Single hole-single layer mean value well testing interpretation method for fracture and cavern reservoir

A technology of well test interpretation and fracture-cavity type, which is applied in earthwork drilling, wellbore/well components, special data processing applications, etc., to achieve the effect of convenient solution, simple model and fast calculation speed

Active Publication Date: 2018-11-13
HEFEI SUCCESS SCI & TECH
View PDF8 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, these two theories are based on conventional well test interpretation theory, aiming at the characteristics of fractured-cavity reservoirs and deepening the conventional well test

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
  • Single hole-single layer mean value well testing interpretation method for fracture and cavern reservoir
  • Single hole-single layer mean value well testing interpretation method for fracture and cavern reservoir
  • Single hole-single layer mean value well testing interpretation method for fracture and cavern reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] 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.

[0061]see figure 1 As shown, the present invention is a single-cavity-single-layer average value well test interpretation method for fracture-cavity reservoirs, comprising the following steps:

[0062] S000: Establish a well test model according to the physical model of the wellbore connected to the large cave and the reservoir parameters;

[0063] S001: Obtain the bottomhole pressure solution in real space according to the well test model;

[0064] S002: Use the...

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

No PUM Login to view more

Abstract

The invention discloses a single hole-single layer mean value well testing interpretation method for a fracture and cavern reservoir, and relates to the technical field of oil reservoir engineering. The single hole-single layer mean value well testing interpretation method comprises the steps that a well testing model is established according to a physical model of which a wellbore is connected with a large cavern and oil reservoir parameters; a real space downhole pressure solution is obtained according to the well testing model; and curve fitting is conducted by utilizing the real space downhole pressure solution and actually-measured downhole pressure data, and thus parameters of fracture permeability, the wellbore reservoir coefficient, the cavern volume and the like are obtained. According to the single hole-single layer mean value well testing interpretation method, a matched interpretation method is provided for parameter calculation and reserve calculation of the fracture and cavern oil reservoir, the volume of the large cavern in the fracture and cavern oil reservoir can be directly interpreted, and technical support is provided for formulation of an oilfield development scheme; the model is simple, solving is convenient, meanwhile, analytic solution does not involve calculation of complex functions, and the calculation speed is high; and meanwhile, the interpretationresults after fitting can directly give the magnitude of the cavern volume, and thus the single hole-single layer mean value well testing interpretation method can be conveniently used for calculatingthe single well reserve.

Description

technical field [0001] The invention belongs to the technical field of oil reservoir engineering, in particular to a single-cavity-single-layer average value well test interpretation method for fracture-cavity reservoirs. Background technique [0002] The matrix of carbonate fracture-cavity reservoirs basically contains no oil, and the storage spaces are mainly fractures and caves. The flow of crude oil in fractures and caves has pipe flow and seepage. When crude oil flows in deep fractures and caves, the vertical flow is obvious. At present, there are two theories of triple medium and equipotential body in well test interpretation methods for fracture-cavity reservoirs. [0003] The triple medium theory divides the oil storage space of fracture-vuggy reservoirs into caves, fractures, and matrix. The matrix is ​​the main oil storage space; A relatively complete theoretical system of well testing has been established. [0004] Equipotential body theory assumes: 1) The rese...

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
no application Login to view more
IPC IPC(8): E21B47/00E21B49/00G06F19/00
CPCE21B47/00E21B49/00
Inventor 卢志炜左辉孙平
Owner HEFEI SUCCESS SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap