Page 19 - Drilling a Straight Hole

DRILLING A STRAIGHT HOLE

Petroleum Extension-The University of Texas at Austin
rotating-blade, 80–81, 80f, 81f totco ring, 94
rubber finger, 94f transitional drilling assembly, 69f
shrunk-on sleeve, 81f, 82 transition zone, drill collars and, 48
threaded-sleeve, 81f, 82 tripping out of the hole, 83
undergauge, 59 trips, 67
wall contact area and, 80 tubing, 18
welded-blade, 49f, 81, 81f tubing leaks, 20
stabilizer blades, 79f tubulars, 18
standard drill collars, 61–73 tungsten carbide inserts, 80, 81f, 84
boxes, pins and, 65
buoyancy factor of, 71 undergauge bit, 75
circulation rates and, 63 updip, 24
drill collar size/weight, 61–65, 62f upsets, 18
hardbanding, 65, 66f
inside diameter (ID), 61, 63, 63f, 66 Val Verde, 35
large, 67, 68t vibration dampener(s), 55f, 69f
large-bore, 63 about, 86
nonmagnetic, 65 bit cutters and, 52
outside diameter (OD), 61, 63, 63f, 65, 66, 67 cutaway of, 87f
safety factor for, 72–73 PHA and, 50
selection of, 66–68
slips, elevators and, 65, 65f washover pipe, 67
threaded connections of, 67 washpipe
weight and, 64t, 71–73 clearance and, 47
WOB and, 71, 73 drill collar size and, 68t
stator wear-pad stabilizer, 81f, 82, 83
cross-section, 58f weight on the bit (WOB)
rotor and, 55f, 56 doglegs and, 7, 7f, 59
steerable systems, 6 drill collars and, 71, 73
steering tool, 98 pendulum assembly and, 39, 42
straight hole(s) percussion tools and, 36
cone and, 12, 12f reduced, 7, 7f
defined, 21 ROP and, 28
qualifications for, 11 welded-blade stabilizers, 81, 81f
specifications, 8f well(s)
WOB and, 59 control, 31f
straight-hole field case, 54f horizontal, 2
string shots, 63 near-vertical, 71
stuck drill pipe observation, 20
differentially stuck pipe, 78–79 wellbore(s). See also borehole(s)
doglegs, keyseats and, 20, 21–22 curved, 17, 17f
sucker rod strings, 18 deviation and, 11
sucker rod wear, 20 intersection of, 1
Sun Oil Company, 4, 10 keyseats and, 16
Surwell well-surveying instrument, 4, 5f wellbore survey tools, 3–6
about, 10
TD. See Total Depth (TD) acid bottle, 3–4, 3f
tensile strength, 17 gyroscopes, 4, 4f
tensile stress, 18 hole deviation and, 3
Texas, 6, 7 ink-bottle survey instrument, 4, 4f
T.H. Hill Associates, Inc., 18 steerable systems, 6
threaded-sleeve stabilizer, 81f, 82 Surwell well-surveying instrument, 4, 5f
tongs, 82 wireline, 3f, 4, 20
tool joint, 16 wireline operation, 98
torque, 56 WOB. See weight on the bit (WOB)
Total Depth (TD), 11 Woods, Henry, 40
total hole angle. See restricted total hole angle workover phase, 7

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