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Title: Consolidatable gravel pack method

Abstract

A method is described for forming a consolidated gravel pack in a washed-out cavity adjacent to a producing well penetrating a subterranean oil formation comprising the steps of: (a) forming a quantity of resin coated gravel comprising granular mineral particles including gravel, the gravel particles being coated with a resin fluid containing a polymerizable oligomer of furfuryl alcohol resin, a catalyst comprising an oil soluble, very slightly water soluble organic acid and an ester of a weak organic acid to consume water produced by the polymerization of resin, the polymer coated gravel comprising a sticky solid material; (b) preparing an aqueous saline carrier fluid comprising water which is from 70 to 100% saturated with sodium chloride; (c) suspending the resin-coated gravel in the carrier fluid, forming a fluid mixture of resin-coated gravel and carrier fluid; (d) introducing the fluid mixture comprising the resin coated gravel particles suspended in the aqueous saline carrier fluid into the washed-out cavity of the formation adjacent to the producing well and shutting in the well for sufficient period of time to allow polymerization of the resin, forming the permeable gravel pack in the washed-out cavity of the formation.

Inventors:
;
Publication Date:
OSTI Identifier:
6060052
Patent Number(s):
US 4800960
Assignee:
Texaco Inc., White Plains, NY NOV; NOV-89-053284; EDB-89-075919
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 18 Dec 1987
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; PACKINGS; CHEMICAL COMPOSITION; ALCOHOLS; AQUEOUS SOLUTIONS; COATINGS; FORMATION DAMAGE; FURFURAL; GRANULAR MATERIALS; PERMEABILITY; POLYMERIZATION; POLYMERS; RESERVOIR ROCK; RESINS; ROCK-FLUID INTERACTIONS; ROCKS; SALINITY; SOLUBILITY; WELL COMPLETION; ALDEHYDES; CHEMICAL REACTIONS; DISPERSIONS; FURANS; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; MATERIALS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; SOLUTIONS; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Friedman, R.H., and Surles, B.W.. Consolidatable gravel pack method. United States: N. p., 1989. Web.
Friedman, R.H., & Surles, B.W.. Consolidatable gravel pack method. United States.
Friedman, R.H., and Surles, B.W.. 1989. "Consolidatable gravel pack method". United States. doi:.
@article{osti_6060052,
title = {Consolidatable gravel pack method},
author = {Friedman, R.H. and Surles, B.W.},
abstractNote = {A method is described for forming a consolidated gravel pack in a washed-out cavity adjacent to a producing well penetrating a subterranean oil formation comprising the steps of: (a) forming a quantity of resin coated gravel comprising granular mineral particles including gravel, the gravel particles being coated with a resin fluid containing a polymerizable oligomer of furfuryl alcohol resin, a catalyst comprising an oil soluble, very slightly water soluble organic acid and an ester of a weak organic acid to consume water produced by the polymerization of resin, the polymer coated gravel comprising a sticky solid material; (b) preparing an aqueous saline carrier fluid comprising water which is from 70 to 100% saturated with sodium chloride; (c) suspending the resin-coated gravel in the carrier fluid, forming a fluid mixture of resin-coated gravel and carrier fluid; (d) introducing the fluid mixture comprising the resin coated gravel particles suspended in the aqueous saline carrier fluid into the washed-out cavity of the formation adjacent to the producing well and shutting in the well for sufficient period of time to allow polymerization of the resin, forming the permeable gravel pack in the washed-out cavity of the formation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1989,
month = 1
}
  • Sand or similar material coated with a polymerizable resin and catalyst is suspended in a viscous fluid carrier. Such a composition is useful for introduction into a wellbore to effect gravel packing of washed-out cavities surrounding the wellbore. The viscous fluid carrier serves to maintain a heterogeneous suspension of sand as the composition is flowed down through the wellbore, so as to prevent premature settling of sand into gradient layers and voids. The fluid carrier includes a polymeric thickener and a small concentration of viscosity-enhancing agent, such as a dye. The viscosity-enhancing agent is effective to alter the configuration ofmore » polymeric thickener so as to enhance the viscosity imparted thereby. The sand or gravel included in the gravel packing composition is coated with a polymerizable resin and latent catalyst. At formation condition, the resin polymerizes and links together adjacent sand particles thereby forming a permeable consolidated structure which serves to reestablish washed-out zones near a wellbore. Corresponding methods for utilizing the compositions in gravel packing washed-out cavities surrounding a borehole are disclosed.« less
  • A packer with a liner assembly depending from it is packed off and anchored in well casing so that a screen portion of the liner assembly straddles casing perforations within a producing formation. An outer tubing string is lowered through the well casing and engaged with the packer to isolate the formation from well fluids above the packer and to provide a passage to the surface for the formation fluids. A member having crossover fluid passages and external seals engageable with internal seal surfaces in the liner and packer is lowered through the outer tubing string into the liner andmore » packer on an inner string. Fluid passages between the two strings, and between the two strings and the interior and exterior of the liner to control the flow of circulating, washing or acidizing fluids and for placement of gravel on the outside of the liner are selectively opened or closed by manipulation of the inner string.« less
  • A method is described for providing a permeably consolidated gravel pack in a well borehole penetrating a subterranean formation. A slurry composition is prepared containing a particular material coated with an uncured epoxy resin and a curing agent slurried in a hydrocarbon oil. The slurry is injected into the well bore and formation until a screen out occurs. The well is shut in until the resin-coated particulate mass cures to form a consolidated permeable sand or gravel pack. A portion or all of the consolidated mass in the well bore is then removed. (11 claims) (Continuation-in-part of U.S. Appl. 295,732,more » f. 10/6/72)« less
  • Methods of gravel packing are described utilizing controlled melting point material with the gravel placed behind a liner located in the well bore. The controlled melting point materials can be coated on the gravel prior to its placement behind the liner or circulated behind the liner separate from the gravel. After placement of the gravel and controlled melting point material behind the liner, heat is provided to melt the material so that it acts as a consolidating agent. (5 claims)
  • A method is described for forming a permeably consolidated gravel pack in a well borehole penetrating a subterranean formation. A slurry composition containing a particulate material coated with an uncured epoxy resin and a curing agent contained in a specific diluent is slurried in a liquid hydrocarbon which contains an anionic surfactant and introduced into place in the formation and allowed to cure. Preferably, the slurry is injected into the well bore and formation until a screen out occurs in the well bore. The well is shut in until the resin-coated particulate mass cures to form a permeable consolidated sandmore » or gravel pack. A portion or all of the consolidated mass in the well bore is then removed.« less