Page 18 - Drilling a Straight Hole

INDEX

Petroleum Extension-The University of Texas at Austin
penetration rate downhole motors and, 59
limitation in deviation and, 8 stator and, 56, 57f, 58f
WOB and, 7
percussion tools. See air percussion tools safety factor, 72–73
Permian Basin, 31f sandline, 92
Petron, 89f shock sub/shock absorber. See vibration dampener(s)
pilot hole, 37 shrunk-on sleeve stabilizers, 81f, 82
pins, 65 sideload forces, 15
pin tool joint, 70f skidding the rig, 33
pipes. See drill pipe(s) slant holes, 58
plug-back operations, 8 slanthole lease violations, 6
polycrystalline diamond compact (PDC) bits, 29 slant rig, 11
production, problems with, 20, 22 sleeve breaker, 82
production phase, 7 slick line, 96
productive zone, 20 slip cuts, 18
pulling out of the hole, 15 slips, 65, 65f
slough, 20
rate of penetration (ROP) soft formations
air drilling and, 35, 36 drill collars and, 61, 62f, 74
WOB and, 28 hardfaced teeth for, 84
ream, 16 hole erosion and, 49
reamer(s), 79f offset ledges and, 25, 25f
BHAs and, 37 reamers and, 83
ghost, 83 wall contact area and, 79
pendulum effect and, 85, 85f washed-out, 42
rolling-cutter, 83–85, 84f spear point, 97f
reamer-stabilizer, 52f, 75–76, 76f spear point assembly, 94, 94f
record keeping, bits and, 28–29 Sperry, Elmer, Jr., 4
replaceable-blade stabilizer, 81f, 82 Sperry Gyroscope Company, 4, 10
reports, daily drilling, 34, 34f Sperry-Sun Well Surveying Company, 4
restricted rate of hole-angle change, 15–20 spiral drill collars
casing and, 20 differential sticking and, 77–78, 77f
cement circulation and, 20 filter cake and, 77, 78
dogleg limits/Grade-E drill pipe, 18, 19, 19f fluid velocities and, 49
doglegs and keyseats, 15–16, 15f spiral hole, 27, 27f
drill pipe failure, 17–19, 17f spud, 13
logging tools, wireline and, 20 square drill collars, 74–76, 74f
production problems and, 20 cross-section diameter, 75f
stuck drill pipe and, 20 reamer-stabilizers and, 75–76, 76f
restricted total hole angle soft formations and, 74
doglegs and, 14, 14f square, 49, 53
reasons for restriction, 13–14, 13f, 21 stabilizer(s), 79–83
rigs, hole deviation and, 1 bearing housing, 58f
rig site integrated drilling system, 89f BHAs and, 37
rock(s). See also formation(s) categories of, 79f, 80
compressive strength of, 25, 25f clearance and, 49
hard-rock country, 31f crooked hole tendencies and, 50
Rocky Mountains, 7 downhole mud motor assemblies and, 58f
roller cone bits, 29, 29f fulcrum, 56
roller reamer, 75, 76f integral-blade, 69f, 81f, 82
rolling-cutter reamer, 83–85, 84f nonrotating sleeve, 81f, 83
ROP. See rate of penetration (ROP) packed pendulum assembly and, 55f
rotary steerable systems, 6, 9 pendulum assembly and, 40, 42
rotating blade, 79f reamer-, 52f, 75–76, 76f
rotating-blade stabilizers, 80–81, 80f, 81f repairing blades of, 82
rotor replaceable-blade, 81f, 82

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