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A Method for Determining the Size of Water Body in Fracture-vuggy Reservoir

A technology for determining the method and fracture-cavity type, which is used in earth-moving drilling, wellbore/well components, design optimization/simulation, etc. Precise results

Active Publication Date: 2022-02-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the existing material balance method is directly used to calculate the water body in fractured-cavity reservoirs, the model will be seriously distorted, and the calculation results will not be of reference

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  • A Method for Determining the Size of Water Body in Fracture-vuggy Reservoir

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0034] In the present invention, the terms "first", "second" and the like are used to distinguish similar objects, rather than to describe a specific order or sequence, unless stated otherwise. The terms used should be understood as such; use of the terms "upper", "lower", "left", "right", etc. generally refers to the orientation shown in the drawings, or to the parts themselves in vertical, perpendicular or In terms of the direction of...

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Abstract

The invention discloses a method for determining the size of a water body in a fractured-cavity reservoir, which comprises the following steps: defining the size of the water body as the ratio of the water body volume to the oil-containing volume in the fractured-cavity reservoir; establishing the relationship between the swept volume and the size of the water body Relational model; under ideal conditions, the swept volume is equivalent to the volume of fractures and caves, and the swept volume is obtained by obtaining the volume of fractures and caves, and then the water body size corresponding to the swept volume can be obtained according to the relationship model . The invention fully considers the structural characteristics and inspection characteristics of the fractured-vug reservoir, and the result is more accurate and has higher applicability.

Description

technical field [0001] The invention relates to the technical field of energy development of oil and gas reservoirs, in particular to a method for determining the size of water bodies in fracture-cavity reservoirs. Background technique [0002] As an unconventional oil and gas energy source, carbonate fracture-vuggy reservoir is one of the energy types with great mining potential. For fracture-vuggy reservoirs that utilize natural water body energy to displace formation crude oil, the size of the primary water body in the reservoir reflects the strength of natural water flooding energy, determines the source of reservoir displacement energy, and is the key to formulating reservoir development methods. The important basis of production system and well layout plan is the key factor affecting the recovery effect of natural water flooding fracture-cavity reservoirs. Based on this, it is of great significance to clarify the size of water body to guide the development of fracture-...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00G06F30/20
CPCE21B49/00G06F30/20
Inventor 肖文联彭佳明赵金洲乐平郑玲丽孙超
Owner SOUTHWEST PETROLEUM UNIV