Systems and Methods for Producing Gas Wells with Multiple Production Tubing Strings

A system for producing hydrocarbons from a subterranean well including a wellbore extending from a surface into a subterranean formation, the system comprising:

• a wellhead disposed at the surface;
• a production tree coupled to the wellhead;
• a casing coupled to the wellhead and extending into the wellbore;
• and
• a first production tubing string extending into the casing from the wellhead to a first production zone, wherein the first production tubing string is configured to provide a first fluid flow path for gases from the first production zone;
• a second production tubing string extending into the casing from the wellhead to the first production zone, wherein the second production tubing string is radially spaced from the first production tubing string, and wherein the second production tubing string is configured to provide a second fluid flow path for gases from the first production zone;
• wherein the first production tubing string has an inner diameter D1, wherein the second production tubing string has an inner diameter D2, and wherein the diameter D1 is larger than the diameter D2;
• wherein the production tree is configured to selectively allow and restrict fluid flow through the first production tubing string and the second production tubing string.

A method for producing gas from a well including a wellbore extending from a surface into a subterranean formation, the method comprising:

• (a) flowing gas from a first production zone in the subterranean formation during a first production period through a first production tubing string within the wellbore until a flow rate from the first production zone reaches a first value, wherein the first production tubing string has a first cross-sectional area;
• (b) shutting in the first production tubing string;
• (c) flowing gas from the first production zone during a second production period through a second production tubing string within the wellbore after (b) until the flow rate from the first production zone reaches a second value that is smaller than the first value, wherein the second production tubing string is radially spaced from the first production tubing string, and wherein the second production tubing string has a second cross-sectional area that is smaller than the first cross-sectional area;
• (d) shutting in the second production tubing string.

A method for producing gas from a well including a wellbore extending from a surface into a subterranean formation, the method comprising:

• (a) flowing gas from a first production zone in the subterranean formation through a first production tubing string within the wellbore;
• (b) flowing gas from the first production zone in the subterranean formation through a second production tubing string during (a), wherein the second production string is radially spaced from the first production string;
• (c) determining a first pressure within the wellbore at an entrance of the first production tubing string;
• (d) determining a second pressure of gas within the first production tubing string at the surface;
• and
• (e) regulating a flow of gas through the second production tubing string during (b) to minimize a difference between the first pressure and the second pressure.