Third annual report of the State Oil and Gas Supervisor of California for the fiscal year 1917-1918 : covering operations of the Department of Petroleum and Gas of the State Mining Bureau . 5urfacec;Pm\. Sketch ShowingPENETRATION OF MUD FLUIDIn V3rioU5 formations ByJohn A. Pollard Im.;. I. 86 SlATIi OHi AND GAS SUPERVISOR. to tlip south. Roughly speaking, in Well No. 7, which was approximately350 feet south, in May, 1917, the oil production was only three barrelsper clay, the water running from 90 per cent to 98 per cent. The mud-ding off of Well No. 8 was completed in the month of July, 1917,
Third annual report of the State Oil and Gas Supervisor of California for the fiscal year 1917-1918 : covering operations of the Department of Petroleum and Gas of the State Mining Bureau . 5urfacec;Pm\. Sketch ShowingPENETRATION OF MUD FLUIDIn V3rioU5 formations ByJohn A. Pollard Im.;. I. 86 SlATIi OHi AND GAS SUPERVISOR. to tlip south. Roughly speaking, in Well No. 7, which was approximately350 feet south, in May, 1917, the oil production was only three barrelsper clay, the water running from 90 per cent to 98 per cent. The mud-ding off of Well No. 8 was completed in the month of July, 1917, andin August Well No. 7 came up in its production of oil to 20 barrels perday, and in December to 22 barrels per day, and in January and Febru-ary this year 22 and 30 barrels per day, respectively, with an appreciabledecline in water. Well No. 6, which was the next one south of Well , showed a decline in oil from 40 to 45 barrels to 12 barrels during theperiod when we believed that water was infiltrating into the oil sandsin Well No. 8, and in Septeml)er,. 1917, Well No. 6 had increased itsproduction to 20 barrels of oil per day with an appreciable decline inwater, and in October the product
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