专利名称：Method of drilling using a sized barite as a
weighting agent for drilling fluids
发明人：Jarrod Massam,Neale Browne,Mukesh
Kapilla
申请号：US11145054
申请日：20050603
公开号：US07176165B2
公开日：
20070213
专利内容由知识产权出版社提供
专利附图：
weight和weight的区别摘要：An additive that increases the density of fluids containing a sized barite
weighting agent. The wellbore fluid has rheological properties comparable to a
conventional wellbore fluids but does not exhibit problems with sag and resulting variations in density. An illustrative embodiment is directed to a method for making the sized barite weighting agent and a method for using such sized barite weighting agent in a wellbore fluid. In one preferred embodiment the sized barite weighting agent has a particle diameter between 4 μm to 15 μm In another preferred embodiment, the additive has a D(by weight) of approximately 1 μm to 6 μm. In another preferred embodiment the additive has a D(by weight) of approximately 4 μm to 8 μm. The additive may be used in any wellbore fluid such as drilling, cementing, completion, packing, work-over (repairing), stimulation, well killing, and spacer fluid.
申请人：Jarrod Massam,Neale Browne,Mukesh Kapilla
地址：Aberdeen GB,Houston TX US,The Woodlands TX US
国籍：GB,US,US
代理机构：M-I L.L.C.
代理人：Carter J. White
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