Technique for restoring or increasing flow to oil and gas wells

Details Technique for restoring or increasing flow to oil and gas wells Technique for restoring or increasing flow to oil and gas wells

1994-10-19

1996-05-14

Tsay, Frank S.

Wells

Processes

Producing foam or gas in well by foaming or gas producing...

166311, 166 63, E21B 4300

Patent

active

055159249

ABSTRACT:
A well, such as an oil or gas well, may be revived and or increase the flow of hydrocarbons from the well, by inserting a surfactant/chemical solution in solid stick form into the wellbore through the wellhead. The soap stick falls down the production tubing or casing due to gravitational pull and upon contacting the undesired well fluid(s) instantly reacts with the fluids to transform the fluids into foam, thus lightening the hydrostatic pressure being applied to the producing formation and increasing the flow of hydrocarbons. The sticks are manufactured by melting solid surfactants and or foamers to liquid form, then mixing the hydrogen gas producing chemicals and or acid solutions uniformly in the molten surfactants and or roamers, then pouring the molten mixture into various sized containers. When the mixture cools, it returns to solid form ready for use. The surfactant(s) are low moisture content foamers, the chemical(s) are hydrogen gas producing compounds which react violently with the downhole fluids. The chemical reaction when the stick contacts downhole fluids provides the agitation necessary to transform the surfactant/foamer compound(s) and the column of fluid into foam, thus reducing the hydrostatic pressure on the producing formation, therefore increasing the flow from the oil and or gas well.

REFERENCES:
patent: 2168116 (1939-08-01), Crites et al.
patent: 3164206 (1965-01-01), Sharp
patent: 3422760 (1969-01-01), Mohaupt
patent: 3593800 (1971-07-01), Hutchison
patent: 3726340 (1973-04-01), Fraser
patent: 4276934 (1981-07-01), Fraser
patent: 5005641 (1991-04-01), Mohaupt
patent: 5083615 (1992-01-01), McLaughlin et al.

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