摘要:
A method of forming a wellbore fluid, the method including introducing a hydratable polymer and introducing a crosslinker comprised of at least a silica material, the crosslinker having a dimension of from about 5 nm to about 100 nm.
摘要:
A method of forming a wellbore fluid, the method including introducing a hydratable polymer and introducing a crosslinker comprised of at least a silica material, the crosslinker having a dimension of from about 5 nm to about 100 nm.
摘要:
The concentrate solution for the crosslinking of polymers comprises water, polyol, a viscosifying agent, a first borate ion in solution, and a crosslinking agent able to release a second borate ion, wherein the second borate ion is not in solution.
摘要:
Disclosed herein is a well treatment fluid comprising an aqueous solution comprising greater than or equal to about 1 wt % boron, at least 5 wt % of a co-solvent, and greater than or equal to about 5 wt % sodium hydroxide, potassium hydroxide, or a combination thereof, wherein the co-solvent comprises glycerol, ethylene glycol, propylene glycol, or a combination thereof. Methods of using the well treatment fluid are also disclosed.
摘要:
A method of treating a subterranean formation penetrated by a wellbore utilizes a treating fluid formed from an aqueous solution of a water-soluble polymer. The treating fluid further contains a crosslinking agent and an optional delayed release alkaline additive. The delayed release alkaline additive may be at least one of urea, a urea derivative, a solid alkaline earth metal carbonate, a solid alkaline earth metal oxide and combinations of these. The treating fluid further includes an acidic pH adjusting agent used in an amount to provide the treating fluid with a pH of less than about 5. The treating fluid is then introduced into the formation.
摘要:
Subterranean formation treatment methods incorporating a rheology model which enables prediction of fluid rheology properties during a treatment operation, where the foundation of the model is a description of the reaction chemistry which describes how the number of crosslinks and broken polymer linkages develops in time under the influence of crosslinkers, breakers, and/or thermally induced effects and pressure effects. In one aspect, when used as a tool for simulating the fluid viscosity, the model can help optimizing the fluid design and optional breaker schedule for a hydraulic fracturing treatment.
摘要:
The effect of various chemical or biological agents in well treatment fluids can be delayed by sequestering the agents in the discontinuous phase of an emulsion for a period of time, before the emulsion is destabilized by exposure to at least one of: (1) a change in temperature, (2) a change in pH, (3) a change in salinity, (4) a change in alcohol concentration, (5) a change in stabilizing surfactant concentration, (6) a change in organic ion concentration, (7) a change in destabilizing surfactant concentration, (8) a change in surfactant adsorbent material concentration, (9) an ultrasonic pulse, and (10) an electrical field. Upon exposure to the emulsion destabilizing condition, the agent sequestered in the discontinuous phase of the emulsion is released into the continuous phase of the fluid composition, where it can have its intended effect.
摘要:
A method and composition for treating a subterranean formation penetrated by a wellbore including preparing an aqueous composition containing a source of boron, whereby boron is present in the slurry in an amount of about 1.7% or greater, by weight, based upon a total weight of the composition, combining the composition with a mixture comprising a viscosifier and aqueous medium to form a treatment fluid, wherein the composition is added to the mixture in an amount of about 0.5% or less, by volume, based upon a total volume of the treatment fluid, and contacting the formation with the treatment fluid to treat the formation. The source of boron may be boric acid.
摘要:
A method for treating a subterranean formation is made of steps of providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate salt or formic acid; injecting into a wellbore, the composition; contacting the composition with the subterranean formation, wherein the temperature is above 100 degrees Celsius at this contact; and allowing the composition to treat the subterranean formation.
摘要:
A method and composition for treating a subterranean formation penetrated by a wellbore including preparing an aqueous composition comprising a source of boron, whereby boron is present in the slurry in an amount of about 1.7% or greater, by weight, based upon a total weight of the composition, combining the composition with a mixture comprising a viscosifier and aqueous medium to form a treatment fluid, wherein the composition is added to the mixture in an amount of about 0.5% or less, by volume, based upon a total volume of the treatment fluid, and contacting the formation with the treatment fluid to treat the formation. A method and composition for treating a subterranean formation penetrated by a wellbore including preparing an aqueous composition comprising boric acid and a pH adjusting agent, combining the composition with mixture comprising a viscosifier and aqueous medium to form a treatment fluid, wherein the composition is added to the mixture in an amount of about 0.5% or less, by volume, based upon total volume of the treatment fluid, and contacting the formation with the treatment fluid to treat the formation.