WorldWide Drilling Resource

Geologic Hazard Primer by Scott Cosby Th s month s art c e s a pr mer on geo og c hazards. In every job, there are hazards to be aware of. Th s s espec a y true n the dr ng ndustry. Hazards come w th many consequences, such as t me, money, property damage, and/or potent a persona safety ssues. Dr crews need to have a bas c understand ng of these hazards. F rst we def ne t, then exam ne examp es, and d scuss the need for a com- p ete s te nvest gat on. Ageoogc hazard s one of severa types of adverse geoogc cond t ons capabe of causng damage, or oss of property and fe. These hazards consst of immediate and gradual phenomena. Examples of the immediate phenomena include: e Ava anches e Earthquakes or se sm c events e Forest F res. e Lands des (one of the most common hazards n Ok ahoma) e Rock fa s, rock s des, and debr s f ows e Vo can c erupt ons, ahars (mov ng f ud mass of vo can c debr s and water), and ash fa s Examples of gradual phenomena include: e A uv a fans (e.g. at the ex t of canyons or s de va eys) e Ca dera deve opment (re ated to vo canoes) e Ground subs dence, sags, and s nkho es e L quefact on (sett ement of the ground n areas under a n by oose saturated sand/s t dur ng an earthquake event) e Shore ne and stream eros on e Therma spr ngs Some of these hazards are caused by man through the casua ocat on of deve opments or construct on n wh ch the cond t ons were not taken nto account. A deta ed reconna ssance and documentat on of a potent a dr s te s mperat ve to avo d these hazards dur ng dr ng, or n the future when the deve opment s comp ete. Consu t search eng nes for more nformat on on th s top c. Be sure to prov de n-house tra n ng on th s subject to a dr operators and crews on th s top c - they w be the f rst to encounter any geo og c hazards n the f e d! Scott Scott Cosby may be contacted via e-mail to michele@worldwidedrillingresource.com Crews working near a slide. )' ) % ) ' # *# $ ' : &4)1*4 *18*4 : : &4)1*4 *18*4 : : &4)1*4 *18*4 : : &4)1*4 *18*4 % ( ) ' ) '%# : &4)1*4 *18*4 : : &4)1*4 *18*4 : : &4)1*4 *18*4 : &4)1*4 *18*4 : &4)1*4 *18*4 ' $ + *#&( $ )% ! &4)1*4 *18*4: # #4 3 *: ! ! &4)1*4 *18*4 : # #4 3 *: ! ! &4)1*4 *18*4: 24 : 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : 4 4 8* 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : # #4 3 *:>> ! ! &4)1*4 *18*4 : #4 3 *:>> > ! ! ;)4&7 ( 4276 703 ? ;)4&7 ( 4276 703 ? ;)4&7 ( 4276 703 ? '%*) *#& * ") * *#&( : &52 73 *: ! ! : 9* 73 *: ! ! &4)1*4 *18*4 : #4 3 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &4)1*4 *18*4 : 73 *: ! ! &52 : 73 *: ! ! '#()'%$ $ % $ "% 6, "64**6 = 2(&,216&5 $" < 2745 &;5 & %**. = &: %&665 $" &1&)& 62 21)&; 4 )&; "** 274 %*' &+* 999 &4056421+0&(, 1* (20 0& ))4*55 &0( &4056421+0&(, 1* (20 46 SEPTEMBER 2016 WorldWide Drilling Resource ®