By P. Skalle
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Extra info for Drilling Fluid Engineering [Exercises]
The resulting water activity for various concentrations of NaCl and CaCl2 are shown in Fig. 2. 69 by an electro hygrometer. Determine the concentration of calcium chloride needed in the water phase of the mud in order to have the activity of the mud equal to the activity of the shale. Figure 5-2: Water activity in calcium chloride and sodium chloride at room temperature. b) A core is taken from a swelling formation. Can you retrieve any useful information from its specific weight, useful with respect to avoid swelling while drilling through it?
OFU. Section wise The bit has 3 . 12/32” nozzles, and ρmud = 10 PPG while drilling in 8 200 ftMD. The following pump rates/pressures (which are within the operating flow rates) are recorded while the bit is close to bottom: qpump (GPM) pp (psi) 250 800 500 3000 The pump is characterized through: pmax = 3000 psi, Ep,max = 1000 Hp, qr = 240 GPM. Determine optimal pump parameters and nozzle size when applying BHHP (Bit Hydraulic HP) as the optimization criteria (maximize it). 9. 6 Hydraulic program.
Ann Shear-r. pipe Shear-r. ann. 0254 m 1 bar = 105 Pa 1cP = 10-3 Pas P = q*p 44 . Exercises within Drilling Fluid Engineering Solutions to Exercises in Drilling Fluid Engineering Solutions to Exercises in Drilling Fluid Engineering 1. Fluid Properties 2. Rheological models 3. Drilling fluid dynamics 4. Bit hydraulics 5. 1 Fluid loss control a) Filter loss can be optimized in three ways: 1. Make a good filter by including a wise range of particles in the mud (Bentonite, Barite, cuttings are already there.