Page 14 - Drilling a Straight Hole

INDEX

Petroleum Extension-The University of Texas at Austin
Index

▼
▼
▼

Throughout this index, f indicates a figure and t bottomhole assembly (BHA). See also packed-hole
indicates a table on that page. assembly; packed-pendulum assembly; pendulum assembly
changing, 53
abrasive formation, 37 configuration of, 9, 32
acid bottle, 3–4, 3f formation dip and, 53f
adjustable kickoff (AKO), 58, 58f hole enlargement and, 49
air percussion tools MWD and, 99
hammer bits and, 29–30, 30f pendulum effect and, 37
shallow surface formations and, 36 predicted performance of, 53f, 54f
AKO. See adjustable kickoff (AKO) stabilizers and, 79
American Petroleum Institute (API), 16, 71 types of, 37, 59
angle, change in, 11, 12, 12f boxes, 65
angle buildup, 74 box tool joint, 70f
break out, 67
angle-drop rates, 42, 43t buoyancy factor
annular clearance, 48 drill collars and, 71
API. See American Petroleum Institute (API) mud weights and, 72t
Appalachian Basin, 31f, 35 bushing, 83
Arkoma Basin, 31f, 35
azimuth California, 5, 5f, 6
defined, 3, 95 casing(s)
readings, 65
doglegs and, 7
problems with, 20
baffle plate, 93f, 94–95, 94f casing shoe, 20
bedding planes, 24, 24f cement circulation, sub-optimal, 16, 20, 22
BHA. See bottomhole assembly (BHA) centralizers, 20
bit(s), 26f, 55f. See also weight on the bit (WOB) chalk, 25f
cone offset and, 29, 29f completion phase, 7
drift and, 9, 9f compressive strength of rocks, 25, 25f
dull or balled-up, 28, 28f cone, 11, 12, 12f
formation effects and, 23 cone offset, 29, 29f
hammer, 29, 29f, 31, 31f contract deviation clauses, 7–10, 8f
OD and, 66 controlled deviation drilling, 11
PDC, 29, 29f, 35 controlling hole deviation
stabilized/unstabilized, 27, 27f drilling reports and, 33, 34f
straighter holes and, 30 starting straight, 35–37
undergauge, 75, 84 control wells, 31f
bit balling, 28 core barrel overshot, 93, 93f
bit cutters. See cutter(s) corrosion, casing, 20
bit records, 28–29 crooked hole(s)
blowout(s), casings and, 20 about, 10
bore(s)/boreholes. See also wellbore(s) bits and, 28, 28f
ideal, characteristics of, 12 cost and, 1
OD/ID and, 61 drill string and, 27, 27f
tools and, 63 footage and, 1, 2f
borehole survey(s), 6, 7 large drill collars and, 67
borehole surveying instruments. See wellbore survey tools PHAs for, 51f

137