发明名称 |
High Performance Drilling Fluids with Submicron-Size Particles as the Weighting Agent |
摘要 |
Drilling fluids comprising a carrier fluid; a weighting agent that comprises sub-micron precipitated barite; a particle having a specific gravity of greater than about 2.6; and, a bridging agent that is not the submicron-precipitated barite or the particle. The weighting agent has a particle size distribution such that at least 10% of particles in the sub-micron precipitated barite have a diameter below about 0.2 microns, at least 50% of the particles in the sub-micron precipitated barite have a diameter below about 0.3 microns and at least 90% of the particles in the sub-micron precipitated barite have a diameter below about 0.5 microns. The particle has a specific gravity of greater than about 2.6 is not sub-micron precipitated barite. The ratio of the sub-micron precipitated barite to the particle is about 10:90 to about 99:1. The bridging agent comprises a degradable material. |
申请公布号 |
US2012295821(A1) |
申请公布日期 |
2012.11.22 |
申请号 |
US201213534347 |
申请日期 |
2012.06.27 |
申请人 |
ZHANG YING;HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
ZHANG YING |
分类号 |
C09K8/04;C09K8/26;C09K8/32 |
主分类号 |
C09K8/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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