储层友好型钻井液用超微四氧化三锰  

Reservoir Friendly Ultra-fine Manganese Tetroxide for Drilling Fluids

作　　者：王龙[1,2] 方静[1,2] 董秀民 王金树 方俊伟[1,2] 耿云鹏[1,2] 张建军[1,2] 徐同台 WANG Long;FANG Jing;DONG Xiumin;WANG Jinshu;FANG Junwei;GENG Yunpeng;ZHANG Jianjun;XU Tongtai(Research Institute of Petroleum Engineering,Northwest Oilfield Branch Company,Sinopec,Urumqi,Xinjiang 830011;Key Laboratory for Enhanced Oil Recovery in Fractured and Vuggy Reservoirs,Sinopec,Urumqi,Xinjiang 830011;Hebei Petroleum University of Technology,Chengde,Hebei 067000;Beijing Shidahuyang Petroleum Science-Tech Development Company Ltd.,Beijing 102200)

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,乌鲁木齐830011 [2]中国石化碳酸盐岩缝洞型油藏提高采收率重点实验室,乌鲁木齐830011 [3]河北石油职业技术大学,河北承德067000 [4]北京石大胡杨石油科技发展有限公司,北京102200

出　　处：《钻井液与完井液》2023年第4期467-474,共8页Drilling Fluid & Completion Fluid

基　　金：中石化科研项目“顺北一区5号断裂带提质提速钻完井技术研究”(P20002)。

摘　　要：在顺北油田深井、超深井钻井中,重晶石加重高密度钻井液体系存在流变参数调节难、沉降稳定性差、储层固相颗粒损害严重等问题。国外微锰(Micromax)在钻井液中的性能表现良好,但其技术垄断和高使用成本限制了其在国内推广应用。为研发高性价比国产微锰产品、构建储层友好型钻井液体系,采用锰矿法制备出钻井液用微锰(DFMT01),并进行结构表征和性能评价,测试了顺北区块高密度聚磺钻井液体系的性能及泥饼酸溶效果,讨论了含锰废液的循环利用。结果表明,DFMT01理化性质良好,密度大于4.7 g/cm^(3),酸溶率大于99%,D_(50)为1.17μm,颗粒球形度为0.967,均与国外同类产品相当;该产品加重的聚磺钻井液体系在流变性、滤失性、沉降稳定性、冲蚀性和储层保护特性均达到或超过Micromax加重体系。确定了“碳酸钙中和沉淀-硫酸回收锰离子-混凝法处理废水”处理高浓度酸性含锰废液的组合工艺,处理后水中锰的质量浓度为0.45 mg/L、固体悬浮物为10 mg/L,达到一级标准要求,可实现DFMT01生产、使用和处理的闭环利用。该产品性能优良,成本低,具有非常广阔的推广应用价值。High density drilling fluids weighted with barite were used in deep well and ultra-deep well drilling in the Shunbei block.Several problems were found with these drilling fluids during drilling,such as difficulties in maintaining mud rheology,poor settling stability as well as reservoir damage by the solid particles from the drilling fluids etc.Micromax as a weight material has been reported in dealing with these problems,but the use of Micromax in China has been limited because of technical monopolization and high cost.A new drilling fluid micro-manganese weighting additive DFMT01 was developed using the“manganese ore method”.As a cost-effective domestic micro-manganese product,DFMT01 was used to formulate reservoir protective drilling fluids.The molecular structure of DFMT01 was characterized,and the performance of DFMT01 was evaluated in the high density sulfonated drilling fluids used in the Shunbei block.The results of field application of DFMT01 show that it has good physical and chemical properties.DFMT01 has a density of 4.7 g/cm3,an acid solubility of at least 99%,a D50 of 1.17μm and particle sphericity of 0.967,all these properties are comparable to the equivalent products from abroad.Drilling fluids weighted with DFMT01 have rheology,filtration property,erosion property and reservoir protective capacity equal to or better than those of the drilling fluids weighted with Micromax.A“neutralize to precipitate calcium carbonate-recover manganese ions with sulfuric acid-coagulate to treat the waste water”method was used in the treatment of high concentration acidic waste liquids containing manganese.Using this method,waste waters after treatment has mass concentration of manganese of 0.45 mg/L and SS of 10 mg/L,reaching the requirement of the first-level standard.The waste water treatment method can be used in the manufacturing,using and treatment of DFMT01 as a closed loop.DFMT01 is a weighting material having excellent property,low cost and very broad promotion and application prospects.

关 键 词：超微四氧化三锰 高密度钻井液 流变性 沉降稳定性 储层保护 

分 类 号：TE254.4[石油与天然气工程—油气井工程]