Shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of horizontal well section and optimization method, applied in design optimization/simulation, earthwork drilling, sealing/packing, etc., can solve the problems of unclear re-expansion rule of suppressed fractures, difficult construction design, etc.
Active Publication Date: 2020-06-23
SOUTHWEST PETROLEUM UNIV
View PDF7 Cites 15 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
At present, the dense cutting temporary plugging fracturing technology in the horizontal well section is not yet mature, and there are few relate...
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0039] Such as figure 1 As shown, the main content of the present invention is a method for optimizing the construction of dense cutting temporary plugging and fracturing in a shale horizontal well section. The main steps include:
[0040] Step S10, obtaining reservoir parameters, well completion parameters, and fracturing operation parameters;
[0041] Among them, reservoir parameters include reservoir thickness, Young's modulus, shear modulus, Poisson's ratio, horizontal maximum principal stress, horizontal minimum principal stress, fracture toughness of reservoir rock, and average length, angle, density, Tensile strength, shear strength, friction coefficient of fracture surface, etc.; completion parameters include perforation cluster number, perforation number and perforation diameter; construction parameters include fracturing fluid rheological parameters, construction displacement, etc. In order to illustrate the optimization method of the present invention, this example...
Embodiment 2
[0076] In order to further illustrate the optimization method of the present invention, the most optimized parameter of construction displacement is still used as an example, and the second embodiment is modified on the basis of the first embodiment, the number of crack clusters is increased from five clusters to seven clusters, and the dense cutting is temporarily carried out. Plugging and fracturing construction displacement optimization.
[0077] Step S10, obtaining reservoir parameters, well completion parameters, and fracturing operation parameters;
[0078] The parameters in Example 2 are shown in Table 1. Only the number of clusters of fractures is changed, which is set to seven clusters. The distribution of natural fractures remains unchanged, and the number of clusters is still used. figure 2 distribution pattern in .
[0079] Step S20, establishing a hydraulic fracturing fluid-solid coupling model through the displacement discontinuity method;
[0080] The establi...
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 discloses a shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method. The shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method comprises the steps that reservoir parameters, well completion parameters and fracturing construction parameters are obtained; a hydraulic fracturing fluid-solid coupling model is established by a displacement discontinuity method; a shale horizontal well segment inside close cutting temporary plugging fracturing crack propagation model isestablished; shale horizontal well segment inside close cutting temporary plugging fracturing crack geometric parameters are calculated based on the reservoir parameters, the well completion parameters and the fracturing construction parameters; and construction parameters are optimized based on the hydraulic crack geometric parameters after segment inside close cutting temporary plugging fracturing and temporary plugging operation results. By means of the shale horizontal well segment inside close cutting temporary plugging fracturing construction optimization method, the applicability of aclose cutting temporary plugging process in shale reservoir reconstruction is improved, and the purposes of optimizing the construction design and improving the development effect are achieved.
Description
technical field [0001] The invention relates to a staged multi-cluster fracturing reconstruction technology for horizontal wells in shale reservoirs in petroleum engineering, in particular to an optimization method for dense cutting temporary plugging and fracturing operations in shale horizontal well sections. [0002] technical background [0003] The development of society is inseparable from the support of energy, and energy supply is related to national security. With the continuous development of China's economy, the demand for oil and gas resources has been increasing year by year, and the gap between the output of domestic oil and gas resources and the import of foreign oil and gas resources has been increasing, which has created a huge hidden danger to the country's economic development and energy security. With the advent of the new era, development concepts such as innovation, coordination, and green dominate the main theme of national economic development, and at ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more