic curve shows an incremental recovery factor of 2.1% was achieved during the pilot.During the process, mechanisms of profile correction were further explored and various combinations of injection parameters were tried.Comparing the water-intake profiles and producing profiles before and after the pilot shows that the post-development syndrome was greatly improved by successfully tapping the producing potential of both major and minor oil producing layers.The study indicates that the procedure works effectively in increasing flooding sweep efficiency and the ratio of total producing interval thickness to total perforated interval thickness of producers. For brown reservoirs who have suffered from the similar problem to the one concerned, the procedure may be applied to solve certain technological problems.

Key words: secondary development, deep flooding, enhanced oil recovery, Gasikule oilfield

中图分类号:

TE341

杨中建,贾锁刚,张立会,等. 高温高盐油藏二次开发深部调驱技术与矿场试验[J]. 石油与天然气地质, 2015, 36(4): 681-687. doi: 10.11743/ogg20150419 Yang Zhongjian,Jia Suogang,Zhang Lihui,et al. Deep profile correction for redevelopment of high-temperature and high-salinity reservoirs and pilot test[J]. Oil & Gas Geology, 2015, 36(4): 681-687. doi: 10.11743/ogg20150419

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高温高盐油藏二次开发深部调驱技术与矿场试验

Deep profile correction for redevelopment of high-temperature and high-salinity reservoirs and pilot test

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