METHOD FOR CALCULATING NON-UNIFORM DAMAGE SKIN FACTOR OF FRACTURED RESERVOIR - CHENGDU NORTH PETROLEUM EXPLORATION AND DEVELOPMENT TECH COMPANY LIMITED

Title:

METHOD FOR CALCULATING NON-UNIFORM DAMAGE SKIN FACTOR OF FRACTURED RESERVOIR

Document Type and Number:

WIPO Patent Application WO/2021/027180

Kind Code:

A1

Abstract:

A method for calculating a non-uniform damage skin factor of a fractured reservoir. The method comprises: acquiring basic parameters, segmenting a reservoir into discrete well sections at equal intervals, assigning the basic parameters to the discrete well sections, and establishing an original reservoir physical parameter set, a damaged reservoir physical parameter set, and a non-uniform damage skin parameter set; with the discrete well sections as an object, using wellbore profile parameters and logging parameters to calculate original reservoir physical parameters of the discrete well sections; calculating damaged reservoir physical parameters of the discrete well sections, calculating matrices and fracture damage skin factors of the discrete well sections, calculating non-uniform damage skin factors of the discrete well sections, and a comprehensive skin factor of sections of the entire well. This method achieves the goal of decomposing a skin factor to a long well section to reveal non-uniform damage characteristics, and to distinguish respective damages of a matrix and a fracture system within the section.

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Inventors:

XIAO YONG (CN)
HAO ENJIE (CN)
WANG HEHUA (CN)
MI ZHONGRONG (CN)
ZANG KEYI (CN)
XIAO WEI (CN)
CHENG YI (CN)
KANG BO (CN)
CEN YUDA (CN)
MI QIANGBO (CN)
XUE HENG (CN)
ZHAO XING (CN)
MA CHENG (CN)
TANG XIALAN (CN)
QU JIANHUA (CN)
WANG ZHIKUN (CN)
DUAN CE (CN)

Application Number:

PCT/CN2019/120507

Publication Date:

February 18, 2021

Filing Date:

November 25, 2019

Export Citation:

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Assignee:

CHENGDU NORTH PETROLEUM EXPLORATION AND DEVELOPMENT TECH COMPANY LIMITED (CN)

International Classes:

E21B49/00

Foreign References:

CN110454152A	2019-11-15
CN103806904A	2014-05-21
CN201661287U	2010-12-01
CN108959767A	2018-12-07
US20080066909A1	2008-03-20

Attorney, Agent or Firm:

CHENGDU XINGZHI PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)

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