Chemical based well kickoff system for naturally flowing wells

A method for providing reactants that undergo a reaction to produce a generated gas in situ in a wellbore to affect a density of a fluid in the wellbore, the method comprising the steps of:

• positioning a reaction housing into the wellbore using a line, the line comprising a plurality of electric cables, each of the plurality of electric cables being configured to transmit a signal to and from the reaction housing, the reaction housing comprising:
• a first reactant cell, the first reactant cell containing a first reactant,
• a second reactant cell, the second reactant cell containing a second reactant,
• a mixing chamber, the mixing chamber in fluid communication with the first reactant cell through a first passage, the first passage comprising a first port, the mixing chamber in fluid communication with the second reactant cell through a second passage, the second passage comprising a second port, and
• an outlet, the outlet positioned in the mixing chamber;
• opening the first port in the first passage at a predetermined mark to allow the first reactant to pass from the first reactant cell into the mixing chamber;
• opening the second port in the second passage at the predetermined mark to allow the second reactant to pass from the second reactant cell into the mixing chamber;
• allowing the first reactant and the second reactant to react in the mixing chamber to generate gas, wherein the generated gas increases a reaction pressure;
• increasing the reaction pressure in the mixing chamber until the reaction pressure exceeds a wellbore pressure in the wellbore;
• and
• opening the outlet when the reaction pressure exceeds the wellbore pressure, wherein opening the outlet releases the generated gas into the wellbore such that the generated gas mixes with the fluid in the wellbore and affects the density of the fluid.

A method for reversing a well kill operation using a kill fluid in a wellbore, the method comprising the steps of:

• placing a reaction housing into the wellbore using a line, the line comprising a plurality of electric cables, each of the plurality of electric cables being configured to transmit a signal to and from the reaction housing, the reaction housing comprising:
• a first reactant cell, the first reactant cell containing a first reactant,
• a second reactant cell, the second reactant cell containing a second reactant,
• a mixing chamber, the mixing chamber in fluid communication with the first reactant cell through a first passage, the first passage comprising a first port, the mixing chamber in fluid communication with the second reactant cell through a second passage, the second passage comprising a second port, and
• an outlet, the outlet positioned in the mixing chamber;
• opening the first port in the first passage at a predetermined mark to allow the first reactant to pass from the first reactant cell into the mixing chamber;
• opening the second port in the second passage at the predetermined mark to allow the second reactant to pass from the second reactant cell into the mixing chamber,
• allowing the first reactant and the second reactant to react in a reaction in the mixing chamber to produce a generated gas, wherein the generated gas increases a reaction pressure;
• increasing the reaction pressure in the mixing chamber until the reaction pressure exceeds a wellbore pressure in the wellbore;
• opening the outlet when the reaction pressure exceeds the wellbore pressure, wherein opening the outlet releases the generated gas into the wellbore;
• and
• altering a density of the kill fluid in the wellbore, wherein the density of the kill fluid is altered by mixing with the generated gas, such that the kill fluid rises up from the wellbore.