污泥调剖技术的研究与应用
2015-10-21沈聪
沈聪



摘 要:含油污泥是油田开发过程中产生的污染之一,辽河油田每年产出几万吨的含油污泥。针对污泥无害化处理及调剖需求,通过对污泥组成分析,提出对含油污泥进行化学剂处理,形成污泥调剖剂,并开展了现场试验。现场试验表明,该技术能较好地解决污泥污染与利用问题,能有效地封堵高渗透地层,提高注入水波及体积,有显著的社会效益和经济效益。
关 键 词:含油污泥;污泥调剖; 固相颗粒;水井调剖;辽河油田
中图分类号:TE 357 文献标识码: A 文章编号: 1671-0460(2015)06-1307-02
Research and Application of Sludge Profile Control Technique
SHEN Cong
(China University of Petroleum (Beijing), Beijing 102249,China)
Abstract: The oily sludge is one of the pollution generated during the development of oilfield; Liaohe oilfield produces tens of thousands of tons of oily sludge every year. For the sludge harmless treatment and profile control application, based on analysis of composition of sludge, its pointed out that the oily sludge can be treated by chemical method to produce sludge profile control agent, and the field test was carried out. The field test shows that, this technology can solve the problem of sludge pollution, and can effectively block the high permeability formation to improve the injection profile and volume, so remarkable social and economic benefits can be obtained.
Key words: Oily sludge; Sludge profile control agent; Solid phase particles; Water well profile control; Liaohe oilfield
自注水是油田開发的主要方式之一,由于油层的非均质性,注入水通常有80%~90%被高渗透层所吸收,致使注水剖面很不均匀。为了发挥中低渗透层的产能,提高注入水的波及系数,就必须对高渗透层进行一定程度的堵塞,使后续的注入水进入中低渗透层,通常向注水井中注入的化学药剂称为调剖剂。
辽河油田稠油油泥是一种由稠油、细微泥砂、水及少量化学药剂和部分工业杂质形成的多相、多物质混合物,性质稳定,油、泥砂、水、杂质等组分分离困难。由于油泥产生途径不同,油泥组份和性质差异较大,因此更增加处理工艺和广泛适应性上的困难。辽河油田每年新产生的原生油泥约几万吨,呈粘稠膏状体或较粘流体,含水率在85%~95%,给油泥处理的拉运、储存等环节造成很大麻烦,如果不及时处理,则会造成堆积,占用土地资源,甚至会影响到油田的正常生产。如果管理不善,还会对周围环境造成污染。……
