Abstract: The invention discloses a method for experimentally determining the conductivity of unpropped fracture in hydraulic fracturing of shale reservoir, comprising the following steps: select an outcrop sample with natural fractures in a shale reservoir section, and cut the outcrop sample with natural fractures along the extension direction of the natural fracture into no less than 8 square rock slabs; use a laser scanner to obtain the rough topography data of the fracture surface of each square rock slab and calculate the area tortuosity; pick out the rock samples; model the rough surface of the selected rock samples; import the treated surface model into the engraving machine, and select the downhole core or outcrop rocks in the same horizon for repeated production; calculate the shear slippage at different positions of unpropped fracture according to the data of shale reservoir; finally test the conductivity of the shale rock samples after shear slip.

Abstract: A method for acquiring an opening timing of natural fracture under an in-slit temporary plugging condition and a device thereof are provided. The method includes steps of: acquiring physical parameters of stratum according to site geological data, and measuring a slit length L of a hydraulic fracture; dividing the hydraulic fracture into N unit bodies of equal length and numbering them sequentially; and dividing a total calculation time t into meter fractions of time with equal interval; calculating a width of each unit body in the hydraulic fracture at the initial time; calculating a fluid pressure in the hydraulic fracture at the k-th fraction of time; calculating a closed pressure at an entrance of the natural fracture on an upper side and a lower side of the hydraulic fracture at the k-th fraction of time; and determining whether the natural fracture is opened by a determining criteria based on the above calculation results.

Abstract: A method for acquiring an opening timing of natural fracture under an in-slit temporary plugging condition and a device thereof are provided. The method includes steps of: acquiring physical parameters of stratum according to site geological data, and measuring a slit length L of a hydraulic fracture; dividing the hydraulic fracture into N unit bodies of equal length and numbering them sequentially; and dividing a total calculation time t into in time nodes with equal interval; calculating a width of each unit body in the hydraulic fracture at the initial time; calculating a fluid pressure in the hydraulic fracture at the k-th time node; calculating a closed pressure at an entrance of the natural fracture on an upper side and a lower side of the hydraulic fracture at the k-th time node; and determining whether the natural fracture is opened by a determining criteria based on the above calculation results.

Abstract: A method for characterizing complexity of rock fracture based on fractal dimension and a device thereof are provided. The method includes steps of: collecting rock fracture samples of a rock, and collecting basic parameters of the rock; determining a fractal dimension of a rock fracture morphology of the rock; calculating the fractal dimension of the rock; calculating a complexity coefficient Fc of rock fracture of the rock; and characterizing a complexity of rock fracture of the rock based on the complexity coefficient Fc of rock fracture of the rock. In the present invention, combined with the fractal geometry theory, fracture complexity coefficient of shale rocks is redefined and calculated to accurately characterize rock fracture morphology, so that characteristics of rock fracture morphology is correctly understood and affecting factors of fracture morphology is analyzed.

Abstract: A method for mirror image package preparation and application operation includes: acquiring a launch operation package and launch mirror image package; upon launching of the target application, establishing a first channel between a local buffer manager and the launch mirror image package, and a second channel between the local buffer manager and a server; creating a first virtual file system locally, and establishing a third channel between the local buffer manager and the first virtual file system; if a received file access request is a read request, acquiring first data from the launch mirror image package, and/or from an original mirror image package on the server; feeding the first data back to the target application, wherein storage directory structures of data sets in the launch mirror image package and original mirror image package individually correspond to logic directory relations of file sets in an original data package.

Abstract: A method for manufacturing a mask for integrated circuit devices. The method includes providing a quartz substrate having a surface and forming a MoSi film overlying the surface of the quartz substrate. The method also includes patterning the MoSi film overlying the quartz substrate to form a mask pattern. A step of forming an opaque edge structure comprising a carbon bearing material on a portion of the surface around a peripheral region of the mask pattern is also included.

Abstract: A method for manufacturing a mask for integrated circuit devices. The method includes providing a quartz substrate having a surface and forming a MoSi film overlying the surface of the quartz substrate. The method also includes patterning the MoSi film overlying the quartz substrate to form a mask pattern. A step of forming an opaque edge structure comprising a carbon bearing material on a portion of the surface around a peripheral region of the mask pattern is also included.