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AmerAha, Inc. MWB-2 DnlGng ana Completion Report <br />:~ graphic summary of gross lithology variations in ~tWE3-2 between 1.095 and 1.398 feet is <br />shown in Figure 6, which is based on data from Table 3. For this figure. Lithology 5 (volca»ic <br />tufll is not included because this rock type makes up only trace amounts of the total stratigraphic <br />section.:~lso shown in Figure 6 are estimated oil-contem (gpt) values, as defined by the general <br />color of the rotary drill cuttings (shades of darkness between light bro++•n, gray, dark brown and <br />black. Light-colored cuttings have lower kerogen contents than those with darker huts. <br />Estimated shale-oil data also are included in fable 3. <br />^ Phi\F:TR:11'fON R.•~TES <br />' Pcnctratian-rate data were collected by Lang personnel bet+vecn depths of 35 and 1.275 feet <br />I ahle 2). Additional penetration rate data, which +vere collected by personnel from Daub & <br />~;sociates. Inc.. for the inten~al bct+veen 1.275 and 1.398 feet, can be found m Table I. In <br />,hlc I .the elapsed time for drilling a 20-Coot rod length (or shorter intcn•all includes the time <br />' ir, make the connection and to collect water-discharge and,'or water-geochemistry data: thus, the <br />~cnctration-race numbers arc "collective." In Table 2. the elapsed time is broken down into actual <br />' ,frilling time and the time to make a connection, plus +vater sampling and maintenance time. <br />I'~netration-rate data from fables I and 2 arc summarized graphically in Figure G. As <br />l~~,umcnted in Figure G. actual penetration rates during drilling of the 99•inch•diameter !eg <br />_i~ to I,?75 fectj of the hole ranged from 8 0 to 80.0 ft,'hr, and averaged 41.E ft~ttr. the <br />' hcnetration-rate for the 4g-inch-diameter Icg o1'thc hole 1.1.375 to 1,398 feet) was 10.2 ti/ty. <br />h;ncd on one measurement. <br />pverall, the collective and actual penetration rates progressively decreased down hole, especially <br />below about 520 Icel. At this depth there was a significant increase in the amount of <br />groundwater encountered (ZO gpm progressively up to 210 gpm discharge), and the beds of oil <br />shale penetrated were more resistnnt. <br />.1 <br /> <br />_.' <br /> <br /> <br />