Patent classifications
C09K8/5756
Methods of controlling well bashing
Methods of preventing or minimizing communication between adjacent wells include providing a treatment fluid including a conformance chemical, a diverting agent, and a hydraulic cement, introducing the treatment fluid into a first well adjacent a second well, allowing the conformance chemical, the diverting agent, and the hydraulic cement to block fractures in the first well to prevent or minimize communication between the first well and the second well, stimulating the second well after blocking the fractures, and recovering a formation fluid from the first well, the second well, or both.
INORGANIC CLAY PARTICULATE ADDITIVE FOR CONSOLIDATING TREATMENTS
Systems and methods for treating subterranean formations using deagglomerated inorganic clay particles are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises a base fluid, a consolidating agent, and a deagglomerated inorganic clay particle; introducing the treatment fluid into at least a portion of a subterranean formation so as to contact unconsolidated particles within the subterranean formation with the treatment fluid; and allowing the consolidating agent and the deagglomerated inorganic clay particle to consolidate at least a portion of the unconsolidated particulates in the portion of the subterranean formation.
Thickening of fluids
An aqueous fluid, possibly a wellbore fracturing fluid, comprises an aqueous solution or dispersion of a first polymer, which may be polysaccharide, as a thickener and a cross linking agent to enhance the viscosity of the fluid by crosslinking the first polymer, wherein the crosslinking agent is a second polymer comprising at least one polymer chain with phenyl boronate groups distributed along the polymer chain and the phenyl boronic acid groups have nitrogen attached to the phenyl group at a position which is meta relative to the boronate group.
Use of superabsorbent polymers for pressure control and diversion applications
A method of hydraulically fracturing a subterranean formation penetrated by a wellbore comprises: providing a diverting fluid comprising a carrier fluid, a first superabsorbent polymer and a second superabsorbent polymer, the second superabsorbent polymer having a shape, or a composition, or a combination thereof different from that of the first superabsorbent polymer; injecting the diverting fluid into the subterranean formation; and injecting a fracturing fluid into the formation after injecting the diverting fluid. A viscosity modifying agent can be present in the diverting fluid. Superabsorbent polymers can also be used to develop a temporary filter cake at the formation face to reduce or eliminate the fluid leakoff out of the wellbore.
Well treatment fluids comprising cross-linkable polysaccharides
A method of treating a subterranean formation includes providing a treatment fluid comprising a crosslinkable polymer prepared by a redox reaction with vinyl phosphonic acid monomers or polymers and a polysaccharide, and at least one of a hydrolysable in-situ acid generator and a chelating agent, providing a carrier fluid comprising a brine, providing a metal crosslinker, placing all into a formation, allowing the polymer of to crosslink, and allowing the crosslinked polymer to become uncrosslinked. A wellbore fluid includes a crosslinkable polymer prepared by a redox reaction with vinyl phosphonic acid monomers or polymers and hydroxyethyl cellulose; at least one of a hydrolysable in-situ acid generator, a chelating agent, and mixtures thereof; a carrier fluid comprising a brine; and a metal crosslinker.
CROSSLINKED POLYMERS DERIVED FROM MONOMERS HAVING ACRYLOYL AND LACTAM MOIETIES AND SULFONIC ACID/SULFONATE COMONOMERS, COMPOSITIONS THEREOF, AND APPLICATIONS THEREOF
The invention provides polymers comprising repeating units derived from at least one monomer comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety; at least one monomer comprising at least one sulfonic acid moiety or a salt thereof; and at least one crosslinker. The invention further provides various compositions comprising the polymers. The invention furthermore provides applications of these compositions in various industrial arts, particularly in oilfield operations such as drilling and cementing.
FRACTURING FLUIDS AND METHODS OF TREATING HYDROCARBON FORMATIONS
A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.
Fracturing fluids and methods of treating hydrocarbon formations
A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.
METHODS OF USING SUPERABSORBENT POLYMERS FOR FRACTURING AND SAND CONTROL APPLICATIONS
A method of treating a subterranean formation comprises forming a storable aqueous suspension comprising a carrier fluid, a superabsorbent polymer, a proppant the proppant being suspended in the carrier fluid as a substantially perfectly supported particulate; diluting the storable aqueous suspension in-line to a desired concentration; and introducing the diluted storable aqueous suspension into the subterranean formation. A sand control method is also disclosed.
Dual breaker system for reducing formation damage during fracturing
Methods and compositions for use in subterranean operations are disclosed comprising providing a treatment fluid that comprises a base fluid, a gelling agent, and a synergistic breaker composition, comprising: a controlled degradable acid generating material, and an oxidizing component; introducing the treatment fluid into a formation; allowing the synergistic breaker composition to substantially reduce the viscosity of the treatment fluid.