摘要:
A method is disclosed for using aqueous VES-based gravel carrier fluids in gravel packing operations using screens and shunt tubes that have been run into a well completed with an oil-based mud. With this method, the previously necessary but undesirable steps of first running in a perforated liner and then displacing the oil-based mud with an aqueous-based fluid in the region to be gravel packed are both avoided while the advantages of gravel packing with an aqueous-based fluid are retained.
摘要:
This invention relates to compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using water-in-water polymer emulsions to uniformly dissolve a rheologically active polymer, such as a thickener or friction reducer, in the treatment fluid. The emulsions have a low viscosity and are easily pumped for mixing into a treatment fluid, where upon dilution with an aqueous medium, the polymer is easily hydrated without forming fish-eyes. The partitioning agent in the water-in-water emulsion does not generally affect the rheology of the treatment fluid. The invention also relates to further processing of the emulsion by wet grinding, high shear mixing and/or heating to enhance the hydration rate in the preparation of the well treatment fluid.
摘要:
An example apparatus includes a formation description module that interprets a formation description corresponding to a formation of interest, a fluid description module that interprets a high solids content fluid (HSCF) description, and a fracture modeling module that models a fracturing operation in the formation of interest in response to the formation description and the HSCF description. The apparatus further includes a fracture results module that provides a fracture treatment description parameter in response to the model.
摘要:
A large-span and special-shaped arch bridge, comprising a main girder (2), a center abutment (11) served as a central bearing point and two auxiliary abutments (12,13) served as bearing points at two ends, wherein further comprising an arch-axis combination (3) and two arch-axis bending beams (4,5) presented as arcs projected upwards, the arch-axis combination being built on the center abutment (11) with two ends connected to the inner ends of the two arch-axis bending beams (4,5), the outer ends of the two arch-axis bending beams (4,5) being built on the two auxiliary abutments (12,13), the two arch-axis bending beams (4,5) being connected to the main girder (2) via a plurality of inhaul cables. A method for constructing said arch bridge is also disclosed. Through the dual-arch axis of two arch-axis bending beams, the bending strength of the cross-section of the arch bridge is significantly increased, the bending moment of the cross-section of the arch at the central bearing point is decreased, the vertical displacement at the haunch of the arch is lesser, and the deformation of the main girder is reduced, thus the force of the entire bridge is more reasonable, the construction cost can effectively be reduced and the construction period can be shortened.
摘要:
The invention discloses a method of treating a subterranean formation of a well bore, that provides a first treatment fluid; subsequently, pumps the first treatment fluid to initiate a network of low conductivity fractures in the subterranean formation; provides a second treatment fluid comprising a second carrier fluid, a particulate blend including a first amount of particulates having a first average particle size between about 100 and 2000 μm and a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size, such that a packed volume fraction of the particulate blend exceeds 0.74; and subsequently, pumps the second treatment fluid to initiate at least one high conductivity fracture in the subterranean formation, wherein the high conductivity fracture has a conductivity higher than the average of the conductivity of the low conductivity fractures and connects the network of the low conductivity fractures.
摘要:
Disclosed herein is a degradable latex comprising a stable dispersion of macromolecules in a liquid medium, wherein the macromolecules comprise a primary moiety comprising a plurality of functional groups, and a plurality of secondary moiety each chemically bonded through a labile linkage to the functional groups of the primary moiety, wherein at least a portion of residues of the secondary moiety are dispersible in the liquid medium. Methods of making and degrading the degradable latex, treating a formation and a treatment fluid are also disclosed.
摘要:
A method includes initiating a first hydraulic fracture with a first fracture initiation fluid at a first position in a wellbore. The method further includes positioning a high-solids content fluid (HSCF) in the first hydraulic fracture. The method further includes initiating a second hydraulic fracture with a second fracture initiation fluid at a second position in the wellbore, where the second position is not hydraulically isolated from the first position. The method further includes positioning the HSCF in the second hydraulic fracture.
摘要:
A method includes performing a chemical process to create a chemical product and an amount of heat, and transferring the heat to a first fluid. The method further includes hydrating a polymer in the first fluid, and adding the chemical product from the chemical process to the first fluid to create a treatment fluid. The method further includes diluting the treatment fluid with respect to at least one constituent of the treatment fluid. The method includes treating a formation of interest in a wellbore with the treatment fluid. The method includes changing a formulation of the treatment fluid during the treating. The method also includes extending the treating beyond a design amount, or ending the treatment before the design amount and preserving some reagents of the chemical process.
摘要:
The invention discloses a method of treating a subterranean formation of a well bore, that provides a first treatment fluid; subsequently, pumps the first treatment fluid to initiate a network of low conductivity fractures in the subterranean formation; provides a second treatment fluid comprising a second carrier fluid, a particulate blend including a first amount of particulates having a first average particle size between about 100 and 2000 μm and a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size, such that a packed volume fraction of the particulate blend exceeds 0.74; and subsequently, pumps the second treatment fluid to initiate at least one high conductivity fracture in the subterranean formation, wherein the high conductivity fracture has a conductivity higher than the average of the conductivity of the low conductivity fractures and connects the network of the low conductivity fractures.
摘要:
This invention relates to compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using water-in-water polymer emulsions to uniformly dissolve a rheologically active polymer, such as a thickener or friction reducer, in the treatment fluid. The emulsions have a low viscosity and are easily pumped for mixing into a treatment fluid, where upon dilution with an aqueous medium, the polymer is easily hydrated without forming fish-eyes. The partitioning agent in the water-in-water emulsion does not generally affect the rheology of the treatment fluid. The invention also relates to further processing of the emulsion by wet grinding, high shear mixing and/or heating to enhance the hydration rate in the preparation of the well treatment fluid.