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Measuring effective fracture half-length and quantifying flux distribution in and around fractures in petroleum reservoirs

A technology for flux distribution and fractures, applied in wellbore/well components, production fluids, earthmoving, etc., to solve problems such as impracticality, trouble, and inability to measure and quantify the flux distribution of petroleum reservoirs

Inactive Publication Date: 2020-10-16
SAUDI ARABIAN OIL CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to the best of our knowledge, it is not currently possible to measure and quantify the flux distribution in and around fractures in petroleum reservoirs
Numerical simulation of flow in such complex geometries is therefore a currently available technique, although considered cumbersome and impractical in many cases

Method used

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  • Measuring effective fracture half-length and quantifying flux distribution in and around fractures in petroleum reservoirs
  • Measuring effective fracture half-length and quantifying flux distribution in and around fractures in petroleum reservoirs
  • Measuring effective fracture half-length and quantifying flux distribution in and around fractures in petroleum reservoirs

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Embodiment Construction

[0031] In the attached picture, figure 1 A and figure 2 Shown in three dimensions in horizontal section and isometric respectively, a hydrocarbon-producing fractured well 10 in a wellbore 12 has been drilled into and through the subsurface. As shown, in a hydrocarbon-bearing reservoir formation R of interest, a well 10 and a wellbore 12 are formed between reservoir formation rock (designated as Region 1) and another portion of reservoir rock (designated as Region 2). Crack or crack matrix14. Exemplary subterranean hydrocarbon producing reservoirs have complex flow geometries. Production wells 10 are located in fractures or fracture matrix 14 in layer R. The fracture 14 is an integral part of the complex flow geometry. As shown at 16, the crack 14 has a crack width w f .

[0032] Flux distribution along fracture plane with infinite conductivity

[0033] The production pressure has previously been considered to be uniform across the extent of the fracture plane, where th...

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Abstract

Flux distribution along a fracture plane in a subsurface reservoir hydrocarbon containing formation is determined, and an effective half-length of the fracture is also determined. Previously, flux distribution along such a fracture plane has been considered uniform, in what were termed infinite conductivity fractures. The fracture half-length is calculated at a distance along the fracture from thewellbore where change in pressure (across the fracture plane) approaching zero. The results obtained according to the present invention are used for reservoir production planning and management.

Description

technical field [0001] The present invention relates to modeling the structure of subterranean reservoirs, and more particularly to measuring effective fracture half-lengths and quantifying flux distribution in and around fractures in petroleum reservoirs. Background technique [0002] In reservoir engineering, accurate modeling of subsurface reservoirs and formations, and numerical simulation of processes related to fluid flow through computer processing are widely used for precise oil and gas reservoir management and development planning. Both direct and indirect methods are used to assess the properties of rock-bearing fluids. [0003] Direct methods use direct measurement tools, such as well logging tools. However, the ability of such tools to obtain data from the tool as a function of depth into the reservoir is limited to shallow depths, typically on the order of a few inches. For indirect measurements, tools such as piezometers are used to record changes in pressure...

Claims

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Application Information

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IPC IPC(8): E21B43/26
CPCG01V20/00
Inventor 费萨尔·M·阿勒塔瓦德马哈茂德·贾迈勒艾哈迈迪
Owner SAUDI ARABIAN OIL CO