Methods of completing wells in unconsolidated subterranean zones
AssigneeHalliburton Energy Services, Inc.
InventorsPhilip D. Nguyen, Ronald G. Dusterhoft
Life of this patent
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Abstract
Improved methods of completing unconsolidated subterranean zones penetrated by wellbores are provided. The methods basically comprise the steps of placing a slotted liner in the zone, isolating the slotted liner and the wellbore in the zone, injecting a hardenable resin composition coated particulate material into the zone by way of the slotted liner and then causing the hardenable resin composition to harden whereby the particulate material is consolidated into a hard permeable uniform mass.
Claims19
An improved method of completing an unconsolidated subterranean zone penetrated by a wellbore having an upper and lower end comprising the steps of:
- (a) placing a slotted liner in a lower end of said wellbore in said zone;
- (b) isolating the annulus between said slotted liner and said lower end of said wellbore in said zone from said upper wellbore end;
- (c) injecting a hardenable resin composition coated particulate material into said lower end of said wellbore in said zone by way of said slotted liner whereby said particulate material is uniformly packed into said annulus and into said slotted liner;
- (d) causing said hardenable resin composition to harden whereby said particulate material is consolidated into a hard permeable uniform mass capable of preventing migration of at least a portion of any unconsolidated formation fines and sand with fluids produced into said wellbore from said zone;
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- (e) drilling at least a portion of the hard permeable mass of particulate material formed in accordance with step (d) out of the interior of said slotted liner.
An improved method of completing an unconsolidated subterranean zone penetrated by an open-hole wellbore having an upper and lower end comprising the steps of:
- (a) placing a slotted liner in a lower end of said wellbore in said zone;
- (b) isolating the annulus between said slotted liner and said lower end of said wellbore in said zone from said upper wellbore end;
- (c) pumping a slurry of a hardenable resin composition coated particulate material into said lower end of said wellbore in said zone by way of said slotted liner whereby said particulate material is uniformly packed into said annulus and into said slotted liner;
- (d) causing said hardenable resin composition to harden whereby said particulate material is consolidated into a hard permeable uniform mass capable of preventing migration of at least a portion of any unconsolidated formation fines and sand with fluids produced into said wellbore from said zone;
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- (e) drilling said hard permeable mass of particulate material out of said slotted liner.
An improved method of completing an unconsolidated subterranean zone penetrated by a wellbore having casing cemented therein and having an upper and lower end comprising the steps of:
- (a) forming perforations through said casing and cement into said zone;
- (b) placing a slotted liner in a lower end of said wellbore in said zone;
- (c) isolating the annulus between said slotted liner and said lower end of said wellbore in said zone from said upper wellbore end;
- (d) pumping a slurry of a hardenable resin composition coated particulate material into said zone by way of said slotted liner whereby said particulate material is uniformly packed into said perforations, said annulus and said slotted liner;
- (e) causing said hardenable resin composition to harden whereby said particulate material is consolidated into a hard permeable uniform mass capable of preventing migration of at least a portion of any unconsolidated formation fines and sand with fluids produced into said wellbore from said zone;
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- (f) drilling at least a portion of the hard permeable mass of particulate material formed in accordance with step (e) out of the interior of said slotted liner.
An improved method of recompleting an unconsolidated subterranean zone penetrated by a wellbore having an upper and lower end having a screen positioned therein in said lower end comprising the steps of:
- (a) forming perforations or slots through said screen to effect communication with the annulus surrounding said screen in said lower wellbore end;
- (b) isolating the annulus between said perforated screen and said lower end of said wellbore from said upper wellbore end;
- (c) pumping a slurry of a hardenable resin composition coated particulate material into said lower wellbore end by way of said perforated screen whereby said particulate material is uniformly packed into said perforations, said annulus and said slotted liner;
- (d) causing said hardenable resin composition to harden whereby said particulate material is consolidated into a hard permeable uniform mass capable of preventing migration of at least a portion of any unconsolidated formation particulates with fluids produced into said wellbore.
Dependencies are inferred from the claim text.