106
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
延长油田油基钻井液废弃物回收处理技术
李红梅景丰赵毅马振锋陕西延长石油（集团)有限责任公司研究院
2017
摘要油基钻并液应用中产生的废弃物的高效处理难度大是制约其广泛应用的重要原因和难点
之一，针对油基钻并液技术难点，研发了高效的岩屑除油剂(CYJ-1)及针对废弃油基钻并液的破乳配方。研发的除油剂为一种润湿剂，通过改变岩屑表面润湿性实现除油。实验结果表明，其除油率高达 98.27%，除油效果良好。通过破乳实验确定了破乳剂单剂种类及复配比例，并确定了破乳剂配方的最佳反应温度、反应时间、离心速度、离心时间等条件。将研究成果在现场云页平1并进行了初步试验。现场试验表明，CYJ-1及废弃油收油剂配方效果良好，处理效率高，实现了基油的回收利用，固相排放达到要求，有效降低了钻井液成本，减少了环境污染。
关键词含油岩屑除油剂废弃油基钻井液
中图分类号：TE992
文献标志码：A
回收油
DOl; 10.3969/j.issn, 10073426.2017.01.021
Recoverying technology of oil-based drilling fluids wastes in Yanchang oilfield
Li Hongmei, Jing Feng, Zhao Yi, Ma Zhenfeng
Research Institute of Yanchang Petroleum (Group) Co,, Ltd, Xi'an, Shaanzi, Chind
Abstract: The great difficulty with managing the wastes efficiently was one of the critical factors to restrict the wide application of the oil based drilling fluids. In view of the technical difficulties with the oil-based drilling fluids technology, a highly efficient degreasing agent for cuttings and demulsifier formulations for waste oil was developed. As a wetting agent, degreasing agent could remove the oil by changing the surface wettability. The experimental results showed that the oil removal rate could reach 98. 27% to prove that the promising degreasing effect. The type of the demulsifiers and compound proportion were determined through demulsification experiments to achieve the optimum oil recovery, as well as the optimum reaction temperature, reaction time, centrifugation speed and centrifugation time of the demulsifier formulations, Based on the results of this study, a preliminary field test was carried out in Yunyeping 1 well. Field test showed that the effects of degreasing agent CYJ-1 and demulsifier formulations were satisfactory. They had high processing efficiency, realized the based oil recycling, met the requirement of the solid phase emissions, and effectively reduced the drilling cost and environment pollution.
Key words: oil bearing debris, degreasing agent, waste oil-based drilling fluid, recovered oil
随着我国油气勘探开发的发展，多分支井、水平井、页岩气井、海外油气井等复杂情况井钻探越来越多，井壁稳定的间题尤为突出，油基钻井液技术受到越
来越多的重视[1-8}。因此，相应产生了大量的含油钻屑及废弃油基钻井液。目前，国内外油基钻井液废弃物处理技术主要有：热蒸馏法、溶剂萃取法、超临界流体
基金项目：国家863计划资源环境技术领域页岩气勘探开发新技术项目“页岩气钻完并及储层评价与产能预测技术研究”(2013AA064501)。
作者简介：李红梅(1981一），女，山东青岛人，工程师，硕士，现就职于陕西廷长石油（集团)有限责任公司研究院，主要从事钻井液工艺技术研究工作，E-mail；lihmzj@163.com
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