Laserfiche WebLink
Shell Exploration & Production <br />Mr. Travis Marshall <br />Mr. David Bird <br />Division of Reclamation, Mining and Safety <br />1313 Sherman St., Room 215 <br />Denver CO 80203 <br />May 11, 2011 <br />Shell Exploration & <br />Production Company <br />3737 Bellaire Boulevard <br />Houston, Texas 77025, U.S.A. <br />P.O. Box 481 <br />Houston, Texas 77001-0481, <br />U.S.A. <br />Internet <br />http://www.shell.com/ep <br />Subject: Response to Comments, NOI # P-2010-026, Shell Multi-Mineral RDD <br />Lease <br />Dear Mr. Marshall and Mr. Bird, <br />Thank you for your questions and comments on Shell's Notice of Intent to <br />Conduct Prospecting on the East RDD Lease, also called the Multi-Mineral <br />Lease. This letter responds to your comments, and provides new <br />information regarding a change in the surface location of several drill <br />holes. <br />• New surface locations of well heads: <br />In the previously-submitted materials which you reviewed, Shell proposed <br />to directionally drill 13 heater wells, 6 observer wells, and 2 producer <br />wells. This much of the plan has not changed; all wells still will be <br />drilled directionally, and the well locations, at depth, remain the same <br />as proposed in Shell's existing submittal. However, for drilling safety <br />and ease of access we have elected to spread out the surface drill pattern <br />slightly and drill several of the wells as deviated wells (See Figure 2, <br />attached). That is, wells will be drilled vertically from surface to <br />below surface casing (-300 ft), then deviated to the location previously <br />proposed, then drilled vertically to TD. The lower portion of the wells <br />will be vertical from just above the dissolution surface (1900 ft depth) <br />to TD. <br />The attached map shows the locations of each well at depth (solid circles) <br />and the location of each well head at surface (open circles) (Figure 2). <br />Wells that are to be drilled vertically from surface to TD are shown in <br />solid circles. Wells within a one mile radius of the RDD can be found on <br />the attached map (Figure 1). <br />The wellhead layout forms an approximate H-shaped pattern. This surface <br />pattern will more easily accommodate drilling, logging, and work overs, <br />and provides a greater measure of safety for drilling, operations, and <br />work overs if/as needed. <br />•