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6. <br /> #. l r kyr C P' - [• - ' <br /> state of !VP01111ng <br /> 4 <br /> A `fir iit RIND Q�a �Coii�ez'�ltr�4tl �QII1Zt� t011 :++ <br /> GOVERNOR ED 14ERSCHLER,CHAIRMAN _ <br /> y. <br /> COMMISSIONERS ' <br /> OSCAR E.SWAN GARY B.GLASS RICHARD S.CROSS BERN WHITTAKER <br /> STATE:OIL AND GAS SUPEAMOR <br /> �. p.F53y }� Dlr :, ., <br /> I DONALD B.BASKO <br /> pry , Av VARIANCE TO SEISMIC RULE 339 ' <br /> EXPERIMENTAL SEISMIC SHOT HOLE PLUGGING .MEfHQD <br /> x ; ;'•.z" , ` �; � ">. ` (COARSE, BENTONITE MATERIAL);- <br /> The <br /> ATERIAL)„The following requirements and guidelines will be followed: <br /> ..SPECIFICATIONS: <br /> Chemically unaltered„ sodium bentonite ,(coarse ground) <br /> t' Physical sizing 3/4” ;:maximum <br /> £pi 3/8 <br /> tI minimum <br /> ' Moisture content, no.t more„than:, 17% * 2 <br /> ` Should not contain more than 15% inert solids. in package <br /> , f <br /> r 'sl �,,,,A sales receipt 'indicating proof-of purchase., :seismic„company, and line number. <br /> >�2 a..Person or persons :who will supervise plugging operations. } <br /> 3. �lShooter.'s loge of blow-outs <br /> 4. .F If deemed necessary upon completion of &. seismic line',^a drill will be furnished <br /> «to redrill .a random shot hole to .the top of the bentonite material . <br /> EXPERIMENTAL .GUIDELINES FOR PRE-PLUGGING SHOT HOLES: 3: <br /> A a `ice Conventional drill , dry hole 7 Plug .'i n- compl i ante with. Rule 339. <br /> Conventionalydrill , wet ' hol e: Enough plugging material will be used to <br /> sri <br /> cover <br /> " existing water level no_ water- above final.: plug 'leveI ) , hole . cuttings from <br /> this depth to 3' below ground level , install anon-metallic plug with . approved <br /> identification, tamp remaining ;` 3with ,,,cuttings., and `.spread remaining cuttings <br /> within l” of ground level <br /> Au er drills or the injection of water during drilling operations - A <br /> � Aminimum of 100# of plugging „material • will be placed above the explosive charge <br /> k <br /> or every 50' of hole depth. (Hole alepth'1,150' use 300# °material ) . Backfill shat <br /> N �3hole with cuttings - from top of''bentonite plug to. 3+ . below ground level install <br />} hanon-metallic lug with a roved= identification and tamp remaining 3' . with hole <br /> P PP g <br /> cutt�ngs, .spread excess cuttings to within 1” of .ground level . <br /> � .s ,f5 `tip "���, ����—• _ . <br /> JIM <br /> - 777 tiyreCT r1RST STR1 FT P.0 BOX 2640,CASPER..WYOh.11NG 82602 (307)234.7147 <br />