英文版钻井工程讲义3.pptVIP

PE3043-FALL/2002Schematic of Example Rig Circulating System for Liquid Drilling Fluids Circulating System Drilling mud travels: Steel tanks Mud pump Surface connection Contaminant-removal equipment Surface Annular Bit nozzle Bit Drillstring Circulating System Mud pump Mud pits Mud-mixing equipment Contaminant-removal equipment Mud Pump Mud Pump Mud Pump Forward Stroke Volume displaced (one stroke): Backward Stroke Volume displaced (one stroke): Pump Factorduplex Total volume displaced per cycle (two cylinders) Fp is commonly called the pump factor Pump Factortriplex three cylinders Pumps are rated for Hydraulic power Maximum pressure Maximum flow rate Hydraulic Power Units: pressurepsi Flow rategal/min Hydraulic Powerhp Example 1.3: Compute the pump factor in units of barrels per stroke for a double-acting duplex pump having: 6.5-inch linersdL 2.5 inch rodsdr 18-inch strokesLS a volumetric efficiency of 90%EV Solution: For a duplex pump, Converting to the field units Fp=1991.2 in.3/stroke x gal/231 in.3 x bbl/42 gal. = 0.2052 bbl/stroke Exercise: Compute the pump factor in units of barrels per stroke for a single-acting triplex pump using the data set shown in example 1.3 Contaminant-Removing Equipment Shale shaker Hydrocyclones and decanting centrifuges Schematic of hydrocyclone Decanting Centrifuge Schematic of Circulating System for Air Drilling Rotary System Swivel Kelly Rotary drive Rotary table Drillpipe Drill collars Rotary System Swivel Stabilizer Capacity and Displacement of Pipe Capacity of pipe Cross-sectional area of the pipe or annular expressed in units of volume per unit Length Displacement of pipe Cross-sectional area of steel in the pipe expressed in units of volume per unit Length Well Control System Detecting the kick Closing the well at the surface Circulating the well under pressure to remove the formation fluids and increase