High Temperature Resistant Modified Bitumen For Drilling Fluid
Modified bitumen is used in drilling fluids to seal formation micro-cracks, prevent exfoliative shale from collapsing, and has good lubrication and anti-collapse effects. Modified bitumen also has the effects of resisting high temperatures and reducing fluid loss, and has special features in inhibiting the hydration expansion of mud shale. The effect can be directly applied to various water-based drilling fluid systems to reduce filtration loss and prevent well wall collapse. Modified bitumen has no fluorescence display and high resistivity, which is conducive to obtaining complete and accurate electrical geological data from exploration wells. Its performance is stable. The mud preparation process is simple and easy to operate.
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Scope of application: |
various water-based drilling fluids
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Function: |
plugging, shale suppression, reducing water loss
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Mechanism: |
Through surface modification, the asphalt is uniformly dispersed in the water-based drilling fluid, and deformed under high temperature and high pressure to form a film to seal the gap and reduce the fluid loss.
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Applicable well temperature: |
can resist temperature 150℃
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Recommended dosage: |
2-4% (mass fraction)
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