Method and device for determining fracture parameters of one-layer multi-horizontal fracture in shallow low-permeability oil reservoir
A parameter-determined, multi-level technology, which is applied in earthwork drilling, data processing applications, and mining fluids, can solve problems such as fracturing cracks with multi-level fractures in one layer, and achieve improved development effects, good guidance, and avoidance of blindness effect
Inactive Publication Date: 2019-01-18
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF6 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The existing fracturing fracture design methods and devices are generally aimed at vertical fractures, and are aimed at one fracturing fracture. These methods and technologies cannot solve the problem of fracturing fractures with multiple horizontal fractures in one layer.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0048] Embodiments of the present invention provide a method and device for determining fracture parameters of one layer of multi-horizontal fractures in a shallow low-permeability reservoir.
[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0050] Such as figure 1 Shown is a flow chart of a method for determining fracture parameters of one layer of multi-horizontal fractures in a shallow low-permeability reservoir according to an embodiment of the present invention. The method shown in the figure includes: step...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method and a device for determining fracture parameters of one-layer multi-horizontal fracture in a shallow low-permeability oil reservoir. The method includes the following steps: establishing a one-layer multi-horizontal seepage physical model; determining a seepage characteristic of the fracturing fracture according to the seepage physical model; establishing a seepageequation and a productivity equation of the fracturing fracture according to the seepage physical model and the seepage characteristic of the fracturing fracture; determining the number of the fracturing fracture, the sequence of the fracturing fracture, the optimal relative position of the fracturing fracture, the optimal shape, the optimal length, the optimal perforation position and the optimalperforation thickness of the fracturing fracture by adopting a numerical simulation method according to the seepage equation, the productivity equation and the acquired physical property data. The one-layer multi-horizontal fracture parameter acquired by the method is capable of effectively improving the development effect, excellently guiding the development of the shallow low-permeability oil reservoir, and being widely applied to various aspects.
Description
technical field [0001] The invention relates to the field of fracture parameter design in the case of "one-layer multi-horizontal fracture" fracturing of shallow low-permeability reservoirs, in particular to a method and device for determining fracture parameters of one-layer multi-horizontal fracture fracturing in shallow low-permeability reservoirs. Background technique [0002] The implementation of "one layer with multiple fractures" fracturing in shallow low-permeability reservoirs has achieved good development results. The so-called "one layer with multiple fractures" refers to the phenomenon of generating multiple horizontal fractures in a small layer of the reservoir. Due to the shallow layer, low pressure, horizontal stress greater than vertical stress, and the existence of stress interlayers, multiple horizontal fractures can be generated during the staged fracturing process, thereby expanding the oil drainage range and improving the producing degree and recovery of...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B47/00E21B43/26G06Q50/02G09B25/06
CPCE21B43/26E21B47/00E21B49/00G06Q50/02G09B25/06
Inventor 邵长金孟选刚沈振振涂彬代晓旭张洪张新印李相方
Owner CHINA UNIV OF PETROLEUM (BEIJING)