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• best gravity meters available for this kind of service but do not appear to be <br />adequate for our process. Instead, hand gravities taken by the operators have <br />proven to be the more accurate and dependable. <br />In addition to the metering taking place at each of the well heads, an air-water <br />interface is maintained between the 7" liner and 9 5/8" casing during production, <br />and the annulus between the 13 3/8" and 9 5/8" is kept full of drilling mud. The <br />record of mud taken to fill the annulus is shown in Table 4-2. Note the decrease <br />in the volume of mud needed to bring the annular level to surface. <br />Injection into 90-5 commenced on 2/20/91. On 4/1191, the suspended casing <br />liner in 90-5 was rotated to reposition the distributor. The following week (4/8/91) <br />the distributor was surveyed and repositioned after laying down 2 joints 180 feet) <br />• of 7" casing. These steps were taken in hopes of reducing the quantity of halite <br />dissolving into the liquor stream. In addition to the increasing halite problem, the <br />liquor stream was not approaching saturation as needed. To increase the rate of <br />saturation, the. distributor was pulled back an additional 10 joints (432.49'1: <br />repositioning the end of the distributor at 2574' ground level (GL). Total drilled <br />depth for this well is 3259' from kelly bushing; or 30' to 50' past the vertical <br />recovery well. With a distance of over 600' from the distributor to the vertical <br />recovery well, the greater surface area should have increased the saturation rate. <br />But, with only an 8 3/4" hole creating the additional surface area, no significant <br />increase in saturation rate was observed. As of the plant shutdown in August, the <br />recovery liquor had yet to reach saturation. Saturation will be more dependent on <br />surface area created by tonnage extracted rather than the small area created when <br />the distributor is pulled back. This, however, will require more time to develop a <br /> <br />25 <br />