钻井液与完井液2018，Vol.35Issue(2)：68-72,5.DOI:10.3969/j.issn.1001-5620.2018.02.011
微乳液油基钻井液清洗液的研制与应用
Development and Application of Oil Base Mud Cleansing Fluid
卜继勇 1赵春花 2童坤 3孙德军3
作者信息
- 1. 中海油田服务股份有限公司油田化学事业部印尼作业公司,河北燕郊 065201
- 2. 中海油田服务股份有限公司油田化学研究院,河北燕郊 065201
- 3. 山东大学胶体与界面化学教育部重点实验室,济南 250100
- 折叠
摘要
Abstract
A thermal stable salt-resistant oil base mud cleansing fluid, PF-MOCLEAN, has been developed with a nonionic surfactant Brij A and an ionic surfactant SJB, in an effort to overcome the problems of narrow range of applicable temperature and of losing efficacy in high salinity environment when micro emulsion oil base mud cleansing fluid is used. Laboratory study has been done on the effects of the quantity ratio and concentrations of the two surfactants on the cleansing efficiency of PF-MOCLEAN, and the optimum composition of PF-MOCLEAN was determined, that is, SJB : Brij A = 2:1, and the total concentration of the two surfactants is 60％. PF-MOCLEAN, when in contact with oil base muds, automatically solubilizes oil phases to form a micro emulsion with ultra-low surface tension, high solubilizing power and high rate of diffusion. It effectively cleans off 95％ oil base muds adhered on the surfaces of casing and borehole wall in a temperature range of 40-120 ℃ and in high salinity environment, meanwhile turns the surfaces of casing and borehole wall from being hydrophobic to hydrophilic, which is beneficial to reservoir protection and well cementing job. PF-MOCLEAN has been effectively used in South China Sea, showing prosperous future of application.关键词
油基钻井液/清洗液/微乳液/耐温/高盐/表面活性剂Key words
Oil-based drilling fluid/Cleansing fluid/Micro emulsion/Thermally stable/High salinity/Surfactant分类
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卜继勇,赵春花,童坤,孙德军..微乳液油基钻井液清洗液的研制与应用[J].钻井液与完井液,2018,35(2):68-72,5.
