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Title: Two-step method for horizontal gravel packing

Abstract

This patent describes a method for placing gravel within an annulus formed in a non-vertical borehole by the placement of a screen within the borehole. It comprises: injecting into the annulus a slurry of gravel and a medium viscosity carrier fluid to pack from 50% to 75% of the screen-borehole annulus; and injecting into the annulus a slurry of gravel and a low viscosity carrier fluid until the annulus is completely packed.

Inventors:
Publication Date:
OSTI Identifier:
5496081
Patent Number(s):
US 5058677; A
Application Number:
PPN: US 7-585424
Assignee:
Chevron Research and Technology Co., San Francisco, CA (United States) NOV; NOV-92-010168; EDB-92-074998
Resource Type:
Patent
Resource Relation:
Patent File Date: 20 Sep 1990
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; DIRECTIONAL DRILLING; WELL COMPLETION; OIL WELLS; STOWING; DRILLING FLUIDS; HORIZONTAL INTEGRATION; INJECTION WELLS; SLURRIES; VISCOSITY; WELL STIMULATION; DISPERSIONS; DRILLING; FLUIDS; MIXTURES; STIMULATION; SUSPENSIONS; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Forrest, J.K. Two-step method for horizontal gravel packing. United States: N. p., 1991. Web.
Forrest, J.K. Two-step method for horizontal gravel packing. United States.
Forrest, J.K. 1991. "Two-step method for horizontal gravel packing". United States. doi:.
@article{osti_5496081,
title = {Two-step method for horizontal gravel packing},
author = {Forrest, J.K.},
abstractNote = {This patent describes a method for placing gravel within an annulus formed in a non-vertical borehole by the placement of a screen within the borehole. It comprises: injecting into the annulus a slurry of gravel and a medium viscosity carrier fluid to pack from 50% to 75% of the screen-borehole annulus; and injecting into the annulus a slurry of gravel and a low viscosity carrier fluid until the annulus is completely packed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1991,
month =
}
  • A well completion and the method therefor for a wellbore which extends generally horizontally of a subterranean layer comprised primarily of unconsolidated sand particles which hold a viscous hydrocarbon. The completion includes an elongated perforated liner which is positioned in the wellbore. The liner is substantially surrounded by a gravel pack which functions to limit the amount of sand particles which are carried from the subterranean layer into the liner in response to the introduction of a flow of a hot stimulating fluid into the substrate.
  • 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 liner provided with bypass ports and a perforated portion or screen below the ports is secured to a suitable well packer and lowered on an outer tubing string in well casing to a location at the screen straddles casing perforations within a producing formation. The packer is packed-off against the casing above its perforations and anchored against movement in both directions to secure the liner and its screen in place. An inner tubing string is lowered through the outer string into the liner. The inner string and liner have upper and lower seal devices, either of which is selectivelymore » engaged while the other is disengaged, or both of which are disengaged, by longitudinal movement of the inner string in the outer string and liner, to control the flow of circulating, washing, or acidizing fluids in both directions between the inner string, linner-casing annulus, and inner string- outer string annulus, and also the placement of gravel in the liner-casing annulus. (19 claims)« less
  • A method is described of gravel packing a subterranian well located subsea utilizing through-the-flowline techniques wherein an H-type crossover member is attached to a dual pipe string run in casing in a well bore, and the casing is perforated. The method comprises: pumping a sand slurry consisting of liquid and aggregate downwardly through one of the pipe strings and outwardly into the area of the perforated casing in order to pack the perforated casing area by depositing the aggregate and returning the liquid upwardly through the other of the pipe strings; continuing to pack the perforated casing area until sufficientlymore » filled with aggregate that return flow of liquid is inhibited; conducting the return flow of liquid from the one pipe string to the other pipe string through the H-type crossover member; and discontinuing flow of sand slurry outwardly of the one pipe string and plugging off the one pipe string.« less
  • An apparatus and method are described for running a well screen and packer in a well, and gravel packing around the well screen. The well screen and packer are run into the well together on a tubing work string, and the packing of gravel around the well screen and the setting of the packer are accomplished without removal of the tubing work string from the well and without pumping gravel past the packing element. (14 claims)