Back to results
US 8,006,760 B2Granted
Clean fluid systems for partial monolayer fracturing
AssigneeHalliburton Energy Services, Inc.
InventorsJeff T. Fleming, Richard W. Pauls, Thomas D. Welton, David E. McMechan, Bradley L. Todd, Jason Bryant
Life of this patent
Estimating the term…
Abstract
Provided are methods that include a method comprising: placing a clean fluid comprising proppant particulates into a portion of a fracture in a subterranean formation, and depositing one or more of the proppant particulates into the fracture to form a partial monolayer. In another aspect, the invention provides methods that include placing a degradable fluid loss additive comprising collagen into a subterranean formation.
Claims22
A method comprising:
- providing at least one fracture in a subterranean formation;
- placing a clean fluid into a portion of the at least one fracture, wherein the clean fluid comprises a plurality of proppant particulates;
- and wherein the clean fluid is viscosified with one or more clean polymers selected from the group consisting of:
- a clarified polymer, a synthetic polymer, a clarified biopolymer, a clarified xanthan, a clarified diutan, a clarified hydroxyethylcellulose, a succinoglycan, a clarified scleroglucan, and a derivative thereof;
- and,
- depositing one or more of the plurality of proppant particulates into the portion of the at least one fracture to form a partial monolayer within the fracture, wherein the partial monolayer comprises a single, substantially non-contiguous layer comprising proppant particulates and flow channels between at least some of the proppant particulates;
- and wherein a volumetric fraction of the partial monolayer occupied by the flow channels is greater than about 50%.
4 more elements
A method comprising:
- providing a pumping schedule for treating a subterranean formation, wherein the pumping schedule is determined by:
- providing conductivity test data for the subterranean formation;
- providing a monolayer in situ proppant concentration;
- identifying at least one point of maximum conductivity in the conductivity test data below the monolayer in situ proppant concentration;
- identifying a target in situ proppant concentration which correlates with the at least one point of maximum conductivity;
- and
- identifying a pumping schedule to provide the target in situ proppant concentration to a desired location in the subterranean formation;
- and
- placing a clean fluid into the subterranean formation to form a partial monolayer therein, wherein:
- the clean fluid comprises a plurality of proppant particulates and is viscosified with one or more clean polymers selected from a group consisting of:
- a clarified polymer, a synthetic polymer, a clarified biopolymer, a clarified xanthan, a clarified diutan, a clarified hydroxyethylcellulose, a succinoglycan, a clarified scleroglucan, and a derivative thereof;
- the volume of the clean fluid placed into the subterranean formation and the volumetric concentration of the plurality of proppant particulates in the clean fluid correlates to the pumping schedule;
- and
- the partial monolayer comprises a single, substantially non-contiguous layer comprising proppant particulates.
11 more elements
A method comprising:
- providing a monolayer in situ proppant concentration and conductivity test data related to that monolayer;
- identifying at least one point of maximum conductivity in the conductivity test data below the monolayer in situ proppant concentration;
- providing at least one fracture in a subterranean formation;
- placing a fluid into a portion of the at least one fracture, wherein the fluid is viscosified with one or more clean polymers selected from a group consisting of:
- a clarified polymer, a synthetic polymer, a clarified biopolymer, a clarified xanthan, a clarified diutan, a clarified hydroxyethylcellulose, a succinoglycan, a clarified scleroglucan, and a derivative thereof and comprises:
- a plurality of proppant particulates;
- and
- a degradable fluid loss additive, wherein the degradable fluid loss additive comprises collagen;
- and
- depositing one or more of the plurality of proppant particulates into the portion of the at least one fracture.
7 more elements
A method comprising:
- providing at least one fracture in a subterranean formation;
- placing a clean fluid into a portion of the at least one fracture, wherein the clean fluid comprises a plurality of proppant particulates;
- and wherein the clean fluid is viscosified with one or more clean polymers selected from the group consisting of:
- a clarified polymer, a synthetic polymer, a clarified biopolymer, a clarified xanthan, a clarified diutan, a clarified hydroxyethylcellulose, a succinoglycan, a clarified scleroglucan, and a derivative thereof;
- wherein at least a portion of the plurality of proppant particulates comprise a chemically degradable material;
- and
- depositing one or more of the plurality of proppant particulates into the portion of the at least one fracture to form a partial monolayer within the fracture,
- wherein the partial monolayer is formed from a full monolayer or a packed portion following chemical degradation of the portion of the plurality of proppant particulates comprising a chemically degradable material, and
- wherein the partial monolayer comprises a single, substantially non-contiguous layer of proppant particulates.
6 more elements
Dependencies are inferred from the claim text.