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2. Well drainage - Wikipedia

   en.wikipedia.org/wiki/Well_drainage

   The costs of the most attractive solution can be compared with the costs of a horizontal drainage system - for which the drain spacing can be calculated with a drainage equation - serving the same purpose, to decide which system deserves preference. The well design proper is described in [1]

3. Drill cuttings - Wikipedia

   en.wikipedia.org/wiki/Drill_cuttings

   Estimated treatment costs, which include transportation, spreading, amendments, and monitoring, are about $4–5 per cubic yard. When the treated material is recycled as backfill, net costs are about $1 per cubic yard. Capital costs (not included in the treatment cost estimates) were recovered within the first eight months of operation (Cole ...

4. Extended reach drilling - Wikipedia

   en.wikipedia.org/wiki/Extended_Reach_Drilling

   The aims of ERD are: a) to reach a larger area from one surface drilling location, and b) to keep a well in a reservoir for a longer distance in order to maximize its productivity and drainage capability. Today's challenges in ERD are hole cleaning, managing the mechanical loads on the drill string and downhole pressure, and cost. [1]

5. Oil well - Wikipedia

   en.wikipedia.org/wiki/Oil_well

   With deepwater drilling rig rates in 2015 of around $520,000/day, [25] and similar additional spread costs, a deepwater well of a duration of 100 days can cost around US$100 million. [ 26 ] With high-performance jackup rig rates in 2015 of around $177,000, [ 25 ] and similar service costs, a high pressure, high-temperature well of duration 100 ...

6. Two-stage drainage ditch - Wikipedia

   en.wikipedia.org/wiki/Two-stage_drainage_ditch

   The primary disadvantage associated with the two stage drainage ditch is the upfront cost of the earthwork necessary to increase the existing channel for the benches to be constructed. Construction costs for such earthwork are contingent upon the watershed size and depth of the ditch and approximately range from $5–20 USD/linear foot. [6]

7. What do people regret the most when they retire? [Video] - AOL

   www.aol.com/finance/people-regret-most-retire...

   Almost 6 in 10 retirees retired sooner than planned, per Transamerica (Getty Creative) (WC.GI via Getty Images) The timing of retirement Sometimes the decision to retire is a regret.