# Drilling Techniques (Zone Completion)
**URL:** https://www.mineralrightsforum.com/t/drilling-techniques-zone-completion/11569
**Category:** Oil & Gas Field Operations
**Created:** [February 14, 2014, 1:19pm UTC](https://www.mineralrightsforum.com/t/drilling-techniques-zone-completion/11569 "2014-02-14T13:19:06Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Austin\_Wright1](https://www.mineralrightsforum.com/u/Austin_Wright1)
#### Post date: [February 14, 2014, 1:19pm UTC](https://www.mineralrightsforum.com/t/drilling-techniques-zone-completion/11569/1 "2014-02-14T13:19:06Z")
Hi, Assume an oil well has been completed in more than one zone of production. Since we have multiple zone completion, does this mean we also have “down hole commingle” of production?
Thanks, Austin Wright
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### Author:  [@Gary\_L\_Hutchinson](https://www.mineralrightsforum.com/u/Gary_L_Hutchinson)
#### Post date: [February 14, 2014, 6:42pm UTC](https://www.mineralrightsforum.com/t/drilling-techniques-zone-completion/11569/2 "2014-02-14T18:42:15Z")
Yes you do unless the operator has a pressure, water, or gas in solution problem and needs to produce the zones separately. If the zones are already naturally communicating, it’s a good way to go until one zone becomes uneconomic. If you are a working interest owner, it’s going to get expensive either way. Hope for offset wells that eliminate the commingling if it has become a production problem for the operator.
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### Author:  [@system](https://www.mineralrightsforum.com/u/system)
#### Post date: [August 15, 2018, 12:55am UTC](https://www.mineralrightsforum.com/t/drilling-techniques-zone-completion/11569/3 "2018-08-15T00:55:30Z")