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10 Cards in this Set
- Front
- Back
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Deep water cementing objectives
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short woc, hydraulic seal, long term durability, structual support
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deep water problems
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shallow water flow, gas, low temperatures, risk of losses in shallow strings
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control shallow water flow
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identify shallow water flow zones (seismic data) drill pilot holes (MWD ,LWD) Best Drilling Practices (Optimize hole size and drilling fluids)
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DeepCem Additives
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D186, D186
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Density/Temperature Range (DeepCrete)
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8-13.5 lb/gal 40-80F
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4 Consequenses of gas migration
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poor zone isolation, blow out, repair, environmental damage
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3 paths for gas migration
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channel (poor mud removal)
invasion during setting (slurry design) cement set failure (temperature) |
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CHP
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Critical Hydration Period
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PDL
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Pressure Decline Limit
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4 Phases of cement
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liquid, gelation, hydration, set
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