二元体系与油层渗透率的匹配关系——以克拉玛依油田七中区克拉玛依组下亚组砾岩油藏为例

doi:10.7657/XJPG20200508

新疆石油地质 ›› 2020, Vol. 41 ›› Issue (5): 565-570.doi: 10.7657/XJPG20200508

二元体系与油层渗透率的匹配关系——以克拉玛依油田七中区克拉玛依组下亚组砾岩油藏为例

聂小斌¹(), 李织宏¹, 栾和鑫¹, 魏凯², 张莉伟², 王健²

1.中国石油新疆油田分公司 a.实验检测研究院;b.中国石油天然气集团公司砾岩油气藏勘探开发重点实验室;c.中国石油天然气集团公司油田化学重点实验室新疆油田分研究室,新疆克拉玛依 834000
2.西南石油大学油气藏地质及开发工程国家重点实验室,成都 610500

收稿日期:2020-01-24 修回日期:2020-05-18 出版日期:2020-10-01 发布日期:2020-10-10
作者简介:聂小斌（1968-）,男,重庆人,高级工程师,硕士,油气田开发,（Tel）0990-6886571（E-mail）nxb@petrochina.com.cn
基金资助:
国家油气重大专项(2016ZX05010-004);中国石油科技重大专项(2017E-04-06)

Investigation on How Binary System Matches with Reservoir Permeability: A Case Study of the Conglomerate Reservoir in Lower Karamay Formation in District Qizhong, Karamay Oilfield

NIE Xiaobin¹(), LI Zhihong¹, LUAN Huoxin¹, WEI Kai², ZHANG Liwei², WANG Jian²

1. PetroChina Xinjiang Oilfield Company, a.Research Institute of Exploration and Detection; b.Key Laboratory of Conglomerate Reservoir Exploration and Development; c.Xinjiang Branch, CNPC Key Laboratory of Oilfield Chemistry, Karamay, Xinjiang 834000, China
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2020-01-24 Revised:2020-05-18 Online:2020-10-01 Published:2020-10-10

摘要/Abstract

摘要：

克拉玛依油田七中区油层气测渗透率主要分布在28.8~300.0 mD,渗透率级差大,部分区域存在高渗窜流通道。在二元体系驱先导试验过程中,由于对二元体系与储集层物性的匹配关系认识不清,部分井组油层堵塞,油井产液能力大幅下降,亟需确定二元体系与油层渗透率的匹配关系。针对扩大试验区的油藏特征,利用不同渗透率的岩心开展二元体系注入性实验,根据阻力系数、残余阻力系数和黏度损失率,进行注入性综合评价。结果表明,储集层气测渗透率不大于30.0 mD时,低分子量10~50 mPa·s、中—高分子量10~20 mPa·s的二元体系注入性好;气测渗透率为30.0~100.0 mD时,适合注入低—中分子量10~50 mPa·s、高分子量10~35 mPa·s的二元体系;气测渗透率为100.0~300.0 mD时,低—高分子量10~50 mPa·s的二元体系注入性皆宜。

关键词: 克拉玛依油田, 砾岩油藏, 二元体系, 聚合物, 表面活性剂, 分子量, 渗透率, 阻力系数, 残余阻力系数, 注入性评价

Abstract:

The reservoir permeability obtained from mud log in District Qizhong of Karamay oilfield is mainly distributed between 28.8 and 300 mD. The permeability contrast is large and channeling is serious in partial zones. Pilot tests on binary flooding found some wells blocked and the production capability reduced greatly, so it was urgent to understand how the binary flooding system can well match with the reservoir properties. Binary flooding experiments were performed on cores with different permeabilities, and the results were evaluated in resistance coefficient, residual resistance coefficient and viscosity loss rate. It is concluded that the binary systems with low or medium to high molecular weight (10 - 50 mPa·s and 10 - 20 mPa·s, respectively) are applicable for the reservoirs with the permeability not more than 30.0 mD, and those with low to medium (10 - 50 mPa·s) and high molecular weight (10 - 35 mPa·s) are applicable for the reservoir with the permeability of 30.0 to 100.0 mD, and those with low to high molecular weight (10 - 50 mPa·s) for the reservoir with the permeability of 100.0 to 300.0 mD.

Key words: Karamay oilfield, conglomerate oil reservoir, binary system, polymer, surfactant, molecular weight, permeability, resistance coefficient, residual resistance coefficient, injectivity evaluation

中图分类号:

TE357.46

聂小斌, 李织宏, 栾和鑫, 魏凯, 张莉伟, 王健. 二元体系与油层渗透率的匹配关系——以克拉玛依油田七中区克拉玛依组下亚组砾岩油藏为例[J]. 新疆石油地质, 2020, 41(5): 565-570.

NIE Xiaobin, LI Zhihong, LUAN Huoxin, WEI Kai, ZHANG Liwei, WANG Jian. Investigation on How Binary System Matches with Reservoir Permeability: A Case Study of the Conglomerate Reservoir in Lower Karamay Formation in District Qizhong, Karamay Oilfield[J]. Xinjiang Petroleum Geology, 2020, 41(5): 565-570.

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二元体系与油层渗透率的匹配关系——以克拉玛依油田七中区克拉玛依组下亚组砾岩油藏为例

Investigation on How Binary System Matches with Reservoir Permeability: A Case Study of the Conglomerate Reservoir in Lower Karamay Formation in District Qizhong, Karamay Oilfield

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