--> --> Figure 6. Subsurface formation pressures. The blue line represents a hydrostatic pressure gradient. Indices indicate type of fluid recovery: M = mud, W = water, GM = gas & mud, OW = oil and water, U = unknown.

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fig06

Figure 6. Subsurface formation pressures. The blue line represents a hydrostatic pressure gradient. Indices indicate type of fluid recovery: M = mud, W = water, GM = gas & mud, OW = oil and water, U = unknown.