摘要
海上E油田某区块储层泥质细粉砂含量高、胶质沥青质含量高、稠油黏度大,前期开发存在产量下降快、生产压差大等问题,亟需开展防砂技术方案设计研究。利用耐高压稠油油藏控砂模拟实验装置模拟E油田稠油油藏地层砂和生产条件,针对3类筛管、2种陶粒,开展了防砂介质参数优化以及防砂方式对比评价实验,分析不同防砂方式堵塞机理,优化防砂技术方案。研究结果表明:不同防砂方式下分别存在单级桥架复合堵塞机制和多级桥架复合堵塞机制,前者防砂精度设计建议在常规设计基础上放宽1个级别,后者建议在前者防砂精度设计基础上再放宽1个级别;不同防砂方式对比及压裂充填等效评价实验结果得出压裂充填防砂效果最优、挤压充填次之。针对E油田高泥质高沥青质细粉砂条件,综合实验评价、产能评价结果,对于裸眼井优先推荐挤压充填防砂方式,其次为循环充填防砂;对于射孔井,优先推荐压裂充填防砂方式,兼顾增产效果,其次推荐挤压充填。本文研究成果可为E油田高泥质高沥青质稠油油藏防砂技术方案设计提供参考。
Reservoirs in a block of E oilfield have high argillaceous fine silt content, high colloidal asphaltene content and heavy oil viscosity. During the early development, there are problems such as rapid production decline and large production pressure difference, so it is necessary to carry out design research on sand control technology scheme. In this paper, sand control simulation experiment device for heavy oil reservoirs under high-pressure is used to simulate the formation sand and production conditions of E heavy oil reservoirs. Optimization of sand control medium parameters and the comparative evaluation of sand control methods are carried out on three types of sieve tubes and two kinds of ceramsite. The blockage mechanism of different sand control methods is analyzed, and the sand control technology scheme is optimized. The results show that there are single-stage bridge composite plugging mechanism and multi-stage bridge composite plugging mechanism under different sand control methods. For the former, the sand control precision design is suggested to relax one level on the basis of conventional design, and for the latter, it is suggested to relax one level on the basis of the sand control accuracy design of the former. The comparison of different sand control methods and experimental results of equivalent evaluation of fracturing filling show that the sand control effect of fracturing filling is the best, followed by extrusion filling. According to the conditions of high argillaceous and high asphaltene fine silt in E oilfield, and combined with the experimental evaluation and productivity evaluation results, for open-hole wells, extrusion filling sand control method is preferred, followed by cyclic filling sand control, and for perforated wells, the fracturing and filling sand control method is recommended preferentially while taking into account the effect of production increase, followed by extrusion filling. The achievements in this paper can be referenced for sand control technology design of high argillaceous and high asphaltene heavy oil reservoirs in E oilfield.
作者
胡泽根
战鑫杰
熊书权
董长银
张斌斌
李凡
黄有艺
王肇峰
陈琛
HU Zegen;ZHAN Xinjie;XIONG Shuquan;DONG Changyin;ZHANG Binbin;LI Fan;HUANG Youyi;WANG Zhaofeng;CHEN Chen(Production Optimization Division,China Oilfield Services Limited,Tianjing 300450,China;School of Petroleum Engineering,China University of Petroleum,Qingdao,Shandong 266580,China;CNOOC China Limited,Shenzhen Branch,Shenzhen,Guangdong 518000,China)
出处
《中国海上油气》
CAS
CSCD
北大核心
2022年第5期158-170,共13页
China Offshore Oil and Gas
基金
国家自然科学基金项目“非均质疏松砂岩储层水平井砂液(水)协同产出剖面动态演化机制及模拟(编号:52074331)”部分研究成果。
关键词
防砂方式
堵塞机制
压裂充填
产能评价
防砂技术方案
sand control method
plugging mechanism
fracturing filling
productivity evaluation
sand control technology scheme
作者简介
第一作者:胡泽根,男,工程师,2009年毕业于西南石油大学油气田开发工程专业,获硕士学位,现从事油气田防砂和控水完井工艺技术研究。地址:天津市滨海新区塘沽华山道450号(邮编:300450)。E-mail:huzg2@cosl.com.cn;通信作者:董长银,男,教授,博士生导师,2003年毕业于原石油大学(华东)油气田开发工程专业,获博士学位,现从事出砂与防砂、砂水协同控制、高效开采完井领域的研究工作。地址:山东省青岛市黄岛区长江西路66号(邮编:266580)。E-mail:dongcy@upc.edu.c。
