Study on Method of Determining the Safe Operation Window of Drilling Fluid Density with Credibility in Deep Igneous Rock Strata

<div>Probability distribution of drilling fluid density in leakage layers of adjacent wells of SHB well. (a) Permian. (b) Silurian. (c) Ordovician Sangtamu layer. (d) Lower layers of Ordovician Sangtamu layer.</div>

Mathematical Problems in Engineering

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Figure 5

Figure 5: Study on Method of Determining the Safe Operation Window of Drilling Fluid Density with Credibility in Deep Igneous Rock Strata 