Wells – Processes – Graveling or filter forming
Patent
1988-03-22
1989-05-16
Kisliuk, Bruce M.
Wells
Processes
Graveling or filter forming
166369, E21B 4302
Patent
active
048301108
ABSTRACT:
Unconsolidated formations may be produced to yield hydrocarbons and other fluids by forming an openhole wellbore in the region to be produced, cleaning the wellbore face with a low solids content, low leakoff type fluid and/or underreaming the wellbore to provide a clean face in the region of interest and followed by insertion of a production tubing string including a filter medium which will retain larger formation sand particles in the wellbore cavity but will allow a limited amount of solids fines to be produced with the produced fluids. An in situ sand pack is formed within the wellbore cavity together with a dilatant zone of generally cylindrical shape having an outer radius which grows into the formation until the in situ stresses increase and the dilatant zone as well as the in situ sand pack become stable. This type of well completion eliminates the requirement for other means of consolidating formation sands as well as the cost of installing artificial gravel packs in a well.
REFERENCES:
patent: 3007522 (1961-11-01), Clausse
patent: 3664421 (1972-05-01), Urbanosky
patent: 3675717 (1972-07-01), Goins, Jr. et al.
patent: 4353419 (1982-10-01), Widmyer
Atlantic Richfield Company
Kisliuk Bruce M.
Martin Michael E.
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